From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst
---
kernel/drivers/net/ethernet/renesas/sh_eth.c | 230 ++++++++++++++++++++++++++++++---------------------------
1 files changed, 120 insertions(+), 110 deletions(-)
diff --git a/kernel/drivers/net/ethernet/renesas/sh_eth.c b/kernel/drivers/net/ethernet/renesas/sh_eth.c
index c44aea4..8927d59 100644
--- a/kernel/drivers/net/ethernet/renesas/sh_eth.c
+++ b/kernel/drivers/net/ethernet/renesas/sh_eth.c
@@ -45,6 +45,15 @@
#define SH_ETH_OFFSET_DEFAULTS \
[0 ... SH_ETH_MAX_REGISTER_OFFSET - 1] = SH_ETH_OFFSET_INVALID
+/* use some intentionally tricky logic here to initialize the whole struct to
+ * 0xffff, but then override certain fields, requiring us to indicate that we
+ * "know" that there are overrides in this structure, and we'll need to disable
+ * that warning from W=1 builds. GCC has supported this option since 4.2.X, but
+ * the macros available to do this only define GCC 8.
+ */
+__diag_push();
+__diag_ignore(GCC, 8, "-Woverride-init",
+ "logic to initialize all and then override some is OK");
static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
SH_ETH_OFFSET_DEFAULTS,
@@ -140,69 +149,6 @@
[RXALCR1] = 0x00ac,
[FWNLCR1] = 0x00b0,
[FWALCR1] = 0x00b4,
-};
-
-static const u16 sh_eth_offset_fast_rz[SH_ETH_MAX_REGISTER_OFFSET] = {
- SH_ETH_OFFSET_DEFAULTS,
-
- [EDSR] = 0x0000,
- [EDMR] = 0x0400,
- [EDTRR] = 0x0408,
- [EDRRR] = 0x0410,
- [EESR] = 0x0428,
- [EESIPR] = 0x0430,
- [TDLAR] = 0x0010,
- [TDFAR] = 0x0014,
- [TDFXR] = 0x0018,
- [TDFFR] = 0x001c,
- [RDLAR] = 0x0030,
- [RDFAR] = 0x0034,
- [RDFXR] = 0x0038,
- [RDFFR] = 0x003c,
- [TRSCER] = 0x0438,
- [RMFCR] = 0x0440,
- [TFTR] = 0x0448,
- [FDR] = 0x0450,
- [RMCR] = 0x0458,
- [RPADIR] = 0x0460,
- [FCFTR] = 0x0468,
- [CSMR] = 0x04E4,
-
- [ECMR] = 0x0500,
- [RFLR] = 0x0508,
- [ECSR] = 0x0510,
- [ECSIPR] = 0x0518,
- [PIR] = 0x0520,
- [APR] = 0x0554,
- [MPR] = 0x0558,
- [PFTCR] = 0x055c,
- [PFRCR] = 0x0560,
- [TPAUSER] = 0x0564,
- [MAHR] = 0x05c0,
- [MALR] = 0x05c8,
- [CEFCR] = 0x0740,
- [FRECR] = 0x0748,
- [TSFRCR] = 0x0750,
- [TLFRCR] = 0x0758,
- [RFCR] = 0x0760,
- [MAFCR] = 0x0778,
-
- [ARSTR] = 0x0000,
- [TSU_CTRST] = 0x0004,
- [TSU_FWSLC] = 0x0038,
- [TSU_VTAG0] = 0x0058,
- [TSU_ADSBSY] = 0x0060,
- [TSU_TEN] = 0x0064,
- [TSU_POST1] = 0x0070,
- [TSU_POST2] = 0x0074,
- [TSU_POST3] = 0x0078,
- [TSU_POST4] = 0x007c,
- [TSU_ADRH0] = 0x0100,
-
- [TXNLCR0] = 0x0080,
- [TXALCR0] = 0x0084,
- [RXNLCR0] = 0x0088,
- [RXALCR0] = 0x008C,
};
static const u16 sh_eth_offset_fast_rcar[SH_ETH_MAX_REGISTER_OFFSET] = {
@@ -395,6 +341,7 @@
[TSU_ADRH0] = 0x0100,
};
+__diag_pop();
static void sh_eth_rcv_snd_disable(struct net_device *ndev);
static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev);
@@ -555,7 +502,7 @@
sh_eth_write(ndev, 0, RDFFR);
/* Reset HW CRC register */
- if (mdp->cd->hw_checksum)
+ if (mdp->cd->csmr)
sh_eth_write(ndev, 0, CSMR);
/* Select MII mode */
@@ -568,6 +515,9 @@
static void sh_eth_set_rate_gether(struct net_device *ndev)
{
struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (WARN_ON(!mdp->cd->gecmr))
+ return;
switch (mdp->speed) {
case 10: /* 10BASE */
@@ -590,7 +540,7 @@
.chip_reset = sh_eth_chip_reset,
.set_duplex = sh_eth_set_duplex,
- .register_type = SH_ETH_REG_FAST_RZ,
+ .register_type = SH_ETH_REG_GIGABIT,
.edtrr_trns = EDTRR_TRNS_GETHER,
.ecsr_value = ECSR_ICD,
@@ -621,7 +571,8 @@
.no_trimd = 1,
.no_ade = 1,
.xdfar_rw = 1,
- .hw_checksum = 1,
+ .csmr = 1,
+ .rx_csum = 1,
.tsu = 1,
.no_tx_cntrs = 1,
};
@@ -664,13 +615,15 @@
.apr = 1,
.mpr = 1,
.tpauser = 1,
+ .gecmr = 1,
.bculr = 1,
.hw_swap = 1,
.rpadir = 1,
.no_trimd = 1,
.no_ade = 1,
.xdfar_rw = 1,
- .hw_checksum = 1,
+ .csmr = 1,
+ .rx_csum = 1,
.tsu = 1,
.select_mii = 1,
.magic = 1,
@@ -788,6 +741,7 @@
.apr = 1,
.mpr = 1,
.tpauser = 1,
+ .gecmr = 1,
.bculr = 1,
.hw_swap = 1,
.nbst = 1,
@@ -795,7 +749,8 @@
.no_trimd = 1,
.no_ade = 1,
.xdfar_rw = 1,
- .hw_checksum = 1,
+ .csmr = 1,
+ .rx_csum = 1,
.select_mii = 1,
.magic = 1,
.cexcr = 1,
@@ -958,6 +913,9 @@
{
struct sh_eth_private *mdp = netdev_priv(ndev);
+ if (WARN_ON(!mdp->cd->gecmr))
+ return;
+
switch (mdp->speed) {
case 10: /* 10BASE */
sh_eth_write(ndev, 0x00000000, GECMR);
@@ -1003,6 +961,7 @@
.apr = 1,
.mpr = 1,
.tpauser = 1,
+ .gecmr = 1,
.bculr = 1,
.hw_swap = 1,
.rpadir = 1,
@@ -1043,13 +1002,15 @@
.apr = 1,
.mpr = 1,
.tpauser = 1,
+ .gecmr = 1,
.bculr = 1,
.hw_swap = 1,
.no_trimd = 1,
.no_ade = 1,
.xdfar_rw = 1,
.tsu = 1,
- .hw_checksum = 1,
+ .csmr = 1,
+ .rx_csum = 1,
.select_mii = 1,
.magic = 1,
.cexcr = 1,
@@ -1083,6 +1044,7 @@
.apr = 1,
.mpr = 1,
.tpauser = 1,
+ .gecmr = 1,
.bculr = 1,
.hw_swap = 1,
.no_trimd = 1,
@@ -1092,6 +1054,7 @@
.irq_flags = IRQF_SHARED,
.magic = 1,
.cexcr = 1,
+ .rx_csum = 1,
.dual_port = 1,
};
@@ -1256,7 +1219,7 @@
}
/* mdio bus control struct */
-static struct mdiobb_ops bb_ops = {
+static const struct mdiobb_ops bb_ops = {
.owner = THIS_MODULE,
.set_mdc = sh_mdc_ctrl,
.set_mdio_dir = sh_mmd_ctrl,
@@ -1539,8 +1502,9 @@
mdp->irq_enabled = true;
sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
- /* PAUSE Prohibition */
+ /* EMAC Mode: PAUSE prohibition; Duplex; RX Checksum; TX; RX */
sh_eth_write(ndev, ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) |
+ (ndev->features & NETIF_F_RXCSUM ? ECMR_RCSC : 0) |
ECMR_TE | ECMR_RE, ECMR);
if (mdp->cd->set_rate)
@@ -1603,6 +1567,19 @@
update_mac_address(ndev);
}
+static void sh_eth_rx_csum(struct sk_buff *skb)
+{
+ u8 *hw_csum;
+
+ /* The hardware checksum is 2 bytes appended to packet data */
+ if (unlikely(skb->len < sizeof(__sum16)))
+ return;
+ hw_csum = skb_tail_pointer(skb) - sizeof(__sum16);
+ skb->csum = csum_unfold((__force __sum16)get_unaligned_le16(hw_csum));
+ skb->ip_summed = CHECKSUM_COMPLETE;
+ skb_trim(skb, skb->len - sizeof(__sum16));
+}
+
/* Packet receive function */
static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
{
@@ -1644,7 +1621,7 @@
* the RFS bits are from bit 25 to bit 16. So, the
* driver needs right shifting by 16.
*/
- if (mdp->cd->hw_checksum)
+ if (mdp->cd->csmr)
desc_status >>= 16;
skb = mdp->rx_skbuff[entry];
@@ -1677,6 +1654,8 @@
DMA_FROM_DEVICE);
skb_put(skb, pkt_len);
skb->protocol = eth_type_trans(skb, ndev);
+ if (ndev->features & NETIF_F_RXCSUM)
+ sh_eth_rx_csum(skb);
netif_receive_skb(skb);
ndev->stats.rx_packets++;
ndev->stats.rx_bytes += pkt_len;
@@ -2000,7 +1979,6 @@
if ((mdp->cd->no_psr || mdp->no_ether_link) && phydev->link)
sh_eth_rcv_snd_enable(ndev);
- mmiowb();
spin_unlock_irqrestore(&mdp->lock, flags);
if (new_state && netif_msg_link(mdp))
@@ -2127,11 +2105,13 @@
add_reg(EESR);
add_reg(EESIPR);
add_reg(TDLAR);
- add_reg(TDFAR);
+ if (!cd->no_xdfar)
+ add_reg(TDFAR);
add_reg(TDFXR);
add_reg(TDFFR);
add_reg(RDLAR);
- add_reg(RDFAR);
+ if (!cd->no_xdfar)
+ add_reg(RDFAR);
add_reg(RDFXR);
add_reg(RDFFR);
add_reg(TRSCER);
@@ -2166,25 +2146,30 @@
if (cd->tpauser)
add_reg(TPAUSER);
add_reg(TPAUSECR);
- add_reg(GECMR);
+ if (cd->gecmr)
+ add_reg(GECMR);
if (cd->bculr)
add_reg(BCULR);
add_reg(MAHR);
add_reg(MALR);
- add_reg(TROCR);
- add_reg(CDCR);
- add_reg(LCCR);
- add_reg(CNDCR);
+ if (!cd->no_tx_cntrs) {
+ add_reg(TROCR);
+ add_reg(CDCR);
+ add_reg(LCCR);
+ add_reg(CNDCR);
+ }
add_reg(CEFCR);
add_reg(FRECR);
add_reg(TSFRCR);
add_reg(TLFRCR);
- add_reg(CERCR);
- add_reg(CEECR);
+ if (cd->cexcr) {
+ add_reg(CERCR);
+ add_reg(CEECR);
+ }
add_reg(MAFCR);
if (cd->rtrate)
add_reg(RTRATE);
- if (cd->hw_checksum)
+ if (cd->csmr)
add_reg(CSMR);
if (cd->select_mii)
add_reg(RMII_MII);
@@ -2469,7 +2454,7 @@
}
/* Timeout function */
-static void sh_eth_tx_timeout(struct net_device *ndev)
+static void sh_eth_tx_timeout(struct net_device *ndev, unsigned int txqueue)
{
struct sh_eth_private *mdp = netdev_priv(ndev);
struct sh_eth_rxdesc *rxdesc;
@@ -2504,7 +2489,8 @@
}
/* Packet transmit function */
-static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+static netdev_tx_t sh_eth_start_xmit(struct sk_buff *skb,
+ struct net_device *ndev)
{
struct sh_eth_private *mdp = netdev_priv(ndev);
struct sh_eth_txdesc *txdesc;
@@ -2633,20 +2619,6 @@
pm_runtime_put(&mdp->pdev->dev);
return 0;
-}
-
-/* ioctl to device function */
-static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
-{
- struct phy_device *phydev = ndev->phydev;
-
- if (!netif_running(ndev))
- return -EINVAL;
-
- if (!phydev)
- return -ENODEV;
-
- return phy_mii_ioctl(phydev, rq, cmd);
}
static int sh_eth_change_mtu(struct net_device *ndev, int new_mtu)
@@ -2937,6 +2909,39 @@
spin_unlock_irqrestore(&mdp->lock, flags);
}
+static void sh_eth_set_rx_csum(struct net_device *ndev, bool enable)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&mdp->lock, flags);
+
+ /* Disable TX and RX */
+ sh_eth_rcv_snd_disable(ndev);
+
+ /* Modify RX Checksum setting */
+ sh_eth_modify(ndev, ECMR, ECMR_RCSC, enable ? ECMR_RCSC : 0);
+
+ /* Enable TX and RX */
+ sh_eth_rcv_snd_enable(ndev);
+
+ spin_unlock_irqrestore(&mdp->lock, flags);
+}
+
+static int sh_eth_set_features(struct net_device *ndev,
+ netdev_features_t features)
+{
+ netdev_features_t changed = ndev->features ^ features;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (changed & NETIF_F_RXCSUM && mdp->cd->rx_csum)
+ sh_eth_set_rx_csum(ndev, features & NETIF_F_RXCSUM);
+
+ ndev->features = features;
+
+ return 0;
+}
+
static int sh_eth_get_vtag_index(struct sh_eth_private *mdp)
{
if (!mdp->port)
@@ -3090,9 +3095,6 @@
case SH_ETH_REG_GIGABIT:
reg_offset = sh_eth_offset_gigabit;
break;
- case SH_ETH_REG_FAST_RZ:
- reg_offset = sh_eth_offset_fast_rz;
- break;
case SH_ETH_REG_FAST_RCAR:
reg_offset = sh_eth_offset_fast_rcar;
break;
@@ -3114,10 +3116,11 @@
.ndo_get_stats = sh_eth_get_stats,
.ndo_set_rx_mode = sh_eth_set_rx_mode,
.ndo_tx_timeout = sh_eth_tx_timeout,
- .ndo_do_ioctl = sh_eth_do_ioctl,
+ .ndo_do_ioctl = phy_do_ioctl_running,
.ndo_change_mtu = sh_eth_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr,
+ .ndo_set_features = sh_eth_set_features,
};
static const struct net_device_ops sh_eth_netdev_ops_tsu = {
@@ -3129,10 +3132,11 @@
.ndo_vlan_rx_add_vid = sh_eth_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = sh_eth_vlan_rx_kill_vid,
.ndo_tx_timeout = sh_eth_tx_timeout,
- .ndo_do_ioctl = sh_eth_do_ioctl,
+ .ndo_do_ioctl = phy_do_ioctl_running,
.ndo_change_mtu = sh_eth_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr,
+ .ndo_set_features = sh_eth_set_features,
};
#ifdef CONFIG_OF
@@ -3140,6 +3144,7 @@
{
struct device_node *np = dev->of_node;
struct sh_eth_plat_data *pdata;
+ phy_interface_t interface;
const char *mac_addr;
int ret;
@@ -3147,14 +3152,14 @@
if (!pdata)
return NULL;
- ret = of_get_phy_mode(np);
- if (ret < 0)
+ ret = of_get_phy_mode(np, &interface);
+ if (ret)
return NULL;
- pdata->phy_interface = ret;
+ pdata->phy_interface = interface;
mac_addr = of_get_mac_address(np);
- if (mac_addr)
- memcpy(pdata->mac_addr, mac_addr, ETH_ALEN);
+ if (!IS_ERR(mac_addr))
+ ether_addr_copy(pdata->mac_addr, mac_addr);
pdata->no_ether_link =
of_property_read_bool(np, "renesas,no-ether-link");
@@ -3265,6 +3270,11 @@
ndev->max_mtu = 2000 - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
ndev->min_mtu = ETH_MIN_MTU;
+ if (mdp->cd->rx_csum) {
+ ndev->features = NETIF_F_RXCSUM;
+ ndev->hw_features = NETIF_F_RXCSUM;
+ }
+
/* set function */
if (mdp->cd->tsu)
ndev->netdev_ops = &sh_eth_netdev_ops_tsu;
@@ -3314,7 +3324,7 @@
goto out_release;
}
mdp->port = port;
- ndev->features = NETIF_F_HW_VLAN_CTAG_FILTER;
+ ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
/* Need to init only the first port of the two sharing a TSU */
if (port == 0) {
--
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