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/ibm/emac/core.c | 100 +++++++++++++++++++++++++++++++------------------
1 files changed, 63 insertions(+), 37 deletions(-)
diff --git a/kernel/drivers/net/ethernet/ibm/emac/core.c b/kernel/drivers/net/ethernet/ibm/emac/core.c
index a96f501..c00b909 100644
--- a/kernel/drivers/net/ethernet/ibm/emac/core.c
+++ b/kernel/drivers/net/ethernet/ibm/emac/core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* drivers/net/ethernet/ibm/emac/core.c
*
@@ -16,12 +17,6 @@
* (c) 2003 Benjamin Herrenschmidt <benh@kernel.crashing.org>
* Armin Kuster <akuster@mvista.com>
* Johnnie Peters <jpeters@mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
*/
#include <linux/module.h>
@@ -423,7 +418,7 @@
{
const int regs = EMAC_XAHT_REGS(dev);
u32 *gaht_base = emac_gaht_base(dev);
- u32 gaht_temp[regs];
+ u32 gaht_temp[EMAC_XAHT_MAX_REGS];
struct netdev_hw_addr *ha;
int i;
@@ -781,7 +776,7 @@
mutex_unlock(&dev->link_lock);
}
-static void emac_tx_timeout(struct net_device *ndev)
+static void emac_tx_timeout(struct net_device *ndev, unsigned int txqueue)
{
struct emac_instance *dev = netdev_priv(ndev);
@@ -877,7 +872,7 @@
{
struct emac_regs __iomem *p = dev->emacp;
u32 r = 0;
- int n, err = -ETIMEDOUT;
+ int n;
mutex_lock(&dev->mdio_lock);
@@ -924,7 +919,6 @@
goto bail;
}
}
- err = 0;
bail:
if (emac_has_feature(dev, EMAC_FTR_HAS_RGMII))
rgmii_put_mdio(dev->rgmii_dev, dev->rgmii_port);
@@ -1071,7 +1065,9 @@
/* Second pass, allocate new skbs */
for (i = 0; i < NUM_RX_BUFF; ++i) {
- struct sk_buff *skb = alloc_skb(rx_skb_size, GFP_ATOMIC);
+ struct sk_buff *skb;
+
+ skb = netdev_alloc_skb_ip_align(dev->ndev, rx_skb_size);
if (!skb) {
ret = -ENOMEM;
goto oom;
@@ -1080,10 +1076,10 @@
BUG_ON(!dev->rx_skb[i]);
dev_kfree_skb(dev->rx_skb[i]);
- skb_reserve(skb, EMAC_RX_SKB_HEADROOM + 2);
dev->rx_desc[i].data_ptr =
- dma_map_single(&dev->ofdev->dev, skb->data - 2, rx_sync_size,
- DMA_FROM_DEVICE) + 2;
+ dma_map_single(&dev->ofdev->dev, skb->data - NET_IP_ALIGN,
+ rx_sync_size, DMA_FROM_DEVICE)
+ + NET_IP_ALIGN;
dev->rx_skb[i] = skb;
}
skip:
@@ -1174,25 +1170,44 @@
}
}
-static inline int emac_alloc_rx_skb(struct emac_instance *dev, int slot,
- gfp_t flags)
+static int
+__emac_prepare_rx_skb(struct sk_buff *skb, struct emac_instance *dev, int slot)
{
- struct sk_buff *skb = alloc_skb(dev->rx_skb_size, flags);
if (unlikely(!skb))
return -ENOMEM;
dev->rx_skb[slot] = skb;
dev->rx_desc[slot].data_len = 0;
- skb_reserve(skb, EMAC_RX_SKB_HEADROOM + 2);
dev->rx_desc[slot].data_ptr =
- dma_map_single(&dev->ofdev->dev, skb->data - 2, dev->rx_sync_size,
- DMA_FROM_DEVICE) + 2;
+ dma_map_single(&dev->ofdev->dev, skb->data - NET_IP_ALIGN,
+ dev->rx_sync_size, DMA_FROM_DEVICE) + NET_IP_ALIGN;
wmb();
dev->rx_desc[slot].ctrl = MAL_RX_CTRL_EMPTY |
(slot == (NUM_RX_BUFF - 1) ? MAL_RX_CTRL_WRAP : 0);
return 0;
+}
+
+static int
+emac_alloc_rx_skb(struct emac_instance *dev, int slot)
+{
+ struct sk_buff *skb;
+
+ skb = __netdev_alloc_skb_ip_align(dev->ndev, dev->rx_skb_size,
+ GFP_KERNEL);
+
+ return __emac_prepare_rx_skb(skb, dev, slot);
+}
+
+static int
+emac_alloc_rx_skb_napi(struct emac_instance *dev, int slot)
+{
+ struct sk_buff *skb;
+
+ skb = napi_alloc_skb(&dev->mal->napi, dev->rx_skb_size);
+
+ return __emac_prepare_rx_skb(skb, dev, slot);
}
static void emac_print_link_status(struct emac_instance *dev)
@@ -1225,7 +1240,7 @@
/* Allocate RX ring */
for (i = 0; i < NUM_RX_BUFF; ++i)
- if (emac_alloc_rx_skb(dev, i, GFP_KERNEL)) {
+ if (emac_alloc_rx_skb(dev, i)) {
printk(KERN_ERR "%s: failed to allocate RX ring\n",
ndev->name);
goto oom;
@@ -1533,7 +1548,7 @@
ctrl);
/* skb fragments */
for (i = 0; i < nr_frags; ++i) {
- struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
len = skb_frag_size(frag);
if (unlikely(dev->tx_cnt + mal_tx_chunks(len) >= NUM_TX_BUFF))
@@ -1660,8 +1675,9 @@
DBG2(dev, "recycle %d %d" NL, slot, len);
if (len)
- dma_map_single(&dev->ofdev->dev, skb->data - 2,
- EMAC_DMA_ALIGN(len + 2), DMA_FROM_DEVICE);
+ dma_map_single(&dev->ofdev->dev, skb->data - NET_IP_ALIGN,
+ SKB_DATA_ALIGN(len + NET_IP_ALIGN),
+ DMA_FROM_DEVICE);
dev->rx_desc[slot].data_len = 0;
wmb();
@@ -1713,7 +1729,7 @@
int len = dev->rx_desc[slot].data_len;
int tot_len = dev->rx_sg_skb->len + len;
- if (unlikely(tot_len + 2 > dev->rx_skb_size)) {
+ if (unlikely(tot_len + NET_IP_ALIGN > dev->rx_skb_size)) {
++dev->estats.rx_dropped_mtu;
dev_kfree_skb(dev->rx_sg_skb);
dev->rx_sg_skb = NULL;
@@ -1769,16 +1785,18 @@
}
if (len && len < EMAC_RX_COPY_THRESH) {
- struct sk_buff *copy_skb =
- alloc_skb(len + EMAC_RX_SKB_HEADROOM + 2, GFP_ATOMIC);
+ struct sk_buff *copy_skb;
+
+ copy_skb = napi_alloc_skb(&dev->mal->napi, len);
if (unlikely(!copy_skb))
goto oom;
- skb_reserve(copy_skb, EMAC_RX_SKB_HEADROOM + 2);
- memcpy(copy_skb->data - 2, skb->data - 2, len + 2);
+ memcpy(copy_skb->data - NET_IP_ALIGN,
+ skb->data - NET_IP_ALIGN,
+ len + NET_IP_ALIGN);
emac_recycle_rx_skb(dev, slot, len);
skb = copy_skb;
- } else if (unlikely(emac_alloc_rx_skb(dev, slot, GFP_ATOMIC)))
+ } else if (unlikely(emac_alloc_rx_skb_napi(dev, slot)))
goto oom;
skb_put(skb, len);
@@ -1799,7 +1817,7 @@
sg:
if (ctrl & MAL_RX_CTRL_FIRST) {
BUG_ON(dev->rx_sg_skb);
- if (unlikely(emac_alloc_rx_skb(dev, slot, GFP_ATOMIC))) {
+ if (unlikely(emac_alloc_rx_skb_napi(dev, slot))) {
DBG(dev, "rx OOM %d" NL, slot);
++dev->estats.rx_dropped_oom;
emac_recycle_rx_skb(dev, slot, 0);
@@ -2301,7 +2319,7 @@
switch (cmd) {
case SIOCGMIIPHY:
data->phy_id = dev->phy.address;
- /* Fall through */
+ fallthrough;
case SIOCGMIIREG:
data->val_out = emac_mdio_read(ndev, dev->phy.address,
data->reg_num);
@@ -2455,7 +2473,8 @@
dev->phy.duplex = phy->duplex;
dev->phy.pause = phy->pause;
dev->phy.asym_pause = phy->asym_pause;
- dev->phy.advertising = phy->advertising;
+ ethtool_convert_link_mode_to_legacy_u32(&dev->phy.advertising,
+ phy->advertising);
}
static int emac_mii_bus_read(struct mii_bus *bus, int addr, int regnum)
@@ -2490,7 +2509,8 @@
phy_dev->autoneg = phy->autoneg;
phy_dev->speed = phy->speed;
phy_dev->duplex = phy->duplex;
- phy_dev->advertising = phy->advertising;
+ ethtool_convert_legacy_u32_to_link_mode(phy_dev->advertising,
+ phy->advertising);
return phy_start_aneg(phy_dev);
}
@@ -2624,7 +2644,8 @@
dev->phy.def->phy_id_mask = dev->phy_dev->drv->phy_id_mask;
dev->phy.def->name = dev->phy_dev->drv->name;
dev->phy.def->ops = &emac_dt_mdio_phy_ops;
- dev->phy.features = dev->phy_dev->supported;
+ ethtool_convert_link_mode_to_legacy_u32(&dev->phy.features,
+ dev->phy_dev->supported);
dev->phy.address = dev->phy_dev->mdio.addr;
dev->phy.mode = dev->phy_dev->interface;
return 0;
@@ -2827,6 +2848,7 @@
{
struct device_node *np = dev->ofdev->dev.of_node;
const void *p;
+ int err;
/* Read config from device-tree */
if (emac_read_uint_prop(np, "mal-device", &dev->mal_ph, 1))
@@ -2875,8 +2897,8 @@
dev->mal_burst_size = 256;
/* PHY mode needs some decoding */
- dev->phy_mode = of_get_phy_mode(np);
- if (dev->phy_mode < 0)
+ err = of_get_phy_mode(np, &dev->phy_mode);
+ if (err)
dev->phy_mode = PHY_INTERFACE_MODE_NA;
/* Check EMAC version */
@@ -2970,6 +2992,10 @@
dev->xaht_width_shift = EMAC4_XAHT_WIDTH_SHIFT;
}
+ /* This should never happen */
+ if (WARN_ON(EMAC_XAHT_REGS(dev) > EMAC_XAHT_MAX_REGS))
+ return -ENXIO;
+
DBG(dev, "features : 0x%08x / 0x%08x\n", dev->features, EMAC_FTRS_POSSIBLE);
DBG(dev, "tx_fifo_size : %d (%d gige)\n", dev->tx_fifo_size, dev->tx_fifo_size_gige);
DBG(dev, "rx_fifo_size : %d (%d gige)\n", dev->rx_fifo_size, dev->rx_fifo_size_gige);
--
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