+++ /dev/null
-/*
- * Ethernet device driver for Gemini SoC (SL351x GMAC).
- *
- * Copyright (C) 2011, Tobias Waldvogel <tobias.waldvogel@gmail.com>
- *
- * Based on work by Michał Mirosław <mirq-linux@rere.qmqm.pl> and
- * Paulius Zaleckas <paulius.zaleckas@gmail.com> and
- * Giuseppe De Robertis <Giuseppe.DeRobertis@ba.infn.it> and
- * GPLd spaghetti code from Raidsonic and other Gemini-based NAS vendors.
- *
- * 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>
-#include <linux/kernel.h>
-#include <linux/init.h>
-
-#include <linux/spinlock.h>
-#include <linux/slab.h>
-#include <linux/dma-mapping.h>
-#include <linux/cache.h>
-#include <linux/interrupt.h>
-
-#include <linux/platform_device.h>
-#include <linux/etherdevice.h>
-#include <linux/if_vlan.h>
-#include <linux/skbuff.h>
-#include <linux/phy.h>
-#include <linux/crc32.h>
-#include <linux/ethtool.h>
-#include <linux/tcp.h>
-#include <linux/u64_stats_sync.h>
-
-#include <linux/in.h>
-#include <linux/ip.h>
-#include <linux/ipv6.h>
-
-#include <mach/hardware.h>
-#include <mach/global_reg.h>
-
-#include <mach/gmac.h>
-#include "sl351x_hw.h"
-
-#define DRV_NAME "gmac-gemini"
-#define DRV_VERSION "1.0"
-
-#define HSIZE_8 0b00
-#define HSIZE_16 0b01
-#define HSIZE_32 0b10
-
-#define HBURST_SINGLE 0b00
-#define HBURST_INCR 0b01
-#define HBURST_INCR4 0b10
-#define HBURST_INCR8 0b11
-
-#define HPROT_DATA_CACHE BIT(0)
-#define HPROT_PRIVILIGED BIT(1)
-#define HPROT_BUFFERABLE BIT(2)
-#define HPROT_CACHABLE BIT(3)
-
-#define DEFAULT_RX_COALESCE_NSECS 0
-#define DEFAULT_GMAC_RXQ_ORDER 9
-#define DEFAULT_GMAC_TXQ_ORDER 8
-#define DEFAULT_RX_BUF_ORDER 11
-#define DEFAULT_NAPI_WEIGHT 64
-#define TX_MAX_FRAGS 16
-#define TX_QUEUE_NUM 1 /* max: 6 */
-#define RX_MAX_ALLOC_ORDER 2
-
-#define GMAC0_IRQ0_2 (GMAC0_TXDERR_INT_BIT|GMAC0_TXPERR_INT_BIT| \
- GMAC0_RXDERR_INT_BIT|GMAC0_RXPERR_INT_BIT)
-#define GMAC0_IRQ0_TXQ0_INTS (GMAC0_SWTQ00_EOF_INT_BIT| \
- GMAC0_SWTQ00_FIN_INT_BIT)
-#define GMAC0_IRQ4_8 (GMAC0_MIB_INT_BIT|GMAC0_RX_OVERRUN_INT_BIT)
-
-#define GMAC_OFFLOAD_FEATURES (NETIF_F_SG | NETIF_F_IP_CSUM | \
- NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | \
- NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
-
-MODULE_AUTHOR("Tobias Waldvogel");
-MODULE_DESCRIPTION("StorLink SL351x (Gemini) ethernet driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" DRV_NAME);
-
-struct toe_private {
- void __iomem *iomem;
- spinlock_t irq_lock;
-
- struct net_device *netdev[2];
- __le32 mac_addr[2][3];
-
- struct device *dev;
- int irq;
-
- unsigned int freeq_order;
- unsigned int freeq_frag_order;
- GMAC_RXDESC_T *freeq_ring;
- dma_addr_t freeq_dma_base;
- struct page **freeq_page_tab;
- spinlock_t freeq_lock;
-};
-
-struct gmac_txq {
- GMAC_TXDESC_T *ring;
- struct sk_buff **skb;
- unsigned int cptr;
- unsigned int noirq_packets;
-};
-
-struct gmac_private {
- unsigned int num;
- struct toe_private *toe;
- void __iomem *ctl_iomem;
- void __iomem *dma_iomem;
-
- void __iomem *rxq_rwptr;
- GMAC_RXDESC_T *rxq_ring;
- unsigned int rxq_order;
-
- struct napi_struct napi;
- struct hrtimer rx_coalesce_timer;
- unsigned int rx_coalesce_nsecs;
- unsigned int freeq_refill;
- struct gmac_txq txq[TX_QUEUE_NUM];
- unsigned int txq_order;
- unsigned int irq_every_tx_packets;
-
- dma_addr_t rxq_dma_base;
- dma_addr_t txq_dma_base;
-
- unsigned int msg_enable;
- spinlock_t config_lock;
-
- struct u64_stats_sync tx_stats_syncp;
- struct u64_stats_sync rx_stats_syncp;
- struct u64_stats_sync ir_stats_syncp;
-
- struct rtnl_link_stats64 stats;
- u64 hw_stats[RX_STATS_NUM];
- u64 rx_stats[RX_STATUS_NUM];
- u64 rx_csum_stats[RX_CHKSUM_NUM];
- u64 rx_napi_exits;
- u64 tx_frag_stats[TX_MAX_FRAGS];
- u64 tx_frags_linearized;
- u64 tx_hw_csummed;
-};
-
-#define GMAC_STATS_NUM ( \
- RX_STATS_NUM + RX_STATUS_NUM + RX_CHKSUM_NUM + 1 + \
- TX_MAX_FRAGS + 2)
-
-static const char gmac_stats_strings[GMAC_STATS_NUM][ETH_GSTRING_LEN] = {
- "GMAC_IN_DISCARDS",
- "GMAC_IN_ERRORS",
- "GMAC_IN_MCAST",
- "GMAC_IN_BCAST",
- "GMAC_IN_MAC1",
- "GMAC_IN_MAC2",
- "RX_STATUS_GOOD_FRAME",
- "RX_STATUS_TOO_LONG_GOOD_CRC",
- "RX_STATUS_RUNT_FRAME",
- "RX_STATUS_SFD_NOT_FOUND",
- "RX_STATUS_CRC_ERROR",
- "RX_STATUS_TOO_LONG_BAD_CRC",
- "RX_STATUS_ALIGNMENT_ERROR",
- "RX_STATUS_TOO_LONG_BAD_ALIGN",
- "RX_STATUS_RX_ERR",
- "RX_STATUS_DA_FILTERED",
- "RX_STATUS_BUFFER_FULL",
- "RX_STATUS_11",
- "RX_STATUS_12",
- "RX_STATUS_13",
- "RX_STATUS_14",
- "RX_STATUS_15",
- "RX_CHKSUM_IP_UDP_TCP_OK",
- "RX_CHKSUM_IP_OK_ONLY",
- "RX_CHKSUM_NONE",
- "RX_CHKSUM_3",
- "RX_CHKSUM_IP_ERR_UNKNOWN",
- "RX_CHKSUM_IP_ERR",
- "RX_CHKSUM_TCP_UDP_ERR",
- "RX_CHKSUM_7",
- "RX_NAPI_EXITS",
- "TX_FRAGS[1]",
- "TX_FRAGS[2]",
- "TX_FRAGS[3]",
- "TX_FRAGS[4]",
- "TX_FRAGS[5]",
- "TX_FRAGS[6]",
- "TX_FRAGS[7]",
- "TX_FRAGS[8]",
- "TX_FRAGS[9]",
- "TX_FRAGS[10]",
- "TX_FRAGS[11]",
- "TX_FRAGS[12]",
- "TX_FRAGS[13]",
- "TX_FRAGS[14]",
- "TX_FRAGS[15]",
- "TX_FRAGS[16+]",
- "TX_FRAGS_LINEARIZED",
- "TX_HW_CSUMMED",
-};
-
-static void gmac_dump_dma_state(struct net_device *dev);
-
-static void gmac_update_config0_reg(struct net_device *dev, u32 val, u32 vmask)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- unsigned long flags;
- u32 reg;
-
- spin_lock_irqsave(&gmac->config_lock, flags);
-
- reg = readl(gmac->ctl_iomem + GMAC_CONFIG0);
- reg = (reg & ~vmask) | val;
- writel(reg, gmac->ctl_iomem + GMAC_CONFIG0);
-
- spin_unlock_irqrestore(&gmac->config_lock, flags);
-}
-
-static void gmac_enable_tx_rx(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- void __iomem *config0 = gmac->ctl_iomem + GMAC_CONFIG0;
- unsigned long flags;
- u32 reg;
-
- spin_lock_irqsave(&gmac->config_lock, flags);
-
- reg = readl(config0);
- reg &= ~CONFIG0_TX_RX_DISABLE;
- writel(reg, config0);
-
- spin_unlock_irqrestore(&gmac->config_lock, flags);
-}
-
-static void gmac_disable_tx_rx(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- void __iomem *config0 = gmac->ctl_iomem + GMAC_CONFIG0;
- unsigned long flags;
- u32 reg;
-
- spin_lock_irqsave(&gmac->config_lock, flags);
-
- reg = readl(config0);
- reg |= CONFIG0_TX_RX_DISABLE;
- writel(reg, config0);
-
- spin_unlock_irqrestore(&gmac->config_lock, flags);
-
- mdelay(10); /* let GMAC consume packet */
-}
-
-static void gmac_set_flow_control(struct net_device *dev, bool tx, bool rx)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- void __iomem *config0 = gmac->ctl_iomem + GMAC_CONFIG0;
- unsigned long flags;
- u32 reg;
-
- spin_lock_irqsave(&gmac->config_lock, flags);
-
- reg = readl(config0);
- reg &= ~CONFIG0_FLOW_CTL;
- if (tx)
- reg |= CONFIG0_FLOW_TX;
- if (rx)
- reg |= CONFIG0_FLOW_RX;
- writel(reg, config0);
-
- spin_unlock_irqrestore(&gmac->config_lock, flags);
-}
-
-static void gmac_update_link_state(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- void __iomem *status_reg = gmac->ctl_iomem + GMAC_STATUS;
- struct phy_device *phydev = dev->phydev;
- GMAC_STATUS_T status, old_status;
- int pause_tx=0, pause_rx=0;
-
- old_status.bits32 = status.bits32 = readl(status_reg);
-
- status.bits.link = phydev->link;
- status.bits.duplex = phydev->duplex;
-
- switch (phydev->speed) {
- case 1000:
- status.bits.speed = GMAC_SPEED_1000;
- if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
- status.bits.mii_rmii = GMAC_PHY_RGMII_1000;
- break;
- case 100:
- status.bits.speed = GMAC_SPEED_100;
- if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
- status.bits.mii_rmii = GMAC_PHY_RGMII_100_10;
- break;
- case 10:
- status.bits.speed = GMAC_SPEED_10;
- if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
- status.bits.mii_rmii = GMAC_PHY_RGMII_100_10;
- break;
- default:
- netdev_warn(dev, "Not supported PHY speed (%d)\n",
- phydev->speed);
- }
-
- if (phydev->duplex == DUPLEX_FULL) {
- u16 lcladv = phy_read(phydev, MII_ADVERTISE);
- u16 rmtadv = phy_read(phydev, MII_LPA);
- u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
-
- if (cap & FLOW_CTRL_RX)
- pause_rx=1;
- if (cap & FLOW_CTRL_TX)
- pause_tx=1;
- }
-
- gmac_set_flow_control(dev, pause_tx, pause_rx);
-
- if (old_status.bits32 == status.bits32)
- return;
-
- if (netif_msg_link(gmac)) {
- phy_print_status(phydev);
- netdev_info(dev, "link flow control: %s\n",
- phydev->pause
- ? (phydev->asym_pause ? "tx" : "both")
- : (phydev->asym_pause ? "rx" : "none")
- );
- }
-
- gmac_disable_tx_rx(dev);
- writel(status.bits32, status_reg);
- gmac_enable_tx_rx(dev);
-}
-
-static int gmac_setup_phy(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- struct gemini_gmac_platform_data *pdata = toe->dev->platform_data;
- GMAC_STATUS_T status = { .bits32 = 0 };
- int num = dev->dev_id;
-
- dev->phydev = phy_connect(dev, pdata->bus_id[num],
- &gmac_update_link_state, pdata->interface[num]);
-
- if (IS_ERR(dev->phydev)) {
- int err = PTR_ERR(dev->phydev);
- dev->phydev = NULL;
- return err;
- }
-
- dev->phydev->supported &= PHY_GBIT_FEATURES;
- dev->phydev->supported |= SUPPORTED_Asym_Pause | SUPPORTED_Pause;
- dev->phydev->advertising = dev->phydev->supported;
-
- /* set PHY interface type */
- switch (dev->phydev->interface) {
- case PHY_INTERFACE_MODE_MII:
- status.bits.mii_rmii = GMAC_PHY_MII;
- break;
- case PHY_INTERFACE_MODE_GMII:
- status.bits.mii_rmii = GMAC_PHY_GMII;
- break;
- case PHY_INTERFACE_MODE_RGMII:
- status.bits.mii_rmii = GMAC_PHY_RGMII_100_10;
- break;
- default:
- netdev_err(dev, "Unsupported MII interface\n");
- phy_disconnect(dev->phydev);
- dev->phydev = NULL;
- return -EINVAL;
- }
- writel(status.bits32, gmac->ctl_iomem + GMAC_STATUS);
-
- return 0;
-}
-
-static int gmac_pick_rx_max_len(int max_l3_len)
-{
- /* index = CONFIG_MAXLEN_XXX values */
- static const int max_len[8] = {
- 1536, 1518, 1522, 1542,
- 9212, 10236, 1518, 1518
- };
- int i, n = 5;
-
- max_l3_len += ETH_HLEN + VLAN_HLEN;
-
- if (max_l3_len > max_len[n])
- return -1;
-
- for (i = 0; i < 5; ++i) {
- if (max_len[i] >= max_l3_len && max_len[i] < max_len[n])
- n = i;
- }
-
- return n;
-}
-
-static int gmac_init(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- u32 val;
-
- GMAC_CONFIG0_T config0 = { .bits = {
- .dis_tx = 1,
- .dis_rx = 1,
- .ipv4_rx_chksum = 1,
- .ipv6_rx_chksum = 1,
- .rx_err_detect = 1,
- .rgmm_edge = 1,
- .port0_chk_hwq = 1,
- .port1_chk_hwq = 1,
- .port0_chk_toeq = 1,
- .port1_chk_toeq = 1,
- .port0_chk_classq = 1,
- .port1_chk_classq = 1,
- } };
- GMAC_AHB_WEIGHT_T ahb_weight = { .bits = {
- .rx_weight = 1,
- .tx_weight = 1,
- .hash_weight = 1,
- .pre_req = 0x1f,
- .tqDV_threshold = 0,
- } };
- GMAC_TX_WCR0_T hw_weigh = { .bits = {
- .hw_tq3 = 1,
- .hw_tq2 = 1,
- .hw_tq1 = 1,
- .hw_tq0 = 1,
- } };
- GMAC_TX_WCR1_T sw_weigh = { .bits = {
- .sw_tq5 = 1,
- .sw_tq4 = 1,
- .sw_tq3 = 1,
- .sw_tq2 = 1,
- .sw_tq1 = 1,
- .sw_tq0 = 1,
- } };
- GMAC_CONFIG1_T config1 = { .bits = {
- .set_threshold = 16,
- .rel_threshold = 24,
- } };
- GMAC_CONFIG2_T config2 = { .bits = {
- .set_threshold = 16,
- .rel_threshold = 32,
- } };
- GMAC_CONFIG3_T config3 = { .bits = {
- .set_threshold = 0,
- .rel_threshold = 0,
- } };
-
- config0.bits.max_len = gmac_pick_rx_max_len(dev->mtu);
-
- val = readl(gmac->ctl_iomem + GMAC_CONFIG0);
- config0.bits.reserved = ((GMAC_CONFIG0_T)val).bits.reserved;
- writel(config0.bits32, gmac->ctl_iomem + GMAC_CONFIG0);
- writel(config1.bits32, gmac->ctl_iomem + GMAC_CONFIG1);
- writel(config2.bits32, gmac->ctl_iomem + GMAC_CONFIG2);
- writel(config3.bits32, gmac->ctl_iomem + GMAC_CONFIG3);
-
- val = readl(gmac->dma_iomem + GMAC_AHB_WEIGHT_REG);
- writel(ahb_weight.bits32, gmac->dma_iomem + GMAC_AHB_WEIGHT_REG);
-
- writel(hw_weigh.bits32,
- gmac->dma_iomem + GMAC_TX_WEIGHTING_CTRL_0_REG);
- writel(sw_weigh.bits32,
- gmac->dma_iomem + GMAC_TX_WEIGHTING_CTRL_1_REG);
-
- gmac->rxq_order = DEFAULT_GMAC_RXQ_ORDER;
- gmac->txq_order = DEFAULT_GMAC_TXQ_ORDER;
- gmac->rx_coalesce_nsecs = DEFAULT_RX_COALESCE_NSECS;
-
- /* Mark every quarter of the queue a packet for interrupt
- in order to be able to wake up the queue if it was stopped */
- gmac->irq_every_tx_packets = 1 << (gmac->txq_order - 2);
-
- return 0;
-}
-
-static void gmac_uninit(struct net_device *dev)
-{
- if (dev->phydev)
- phy_disconnect(dev->phydev);
-}
-
-static int gmac_setup_txqs(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- void __iomem *rwptr_reg = gmac->dma_iomem + GMAC_SW_TX_QUEUE0_PTR_REG;
- void __iomem *base_reg = gmac->dma_iomem + GMAC_SW_TX_QUEUE_BASE_REG;
-
- unsigned int n_txq = dev->num_tx_queues;
- size_t entries = 1 <<gmac->txq_order;
- size_t len = n_txq * entries;
- struct gmac_txq *txq = gmac->txq;
- GMAC_TXDESC_T *desc_ring;
- struct sk_buff **skb_tab;
- unsigned int r;
- int i;
-
- skb_tab = kzalloc(len * sizeof(*skb_tab), GFP_KERNEL);
- if (!skb_tab)
- return -ENOMEM;
-
- desc_ring = dma_alloc_coherent(toe->dev, len * sizeof(*desc_ring),
- &gmac->txq_dma_base, GFP_KERNEL);
-
- if (!desc_ring) {
- kfree(skb_tab);
- return -ENOMEM;
- }
-
- BUG_ON(gmac->txq_dma_base & ~DMA_Q_BASE_MASK);
-
- writel(gmac->txq_dma_base | gmac->txq_order, base_reg);
-
- for (i = 0; i < n_txq; i++) {
- txq->ring = desc_ring;
- txq->skb = skb_tab;
- txq->noirq_packets = 0;
-
- r = readw(rwptr_reg);
- rwptr_reg += 2;
- writew(r, rwptr_reg);
- rwptr_reg +=2;
- txq->cptr = r;
-
- txq++;
- desc_ring += entries;
- skb_tab += entries;
- }
-
- return 0;
-}
-
-static void gmac_clean_txq(struct net_device *dev, struct gmac_txq *txq,
- unsigned int r)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- unsigned int errs = 0;
- unsigned int pkts = 0;
- unsigned int hwchksum = 0;
- unsigned long bytes = 0;
- unsigned int m = (1 << gmac->txq_order) - 1;
- unsigned int c = txq->cptr;
- GMAC_TXDESC_0_T word0;
- GMAC_TXDESC_1_T word1;
- unsigned int word3;
- dma_addr_t mapping;
- GMAC_TXDESC_T *txd;
- unsigned short nfrags;
-
- if (unlikely(c == r))
- return;
-
- rmb();
- while (c != r) {
- txd = txq->ring + c;
- word0 = txd->word0;
- word1 = txd->word1;
- mapping = txd->word2.buf_adr;
- word3 = txd->word3.bits32;
-
- dma_unmap_single(toe->dev, mapping, word0.bits.buffer_size, DMA_TO_DEVICE);
-
- if (word3 & EOF_BIT)
- dev_kfree_skb(txq->skb[c]);
-
- c++;
- c &= m;
-
- if (!(word3 & SOF_BIT))
- continue;
-
- if (!word0.bits.status_tx_ok) {
- errs++;
- continue;
- }
-
- pkts++;
- bytes += txd->word1.bits.byte_count;
-
- if (word1.bits32 & TSS_CHECKUM_ENABLE)
- hwchksum++;
-
- nfrags = word0.bits.desc_count - 1;
- if (nfrags) {
- if (nfrags >= TX_MAX_FRAGS)
- nfrags = TX_MAX_FRAGS - 1;
-
- u64_stats_update_begin(&gmac->tx_stats_syncp);
- gmac->tx_frag_stats[nfrags]++;
- u64_stats_update_end(&gmac->ir_stats_syncp);
- }
- }
-
- u64_stats_update_begin(&gmac->ir_stats_syncp);
- gmac->stats.tx_errors += errs;
- gmac->stats.tx_packets += pkts;
- gmac->stats.tx_bytes += bytes;
- gmac->tx_hw_csummed += hwchksum;
- u64_stats_update_end(&gmac->ir_stats_syncp);
-
- txq->cptr = c;
-}
-
-static void gmac_cleanup_txqs(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- void __iomem *rwptr_reg = gmac->dma_iomem + GMAC_SW_TX_QUEUE0_PTR_REG;
- void __iomem *base_reg = gmac->dma_iomem + GMAC_SW_TX_QUEUE_BASE_REG;
-
- unsigned n_txq = dev->num_tx_queues;
- unsigned int r, i;
-
- for (i = 0; i < n_txq; i++) {
- r = readw(rwptr_reg);
- rwptr_reg += 2;
- writew(r, rwptr_reg);
- rwptr_reg += 2;
-
- gmac_clean_txq(dev, gmac->txq + i, r);
- }
- writel(0, base_reg);
-
- kfree(gmac->txq->skb);
- dma_free_coherent(toe->dev,
- n_txq * sizeof(*gmac->txq->ring) << gmac->txq_order,
- gmac->txq->ring, gmac->txq_dma_base);
-}
-
-static int gmac_setup_rxq(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- NONTOE_QHDR_T __iomem *qhdr = toe->iomem + TOE_DEFAULT_Q_HDR_BASE(dev->dev_id);
-
- gmac->rxq_rwptr = &qhdr->word1;
- gmac->rxq_ring = dma_alloc_coherent(toe->dev,
- sizeof(*gmac->rxq_ring) << gmac->rxq_order,
- &gmac->rxq_dma_base, GFP_KERNEL);
- if (!gmac->rxq_ring)
- return -ENOMEM;
-
- BUG_ON(gmac->rxq_dma_base & ~NONTOE_QHDR0_BASE_MASK);
-
- writel(gmac->rxq_dma_base | gmac->rxq_order, &qhdr->word0);
- writel(0, gmac->rxq_rwptr);
- return 0;
-}
-
-static void gmac_cleanup_rxq(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
-
- NONTOE_QHDR_T __iomem *qhdr = toe->iomem + TOE_DEFAULT_Q_HDR_BASE(dev->dev_id);
- void __iomem *dma_reg = &qhdr->word0;
- void __iomem *ptr_reg = &qhdr->word1;
- GMAC_RXDESC_T *rxd = gmac->rxq_ring;
- DMA_RWPTR_T rw;
- unsigned int r, w;
- unsigned int m = (1 <<gmac->rxq_order) - 1;
- struct page *page;
- dma_addr_t mapping;
-
- rw.bits32 = readl(ptr_reg);
- r = rw.bits.rptr;
- w = rw.bits.wptr;
- writew(r, ptr_reg + 2);
-
- writel(0, dma_reg);
-
- rmb();
- while (r != w) {
- mapping = rxd[r].word2.buf_adr;
- r++;
- r &= m;
-
- if (!mapping)
- continue;
-
- page = pfn_to_page(dma_to_pfn(toe->dev, mapping));
- put_page(page);
- }
-
- dma_free_coherent(toe->dev, sizeof(*gmac->rxq_ring) << gmac->rxq_order,
- gmac->rxq_ring, gmac->rxq_dma_base);
-}
-
-static struct page *toe_freeq_alloc_map_page(struct toe_private *toe, int pn)
-{
- unsigned int fpp_order = PAGE_SHIFT - toe->freeq_frag_order;
- unsigned int frag_len = 1 << toe->freeq_frag_order;
- GMAC_RXDESC_T *freeq_entry;
- dma_addr_t mapping;
- struct page *page;
- int i;
-
- page = alloc_page(__GFP_COLD | GFP_ATOMIC);
- if (!page)
- return NULL;
-
- mapping = dma_map_single(toe->dev, page_address(page),
- PAGE_SIZE, DMA_FROM_DEVICE);
-
- if (unlikely(dma_mapping_error(toe->dev, mapping) || !mapping)) {
- put_page(page);
- return NULL;
- }
-
- freeq_entry = toe->freeq_ring + (pn << fpp_order);
- for (i = 1 << fpp_order; i > 0; --i) {
- freeq_entry->word2.buf_adr = mapping;
- freeq_entry++;
- mapping += frag_len;
- }
-
- if (toe->freeq_page_tab[pn]) {
- mapping = toe->freeq_ring[pn << fpp_order].word2.buf_adr;
- dma_unmap_single(toe->dev, mapping, frag_len, DMA_FROM_DEVICE);
- put_page(toe->freeq_page_tab[pn]);
- }
-
- toe->freeq_page_tab[pn] = page;
- return page;
-}
-
-static unsigned int toe_fill_freeq(struct toe_private *toe, int reset)
-{
- void __iomem *rwptr_reg = toe->iomem + GLOBAL_SWFQ_RWPTR_REG;
-
- DMA_RWPTR_T rw;
- unsigned int pn, epn;
- unsigned int fpp_order = PAGE_SHIFT - toe->freeq_frag_order;
- unsigned int m_pn = (1 << (toe->freeq_order - fpp_order)) - 1;
- struct page *page;
- unsigned int count = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&toe->freeq_lock, flags);
-
- rw.bits32 = readl(rwptr_reg);
- pn = (reset ? rw.bits.rptr : rw.bits.wptr) >> fpp_order;
- epn = (rw.bits.rptr >> fpp_order) - 1;
- epn &= m_pn;
-
- while (pn != epn) {
- page = toe->freeq_page_tab[pn];
-
- if (atomic_read(&page->_count) > 1) {
- unsigned int fl = (pn -epn) & m_pn;
-
- if (fl > 64 >> fpp_order)
- break;
-
- page = toe_freeq_alloc_map_page(toe, pn);
- if (!page)
- break;
- }
-
- atomic_add(1 << fpp_order, &page->_count);
- count += 1 << fpp_order;
- pn++;
- pn &= m_pn;
- }
-
- wmb();
- writew(pn << fpp_order, rwptr_reg+2);
-
- spin_unlock_irqrestore(&toe->freeq_lock, flags);
- return count;
-}
-
-static int toe_setup_freeq(struct toe_private *toe)
-{
- void __iomem *dma_reg = toe->iomem + GLOBAL_SW_FREEQ_BASE_SIZE_REG;
- QUEUE_THRESHOLD_T qt;
- DMA_SKB_SIZE_T skbsz;
- unsigned int filled;
- unsigned int frag_len = 1 << toe->freeq_frag_order;
- unsigned int len = 1 << toe->freeq_order;
- unsigned int fpp_order = PAGE_SHIFT - toe->freeq_frag_order;
- unsigned int pages = len >> fpp_order;
- dma_addr_t mapping;
- unsigned int pn;
-
- toe->freeq_ring = dma_alloc_coherent(toe->dev,
- sizeof(*toe->freeq_ring) << toe->freeq_order,
- &toe->freeq_dma_base, GFP_KERNEL);
- if (!toe->freeq_ring)
- return -ENOMEM;
-
- BUG_ON(toe->freeq_dma_base & ~DMA_Q_BASE_MASK);
-
- toe->freeq_page_tab = kzalloc(pages * sizeof(*toe->freeq_page_tab),
- GFP_KERNEL);
- if (!toe->freeq_page_tab)
- goto err_freeq;
-
- for (pn = 0; pn < pages; pn++)
- if (!toe_freeq_alloc_map_page(toe, pn))
- goto err_freeq_alloc;
-
- filled = toe_fill_freeq(toe, 1);
- if (!filled)
- goto err_freeq_alloc;
-
- qt.bits32 = readl(toe->iomem + GLOBAL_QUEUE_THRESHOLD_REG);
- qt.bits.swfq_empty = 32;
- writel(qt.bits32, toe->iomem + GLOBAL_QUEUE_THRESHOLD_REG);
-
- skbsz.bits.sw_skb_size = 1 << toe->freeq_frag_order;
- writel(skbsz.bits32, toe->iomem + GLOBAL_DMA_SKB_SIZE_REG);
- writel(toe->freeq_dma_base | toe->freeq_order, dma_reg);
-
- return 0;
-
-err_freeq_alloc:
- while (pn > 0) {
- --pn;
- mapping = toe->freeq_ring[pn << fpp_order].word2.buf_adr;
- dma_unmap_single(toe->dev, mapping, frag_len, DMA_FROM_DEVICE);
- put_page(toe->freeq_page_tab[pn]);
- }
-
-err_freeq:
- dma_free_coherent(toe->dev,
- sizeof(*toe->freeq_ring) << toe->freeq_order,
- toe->freeq_ring, toe->freeq_dma_base);
- toe->freeq_ring = NULL;
- return -ENOMEM;
-}
-
-static void toe_cleanup_freeq(struct toe_private *toe)
-{
- void __iomem *dma_reg = toe->iomem + GLOBAL_SW_FREEQ_BASE_SIZE_REG;
- void __iomem *ptr_reg = toe->iomem + GLOBAL_SWFQ_RWPTR_REG;
-
- unsigned int frag_len = 1 << toe->freeq_frag_order;
- unsigned int len = 1 << toe->freeq_order;
- unsigned int fpp_order = PAGE_SHIFT - toe->freeq_frag_order;
- unsigned int pages = len >> fpp_order;
- struct page *page;
- dma_addr_t mapping;
- unsigned int pn;
-
- writew(readw(ptr_reg), ptr_reg + 2);
- writel(0, dma_reg);
-
- for (pn = 0; pn < pages; pn++) {
- mapping = toe->freeq_ring[pn << fpp_order].word2.buf_adr;
- dma_unmap_single(toe->dev, mapping, frag_len, DMA_FROM_DEVICE);
-
- page = toe->freeq_page_tab[pn];
- while (atomic_read(&page->_count) > 0)
- put_page(page);
- }
-
- kfree(toe->freeq_page_tab);
-
- dma_free_coherent(toe->dev,
- sizeof(*toe->freeq_ring) << toe->freeq_order,
- toe->freeq_ring, toe->freeq_dma_base);
-}
-
-static int toe_resize_freeq(struct toe_private *toe, int changing_dev_id)
-{
- void __iomem *irqen_reg = toe->iomem + GLOBAL_INTERRUPT_ENABLE_4_REG;
- struct gmac_private *gmac;
- struct net_device *other = toe->netdev[1 - changing_dev_id];
- unsigned new_size = 0;
- unsigned new_order;
- int err;
- unsigned long flags;
- unsigned en;
-
- if (other && netif_running(other))
- return -EBUSY;
-
- if (toe->netdev[0]) {
- gmac = netdev_priv(toe->netdev[0]);
- new_size = 1 << (gmac->rxq_order + 1);
- }
-
- if (toe->netdev[1]) {
- gmac = netdev_priv(toe->netdev[1]);
- new_size += 1 << (gmac->rxq_order + 1);
- }
-
- new_order = min(15, ilog2(new_size - 1) + 1);
- if (toe->freeq_order == new_order)
- return 0;
-
- spin_lock_irqsave(&toe->irq_lock, flags);
- en = readl(irqen_reg);
- en &= ~SWFQ_EMPTY_INT_BIT;
- writel(en, irqen_reg);
-
- if (toe->freeq_ring)
- toe_cleanup_freeq(toe);
-
- toe->freeq_order = new_order;
- err = toe_setup_freeq(toe);
-
- en |= SWFQ_EMPTY_INT_BIT;
- writel(en, irqen_reg);
- spin_unlock_irqrestore(&toe->irq_lock, flags);
-
- return err;
-}
-
-static void gmac_tx_irq_enable(struct net_device *dev, unsigned txq, int en)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- unsigned val, mask;
-
- mask = GMAC0_IRQ0_TXQ0_INTS << (6 * dev->dev_id + txq);
-
- if (en)
- writel(mask, toe->iomem + GLOBAL_INTERRUPT_STATUS_0_REG);
-
- val = readl(toe->iomem + GLOBAL_INTERRUPT_ENABLE_0_REG);
- val = en ? val | mask : val & ~mask;
- writel(val, toe->iomem + GLOBAL_INTERRUPT_ENABLE_0_REG);
-}
-
-
-static void gmac_tx_irq(struct net_device *dev, unsigned txq_num)
-{
- struct netdev_queue *ntxq = netdev_get_tx_queue(dev, txq_num);
-
- gmac_tx_irq_enable(dev, txq_num, 0);
- netif_tx_wake_queue(ntxq);
-}
-
-static int gmac_map_tx_bufs(struct net_device *dev, struct sk_buff *skb,
- struct gmac_txq *txq, unsigned short *desc)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- struct skb_shared_info *skb_si = skb_shinfo(skb);
- skb_frag_t *skb_frag;
- short frag, last_frag = skb_si->nr_frags - 1;
- unsigned short m = (1 << gmac->txq_order) -1;
- unsigned short w = *desc;
- unsigned word1, word3, buflen;
- dma_addr_t mapping;
- void *buffer;
- unsigned short mtu;
- GMAC_TXDESC_T *txd;
-
- mtu = ETH_HLEN;
- mtu += dev->mtu;
- if (skb->protocol == htons(ETH_P_8021Q))
- mtu += VLAN_HLEN;
-
- word1 = skb->len;
- word3 = SOF_BIT;
-
- if (word1 > mtu) {
- word1 |= TSS_MTU_ENABLE_BIT;
- word3 += mtu;
- }
-
- if (skb->ip_summed != CHECKSUM_NONE) {
- int tcp = 0;
- if (skb->protocol == htons(ETH_P_IP)) {
- word1 |= TSS_IP_CHKSUM_BIT;
- tcp = ip_hdr(skb)->protocol == IPPROTO_TCP;
- } else { /* IPv6 */
- word1 |= TSS_IPV6_ENABLE_BIT;
- tcp = ipv6_hdr(skb)->nexthdr == IPPROTO_TCP;
- }
-
- word1 |= tcp ? TSS_TCP_CHKSUM_BIT : TSS_UDP_CHKSUM_BIT;
- }
-
- frag = -1;
- while (frag <= last_frag) {
- if (frag == -1) {
- buffer = skb->data;
- buflen = skb_headlen(skb);
- } else {
- skb_frag = skb_si->frags + frag;
- buffer = page_address(skb_frag_page(skb_frag)) +
- skb_frag->page_offset;
- buflen = skb_frag->size;
- }
-
- if (frag == last_frag) {
- word3 |= EOF_BIT;
- txq->skb[w] = skb;
- }
-
- mapping = dma_map_single(toe->dev, buffer, buflen,
- DMA_TO_DEVICE);
- if (dma_mapping_error(toe->dev, mapping) ||
- !(mapping & PAGE_MASK))
- goto map_error;
-
- txd = txq->ring + w;
- txd->word0.bits32 = buflen;
- txd->word1.bits32 = word1;
- txd->word2.buf_adr = mapping;
- txd->word3.bits32 = word3;
-
- word3 &= MTU_SIZE_BIT_MASK;
- w++;
- w &= m;
- frag++;
- }
-
- *desc = w;
- return 0;
-
-map_error:
- while (w != *desc) {
- w--;
- w &= m;
-
- dma_unmap_page(toe->dev, txq->ring[w].word2.buf_adr,
- txq->ring[w].word0.bits.buffer_size, DMA_TO_DEVICE);
- }
- return ENOMEM;
-}
-
-static int gmac_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
-
- void __iomem *ptr_reg;
- struct gmac_txq *txq;
- struct netdev_queue *ntxq;
- int txq_num, nfrags;
- DMA_RWPTR_T rw;
- unsigned short r, w, d;
- unsigned short m = (1 << gmac->txq_order) - 1;
-
- SKB_FRAG_ASSERT(skb);
-
- if (unlikely(skb->len >= 0x10000))
- goto out_drop_free;
-
- txq_num = skb_get_queue_mapping(skb);
- ptr_reg = gmac->dma_iomem + GMAC_SW_TX_QUEUE_PTR_REG(txq_num);
- txq = &gmac->txq[txq_num];
- ntxq = netdev_get_tx_queue(dev, txq_num);
- nfrags = skb_shinfo(skb)->nr_frags;
-
- rw.bits32 = readl(ptr_reg);
- r = rw.bits.rptr;
- w = rw.bits.wptr;
-
- d = txq->cptr - w - 1;
- d &= m;
-
- if (unlikely(d < nfrags+2))
- {
- gmac_clean_txq(dev, txq, r);
- d = txq->cptr - w - 1;
- d &= m;
-
- if (unlikely(d < nfrags+2)) {
- netif_tx_stop_queue(ntxq);
-
- d = txq->cptr + nfrags + 16;
- d &= m;
- txq->ring[d].word3.bits.eofie = 1;
- gmac_tx_irq_enable(dev, txq_num, 1);
-
- u64_stats_update_begin(&gmac->tx_stats_syncp);
- dev->stats.tx_fifo_errors++;
- u64_stats_update_end(&gmac->tx_stats_syncp);
- return NETDEV_TX_BUSY;
- }
- }
-
- if (unlikely(gmac_map_tx_bufs(dev, skb, txq, &w))) {
- if (skb_linearize(skb))
- goto out_drop;
-
- if (unlikely(gmac_map_tx_bufs(dev, skb, txq, &w)))
- goto out_drop_free;
-
- u64_stats_update_begin(&gmac->tx_stats_syncp);
- gmac->tx_frags_linearized++;
- u64_stats_update_end(&gmac->tx_stats_syncp);
- }
-
- writew(w, ptr_reg+2);
-
- gmac_clean_txq(dev, txq, r);
- return NETDEV_TX_OK;
-
-out_drop_free:
- dev_kfree_skb(skb);
-out_drop:
- u64_stats_update_begin(&gmac->tx_stats_syncp);
- gmac->stats.tx_dropped++;
- u64_stats_update_end(&gmac->tx_stats_syncp);
- return NETDEV_TX_OK;
-}
-
-static void gmac_tx_timeout(struct net_device *dev)
-{
- netdev_err(dev, "Tx timeout\n");
- gmac_dump_dma_state(dev);
-}
-
-static void gmac_enable_irq(struct net_device *dev, int enable)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- unsigned long flags;
- unsigned val, mask;
-
- spin_lock_irqsave(&toe->irq_lock, flags);
-
- mask = GMAC0_IRQ0_2 << (dev->dev_id * 2);
- val = readl(toe->iomem + GLOBAL_INTERRUPT_ENABLE_0_REG);
- val = enable ? (val | mask) : (val & ~mask);
- writel(val, toe->iomem + GLOBAL_INTERRUPT_ENABLE_0_REG);
-
- mask = DEFAULT_Q0_INT_BIT << dev->dev_id;
- val = readl(toe->iomem + GLOBAL_INTERRUPT_ENABLE_1_REG);
- val = enable ? (val | mask) : (val & ~mask);
- writel(val, toe->iomem + GLOBAL_INTERRUPT_ENABLE_1_REG);
-
- mask = GMAC0_IRQ4_8 << (dev->dev_id * 8);
- val = readl(toe->iomem + GLOBAL_INTERRUPT_ENABLE_4_REG);
- val = enable ? (val | mask) : (val & ~mask);
- writel(val, toe->iomem + GLOBAL_INTERRUPT_ENABLE_4_REG);
-
- spin_unlock_irqrestore(&toe->irq_lock, flags);
-}
-
-static void gmac_enable_rx_irq(struct net_device *dev, int enable)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- unsigned long flags;
- unsigned val, mask;
-
- spin_lock_irqsave(&toe->irq_lock, flags);
- mask = DEFAULT_Q0_INT_BIT << dev->dev_id;
-
- val = readl(toe->iomem + GLOBAL_INTERRUPT_ENABLE_1_REG);
- val = enable ? (val | mask) : (val & ~mask);
- writel(val, toe->iomem + GLOBAL_INTERRUPT_ENABLE_1_REG);
-
- spin_unlock_irqrestore(&toe->irq_lock, flags);
-}
-
-static struct sk_buff *gmac_skb_if_good_frame(struct gmac_private *gmac,
- GMAC_RXDESC_0_T word0, unsigned frame_len)
-{
- struct sk_buff *skb = NULL;
- unsigned rx_status = word0.bits.status;
- unsigned rx_csum = word0.bits.chksum_status;
-
- gmac->rx_stats[rx_status]++;
- gmac->rx_csum_stats[rx_csum]++;
-
- if (word0.bits.derr || word0.bits.perr ||
- rx_status || frame_len < ETH_ZLEN ||
- rx_csum >= RX_CHKSUM_IP_ERR_UNKNOWN) {
- gmac->stats.rx_errors++;
-
- if (frame_len < ETH_ZLEN || RX_ERROR_LENGTH(rx_status))
- gmac->stats.rx_length_errors++;
- if (RX_ERROR_OVER(rx_status))
- gmac->stats.rx_over_errors++;
- if (RX_ERROR_CRC(rx_status))
- gmac->stats.rx_crc_errors++;
- if (RX_ERROR_FRAME(rx_status))
- gmac->stats.rx_frame_errors++;
-
- return NULL;
- }
-
- skb = napi_get_frags(&gmac->napi);
- if (!skb)
- return NULL;
-
- if (rx_csum == RX_CHKSUM_IP_UDP_TCP_OK)
- skb->ip_summed = CHECKSUM_UNNECESSARY;
-
- gmac->stats.rx_bytes += frame_len;
- gmac->stats.rx_packets++;
- return skb;
-}
-
-static unsigned gmac_rx(struct net_device *dev, unsigned budget)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- void __iomem *ptr_reg = gmac->rxq_rwptr;
-
- static struct sk_buff *skb;
-
- DMA_RWPTR_T rw;
- unsigned short r, w;
- unsigned short m = (1 << gmac->rxq_order) -1;
- GMAC_RXDESC_T *rx = NULL;
- struct page* page = NULL;
- unsigned page_offs;
- unsigned int frame_len, frag_len;
- int frag_nr = 0;
-
- GMAC_RXDESC_0_T word0;
- GMAC_RXDESC_1_T word1;
- dma_addr_t mapping;
- GMAC_RXDESC_3_T word3;
-
- rw.bits32 = readl(ptr_reg);
- /* Reset interrupt as all packages until here are taken into account */
- writel(DEFAULT_Q0_INT_BIT << dev->dev_id,
- toe->iomem + GLOBAL_INTERRUPT_STATUS_1_REG);
- r = rw.bits.rptr;
- w = rw.bits.wptr;
-
- while (budget && w != r) {
- rx = gmac->rxq_ring + r;
- word0 = rx->word0;
- word1 = rx->word1;
- mapping = rx->word2.buf_adr;
- word3 = rx->word3;
-
- r++;
- r &= m;
-
- frag_len = word0.bits.buffer_size;
- frame_len =word1.bits.byte_count;
- page_offs = mapping & ~PAGE_MASK;
-
- if (unlikely(!mapping)) {
- netdev_err(dev, "rxq[%u]: HW BUG: zero DMA desc\n", r);
- goto err_drop;
- }
-
- page = pfn_to_page(dma_to_pfn(toe->dev, mapping));
-
- if (word3.bits32 & SOF_BIT) {
- if (unlikely(skb)) {
- napi_free_frags(&gmac->napi);
- gmac->stats.rx_dropped++;
- }
-
- skb = gmac_skb_if_good_frame(gmac, word0, frame_len);
- if (unlikely(!skb))
- goto err_drop;
-
- page_offs += NET_IP_ALIGN;
- frag_len -= NET_IP_ALIGN;
- frag_nr = 0;
-
- } else if (!skb) {
- put_page(page);
- continue;
- }
-
- if (word3.bits32 & EOF_BIT)
- frag_len = frame_len - skb->len;
-
- /* append page frag to skb */
- if (unlikely(frag_nr == MAX_SKB_FRAGS))
- goto err_drop;
-
- if (frag_len == 0)
- netdev_err(dev, "Received fragment with len = 0\n");
-
- skb_fill_page_desc(skb, frag_nr, page, page_offs, frag_len);
- skb->len += frag_len;
- skb->data_len += frag_len;
- skb->truesize += frag_len;
- frag_nr++;
-
- if (word3.bits32 & EOF_BIT) {
- napi_gro_frags(&gmac->napi);
- skb = NULL;
- --budget;
- }
- continue;
-
-err_drop:
- if (skb) {
- napi_free_frags(&gmac->napi);
- skb = NULL;
- }
-
- if (mapping)
- put_page(page);
-
- gmac->stats.rx_dropped++;
- }
-
- writew(r, ptr_reg);
- return budget;
-}
-
-static int gmac_napi_poll(struct napi_struct *napi, int budget)
-{
- struct gmac_private *gmac = netdev_priv(napi->dev);
- struct toe_private *toe = gmac->toe;
- unsigned rx;
- unsigned freeq_threshold = 1 << (toe->freeq_order - 1);
-
- u64_stats_update_begin(&gmac->rx_stats_syncp);
-
- rx = budget - gmac_rx(napi->dev, budget);
-
- if (rx == 0) {
- napi_gro_flush(napi, false);
- __napi_complete(napi);
- gmac_enable_rx_irq(napi->dev, 1);
- ++gmac->rx_napi_exits;
- }
-
- gmac->freeq_refill += rx;
- if (gmac->freeq_refill > freeq_threshold) {
- gmac->freeq_refill -= freeq_threshold;
- toe_fill_freeq(toe, 0);
- }
-
- u64_stats_update_end(&gmac->rx_stats_syncp);
- return budget;
-}
-
-static void gmac_dump_dma_state(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- void __iomem *ptr_reg;
- unsigned reg[5];
-
- /* Interrupt status */
- reg[0] = readl(toe->iomem + GLOBAL_INTERRUPT_STATUS_0_REG);
- reg[1] = readl(toe->iomem + GLOBAL_INTERRUPT_STATUS_1_REG);
- reg[2] = readl(toe->iomem + GLOBAL_INTERRUPT_STATUS_2_REG);
- reg[3] = readl(toe->iomem + GLOBAL_INTERRUPT_STATUS_3_REG);
- reg[4] = readl(toe->iomem + GLOBAL_INTERRUPT_STATUS_4_REG);
- netdev_err(dev, "IRQ status: 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
- reg[0], reg[1], reg[2], reg[3], reg[4]);
-
- /* Interrupt enable */
- reg[0] = readl(toe->iomem + GLOBAL_INTERRUPT_ENABLE_0_REG);
- reg[1] = readl(toe->iomem + GLOBAL_INTERRUPT_ENABLE_1_REG);
- reg[2] = readl(toe->iomem + GLOBAL_INTERRUPT_ENABLE_2_REG);
- reg[3] = readl(toe->iomem + GLOBAL_INTERRUPT_ENABLE_3_REG);
- reg[4] = readl(toe->iomem + GLOBAL_INTERRUPT_ENABLE_4_REG);
- netdev_err(dev, "IRQ enable: 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
- reg[0], reg[1], reg[2], reg[3], reg[4]);
-
- /* RX DMA status */
- reg[0] = readl(gmac->dma_iomem + GMAC_DMA_RX_FIRST_DESC_REG);
- reg[1] = readl(gmac->dma_iomem + GMAC_DMA_RX_CURR_DESC_REG);
- reg[2] = GET_RPTR(gmac->rxq_rwptr);
- reg[3] = GET_WPTR(gmac->rxq_rwptr);
- netdev_err(dev, "RX DMA regs: 0x%08x 0x%08x, ptr: %u %u\n",
- reg[0], reg[1], reg[2], reg[3]);
-
- reg[0] = readl(gmac->dma_iomem + GMAC_DMA_RX_DESC_WORD0_REG);
- reg[1] = readl(gmac->dma_iomem + GMAC_DMA_RX_DESC_WORD1_REG);
- reg[2] = readl(gmac->dma_iomem + GMAC_DMA_RX_DESC_WORD2_REG);
- reg[3] = readl(gmac->dma_iomem + GMAC_DMA_RX_DESC_WORD3_REG);
- netdev_err(dev, "RX DMA descriptor: 0x%08x 0x%08x 0x%08x 0x%08x\n",
- reg[0], reg[1], reg[2], reg[3]);
-
- /* TX DMA status */
- ptr_reg = gmac->dma_iomem + GMAC_SW_TX_QUEUE0_PTR_REG;
-
- reg[0] = readl(gmac->dma_iomem + GMAC_DMA_TX_FIRST_DESC_REG);
- reg[1] = readl(gmac->dma_iomem + GMAC_DMA_TX_CURR_DESC_REG);
- reg[2] = GET_RPTR(ptr_reg);
- reg[3] = GET_WPTR(ptr_reg);
- netdev_err(dev, "TX DMA regs: 0x%08x 0x%08x, ptr: %u %u\n",
- reg[0], reg[1], reg[2], reg[3]);
-
- reg[0] = readl(gmac->dma_iomem + GMAC_DMA_TX_DESC_WORD0_REG);
- reg[1] = readl(gmac->dma_iomem + GMAC_DMA_TX_DESC_WORD1_REG);
- reg[2] = readl(gmac->dma_iomem + GMAC_DMA_TX_DESC_WORD2_REG);
- reg[3] = readl(gmac->dma_iomem + GMAC_DMA_TX_DESC_WORD3_REG);
- netdev_err(dev, "TX DMA descriptor: 0x%08x 0x%08x 0x%08x 0x%08x\n",
- reg[0], reg[1], reg[2], reg[3]);
-
- /* FREE queues status */
- ptr_reg = toe->iomem + GLOBAL_SWFQ_RWPTR_REG;
-
- reg[0] = GET_RPTR(ptr_reg);
- reg[1] = GET_WPTR(ptr_reg);
-
- ptr_reg = toe->iomem + GLOBAL_HWFQ_RWPTR_REG;
-
- reg[2] = GET_RPTR(ptr_reg);
- reg[3] = GET_WPTR(ptr_reg);
- netdev_err(dev, "FQ SW ptr: %u %u, HW ptr: %u %u\n",
- reg[0], reg[1], reg[2], reg[3]);
-}
-
-static void gmac_update_hw_stats(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- unsigned long flags;
- unsigned int rx_discards, rx_mcast, rx_bcast;
-
- spin_lock_irqsave(&toe->irq_lock, flags);
- u64_stats_update_begin(&gmac->ir_stats_syncp);
-
- gmac->hw_stats[0] += rx_discards = readl(gmac->ctl_iomem + GMAC_IN_DISCARDS);
- gmac->hw_stats[1] += readl(gmac->ctl_iomem + GMAC_IN_ERRORS);
- gmac->hw_stats[2] += rx_mcast = readl(gmac->ctl_iomem + GMAC_IN_MCAST);
- gmac->hw_stats[3] += rx_bcast = readl(gmac->ctl_iomem + GMAC_IN_BCAST);
- gmac->hw_stats[4] += readl(gmac->ctl_iomem + GMAC_IN_MAC1);
- gmac->hw_stats[5] += readl(gmac->ctl_iomem + GMAC_IN_MAC2);
-
- gmac->stats.rx_missed_errors += rx_discards;
- gmac->stats.multicast += rx_mcast;
- gmac->stats.multicast += rx_bcast;
-
- writel(GMAC0_MIB_INT_BIT << (dev->dev_id * 8),
- toe->iomem + GLOBAL_INTERRUPT_STATUS_4_REG);
-
- u64_stats_update_end(&gmac->ir_stats_syncp);
- spin_unlock_irqrestore(&toe->irq_lock, flags);
-}
-
-static inline unsigned gmac_get_intr_flags(struct net_device *dev, int i)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- void __iomem *irqif_reg, *irqen_reg;
- unsigned offs, val;
-
- offs = i * (GLOBAL_INTERRUPT_STATUS_1_REG - GLOBAL_INTERRUPT_STATUS_0_REG);
-
- irqif_reg = toe->iomem + GLOBAL_INTERRUPT_STATUS_0_REG + offs;
- irqen_reg = toe->iomem + GLOBAL_INTERRUPT_ENABLE_0_REG + offs;
-
- val = readl(irqif_reg) & readl(irqen_reg);
- return val;
-}
-
-enum hrtimer_restart gmac_coalesce_delay_expired( struct hrtimer *timer )
-{
- struct gmac_private *gmac = container_of(timer, struct gmac_private, rx_coalesce_timer);
-
- napi_schedule(&gmac->napi);
- return HRTIMER_NORESTART;
-}
-
-static irqreturn_t gmac_irq(int irq, void *data)
-{
- struct net_device *dev = data;
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- unsigned val, orr = 0;
-
- orr |= val = gmac_get_intr_flags(dev, 0);
-
- if (unlikely(val & (GMAC0_IRQ0_2 << (dev->dev_id * 2)))) {
- /* oh, crap. */
- netdev_err(dev, "hw failure/sw bug\n");
- gmac_dump_dma_state(dev);
-
- /* don't know how to recover, just reduce losses */
- gmac_enable_irq(dev, 0);
- return IRQ_HANDLED;
- }
-
- if (val & (GMAC0_IRQ0_TXQ0_INTS << (dev->dev_id * 6)))
- gmac_tx_irq(dev, 0);
-
- orr |= val = gmac_get_intr_flags(dev, 1);
-
- if (val & (DEFAULT_Q0_INT_BIT << dev->dev_id)) {
-
- gmac_enable_rx_irq(dev, 0);
-
- if (!gmac->rx_coalesce_nsecs)
- napi_schedule(&gmac->napi);
- else {
- ktime_t ktime;
- ktime = ktime_set(0, gmac->rx_coalesce_nsecs);
- hrtimer_start(&gmac->rx_coalesce_timer, ktime, HRTIMER_MODE_REL);
- }
- }
-
- orr |= val = gmac_get_intr_flags(dev, 4);
-
- if (unlikely(val & (GMAC0_MIB_INT_BIT << (dev->dev_id * 8))))
- gmac_update_hw_stats(dev);
-
- if (unlikely(val & (GMAC0_RX_OVERRUN_INT_BIT << (dev->dev_id * 8)))) {
- writel(GMAC0_RXDERR_INT_BIT << (dev->dev_id * 8),
- toe->iomem + GLOBAL_INTERRUPT_STATUS_4_REG);
-
- spin_lock(&toe->irq_lock);
- u64_stats_update_begin(&gmac->ir_stats_syncp);
- ++gmac->stats.rx_fifo_errors;
- u64_stats_update_end(&gmac->ir_stats_syncp);
- spin_unlock(&toe->irq_lock);
- }
-
- return orr ? IRQ_HANDLED : IRQ_NONE;
-}
-
-static void gmac_start_dma(struct gmac_private *gmac)
-{
- void __iomem *dma_ctrl_reg = gmac->dma_iomem + GMAC_DMA_CTRL_REG;
- GMAC_DMA_CTRL_T dma_ctrl;
-
- dma_ctrl.bits32 = readl(dma_ctrl_reg);
- dma_ctrl.bits.rd_enable = 1;
- dma_ctrl.bits.td_enable = 1;
- dma_ctrl.bits.loopback = 0;
- dma_ctrl.bits.drop_small_ack = 0;
- dma_ctrl.bits.rd_insert_bytes = NET_IP_ALIGN;
- dma_ctrl.bits.rd_prot = HPROT_DATA_CACHE | HPROT_PRIVILIGED;
- dma_ctrl.bits.rd_burst_size = HBURST_INCR8;
- dma_ctrl.bits.rd_bus = HSIZE_8;
- dma_ctrl.bits.td_prot = HPROT_DATA_CACHE;
- dma_ctrl.bits.td_burst_size = HBURST_INCR8;
- dma_ctrl.bits.td_bus = HSIZE_8;
-
- writel(dma_ctrl.bits32, dma_ctrl_reg);
-}
-
-static void gmac_stop_dma(struct gmac_private *gmac)
-{
- void __iomem *dma_ctrl_reg = gmac->dma_iomem + GMAC_DMA_CTRL_REG;
- GMAC_DMA_CTRL_T dma_ctrl;
-
- dma_ctrl.bits32 = readl(dma_ctrl_reg);
- dma_ctrl.bits.rd_enable = 0;
- dma_ctrl.bits.td_enable = 0;
- writel(dma_ctrl.bits32, dma_ctrl_reg);
-}
-
-static int gmac_open(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- int err;
-
- if (!dev->phydev) {
- err = gmac_setup_phy(dev);
- if (err) {
- netif_err(gmac, ifup, dev,
- "PHY init failed: %d\n", err);
- return err;
- }
- }
-
- err = request_irq(dev->irq, gmac_irq,
- IRQF_SHARED, dev->name, dev);
- if (unlikely(err))
- return err;
-
- netif_carrier_off(dev);
- phy_start(dev->phydev);
-
- err = toe_resize_freeq(gmac->toe, dev->dev_id);
- if (unlikely(err))
- goto err_stop_phy;
-
- err = gmac_setup_rxq(dev);
- if (unlikely(err))
- goto err_stop_phy;
-
- err = gmac_setup_txqs(dev);
- if (unlikely(err)) {
- gmac_cleanup_rxq(dev);
- goto err_stop_phy;
- }
-
- napi_enable(&gmac->napi);
-
- gmac_start_dma(gmac);
- gmac_enable_irq(dev, 1);
- gmac_enable_tx_rx(dev);
- netif_tx_start_all_queues(dev);
-
- hrtimer_init(&gmac->rx_coalesce_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- gmac->rx_coalesce_timer.function = &gmac_coalesce_delay_expired;
- return 0;
-
-err_stop_phy:
- phy_stop(dev->phydev);
- free_irq(dev->irq, dev);
- return err;
-}
-
-static int gmac_stop(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
-
- hrtimer_cancel(&gmac->rx_coalesce_timer);
- netif_tx_stop_all_queues(dev);
- gmac_disable_tx_rx(dev);
- gmac_stop_dma(gmac);
- napi_disable(&gmac->napi);
-
- gmac_enable_irq(dev, 0);
- gmac_cleanup_rxq(dev);
- gmac_cleanup_txqs(dev);
-
- phy_stop(dev->phydev);
- free_irq(dev->irq, dev);
-
- gmac_update_hw_stats(dev);
- return 0;
-}
-
-static void gmac_set_rx_mode(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct netdev_hw_addr *ha;
- __u32 mc_filter[2];
- unsigned bit_nr;
- GMAC_RX_FLTR_T filter = { .bits = {
- .broadcast = 1,
- .multicast = 1,
- .unicast = 1,
- } };
-
- mc_filter[1] = mc_filter[0] = 0;
-
- if (dev->flags & IFF_PROMISC) {
- filter.bits.error = 1;
- filter.bits.promiscuous = 1;
- } else if (!(dev->flags & IFF_ALLMULTI)) {
- mc_filter[1] = mc_filter[0] = 0;
- netdev_for_each_mc_addr(ha, dev) {
- bit_nr = ~crc32_le(~0, ha->addr, ETH_ALEN) & 0x3f;
- mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 0x1f);
- }
- }
-
- writel(mc_filter[0], gmac->ctl_iomem + GMAC_MCAST_FIL0);
- writel(mc_filter[1], gmac->ctl_iomem + GMAC_MCAST_FIL1);
- writel(filter.bits32, gmac->ctl_iomem + GMAC_RX_FLTR);
-}
-
-static void __gmac_set_mac_address(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- __le32 addr[3];
-
- memset(addr, 0, sizeof(addr));
- memcpy(addr, dev->dev_addr, ETH_ALEN);
-
- writel(le32_to_cpu(addr[0]), gmac->ctl_iomem + GMAC_STA_ADD0);
- writel(le32_to_cpu(addr[1]), gmac->ctl_iomem + GMAC_STA_ADD1);
- writel(le32_to_cpu(addr[2]), gmac->ctl_iomem + GMAC_STA_ADD2);
-}
-
-static int gmac_set_mac_address(struct net_device *dev, void *addr)
-{
- struct sockaddr *sa = addr;
-
- memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN);
- __gmac_set_mac_address(dev);
-
- return 0;
-}
-
-static void gmac_clear_hw_stats(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
-
- readl(gmac->ctl_iomem + GMAC_IN_DISCARDS);
- readl(gmac->ctl_iomem + GMAC_IN_ERRORS);
- readl(gmac->ctl_iomem + GMAC_IN_MCAST);
- readl(gmac->ctl_iomem + GMAC_IN_BCAST);
- readl(gmac->ctl_iomem + GMAC_IN_MAC1);
- readl(gmac->ctl_iomem + GMAC_IN_MAC2);
-}
-
-static struct rtnl_link_stats64 *gmac_get_stats64(struct net_device *dev,
- struct rtnl_link_stats64 *storage)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- unsigned int start;
-
- gmac_update_hw_stats(dev);
-
- /* racing with RX NAPI */
- do {
- start = u64_stats_fetch_begin(&gmac->rx_stats_syncp);
-
- storage->rx_packets = gmac->stats.rx_packets;
- storage->rx_bytes = gmac->stats.rx_bytes;
- storage->rx_errors = gmac->stats.rx_errors;
- storage->rx_dropped = gmac->stats.rx_dropped;
-
- storage->rx_length_errors = gmac->stats.rx_length_errors;
- storage->rx_over_errors = gmac->stats.rx_over_errors;
- storage->rx_crc_errors = gmac->stats.rx_crc_errors;
- storage->rx_frame_errors = gmac->stats.rx_frame_errors;
-
- } while (u64_stats_fetch_retry(&gmac->rx_stats_syncp, start));
-
- /* racing with MIB and TX completion interrupts */
- do {
- start = u64_stats_fetch_begin(&gmac->ir_stats_syncp);
-
- storage->tx_errors = gmac->stats.tx_errors;
- storage->tx_packets = gmac->stats.tx_packets;
- storage->tx_bytes = gmac->stats.tx_bytes;
-
- storage->multicast = gmac->stats.multicast;
- storage->rx_missed_errors = gmac->stats.rx_missed_errors;
- storage->rx_fifo_errors = gmac->stats.rx_fifo_errors;
-
- } while (u64_stats_fetch_retry(&gmac->ir_stats_syncp, start));
-
- /* racing with hard_start_xmit */
- do {
- start = u64_stats_fetch_begin(&gmac->tx_stats_syncp);
-
- storage->tx_dropped = gmac->stats.tx_dropped;
-
- } while (u64_stats_fetch_retry(&gmac->tx_stats_syncp, start));
-
- storage->rx_dropped += storage->rx_missed_errors;
-
- return storage;
-}
-
-static int gmac_change_mtu(struct net_device *dev, int new_mtu)
-{
- int max_len = gmac_pick_rx_max_len(new_mtu);
-
- if (max_len < 0)
- return -EINVAL;
-
- gmac_disable_tx_rx(dev);
-
- dev->mtu = new_mtu;
- gmac_update_config0_reg(dev,
- max_len << CONFIG0_MAXLEN_SHIFT,
- CONFIG0_MAXLEN_MASK);
-
- netdev_update_features(dev);
-
- gmac_enable_tx_rx(dev);
-
- return 0;
-}
-
-static netdev_features_t gmac_fix_features(struct net_device *dev, netdev_features_t features)
-{
- if (dev->mtu + ETH_HLEN + VLAN_HLEN > MTU_SIZE_BIT_MASK)
- features &= ~GMAC_OFFLOAD_FEATURES;
-
- return features;
-}
-
-static int gmac_set_features(struct net_device *dev, netdev_features_t features)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- int enable = features & NETIF_F_RXCSUM;
- unsigned long flags;
- u32 reg;
-
- spin_lock_irqsave(&gmac->config_lock, flags);
-
- reg = readl(gmac->ctl_iomem + GMAC_CONFIG0);
- reg = enable ? reg | CONFIG0_RX_CHKSUM : reg & ~CONFIG0_RX_CHKSUM;
- writel(reg, gmac->ctl_iomem + GMAC_CONFIG0);
-
- spin_unlock_irqrestore(&gmac->config_lock, flags);
- return 0;
-}
-
-static int gmac_get_sset_count(struct net_device *dev, int sset)
-{
- return sset == ETH_SS_STATS ? GMAC_STATS_NUM : 0;
-}
-
-static void gmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
-{
- if (stringset != ETH_SS_STATS)
- return;
-
- memcpy(data, gmac_stats_strings, sizeof(gmac_stats_strings));
-}
-
-static void gmac_get_ethtool_stats(struct net_device *dev,
- struct ethtool_stats *estats, u64 *values)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- unsigned int start;
- u64 *p;
- int i;
-
- gmac_update_hw_stats(dev);
-
- /* racing with MIB interrupt */
- do {
- p = values;
- start = u64_stats_fetch_begin(&gmac->ir_stats_syncp);
-
- for (i = 0; i < RX_STATS_NUM; ++i)
- *p++ = gmac->hw_stats[i];
-
- } while (u64_stats_fetch_retry(&gmac->ir_stats_syncp, start));
- values = p;
-
- /* racing with RX NAPI */
- do {
- p = values;
- start = u64_stats_fetch_begin(&gmac->rx_stats_syncp);
-
- for (i = 0; i < RX_STATUS_NUM; ++i)
- *p++ = gmac->rx_stats[i];
- for (i = 0; i < RX_CHKSUM_NUM; ++i)
- *p++ = gmac->rx_csum_stats[i];
- *p++ = gmac->rx_napi_exits;
-
- } while (u64_stats_fetch_retry(&gmac->rx_stats_syncp, start));
- values = p;
-
- /* racing with TX start_xmit */
- do {
- p = values;
- start = u64_stats_fetch_begin(&gmac->tx_stats_syncp);
-
- for (i = 0; i < TX_MAX_FRAGS; ++i) {
- *values++ = gmac->tx_frag_stats[i];
- gmac->tx_frag_stats[i] = 0;
- }
- *values++ = gmac->tx_frags_linearized;
- *values++ = gmac->tx_hw_csummed;
-
- } while (u64_stats_fetch_retry(&gmac->tx_stats_syncp, start));
-}
-
-static int gmac_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- if (!dev->phydev)
- return -ENXIO;
- return phy_ethtool_gset(dev->phydev, cmd);
-}
-
-static int gmac_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- if (!dev->phydev)
- return -ENXIO;
- return phy_ethtool_sset(dev->phydev, cmd);
-}
-
-static int gmac_nway_reset(struct net_device *dev)
-{
- if (!dev->phydev)
- return -ENXIO;
- return phy_start_aneg(dev->phydev);
-}
-
-static void gmac_get_pauseparam(struct net_device *dev,
- struct ethtool_pauseparam *pparam)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- GMAC_CONFIG0_T config0;
-
- config0.bits32 = readl(gmac->ctl_iomem + GMAC_CONFIG0);
-
- pparam->rx_pause = config0.bits.rx_fc_en;
- pparam->tx_pause = config0.bits.tx_fc_en;
- pparam->autoneg = true;
-}
-
-static void gmac_get_ringparam(struct net_device *dev,
- struct ethtool_ringparam *rp)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- GMAC_CONFIG0_T config0;
-
- config0.bits32 = readl(gmac->ctl_iomem + GMAC_CONFIG0);
-
- rp->rx_max_pending = 1 << 15;
- rp->rx_mini_max_pending = 0;
- rp->rx_jumbo_max_pending = 0;
- rp->tx_max_pending = 1 << 15;
-
- rp->rx_pending = 1 << gmac->rxq_order;
- rp->rx_mini_pending = 0;
- rp->rx_jumbo_pending = 0;
- rp->tx_pending = 1 << gmac->txq_order;
-}
-
-static int toe_resize_freeq(struct toe_private *toe, int changing_dev_id);
-
-static int gmac_set_ringparam(struct net_device *dev,
- struct ethtool_ringparam *rp)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- struct toe_private *toe = gmac->toe;
- int err = 0;
-
- if (netif_running(dev))
- return -EBUSY;
-
- if (rp->rx_pending) {
- gmac->rxq_order = min(15, ilog2(rp->rx_pending - 1) + 1);
- err = toe_resize_freeq(toe, dev->dev_id);
- }
-
- if (rp->tx_pending)
- {
- gmac->txq_order = min(15, ilog2(rp->tx_pending - 1) + 1);
- gmac->irq_every_tx_packets = 1 << (gmac->txq_order - 2);
- }
-
- return err;
-}
-
-static int gmac_get_coalesce(struct net_device *dev,
- struct ethtool_coalesce *ecmd)
-{
- struct gmac_private *gmac = netdev_priv(dev);
-
- ecmd->rx_max_coalesced_frames = 1;
- ecmd->tx_max_coalesced_frames = gmac->irq_every_tx_packets;
- ecmd->rx_coalesce_usecs = gmac->rx_coalesce_nsecs/1000;
-
- return 0;
-}
-
-static int gmac_set_coalesce(struct net_device *dev,
- struct ethtool_coalesce *ecmd)
-{
- struct gmac_private *gmac = netdev_priv(dev);
-
- if (ecmd->tx_max_coalesced_frames < 1)
- return -EINVAL;
- if (ecmd->tx_max_coalesced_frames >= 1 << gmac->txq_order)
- return -EINVAL;
-
- gmac->irq_every_tx_packets = ecmd->tx_max_coalesced_frames;
- gmac->rx_coalesce_nsecs = ecmd->rx_coalesce_usecs * 1000;
-
- return 0;
-}
-
-static u32 gmac_get_msglevel(struct net_device *dev)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- return gmac->msg_enable;
-}
-
-static void gmac_set_msglevel(struct net_device *dev, u32 level)
-{
- struct gmac_private *gmac = netdev_priv(dev);
- gmac->msg_enable = level;
-}
-
-static void gmac_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- strcpy(info->driver, DRV_NAME);
- strcpy(info->version, DRV_VERSION);
- strcpy(info->bus_info, dev->dev_id ? "1" : "0");
-}
-
-static const struct net_device_ops gmac_351x_ops = {
- .ndo_init = gmac_init,
- .ndo_uninit = gmac_uninit,
- .ndo_open = gmac_open,
- .ndo_stop = gmac_stop,
- .ndo_start_xmit = gmac_start_xmit,
- .ndo_tx_timeout = gmac_tx_timeout,
- .ndo_set_rx_mode = gmac_set_rx_mode,
- .ndo_set_mac_address = gmac_set_mac_address,
- .ndo_get_stats64 = gmac_get_stats64,
- .ndo_change_mtu = gmac_change_mtu,
- .ndo_fix_features = gmac_fix_features,
- .ndo_set_features = gmac_set_features,
-};
-
-static const struct ethtool_ops gmac_351x_ethtool_ops = {
- .get_sset_count = gmac_get_sset_count,
- .get_strings = gmac_get_strings,
- .get_ethtool_stats = gmac_get_ethtool_stats,
- .get_settings = gmac_get_settings,
- .set_settings = gmac_set_settings,
- .get_link = ethtool_op_get_link,
- .nway_reset = gmac_nway_reset,
- .get_pauseparam = gmac_get_pauseparam,
- .get_ringparam = gmac_get_ringparam,
- .set_ringparam = gmac_set_ringparam,
- .get_coalesce = gmac_get_coalesce,
- .set_coalesce = gmac_set_coalesce,
- .get_msglevel = gmac_get_msglevel,
- .set_msglevel = gmac_set_msglevel,
- .get_drvinfo = gmac_get_drvinfo,
-};
-
-static int gmac_init_netdev(struct toe_private *toe, int num,
- struct platform_device *pdev)
-{
- struct gemini_gmac_platform_data *pdata = pdev->dev.platform_data;
- struct gmac_private *gmac;
- struct net_device *dev;
- int irq, err;
-
- if (!pdata->bus_id[num])
- return 0;
-
- irq = platform_get_irq(pdev, num);
- if (irq < 0) {
- dev_err(toe->dev, "No IRQ for ethernet device #%d\n", num);
- return irq;
- }
-
- dev = alloc_etherdev_mq(sizeof(*gmac), TX_QUEUE_NUM);
- if (!dev) {
- dev_err(toe->dev, "Can't allocate ethernet device #%d\n", num);
- return -ENOMEM;
- }
-
- gmac = netdev_priv(dev);
- gmac->num = num;
- gmac->toe = toe;
- SET_NETDEV_DEV(dev, toe->dev);
-
- toe->netdev[num] = dev;
- dev->dev_id = num;
-
- gmac->ctl_iomem = toe->iomem + TOE_GMAC_BASE(num);
- gmac->dma_iomem = toe->iomem + TOE_GMAC_DMA_BASE(num);
- dev->irq = irq;
-
- dev->netdev_ops = &gmac_351x_ops;
- dev->ethtool_ops = &gmac_351x_ethtool_ops;
-
- spin_lock_init(&gmac->config_lock);
- gmac_clear_hw_stats(dev);
-
- dev->hw_features = GMAC_OFFLOAD_FEATURES;
- dev->features |= GMAC_OFFLOAD_FEATURES | NETIF_F_GRO;
-
- gmac->freeq_refill = 0;
- netif_napi_add(dev, &gmac->napi, gmac_napi_poll, DEFAULT_NAPI_WEIGHT);
-
- if (is_valid_ether_addr((void *)toe->mac_addr[num]))
- memcpy(dev->dev_addr, toe->mac_addr[num], ETH_ALEN);
- else
- random_ether_addr(dev->dev_addr);
- __gmac_set_mac_address(dev);
-
- err = gmac_setup_phy(dev);
- if (err)
- netif_warn(gmac, probe, dev,
- "PHY init failed: %d, deferring to ifup time\n", err);
-
- err = register_netdev(dev);
- if (!err)
- {
- pr_info(DRV_NAME " %s: irq %d, dma base 0x%p, io base 0x%p\n",
- dev->name, irq, gmac->dma_iomem, gmac->ctl_iomem);
- return 0;
- }
-
- toe->netdev[num] = NULL;
- free_netdev(dev);
- return err;
-}
-
-static irqreturn_t toe_irq_thread(int irq, void *data)
-{
- struct toe_private *toe = data;
- void __iomem *irqen_reg = toe->iomem + GLOBAL_INTERRUPT_ENABLE_4_REG;
- void __iomem *irqif_reg = toe->iomem + GLOBAL_INTERRUPT_STATUS_4_REG;
- unsigned long irqmask = SWFQ_EMPTY_INT_BIT;
- unsigned long flags;
-
- toe_fill_freeq(toe, 0);
-
- /* Ack and enable interrupt */
- spin_lock_irqsave(&toe->irq_lock, flags);
- writel(irqmask, irqif_reg);
- irqmask |= readl(irqen_reg);
- writel(irqmask, irqen_reg);
- spin_unlock_irqrestore(&toe->irq_lock, flags);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t toe_irq(int irq, void *data)
-{
- struct toe_private *toe = data;
- void __iomem *irqif_reg = toe->iomem + GLOBAL_INTERRUPT_STATUS_4_REG;
- void __iomem *irqen_reg = toe->iomem + GLOBAL_INTERRUPT_ENABLE_4_REG;
- unsigned long val, en;
- irqreturn_t ret = IRQ_NONE;
-
- spin_lock(&toe->irq_lock);
-
- val = readl(irqif_reg);
- en = readl(irqen_reg);
-
- if (val & en & SWFQ_EMPTY_INT_BIT) {
- en &= ~(SWFQ_EMPTY_INT_BIT | GMAC0_RX_OVERRUN_INT_BIT
- | GMAC1_RX_OVERRUN_INT_BIT);
- writel(en, irqen_reg);
- ret = IRQ_WAKE_THREAD;
- }
-
- spin_unlock(&toe->irq_lock);
- return ret;
-}
-
-static int toe_init(struct toe_private *toe,
- struct platform_device *pdev)
-{
- int err;
-
- writel(0, toe->iomem + GLOBAL_SW_FREEQ_BASE_SIZE_REG);
- writel(0, toe->iomem + GLOBAL_HW_FREEQ_BASE_SIZE_REG);
- writel(0, toe->iomem + GLOBAL_SWFQ_RWPTR_REG);
- writel(0, toe->iomem + GLOBAL_HWFQ_RWPTR_REG);
-
- toe->freeq_frag_order = DEFAULT_RX_BUF_ORDER;
- toe->freeq_order = ~0;
-
- err = request_threaded_irq(toe->irq, toe_irq,
- toe_irq_thread, IRQF_SHARED, DRV_NAME " toe", toe);
- if (err)
- goto err_freeq;
-
- return 0;
-
-err_freeq:
- toe_cleanup_freeq(toe);
- return err;
-}
-
-static void toe_deinit(struct toe_private *toe)
-{
- free_irq(toe->irq, toe);
- toe_cleanup_freeq(toe);
-}
-
-static int toe_reset(struct toe_private *toe)
-{
- unsigned int reg = 0, retry = 5;
-
- reg = readl((void __iomem*)(IO_ADDRESS(GEMINI_GLOBAL_BASE) +
- GLOBAL_RESET));
- reg |= RESET_GMAC1 | RESET_GMAC0;
- writel(reg, (void __iomem*)(IO_ADDRESS(GEMINI_GLOBAL_BASE) +
- GLOBAL_RESET));
-
- do {
- udelay(2);
- reg = readl((void __iomem*)(toe->iomem +
- GLOBAL_TOE_VERSION_REG));
- barrier();
- } while (!reg && --retry);
-
- return reg ? 0 : -EIO;
-}
-
-/*
- * Interrupt config:
- *
- * GMAC0 intr bits ------> int0 ----> eth0
- * GMAC1 intr bits ------> int1 ----> eth1
- * TOE intr -------------> int1 ----> eth1
- * Classification Intr --> int0 ----> eth0
- * Default Q0 -----------> int0 ----> eth0
- * Default Q1 -----------> int1 ----> eth1
- * FreeQ intr -----------> int1 ----> eth1
- */
-static void toe_init_irq(struct toe_private *toe)
-{
- writel(0, toe->iomem + GLOBAL_INTERRUPT_ENABLE_0_REG);
- writel(0, toe->iomem + GLOBAL_INTERRUPT_ENABLE_1_REG);
- writel(0, toe->iomem + GLOBAL_INTERRUPT_ENABLE_2_REG);
- writel(0, toe->iomem + GLOBAL_INTERRUPT_ENABLE_3_REG);
- writel(0, toe->iomem + GLOBAL_INTERRUPT_ENABLE_4_REG);
-
- writel(0xCCFC0FC0, toe->iomem + GLOBAL_INTERRUPT_SELECT_0_REG);
- writel(0x00F00002, toe->iomem + GLOBAL_INTERRUPT_SELECT_1_REG);
- writel(0xFFFFFFFF, toe->iomem + GLOBAL_INTERRUPT_SELECT_2_REG);
- writel(0xFFFFFFFF, toe->iomem + GLOBAL_INTERRUPT_SELECT_3_REG);
- writel(0xFF000003, toe->iomem + GLOBAL_INTERRUPT_SELECT_4_REG);
-
- /* edge-triggered interrupts packed to level-triggered one... */
- writel(~0, toe->iomem + GLOBAL_INTERRUPT_STATUS_0_REG);
- writel(~0, toe->iomem + GLOBAL_INTERRUPT_STATUS_1_REG);
- writel(~0, toe->iomem + GLOBAL_INTERRUPT_STATUS_2_REG);
- writel(~0, toe->iomem + GLOBAL_INTERRUPT_STATUS_3_REG);
- writel(~0, toe->iomem + GLOBAL_INTERRUPT_STATUS_4_REG);
-}
-
-static void toe_save_mac_addr(struct toe_private *toe,
- struct platform_device *pdev)
-{
- struct gemini_gmac_platform_data *pdata = pdev->dev.platform_data;
- void __iomem *ctl;
- int i;
-
- for (i = 0; i < 2; i++) {
- if (pdata->bus_id[i]) {
- ctl = toe->iomem + TOE_GMAC_BASE(i);
- toe->mac_addr[i][0] = cpu_to_le32(readl(ctl + GMAC_STA_ADD0));
- toe->mac_addr[i][1] = cpu_to_le32(readl(ctl + GMAC_STA_ADD1));
- toe->mac_addr[i][2] = cpu_to_le32(readl(ctl + GMAC_STA_ADD2));
- }
- }
-}
-
-static int gemini_gmac_probe(struct platform_device *pdev)
-{
- struct resource *res;
- struct toe_private *toe;
- int irq, retval;
-
- if (!pdev->dev.platform_data)
- return -EINVAL;
-
- irq = platform_get_irq(pdev, 1);
- if (irq < 0)
- return irq;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "can't get device resources\n");
- return -ENODEV;
- }
-
- toe = kzalloc(sizeof(*toe), GFP_KERNEL);
- if (!toe)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, toe);
- toe->dev = &pdev->dev;
- toe->irq = irq;
-
- toe->iomem = ioremap(res->start, resource_size(res));
- if (!toe->iomem) {
- dev_err(toe->dev, "ioremap failed\n");
- retval = -EIO;
- goto err_data;
- }
-
- toe_save_mac_addr(toe, pdev);
-
- retval = toe_reset(toe);
- if (retval < 0)
- goto err_unmap;
-
- pr_info(DRV_NAME " toe: irq %d, io base 0x%08x, version %d\n",
- irq, res->start, retval);
-
- spin_lock_init(&toe->irq_lock);
- spin_lock_init(&toe->freeq_lock);
-
- toe_init_irq(toe);
-
- retval = toe_init(toe, pdev);
- if (retval)
- goto err_unmap;
-
- retval = gmac_init_netdev(toe, 0, pdev);
- if (retval)
- goto err_uninit;
-
- retval = gmac_init_netdev(toe, 1, pdev);
- if (retval)
- goto err_uninit;
-
- return 0;
-
-err_uninit:
- if (toe->netdev[0])
- unregister_netdev(toe->netdev[0]);
- toe_deinit(toe);
-err_unmap:
- iounmap(toe->iomem);
-err_data:
- kfree(toe);
- return retval;
-}
-
-static int gemini_gmac_remove(struct platform_device *pdev)
-{
- struct toe_private *toe = platform_get_drvdata(pdev);
- int i;
-
- for (i = 0; i < 2; i++)
- if (toe->netdev[i])
- unregister_netdev(toe->netdev[i]);
-
- toe_init_irq(toe);
- toe_deinit(toe);
-
- iounmap(toe->iomem);
- kfree(toe);
-
- return 0;
-}
-
-static struct platform_driver gemini_gmac_driver = {
- .probe = gemini_gmac_probe,
- .remove = gemini_gmac_remove,
- .driver.name = DRV_NAME,
- .driver.owner = THIS_MODULE,
-};
-
-static int __init gemini_gmac_init(void)
-{
-#ifdef CONFIG_MDIO_GPIO_MODULE
- request_module("mdio-gpio");
-#endif
- return platform_driver_register(&gemini_gmac_driver);
-}
-
-static void __exit gemini_gmac_exit(void)
-{
- platform_driver_unregister(&gemini_gmac_driver);
-}
-
-module_init(gemini_gmac_init);
-module_exit(gemini_gmac_exit);
projects / openwrt / staging / yousong.git / blobdiff