1b9b17debSTimur Tabi /* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved. 2b9b17debSTimur Tabi * 3b9b17debSTimur Tabi * This program is free software; you can redistribute it and/or modify 4b9b17debSTimur Tabi * it under the terms of the GNU General Public License version 2 and 5b9b17debSTimur Tabi * only version 2 as published by the Free Software Foundation. 6b9b17debSTimur Tabi * 7b9b17debSTimur Tabi * This program is distributed in the hope that it will be useful, 8b9b17debSTimur Tabi * but WITHOUT ANY WARRANTY; without even the implied warranty of 9b9b17debSTimur Tabi * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 10b9b17debSTimur Tabi * GNU General Public License for more details. 11b9b17debSTimur Tabi */ 12b9b17debSTimur Tabi 13b9b17debSTimur Tabi /* Qualcomm Technologies, Inc. EMAC Gigabit Ethernet Driver */ 14b9b17debSTimur Tabi 15b9b17debSTimur Tabi #include <linux/if_ether.h> 16b9b17debSTimur Tabi #include <linux/if_vlan.h> 17b9b17debSTimur Tabi #include <linux/interrupt.h> 18b9b17debSTimur Tabi #include <linux/io.h> 19b9b17debSTimur Tabi #include <linux/module.h> 20b9b17debSTimur Tabi #include <linux/of.h> 21b9b17debSTimur Tabi #include <linux/of_net.h> 22b9b17debSTimur Tabi #include <linux/of_device.h> 23b9b17debSTimur Tabi #include <linux/phy.h> 24b9b17debSTimur Tabi #include <linux/platform_device.h> 255f3d3807STimur Tabi #include <linux/acpi.h> 26b9b17debSTimur Tabi #include "emac.h" 27b9b17debSTimur Tabi #include "emac-mac.h" 28b9b17debSTimur Tabi #include "emac-phy.h" 29b9b17debSTimur Tabi #include "emac-sgmii.h" 30b9b17debSTimur Tabi 31b9b17debSTimur Tabi #define EMAC_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \ 32b9b17debSTimur Tabi NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP) 33b9b17debSTimur Tabi 34b9b17debSTimur Tabi #define EMAC_RRD_SIZE 4 35b9b17debSTimur Tabi /* The RRD size if timestamping is enabled: */ 36b9b17debSTimur Tabi #define EMAC_TS_RRD_SIZE 6 37b9b17debSTimur Tabi #define EMAC_TPD_SIZE 4 38b9b17debSTimur Tabi #define EMAC_RFD_SIZE 2 39b9b17debSTimur Tabi 40b9b17debSTimur Tabi #define REG_MAC_RX_STATUS_BIN EMAC_RXMAC_STATC_REG0 41b9b17debSTimur Tabi #define REG_MAC_RX_STATUS_END EMAC_RXMAC_STATC_REG22 42b9b17debSTimur Tabi #define REG_MAC_TX_STATUS_BIN EMAC_TXMAC_STATC_REG0 43b9b17debSTimur Tabi #define REG_MAC_TX_STATUS_END EMAC_TXMAC_STATC_REG24 44b9b17debSTimur Tabi 45b9b17debSTimur Tabi #define RXQ0_NUM_RFD_PREF_DEF 8 46b9b17debSTimur Tabi #define TXQ0_NUM_TPD_PREF_DEF 5 47b9b17debSTimur Tabi 48b9b17debSTimur Tabi #define EMAC_PREAMBLE_DEF 7 49b9b17debSTimur Tabi 50b9b17debSTimur Tabi #define DMAR_DLY_CNT_DEF 15 51b9b17debSTimur Tabi #define DMAW_DLY_CNT_DEF 4 52b9b17debSTimur Tabi 53b9b17debSTimur Tabi #define IMR_NORMAL_MASK (\ 54b9b17debSTimur Tabi ISR_ERROR |\ 55b9b17debSTimur Tabi ISR_GPHY_LINK |\ 56b9b17debSTimur Tabi ISR_TX_PKT |\ 57b9b17debSTimur Tabi GPHY_WAKEUP_INT) 58b9b17debSTimur Tabi 59b9b17debSTimur Tabi #define IMR_EXTENDED_MASK (\ 60b9b17debSTimur Tabi SW_MAN_INT |\ 61b9b17debSTimur Tabi ISR_OVER |\ 62b9b17debSTimur Tabi ISR_ERROR |\ 63b9b17debSTimur Tabi ISR_GPHY_LINK |\ 64b9b17debSTimur Tabi ISR_TX_PKT |\ 65b9b17debSTimur Tabi GPHY_WAKEUP_INT) 66b9b17debSTimur Tabi 67b9b17debSTimur Tabi #define ISR_TX_PKT (\ 68b9b17debSTimur Tabi TX_PKT_INT |\ 69b9b17debSTimur Tabi TX_PKT_INT1 |\ 70b9b17debSTimur Tabi TX_PKT_INT2 |\ 71b9b17debSTimur Tabi TX_PKT_INT3) 72b9b17debSTimur Tabi 73b9b17debSTimur Tabi #define ISR_GPHY_LINK (\ 74b9b17debSTimur Tabi GPHY_LINK_UP_INT |\ 75b9b17debSTimur Tabi GPHY_LINK_DOWN_INT) 76b9b17debSTimur Tabi 77b9b17debSTimur Tabi #define ISR_OVER (\ 78b9b17debSTimur Tabi RFD0_UR_INT |\ 79b9b17debSTimur Tabi RFD1_UR_INT |\ 80b9b17debSTimur Tabi RFD2_UR_INT |\ 81b9b17debSTimur Tabi RFD3_UR_INT |\ 82b9b17debSTimur Tabi RFD4_UR_INT |\ 83b9b17debSTimur Tabi RXF_OF_INT |\ 84b9b17debSTimur Tabi TXF_UR_INT) 85b9b17debSTimur Tabi 86b9b17debSTimur Tabi #define ISR_ERROR (\ 87b9b17debSTimur Tabi DMAR_TO_INT |\ 88b9b17debSTimur Tabi DMAW_TO_INT |\ 89b9b17debSTimur Tabi TXQ_TO_INT) 90b9b17debSTimur Tabi 91b9b17debSTimur Tabi /* in sync with enum emac_clk_id */ 92b9b17debSTimur Tabi static const char * const emac_clk_name[] = { 93b9b17debSTimur Tabi "axi_clk", "cfg_ahb_clk", "high_speed_clk", "mdio_clk", "tx_clk", 94b9b17debSTimur Tabi "rx_clk", "sys_clk" 95b9b17debSTimur Tabi }; 96b9b17debSTimur Tabi 97b9b17debSTimur Tabi void emac_reg_update32(void __iomem *addr, u32 mask, u32 val) 98b9b17debSTimur Tabi { 99b9b17debSTimur Tabi u32 data = readl(addr); 100b9b17debSTimur Tabi 101b9b17debSTimur Tabi writel(((data & ~mask) | val), addr); 102b9b17debSTimur Tabi } 103b9b17debSTimur Tabi 104b9b17debSTimur Tabi /* reinitialize */ 105b9b17debSTimur Tabi int emac_reinit_locked(struct emac_adapter *adpt) 106b9b17debSTimur Tabi { 107b9b17debSTimur Tabi int ret; 108b9b17debSTimur Tabi 109b9b17debSTimur Tabi mutex_lock(&adpt->reset_lock); 110b9b17debSTimur Tabi 111b9b17debSTimur Tabi emac_mac_down(adpt); 112b9b17debSTimur Tabi emac_sgmii_reset(adpt); 113b9b17debSTimur Tabi ret = emac_mac_up(adpt); 114b9b17debSTimur Tabi 115b9b17debSTimur Tabi mutex_unlock(&adpt->reset_lock); 116b9b17debSTimur Tabi 117b9b17debSTimur Tabi return ret; 118b9b17debSTimur Tabi } 119b9b17debSTimur Tabi 120b9b17debSTimur Tabi /* NAPI */ 121b9b17debSTimur Tabi static int emac_napi_rtx(struct napi_struct *napi, int budget) 122b9b17debSTimur Tabi { 123b9b17debSTimur Tabi struct emac_rx_queue *rx_q = 124b9b17debSTimur Tabi container_of(napi, struct emac_rx_queue, napi); 125b9b17debSTimur Tabi struct emac_adapter *adpt = netdev_priv(rx_q->netdev); 126b9b17debSTimur Tabi struct emac_irq *irq = rx_q->irq; 127b9b17debSTimur Tabi int work_done = 0; 128b9b17debSTimur Tabi 129b9b17debSTimur Tabi emac_mac_rx_process(adpt, rx_q, &work_done, budget); 130b9b17debSTimur Tabi 131b9b17debSTimur Tabi if (work_done < budget) { 132b9b17debSTimur Tabi napi_complete(napi); 133b9b17debSTimur Tabi 134b9b17debSTimur Tabi irq->mask |= rx_q->intr; 135b9b17debSTimur Tabi writel(irq->mask, adpt->base + EMAC_INT_MASK); 136b9b17debSTimur Tabi } 137b9b17debSTimur Tabi 138b9b17debSTimur Tabi return work_done; 139b9b17debSTimur Tabi } 140b9b17debSTimur Tabi 141b9b17debSTimur Tabi /* Transmit the packet */ 142b9b17debSTimur Tabi static int emac_start_xmit(struct sk_buff *skb, struct net_device *netdev) 143b9b17debSTimur Tabi { 144b9b17debSTimur Tabi struct emac_adapter *adpt = netdev_priv(netdev); 145b9b17debSTimur Tabi 146b9b17debSTimur Tabi return emac_mac_tx_buf_send(adpt, &adpt->tx_q, skb); 147b9b17debSTimur Tabi } 148b9b17debSTimur Tabi 149b9b17debSTimur Tabi irqreturn_t emac_isr(int _irq, void *data) 150b9b17debSTimur Tabi { 151b9b17debSTimur Tabi struct emac_irq *irq = data; 152b9b17debSTimur Tabi struct emac_adapter *adpt = 153b9b17debSTimur Tabi container_of(irq, struct emac_adapter, irq); 154b9b17debSTimur Tabi struct emac_rx_queue *rx_q = &adpt->rx_q; 155b9b17debSTimur Tabi u32 isr, status; 156b9b17debSTimur Tabi 157b9b17debSTimur Tabi /* disable the interrupt */ 158b9b17debSTimur Tabi writel(0, adpt->base + EMAC_INT_MASK); 159b9b17debSTimur Tabi 160b9b17debSTimur Tabi isr = readl_relaxed(adpt->base + EMAC_INT_STATUS); 161b9b17debSTimur Tabi 162b9b17debSTimur Tabi status = isr & irq->mask; 163b9b17debSTimur Tabi if (status == 0) 164b9b17debSTimur Tabi goto exit; 165b9b17debSTimur Tabi 166b9b17debSTimur Tabi if (status & ISR_ERROR) { 167b9b17debSTimur Tabi netif_warn(adpt, intr, adpt->netdev, 168b9b17debSTimur Tabi "warning: error irq status 0x%lx\n", 169b9b17debSTimur Tabi status & ISR_ERROR); 170b9b17debSTimur Tabi /* reset MAC */ 171b9b17debSTimur Tabi schedule_work(&adpt->work_thread); 172b9b17debSTimur Tabi } 173b9b17debSTimur Tabi 174b9b17debSTimur Tabi /* Schedule the napi for receive queue with interrupt 175b9b17debSTimur Tabi * status bit set 176b9b17debSTimur Tabi */ 177b9b17debSTimur Tabi if (status & rx_q->intr) { 178b9b17debSTimur Tabi if (napi_schedule_prep(&rx_q->napi)) { 179b9b17debSTimur Tabi irq->mask &= ~rx_q->intr; 180b9b17debSTimur Tabi __napi_schedule(&rx_q->napi); 181b9b17debSTimur Tabi } 182b9b17debSTimur Tabi } 183b9b17debSTimur Tabi 184b9b17debSTimur Tabi if (status & TX_PKT_INT) 185b9b17debSTimur Tabi emac_mac_tx_process(adpt, &adpt->tx_q); 186b9b17debSTimur Tabi 187b9b17debSTimur Tabi if (status & ISR_OVER) 188b9b17debSTimur Tabi net_warn_ratelimited("warning: TX/RX overflow\n"); 189b9b17debSTimur Tabi 190b9b17debSTimur Tabi /* link event */ 191b9b17debSTimur Tabi if (status & ISR_GPHY_LINK) 192b9b17debSTimur Tabi phy_mac_interrupt(adpt->phydev, !!(status & GPHY_LINK_UP_INT)); 193b9b17debSTimur Tabi 194b9b17debSTimur Tabi exit: 195b9b17debSTimur Tabi /* enable the interrupt */ 196b9b17debSTimur Tabi writel(irq->mask, adpt->base + EMAC_INT_MASK); 197b9b17debSTimur Tabi 198b9b17debSTimur Tabi return IRQ_HANDLED; 199b9b17debSTimur Tabi } 200b9b17debSTimur Tabi 201b9b17debSTimur Tabi /* Configure VLAN tag strip/insert feature */ 202b9b17debSTimur Tabi static int emac_set_features(struct net_device *netdev, 203b9b17debSTimur Tabi netdev_features_t features) 204b9b17debSTimur Tabi { 205b9b17debSTimur Tabi netdev_features_t changed = features ^ netdev->features; 206b9b17debSTimur Tabi struct emac_adapter *adpt = netdev_priv(netdev); 207b9b17debSTimur Tabi 208b9b17debSTimur Tabi /* We only need to reprogram the hardware if the VLAN tag features 209b9b17debSTimur Tabi * have changed, and if it's already running. 210b9b17debSTimur Tabi */ 211b9b17debSTimur Tabi if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX))) 212b9b17debSTimur Tabi return 0; 213b9b17debSTimur Tabi 214b9b17debSTimur Tabi if (!netif_running(netdev)) 215b9b17debSTimur Tabi return 0; 216b9b17debSTimur Tabi 217b9b17debSTimur Tabi /* emac_mac_mode_config() uses netdev->features to configure the EMAC, 218b9b17debSTimur Tabi * so make sure it's set first. 219b9b17debSTimur Tabi */ 220b9b17debSTimur Tabi netdev->features = features; 221b9b17debSTimur Tabi 222b9b17debSTimur Tabi return emac_reinit_locked(adpt); 223b9b17debSTimur Tabi } 224b9b17debSTimur Tabi 225b9b17debSTimur Tabi /* Configure Multicast and Promiscuous modes */ 226b9b17debSTimur Tabi static void emac_rx_mode_set(struct net_device *netdev) 227b9b17debSTimur Tabi { 228b9b17debSTimur Tabi struct emac_adapter *adpt = netdev_priv(netdev); 229b9b17debSTimur Tabi struct netdev_hw_addr *ha; 230b9b17debSTimur Tabi 231b9b17debSTimur Tabi emac_mac_mode_config(adpt); 232b9b17debSTimur Tabi 233b9b17debSTimur Tabi /* update multicast address filtering */ 234b9b17debSTimur Tabi emac_mac_multicast_addr_clear(adpt); 235b9b17debSTimur Tabi netdev_for_each_mc_addr(ha, netdev) 236b9b17debSTimur Tabi emac_mac_multicast_addr_set(adpt, ha->addr); 237b9b17debSTimur Tabi } 238b9b17debSTimur Tabi 239b9b17debSTimur Tabi /* Change the Maximum Transfer Unit (MTU) */ 240b9b17debSTimur Tabi static int emac_change_mtu(struct net_device *netdev, int new_mtu) 241b9b17debSTimur Tabi { 242b9b17debSTimur Tabi struct emac_adapter *adpt = netdev_priv(netdev); 243b9b17debSTimur Tabi 244b9b17debSTimur Tabi netif_info(adpt, hw, adpt->netdev, 245b9b17debSTimur Tabi "changing MTU from %d to %d\n", netdev->mtu, 246b9b17debSTimur Tabi new_mtu); 247b9b17debSTimur Tabi netdev->mtu = new_mtu; 248b9b17debSTimur Tabi 249b9b17debSTimur Tabi if (netif_running(netdev)) 250b9b17debSTimur Tabi return emac_reinit_locked(adpt); 251b9b17debSTimur Tabi 252b9b17debSTimur Tabi return 0; 253b9b17debSTimur Tabi } 254b9b17debSTimur Tabi 255b9b17debSTimur Tabi /* Called when the network interface is made active */ 256b9b17debSTimur Tabi static int emac_open(struct net_device *netdev) 257b9b17debSTimur Tabi { 258b9b17debSTimur Tabi struct emac_adapter *adpt = netdev_priv(netdev); 259b9b17debSTimur Tabi int ret; 260b9b17debSTimur Tabi 261b9b17debSTimur Tabi /* allocate rx/tx dma buffer & descriptors */ 262b9b17debSTimur Tabi ret = emac_mac_rx_tx_rings_alloc_all(adpt); 263b9b17debSTimur Tabi if (ret) { 264b9b17debSTimur Tabi netdev_err(adpt->netdev, "error allocating rx/tx rings\n"); 265b9b17debSTimur Tabi return ret; 266b9b17debSTimur Tabi } 267b9b17debSTimur Tabi 268b9b17debSTimur Tabi ret = emac_mac_up(adpt); 269b9b17debSTimur Tabi if (ret) { 270b9b17debSTimur Tabi emac_mac_rx_tx_rings_free_all(adpt); 271b9b17debSTimur Tabi return ret; 272b9b17debSTimur Tabi } 273b9b17debSTimur Tabi 274b9b17debSTimur Tabi emac_mac_start(adpt); 275b9b17debSTimur Tabi 276b9b17debSTimur Tabi return 0; 277b9b17debSTimur Tabi } 278b9b17debSTimur Tabi 279b9b17debSTimur Tabi /* Called when the network interface is disabled */ 280b9b17debSTimur Tabi static int emac_close(struct net_device *netdev) 281b9b17debSTimur Tabi { 282b9b17debSTimur Tabi struct emac_adapter *adpt = netdev_priv(netdev); 283b9b17debSTimur Tabi 284b9b17debSTimur Tabi mutex_lock(&adpt->reset_lock); 285b9b17debSTimur Tabi 286b9b17debSTimur Tabi emac_mac_down(adpt); 287b9b17debSTimur Tabi emac_mac_rx_tx_rings_free_all(adpt); 288b9b17debSTimur Tabi 289b9b17debSTimur Tabi mutex_unlock(&adpt->reset_lock); 290b9b17debSTimur Tabi 291b9b17debSTimur Tabi return 0; 292b9b17debSTimur Tabi } 293b9b17debSTimur Tabi 294b9b17debSTimur Tabi /* Respond to a TX hang */ 295b9b17debSTimur Tabi static void emac_tx_timeout(struct net_device *netdev) 296b9b17debSTimur Tabi { 297b9b17debSTimur Tabi struct emac_adapter *adpt = netdev_priv(netdev); 298b9b17debSTimur Tabi 299b9b17debSTimur Tabi schedule_work(&adpt->work_thread); 300b9b17debSTimur Tabi } 301b9b17debSTimur Tabi 302b9b17debSTimur Tabi /* IOCTL support for the interface */ 303b9b17debSTimur Tabi static int emac_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) 304b9b17debSTimur Tabi { 305b9b17debSTimur Tabi if (!netif_running(netdev)) 306b9b17debSTimur Tabi return -EINVAL; 307b9b17debSTimur Tabi 308b9b17debSTimur Tabi if (!netdev->phydev) 309b9b17debSTimur Tabi return -ENODEV; 310b9b17debSTimur Tabi 311b9b17debSTimur Tabi return phy_mii_ioctl(netdev->phydev, ifr, cmd); 312b9b17debSTimur Tabi } 313b9b17debSTimur Tabi 31479f664edSTimur Tabi /** 31579f664edSTimur Tabi * emac_update_hw_stats - read the EMAC stat registers 31679f664edSTimur Tabi * 31779f664edSTimur Tabi * Reads the stats registers and write the values to adpt->stats. 31879f664edSTimur Tabi * 31979f664edSTimur Tabi * adpt->stats.lock must be held while calling this function, 32079f664edSTimur Tabi * and while reading from adpt->stats. 32179f664edSTimur Tabi */ 32279f664edSTimur Tabi void emac_update_hw_stats(struct emac_adapter *adpt) 323b9b17debSTimur Tabi { 324b9b17debSTimur Tabi struct emac_stats *stats = &adpt->stats; 325b9b17debSTimur Tabi u64 *stats_itr = &adpt->stats.rx_ok; 32679f664edSTimur Tabi void __iomem *base = adpt->base; 32779f664edSTimur Tabi unsigned int addr; 328b9b17debSTimur Tabi 32979f664edSTimur Tabi addr = REG_MAC_RX_STATUS_BIN; 330b9b17debSTimur Tabi while (addr <= REG_MAC_RX_STATUS_END) { 33179f664edSTimur Tabi *stats_itr += readl_relaxed(base + addr); 332b9b17debSTimur Tabi stats_itr++; 333b9b17debSTimur Tabi addr += sizeof(u32); 334b9b17debSTimur Tabi } 335b9b17debSTimur Tabi 336b9b17debSTimur Tabi /* additional rx status */ 33779f664edSTimur Tabi stats->rx_crc_align += readl_relaxed(base + EMAC_RXMAC_STATC_REG23); 33879f664edSTimur Tabi stats->rx_jabbers += readl_relaxed(base + EMAC_RXMAC_STATC_REG24); 339b9b17debSTimur Tabi 340b9b17debSTimur Tabi /* update tx status */ 341b9b17debSTimur Tabi addr = REG_MAC_TX_STATUS_BIN; 34279f664edSTimur Tabi stats_itr = &stats->tx_ok; 343b9b17debSTimur Tabi 344b9b17debSTimur Tabi while (addr <= REG_MAC_TX_STATUS_END) { 34579f664edSTimur Tabi *stats_itr += readl_relaxed(base + addr); 34679f664edSTimur Tabi stats_itr++; 347b9b17debSTimur Tabi addr += sizeof(u32); 348b9b17debSTimur Tabi } 349b9b17debSTimur Tabi 350b9b17debSTimur Tabi /* additional tx status */ 35179f664edSTimur Tabi stats->tx_col += readl_relaxed(base + EMAC_TXMAC_STATC_REG25); 35279f664edSTimur Tabi } 35379f664edSTimur Tabi 35479f664edSTimur Tabi /* Provide network statistics info for the interface */ 35579f664edSTimur Tabi static void emac_get_stats64(struct net_device *netdev, 35679f664edSTimur Tabi struct rtnl_link_stats64 *net_stats) 35779f664edSTimur Tabi { 35879f664edSTimur Tabi struct emac_adapter *adpt = netdev_priv(netdev); 35979f664edSTimur Tabi struct emac_stats *stats = &adpt->stats; 36079f664edSTimur Tabi 36179f664edSTimur Tabi spin_lock(&stats->lock); 36279f664edSTimur Tabi 36379f664edSTimur Tabi emac_update_hw_stats(adpt); 364b9b17debSTimur Tabi 365b9b17debSTimur Tabi /* return parsed statistics */ 366b9b17debSTimur Tabi net_stats->rx_packets = stats->rx_ok; 367b9b17debSTimur Tabi net_stats->tx_packets = stats->tx_ok; 368b9b17debSTimur Tabi net_stats->rx_bytes = stats->rx_byte_cnt; 369b9b17debSTimur Tabi net_stats->tx_bytes = stats->tx_byte_cnt; 370b9b17debSTimur Tabi net_stats->multicast = stats->rx_mcast; 371b9b17debSTimur Tabi net_stats->collisions = stats->tx_1_col + stats->tx_2_col * 2 + 372b9b17debSTimur Tabi stats->tx_late_col + stats->tx_abort_col; 373b9b17debSTimur Tabi 374b9b17debSTimur Tabi net_stats->rx_errors = stats->rx_frag + stats->rx_fcs_err + 375b9b17debSTimur Tabi stats->rx_len_err + stats->rx_sz_ov + 376b9b17debSTimur Tabi stats->rx_align_err; 377b9b17debSTimur Tabi net_stats->rx_fifo_errors = stats->rx_rxf_ov; 378b9b17debSTimur Tabi net_stats->rx_length_errors = stats->rx_len_err; 379b9b17debSTimur Tabi net_stats->rx_crc_errors = stats->rx_fcs_err; 380b9b17debSTimur Tabi net_stats->rx_frame_errors = stats->rx_align_err; 381b9b17debSTimur Tabi net_stats->rx_over_errors = stats->rx_rxf_ov; 382b9b17debSTimur Tabi net_stats->rx_missed_errors = stats->rx_rxf_ov; 383b9b17debSTimur Tabi 384b9b17debSTimur Tabi net_stats->tx_errors = stats->tx_late_col + stats->tx_abort_col + 385b9b17debSTimur Tabi stats->tx_underrun + stats->tx_trunc; 386b9b17debSTimur Tabi net_stats->tx_fifo_errors = stats->tx_underrun; 387b9b17debSTimur Tabi net_stats->tx_aborted_errors = stats->tx_abort_col; 388b9b17debSTimur Tabi net_stats->tx_window_errors = stats->tx_late_col; 389b9b17debSTimur Tabi 390b9b17debSTimur Tabi spin_unlock(&stats->lock); 391b9b17debSTimur Tabi } 392b9b17debSTimur Tabi 393b9b17debSTimur Tabi static const struct net_device_ops emac_netdev_ops = { 394b9b17debSTimur Tabi .ndo_open = emac_open, 395b9b17debSTimur Tabi .ndo_stop = emac_close, 396b9b17debSTimur Tabi .ndo_validate_addr = eth_validate_addr, 397b9b17debSTimur Tabi .ndo_start_xmit = emac_start_xmit, 398b9b17debSTimur Tabi .ndo_set_mac_address = eth_mac_addr, 399b9b17debSTimur Tabi .ndo_change_mtu = emac_change_mtu, 400b9b17debSTimur Tabi .ndo_do_ioctl = emac_ioctl, 401b9b17debSTimur Tabi .ndo_tx_timeout = emac_tx_timeout, 402b9b17debSTimur Tabi .ndo_get_stats64 = emac_get_stats64, 403b9b17debSTimur Tabi .ndo_set_features = emac_set_features, 404b9b17debSTimur Tabi .ndo_set_rx_mode = emac_rx_mode_set, 405b9b17debSTimur Tabi }; 406b9b17debSTimur Tabi 407b9b17debSTimur Tabi /* Watchdog task routine, called to reinitialize the EMAC */ 408b9b17debSTimur Tabi static void emac_work_thread(struct work_struct *work) 409b9b17debSTimur Tabi { 410b9b17debSTimur Tabi struct emac_adapter *adpt = 411b9b17debSTimur Tabi container_of(work, struct emac_adapter, work_thread); 412b9b17debSTimur Tabi 413b9b17debSTimur Tabi emac_reinit_locked(adpt); 414b9b17debSTimur Tabi } 415b9b17debSTimur Tabi 416b9b17debSTimur Tabi /* Initialize various data structures */ 417b9b17debSTimur Tabi static void emac_init_adapter(struct emac_adapter *adpt) 418b9b17debSTimur Tabi { 419b9b17debSTimur Tabi u32 reg; 420b9b17debSTimur Tabi 421b9b17debSTimur Tabi /* descriptors */ 422b9b17debSTimur Tabi adpt->tx_desc_cnt = EMAC_DEF_TX_DESCS; 423b9b17debSTimur Tabi adpt->rx_desc_cnt = EMAC_DEF_RX_DESCS; 424b9b17debSTimur Tabi 425b9b17debSTimur Tabi /* dma */ 426b9b17debSTimur Tabi adpt->dma_order = emac_dma_ord_out; 427b9b17debSTimur Tabi adpt->dmar_block = emac_dma_req_4096; 428b9b17debSTimur Tabi adpt->dmaw_block = emac_dma_req_128; 429b9b17debSTimur Tabi adpt->dmar_dly_cnt = DMAR_DLY_CNT_DEF; 430b9b17debSTimur Tabi adpt->dmaw_dly_cnt = DMAW_DLY_CNT_DEF; 431b9b17debSTimur Tabi adpt->tpd_burst = TXQ0_NUM_TPD_PREF_DEF; 432b9b17debSTimur Tabi adpt->rfd_burst = RXQ0_NUM_RFD_PREF_DEF; 433b9b17debSTimur Tabi 434b9b17debSTimur Tabi /* irq moderator */ 435b9b17debSTimur Tabi reg = ((EMAC_DEF_RX_IRQ_MOD >> 1) << IRQ_MODERATOR2_INIT_SHFT) | 436b9b17debSTimur Tabi ((EMAC_DEF_TX_IRQ_MOD >> 1) << IRQ_MODERATOR_INIT_SHFT); 437b9b17debSTimur Tabi adpt->irq_mod = reg; 438b9b17debSTimur Tabi 439b9b17debSTimur Tabi /* others */ 440b9b17debSTimur Tabi adpt->preamble = EMAC_PREAMBLE_DEF; 441b9b17debSTimur Tabi } 442b9b17debSTimur Tabi 443b9b17debSTimur Tabi /* Get the clock */ 444b9b17debSTimur Tabi static int emac_clks_get(struct platform_device *pdev, 445b9b17debSTimur Tabi struct emac_adapter *adpt) 446b9b17debSTimur Tabi { 447b9b17debSTimur Tabi unsigned int i; 448b9b17debSTimur Tabi 449b9b17debSTimur Tabi for (i = 0; i < EMAC_CLK_CNT; i++) { 450b9b17debSTimur Tabi struct clk *clk = devm_clk_get(&pdev->dev, emac_clk_name[i]); 451b9b17debSTimur Tabi 452b9b17debSTimur Tabi if (IS_ERR(clk)) { 453b9b17debSTimur Tabi dev_err(&pdev->dev, 454b9b17debSTimur Tabi "could not claim clock %s (error=%li)\n", 455b9b17debSTimur Tabi emac_clk_name[i], PTR_ERR(clk)); 456b9b17debSTimur Tabi 457b9b17debSTimur Tabi return PTR_ERR(clk); 458b9b17debSTimur Tabi } 459b9b17debSTimur Tabi 460b9b17debSTimur Tabi adpt->clk[i] = clk; 461b9b17debSTimur Tabi } 462b9b17debSTimur Tabi 463b9b17debSTimur Tabi return 0; 464b9b17debSTimur Tabi } 465b9b17debSTimur Tabi 466b9b17debSTimur Tabi /* Initialize clocks */ 467b9b17debSTimur Tabi static int emac_clks_phase1_init(struct platform_device *pdev, 468b9b17debSTimur Tabi struct emac_adapter *adpt) 469b9b17debSTimur Tabi { 470b9b17debSTimur Tabi int ret; 471b9b17debSTimur Tabi 472026acd5fSTimur Tabi /* On ACPI platforms, clocks are controlled by firmware and/or 473026acd5fSTimur Tabi * ACPI, not by drivers. 474026acd5fSTimur Tabi */ 475026acd5fSTimur Tabi if (has_acpi_companion(&pdev->dev)) 476026acd5fSTimur Tabi return 0; 477026acd5fSTimur Tabi 478b9b17debSTimur Tabi ret = emac_clks_get(pdev, adpt); 479b9b17debSTimur Tabi if (ret) 480b9b17debSTimur Tabi return ret; 481b9b17debSTimur Tabi 482b9b17debSTimur Tabi ret = clk_prepare_enable(adpt->clk[EMAC_CLK_AXI]); 483b9b17debSTimur Tabi if (ret) 484b9b17debSTimur Tabi return ret; 485b9b17debSTimur Tabi 486b9b17debSTimur Tabi ret = clk_prepare_enable(adpt->clk[EMAC_CLK_CFG_AHB]); 487b9b17debSTimur Tabi if (ret) 488b9b17debSTimur Tabi return ret; 489b9b17debSTimur Tabi 490b9b17debSTimur Tabi ret = clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 19200000); 491b9b17debSTimur Tabi if (ret) 492b9b17debSTimur Tabi return ret; 493b9b17debSTimur Tabi 494b9b17debSTimur Tabi return clk_prepare_enable(adpt->clk[EMAC_CLK_HIGH_SPEED]); 495b9b17debSTimur Tabi } 496b9b17debSTimur Tabi 497b9b17debSTimur Tabi /* Enable clocks; needs emac_clks_phase1_init to be called before */ 498b9b17debSTimur Tabi static int emac_clks_phase2_init(struct platform_device *pdev, 499b9b17debSTimur Tabi struct emac_adapter *adpt) 500b9b17debSTimur Tabi { 501b9b17debSTimur Tabi int ret; 502b9b17debSTimur Tabi 503026acd5fSTimur Tabi if (has_acpi_companion(&pdev->dev)) 504026acd5fSTimur Tabi return 0; 505026acd5fSTimur Tabi 506b9b17debSTimur Tabi ret = clk_set_rate(adpt->clk[EMAC_CLK_TX], 125000000); 507b9b17debSTimur Tabi if (ret) 508b9b17debSTimur Tabi return ret; 509b9b17debSTimur Tabi 510b9b17debSTimur Tabi ret = clk_prepare_enable(adpt->clk[EMAC_CLK_TX]); 511b9b17debSTimur Tabi if (ret) 512b9b17debSTimur Tabi return ret; 513b9b17debSTimur Tabi 514b9b17debSTimur Tabi ret = clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 125000000); 515b9b17debSTimur Tabi if (ret) 516b9b17debSTimur Tabi return ret; 517b9b17debSTimur Tabi 518b9b17debSTimur Tabi ret = clk_set_rate(adpt->clk[EMAC_CLK_MDIO], 25000000); 519b9b17debSTimur Tabi if (ret) 520b9b17debSTimur Tabi return ret; 521b9b17debSTimur Tabi 522b9b17debSTimur Tabi ret = clk_prepare_enable(adpt->clk[EMAC_CLK_MDIO]); 523b9b17debSTimur Tabi if (ret) 524b9b17debSTimur Tabi return ret; 525b9b17debSTimur Tabi 526b9b17debSTimur Tabi ret = clk_prepare_enable(adpt->clk[EMAC_CLK_RX]); 527b9b17debSTimur Tabi if (ret) 528b9b17debSTimur Tabi return ret; 529b9b17debSTimur Tabi 530b9b17debSTimur Tabi return clk_prepare_enable(adpt->clk[EMAC_CLK_SYS]); 531b9b17debSTimur Tabi } 532b9b17debSTimur Tabi 533b9b17debSTimur Tabi static void emac_clks_teardown(struct emac_adapter *adpt) 534b9b17debSTimur Tabi { 535b9b17debSTimur Tabi 536b9b17debSTimur Tabi unsigned int i; 537b9b17debSTimur Tabi 538b9b17debSTimur Tabi for (i = 0; i < EMAC_CLK_CNT; i++) 539b9b17debSTimur Tabi clk_disable_unprepare(adpt->clk[i]); 540b9b17debSTimur Tabi } 541b9b17debSTimur Tabi 542b9b17debSTimur Tabi /* Get the resources */ 543b9b17debSTimur Tabi static int emac_probe_resources(struct platform_device *pdev, 544b9b17debSTimur Tabi struct emac_adapter *adpt) 545b9b17debSTimur Tabi { 546b9b17debSTimur Tabi struct net_device *netdev = adpt->netdev; 547b9b17debSTimur Tabi struct resource *res; 5480de709acSTimur Tabi char maddr[ETH_ALEN]; 549b9b17debSTimur Tabi int ret = 0; 550b9b17debSTimur Tabi 551b9b17debSTimur Tabi /* get mac address */ 5520de709acSTimur Tabi if (device_get_mac_address(&pdev->dev, maddr, ETH_ALEN)) 553b9b17debSTimur Tabi ether_addr_copy(netdev->dev_addr, maddr); 5540de709acSTimur Tabi else 5550de709acSTimur Tabi eth_hw_addr_random(netdev); 556b9b17debSTimur Tabi 557b9b17debSTimur Tabi /* Core 0 interrupt */ 558b9b17debSTimur Tabi ret = platform_get_irq(pdev, 0); 559b9b17debSTimur Tabi if (ret < 0) { 560b9b17debSTimur Tabi dev_err(&pdev->dev, 561b9b17debSTimur Tabi "error: missing core0 irq resource (error=%i)\n", ret); 562b9b17debSTimur Tabi return ret; 563b9b17debSTimur Tabi } 564b9b17debSTimur Tabi adpt->irq.irq = ret; 565b9b17debSTimur Tabi 566b9b17debSTimur Tabi /* base register address */ 567b9b17debSTimur Tabi res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 568b9b17debSTimur Tabi adpt->base = devm_ioremap_resource(&pdev->dev, res); 569b9b17debSTimur Tabi if (IS_ERR(adpt->base)) 570b9b17debSTimur Tabi return PTR_ERR(adpt->base); 571b9b17debSTimur Tabi 572b9b17debSTimur Tabi /* CSR register address */ 573b9b17debSTimur Tabi res = platform_get_resource(pdev, IORESOURCE_MEM, 1); 574b9b17debSTimur Tabi adpt->csr = devm_ioremap_resource(&pdev->dev, res); 575b9b17debSTimur Tabi if (IS_ERR(adpt->csr)) 576b9b17debSTimur Tabi return PTR_ERR(adpt->csr); 577b9b17debSTimur Tabi 578b9b17debSTimur Tabi netdev->base_addr = (unsigned long)adpt->base; 579b9b17debSTimur Tabi 580b9b17debSTimur Tabi return 0; 581b9b17debSTimur Tabi } 582b9b17debSTimur Tabi 583b9b17debSTimur Tabi static const struct of_device_id emac_dt_match[] = { 584b9b17debSTimur Tabi { 585b9b17debSTimur Tabi .compatible = "qcom,fsm9900-emac", 586b9b17debSTimur Tabi }, 587b9b17debSTimur Tabi {} 588b9b17debSTimur Tabi }; 58970972685SJavier Martinez Canillas MODULE_DEVICE_TABLE(of, emac_dt_match); 590b9b17debSTimur Tabi 5915f3d3807STimur Tabi #if IS_ENABLED(CONFIG_ACPI) 5925f3d3807STimur Tabi static const struct acpi_device_id emac_acpi_match[] = { 5935f3d3807STimur Tabi { 5945f3d3807STimur Tabi .id = "QCOM8070", 5955f3d3807STimur Tabi }, 5965f3d3807STimur Tabi {} 5975f3d3807STimur Tabi }; 5985f3d3807STimur Tabi MODULE_DEVICE_TABLE(acpi, emac_acpi_match); 5995f3d3807STimur Tabi #endif 6005f3d3807STimur Tabi 601b9b17debSTimur Tabi static int emac_probe(struct platform_device *pdev) 602b9b17debSTimur Tabi { 603b9b17debSTimur Tabi struct net_device *netdev; 604b9b17debSTimur Tabi struct emac_adapter *adpt; 605b9b17debSTimur Tabi struct emac_phy *phy; 606b9b17debSTimur Tabi u16 devid, revid; 607b9b17debSTimur Tabi u32 reg; 608b9b17debSTimur Tabi int ret; 609b9b17debSTimur Tabi 610b9b17debSTimur Tabi /* The EMAC itself is capable of 64-bit DMA, so try that first. */ 611b9b17debSTimur Tabi ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 612b9b17debSTimur Tabi if (ret) { 613b9b17debSTimur Tabi /* Some platforms may restrict the EMAC's address bus to less 614b9b17debSTimur Tabi * then the size of DDR. In this case, we need to try a 615b9b17debSTimur Tabi * smaller mask. We could try every possible smaller mask, 616b9b17debSTimur Tabi * but that's overkill. Instead, just fall to 32-bit, which 617b9b17debSTimur Tabi * should always work. 618b9b17debSTimur Tabi */ 619b9b17debSTimur Tabi ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 620b9b17debSTimur Tabi if (ret) { 621b9b17debSTimur Tabi dev_err(&pdev->dev, "could not set DMA mask\n"); 622b9b17debSTimur Tabi return ret; 623b9b17debSTimur Tabi } 624b9b17debSTimur Tabi } 625b9b17debSTimur Tabi 626b9b17debSTimur Tabi netdev = alloc_etherdev(sizeof(struct emac_adapter)); 627b9b17debSTimur Tabi if (!netdev) 628b9b17debSTimur Tabi return -ENOMEM; 629b9b17debSTimur Tabi 630b9b17debSTimur Tabi dev_set_drvdata(&pdev->dev, netdev); 631b9b17debSTimur Tabi SET_NETDEV_DEV(netdev, &pdev->dev); 63279f664edSTimur Tabi emac_set_ethtool_ops(netdev); 633b9b17debSTimur Tabi 634b9b17debSTimur Tabi adpt = netdev_priv(netdev); 635b9b17debSTimur Tabi adpt->netdev = netdev; 636b9b17debSTimur Tabi adpt->msg_enable = EMAC_MSG_DEFAULT; 637b9b17debSTimur Tabi 638b9b17debSTimur Tabi phy = &adpt->phy; 639b9b17debSTimur Tabi 640b9b17debSTimur Tabi mutex_init(&adpt->reset_lock); 641b9b17debSTimur Tabi spin_lock_init(&adpt->stats.lock); 642b9b17debSTimur Tabi 643b9b17debSTimur Tabi adpt->irq.mask = RX_PKT_INT0 | IMR_NORMAL_MASK; 644b9b17debSTimur Tabi 645b9b17debSTimur Tabi ret = emac_probe_resources(pdev, adpt); 646b9b17debSTimur Tabi if (ret) 647b9b17debSTimur Tabi goto err_undo_netdev; 648b9b17debSTimur Tabi 649b9b17debSTimur Tabi /* initialize clocks */ 650b9b17debSTimur Tabi ret = emac_clks_phase1_init(pdev, adpt); 651b9b17debSTimur Tabi if (ret) { 652b9b17debSTimur Tabi dev_err(&pdev->dev, "could not initialize clocks\n"); 653b9b17debSTimur Tabi goto err_undo_netdev; 654b9b17debSTimur Tabi } 655b9b17debSTimur Tabi 656b9b17debSTimur Tabi netdev->watchdog_timeo = EMAC_WATCHDOG_TIME; 657b9b17debSTimur Tabi netdev->irq = adpt->irq.irq; 658b9b17debSTimur Tabi 659b9b17debSTimur Tabi adpt->rrd_size = EMAC_RRD_SIZE; 660b9b17debSTimur Tabi adpt->tpd_size = EMAC_TPD_SIZE; 661b9b17debSTimur Tabi adpt->rfd_size = EMAC_RFD_SIZE; 662b9b17debSTimur Tabi 663b9b17debSTimur Tabi netdev->netdev_ops = &emac_netdev_ops; 664b9b17debSTimur Tabi 665b9b17debSTimur Tabi emac_init_adapter(adpt); 666b9b17debSTimur Tabi 667b9b17debSTimur Tabi /* init external phy */ 668b9b17debSTimur Tabi ret = emac_phy_config(pdev, adpt); 669b9b17debSTimur Tabi if (ret) 670b9b17debSTimur Tabi goto err_undo_clocks; 671b9b17debSTimur Tabi 672b9b17debSTimur Tabi /* init internal sgmii phy */ 673b9b17debSTimur Tabi ret = emac_sgmii_config(pdev, adpt); 674b9b17debSTimur Tabi if (ret) 675b9b17debSTimur Tabi goto err_undo_mdiobus; 676b9b17debSTimur Tabi 677b9b17debSTimur Tabi /* enable clocks */ 678b9b17debSTimur Tabi ret = emac_clks_phase2_init(pdev, adpt); 679b9b17debSTimur Tabi if (ret) { 680b9b17debSTimur Tabi dev_err(&pdev->dev, "could not initialize clocks\n"); 681b9b17debSTimur Tabi goto err_undo_mdiobus; 682b9b17debSTimur Tabi } 683b9b17debSTimur Tabi 684b9b17debSTimur Tabi emac_mac_reset(adpt); 685b9b17debSTimur Tabi 686b9b17debSTimur Tabi /* set hw features */ 687b9b17debSTimur Tabi netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXCSUM | 688b9b17debSTimur Tabi NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_VLAN_CTAG_RX | 689b9b17debSTimur Tabi NETIF_F_HW_VLAN_CTAG_TX; 690b9b17debSTimur Tabi netdev->hw_features = netdev->features; 691b9b17debSTimur Tabi 692b9b17debSTimur Tabi netdev->vlan_features |= NETIF_F_SG | NETIF_F_HW_CSUM | 693b9b17debSTimur Tabi NETIF_F_TSO | NETIF_F_TSO6; 694b9b17debSTimur Tabi 695d894be57SJarod Wilson /* MTU range: 46 - 9194 */ 696d894be57SJarod Wilson netdev->min_mtu = EMAC_MIN_ETH_FRAME_SIZE - 697d894be57SJarod Wilson (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); 698d894be57SJarod Wilson netdev->max_mtu = EMAC_MAX_ETH_FRAME_SIZE - 699d894be57SJarod Wilson (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); 700d894be57SJarod Wilson 701b9b17debSTimur Tabi INIT_WORK(&adpt->work_thread, emac_work_thread); 702b9b17debSTimur Tabi 703b9b17debSTimur Tabi /* Initialize queues */ 704b9b17debSTimur Tabi emac_mac_rx_tx_ring_init_all(pdev, adpt); 705b9b17debSTimur Tabi 706b9b17debSTimur Tabi netif_napi_add(netdev, &adpt->rx_q.napi, emac_napi_rtx, 707b9b17debSTimur Tabi NAPI_POLL_WEIGHT); 708b9b17debSTimur Tabi 709b9b17debSTimur Tabi ret = register_netdev(netdev); 710b9b17debSTimur Tabi if (ret) { 711b9b17debSTimur Tabi dev_err(&pdev->dev, "could not register net device\n"); 712b9b17debSTimur Tabi goto err_undo_napi; 713b9b17debSTimur Tabi } 714b9b17debSTimur Tabi 715b9b17debSTimur Tabi reg = readl_relaxed(adpt->base + EMAC_DMA_MAS_CTRL); 716b9b17debSTimur Tabi devid = (reg & DEV_ID_NUM_BMSK) >> DEV_ID_NUM_SHFT; 717b9b17debSTimur Tabi revid = (reg & DEV_REV_NUM_BMSK) >> DEV_REV_NUM_SHFT; 718b9b17debSTimur Tabi reg = readl_relaxed(adpt->base + EMAC_CORE_HW_VERSION); 719b9b17debSTimur Tabi 720b9b17debSTimur Tabi netif_info(adpt, probe, netdev, 721b9b17debSTimur Tabi "hardware id %d.%d, hardware version %d.%d.%d\n", 722b9b17debSTimur Tabi devid, revid, 723b9b17debSTimur Tabi (reg & MAJOR_BMSK) >> MAJOR_SHFT, 724b9b17debSTimur Tabi (reg & MINOR_BMSK) >> MINOR_SHFT, 725b9b17debSTimur Tabi (reg & STEP_BMSK) >> STEP_SHFT); 726b9b17debSTimur Tabi 727b9b17debSTimur Tabi return 0; 728b9b17debSTimur Tabi 729b9b17debSTimur Tabi err_undo_napi: 730b9b17debSTimur Tabi netif_napi_del(&adpt->rx_q.napi); 731b9b17debSTimur Tabi err_undo_mdiobus: 7326ffe1c4cSJohan Hovold if (!has_acpi_companion(&pdev->dev)) 7336ffe1c4cSJohan Hovold put_device(&adpt->phydev->mdio.dev); 734b9b17debSTimur Tabi mdiobus_unregister(adpt->mii_bus); 735b9b17debSTimur Tabi err_undo_clocks: 736b9b17debSTimur Tabi emac_clks_teardown(adpt); 737b9b17debSTimur Tabi err_undo_netdev: 738b9b17debSTimur Tabi free_netdev(netdev); 739b9b17debSTimur Tabi 740b9b17debSTimur Tabi return ret; 741b9b17debSTimur Tabi } 742b9b17debSTimur Tabi 743b9b17debSTimur Tabi static int emac_remove(struct platform_device *pdev) 744b9b17debSTimur Tabi { 745b9b17debSTimur Tabi struct net_device *netdev = dev_get_drvdata(&pdev->dev); 746b9b17debSTimur Tabi struct emac_adapter *adpt = netdev_priv(netdev); 747b9b17debSTimur Tabi 748b9b17debSTimur Tabi unregister_netdev(netdev); 749b9b17debSTimur Tabi netif_napi_del(&adpt->rx_q.napi); 750b9b17debSTimur Tabi 751b9b17debSTimur Tabi emac_clks_teardown(adpt); 752b9b17debSTimur Tabi 7536ffe1c4cSJohan Hovold if (!has_acpi_companion(&pdev->dev)) 7546ffe1c4cSJohan Hovold put_device(&adpt->phydev->mdio.dev); 755b9b17debSTimur Tabi mdiobus_unregister(adpt->mii_bus); 756b9b17debSTimur Tabi free_netdev(netdev); 757b9b17debSTimur Tabi 75854e19bc7STimur Tabi if (adpt->phy.digital) 75954e19bc7STimur Tabi iounmap(adpt->phy.digital); 76054e19bc7STimur Tabi iounmap(adpt->phy.base); 76154e19bc7STimur Tabi 762b9b17debSTimur Tabi return 0; 763b9b17debSTimur Tabi } 764b9b17debSTimur Tabi 765b9b17debSTimur Tabi static struct platform_driver emac_platform_driver = { 766b9b17debSTimur Tabi .probe = emac_probe, 767b9b17debSTimur Tabi .remove = emac_remove, 768b9b17debSTimur Tabi .driver = { 769b9b17debSTimur Tabi .name = "qcom-emac", 770b9b17debSTimur Tabi .of_match_table = emac_dt_match, 7715f3d3807STimur Tabi .acpi_match_table = ACPI_PTR(emac_acpi_match), 772b9b17debSTimur Tabi }, 773b9b17debSTimur Tabi }; 774b9b17debSTimur Tabi 775b9b17debSTimur Tabi module_platform_driver(emac_platform_driver); 776b9b17debSTimur Tabi 777b9b17debSTimur Tabi MODULE_LICENSE("GPL v2"); 778b9b17debSTimur Tabi MODULE_ALIAS("platform:qcom-emac"); 779