mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
776 lines
18 KiB
776 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved. |
|
*/ |
|
|
|
/* Qualcomm Technologies, Inc. EMAC Gigabit Ethernet Driver */ |
|
|
|
#include <linux/if_ether.h> |
|
#include <linux/if_vlan.h> |
|
#include <linux/interrupt.h> |
|
#include <linux/io.h> |
|
#include <linux/module.h> |
|
#include <linux/of.h> |
|
#include <linux/of_net.h> |
|
#include <linux/of_device.h> |
|
#include <linux/phy.h> |
|
#include <linux/platform_device.h> |
|
#include <linux/acpi.h> |
|
#include "emac.h" |
|
#include "emac-mac.h" |
|
#include "emac-phy.h" |
|
#include "emac-sgmii.h" |
|
|
|
#define EMAC_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \ |
|
NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP) |
|
|
|
#define EMAC_RRD_SIZE 4 |
|
/* The RRD size if timestamping is enabled: */ |
|
#define EMAC_TS_RRD_SIZE 6 |
|
#define EMAC_TPD_SIZE 4 |
|
#define EMAC_RFD_SIZE 2 |
|
|
|
#define REG_MAC_RX_STATUS_BIN EMAC_RXMAC_STATC_REG0 |
|
#define REG_MAC_RX_STATUS_END EMAC_RXMAC_STATC_REG22 |
|
#define REG_MAC_TX_STATUS_BIN EMAC_TXMAC_STATC_REG0 |
|
#define REG_MAC_TX_STATUS_END EMAC_TXMAC_STATC_REG24 |
|
|
|
#define RXQ0_NUM_RFD_PREF_DEF 8 |
|
#define TXQ0_NUM_TPD_PREF_DEF 5 |
|
|
|
#define EMAC_PREAMBLE_DEF 7 |
|
|
|
#define DMAR_DLY_CNT_DEF 15 |
|
#define DMAW_DLY_CNT_DEF 4 |
|
|
|
#define IMR_NORMAL_MASK (ISR_ERROR | ISR_OVER | ISR_TX_PKT) |
|
|
|
#define ISR_TX_PKT (\ |
|
TX_PKT_INT |\ |
|
TX_PKT_INT1 |\ |
|
TX_PKT_INT2 |\ |
|
TX_PKT_INT3) |
|
|
|
#define ISR_OVER (\ |
|
RFD0_UR_INT |\ |
|
RFD1_UR_INT |\ |
|
RFD2_UR_INT |\ |
|
RFD3_UR_INT |\ |
|
RFD4_UR_INT |\ |
|
RXF_OF_INT |\ |
|
TXF_UR_INT) |
|
|
|
#define ISR_ERROR (\ |
|
DMAR_TO_INT |\ |
|
DMAW_TO_INT |\ |
|
TXQ_TO_INT) |
|
|
|
/* in sync with enum emac_clk_id */ |
|
static const char * const emac_clk_name[] = { |
|
"axi_clk", "cfg_ahb_clk", "high_speed_clk", "mdio_clk", "tx_clk", |
|
"rx_clk", "sys_clk" |
|
}; |
|
|
|
void emac_reg_update32(void __iomem *addr, u32 mask, u32 val) |
|
{ |
|
u32 data = readl(addr); |
|
|
|
writel(((data & ~mask) | val), addr); |
|
} |
|
|
|
/* reinitialize */ |
|
int emac_reinit_locked(struct emac_adapter *adpt) |
|
{ |
|
int ret; |
|
|
|
mutex_lock(&adpt->reset_lock); |
|
|
|
emac_mac_down(adpt); |
|
emac_sgmii_reset(adpt); |
|
ret = emac_mac_up(adpt); |
|
|
|
mutex_unlock(&adpt->reset_lock); |
|
|
|
return ret; |
|
} |
|
|
|
/* NAPI */ |
|
static int emac_napi_rtx(struct napi_struct *napi, int budget) |
|
{ |
|
struct emac_rx_queue *rx_q = |
|
container_of(napi, struct emac_rx_queue, napi); |
|
struct emac_adapter *adpt = netdev_priv(rx_q->netdev); |
|
struct emac_irq *irq = rx_q->irq; |
|
int work_done = 0; |
|
|
|
emac_mac_rx_process(adpt, rx_q, &work_done, budget); |
|
|
|
if (work_done < budget) { |
|
napi_complete_done(napi, work_done); |
|
|
|
irq->mask |= rx_q->intr; |
|
writel(irq->mask, adpt->base + EMAC_INT_MASK); |
|
} |
|
|
|
return work_done; |
|
} |
|
|
|
/* Transmit the packet */ |
|
static netdev_tx_t emac_start_xmit(struct sk_buff *skb, |
|
struct net_device *netdev) |
|
{ |
|
struct emac_adapter *adpt = netdev_priv(netdev); |
|
|
|
return emac_mac_tx_buf_send(adpt, &adpt->tx_q, skb); |
|
} |
|
|
|
static irqreturn_t emac_isr(int _irq, void *data) |
|
{ |
|
struct emac_irq *irq = data; |
|
struct emac_adapter *adpt = |
|
container_of(irq, struct emac_adapter, irq); |
|
struct emac_rx_queue *rx_q = &adpt->rx_q; |
|
u32 isr, status; |
|
|
|
/* disable the interrupt */ |
|
writel(0, adpt->base + EMAC_INT_MASK); |
|
|
|
isr = readl_relaxed(adpt->base + EMAC_INT_STATUS); |
|
|
|
status = isr & irq->mask; |
|
if (status == 0) |
|
goto exit; |
|
|
|
if (status & ISR_ERROR) { |
|
net_err_ratelimited("%s: error interrupt 0x%lx\n", |
|
adpt->netdev->name, status & ISR_ERROR); |
|
/* reset MAC */ |
|
schedule_work(&adpt->work_thread); |
|
} |
|
|
|
/* Schedule the napi for receive queue with interrupt |
|
* status bit set |
|
*/ |
|
if (status & rx_q->intr) { |
|
if (napi_schedule_prep(&rx_q->napi)) { |
|
irq->mask &= ~rx_q->intr; |
|
__napi_schedule(&rx_q->napi); |
|
} |
|
} |
|
|
|
if (status & TX_PKT_INT) |
|
emac_mac_tx_process(adpt, &adpt->tx_q); |
|
|
|
if (status & ISR_OVER) |
|
net_warn_ratelimited("%s: TX/RX overflow interrupt\n", |
|
adpt->netdev->name); |
|
|
|
exit: |
|
/* enable the interrupt */ |
|
writel(irq->mask, adpt->base + EMAC_INT_MASK); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
/* Configure VLAN tag strip/insert feature */ |
|
static int emac_set_features(struct net_device *netdev, |
|
netdev_features_t features) |
|
{ |
|
netdev_features_t changed = features ^ netdev->features; |
|
struct emac_adapter *adpt = netdev_priv(netdev); |
|
|
|
/* We only need to reprogram the hardware if the VLAN tag features |
|
* have changed, and if it's already running. |
|
*/ |
|
if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX))) |
|
return 0; |
|
|
|
if (!netif_running(netdev)) |
|
return 0; |
|
|
|
/* emac_mac_mode_config() uses netdev->features to configure the EMAC, |
|
* so make sure it's set first. |
|
*/ |
|
netdev->features = features; |
|
|
|
return emac_reinit_locked(adpt); |
|
} |
|
|
|
/* Configure Multicast and Promiscuous modes */ |
|
static void emac_rx_mode_set(struct net_device *netdev) |
|
{ |
|
struct emac_adapter *adpt = netdev_priv(netdev); |
|
struct netdev_hw_addr *ha; |
|
|
|
emac_mac_mode_config(adpt); |
|
|
|
/* update multicast address filtering */ |
|
emac_mac_multicast_addr_clear(adpt); |
|
netdev_for_each_mc_addr(ha, netdev) |
|
emac_mac_multicast_addr_set(adpt, ha->addr); |
|
} |
|
|
|
/* Change the Maximum Transfer Unit (MTU) */ |
|
static int emac_change_mtu(struct net_device *netdev, int new_mtu) |
|
{ |
|
struct emac_adapter *adpt = netdev_priv(netdev); |
|
|
|
netif_dbg(adpt, hw, adpt->netdev, |
|
"changing MTU from %d to %d\n", netdev->mtu, |
|
new_mtu); |
|
netdev->mtu = new_mtu; |
|
|
|
if (netif_running(netdev)) |
|
return emac_reinit_locked(adpt); |
|
|
|
return 0; |
|
} |
|
|
|
/* Called when the network interface is made active */ |
|
static int emac_open(struct net_device *netdev) |
|
{ |
|
struct emac_adapter *adpt = netdev_priv(netdev); |
|
struct emac_irq *irq = &adpt->irq; |
|
int ret; |
|
|
|
ret = request_irq(irq->irq, emac_isr, 0, "emac-core0", irq); |
|
if (ret) { |
|
netdev_err(adpt->netdev, "could not request emac-core0 irq\n"); |
|
return ret; |
|
} |
|
|
|
/* allocate rx/tx dma buffer & descriptors */ |
|
ret = emac_mac_rx_tx_rings_alloc_all(adpt); |
|
if (ret) { |
|
netdev_err(adpt->netdev, "error allocating rx/tx rings\n"); |
|
free_irq(irq->irq, irq); |
|
return ret; |
|
} |
|
|
|
ret = emac_sgmii_open(adpt); |
|
if (ret) { |
|
emac_mac_rx_tx_rings_free_all(adpt); |
|
free_irq(irq->irq, irq); |
|
return ret; |
|
} |
|
|
|
ret = emac_mac_up(adpt); |
|
if (ret) { |
|
emac_mac_rx_tx_rings_free_all(adpt); |
|
free_irq(irq->irq, irq); |
|
emac_sgmii_close(adpt); |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* Called when the network interface is disabled */ |
|
static int emac_close(struct net_device *netdev) |
|
{ |
|
struct emac_adapter *adpt = netdev_priv(netdev); |
|
|
|
mutex_lock(&adpt->reset_lock); |
|
|
|
emac_sgmii_close(adpt); |
|
emac_mac_down(adpt); |
|
emac_mac_rx_tx_rings_free_all(adpt); |
|
|
|
free_irq(adpt->irq.irq, &adpt->irq); |
|
|
|
mutex_unlock(&adpt->reset_lock); |
|
|
|
return 0; |
|
} |
|
|
|
/* Respond to a TX hang */ |
|
static void emac_tx_timeout(struct net_device *netdev, unsigned int txqueue) |
|
{ |
|
struct emac_adapter *adpt = netdev_priv(netdev); |
|
|
|
schedule_work(&adpt->work_thread); |
|
} |
|
|
|
/** |
|
* emac_update_hw_stats - read the EMAC stat registers |
|
* @adpt: pointer to adapter struct |
|
* |
|
* Reads the stats registers and write the values to adpt->stats. |
|
* |
|
* adpt->stats.lock must be held while calling this function, |
|
* and while reading from adpt->stats. |
|
*/ |
|
void emac_update_hw_stats(struct emac_adapter *adpt) |
|
{ |
|
struct emac_stats *stats = &adpt->stats; |
|
u64 *stats_itr = &adpt->stats.rx_ok; |
|
void __iomem *base = adpt->base; |
|
unsigned int addr; |
|
|
|
addr = REG_MAC_RX_STATUS_BIN; |
|
while (addr <= REG_MAC_RX_STATUS_END) { |
|
*stats_itr += readl_relaxed(base + addr); |
|
stats_itr++; |
|
addr += sizeof(u32); |
|
} |
|
|
|
/* additional rx status */ |
|
stats->rx_crc_align += readl_relaxed(base + EMAC_RXMAC_STATC_REG23); |
|
stats->rx_jabbers += readl_relaxed(base + EMAC_RXMAC_STATC_REG24); |
|
|
|
/* update tx status */ |
|
addr = REG_MAC_TX_STATUS_BIN; |
|
stats_itr = &stats->tx_ok; |
|
|
|
while (addr <= REG_MAC_TX_STATUS_END) { |
|
*stats_itr += readl_relaxed(base + addr); |
|
stats_itr++; |
|
addr += sizeof(u32); |
|
} |
|
|
|
/* additional tx status */ |
|
stats->tx_col += readl_relaxed(base + EMAC_TXMAC_STATC_REG25); |
|
} |
|
|
|
/* Provide network statistics info for the interface */ |
|
static void emac_get_stats64(struct net_device *netdev, |
|
struct rtnl_link_stats64 *net_stats) |
|
{ |
|
struct emac_adapter *adpt = netdev_priv(netdev); |
|
struct emac_stats *stats = &adpt->stats; |
|
|
|
spin_lock(&stats->lock); |
|
|
|
emac_update_hw_stats(adpt); |
|
|
|
/* return parsed statistics */ |
|
net_stats->rx_packets = stats->rx_ok; |
|
net_stats->tx_packets = stats->tx_ok; |
|
net_stats->rx_bytes = stats->rx_byte_cnt; |
|
net_stats->tx_bytes = stats->tx_byte_cnt; |
|
net_stats->multicast = stats->rx_mcast; |
|
net_stats->collisions = stats->tx_1_col + stats->tx_2_col * 2 + |
|
stats->tx_late_col + stats->tx_abort_col; |
|
|
|
net_stats->rx_errors = stats->rx_frag + stats->rx_fcs_err + |
|
stats->rx_len_err + stats->rx_sz_ov + |
|
stats->rx_align_err; |
|
net_stats->rx_fifo_errors = stats->rx_rxf_ov; |
|
net_stats->rx_length_errors = stats->rx_len_err; |
|
net_stats->rx_crc_errors = stats->rx_fcs_err; |
|
net_stats->rx_frame_errors = stats->rx_align_err; |
|
net_stats->rx_over_errors = stats->rx_rxf_ov; |
|
net_stats->rx_missed_errors = stats->rx_rxf_ov; |
|
|
|
net_stats->tx_errors = stats->tx_late_col + stats->tx_abort_col + |
|
stats->tx_underrun + stats->tx_trunc; |
|
net_stats->tx_fifo_errors = stats->tx_underrun; |
|
net_stats->tx_aborted_errors = stats->tx_abort_col; |
|
net_stats->tx_window_errors = stats->tx_late_col; |
|
|
|
spin_unlock(&stats->lock); |
|
} |
|
|
|
static const struct net_device_ops emac_netdev_ops = { |
|
.ndo_open = emac_open, |
|
.ndo_stop = emac_close, |
|
.ndo_validate_addr = eth_validate_addr, |
|
.ndo_start_xmit = emac_start_xmit, |
|
.ndo_set_mac_address = eth_mac_addr, |
|
.ndo_change_mtu = emac_change_mtu, |
|
.ndo_do_ioctl = phy_do_ioctl_running, |
|
.ndo_tx_timeout = emac_tx_timeout, |
|
.ndo_get_stats64 = emac_get_stats64, |
|
.ndo_set_features = emac_set_features, |
|
.ndo_set_rx_mode = emac_rx_mode_set, |
|
}; |
|
|
|
/* Watchdog task routine, called to reinitialize the EMAC */ |
|
static void emac_work_thread(struct work_struct *work) |
|
{ |
|
struct emac_adapter *adpt = |
|
container_of(work, struct emac_adapter, work_thread); |
|
|
|
emac_reinit_locked(adpt); |
|
} |
|
|
|
/* Initialize various data structures */ |
|
static void emac_init_adapter(struct emac_adapter *adpt) |
|
{ |
|
u32 reg; |
|
|
|
adpt->rrd_size = EMAC_RRD_SIZE; |
|
adpt->tpd_size = EMAC_TPD_SIZE; |
|
adpt->rfd_size = EMAC_RFD_SIZE; |
|
|
|
/* descriptors */ |
|
adpt->tx_desc_cnt = EMAC_DEF_TX_DESCS; |
|
adpt->rx_desc_cnt = EMAC_DEF_RX_DESCS; |
|
|
|
/* dma */ |
|
adpt->dma_order = emac_dma_ord_out; |
|
adpt->dmar_block = emac_dma_req_4096; |
|
adpt->dmaw_block = emac_dma_req_128; |
|
adpt->dmar_dly_cnt = DMAR_DLY_CNT_DEF; |
|
adpt->dmaw_dly_cnt = DMAW_DLY_CNT_DEF; |
|
adpt->tpd_burst = TXQ0_NUM_TPD_PREF_DEF; |
|
adpt->rfd_burst = RXQ0_NUM_RFD_PREF_DEF; |
|
|
|
/* irq moderator */ |
|
reg = ((EMAC_DEF_RX_IRQ_MOD >> 1) << IRQ_MODERATOR2_INIT_SHFT) | |
|
((EMAC_DEF_TX_IRQ_MOD >> 1) << IRQ_MODERATOR_INIT_SHFT); |
|
adpt->irq_mod = reg; |
|
|
|
/* others */ |
|
adpt->preamble = EMAC_PREAMBLE_DEF; |
|
|
|
/* default to automatic flow control */ |
|
adpt->automatic = true; |
|
|
|
/* Disable single-pause-frame mode by default */ |
|
adpt->single_pause_mode = false; |
|
} |
|
|
|
/* Get the clock */ |
|
static int emac_clks_get(struct platform_device *pdev, |
|
struct emac_adapter *adpt) |
|
{ |
|
unsigned int i; |
|
|
|
for (i = 0; i < EMAC_CLK_CNT; i++) { |
|
struct clk *clk = devm_clk_get(&pdev->dev, emac_clk_name[i]); |
|
|
|
if (IS_ERR(clk)) { |
|
dev_err(&pdev->dev, |
|
"could not claim clock %s (error=%li)\n", |
|
emac_clk_name[i], PTR_ERR(clk)); |
|
|
|
return PTR_ERR(clk); |
|
} |
|
|
|
adpt->clk[i] = clk; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* Initialize clocks */ |
|
static int emac_clks_phase1_init(struct platform_device *pdev, |
|
struct emac_adapter *adpt) |
|
{ |
|
int ret; |
|
|
|
/* On ACPI platforms, clocks are controlled by firmware and/or |
|
* ACPI, not by drivers. |
|
*/ |
|
if (has_acpi_companion(&pdev->dev)) |
|
return 0; |
|
|
|
ret = emac_clks_get(pdev, adpt); |
|
if (ret) |
|
return ret; |
|
|
|
ret = clk_prepare_enable(adpt->clk[EMAC_CLK_AXI]); |
|
if (ret) |
|
return ret; |
|
|
|
ret = clk_prepare_enable(adpt->clk[EMAC_CLK_CFG_AHB]); |
|
if (ret) |
|
goto disable_clk_axi; |
|
|
|
ret = clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 19200000); |
|
if (ret) |
|
goto disable_clk_cfg_ahb; |
|
|
|
ret = clk_prepare_enable(adpt->clk[EMAC_CLK_HIGH_SPEED]); |
|
if (ret) |
|
goto disable_clk_cfg_ahb; |
|
|
|
return 0; |
|
|
|
disable_clk_cfg_ahb: |
|
clk_disable_unprepare(adpt->clk[EMAC_CLK_CFG_AHB]); |
|
disable_clk_axi: |
|
clk_disable_unprepare(adpt->clk[EMAC_CLK_AXI]); |
|
|
|
return ret; |
|
} |
|
|
|
/* Enable clocks; needs emac_clks_phase1_init to be called before */ |
|
static int emac_clks_phase2_init(struct platform_device *pdev, |
|
struct emac_adapter *adpt) |
|
{ |
|
int ret; |
|
|
|
if (has_acpi_companion(&pdev->dev)) |
|
return 0; |
|
|
|
ret = clk_set_rate(adpt->clk[EMAC_CLK_TX], 125000000); |
|
if (ret) |
|
return ret; |
|
|
|
ret = clk_prepare_enable(adpt->clk[EMAC_CLK_TX]); |
|
if (ret) |
|
return ret; |
|
|
|
ret = clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 125000000); |
|
if (ret) |
|
return ret; |
|
|
|
ret = clk_set_rate(adpt->clk[EMAC_CLK_MDIO], 25000000); |
|
if (ret) |
|
return ret; |
|
|
|
ret = clk_prepare_enable(adpt->clk[EMAC_CLK_MDIO]); |
|
if (ret) |
|
return ret; |
|
|
|
ret = clk_prepare_enable(adpt->clk[EMAC_CLK_RX]); |
|
if (ret) |
|
return ret; |
|
|
|
return clk_prepare_enable(adpt->clk[EMAC_CLK_SYS]); |
|
} |
|
|
|
static void emac_clks_teardown(struct emac_adapter *adpt) |
|
{ |
|
|
|
unsigned int i; |
|
|
|
for (i = 0; i < EMAC_CLK_CNT; i++) |
|
clk_disable_unprepare(adpt->clk[i]); |
|
} |
|
|
|
/* Get the resources */ |
|
static int emac_probe_resources(struct platform_device *pdev, |
|
struct emac_adapter *adpt) |
|
{ |
|
struct net_device *netdev = adpt->netdev; |
|
char maddr[ETH_ALEN]; |
|
int ret = 0; |
|
|
|
/* get mac address */ |
|
if (device_get_mac_address(&pdev->dev, maddr, ETH_ALEN)) |
|
ether_addr_copy(netdev->dev_addr, maddr); |
|
else |
|
eth_hw_addr_random(netdev); |
|
|
|
/* Core 0 interrupt */ |
|
ret = platform_get_irq(pdev, 0); |
|
if (ret < 0) |
|
return ret; |
|
adpt->irq.irq = ret; |
|
|
|
/* base register address */ |
|
adpt->base = devm_platform_ioremap_resource(pdev, 0); |
|
if (IS_ERR(adpt->base)) |
|
return PTR_ERR(adpt->base); |
|
|
|
/* CSR register address */ |
|
adpt->csr = devm_platform_ioremap_resource(pdev, 1); |
|
if (IS_ERR(adpt->csr)) |
|
return PTR_ERR(adpt->csr); |
|
|
|
netdev->base_addr = (unsigned long)adpt->base; |
|
|
|
return 0; |
|
} |
|
|
|
static const struct of_device_id emac_dt_match[] = { |
|
{ |
|
.compatible = "qcom,fsm9900-emac", |
|
}, |
|
{} |
|
}; |
|
MODULE_DEVICE_TABLE(of, emac_dt_match); |
|
|
|
#if IS_ENABLED(CONFIG_ACPI) |
|
static const struct acpi_device_id emac_acpi_match[] = { |
|
{ |
|
.id = "QCOM8070", |
|
}, |
|
{} |
|
}; |
|
MODULE_DEVICE_TABLE(acpi, emac_acpi_match); |
|
#endif |
|
|
|
static int emac_probe(struct platform_device *pdev) |
|
{ |
|
struct net_device *netdev; |
|
struct emac_adapter *adpt; |
|
struct emac_sgmii *phy; |
|
u16 devid, revid; |
|
u32 reg; |
|
int ret; |
|
|
|
/* The TPD buffer address is limited to: |
|
* 1. PTP: 45bits. (Driver doesn't support yet.) |
|
* 2. NON-PTP: 46bits. |
|
*/ |
|
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(46)); |
|
if (ret) { |
|
dev_err(&pdev->dev, "could not set DMA mask\n"); |
|
return ret; |
|
} |
|
|
|
netdev = alloc_etherdev(sizeof(struct emac_adapter)); |
|
if (!netdev) |
|
return -ENOMEM; |
|
|
|
dev_set_drvdata(&pdev->dev, netdev); |
|
SET_NETDEV_DEV(netdev, &pdev->dev); |
|
emac_set_ethtool_ops(netdev); |
|
|
|
adpt = netdev_priv(netdev); |
|
adpt->netdev = netdev; |
|
adpt->msg_enable = EMAC_MSG_DEFAULT; |
|
|
|
phy = &adpt->phy; |
|
atomic_set(&phy->decode_error_count, 0); |
|
|
|
mutex_init(&adpt->reset_lock); |
|
spin_lock_init(&adpt->stats.lock); |
|
|
|
adpt->irq.mask = RX_PKT_INT0 | IMR_NORMAL_MASK; |
|
|
|
ret = emac_probe_resources(pdev, adpt); |
|
if (ret) |
|
goto err_undo_netdev; |
|
|
|
/* initialize clocks */ |
|
ret = emac_clks_phase1_init(pdev, adpt); |
|
if (ret) { |
|
dev_err(&pdev->dev, "could not initialize clocks\n"); |
|
goto err_undo_netdev; |
|
} |
|
|
|
netdev->watchdog_timeo = EMAC_WATCHDOG_TIME; |
|
netdev->irq = adpt->irq.irq; |
|
|
|
netdev->netdev_ops = &emac_netdev_ops; |
|
|
|
emac_init_adapter(adpt); |
|
|
|
/* init external phy */ |
|
ret = emac_phy_config(pdev, adpt); |
|
if (ret) |
|
goto err_undo_clocks; |
|
|
|
/* init internal sgmii phy */ |
|
ret = emac_sgmii_config(pdev, adpt); |
|
if (ret) |
|
goto err_undo_mdiobus; |
|
|
|
/* enable clocks */ |
|
ret = emac_clks_phase2_init(pdev, adpt); |
|
if (ret) { |
|
dev_err(&pdev->dev, "could not initialize clocks\n"); |
|
goto err_undo_mdiobus; |
|
} |
|
|
|
/* set hw features */ |
|
netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXCSUM | |
|
NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_VLAN_CTAG_RX | |
|
NETIF_F_HW_VLAN_CTAG_TX; |
|
netdev->hw_features = netdev->features; |
|
|
|
netdev->vlan_features |= NETIF_F_SG | NETIF_F_HW_CSUM | |
|
NETIF_F_TSO | NETIF_F_TSO6; |
|
|
|
/* MTU range: 46 - 9194 */ |
|
netdev->min_mtu = EMAC_MIN_ETH_FRAME_SIZE - |
|
(ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); |
|
netdev->max_mtu = EMAC_MAX_ETH_FRAME_SIZE - |
|
(ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); |
|
|
|
INIT_WORK(&adpt->work_thread, emac_work_thread); |
|
|
|
/* Initialize queues */ |
|
emac_mac_rx_tx_ring_init_all(pdev, adpt); |
|
|
|
netif_napi_add(netdev, &adpt->rx_q.napi, emac_napi_rtx, |
|
NAPI_POLL_WEIGHT); |
|
|
|
ret = register_netdev(netdev); |
|
if (ret) { |
|
dev_err(&pdev->dev, "could not register net device\n"); |
|
goto err_undo_napi; |
|
} |
|
|
|
reg = readl_relaxed(adpt->base + EMAC_DMA_MAS_CTRL); |
|
devid = (reg & DEV_ID_NUM_BMSK) >> DEV_ID_NUM_SHFT; |
|
revid = (reg & DEV_REV_NUM_BMSK) >> DEV_REV_NUM_SHFT; |
|
reg = readl_relaxed(adpt->base + EMAC_CORE_HW_VERSION); |
|
|
|
netif_info(adpt, probe, netdev, |
|
"hardware id %d.%d, hardware version %d.%d.%d\n", |
|
devid, revid, |
|
(reg & MAJOR_BMSK) >> MAJOR_SHFT, |
|
(reg & MINOR_BMSK) >> MINOR_SHFT, |
|
(reg & STEP_BMSK) >> STEP_SHFT); |
|
|
|
return 0; |
|
|
|
err_undo_napi: |
|
netif_napi_del(&adpt->rx_q.napi); |
|
err_undo_mdiobus: |
|
put_device(&adpt->phydev->mdio.dev); |
|
mdiobus_unregister(adpt->mii_bus); |
|
err_undo_clocks: |
|
emac_clks_teardown(adpt); |
|
err_undo_netdev: |
|
free_netdev(netdev); |
|
|
|
return ret; |
|
} |
|
|
|
static int emac_remove(struct platform_device *pdev) |
|
{ |
|
struct net_device *netdev = dev_get_drvdata(&pdev->dev); |
|
struct emac_adapter *adpt = netdev_priv(netdev); |
|
|
|
unregister_netdev(netdev); |
|
netif_napi_del(&adpt->rx_q.napi); |
|
|
|
emac_clks_teardown(adpt); |
|
|
|
put_device(&adpt->phydev->mdio.dev); |
|
mdiobus_unregister(adpt->mii_bus); |
|
|
|
if (adpt->phy.digital) |
|
iounmap(adpt->phy.digital); |
|
iounmap(adpt->phy.base); |
|
|
|
free_netdev(netdev); |
|
|
|
return 0; |
|
} |
|
|
|
static void emac_shutdown(struct platform_device *pdev) |
|
{ |
|
struct net_device *netdev = dev_get_drvdata(&pdev->dev); |
|
struct emac_adapter *adpt = netdev_priv(netdev); |
|
|
|
if (netdev->flags & IFF_UP) { |
|
/* Closing the SGMII turns off its interrupts */ |
|
emac_sgmii_close(adpt); |
|
|
|
/* Resetting the MAC turns off all DMA and its interrupts */ |
|
emac_mac_reset(adpt); |
|
} |
|
} |
|
|
|
static struct platform_driver emac_platform_driver = { |
|
.probe = emac_probe, |
|
.remove = emac_remove, |
|
.driver = { |
|
.name = "qcom-emac", |
|
.of_match_table = emac_dt_match, |
|
.acpi_match_table = ACPI_PTR(emac_acpi_match), |
|
}, |
|
.shutdown = emac_shutdown, |
|
}; |
|
|
|
module_platform_driver(emac_platform_driver); |
|
|
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_ALIAS("platform:qcom-emac");
|
|
|