diff options
author | 2023-02-21 18:24:12 -0800 | |
---|---|---|
committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski:
"Core:
- Add dedicated kmem_cache for typical/small skb->head, avoid having
to access struct page at kfree time, and improve memory use.
- Introduce sysctl to set default RPS configuration for new netdevs.
- Define Netlink protocol specification format which can be used to
describe messages used by each family and auto-generate parsers.
Add tools for generating kernel data structures and uAPI headers.
- Expose all net/core sysctls inside netns.
- Remove 4s sleep in netpoll if carrier is instantly detected on
boot.
- Add configurable limit of MDB entries per port, and port-vlan.
- Continue populating drop reasons throughout the stack.
- Retire a handful of legacy Qdiscs and classifiers.
Protocols:
- Support IPv4 big TCP (TSO frames larger than 64kB).
- Add IP_LOCAL_PORT_RANGE socket option, to control local port range
on socket by socket basis.
- Track and report in procfs number of MPTCP sockets used.
- Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
manager.
- IPv6: don't check net.ipv6.route.max_size and rely on garbage
collection to free memory (similarly to IPv4).
- Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).
- ICMP: add per-rate limit counters.
- Add support for user scanning requests in ieee802154.
- Remove static WEP support.
- Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
reporting.
- WiFi 7 EHT channel puncturing support (client & AP).
BPF:
- Add a rbtree data structure following the "next-gen data structure"
precedent set by recently added linked list, that is, by using
kfunc + kptr instead of adding a new BPF map type.
- Expose XDP hints via kfuncs with initial support for RX hash and
timestamp metadata.
- Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
better support decap on GRE tunnel devices not operating in collect
metadata.
- Improve x86 JIT's codegen for PROBE_MEM runtime error checks.
- Remove the need for trace_printk_lock for bpf_trace_printk and
bpf_trace_vprintk helpers.
- Extend libbpf's bpf_tracing.h support for tracing arguments of
kprobes/uprobes and syscall as a special case.
- Significantly reduce the search time for module symbols by
livepatch and BPF.
- Enable cpumasks to be used as kptrs, which is useful for tracing
programs tracking which tasks end up running on which CPUs in
different time intervals.
- Add support for BPF trampoline on s390x and riscv64.
- Add capability to export the XDP features supported by the NIC.
- Add __bpf_kfunc tag for marking kernel functions as kfuncs.
- Add cgroup.memory=nobpf kernel parameter option to disable BPF
memory accounting for container environments.
Netfilter:
- Remove the CLUSTERIP target. It has been marked as obsolete for
years, and we still have WARN splats wrt races of the out-of-band
/proc interface installed by this target.
- Add 'destroy' commands to nf_tables. They are identical to the
existing 'delete' commands, but do not return an error if the
referenced object (set, chain, rule...) did not exist.
Driver API:
- Improve cpumask_local_spread() locality to help NICs set the right
IRQ affinity on AMD platforms.
- Separate C22 and C45 MDIO bus transactions more clearly.
- Introduce new DCB table to control DSCP rewrite on egress.
- Support configuration of Physical Layer Collision Avoidance (PLCA)
Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
shared medium Ethernet.
- Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
preemption of low priority frames by high priority frames.
- Add support for controlling MACSec offload using netlink SET.
- Rework devlink instance refcounts to allow registration and
de-registration under the instance lock. Split the code into
multiple files, drop some of the unnecessarily granular locks and
factor out common parts of netlink operation handling.
- Add TX frame aggregation parameters (for USB drivers).
- Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
messages with notifications for debug.
- Allow offloading of UDP NEW connections via act_ct.
- Add support for per action HW stats in TC.
- Support hardware miss to TC action (continue processing in SW from
a specific point in the action chain).
- Warn if old Wireless Extension user space interface is used with
modern cfg80211/mac80211 drivers. Do not support Wireless
Extensions for Wi-Fi 7 devices at all. Everyone should switch to
using nl80211 interface instead.
- Improve the CAN bit timing configuration. Use extack to return
error messages directly to user space, update the SJW handling,
including the definition of a new default value that will benefit
CAN-FD controllers, by increasing their oscillator tolerance.
New hardware / drivers:
- Ethernet:
- nVidia BlueField-3 support (control traffic driver)
- Ethernet support for imx93 SoCs
- Motorcomm yt8531 gigabit Ethernet PHY
- onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
- Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
- Amlogic gxl MDIO mux
- WiFi:
- RealTek RTL8188EU (rtl8xxxu)
- Qualcomm Wi-Fi 7 devices (ath12k)
- CAN:
- Renesas R-Car V4H
Drivers:
- Bluetooth:
- Set Per Platform Antenna Gain (PPAG) for Intel controllers.
- Ethernet NICs:
- Intel (1G, igc):
- support TSN / Qbv / packet scheduling features of i226 model
- Intel (100G, ice):
- use GNSS subsystem instead of TTY
- multi-buffer XDP support
- extend support for GPIO pins to E823 devices
- nVidia/Mellanox:
- update the shared buffer configuration on PFC commands
- implement PTP adjphase function for HW offset control
- TC support for Geneve and GRE with VF tunnel offload
- more efficient crypto key management method
- multi-port eswitch support
- Netronome/Corigine:
- add DCB IEEE support
- support IPsec offloading for NFP3800
- Freescale/NXP (enetc):
- support XDP_REDIRECT for XDP non-linear buffers
- improve reconfig, avoid link flap and waiting for idle
- support MAC Merge layer
- Other NICs:
- sfc/ef100: add basic devlink support for ef100
- ionic: rx_push mode operation (writing descriptors via MMIO)
- bnxt: use the auxiliary bus abstraction for RDMA
- r8169: disable ASPM and reset bus in case of tx timeout
- cpsw: support QSGMII mode for J721e CPSW9G
- cpts: support pulse-per-second output
- ngbe: add an mdio bus driver
- usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
- r8152: handle devices with FW with NCM support
- amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
- virtio-net: support multi buffer XDP
- virtio/vsock: replace virtio_vsock_pkt with sk_buff
- tsnep: XDP support
- Ethernet high-speed switches:
- nVidia/Mellanox (mlxsw):
- add support for latency TLV (in FW control messages)
- Microchip (sparx5):
- separate explicit and implicit traffic forwarding rules, make
the implicit rules always active
- add support for egress DSCP rewrite
- IS0 VCAP support (Ingress Classification)
- IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
etc.)
- ES2 VCAP support (Egress Access Control)
- support for Per-Stream Filtering and Policing (802.1Q,
8.6.5.1)
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- add MAB (port auth) offload support
- enable PTP receive for mv88e6390
- NXP (ocelot):
- support MAC Merge layer
- support for the the vsc7512 internal copper phys
- Microchip:
- lan9303: convert to PHYLINK
- lan966x: support TC flower filter statistics
- lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
- lan937x: support Credit Based Shaper configuration
- ksz9477: support Energy Efficient Ethernet
- other:
- qca8k: convert to regmap read/write API, use bulk operations
- rswitch: Improve TX timestamp accuracy
- Intel WiFi (iwlwifi):
- EHT (Wi-Fi 7) rate reporting
- STEP equalizer support: transfer some STEP (connection to radio
on platforms with integrated wifi) related parameters from the
BIOS to the firmware.
- Qualcomm 802.11ax WiFi (ath11k):
- IPQ5018 support
- Fine Timing Measurement (FTM) responder role support
- channel 177 support
- MediaTek WiFi (mt76):
- per-PHY LED support
- mt7996: EHT (Wi-Fi 7) support
- Wireless Ethernet Dispatch (WED) reset support
- switch to using page pool allocator
- RealTek WiFi (rtw89):
- support new version of Bluetooth co-existance
- Mobile:
- rmnet: support TX aggregation"
* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
page_pool: add a comment explaining the fragment counter usage
net: ethtool: fix __ethtool_dev_mm_supported() implementation
ethtool: pse-pd: Fix double word in comments
xsk: add linux/vmalloc.h to xsk.c
sefltests: netdevsim: wait for devlink instance after netns removal
selftest: fib_tests: Always cleanup before exit
net/mlx5e: Align IPsec ASO result memory to be as required by hardware
net/mlx5e: TC, Set CT miss to the specific ct action instance
net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
net/mlx5: Refactor tc miss handling to a single function
net/mlx5: Kconfig: Make tc offload depend on tc skb extension
net/sched: flower: Support hardware miss to tc action
net/sched: flower: Move filter handle initialization earlier
net/sched: cls_api: Support hardware miss to tc action
net/sched: Rename user cookie and act cookie
sfc: fix builds without CONFIG_RTC_LIB
sfc: clean up some inconsistent indentings
net/mlx4_en: Introduce flexible array to silence overflow warning
net: lan966x: Fix possible deadlock inside PTP
net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
...
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c')
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | 504 |
1 files changed, 504 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c new file mode 100644 index 000000000..18acf7dd7 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c @@ -0,0 +1,504 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Synopsys DWC Ethernet Quality-of-Service v4.10a linux driver + * + * Copyright (C) 2016 Joao Pinto <jpinto@synopsys.com> + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/device.h> +#include <linux/gpio/consumer.h> +#include <linux/ethtool.h> +#include <linux/io.h> +#include <linux/iopoll.h> +#include <linux/ioport.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/of_net.h> +#include <linux/mfd/syscon.h> +#include <linux/platform_device.h> +#include <linux/reset.h> +#include <linux/stmmac.h> + +#include "stmmac_platform.h" +#include "dwmac4.h" + +struct tegra_eqos { + struct device *dev; + void __iomem *regs; + + struct reset_control *rst; + struct clk *clk_master; + struct clk *clk_slave; + struct clk *clk_tx; + struct clk *clk_rx; + + struct gpio_desc *reset; +}; + +static int dwc_eth_dwmac_config_dt(struct platform_device *pdev, + struct plat_stmmacenet_data *plat_dat) +{ + struct device *dev = &pdev->dev; + u32 burst_map = 0; + u32 bit_index = 0; + u32 a_index = 0; + + if (!plat_dat->axi) { + plat_dat->axi = kzalloc(sizeof(struct stmmac_axi), GFP_KERNEL); + + if (!plat_dat->axi) + return -ENOMEM; + } + + plat_dat->axi->axi_lpi_en = device_property_read_bool(dev, + "snps,en-lpi"); + if (device_property_read_u32(dev, "snps,write-requests", + &plat_dat->axi->axi_wr_osr_lmt)) { + /** + * Since the register has a reset value of 1, if property + * is missing, default to 1. + */ + plat_dat->axi->axi_wr_osr_lmt = 1; + } else { + /** + * If property exists, to keep the behavior from dwc_eth_qos, + * subtract one after parsing. + */ + plat_dat->axi->axi_wr_osr_lmt--; + } + + if (device_property_read_u32(dev, "snps,read-requests", + &plat_dat->axi->axi_rd_osr_lmt)) { + /** + * Since the register has a reset value of 1, if property + * is missing, default to 1. + */ + plat_dat->axi->axi_rd_osr_lmt = 1; + } else { + /** + * If property exists, to keep the behavior from dwc_eth_qos, + * subtract one after parsing. + */ + plat_dat->axi->axi_rd_osr_lmt--; + } + device_property_read_u32(dev, "snps,burst-map", &burst_map); + + /* converts burst-map bitmask to burst array */ + for (bit_index = 0; bit_index < 7; bit_index++) { + if (burst_map & (1 << bit_index)) { + switch (bit_index) { + case 0: + plat_dat->axi->axi_blen[a_index] = 4; break; + case 1: + plat_dat->axi->axi_blen[a_index] = 8; break; + case 2: + plat_dat->axi->axi_blen[a_index] = 16; break; + case 3: + plat_dat->axi->axi_blen[a_index] = 32; break; + case 4: + plat_dat->axi->axi_blen[a_index] = 64; break; + case 5: + plat_dat->axi->axi_blen[a_index] = 128; break; + case 6: + plat_dat->axi->axi_blen[a_index] = 256; break; + default: + break; + } + a_index++; + } + } + + /* dwc-qos needs GMAC4, AAL, TSO and PMT */ + plat_dat->has_gmac4 = 1; + plat_dat->dma_cfg->aal = 1; + plat_dat->tso_en = 1; + plat_dat->pmt = 1; + + return 0; +} + +static int dwc_qos_probe(struct platform_device *pdev, + struct plat_stmmacenet_data *plat_dat, + struct stmmac_resources *stmmac_res) +{ + int err; + + plat_dat->stmmac_clk = devm_clk_get(&pdev->dev, "apb_pclk"); + if (IS_ERR(plat_dat->stmmac_clk)) { + dev_err(&pdev->dev, "apb_pclk clock not found.\n"); + return PTR_ERR(plat_dat->stmmac_clk); + } + + err = clk_prepare_enable(plat_dat->stmmac_clk); + if (err < 0) { + dev_err(&pdev->dev, "failed to enable apb_pclk clock: %d\n", + err); + return err; + } + + plat_dat->pclk = devm_clk_get(&pdev->dev, "phy_ref_clk"); + if (IS_ERR(plat_dat->pclk)) { + dev_err(&pdev->dev, "phy_ref_clk clock not found.\n"); + err = PTR_ERR(plat_dat->pclk); + goto disable; + } + + err = clk_prepare_enable(plat_dat->pclk); + if (err < 0) { + dev_err(&pdev->dev, "failed to enable phy_ref clock: %d\n", + err); + goto disable; + } + + return 0; + +disable: + clk_disable_unprepare(plat_dat->stmmac_clk); + return err; +} + +static void dwc_qos_remove(struct platform_device *pdev) +{ + struct net_device *ndev = platform_get_drvdata(pdev); + struct stmmac_priv *priv = netdev_priv(ndev); + + clk_disable_unprepare(priv->plat->pclk); + clk_disable_unprepare(priv->plat->stmmac_clk); +} + +#define SDMEMCOMPPADCTRL 0x8800 +#define SDMEMCOMPPADCTRL_PAD_E_INPUT_OR_E_PWRD BIT(31) + +#define AUTO_CAL_CONFIG 0x8804 +#define AUTO_CAL_CONFIG_START BIT(31) +#define AUTO_CAL_CONFIG_ENABLE BIT(29) + +#define AUTO_CAL_STATUS 0x880c +#define AUTO_CAL_STATUS_ACTIVE BIT(31) + +static void tegra_eqos_fix_speed(void *priv, unsigned int speed) +{ + struct tegra_eqos *eqos = priv; + unsigned long rate = 125000000; + bool needs_calibration = false; + u32 value; + int err; + + switch (speed) { + case SPEED_1000: + needs_calibration = true; + rate = 125000000; + break; + + case SPEED_100: + needs_calibration = true; + rate = 25000000; + break; + + case SPEED_10: + rate = 2500000; + break; + + default: + dev_err(eqos->dev, "invalid speed %u\n", speed); + break; + } + + if (needs_calibration) { + /* calibrate */ + value = readl(eqos->regs + SDMEMCOMPPADCTRL); + value |= SDMEMCOMPPADCTRL_PAD_E_INPUT_OR_E_PWRD; + writel(value, eqos->regs + SDMEMCOMPPADCTRL); + + udelay(1); + + value = readl(eqos->regs + AUTO_CAL_CONFIG); + value |= AUTO_CAL_CONFIG_START | AUTO_CAL_CONFIG_ENABLE; + writel(value, eqos->regs + AUTO_CAL_CONFIG); + + err = readl_poll_timeout_atomic(eqos->regs + AUTO_CAL_STATUS, + value, + value & AUTO_CAL_STATUS_ACTIVE, + 1, 10); + if (err < 0) { + dev_err(eqos->dev, "calibration did not start\n"); + goto failed; + } + + err = readl_poll_timeout_atomic(eqos->regs + AUTO_CAL_STATUS, + value, + (value & AUTO_CAL_STATUS_ACTIVE) == 0, + 20, 200); + if (err < 0) { + dev_err(eqos->dev, "calibration didn't finish\n"); + goto failed; + } + + failed: + value = readl(eqos->regs + SDMEMCOMPPADCTRL); + value &= ~SDMEMCOMPPADCTRL_PAD_E_INPUT_OR_E_PWRD; + writel(value, eqos->regs + SDMEMCOMPPADCTRL); + } else { + value = readl(eqos->regs + AUTO_CAL_CONFIG); + value &= ~AUTO_CAL_CONFIG_ENABLE; + writel(value, eqos->regs + AUTO_CAL_CONFIG); + } + + err = clk_set_rate(eqos->clk_tx, rate); + if (err < 0) + dev_err(eqos->dev, "failed to set TX rate: %d\n", err); +} + +static int tegra_eqos_init(struct platform_device *pdev, void *priv) +{ + struct tegra_eqos *eqos = priv; + unsigned long rate; + u32 value; + + rate = clk_get_rate(eqos->clk_slave); + + value = (rate / 1000000) - 1; + writel(value, eqos->regs + GMAC_1US_TIC_COUNTER); + + return 0; +} + +static int tegra_eqos_probe(struct platform_device *pdev, + struct plat_stmmacenet_data *data, + struct stmmac_resources *res) +{ + struct device *dev = &pdev->dev; + struct tegra_eqos *eqos; + int err; + + eqos = devm_kzalloc(&pdev->dev, sizeof(*eqos), GFP_KERNEL); + if (!eqos) + return -ENOMEM; + + eqos->dev = &pdev->dev; + eqos->regs = res->addr; + + if (!is_of_node(dev->fwnode)) + goto bypass_clk_reset_gpio; + + eqos->clk_master = devm_clk_get(&pdev->dev, "master_bus"); + if (IS_ERR(eqos->clk_master)) { + err = PTR_ERR(eqos->clk_master); + goto error; + } + + err = clk_prepare_enable(eqos->clk_master); + if (err < 0) + goto error; + + eqos->clk_slave = devm_clk_get(&pdev->dev, "slave_bus"); + if (IS_ERR(eqos->clk_slave)) { + err = PTR_ERR(eqos->clk_slave); + goto disable_master; + } + + data->stmmac_clk = eqos->clk_slave; + + err = clk_prepare_enable(eqos->clk_slave); + if (err < 0) + goto disable_master; + + eqos->clk_rx = devm_clk_get(&pdev->dev, "rx"); + if (IS_ERR(eqos->clk_rx)) { + err = PTR_ERR(eqos->clk_rx); + goto disable_slave; + } + + err = clk_prepare_enable(eqos->clk_rx); + if (err < 0) + goto disable_slave; + + eqos->clk_tx = devm_clk_get(&pdev->dev, "tx"); + if (IS_ERR(eqos->clk_tx)) { + err = PTR_ERR(eqos->clk_tx); + goto disable_rx; + } + + err = clk_prepare_enable(eqos->clk_tx); + if (err < 0) + goto disable_rx; + + eqos->reset = devm_gpiod_get(&pdev->dev, "phy-reset", GPIOD_OUT_HIGH); + if (IS_ERR(eqos->reset)) { + err = PTR_ERR(eqos->reset); + goto disable_tx; + } + + usleep_range(2000, 4000); + gpiod_set_value(eqos->reset, 0); + + /* MDIO bus was already reset just above */ + data->mdio_bus_data->needs_reset = false; + + eqos->rst = devm_reset_control_get(&pdev->dev, "eqos"); + if (IS_ERR(eqos->rst)) { + err = PTR_ERR(eqos->rst); + goto reset_phy; + } + + err = reset_control_assert(eqos->rst); + if (err < 0) + goto reset_phy; + + usleep_range(2000, 4000); + + err = reset_control_deassert(eqos->rst); + if (err < 0) + goto reset_phy; + + usleep_range(2000, 4000); + +bypass_clk_reset_gpio: + data->fix_mac_speed = tegra_eqos_fix_speed; + data->init = tegra_eqos_init; + data->bsp_priv = eqos; + data->sph_disable = 1; + + err = tegra_eqos_init(pdev, eqos); + if (err < 0) + goto reset; + + return 0; +reset: + reset_control_assert(eqos->rst); +reset_phy: + gpiod_set_value(eqos->reset, 1); +disable_tx: + clk_disable_unprepare(eqos->clk_tx); +disable_rx: + clk_disable_unprepare(eqos->clk_rx); +disable_slave: + clk_disable_unprepare(eqos->clk_slave); +disable_master: + clk_disable_unprepare(eqos->clk_master); +error: + return err; +} + +static void tegra_eqos_remove(struct platform_device *pdev) +{ + struct tegra_eqos *eqos = get_stmmac_bsp_priv(&pdev->dev); + + reset_control_assert(eqos->rst); + gpiod_set_value(eqos->reset, 1); + clk_disable_unprepare(eqos->clk_tx); + clk_disable_unprepare(eqos->clk_rx); + clk_disable_unprepare(eqos->clk_slave); + clk_disable_unprepare(eqos->clk_master); +} + +struct dwc_eth_dwmac_data { + int (*probe)(struct platform_device *pdev, + struct plat_stmmacenet_data *data, + struct stmmac_resources *res); + void (*remove)(struct platform_device *pdev); +}; + +static const struct dwc_eth_dwmac_data dwc_qos_data = { + .probe = dwc_qos_probe, + .remove = dwc_qos_remove, +}; + +static const struct dwc_eth_dwmac_data tegra_eqos_data = { + .probe = tegra_eqos_probe, + .remove = tegra_eqos_remove, +}; + +static int dwc_eth_dwmac_probe(struct platform_device *pdev) +{ + const struct dwc_eth_dwmac_data *data; + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; + int ret; + + data = device_get_match_data(&pdev->dev); + + memset(&stmmac_res, 0, sizeof(struct stmmac_resources)); + + /** + * Since stmmac_platform supports name IRQ only, basic platform + * resource initialization is done in the glue logic. + */ + stmmac_res.irq = platform_get_irq(pdev, 0); + if (stmmac_res.irq < 0) + return stmmac_res.irq; + stmmac_res.wol_irq = stmmac_res.irq; + + stmmac_res.addr = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(stmmac_res.addr)) + return PTR_ERR(stmmac_res.addr); + + plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); + if (IS_ERR(plat_dat)) + return PTR_ERR(plat_dat); + + ret = data->probe(pdev, plat_dat, &stmmac_res); + if (ret < 0) { + dev_err_probe(&pdev->dev, ret, "failed to probe subdriver\n"); + + goto remove_config; + } + + ret = dwc_eth_dwmac_config_dt(pdev, plat_dat); + if (ret) + goto remove; + + ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); + if (ret) + goto remove; + + return ret; + +remove: + data->remove(pdev); +remove_config: + stmmac_remove_config_dt(pdev, plat_dat); + + return ret; +} + +static int dwc_eth_dwmac_remove(struct platform_device *pdev) +{ + struct net_device *ndev = platform_get_drvdata(pdev); + struct stmmac_priv *priv = netdev_priv(ndev); + const struct dwc_eth_dwmac_data *data; + + data = device_get_match_data(&pdev->dev); + + stmmac_dvr_remove(&pdev->dev); + + data->remove(pdev); + + stmmac_remove_config_dt(pdev, priv->plat); + + return 0; +} + +static const struct of_device_id dwc_eth_dwmac_match[] = { + { .compatible = "snps,dwc-qos-ethernet-4.10", .data = &dwc_qos_data }, + { .compatible = "nvidia,tegra186-eqos", .data = &tegra_eqos_data }, + { } +}; +MODULE_DEVICE_TABLE(of, dwc_eth_dwmac_match); + +static struct platform_driver dwc_eth_dwmac_driver = { + .probe = dwc_eth_dwmac_probe, + .remove = dwc_eth_dwmac_remove, + .driver = { + .name = "dwc-eth-dwmac", + .pm = &stmmac_pltfr_pm_ops, + .of_match_table = dwc_eth_dwmac_match, + }, +}; +module_platform_driver(dwc_eth_dwmac_driver); + +MODULE_AUTHOR("Joao Pinto <jpinto@synopsys.com>"); +MODULE_DESCRIPTION("Synopsys DWC Ethernet Quality-of-Service v4.10a driver"); +MODULE_LICENSE("GPL v2"); |