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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
downloadlinux-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-visconti.c')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c300
1 files changed, 300 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
new file mode 100644
index 000000000..c3f10a92b
--- /dev/null
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
@@ -0,0 +1,300 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Toshiba Visconti Ethernet Support
+ *
+ * (C) Copyright 2020 TOSHIBA CORPORATION
+ * (C) Copyright 2020 Toshiba Electronic Devices & Storage Corporation
+ */
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_net.h>
+#include <linux/stmmac.h>
+
+#include "stmmac_platform.h"
+#include "dwmac4.h"
+
+#define REG_ETHER_CONTROL 0x52D4
+#define ETHER_ETH_CONTROL_RESET BIT(17)
+
+#define REG_ETHER_CLOCK_SEL 0x52D0
+#define ETHER_CLK_SEL_TX_CLK_EN BIT(0)
+#define ETHER_CLK_SEL_RX_CLK_EN BIT(1)
+#define ETHER_CLK_SEL_RMII_CLK_EN BIT(2)
+#define ETHER_CLK_SEL_RMII_CLK_RST BIT(3)
+#define ETHER_CLK_SEL_DIV_SEL_2 BIT(4)
+#define ETHER_CLK_SEL_DIV_SEL_20 0
+#define ETHER_CLK_SEL_FREQ_SEL_125M (BIT(9) | BIT(8))
+#define ETHER_CLK_SEL_FREQ_SEL_50M BIT(9)
+#define ETHER_CLK_SEL_FREQ_SEL_25M BIT(8)
+#define ETHER_CLK_SEL_FREQ_SEL_2P5M 0
+#define ETHER_CLK_SEL_TX_CLK_EXT_SEL_IN 0
+#define ETHER_CLK_SEL_TX_CLK_EXT_SEL_TXC BIT(10)
+#define ETHER_CLK_SEL_TX_CLK_EXT_SEL_DIV BIT(11)
+#define ETHER_CLK_SEL_RX_CLK_EXT_SEL_IN 0
+#define ETHER_CLK_SEL_RX_CLK_EXT_SEL_RXC BIT(12)
+#define ETHER_CLK_SEL_RX_CLK_EXT_SEL_DIV BIT(13)
+#define ETHER_CLK_SEL_TX_CLK_O_TX_I 0
+#define ETHER_CLK_SEL_TX_CLK_O_RMII_I BIT(14)
+#define ETHER_CLK_SEL_TX_O_E_N_IN BIT(15)
+#define ETHER_CLK_SEL_RMII_CLK_SEL_IN 0
+#define ETHER_CLK_SEL_RMII_CLK_SEL_RX_C BIT(16)
+
+#define ETHER_CLK_SEL_RX_TX_CLK_EN (ETHER_CLK_SEL_RX_CLK_EN | ETHER_CLK_SEL_TX_CLK_EN)
+
+#define ETHER_CONFIG_INTF_MII 0
+#define ETHER_CONFIG_INTF_RGMII BIT(0)
+#define ETHER_CONFIG_INTF_RMII BIT(2)
+
+struct visconti_eth {
+ void __iomem *reg;
+ u32 phy_intf_sel;
+ struct clk *phy_ref_clk;
+ struct device *dev;
+ spinlock_t lock; /* lock to protect register update */
+};
+
+static void visconti_eth_fix_mac_speed(void *priv, unsigned int speed)
+{
+ struct visconti_eth *dwmac = priv;
+ struct net_device *netdev = dev_get_drvdata(dwmac->dev);
+ unsigned int val, clk_sel_val = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dwmac->lock, flags);
+
+ /* adjust link */
+ val = readl(dwmac->reg + MAC_CTRL_REG);
+ val &= ~(GMAC_CONFIG_PS | GMAC_CONFIG_FES);
+
+ switch (speed) {
+ case SPEED_1000:
+ if (dwmac->phy_intf_sel == ETHER_CONFIG_INTF_RGMII)
+ clk_sel_val = ETHER_CLK_SEL_FREQ_SEL_125M;
+ break;
+ case SPEED_100:
+ if (dwmac->phy_intf_sel == ETHER_CONFIG_INTF_RGMII)
+ clk_sel_val = ETHER_CLK_SEL_FREQ_SEL_25M;
+ if (dwmac->phy_intf_sel == ETHER_CONFIG_INTF_RMII)
+ clk_sel_val = ETHER_CLK_SEL_DIV_SEL_2;
+ val |= GMAC_CONFIG_PS | GMAC_CONFIG_FES;
+ break;
+ case SPEED_10:
+ if (dwmac->phy_intf_sel == ETHER_CONFIG_INTF_RGMII)
+ clk_sel_val = ETHER_CLK_SEL_FREQ_SEL_2P5M;
+ if (dwmac->phy_intf_sel == ETHER_CONFIG_INTF_RMII)
+ clk_sel_val = ETHER_CLK_SEL_DIV_SEL_20;
+ val |= GMAC_CONFIG_PS;
+ break;
+ default:
+ /* No bit control */
+ netdev_err(netdev, "Unsupported speed request (%d)", speed);
+ spin_unlock_irqrestore(&dwmac->lock, flags);
+ return;
+ }
+
+ writel(val, dwmac->reg + MAC_CTRL_REG);
+
+ /* Stop internal clock */
+ val = readl(dwmac->reg + REG_ETHER_CLOCK_SEL);
+ val &= ~(ETHER_CLK_SEL_RMII_CLK_EN | ETHER_CLK_SEL_RX_TX_CLK_EN);
+ val |= ETHER_CLK_SEL_TX_O_E_N_IN;
+ writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+
+ /* Set Clock-Mux, Start clock, Set TX_O direction */
+ switch (dwmac->phy_intf_sel) {
+ case ETHER_CONFIG_INTF_RGMII:
+ val = clk_sel_val | ETHER_CLK_SEL_RX_CLK_EXT_SEL_RXC;
+ writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+
+ val |= ETHER_CLK_SEL_RX_TX_CLK_EN;
+ writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+
+ val &= ~ETHER_CLK_SEL_TX_O_E_N_IN;
+ writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+ break;
+ case ETHER_CONFIG_INTF_RMII:
+ val = clk_sel_val | ETHER_CLK_SEL_RX_CLK_EXT_SEL_DIV |
+ ETHER_CLK_SEL_TX_CLK_EXT_SEL_DIV | ETHER_CLK_SEL_TX_O_E_N_IN |
+ ETHER_CLK_SEL_RMII_CLK_SEL_RX_C;
+ writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+
+ val |= ETHER_CLK_SEL_RMII_CLK_RST;
+ writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+
+ val |= ETHER_CLK_SEL_RMII_CLK_EN | ETHER_CLK_SEL_RX_TX_CLK_EN;
+ writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+ break;
+ case ETHER_CONFIG_INTF_MII:
+ default:
+ val = clk_sel_val | ETHER_CLK_SEL_RX_CLK_EXT_SEL_RXC |
+ ETHER_CLK_SEL_TX_CLK_EXT_SEL_TXC | ETHER_CLK_SEL_TX_O_E_N_IN;
+ writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+
+ val |= ETHER_CLK_SEL_RX_TX_CLK_EN;
+ writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+ break;
+ }
+
+ spin_unlock_irqrestore(&dwmac->lock, flags);
+}
+
+static int visconti_eth_init_hw(struct platform_device *pdev, struct plat_stmmacenet_data *plat_dat)
+{
+ struct visconti_eth *dwmac = plat_dat->bsp_priv;
+ unsigned int reg_val, clk_sel_val;
+
+ switch (plat_dat->phy_interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ dwmac->phy_intf_sel = ETHER_CONFIG_INTF_RGMII;
+ break;
+ case PHY_INTERFACE_MODE_MII:
+ dwmac->phy_intf_sel = ETHER_CONFIG_INTF_MII;
+ break;
+ case PHY_INTERFACE_MODE_RMII:
+ dwmac->phy_intf_sel = ETHER_CONFIG_INTF_RMII;
+ break;
+ default:
+ dev_err(&pdev->dev, "Unsupported phy-mode (%d)\n", plat_dat->phy_interface);
+ return -EOPNOTSUPP;
+ }
+
+ reg_val = dwmac->phy_intf_sel;
+ writel(reg_val, dwmac->reg + REG_ETHER_CONTROL);
+
+ /* Enable TX/RX clock */
+ clk_sel_val = ETHER_CLK_SEL_FREQ_SEL_125M;
+ writel(clk_sel_val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+
+ writel((clk_sel_val | ETHER_CLK_SEL_RMII_CLK_EN | ETHER_CLK_SEL_RX_TX_CLK_EN),
+ dwmac->reg + REG_ETHER_CLOCK_SEL);
+
+ /* release internal-reset */
+ reg_val |= ETHER_ETH_CONTROL_RESET;
+ writel(reg_val, dwmac->reg + REG_ETHER_CONTROL);
+
+ return 0;
+}
+
+static int visconti_eth_clock_probe(struct platform_device *pdev,
+ struct plat_stmmacenet_data *plat_dat)
+{
+ struct visconti_eth *dwmac = plat_dat->bsp_priv;
+ int err;
+
+ dwmac->phy_ref_clk = devm_clk_get(&pdev->dev, "phy_ref_clk");
+ if (IS_ERR(dwmac->phy_ref_clk))
+ return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->phy_ref_clk),
+ "phy_ref_clk clock not found.\n");
+
+ err = clk_prepare_enable(dwmac->phy_ref_clk);
+ if (err < 0) {
+ dev_err(&pdev->dev, "failed to enable phy_ref clock: %d\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+static int visconti_eth_clock_remove(struct platform_device *pdev)
+{
+ struct visconti_eth *dwmac = get_stmmac_bsp_priv(&pdev->dev);
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct stmmac_priv *priv = netdev_priv(ndev);
+
+ clk_disable_unprepare(dwmac->phy_ref_clk);
+ clk_disable_unprepare(priv->plat->stmmac_clk);
+
+ return 0;
+}
+
+static int visconti_eth_dwmac_probe(struct platform_device *pdev)
+{
+ struct plat_stmmacenet_data *plat_dat;
+ struct stmmac_resources stmmac_res;
+ struct visconti_eth *dwmac;
+ int ret;
+
+ ret = stmmac_get_platform_resources(pdev, &stmmac_res);
+ if (ret)
+ return ret;
+
+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+ dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
+ if (!dwmac) {
+ ret = -ENOMEM;
+ goto remove_config;
+ }
+
+ spin_lock_init(&dwmac->lock);
+ dwmac->reg = stmmac_res.addr;
+ dwmac->dev = &pdev->dev;
+ plat_dat->bsp_priv = dwmac;
+ plat_dat->fix_mac_speed = visconti_eth_fix_mac_speed;
+
+ ret = visconti_eth_clock_probe(pdev, plat_dat);
+ if (ret)
+ goto remove_config;
+
+ visconti_eth_init_hw(pdev, plat_dat);
+
+ plat_dat->dma_cfg->aal = 1;
+
+ ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
+ if (ret)
+ goto remove;
+
+ return ret;
+
+remove:
+ visconti_eth_clock_remove(pdev);
+remove_config:
+ stmmac_remove_config_dt(pdev, plat_dat);
+
+ return ret;
+}
+
+static int visconti_eth_dwmac_remove(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct stmmac_priv *priv = netdev_priv(ndev);
+ int err;
+
+ err = stmmac_pltfr_remove(pdev);
+ if (err < 0)
+ dev_err(&pdev->dev, "failed to remove platform: %d\n", err);
+
+ err = visconti_eth_clock_remove(pdev);
+ if (err < 0)
+ dev_err(&pdev->dev, "failed to remove clock: %d\n", err);
+
+ stmmac_remove_config_dt(pdev, priv->plat);
+
+ return err;
+}
+
+static const struct of_device_id visconti_eth_dwmac_match[] = {
+ { .compatible = "toshiba,visconti-dwmac" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, visconti_eth_dwmac_match);
+
+static struct platform_driver visconti_eth_dwmac_driver = {
+ .probe = visconti_eth_dwmac_probe,
+ .remove = visconti_eth_dwmac_remove,
+ .driver = {
+ .name = "visconti-eth-dwmac",
+ .of_match_table = visconti_eth_dwmac_match,
+ },
+};
+module_platform_driver(visconti_eth_dwmac_driver);
+
+MODULE_AUTHOR("Toshiba");
+MODULE_DESCRIPTION("Toshiba Visconti Ethernet DWMAC glue driver");
+MODULE_AUTHOR("Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp");
+MODULE_LICENSE("GPL v2");