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().
  ...

1 files changed, 623 insertions, 0 deletions

diff --git a/drivers/ata/ahci_tegra.c b/drivers/ata/ahci_tegra.c
new file mode 100644
index 000000000..4fb94db12
--- /dev/null
+++ b/drivers/ata/ahci_tegra.c
@@ -0,0 +1,623 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * drivers/ata/ahci_tegra.c
+ *
+ * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Author:
+ *	Mikko Perttunen <mperttunen@nvidia.com>
+ */
+
+#include <linux/ahci_platform.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
+
+#include <soc/tegra/fuse.h>
+#include <soc/tegra/pmc.h>
+
+#include "ahci.h"
+
+#define DRV_NAME "tegra-ahci"
+
+#define SATA_CONFIGURATION_0				0x180
+#define SATA_CONFIGURATION_0_EN_FPCI			BIT(0)
+#define SATA_CONFIGURATION_0_CLK_OVERRIDE			BIT(31)
+
+#define SCFG_OFFSET					0x1000
+
+#define T_SATA0_CFG_1					0x04
+#define T_SATA0_CFG_1_IO_SPACE				BIT(0)
+#define T_SATA0_CFG_1_MEMORY_SPACE			BIT(1)
+#define T_SATA0_CFG_1_BUS_MASTER			BIT(2)
+#define T_SATA0_CFG_1_SERR				BIT(8)
+
+#define T_SATA0_CFG_9					0x24
+#define T_SATA0_CFG_9_BASE_ADDRESS			0x40020000
+
+#define SATA_FPCI_BAR5					0x94
+#define SATA_FPCI_BAR5_START_MASK			(0xfffffff << 4)
+#define SATA_FPCI_BAR5_START				(0x0040020 << 4)
+#define SATA_FPCI_BAR5_ACCESS_TYPE			(0x1)
+
+#define SATA_INTR_MASK					0x188
+#define SATA_INTR_MASK_IP_INT_MASK			BIT(16)
+
+#define T_SATA0_CFG_35					0x94
+#define T_SATA0_CFG_35_IDP_INDEX_MASK			(0x7ff << 2)
+#define T_SATA0_CFG_35_IDP_INDEX			(0x2a << 2)
+
+#define T_SATA0_AHCI_IDP1				0x98
+#define T_SATA0_AHCI_IDP1_DATA				(0x400040)
+
+#define T_SATA0_CFG_PHY_1				0x12c
+#define T_SATA0_CFG_PHY_1_PADS_IDDQ_EN			BIT(23)
+#define T_SATA0_CFG_PHY_1_PAD_PLL_IDDQ_EN		BIT(22)
+
+#define T_SATA0_NVOOB                                   0x114
+#define T_SATA0_NVOOB_SQUELCH_FILTER_MODE_MASK          (0x3 << 24)
+#define T_SATA0_NVOOB_SQUELCH_FILTER_MODE               (0x1 << 24)
+#define T_SATA0_NVOOB_SQUELCH_FILTER_LENGTH_MASK        (0x3 << 26)
+#define T_SATA0_NVOOB_SQUELCH_FILTER_LENGTH             (0x3 << 26)
+
+#define T_SATA_CFG_PHY_0                                0x120
+#define T_SATA_CFG_PHY_0_USE_7BIT_ALIGN_DET_FOR_SPD     BIT(11)
+#define T_SATA_CFG_PHY_0_MASK_SQUELCH                   BIT(24)
+
+#define T_SATA0_CFG2NVOOB_2				0x134
+#define T_SATA0_CFG2NVOOB_2_COMWAKE_IDLE_CNT_LOW_MASK	(0x1ff << 18)
+#define T_SATA0_CFG2NVOOB_2_COMWAKE_IDLE_CNT_LOW	(0xc << 18)
+
+#define T_SATA0_AHCI_HBA_CAP_BKDR			0x300
+#define T_SATA0_AHCI_HBA_CAP_BKDR_PARTIAL_ST_CAP	BIT(13)
+#define T_SATA0_AHCI_HBA_CAP_BKDR_SLUMBER_ST_CAP	BIT(14)
+#define T_SATA0_AHCI_HBA_CAP_BKDR_SALP			BIT(26)
+#define T_SATA0_AHCI_HBA_CAP_BKDR_SUPP_PM		BIT(17)
+#define T_SATA0_AHCI_HBA_CAP_BKDR_SNCQ			BIT(30)
+
+#define T_SATA0_BKDOOR_CC				0x4a4
+#define T_SATA0_BKDOOR_CC_CLASS_CODE_MASK		(0xffff << 16)
+#define T_SATA0_BKDOOR_CC_CLASS_CODE			(0x0106 << 16)
+#define T_SATA0_BKDOOR_CC_PROG_IF_MASK			(0xff << 8)
+#define T_SATA0_BKDOOR_CC_PROG_IF			(0x01 << 8)
+
+#define T_SATA0_CFG_SATA				0x54c
+#define T_SATA0_CFG_SATA_BACKDOOR_PROG_IF_EN		BIT(12)
+
+#define T_SATA0_CFG_MISC				0x550
+
+#define T_SATA0_INDEX					0x680
+
+#define T_SATA0_CHX_PHY_CTRL1_GEN1			0x690
+#define T_SATA0_CHX_PHY_CTRL1_GEN1_TX_AMP_MASK		0xff
+#define T_SATA0_CHX_PHY_CTRL1_GEN1_TX_AMP_SHIFT		0
+#define T_SATA0_CHX_PHY_CTRL1_GEN1_TX_PEAK_MASK		(0xff << 8)
+#define T_SATA0_CHX_PHY_CTRL1_GEN1_TX_PEAK_SHIFT	8
+
+#define T_SATA0_CHX_PHY_CTRL1_GEN2			0x694
+#define T_SATA0_CHX_PHY_CTRL1_GEN2_TX_AMP_MASK		0xff
+#define T_SATA0_CHX_PHY_CTRL1_GEN2_TX_AMP_SHIFT		0
+#define T_SATA0_CHX_PHY_CTRL1_GEN2_TX_PEAK_MASK		(0xff << 12)
+#define T_SATA0_CHX_PHY_CTRL1_GEN2_TX_PEAK_SHIFT	12
+
+#define T_SATA0_CHX_PHY_CTRL2				0x69c
+#define T_SATA0_CHX_PHY_CTRL2_CDR_CNTL_GEN1		0x23
+
+#define T_SATA0_CHX_PHY_CTRL11				0x6d0
+#define T_SATA0_CHX_PHY_CTRL11_GEN2_RX_EQ		(0x2800 << 16)
+
+#define T_SATA0_CHX_PHY_CTRL17_0			0x6e8
+#define T_SATA0_CHX_PHY_CTRL17_0_RX_EQ_CTRL_L_GEN1	0x55010000
+#define T_SATA0_CHX_PHY_CTRL18_0			0x6ec
+#define T_SATA0_CHX_PHY_CTRL18_0_RX_EQ_CTRL_L_GEN2	0x55010000
+#define T_SATA0_CHX_PHY_CTRL20_0			0x6f4
+#define T_SATA0_CHX_PHY_CTRL20_0_RX_EQ_CTRL_H_GEN1	0x1
+#define T_SATA0_CHX_PHY_CTRL21_0			0x6f8
+#define T_SATA0_CHX_PHY_CTRL21_0_RX_EQ_CTRL_H_GEN2	0x1
+
+/* AUX Registers */
+#define SATA_AUX_MISC_CNTL_1_0				0x8
+#define SATA_AUX_MISC_CNTL_1_0_DEVSLP_OVERRIDE		BIT(17)
+#define SATA_AUX_MISC_CNTL_1_0_SDS_SUPPORT		BIT(13)
+#define SATA_AUX_MISC_CNTL_1_0_DESO_SUPPORT		BIT(15)
+
+#define SATA_AUX_RX_STAT_INT_0				0xc
+#define SATA_AUX_RX_STAT_INT_0_SATA_DEVSLP		BIT(7)
+
+#define SATA_AUX_SPARE_CFG0_0				0x18
+#define SATA_AUX_SPARE_CFG0_0_MDAT_TIMER_AFTER_PG_VALID	BIT(14)
+
+#define FUSE_SATA_CALIB					0x124
+#define FUSE_SATA_CALIB_MASK				0x3
+
+struct sata_pad_calibration {
+	u8 gen1_tx_amp;
+	u8 gen1_tx_peak;
+	u8 gen2_tx_amp;
+	u8 gen2_tx_peak;
+};
+
+static const struct sata_pad_calibration tegra124_pad_calibration[] = {
+	{0x18, 0x04, 0x18, 0x0a},
+	{0x0e, 0x04, 0x14, 0x0a},
+	{0x0e, 0x07, 0x1a, 0x0e},
+	{0x14, 0x0e, 0x1a, 0x0e},
+};
+
+struct tegra_ahci_ops {
+	int (*init)(struct ahci_host_priv *hpriv);
+};
+
+struct tegra_ahci_regs {
+	unsigned int nvoob_comma_cnt_mask;
+	unsigned int nvoob_comma_cnt_val;
+};
+
+struct tegra_ahci_soc {
+	const char *const		*supply_names;
+	u32				num_supplies;
+	bool				supports_devslp;
+	bool				has_sata_oob_rst;
+	const struct tegra_ahci_ops	*ops;
+	const struct tegra_ahci_regs	*regs;
+};
+
+struct tegra_ahci_priv {
+	struct platform_device	   *pdev;
+	void __iomem		   *sata_regs;
+	void __iomem		   *sata_aux_regs;
+	struct reset_control	   *sata_rst;
+	struct reset_control	   *sata_oob_rst;
+	struct reset_control	   *sata_cold_rst;
+	/* Needs special handling, cannot use ahci_platform */
+	struct clk		   *sata_clk;
+	struct regulator_bulk_data *supplies;
+	const struct tegra_ahci_soc *soc;
+};
+
+static void tegra_ahci_handle_quirks(struct ahci_host_priv *hpriv)
+{
+	struct tegra_ahci_priv *tegra = hpriv->plat_data;
+	u32 val;
+
+	if (tegra->sata_aux_regs && !tegra->soc->supports_devslp) {
+		val = readl(tegra->sata_aux_regs + SATA_AUX_MISC_CNTL_1_0);
+		val &= ~SATA_AUX_MISC_CNTL_1_0_SDS_SUPPORT;
+		writel(val, tegra->sata_aux_regs + SATA_AUX_MISC_CNTL_1_0);
+	}
+}
+
+static int tegra124_ahci_init(struct ahci_host_priv *hpriv)
+{
+	struct tegra_ahci_priv *tegra = hpriv->plat_data;
+	struct sata_pad_calibration calib;
+	int ret;
+	u32 val;
+
+	/* Pad calibration */
+	ret = tegra_fuse_readl(FUSE_SATA_CALIB, &val);
+	if (ret)
+		return ret;
+
+	calib = tegra124_pad_calibration[val & FUSE_SATA_CALIB_MASK];
+
+	writel(BIT(0), tegra->sata_regs + SCFG_OFFSET + T_SATA0_INDEX);
+
+	val = readl(tegra->sata_regs +
+		    SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL1_GEN1);
+	val &= ~T_SATA0_CHX_PHY_CTRL1_GEN1_TX_AMP_MASK;
+	val &= ~T_SATA0_CHX_PHY_CTRL1_GEN1_TX_PEAK_MASK;
+	val |= calib.gen1_tx_amp << T_SATA0_CHX_PHY_CTRL1_GEN1_TX_AMP_SHIFT;
+	val |= calib.gen1_tx_peak << T_SATA0_CHX_PHY_CTRL1_GEN1_TX_PEAK_SHIFT;
+	writel(val, tegra->sata_regs + SCFG_OFFSET +
+	       T_SATA0_CHX_PHY_CTRL1_GEN1);
+
+	val = readl(tegra->sata_regs +
+		    SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL1_GEN2);
+	val &= ~T_SATA0_CHX_PHY_CTRL1_GEN2_TX_AMP_MASK;
+	val &= ~T_SATA0_CHX_PHY_CTRL1_GEN2_TX_PEAK_MASK;
+	val |= calib.gen2_tx_amp << T_SATA0_CHX_PHY_CTRL1_GEN1_TX_AMP_SHIFT;
+	val |= calib.gen2_tx_peak << T_SATA0_CHX_PHY_CTRL1_GEN1_TX_PEAK_SHIFT;
+	writel(val, tegra->sata_regs + SCFG_OFFSET +
+	       T_SATA0_CHX_PHY_CTRL1_GEN2);
+
+	writel(T_SATA0_CHX_PHY_CTRL11_GEN2_RX_EQ,
+	       tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL11);
+	writel(T_SATA0_CHX_PHY_CTRL2_CDR_CNTL_GEN1,
+	       tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL2);
+
+	writel(0, tegra->sata_regs + SCFG_OFFSET + T_SATA0_INDEX);
+
+	return 0;
+}
+
+static int tegra_ahci_power_on(struct ahci_host_priv *hpriv)
+{
+	struct tegra_ahci_priv *tegra = hpriv->plat_data;
+	int ret;
+
+	ret = regulator_bulk_enable(tegra->soc->num_supplies,
+				    tegra->supplies);
+	if (ret)
+		return ret;
+
+	if (!tegra->pdev->dev.pm_domain) {
+		ret = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_SATA,
+							tegra->sata_clk,
+							tegra->sata_rst);
+		if (ret)
+			goto disable_regulators;
+	}
+
+	reset_control_assert(tegra->sata_oob_rst);
+	reset_control_assert(tegra->sata_cold_rst);
+
+	ret = ahci_platform_enable_resources(hpriv);
+	if (ret)
+		goto disable_power;
+
+	reset_control_deassert(tegra->sata_cold_rst);
+	reset_control_deassert(tegra->sata_oob_rst);
+
+	return 0;
+
+disable_power:
+	clk_disable_unprepare(tegra->sata_clk);
+
+	if (!tegra->pdev->dev.pm_domain)
+		tegra_powergate_power_off(TEGRA_POWERGATE_SATA);
+
+disable_regulators:
+	regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
+
+	return ret;
+}
+
+static void tegra_ahci_power_off(struct ahci_host_priv *hpriv)
+{
+	struct tegra_ahci_priv *tegra = hpriv->plat_data;
+
+	ahci_platform_disable_resources(hpriv);
+
+	reset_control_assert(tegra->sata_rst);
+	reset_control_assert(tegra->sata_oob_rst);
+	reset_control_assert(tegra->sata_cold_rst);
+
+	clk_disable_unprepare(tegra->sata_clk);
+	if (!tegra->pdev->dev.pm_domain)
+		tegra_powergate_power_off(TEGRA_POWERGATE_SATA);
+
+	regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
+}
+
+static int tegra_ahci_controller_init(struct ahci_host_priv *hpriv)
+{
+	struct tegra_ahci_priv *tegra = hpriv->plat_data;
+	int ret;
+	u32 val;
+
+	ret = tegra_ahci_power_on(hpriv);
+	if (ret) {
+		dev_err(&tegra->pdev->dev,
+			"failed to power on AHCI controller: %d\n", ret);
+		return ret;
+	}
+
+	/*
+	 * Program the following SATA IPFS registers to allow SW accesses to
+	 * SATA's MMIO register range.
+	 */
+	val = readl(tegra->sata_regs + SATA_FPCI_BAR5);
+	val &= ~(SATA_FPCI_BAR5_START_MASK | SATA_FPCI_BAR5_ACCESS_TYPE);
+	val |= SATA_FPCI_BAR5_START | SATA_FPCI_BAR5_ACCESS_TYPE;
+	writel(val, tegra->sata_regs + SATA_FPCI_BAR5);
+
+	/* Program the following SATA IPFS register to enable the SATA */
+	val = readl(tegra->sata_regs + SATA_CONFIGURATION_0);
+	val |= SATA_CONFIGURATION_0_EN_FPCI;
+	writel(val, tegra->sata_regs + SATA_CONFIGURATION_0);
+
+	/* Electrical settings for better link stability */
+	val = T_SATA0_CHX_PHY_CTRL17_0_RX_EQ_CTRL_L_GEN1;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL17_0);
+	val = T_SATA0_CHX_PHY_CTRL18_0_RX_EQ_CTRL_L_GEN2;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL18_0);
+	val = T_SATA0_CHX_PHY_CTRL20_0_RX_EQ_CTRL_H_GEN1;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL20_0);
+	val = T_SATA0_CHX_PHY_CTRL21_0_RX_EQ_CTRL_H_GEN2;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL21_0);
+
+	/* For SQUELCH Filter & Gen3 drive getting detected as Gen1 drive */
+
+	val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA_CFG_PHY_0);
+	val |= T_SATA_CFG_PHY_0_MASK_SQUELCH;
+	val &= ~T_SATA_CFG_PHY_0_USE_7BIT_ALIGN_DET_FOR_SPD;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA_CFG_PHY_0);
+
+	val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_NVOOB);
+	val &= ~(tegra->soc->regs->nvoob_comma_cnt_mask |
+		 T_SATA0_NVOOB_SQUELCH_FILTER_LENGTH_MASK |
+		 T_SATA0_NVOOB_SQUELCH_FILTER_MODE_MASK);
+	val |= (tegra->soc->regs->nvoob_comma_cnt_val |
+		T_SATA0_NVOOB_SQUELCH_FILTER_LENGTH |
+		T_SATA0_NVOOB_SQUELCH_FILTER_MODE);
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_NVOOB);
+
+	/*
+	 * Change CFG2NVOOB_2_COMWAKE_IDLE_CNT_LOW from 83.3 ns to 58.8ns
+	 */
+	val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG2NVOOB_2);
+	val &= ~T_SATA0_CFG2NVOOB_2_COMWAKE_IDLE_CNT_LOW_MASK;
+	val |= T_SATA0_CFG2NVOOB_2_COMWAKE_IDLE_CNT_LOW;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG2NVOOB_2);
+
+	if (tegra->soc->ops && tegra->soc->ops->init)
+		tegra->soc->ops->init(hpriv);
+
+	/*
+	 * Program the following SATA configuration registers to
+	 * initialize SATA
+	 */
+	val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_1);
+	val |= (T_SATA0_CFG_1_IO_SPACE | T_SATA0_CFG_1_MEMORY_SPACE |
+		T_SATA0_CFG_1_BUS_MASTER | T_SATA0_CFG_1_SERR);
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_1);
+	val = T_SATA0_CFG_9_BASE_ADDRESS;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_9);
+
+	/* Program Class Code and Programming interface for SATA */
+	val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_SATA);
+	val |= T_SATA0_CFG_SATA_BACKDOOR_PROG_IF_EN;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_SATA);
+
+	val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_BKDOOR_CC);
+	val &=
+	    ~(T_SATA0_BKDOOR_CC_CLASS_CODE_MASK |
+	      T_SATA0_BKDOOR_CC_PROG_IF_MASK);
+	val |= T_SATA0_BKDOOR_CC_CLASS_CODE | T_SATA0_BKDOOR_CC_PROG_IF;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_BKDOOR_CC);
+
+	val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_SATA);
+	val &= ~T_SATA0_CFG_SATA_BACKDOOR_PROG_IF_EN;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_SATA);
+
+	/* Enabling LPM capabilities through Backdoor Programming */
+	val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_AHCI_HBA_CAP_BKDR);
+	val |= (T_SATA0_AHCI_HBA_CAP_BKDR_PARTIAL_ST_CAP |
+		T_SATA0_AHCI_HBA_CAP_BKDR_SLUMBER_ST_CAP |
+		T_SATA0_AHCI_HBA_CAP_BKDR_SALP |
+		T_SATA0_AHCI_HBA_CAP_BKDR_SUPP_PM);
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_AHCI_HBA_CAP_BKDR);
+
+	/* SATA Second Level Clock Gating configuration
+	 * Enabling Gating of Tx/Rx clocks and driving Pad IDDQ and Lane
+	 * IDDQ Signals
+	 */
+	val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_35);
+	val &= ~T_SATA0_CFG_35_IDP_INDEX_MASK;
+	val |= T_SATA0_CFG_35_IDP_INDEX;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_35);
+
+	val = T_SATA0_AHCI_IDP1_DATA;
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_AHCI_IDP1);
+
+	val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_PHY_1);
+	val |= (T_SATA0_CFG_PHY_1_PADS_IDDQ_EN |
+		T_SATA0_CFG_PHY_1_PAD_PLL_IDDQ_EN);
+	writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_PHY_1);
+
+	/* Enabling IPFS Clock Gating */
+	val = readl(tegra->sata_regs + SATA_CONFIGURATION_0);
+	val &= ~SATA_CONFIGURATION_0_CLK_OVERRIDE;
+	writel(val, tegra->sata_regs + SATA_CONFIGURATION_0);
+
+	tegra_ahci_handle_quirks(hpriv);
+
+	/* Unmask SATA interrupts */
+
+	val = readl(tegra->sata_regs + SATA_INTR_MASK);
+	val |= SATA_INTR_MASK_IP_INT_MASK;
+	writel(val, tegra->sata_regs + SATA_INTR_MASK);
+
+	return 0;
+}
+
+static void tegra_ahci_controller_deinit(struct ahci_host_priv *hpriv)
+{
+	tegra_ahci_power_off(hpriv);
+}
+
+static void tegra_ahci_host_stop(struct ata_host *host)
+{
+	struct ahci_host_priv *hpriv = host->private_data;
+
+	tegra_ahci_controller_deinit(hpriv);
+}
+
+static struct ata_port_operations ahci_tegra_port_ops = {
+	.inherits	= &ahci_ops,
+	.host_stop	= tegra_ahci_host_stop,
+};
+
+static const struct ata_port_info ahci_tegra_port_info = {
+	.flags		= AHCI_FLAG_COMMON | ATA_FLAG_NO_DIPM,
+	.pio_mask	= ATA_PIO4,
+	.udma_mask	= ATA_UDMA6,
+	.port_ops	= &ahci_tegra_port_ops,
+};
+
+static const char *const tegra124_supply_names[] = {
+	"avdd", "hvdd", "vddio", "target-5v", "target-12v"
+};
+
+static const struct tegra_ahci_ops tegra124_ahci_ops = {
+	.init = tegra124_ahci_init,
+};
+
+static const struct tegra_ahci_regs tegra124_ahci_regs = {
+	.nvoob_comma_cnt_mask = GENMASK(30, 28),
+	.nvoob_comma_cnt_val = (7 << 28),
+};
+
+static const struct tegra_ahci_soc tegra124_ahci_soc = {
+	.supply_names = tegra124_supply_names,
+	.num_supplies = ARRAY_SIZE(tegra124_supply_names),
+	.supports_devslp = false,
+	.has_sata_oob_rst = true,
+	.ops = &tegra124_ahci_ops,
+	.regs = &tegra124_ahci_regs,
+};
+
+static const struct tegra_ahci_soc tegra210_ahci_soc = {
+	.supports_devslp = false,
+	.has_sata_oob_rst = true,
+	.regs = &tegra124_ahci_regs,
+};
+
+static const struct tegra_ahci_regs tegra186_ahci_regs = {
+	.nvoob_comma_cnt_mask = GENMASK(23, 16),
+	.nvoob_comma_cnt_val = (7 << 16),
+};
+
+static const struct tegra_ahci_soc tegra186_ahci_soc = {
+	.supports_devslp = false,
+	.has_sata_oob_rst = false,
+	.regs = &tegra186_ahci_regs,
+};
+
+static const struct of_device_id tegra_ahci_of_match[] = {
+	{
+		.compatible = "nvidia,tegra124-ahci",
+		.data = &tegra124_ahci_soc
+	},
+	{
+		.compatible = "nvidia,tegra210-ahci",
+		.data = &tegra210_ahci_soc
+	},
+	{
+		.compatible = "nvidia,tegra186-ahci",
+		.data = &tegra186_ahci_soc
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, tegra_ahci_of_match);
+
+static struct scsi_host_template ahci_platform_sht = {
+	AHCI_SHT(DRV_NAME),
+};
+
+static int tegra_ahci_probe(struct platform_device *pdev)
+{
+	struct ahci_host_priv *hpriv;
+	struct tegra_ahci_priv *tegra;
+	struct resource *res;
+	int ret;
+
+	hpriv = ahci_platform_get_resources(pdev, 0);
+	if (IS_ERR(hpriv))
+		return PTR_ERR(hpriv);
+
+	tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);
+	if (!tegra)
+		return -ENOMEM;
+
+	hpriv->plat_data = tegra;
+
+	tegra->pdev = pdev;
+	tegra->soc = of_device_get_match_data(&pdev->dev);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	tegra->sata_regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(tegra->sata_regs))
+		return PTR_ERR(tegra->sata_regs);
+
+	/*
+	 * AUX registers is optional.
+	 */
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+	if (res) {
+		tegra->sata_aux_regs = devm_ioremap_resource(&pdev->dev, res);
+		if (IS_ERR(tegra->sata_aux_regs))
+			return PTR_ERR(tegra->sata_aux_regs);
+	}
+
+	tegra->sata_rst = devm_reset_control_get(&pdev->dev, "sata");
+	if (IS_ERR(tegra->sata_rst)) {
+		dev_err(&pdev->dev, "Failed to get sata reset\n");
+		return PTR_ERR(tegra->sata_rst);
+	}
+
+	if (tegra->soc->has_sata_oob_rst) {
+		tegra->sata_oob_rst = devm_reset_control_get(&pdev->dev,
+							     "sata-oob");
+		if (IS_ERR(tegra->sata_oob_rst)) {
+			dev_err(&pdev->dev, "Failed to get sata-oob reset\n");
+			return PTR_ERR(tegra->sata_oob_rst);
+		}
+	}
+
+	tegra->sata_cold_rst = devm_reset_control_get(&pdev->dev, "sata-cold");
+	if (IS_ERR(tegra->sata_cold_rst)) {
+		dev_err(&pdev->dev, "Failed to get sata-cold reset\n");
+		return PTR_ERR(tegra->sata_cold_rst);
+	}
+
+	tegra->sata_clk = devm_clk_get(&pdev->dev, "sata");
+	if (IS_ERR(tegra->sata_clk)) {
+		dev_err(&pdev->dev, "Failed to get sata clock\n");
+		return PTR_ERR(tegra->sata_clk);
+	}
+
+	tegra->supplies = devm_kcalloc(&pdev->dev,
+				       tegra->soc->num_supplies,
+				       sizeof(*tegra->supplies), GFP_KERNEL);
+	if (!tegra->supplies)
+		return -ENOMEM;
+
+	regulator_bulk_set_supply_names(tegra->supplies,
+					tegra->soc->supply_names,
+					tegra->soc->num_supplies);
+
+	ret = devm_regulator_bulk_get(&pdev->dev,
+				      tegra->soc->num_supplies,
+				      tegra->supplies);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to get regulators\n");
+		return ret;
+	}
+
+	ret = tegra_ahci_controller_init(hpriv);
+	if (ret)
+		return ret;
+
+	ret = ahci_platform_init_host(pdev, hpriv, &ahci_tegra_port_info,
+				      &ahci_platform_sht);
+	if (ret)
+		goto deinit_controller;
+
+	return 0;
+
+deinit_controller:
+	tegra_ahci_controller_deinit(hpriv);
+
+	return ret;
+};
+
+static struct platform_driver tegra_ahci_driver = {
+	.probe = tegra_ahci_probe,
+	.remove = ata_platform_remove_one,
+	.driver = {
+		.name = DRV_NAME,
+		.of_match_table = tegra_ahci_of_match,
+	},
+	/* LP0 suspend support not implemented */
+};
+module_platform_driver(tegra_ahci_driver);
+
+MODULE_AUTHOR("Mikko Perttunen <mperttunen@nvidia.com>");
+MODULE_DESCRIPTION("Tegra AHCI SATA driver");
+MODULE_LICENSE("GPL v2");