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, 551 insertions, 0 deletions

diff --git a/drivers/ata/pata_atp867x.c b/drivers/ata/pata_atp867x.c
new file mode 100644
index 000000000..779d66041
--- /dev/null
+++ b/drivers/ata/pata_atp867x.c
@@ -0,0 +1,551 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * pata_atp867x.c - ARTOP 867X 64bit 4-channel UDMA133 ATA controller driver
+ *
+ *	(C) 2009 Google Inc. John(Jung-Ik) Lee <jilee@google.com>
+ *
+ * Per Atp867 data sheet rev 1.2, Acard.
+ * Based in part on early ide code from
+ *	2003-2004 by Eric Uhrhane, Google, Inc.
+ *
+ * TODO:
+ *   1. RAID features [comparison, XOR, striping, mirroring, etc.]
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/gfp.h>
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+
+#define	DRV_NAME	"pata_atp867x"
+#define	DRV_VERSION	"0.7.5"
+
+/*
+ * IO Registers
+ * Note that all runtime hot priv ports are cached in ap private_data
+ */
+
+enum {
+	ATP867X_IO_CHANNEL_OFFSET	= 0x10,
+
+	/*
+	 * IO Register Bitfields
+	 */
+
+	ATP867X_IO_PIOSPD_ACTIVE_SHIFT	= 4,
+	ATP867X_IO_PIOSPD_RECOVER_SHIFT	= 0,
+
+	ATP867X_IO_DMAMODE_MSTR_SHIFT	= 0,
+	ATP867X_IO_DMAMODE_MSTR_MASK	= 0x07,
+	ATP867X_IO_DMAMODE_SLAVE_SHIFT	= 4,
+	ATP867X_IO_DMAMODE_SLAVE_MASK	= 0x70,
+
+	ATP867X_IO_DMAMODE_UDMA_6	= 0x07,
+	ATP867X_IO_DMAMODE_UDMA_5	= 0x06,
+	ATP867X_IO_DMAMODE_UDMA_4	= 0x05,
+	ATP867X_IO_DMAMODE_UDMA_3	= 0x04,
+	ATP867X_IO_DMAMODE_UDMA_2	= 0x03,
+	ATP867X_IO_DMAMODE_UDMA_1	= 0x02,
+	ATP867X_IO_DMAMODE_UDMA_0	= 0x01,
+	ATP867X_IO_DMAMODE_DISABLE	= 0x00,
+
+	ATP867X_IO_SYS_INFO_66MHZ	= 0x04,
+	ATP867X_IO_SYS_INFO_SLOW_UDMA5	= 0x02,
+	ATP867X_IO_SYS_MASK_RESERVED	= (~0xf1),
+
+	ATP867X_IO_PORTSPD_VAL		= 0x1143,
+	ATP867X_PREREAD_VAL		= 0x0200,
+
+	ATP867X_NUM_PORTS		= 4,
+	ATP867X_BAR_IOBASE		= 0,
+	ATP867X_BAR_ROMBASE		= 6,
+};
+
+#define ATP867X_IOBASE(ap)		((ap)->host->iomap[0])
+#define ATP867X_SYS_INFO(ap)		(0x3F + ATP867X_IOBASE(ap))
+
+#define ATP867X_IO_PORTBASE(ap, port)	(0x00 + ATP867X_IOBASE(ap) + \
+					(port) * ATP867X_IO_CHANNEL_OFFSET)
+#define ATP867X_IO_DMABASE(ap, port)	(0x40 + \
+					ATP867X_IO_PORTBASE((ap), (port)))
+
+#define ATP867X_IO_STATUS(ap, port)	(0x07 + \
+					ATP867X_IO_PORTBASE((ap), (port)))
+#define ATP867X_IO_ALTSTATUS(ap, port)	(0x0E + \
+					ATP867X_IO_PORTBASE((ap), (port)))
+
+/*
+ * hot priv ports
+ */
+#define ATP867X_IO_MSTRPIOSPD(ap, port)	(0x08 + \
+					ATP867X_IO_DMABASE((ap), (port)))
+#define ATP867X_IO_SLAVPIOSPD(ap, port)	(0x09 + \
+					ATP867X_IO_DMABASE((ap), (port)))
+#define ATP867X_IO_8BPIOSPD(ap, port)	(0x0A + \
+					ATP867X_IO_DMABASE((ap), (port)))
+#define ATP867X_IO_DMAMODE(ap, port)	(0x0B + \
+					ATP867X_IO_DMABASE((ap), (port)))
+
+#define ATP867X_IO_PORTSPD(ap, port)	(0x4A + \
+					ATP867X_IO_PORTBASE((ap), (port)))
+#define ATP867X_IO_PREREAD(ap, port)	(0x4C + \
+					ATP867X_IO_PORTBASE((ap), (port)))
+
+struct atp867x_priv {
+	void __iomem *dma_mode;
+	void __iomem *mstr_piospd;
+	void __iomem *slave_piospd;
+	void __iomem *eightb_piospd;
+	int		pci66mhz;
+};
+
+static void atp867x_set_dmamode(struct ata_port *ap, struct ata_device *adev)
+{
+	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);
+	struct atp867x_priv *dp = ap->private_data;
+	u8 speed = adev->dma_mode;
+	u8 b;
+	u8 mode = speed - XFER_UDMA_0 + 1;
+
+	/*
+	 * Doc 6.6.9: decrease the udma mode value by 1 for safer UDMA speed
+	 * on 66MHz bus
+	 *   rev-A: UDMA_1~4 (5, 6 no change)
+	 *   rev-B: all UDMA modes
+	 *   UDMA_0 stays not to disable UDMA
+	 */
+	if (dp->pci66mhz && mode > ATP867X_IO_DMAMODE_UDMA_0  &&
+	   (pdev->device == PCI_DEVICE_ID_ARTOP_ATP867B ||
+	    mode < ATP867X_IO_DMAMODE_UDMA_5))
+		mode--;
+
+	b = ioread8(dp->dma_mode);
+	if (adev->devno & 1) {
+		b = (b & ~ATP867X_IO_DMAMODE_SLAVE_MASK) |
+			(mode << ATP867X_IO_DMAMODE_SLAVE_SHIFT);
+	} else {
+		b = (b & ~ATP867X_IO_DMAMODE_MSTR_MASK) |
+			(mode << ATP867X_IO_DMAMODE_MSTR_SHIFT);
+	}
+	iowrite8(b, dp->dma_mode);
+}
+
+static int atp867x_get_active_clocks_shifted(struct ata_port *ap,
+	unsigned int clk)
+{
+	struct atp867x_priv *dp = ap->private_data;
+	unsigned char clocks = clk;
+
+	/*
+	 * Doc 6.6.9: increase the clock value by 1 for safer PIO speed
+	 * on 66MHz bus
+	 */
+	if (dp->pci66mhz)
+		clocks++;
+
+	switch (clocks) {
+	case 0:
+		clocks = 1;
+		break;
+	case 1 ... 6:
+		break;
+	default:
+		ata_port_warn(ap, "ATP867X: active %dclk is invalid. "
+			"Using 12clk.\n", clk);
+		fallthrough;
+	case 9 ... 12:
+		clocks = 7;	/* 12 clk */
+		break;
+	case 7:
+	case 8:	/* default 8 clk */
+		clocks = 0;
+		goto active_clock_shift_done;
+	}
+
+active_clock_shift_done:
+	return clocks << ATP867X_IO_PIOSPD_ACTIVE_SHIFT;
+}
+
+static int atp867x_get_recover_clocks_shifted(struct ata_port *ap,
+					      unsigned int clk)
+{
+	unsigned char clocks = clk;
+
+	switch (clocks) {
+	case 0:
+		clocks = 1;
+		break;
+	case 1 ... 11:
+		break;
+	case 13:
+	case 14:
+		--clocks;	/* by the spec */
+		break;
+	case 15:
+		break;
+	default:
+		ata_port_warn(ap, "ATP867X: recover %dclk is invalid. "
+			"Using default 12clk.\n", clk);
+		fallthrough;
+	case 12:	/* default 12 clk */
+		clocks = 0;
+		break;
+	}
+
+	return clocks << ATP867X_IO_PIOSPD_RECOVER_SHIFT;
+}
+
+static void atp867x_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+	struct ata_device *peer = ata_dev_pair(adev);
+	struct atp867x_priv *dp = ap->private_data;
+	u8 speed = adev->pio_mode;
+	struct ata_timing t, p;
+	int T, UT;
+	u8 b;
+
+	T = 1000000000 / 33333;
+	UT = T / 4;
+
+	ata_timing_compute(adev, speed, &t, T, UT);
+	if (peer && peer->pio_mode) {
+		ata_timing_compute(peer, peer->pio_mode, &p, T, UT);
+		ata_timing_merge(&p, &t, &t, ATA_TIMING_8BIT);
+	}
+
+	b = ioread8(dp->dma_mode);
+	if (adev->devno & 1)
+		b = (b & ~ATP867X_IO_DMAMODE_SLAVE_MASK);
+	else
+		b = (b & ~ATP867X_IO_DMAMODE_MSTR_MASK);
+	iowrite8(b, dp->dma_mode);
+
+	b = atp867x_get_active_clocks_shifted(ap, t.active) |
+		atp867x_get_recover_clocks_shifted(ap, t.recover);
+
+	if (adev->devno & 1)
+		iowrite8(b, dp->slave_piospd);
+	else
+		iowrite8(b, dp->mstr_piospd);
+
+	b = atp867x_get_active_clocks_shifted(ap, t.act8b) |
+		atp867x_get_recover_clocks_shifted(ap, t.rec8b);
+
+	iowrite8(b, dp->eightb_piospd);
+}
+
+static int atp867x_cable_override(struct pci_dev *pdev)
+{
+	if (pdev->subsystem_vendor == PCI_VENDOR_ID_ARTOP &&
+		(pdev->subsystem_device == PCI_DEVICE_ID_ARTOP_ATP867A ||
+		 pdev->subsystem_device == PCI_DEVICE_ID_ARTOP_ATP867B)) {
+		return 1;
+	}
+	return 0;
+}
+
+static int atp867x_cable_detect(struct ata_port *ap)
+{
+	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+
+	if (atp867x_cable_override(pdev))
+		return ATA_CBL_PATA40_SHORT;
+
+	return ATA_CBL_PATA_UNK;
+}
+
+static struct scsi_host_template atp867x_sht = {
+	ATA_BMDMA_SHT(DRV_NAME),
+};
+
+static struct ata_port_operations atp867x_ops = {
+	.inherits		= &ata_bmdma_port_ops,
+	.cable_detect		= atp867x_cable_detect,
+	.set_piomode		= atp867x_set_piomode,
+	.set_dmamode		= atp867x_set_dmamode,
+};
+
+
+static void atp867x_check_res(struct pci_dev *pdev)
+{
+	int i;
+	unsigned long start, len;
+
+	/* Check the PCI resources for this channel are enabled */
+	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+		start = pci_resource_start(pdev, i);
+		len   = pci_resource_len(pdev, i);
+		dev_dbg(&pdev->dev, "ATP867X: resource start:len=%lx:%lx\n",
+			start, len);
+	}
+}
+
+static void atp867x_check_ports(struct ata_port *ap, int port)
+{
+	struct ata_ioports *ioaddr = &ap->ioaddr;
+	struct atp867x_priv *dp = ap->private_data;
+
+	ata_port_dbg(ap, "ATP867X: port[%d] addresses\n"
+		"  cmd_addr	=0x%lx, 0x%lx\n"
+		"  ctl_addr	=0x%lx, 0x%lx\n"
+		"  bmdma_addr	=0x%lx, 0x%lx\n"
+		"  data_addr	=0x%lx\n"
+		"  error_addr	=0x%lx\n"
+		"  feature_addr	=0x%lx\n"
+		"  nsect_addr	=0x%lx\n"
+		"  lbal_addr	=0x%lx\n"
+		"  lbam_addr	=0x%lx\n"
+		"  lbah_addr	=0x%lx\n"
+		"  device_addr	=0x%lx\n"
+		"  status_addr	=0x%lx\n"
+		"  command_addr	=0x%lx\n"
+		"  dp->dma_mode	=0x%lx\n"
+		"  dp->mstr_piospd	=0x%lx\n"
+		"  dp->slave_piospd	=0x%lx\n"
+		"  dp->eightb_piospd	=0x%lx\n"
+		"  dp->pci66mhz		=0x%lx\n",
+		port,
+		(unsigned long)ioaddr->cmd_addr,
+		(unsigned long)ATP867X_IO_PORTBASE(ap, port),
+		(unsigned long)ioaddr->ctl_addr,
+		(unsigned long)ATP867X_IO_ALTSTATUS(ap, port),
+		(unsigned long)ioaddr->bmdma_addr,
+		(unsigned long)ATP867X_IO_DMABASE(ap, port),
+		(unsigned long)ioaddr->data_addr,
+		(unsigned long)ioaddr->error_addr,
+		(unsigned long)ioaddr->feature_addr,
+		(unsigned long)ioaddr->nsect_addr,
+		(unsigned long)ioaddr->lbal_addr,
+		(unsigned long)ioaddr->lbam_addr,
+		(unsigned long)ioaddr->lbah_addr,
+		(unsigned long)ioaddr->device_addr,
+		(unsigned long)ioaddr->status_addr,
+		(unsigned long)ioaddr->command_addr,
+		(unsigned long)dp->dma_mode,
+		(unsigned long)dp->mstr_piospd,
+		(unsigned long)dp->slave_piospd,
+		(unsigned long)dp->eightb_piospd,
+		(unsigned long)dp->pci66mhz);
+}
+
+static int atp867x_set_priv(struct ata_port *ap)
+{
+	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+	struct atp867x_priv *dp;
+	int port = ap->port_no;
+
+	dp = ap->private_data =
+		devm_kzalloc(&pdev->dev, sizeof(*dp), GFP_KERNEL);
+	if (dp == NULL)
+		return -ENOMEM;
+
+	dp->dma_mode	 = ATP867X_IO_DMAMODE(ap, port);
+	dp->mstr_piospd	 = ATP867X_IO_MSTRPIOSPD(ap, port);
+	dp->slave_piospd = ATP867X_IO_SLAVPIOSPD(ap, port);
+	dp->eightb_piospd = ATP867X_IO_8BPIOSPD(ap, port);
+
+	dp->pci66mhz =
+		ioread8(ATP867X_SYS_INFO(ap)) & ATP867X_IO_SYS_INFO_66MHZ;
+
+	return 0;
+}
+
+static void atp867x_fixup(struct ata_host *host)
+{
+	struct pci_dev *pdev = to_pci_dev(host->dev);
+	struct ata_port *ap = host->ports[0];
+	int i;
+	u8 v;
+
+	/*
+	 * Broken BIOS might not set latency high enough
+	 */
+	pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &v);
+	if (v < 0x80) {
+		v = 0x80;
+		pci_write_config_byte(pdev, PCI_LATENCY_TIMER, v);
+		dev_dbg(&pdev->dev, "ATP867X: set latency timer to %d\n", v);
+	}
+
+	/*
+	 * init 8bit io ports speed(0aaarrrr) to 43h and
+	 * init udma modes of master/slave to 0/0(11h)
+	 */
+	for (i = 0; i < ATP867X_NUM_PORTS; i++)
+		iowrite16(ATP867X_IO_PORTSPD_VAL, ATP867X_IO_PORTSPD(ap, i));
+
+	/*
+	 * init PreREAD counts
+	 */
+	for (i = 0; i < ATP867X_NUM_PORTS; i++)
+		iowrite16(ATP867X_PREREAD_VAL, ATP867X_IO_PREREAD(ap, i));
+
+	v = ioread8(ATP867X_IOBASE(ap) + 0x28);
+	v &= 0xcf;	/* Enable INTA#: bit4=0 means enable */
+	v |= 0xc0;	/* Enable PCI burst, MRM & not immediate interrupts */
+	iowrite8(v, ATP867X_IOBASE(ap) + 0x28);
+
+	/*
+	 * Turn off the over clocked udma5 mode, only for Rev-B
+	 */
+	v = ioread8(ATP867X_SYS_INFO(ap));
+	v &= ATP867X_IO_SYS_MASK_RESERVED;
+	if (pdev->device == PCI_DEVICE_ID_ARTOP_ATP867B)
+		v |= ATP867X_IO_SYS_INFO_SLOW_UDMA5;
+	iowrite8(v, ATP867X_SYS_INFO(ap));
+}
+
+static int atp867x_ata_pci_sff_init_host(struct ata_host *host)
+{
+	struct device *gdev = host->dev;
+	struct pci_dev *pdev = to_pci_dev(gdev);
+	unsigned int mask = 0;
+	int i, rc;
+
+	/*
+	 * do not map rombase
+	 */
+	rc = pcim_iomap_regions(pdev, 1 << ATP867X_BAR_IOBASE, DRV_NAME);
+	if (rc == -EBUSY)
+		pcim_pin_device(pdev);
+	if (rc)
+		return rc;
+	host->iomap = pcim_iomap_table(pdev);
+
+	atp867x_check_res(pdev);
+
+	for (i = 0; i < PCI_STD_NUM_BARS; i++)
+		dev_dbg(gdev, "ATP867X: iomap[%d]=0x%p\n", i,
+			host->iomap[i]);
+
+	/*
+	 * request, iomap BARs and init port addresses accordingly
+	 */
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+		struct ata_ioports *ioaddr = &ap->ioaddr;
+
+		ioaddr->cmd_addr = ATP867X_IO_PORTBASE(ap, i);
+		ioaddr->ctl_addr = ioaddr->altstatus_addr
+				 = ATP867X_IO_ALTSTATUS(ap, i);
+		ioaddr->bmdma_addr = ATP867X_IO_DMABASE(ap, i);
+
+		ata_sff_std_ports(ioaddr);
+		rc = atp867x_set_priv(ap);
+		if (rc)
+			return rc;
+
+		atp867x_check_ports(ap, i);
+
+		ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx",
+			(unsigned long)ioaddr->cmd_addr,
+			(unsigned long)ioaddr->ctl_addr);
+		ata_port_desc(ap, "bmdma 0x%lx",
+			(unsigned long)ioaddr->bmdma_addr);
+
+		mask |= 1 << i;
+	}
+
+	if (!mask) {
+		dev_err(gdev, "no available native port\n");
+		return -ENODEV;
+	}
+
+	atp867x_fixup(host);
+
+	return dma_set_mask_and_coherent(&pdev->dev, ATA_DMA_MASK);
+}
+
+static int atp867x_init_one(struct pci_dev *pdev,
+	const struct pci_device_id *id)
+{
+	static const struct ata_port_info info_867x = {
+		.flags		= ATA_FLAG_SLAVE_POSS,
+		.pio_mask	= ATA_PIO4,
+		.udma_mask 	= ATA_UDMA6,
+		.port_ops	= &atp867x_ops,
+	};
+
+	struct ata_host *host;
+	const struct ata_port_info *ppi[] = { &info_867x, NULL };
+	int rc;
+
+	ata_print_version_once(&pdev->dev, DRV_VERSION);
+
+	rc = pcim_enable_device(pdev);
+	if (rc)
+		return rc;
+
+	dev_info(&pdev->dev, "ATP867X: ATP867 ATA UDMA133 controller (rev %02X)",
+		pdev->device);
+
+	host = ata_host_alloc_pinfo(&pdev->dev, ppi, ATP867X_NUM_PORTS);
+	if (!host) {
+		dev_err(&pdev->dev, "failed to allocate ATA host\n");
+		rc = -ENOMEM;
+		goto err_out;
+	}
+
+	rc = atp867x_ata_pci_sff_init_host(host);
+	if (rc) {
+		dev_err(&pdev->dev, "failed to init host\n");
+		goto err_out;
+	}
+
+	pci_set_master(pdev);
+
+	rc = ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
+				IRQF_SHARED, &atp867x_sht);
+	if (rc)
+		dev_err(&pdev->dev, "failed to activate host\n");
+
+err_out:
+	return rc;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int atp867x_reinit_one(struct pci_dev *pdev)
+{
+	struct ata_host *host = pci_get_drvdata(pdev);
+	int rc;
+
+	rc = ata_pci_device_do_resume(pdev);
+	if (rc)
+		return rc;
+
+	atp867x_fixup(host);
+
+	ata_host_resume(host);
+	return 0;
+}
+#endif
+
+static struct pci_device_id atp867x_pci_tbl[] = {
+	{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP867A),	0 },
+	{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP867B),	0 },
+	{ },
+};
+
+static struct pci_driver atp867x_driver = {
+	.name 		= DRV_NAME,
+	.id_table 	= atp867x_pci_tbl,
+	.probe 		= atp867x_init_one,
+	.remove		= ata_pci_remove_one,
+#ifdef CONFIG_PM_SLEEP
+	.suspend	= ata_pci_device_suspend,
+	.resume		= atp867x_reinit_one,
+#endif
+};
+
+module_pci_driver(atp867x_driver);
+
+MODULE_AUTHOR("John(Jung-Ik) Lee, Google Inc.");
+MODULE_DESCRIPTION("low level driver for Artop/Acard 867x ATA controller");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, atp867x_pci_tbl);
+MODULE_VERSION(DRV_VERSION);