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, 617 insertions, 0 deletions

diff --git a/drivers/net/wireless/intersil/hostap/hostap_plx.c b/drivers/net/wireless/intersil/hostap/hostap_plx.c
new file mode 100644
index 000000000..58247290f
--- /dev/null
+++ b/drivers/net/wireless/intersil/hostap/hostap_plx.c
@@ -0,0 +1,617 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#define PRISM2_PLX
+
+/* Host AP driver's support for PC Cards on PCI adapters using PLX9052 is
+ * based on:
+ * - Host AP driver patch from james@madingley.org
+ * - linux-wlan-ng driver, Copyright (C) AbsoluteValue Systems, Inc.
+ */
+
+
+#include <linux/module.h>
+#include <linux/if.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+
+#include "hostap_wlan.h"
+
+
+static char *dev_info = "hostap_plx";
+
+
+MODULE_AUTHOR("Jouni Malinen");
+MODULE_DESCRIPTION("Support for Intersil Prism2-based 802.11 wireless LAN "
+		   "cards (PLX).");
+MODULE_LICENSE("GPL");
+
+
+static int ignore_cis;
+module_param(ignore_cis, int, 0444);
+MODULE_PARM_DESC(ignore_cis, "Do not verify manfid information in CIS");
+
+
+/* struct local_info::hw_priv */
+struct hostap_plx_priv {
+	void __iomem *attr_mem;
+	unsigned int cor_offset;
+};
+
+
+#define PLX_MIN_ATTR_LEN 512	/* at least 2 x 256 is needed for CIS */
+#define COR_SRESET       0x80
+#define COR_LEVLREQ      0x40
+#define COR_ENABLE_FUNC  0x01
+/* PCI Configuration Registers */
+#define PLX_PCIIPR       0x3d   /* PCI Interrupt Pin */
+/* Local Configuration Registers */
+#define PLX_INTCSR       0x4c   /* Interrupt Control/Status Register */
+#define PLX_INTCSR_PCI_INTEN BIT(6) /* PCI Interrupt Enable */
+#define PLX_CNTRL        0x50
+#define PLX_CNTRL_SERIAL_EEPROM_PRESENT BIT(28)
+
+
+#define PLXDEV(vendor,dev,str) { vendor, dev, PCI_ANY_ID, PCI_ANY_ID }
+
+static const struct pci_device_id prism2_plx_id_table[] = {
+	PLXDEV(0x10b7, 0x7770, "3Com AirConnect PCI 777A"),
+	PLXDEV(0x111a, 0x1023, "Siemens SpeedStream SS1023"),
+	PLXDEV(0x126c, 0x8030, "Nortel emobility"),
+	PLXDEV(0x1562, 0x0001, "Symbol LA-4123"),
+	PLXDEV(0x1385, 0x4100, "Netgear MA301"),
+	PLXDEV(0x15e8, 0x0130, "National Datacomm NCP130 (PLX9052)"),
+	PLXDEV(0x15e8, 0x0131, "National Datacomm NCP130 (TMD7160)"),
+	PLXDEV(0x1638, 0x1100, "Eumitcom WL11000"),
+	PLXDEV(0x16ab, 0x1100, "Global Sun Tech GL24110P"),
+	PLXDEV(0x16ab, 0x1101, "Global Sun Tech GL24110P (?)"),
+	PLXDEV(0x16ab, 0x1102, "Linksys WPC11 with WDT11"),
+	PLXDEV(0x16ab, 0x1103, "Longshine 8031"),
+	PLXDEV(0x16ec, 0x3685, "US Robotics USR2415"),
+	PLXDEV(0xec80, 0xec00, "Belkin F5D6000"),
+	{ 0 }
+};
+
+
+/* Array of known Prism2/2.5 PC Card manufactured ids. If your card's manfid
+ * is not listed here, you will need to add it here to get the driver
+ * initialized. */
+static struct prism2_plx_manfid {
+	u16 manfid1, manfid2;
+} prism2_plx_known_manfids[] = {
+	{ 0x000b, 0x7110 } /* D-Link DWL-650 Rev. P1 */,
+	{ 0x000b, 0x7300 } /* Philips 802.11b WLAN PCMCIA */,
+	{ 0x0101, 0x0777 } /* 3Com AirConnect PCI 777A */,
+	{ 0x0126, 0x8000 } /* Proxim RangeLAN */,
+	{ 0x0138, 0x0002 } /* Compaq WL100 */,
+	{ 0x0156, 0x0002 } /* Intersil Prism II Ref. Design (and others) */,
+	{ 0x026f, 0x030b } /* Buffalo WLI-CF-S11G */,
+	{ 0x0274, 0x1612 } /* Linksys WPC11 Ver 2.5 */,
+	{ 0x0274, 0x1613 } /* Linksys WPC11 Ver 3 */,
+	{ 0x028a, 0x0002 } /* D-Link DRC-650 */,
+	{ 0x0250, 0x0002 } /* Samsung SWL2000-N */,
+	{ 0xc250, 0x0002 } /* EMTAC A2424i */,
+	{ 0xd601, 0x0002 } /* Z-Com XI300 */,
+	{ 0xd601, 0x0005 } /* Zcomax XI-325H 200mW */,
+	{ 0, 0}
+};
+
+
+#ifdef PRISM2_IO_DEBUG
+
+static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
+	outb(v, dev->base_addr + a);
+	spin_unlock_irqrestore(&local->lock, flags);
+}
+
+static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+	u8 v;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	v = inb(dev->base_addr + a);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v);
+	spin_unlock_irqrestore(&local->lock, flags);
+	return v;
+}
+
+static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
+	outw(v, dev->base_addr + a);
+	spin_unlock_irqrestore(&local->lock, flags);
+}
+
+static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+	u16 v;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	v = inw(dev->base_addr + a);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
+	spin_unlock_irqrestore(&local->lock, flags);
+	return v;
+}
+
+static inline void hfa384x_outsw_debug(struct net_device *dev, int a,
+				       u8 *buf, int wc)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTSW, a, wc);
+	outsw(dev->base_addr + a, buf, wc);
+	spin_unlock_irqrestore(&local->lock, flags);
+}
+
+static inline void hfa384x_insw_debug(struct net_device *dev, int a,
+				      u8 *buf, int wc)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INSW, a, wc);
+	insw(dev->base_addr + a, buf, wc);
+	spin_unlock_irqrestore(&local->lock, flags);
+}
+
+#define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
+#define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
+#define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
+#define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
+#define HFA384X_OUTSW(a, buf, wc) hfa384x_outsw_debug(dev, (a), (buf), (wc))
+#define HFA384X_INSW(a, buf, wc) hfa384x_insw_debug(dev, (a), (buf), (wc))
+
+#else /* PRISM2_IO_DEBUG */
+
+#define HFA384X_OUTB(v,a) outb((v), dev->base_addr + (a))
+#define HFA384X_INB(a) inb(dev->base_addr + (a))
+#define HFA384X_OUTW(v,a) outw((v), dev->base_addr + (a))
+#define HFA384X_INW(a) inw(dev->base_addr + (a))
+#define HFA384X_INSW(a, buf, wc) insw(dev->base_addr + (a), buf, wc)
+#define HFA384X_OUTSW(a, buf, wc) outsw(dev->base_addr + (a), buf, wc)
+
+#endif /* PRISM2_IO_DEBUG */
+
+
+static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
+			    int len)
+{
+	u16 d_off;
+	u16 *pos;
+
+	d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
+	pos = (u16 *) buf;
+
+	if (len / 2)
+		HFA384X_INSW(d_off, buf, len / 2);
+	pos += len / 2;
+
+	if (len & 1)
+		*((char *) pos) = HFA384X_INB(d_off);
+
+	return 0;
+}
+
+
+static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
+{
+	u16 d_off;
+	u16 *pos;
+
+	d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
+	pos = (u16 *) buf;
+
+	if (len / 2)
+		HFA384X_OUTSW(d_off, buf, len / 2);
+	pos += len / 2;
+
+	if (len & 1)
+		HFA384X_OUTB(*((char *) pos), d_off);
+
+	return 0;
+}
+
+
+/* FIX: This might change at some point.. */
+#include "hostap_hw.c"
+
+
+static void prism2_plx_cor_sreset(local_info_t *local)
+{
+	unsigned char corsave;
+	struct hostap_plx_priv *hw_priv = local->hw_priv;
+
+	printk(KERN_DEBUG "%s: Doing reset via direct COR access.\n",
+	       dev_info);
+
+	/* Set sreset bit of COR and clear it after hold time */
+
+	if (hw_priv->attr_mem == NULL) {
+		/* TMD7160 - COR at card's first I/O addr */
+		corsave = inb(hw_priv->cor_offset);
+		outb(corsave | COR_SRESET, hw_priv->cor_offset);
+		mdelay(2);
+		outb(corsave & ~COR_SRESET, hw_priv->cor_offset);
+		mdelay(2);
+	} else {
+		/* PLX9052 */
+		corsave = readb(hw_priv->attr_mem + hw_priv->cor_offset);
+		writeb(corsave | COR_SRESET,
+		       hw_priv->attr_mem + hw_priv->cor_offset);
+		mdelay(2);
+		writeb(corsave & ~COR_SRESET,
+		       hw_priv->attr_mem + hw_priv->cor_offset);
+		mdelay(2);
+	}
+}
+
+
+static void prism2_plx_genesis_reset(local_info_t *local, int hcr)
+{
+	unsigned char corsave;
+	struct hostap_plx_priv *hw_priv = local->hw_priv;
+
+	if (hw_priv->attr_mem == NULL) {
+		/* TMD7160 - COR at card's first I/O addr */
+		corsave = inb(hw_priv->cor_offset);
+		outb(corsave | COR_SRESET, hw_priv->cor_offset);
+		mdelay(10);
+		outb(hcr, hw_priv->cor_offset + 2);
+		mdelay(10);
+		outb(corsave & ~COR_SRESET, hw_priv->cor_offset);
+		mdelay(10);
+	} else {
+		/* PLX9052 */
+		corsave = readb(hw_priv->attr_mem + hw_priv->cor_offset);
+		writeb(corsave | COR_SRESET,
+		       hw_priv->attr_mem + hw_priv->cor_offset);
+		mdelay(10);
+		writeb(hcr, hw_priv->attr_mem + hw_priv->cor_offset + 2);
+		mdelay(10);
+		writeb(corsave & ~COR_SRESET,
+		       hw_priv->attr_mem + hw_priv->cor_offset);
+		mdelay(10);
+	}
+}
+
+
+static struct prism2_helper_functions prism2_plx_funcs =
+{
+	.card_present	= NULL,
+	.cor_sreset	= prism2_plx_cor_sreset,
+	.genesis_reset	= prism2_plx_genesis_reset,
+	.hw_type	= HOSTAP_HW_PLX,
+};
+
+
+static int prism2_plx_check_cis(void __iomem *attr_mem, int attr_len,
+				unsigned int *cor_offset,
+				unsigned int *cor_index)
+{
+#define CISTPL_CONFIG 0x1A
+#define CISTPL_MANFID 0x20
+#define CISTPL_END 0xFF
+#define CIS_MAX_LEN 256
+	u8 *cis;
+	int i, pos;
+	unsigned int rmsz, rasz, manfid1, manfid2;
+	struct prism2_plx_manfid *manfid;
+
+	cis = kmalloc(CIS_MAX_LEN, GFP_KERNEL);
+	if (cis == NULL)
+		return -ENOMEM;
+
+	/* read CIS; it is in even offsets in the beginning of attr_mem */
+	for (i = 0; i < CIS_MAX_LEN; i++)
+		cis[i] = readb(attr_mem + 2 * i);
+	printk(KERN_DEBUG "%s: CIS: %6ph ...\n", dev_info, cis);
+
+	/* set reasonable defaults for Prism2 cards just in case CIS parsing
+	 * fails */
+	*cor_offset = 0x3e0;
+	*cor_index = 0x01;
+	manfid1 = manfid2 = 0;
+
+	pos = 0;
+	while (pos < CIS_MAX_LEN - 1 && cis[pos] != CISTPL_END) {
+		if (pos + 2 + cis[pos + 1] > CIS_MAX_LEN)
+			goto cis_error;
+
+		switch (cis[pos]) {
+		case CISTPL_CONFIG:
+			if (cis[pos + 1] < 2)
+				goto cis_error;
+			rmsz = (cis[pos + 2] & 0x3c) >> 2;
+			rasz = cis[pos + 2] & 0x03;
+			if (4 + rasz + rmsz > cis[pos + 1])
+				goto cis_error;
+			*cor_index = cis[pos + 3] & 0x3F;
+			*cor_offset = 0;
+			for (i = 0; i <= rasz; i++)
+				*cor_offset += cis[pos + 4 + i] << (8 * i);
+			printk(KERN_DEBUG "%s: cor_index=0x%x "
+			       "cor_offset=0x%x\n", dev_info,
+			       *cor_index, *cor_offset);
+			if (*cor_offset > attr_len) {
+				printk(KERN_ERR "%s: COR offset not within "
+				       "attr_mem\n", dev_info);
+				kfree(cis);
+				return -1;
+			}
+			break;
+
+		case CISTPL_MANFID:
+			if (cis[pos + 1] < 4)
+				goto cis_error;
+			manfid1 = cis[pos + 2] + (cis[pos + 3] << 8);
+			manfid2 = cis[pos + 4] + (cis[pos + 5] << 8);
+			printk(KERN_DEBUG "%s: manfid=0x%04x, 0x%04x\n",
+			       dev_info, manfid1, manfid2);
+			break;
+		}
+
+		pos += cis[pos + 1] + 2;
+	}
+
+	if (pos >= CIS_MAX_LEN || cis[pos] != CISTPL_END)
+		goto cis_error;
+
+	for (manfid = prism2_plx_known_manfids; manfid->manfid1 != 0; manfid++)
+		if (manfid1 == manfid->manfid1 && manfid2 == manfid->manfid2) {
+			kfree(cis);
+			return 0;
+		}
+
+	printk(KERN_INFO "%s: unknown manfid 0x%04x, 0x%04x - assuming this is"
+	       " not supported card\n", dev_info, manfid1, manfid2);
+	goto fail;
+
+ cis_error:
+	printk(KERN_WARNING "%s: invalid CIS data\n", dev_info);
+
+ fail:
+	kfree(cis);
+	if (ignore_cis) {
+		printk(KERN_INFO "%s: ignore_cis parameter set - ignoring "
+		       "errors during CIS verification\n", dev_info);
+		return 0;
+	}
+	return -1;
+}
+
+
+static int prism2_plx_probe(struct pci_dev *pdev,
+			    const struct pci_device_id *id)
+{
+	unsigned int pccard_ioaddr, plx_ioaddr;
+	unsigned long pccard_attr_mem;
+	unsigned int pccard_attr_len;
+	void __iomem *attr_mem = NULL;
+	unsigned int cor_offset = 0, cor_index = 0;
+	u32 reg;
+	local_info_t *local = NULL;
+	struct net_device *dev = NULL;
+	struct hostap_interface *iface;
+	static int cards_found /* = 0 */;
+	int irq_registered = 0;
+	int tmd7160;
+	struct hostap_plx_priv *hw_priv;
+
+	hw_priv = kzalloc(sizeof(*hw_priv), GFP_KERNEL);
+	if (hw_priv == NULL)
+		return -ENOMEM;
+
+	if (pci_enable_device(pdev))
+		goto err_out_free;
+
+	/* National Datacomm NCP130 based on TMD7160, not PLX9052. */
+	tmd7160 = (pdev->vendor == 0x15e8) && (pdev->device == 0x0131);
+
+	plx_ioaddr = pci_resource_start(pdev, 1);
+	pccard_ioaddr = pci_resource_start(pdev, tmd7160 ? 2 : 3);
+
+	if (tmd7160) {
+		/* TMD7160 */
+		attr_mem = NULL; /* no access to PC Card attribute memory */
+
+		printk(KERN_INFO "TMD7160 PCI/PCMCIA adapter: io=0x%x, "
+		       "irq=%d, pccard_io=0x%x\n",
+		       plx_ioaddr, pdev->irq, pccard_ioaddr);
+
+		cor_offset = plx_ioaddr;
+		cor_index = 0x04;
+
+		outb(cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, plx_ioaddr);
+		mdelay(1);
+		reg = inb(plx_ioaddr);
+		if (reg != (cor_index | COR_LEVLREQ | COR_ENABLE_FUNC)) {
+			printk(KERN_ERR "%s: Error setting COR (expected="
+			       "0x%02x, was=0x%02x)\n", dev_info,
+			       cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, reg);
+			goto fail;
+		}
+	} else {
+		/* PLX9052 */
+		pccard_attr_mem = pci_resource_start(pdev, 2);
+		pccard_attr_len = pci_resource_len(pdev, 2);
+		if (pccard_attr_len < PLX_MIN_ATTR_LEN)
+			goto fail;
+
+
+		attr_mem = ioremap(pccard_attr_mem, pccard_attr_len);
+		if (attr_mem == NULL) {
+			printk(KERN_ERR "%s: cannot remap attr_mem\n",
+			       dev_info);
+			goto fail;
+		}
+
+		printk(KERN_INFO "PLX9052 PCI/PCMCIA adapter: "
+		       "mem=0x%lx, plx_io=0x%x, irq=%d, pccard_io=0x%x\n",
+		       pccard_attr_mem, plx_ioaddr, pdev->irq, pccard_ioaddr);
+
+		if (prism2_plx_check_cis(attr_mem, pccard_attr_len,
+					 &cor_offset, &cor_index)) {
+			printk(KERN_INFO "Unknown PC Card CIS - not a "
+			       "Prism2/2.5 card?\n");
+			goto fail;
+		}
+
+		printk(KERN_DEBUG "Prism2/2.5 PC Card detected in PLX9052 "
+		       "adapter\n");
+
+		/* Write COR to enable PC Card */
+		writeb(cor_index | COR_LEVLREQ | COR_ENABLE_FUNC,
+		       attr_mem + cor_offset);
+
+		/* Enable PCI interrupts if they are not already enabled */
+		reg = inl(plx_ioaddr + PLX_INTCSR);
+		printk(KERN_DEBUG "PLX_INTCSR=0x%x\n", reg);
+		if (!(reg & PLX_INTCSR_PCI_INTEN)) {
+			outl(reg | PLX_INTCSR_PCI_INTEN,
+			     plx_ioaddr + PLX_INTCSR);
+			if (!(inl(plx_ioaddr + PLX_INTCSR) &
+			      PLX_INTCSR_PCI_INTEN)) {
+				printk(KERN_WARNING "%s: Could not enable "
+				       "Local Interrupts\n", dev_info);
+				goto fail;
+			}
+		}
+
+		reg = inl(plx_ioaddr + PLX_CNTRL);
+		printk(KERN_DEBUG "PLX_CNTRL=0x%x (Serial EEPROM "
+		       "present=%d)\n",
+		       reg, (reg & PLX_CNTRL_SERIAL_EEPROM_PRESENT) != 0);
+		/* should set PLX_PCIIPR to 0x01 (INTA#) if Serial EEPROM is
+		 * not present; but are there really such cards in use(?) */
+	}
+
+	dev = prism2_init_local_data(&prism2_plx_funcs, cards_found,
+				     &pdev->dev);
+	if (dev == NULL)
+		goto fail;
+	iface = netdev_priv(dev);
+	local = iface->local;
+	local->hw_priv = hw_priv;
+	cards_found++;
+
+	dev->irq = pdev->irq;
+	dev->base_addr = pccard_ioaddr;
+	hw_priv->attr_mem = attr_mem;
+	hw_priv->cor_offset = cor_offset;
+
+	pci_set_drvdata(pdev, dev);
+
+	if (request_irq(dev->irq, prism2_interrupt, IRQF_SHARED, dev->name,
+			dev)) {
+		printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
+		goto fail;
+	} else
+		irq_registered = 1;
+
+	if (prism2_hw_config(dev, 1)) {
+		printk(KERN_DEBUG "%s: hardware initialization failed\n",
+		       dev_info);
+		goto fail;
+	}
+
+	return hostap_hw_ready(dev);
+
+ fail:
+	if (irq_registered && dev)
+		free_irq(dev->irq, dev);
+
+	if (attr_mem)
+		iounmap(attr_mem);
+
+	pci_disable_device(pdev);
+	prism2_free_local_data(dev);
+
+ err_out_free:
+	kfree(hw_priv);
+
+	return -ENODEV;
+}
+
+
+static void prism2_plx_remove(struct pci_dev *pdev)
+{
+	struct net_device *dev;
+	struct hostap_interface *iface;
+	struct hostap_plx_priv *hw_priv;
+
+	dev = pci_get_drvdata(pdev);
+	iface = netdev_priv(dev);
+	hw_priv = iface->local->hw_priv;
+
+	/* Reset the hardware, and ensure interrupts are disabled. */
+	prism2_plx_cor_sreset(iface->local);
+	hfa384x_disable_interrupts(dev);
+
+	if (hw_priv->attr_mem)
+		iounmap(hw_priv->attr_mem);
+	if (dev->irq)
+		free_irq(dev->irq, dev);
+
+	prism2_free_local_data(dev);
+	kfree(hw_priv);
+	pci_disable_device(pdev);
+}
+
+
+MODULE_DEVICE_TABLE(pci, prism2_plx_id_table);
+
+static struct pci_driver prism2_plx_driver = {
+	.name		= "hostap_plx",
+	.id_table	= prism2_plx_id_table,
+	.probe		= prism2_plx_probe,
+	.remove		= prism2_plx_remove,
+};
+
+module_pci_driver(prism2_plx_driver);