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, 755 insertions, 0 deletions

diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
new file mode 100644
index 000000000..8f7695624
--- /dev/null
+++ b/drivers/pnp/resource.c
@@ -0,0 +1,755 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * resource.c - Contains functions for registering and analyzing resource information
+ *
+ * based on isapnp.c resource management (c) Jaroslav Kysela <perex@perex.cz>
+ * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
+ * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
+ *	Bjorn Helgaas <bjorn.helgaas@hp.com>
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/irq.h>
+#include <linux/pci.h>
+#include <linux/libata.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+
+#include <linux/pnp.h>
+#include "base.h"
+
+static int pnp_reserve_irq[16] = {[0 ... 15] = -1 };	/* reserve (don't use) some IRQ */
+static int pnp_reserve_dma[8] = {[0 ... 7] = -1 };	/* reserve (don't use) some DMA */
+static int pnp_reserve_io[16] = {[0 ... 15] = -1 };	/* reserve (don't use) some I/O region */
+static int pnp_reserve_mem[16] = {[0 ... 15] = -1 };	/* reserve (don't use) some memory region */
+
+/*
+ * option registration
+ */
+
+static struct pnp_option *pnp_build_option(struct pnp_dev *dev, unsigned long type,
+				    unsigned int option_flags)
+{
+	struct pnp_option *option;
+
+	option = kzalloc(sizeof(struct pnp_option), GFP_KERNEL);
+	if (!option)
+		return NULL;
+
+	option->flags = option_flags;
+	option->type = type;
+
+	list_add_tail(&option->list, &dev->options);
+	return option;
+}
+
+int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,
+			      pnp_irq_mask_t *map, unsigned char flags)
+{
+	struct pnp_option *option;
+	struct pnp_irq *irq;
+
+	option = pnp_build_option(dev, IORESOURCE_IRQ, option_flags);
+	if (!option)
+		return -ENOMEM;
+
+	irq = &option->u.irq;
+	irq->map = *map;
+	irq->flags = flags;
+
+#ifdef CONFIG_PCI
+	{
+		int i;
+
+		for (i = 0; i < 16; i++)
+			if (test_bit(i, irq->map.bits))
+				pcibios_penalize_isa_irq(i, 0);
+	}
+#endif
+
+	dbg_pnp_show_option(dev, option);
+	return 0;
+}
+
+int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags,
+			      unsigned char map, unsigned char flags)
+{
+	struct pnp_option *option;
+	struct pnp_dma *dma;
+
+	option = pnp_build_option(dev, IORESOURCE_DMA, option_flags);
+	if (!option)
+		return -ENOMEM;
+
+	dma = &option->u.dma;
+	dma->map = map;
+	dma->flags = flags;
+
+	dbg_pnp_show_option(dev, option);
+	return 0;
+}
+
+int pnp_register_port_resource(struct pnp_dev *dev, unsigned int option_flags,
+			       resource_size_t min, resource_size_t max,
+			       resource_size_t align, resource_size_t size,
+			       unsigned char flags)
+{
+	struct pnp_option *option;
+	struct pnp_port *port;
+
+	option = pnp_build_option(dev, IORESOURCE_IO, option_flags);
+	if (!option)
+		return -ENOMEM;
+
+	port = &option->u.port;
+	port->min = min;
+	port->max = max;
+	port->align = align;
+	port->size = size;
+	port->flags = flags;
+
+	dbg_pnp_show_option(dev, option);
+	return 0;
+}
+
+int pnp_register_mem_resource(struct pnp_dev *dev, unsigned int option_flags,
+			      resource_size_t min, resource_size_t max,
+			      resource_size_t align, resource_size_t size,
+			      unsigned char flags)
+{
+	struct pnp_option *option;
+	struct pnp_mem *mem;
+
+	option = pnp_build_option(dev, IORESOURCE_MEM, option_flags);
+	if (!option)
+		return -ENOMEM;
+
+	mem = &option->u.mem;
+	mem->min = min;
+	mem->max = max;
+	mem->align = align;
+	mem->size = size;
+	mem->flags = flags;
+
+	dbg_pnp_show_option(dev, option);
+	return 0;
+}
+
+void pnp_free_options(struct pnp_dev *dev)
+{
+	struct pnp_option *option, *tmp;
+
+	list_for_each_entry_safe(option, tmp, &dev->options, list) {
+		list_del(&option->list);
+		kfree(option);
+	}
+}
+
+/*
+ * resource validity checking
+ */
+
+#define length(start, end) (*(end) - *(start) + 1)
+
+/* Two ranges conflict if one doesn't end before the other starts */
+#define ranged_conflict(starta, enda, startb, endb) \
+	!((*(enda) < *(startb)) || (*(endb) < *(starta)))
+
+#define cannot_compare(flags) \
+((flags) & IORESOURCE_DISABLED)
+
+int pnp_check_port(struct pnp_dev *dev, struct resource *res)
+{
+	int i;
+	struct pnp_dev *tdev;
+	struct resource *tres;
+	resource_size_t *port, *end, *tport, *tend;
+
+	port = &res->start;
+	end = &res->end;
+
+	/* if the resource doesn't exist, don't complain about it */
+	if (cannot_compare(res->flags))
+		return 1;
+
+	/* check if the resource is already in use, skip if the
+	 * device is active because it itself may be in use */
+	if (!dev->active) {
+		if (!request_region(*port, length(port, end), "pnp"))
+			return 0;
+		release_region(*port, length(port, end));
+	}
+
+	/* check if the resource is reserved */
+	for (i = 0; i < 8; i++) {
+		int rport = pnp_reserve_io[i << 1];
+		int rend = pnp_reserve_io[(i << 1) + 1] + rport - 1;
+		if (ranged_conflict(port, end, &rport, &rend))
+			return 0;
+	}
+
+	/* check for internal conflicts */
+	for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_IO, i)); i++) {
+		if (tres != res && tres->flags & IORESOURCE_IO) {
+			tport = &tres->start;
+			tend = &tres->end;
+			if (ranged_conflict(port, end, tport, tend))
+				return 0;
+		}
+	}
+
+	/* check for conflicts with other pnp devices */
+	pnp_for_each_dev(tdev) {
+		if (tdev == dev)
+			continue;
+		for (i = 0;
+		     (tres = pnp_get_resource(tdev, IORESOURCE_IO, i));
+		     i++) {
+			if (tres->flags & IORESOURCE_IO) {
+				if (cannot_compare(tres->flags))
+					continue;
+				if (tres->flags & IORESOURCE_WINDOW)
+					continue;
+				tport = &tres->start;
+				tend = &tres->end;
+				if (ranged_conflict(port, end, tport, tend))
+					return 0;
+			}
+		}
+	}
+
+	return 1;
+}
+
+int pnp_check_mem(struct pnp_dev *dev, struct resource *res)
+{
+	int i;
+	struct pnp_dev *tdev;
+	struct resource *tres;
+	resource_size_t *addr, *end, *taddr, *tend;
+
+	addr = &res->start;
+	end = &res->end;
+
+	/* if the resource doesn't exist, don't complain about it */
+	if (cannot_compare(res->flags))
+		return 1;
+
+	/* check if the resource is already in use, skip if the
+	 * device is active because it itself may be in use */
+	if (!dev->active) {
+		if (!request_mem_region(*addr, length(addr, end), "pnp"))
+			return 0;
+		release_mem_region(*addr, length(addr, end));
+	}
+
+	/* check if the resource is reserved */
+	for (i = 0; i < 8; i++) {
+		int raddr = pnp_reserve_mem[i << 1];
+		int rend = pnp_reserve_mem[(i << 1) + 1] + raddr - 1;
+		if (ranged_conflict(addr, end, &raddr, &rend))
+			return 0;
+	}
+
+	/* check for internal conflicts */
+	for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_MEM, i)); i++) {
+		if (tres != res && tres->flags & IORESOURCE_MEM) {
+			taddr = &tres->start;
+			tend = &tres->end;
+			if (ranged_conflict(addr, end, taddr, tend))
+				return 0;
+		}
+	}
+
+	/* check for conflicts with other pnp devices */
+	pnp_for_each_dev(tdev) {
+		if (tdev == dev)
+			continue;
+		for (i = 0;
+		     (tres = pnp_get_resource(tdev, IORESOURCE_MEM, i));
+		     i++) {
+			if (tres->flags & IORESOURCE_MEM) {
+				if (cannot_compare(tres->flags))
+					continue;
+				if (tres->flags & IORESOURCE_WINDOW)
+					continue;
+				taddr = &tres->start;
+				tend = &tres->end;
+				if (ranged_conflict(addr, end, taddr, tend))
+					return 0;
+			}
+		}
+	}
+
+	return 1;
+}
+
+static irqreturn_t pnp_test_handler(int irq, void *dev_id)
+{
+	return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_PCI
+static int pci_dev_uses_irq(struct pnp_dev *pnp, struct pci_dev *pci,
+			    unsigned int irq)
+{
+	u32 class;
+	u8 progif;
+
+	if (pci->irq == irq) {
+		pnp_dbg(&pnp->dev, "  device %s using irq %d\n",
+			pci_name(pci), irq);
+		return 1;
+	}
+
+	/*
+	 * See pci_setup_device() and ata_pci_sff_activate_host() for
+	 * similar IDE legacy detection.
+	 */
+	pci_read_config_dword(pci, PCI_CLASS_REVISION, &class);
+	class >>= 8;		/* discard revision ID */
+	progif = class & 0xff;
+	class >>= 8;
+
+	if (class == PCI_CLASS_STORAGE_IDE) {
+		/*
+		 * Unless both channels are native-PCI mode only,
+		 * treat the compatibility IRQs as busy.
+		 */
+		if ((progif & 0x5) != 0x5)
+			if (ATA_PRIMARY_IRQ(pci) == irq ||
+			    ATA_SECONDARY_IRQ(pci) == irq) {
+				pnp_dbg(&pnp->dev, "  legacy IDE device %s "
+					"using irq %d\n", pci_name(pci), irq);
+				return 1;
+			}
+	}
+
+	return 0;
+}
+#endif
+
+static int pci_uses_irq(struct pnp_dev *pnp, unsigned int irq)
+{
+#ifdef CONFIG_PCI
+	struct pci_dev *pci = NULL;
+
+	for_each_pci_dev(pci) {
+		if (pci_dev_uses_irq(pnp, pci, irq)) {
+			pci_dev_put(pci);
+			return 1;
+		}
+	}
+#endif
+	return 0;
+}
+
+int pnp_check_irq(struct pnp_dev *dev, struct resource *res)
+{
+	int i;
+	struct pnp_dev *tdev;
+	struct resource *tres;
+	resource_size_t *irq;
+
+	irq = &res->start;
+
+	/* if the resource doesn't exist, don't complain about it */
+	if (cannot_compare(res->flags))
+		return 1;
+
+	/* check if the resource is valid */
+	if (*irq > 15)
+		return 0;
+
+	/* check if the resource is reserved */
+	for (i = 0; i < 16; i++) {
+		if (pnp_reserve_irq[i] == *irq)
+			return 0;
+	}
+
+	/* check for internal conflicts */
+	for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_IRQ, i)); i++) {
+		if (tres != res && tres->flags & IORESOURCE_IRQ) {
+			if (tres->start == *irq)
+				return 0;
+		}
+	}
+
+	/* check if the resource is being used by a pci device */
+	if (pci_uses_irq(dev, *irq))
+		return 0;
+
+	/* check if the resource is already in use, skip if the
+	 * device is active because it itself may be in use */
+	if (!dev->active) {
+		if (request_irq(*irq, pnp_test_handler,
+				IRQF_PROBE_SHARED, "pnp", NULL))
+			return 0;
+		free_irq(*irq, NULL);
+	}
+
+	/* check for conflicts with other pnp devices */
+	pnp_for_each_dev(tdev) {
+		if (tdev == dev)
+			continue;
+		for (i = 0;
+		     (tres = pnp_get_resource(tdev, IORESOURCE_IRQ, i));
+		     i++) {
+			if (tres->flags & IORESOURCE_IRQ) {
+				if (cannot_compare(tres->flags))
+					continue;
+				if (tres->start == *irq)
+					return 0;
+			}
+		}
+	}
+
+	return 1;
+}
+
+#ifdef CONFIG_ISA_DMA_API
+int pnp_check_dma(struct pnp_dev *dev, struct resource *res)
+{
+	int i;
+	struct pnp_dev *tdev;
+	struct resource *tres;
+	resource_size_t *dma;
+
+	dma = &res->start;
+
+	/* if the resource doesn't exist, don't complain about it */
+	if (cannot_compare(res->flags))
+		return 1;
+
+	/* check if the resource is valid */
+	if (*dma == 4 || *dma > 7)
+		return 0;
+
+	/* check if the resource is reserved */
+	for (i = 0; i < 8; i++) {
+		if (pnp_reserve_dma[i] == *dma)
+			return 0;
+	}
+
+	/* check for internal conflicts */
+	for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_DMA, i)); i++) {
+		if (tres != res && tres->flags & IORESOURCE_DMA) {
+			if (tres->start == *dma)
+				return 0;
+		}
+	}
+
+	/* check if the resource is already in use, skip if the
+	 * device is active because it itself may be in use */
+	if (!dev->active) {
+		if (request_dma(*dma, "pnp"))
+			return 0;
+		free_dma(*dma);
+	}
+
+	/* check for conflicts with other pnp devices */
+	pnp_for_each_dev(tdev) {
+		if (tdev == dev)
+			continue;
+		for (i = 0;
+		     (tres = pnp_get_resource(tdev, IORESOURCE_DMA, i));
+		     i++) {
+			if (tres->flags & IORESOURCE_DMA) {
+				if (cannot_compare(tres->flags))
+					continue;
+				if (tres->start == *dma)
+					return 0;
+			}
+		}
+	}
+
+	return 1;
+}
+#endif /* CONFIG_ISA_DMA_API */
+
+unsigned long pnp_resource_type(struct resource *res)
+{
+	return res->flags & (IORESOURCE_IO  | IORESOURCE_MEM |
+			     IORESOURCE_IRQ | IORESOURCE_DMA |
+			     IORESOURCE_BUS);
+}
+
+struct resource *pnp_get_resource(struct pnp_dev *dev,
+				  unsigned long type, unsigned int num)
+{
+	struct pnp_resource *pnp_res;
+	struct resource *res;
+
+	list_for_each_entry(pnp_res, &dev->resources, list) {
+		res = &pnp_res->res;
+		if (pnp_resource_type(res) == type && num-- == 0)
+			return res;
+	}
+	return NULL;
+}
+EXPORT_SYMBOL(pnp_get_resource);
+
+static struct pnp_resource *pnp_new_resource(struct pnp_dev *dev)
+{
+	struct pnp_resource *pnp_res;
+
+	pnp_res = kzalloc(sizeof(struct pnp_resource), GFP_KERNEL);
+	if (!pnp_res)
+		return NULL;
+
+	list_add_tail(&pnp_res->list, &dev->resources);
+	return pnp_res;
+}
+
+struct pnp_resource *pnp_add_resource(struct pnp_dev *dev,
+				      struct resource *res)
+{
+	struct pnp_resource *pnp_res;
+
+	pnp_res = pnp_new_resource(dev);
+	if (!pnp_res) {
+		dev_err(&dev->dev, "can't add resource %pR\n", res);
+		return NULL;
+	}
+
+	pnp_res->res = *res;
+	pnp_res->res.name = dev->name;
+	dev_dbg(&dev->dev, "%pR\n", res);
+	return pnp_res;
+}
+
+struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
+					  int flags)
+{
+	struct pnp_resource *pnp_res;
+	struct resource *res;
+
+	pnp_res = pnp_new_resource(dev);
+	if (!pnp_res) {
+		dev_err(&dev->dev, "can't add resource for IRQ %d\n", irq);
+		return NULL;
+	}
+
+	res = &pnp_res->res;
+	res->flags = IORESOURCE_IRQ | flags;
+	res->start = irq;
+	res->end = irq;
+
+	dev_dbg(&dev->dev, "%pR\n", res);
+	return pnp_res;
+}
+
+struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
+					  int flags)
+{
+	struct pnp_resource *pnp_res;
+	struct resource *res;
+
+	pnp_res = pnp_new_resource(dev);
+	if (!pnp_res) {
+		dev_err(&dev->dev, "can't add resource for DMA %d\n", dma);
+		return NULL;
+	}
+
+	res = &pnp_res->res;
+	res->flags = IORESOURCE_DMA | flags;
+	res->start = dma;
+	res->end = dma;
+
+	dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
+	return pnp_res;
+}
+
+struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
+					 resource_size_t start,
+					 resource_size_t end, int flags)
+{
+	struct pnp_resource *pnp_res;
+	struct resource *res;
+
+	pnp_res = pnp_new_resource(dev);
+	if (!pnp_res) {
+		dev_err(&dev->dev, "can't add resource for IO %#llx-%#llx\n",
+			(unsigned long long) start,
+			(unsigned long long) end);
+		return NULL;
+	}
+
+	res = &pnp_res->res;
+	res->flags = IORESOURCE_IO | flags;
+	res->start = start;
+	res->end = end;
+
+	dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
+	return pnp_res;
+}
+
+struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
+					  resource_size_t start,
+					  resource_size_t end, int flags)
+{
+	struct pnp_resource *pnp_res;
+	struct resource *res;
+
+	pnp_res = pnp_new_resource(dev);
+	if (!pnp_res) {
+		dev_err(&dev->dev, "can't add resource for MEM %#llx-%#llx\n",
+			(unsigned long long) start,
+			(unsigned long long) end);
+		return NULL;
+	}
+
+	res = &pnp_res->res;
+	res->flags = IORESOURCE_MEM | flags;
+	res->start = start;
+	res->end = end;
+
+	dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
+	return pnp_res;
+}
+
+struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
+					  resource_size_t start,
+					  resource_size_t end)
+{
+	struct pnp_resource *pnp_res;
+	struct resource *res;
+
+	pnp_res = pnp_new_resource(dev);
+	if (!pnp_res) {
+		dev_err(&dev->dev, "can't add resource for BUS %#llx-%#llx\n",
+			(unsigned long long) start,
+			(unsigned long long) end);
+		return NULL;
+	}
+
+	res = &pnp_res->res;
+	res->flags = IORESOURCE_BUS;
+	res->start = start;
+	res->end = end;
+
+	dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
+	return pnp_res;
+}
+
+/*
+ * Determine whether the specified resource is a possible configuration
+ * for this device.
+ */
+int pnp_possible_config(struct pnp_dev *dev, int type, resource_size_t start,
+			resource_size_t size)
+{
+	struct pnp_option *option;
+	struct pnp_port *port;
+	struct pnp_mem *mem;
+	struct pnp_irq *irq;
+	struct pnp_dma *dma;
+
+	list_for_each_entry(option, &dev->options, list) {
+		if (option->type != type)
+			continue;
+
+		switch (option->type) {
+		case IORESOURCE_IO:
+			port = &option->u.port;
+			if (port->min == start && port->size == size)
+				return 1;
+			break;
+		case IORESOURCE_MEM:
+			mem = &option->u.mem;
+			if (mem->min == start && mem->size == size)
+				return 1;
+			break;
+		case IORESOURCE_IRQ:
+			irq = &option->u.irq;
+			if (start < PNP_IRQ_NR &&
+			    test_bit(start, irq->map.bits))
+				return 1;
+			break;
+		case IORESOURCE_DMA:
+			dma = &option->u.dma;
+			if (dma->map & (1 << start))
+				return 1;
+			break;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(pnp_possible_config);
+
+int pnp_range_reserved(resource_size_t start, resource_size_t end)
+{
+	struct pnp_dev *dev;
+	struct pnp_resource *pnp_res;
+	resource_size_t *dev_start, *dev_end;
+
+	pnp_for_each_dev(dev) {
+		list_for_each_entry(pnp_res, &dev->resources, list) {
+			dev_start = &pnp_res->res.start;
+			dev_end   = &pnp_res->res.end;
+			if (ranged_conflict(&start, &end, dev_start, dev_end))
+				return 1;
+		}
+	}
+	return 0;
+}
+EXPORT_SYMBOL(pnp_range_reserved);
+
+/* format is: pnp_reserve_irq=irq1[,irq2] .... */
+static int __init pnp_setup_reserve_irq(char *str)
+{
+	int i;
+
+	for (i = 0; i < 16; i++)
+		if (get_option(&str, &pnp_reserve_irq[i]) != 2)
+			break;
+	return 1;
+}
+
+__setup("pnp_reserve_irq=", pnp_setup_reserve_irq);
+
+/* format is: pnp_reserve_dma=dma1[,dma2] .... */
+static int __init pnp_setup_reserve_dma(char *str)
+{
+	int i;
+
+	for (i = 0; i < 8; i++)
+		if (get_option(&str, &pnp_reserve_dma[i]) != 2)
+			break;
+	return 1;
+}
+
+__setup("pnp_reserve_dma=", pnp_setup_reserve_dma);
+
+/* format is: pnp_reserve_io=io1,size1[,io2,size2] .... */
+static int __init pnp_setup_reserve_io(char *str)
+{
+	int i;
+
+	for (i = 0; i < 16; i++)
+		if (get_option(&str, &pnp_reserve_io[i]) != 2)
+			break;
+	return 1;
+}
+
+__setup("pnp_reserve_io=", pnp_setup_reserve_io);
+
+/* format is: pnp_reserve_mem=mem1,size1[,mem2,size2] .... */
+static int __init pnp_setup_reserve_mem(char *str)
+{
+	int i;
+
+	for (i = 0; i < 16; i++)
+		if (get_option(&str, &pnp_reserve_mem[i]) != 2)
+			break;
+	return 1;
+}
+
+__setup("pnp_reserve_mem=", pnp_setup_reserve_mem);