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, 605 insertions, 0 deletions

diff --git a/drivers/ssb/sdio.c b/drivers/ssb/sdio.c
new file mode 100644
index 000000000..66c5c2169
--- /dev/null
+++ b/drivers/ssb/sdio.c
@@ -0,0 +1,605 @@
+/*
+ * Sonics Silicon Backplane
+ * SDIO-Hostbus related functions
+ *
+ * Copyright 2009 Albert Herranz <albert_herranz@yahoo.es>
+ *
+ * Based on drivers/ssb/pcmcia.c
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2007-2008 Michael Buesch <m@bues.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ *
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ssb/ssb.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/etherdevice.h>
+#include <linux/mmc/sdio_func.h>
+
+/* Define the following to 1 to enable a printk on each coreswitch. */
+#define SSB_VERBOSE_SDIOCORESWITCH_DEBUG		0
+
+
+/* Hardware invariants CIS tuples */
+#define SSB_SDIO_CIS			0x80
+#define  SSB_SDIO_CIS_SROMREV		0x00
+#define  SSB_SDIO_CIS_ID		0x01
+#define  SSB_SDIO_CIS_BOARDREV		0x02
+#define  SSB_SDIO_CIS_PA		0x03
+#define   SSB_SDIO_CIS_PA_PA0B0_LO	0
+#define   SSB_SDIO_CIS_PA_PA0B0_HI	1
+#define   SSB_SDIO_CIS_PA_PA0B1_LO	2
+#define   SSB_SDIO_CIS_PA_PA0B1_HI	3
+#define   SSB_SDIO_CIS_PA_PA0B2_LO	4
+#define   SSB_SDIO_CIS_PA_PA0B2_HI	5
+#define   SSB_SDIO_CIS_PA_ITSSI		6
+#define   SSB_SDIO_CIS_PA_MAXPOW	7
+#define  SSB_SDIO_CIS_OEMNAME		0x04
+#define  SSB_SDIO_CIS_CCODE		0x05
+#define  SSB_SDIO_CIS_ANTENNA		0x06
+#define  SSB_SDIO_CIS_ANTGAIN		0x07
+#define  SSB_SDIO_CIS_BFLAGS		0x08
+#define  SSB_SDIO_CIS_LEDS		0x09
+
+#define CISTPL_FUNCE_LAN_NODE_ID        0x04	/* same as in PCMCIA */
+
+
+/*
+ * Function 1 miscellaneous registers.
+ *
+ * Definitions match src/include/sbsdio.h from the
+ * Android Open Source Project
+ * http://android.git.kernel.org/?p=platform/system/wlan/broadcom.git
+ *
+ */
+#define SBSDIO_FUNC1_SBADDRLOW	0x1000a	/* SB Address window Low (b15) */
+#define SBSDIO_FUNC1_SBADDRMID	0x1000b	/* SB Address window Mid (b23-b16) */
+#define SBSDIO_FUNC1_SBADDRHIGH	0x1000c	/* SB Address window High (b24-b31) */
+
+/* valid bits in SBSDIO_FUNC1_SBADDRxxx regs */
+#define SBSDIO_SBADDRLOW_MASK	0x80	/* Valid address bits in SBADDRLOW */
+#define SBSDIO_SBADDRMID_MASK	0xff	/* Valid address bits in SBADDRMID */
+#define SBSDIO_SBADDRHIGH_MASK	0xff	/* Valid address bits in SBADDRHIGH */
+
+#define SBSDIO_SB_OFT_ADDR_MASK	0x7FFF	/* sb offset addr is <= 15 bits, 32k */
+
+/* REVISIT: this flag doesn't seem to matter */
+#define SBSDIO_SB_ACCESS_2_4B_FLAG	0x8000	/* forces 32-bit SB access */
+
+
+/*
+ * Address map within the SDIO function address space (128K).
+ *
+ *   Start   End     Description
+ *   ------- ------- ------------------------------------------
+ *   0x00000 0x0ffff selected backplane address window (64K)
+ *   0x10000 0x1ffff backplane control registers (max 64K)
+ *
+ * The current address window is configured by writing to registers
+ * SBADDRLOW, SBADDRMID and SBADDRHIGH.
+ *
+ * In order to access the contents of a 32-bit Silicon Backplane address
+ * the backplane address window must be first loaded with the highest
+ * 16 bits of the target address. Then, an access must be done to the
+ * SDIO function address space using the lower 15 bits of the address.
+ * Bit 15 of the address must be set when doing 32 bit accesses.
+ *
+ * 10987654321098765432109876543210
+ * WWWWWWWWWWWWWWWWW                 SB Address Window
+ *                 OOOOOOOOOOOOOOOO  Offset within SB Address Window
+ *                 a                 32-bit access flag
+ */
+
+
+/*
+ * SSB I/O via SDIO.
+ *
+ * NOTE: SDIO address @addr is 17 bits long (SDIO address space is 128K).
+ */
+
+static inline struct device *ssb_sdio_dev(struct ssb_bus *bus)
+{
+	return &bus->host_sdio->dev;
+}
+
+/* host claimed */
+static int ssb_sdio_writeb(struct ssb_bus *bus, unsigned int addr, u8 val)
+{
+	int error = 0;
+
+	sdio_writeb(bus->host_sdio, val, addr, &error);
+	if (unlikely(error)) {
+		dev_dbg(ssb_sdio_dev(bus), "%08X <- %02x, error %d\n",
+			addr, val, error);
+	}
+
+	return error;
+}
+
+#if 0
+static u8 ssb_sdio_readb(struct ssb_bus *bus, unsigned int addr)
+{
+	u8 val;
+	int error = 0;
+
+	val = sdio_readb(bus->host_sdio, addr, &error);
+	if (unlikely(error)) {
+		dev_dbg(ssb_sdio_dev(bus), "%08X -> %02x, error %d\n",
+			addr, val, error);
+	}
+
+	return val;
+}
+#endif
+
+/* host claimed */
+static int ssb_sdio_set_sbaddr_window(struct ssb_bus *bus, u32 address)
+{
+	int error;
+
+	error = ssb_sdio_writeb(bus, SBSDIO_FUNC1_SBADDRLOW,
+				(address >> 8) & SBSDIO_SBADDRLOW_MASK);
+	if (error)
+		goto out;
+	error = ssb_sdio_writeb(bus, SBSDIO_FUNC1_SBADDRMID,
+				(address >> 16) & SBSDIO_SBADDRMID_MASK);
+	if (error)
+		goto out;
+	error = ssb_sdio_writeb(bus, SBSDIO_FUNC1_SBADDRHIGH,
+				(address >> 24) & SBSDIO_SBADDRHIGH_MASK);
+	if (error)
+		goto out;
+	bus->sdio_sbaddr = address;
+out:
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "failed to set address window"
+			" to 0x%08x, error %d\n", address, error);
+	}
+
+	return error;
+}
+
+/* for enumeration use only */
+u32 ssb_sdio_scan_read32(struct ssb_bus *bus, u16 offset)
+{
+	u32 val;
+	int error;
+
+	sdio_claim_host(bus->host_sdio);
+	val = sdio_readl(bus->host_sdio, offset, &error);
+	sdio_release_host(bus->host_sdio);
+	if (unlikely(error)) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %08x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+
+	return val;
+}
+
+/* for enumeration use only */
+int ssb_sdio_scan_switch_coreidx(struct ssb_bus *bus, u8 coreidx)
+{
+	u32 sbaddr;
+	int error;
+
+	sbaddr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE;
+	sdio_claim_host(bus->host_sdio);
+	error = ssb_sdio_set_sbaddr_window(bus, sbaddr);
+	sdio_release_host(bus->host_sdio);
+	if (error) {
+		dev_err(ssb_sdio_dev(bus), "failed to switch to core %u,"
+			" error %d\n", coreidx, error);
+		goto out;
+	}
+out:
+	return error;
+}
+
+/* host must be already claimed */
+static int ssb_sdio_switch_core(struct ssb_bus *bus, struct ssb_device *dev)
+{
+	u8 coreidx = dev->core_index;
+	u32 sbaddr;
+	int error = 0;
+
+	sbaddr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE;
+	if (unlikely(bus->sdio_sbaddr != sbaddr)) {
+#if SSB_VERBOSE_SDIOCORESWITCH_DEBUG
+		dev_info(ssb_sdio_dev(bus),
+			   "switching to %s core, index %d\n",
+			   ssb_core_name(dev->id.coreid), coreidx);
+#endif
+		error = ssb_sdio_set_sbaddr_window(bus, sbaddr);
+		if (error) {
+			dev_dbg(ssb_sdio_dev(bus), "failed to switch to"
+				" core %u, error %d\n", coreidx, error);
+			goto out;
+		}
+		bus->mapped_device = dev;
+	}
+
+out:
+	return error;
+}
+
+static u8 ssb_sdio_read8(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+	u8 val = 0xff;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	val = sdio_readb(bus->host_sdio, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %02x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+out:
+	sdio_release_host(bus->host_sdio);
+
+	return val;
+}
+
+static u16 ssb_sdio_read16(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+	u16 val = 0xffff;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	val = sdio_readw(bus->host_sdio, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %04x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+out:
+	sdio_release_host(bus->host_sdio);
+
+	return val;
+}
+
+static u32 ssb_sdio_read32(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+	u32 val = 0xffffffff;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	offset |= SBSDIO_SB_ACCESS_2_4B_FLAG;	/* 32 bit data access */
+	val = sdio_readl(bus->host_sdio, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %08x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+out:
+	sdio_release_host(bus->host_sdio);
+
+	return val;
+}
+
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_sdio_block_read(struct ssb_device *dev, void *buffer,
+				  size_t count, u16 offset, u8 reg_width)
+{
+	size_t saved_count = count;
+	struct ssb_bus *bus = dev->bus;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev))) {
+		error = -EIO;
+		memset(buffer, 0xff, count);
+		goto err_out;
+	}
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+
+	switch (reg_width) {
+	case sizeof(u8): {
+		error = sdio_readsb(bus->host_sdio, buffer, offset, count);
+		break;
+	}
+	case sizeof(u16): {
+		WARN_ON(count & 1);
+		error = sdio_readsb(bus->host_sdio, buffer, offset, count);
+		break;
+	}
+	case sizeof(u32): {
+		WARN_ON(count & 3);
+		offset |= SBSDIO_SB_ACCESS_2_4B_FLAG;	/* 32 bit data access */
+		error = sdio_readsb(bus->host_sdio, buffer, offset, count);
+		break;
+	}
+	default:
+		WARN_ON(1);
+	}
+	if (!error)
+		goto out;
+
+err_out:
+	dev_dbg(ssb_sdio_dev(bus), "%04X:%04X (width=%u, len=%zu), error %d\n",
+		bus->sdio_sbaddr >> 16, offset, reg_width, saved_count, error);
+out:
+	sdio_release_host(bus->host_sdio);
+}
+#endif /* CONFIG_SSB_BLOCKIO */
+
+static void ssb_sdio_write8(struct ssb_device *dev, u16 offset, u8 val)
+{
+	struct ssb_bus *bus = dev->bus;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	sdio_writeb(bus->host_sdio, val, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X < %02x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+out:
+	sdio_release_host(bus->host_sdio);
+}
+
+static void ssb_sdio_write16(struct ssb_device *dev, u16 offset, u16 val)
+{
+	struct ssb_bus *bus = dev->bus;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	sdio_writew(bus->host_sdio, val, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X < %04x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+out:
+	sdio_release_host(bus->host_sdio);
+}
+
+static void ssb_sdio_write32(struct ssb_device *dev, u16 offset, u32 val)
+{
+	struct ssb_bus *bus = dev->bus;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	offset |= SBSDIO_SB_ACCESS_2_4B_FLAG;	/* 32 bit data access */
+	sdio_writel(bus->host_sdio, val, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X < %08x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+	if (bus->quirks & SSB_QUIRK_SDIO_READ_AFTER_WRITE32)
+		sdio_readl(bus->host_sdio, 0, &error);
+out:
+	sdio_release_host(bus->host_sdio);
+}
+
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_sdio_block_write(struct ssb_device *dev, const void *buffer,
+				   size_t count, u16 offset, u8 reg_width)
+{
+	size_t saved_count = count;
+	struct ssb_bus *bus = dev->bus;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev))) {
+		error = -EIO;
+		goto err_out;
+	}
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+
+	switch (reg_width) {
+	case sizeof(u8):
+		error = sdio_writesb(bus->host_sdio, offset,
+				     (void *)buffer, count);
+		break;
+	case sizeof(u16):
+		WARN_ON(count & 1);
+		error = sdio_writesb(bus->host_sdio, offset,
+				     (void *)buffer, count);
+		break;
+	case sizeof(u32):
+		WARN_ON(count & 3);
+		offset |= SBSDIO_SB_ACCESS_2_4B_FLAG;	/* 32 bit data access */
+		error = sdio_writesb(bus->host_sdio, offset,
+				     (void *)buffer, count);
+		break;
+	default:
+		WARN_ON(1);
+	}
+	if (!error)
+		goto out;
+
+err_out:
+	dev_dbg(ssb_sdio_dev(bus), "%04X:%04X (width=%u, len=%zu), error %d\n",
+		bus->sdio_sbaddr >> 16, offset, reg_width, saved_count, error);
+out:
+	sdio_release_host(bus->host_sdio);
+}
+
+#endif /* CONFIG_SSB_BLOCKIO */
+
+/* Not "static", as it's used in main.c */
+const struct ssb_bus_ops ssb_sdio_ops = {
+	.read8		= ssb_sdio_read8,
+	.read16		= ssb_sdio_read16,
+	.read32		= ssb_sdio_read32,
+	.write8		= ssb_sdio_write8,
+	.write16	= ssb_sdio_write16,
+	.write32	= ssb_sdio_write32,
+#ifdef CONFIG_SSB_BLOCKIO
+	.block_read	= ssb_sdio_block_read,
+	.block_write	= ssb_sdio_block_write,
+#endif
+};
+
+#define GOTO_ERROR_ON(condition, description) do {	\
+	if (unlikely(condition)) {			\
+		error_description = description;	\
+		goto error;				\
+	}						\
+  } while (0)
+
+int ssb_sdio_get_invariants(struct ssb_bus *bus,
+			    struct ssb_init_invariants *iv)
+{
+	struct ssb_sprom *sprom = &iv->sprom;
+	struct ssb_boardinfo *bi = &iv->boardinfo;
+	const char *error_description = "none";
+	struct sdio_func_tuple *tuple;
+	void *mac;
+
+	memset(sprom, 0xFF, sizeof(*sprom));
+	sprom->boardflags_lo = 0;
+	sprom->boardflags_hi = 0;
+
+	tuple = bus->host_sdio->tuples;
+	while (tuple) {
+		switch (tuple->code) {
+		case 0x22: /* extended function */
+			switch (tuple->data[0]) {
+			case CISTPL_FUNCE_LAN_NODE_ID:
+				GOTO_ERROR_ON((tuple->size != 7) &&
+					      (tuple->data[1] != 6),
+					      "mac tpl size");
+				/* fetch the MAC address. */
+				mac = tuple->data + 2;
+				memcpy(sprom->il0mac, mac, ETH_ALEN);
+				memcpy(sprom->et1mac, mac, ETH_ALEN);
+				break;
+			default:
+				break;
+			}
+			break;
+		case 0x80: /* vendor specific tuple */
+			switch (tuple->data[0]) {
+			case SSB_SDIO_CIS_SROMREV:
+				GOTO_ERROR_ON(tuple->size != 2,
+					      "sromrev tpl size");
+				sprom->revision = tuple->data[1];
+				break;
+			case SSB_SDIO_CIS_ID:
+				GOTO_ERROR_ON((tuple->size != 5) &&
+					      (tuple->size != 7),
+					      "id tpl size");
+				bi->vendor = tuple->data[1] |
+					     (tuple->data[2]<<8);
+				break;
+			case SSB_SDIO_CIS_BOARDREV:
+				GOTO_ERROR_ON(tuple->size != 2,
+					      "boardrev tpl size");
+				sprom->board_rev = tuple->data[1];
+				break;
+			case SSB_SDIO_CIS_PA:
+				GOTO_ERROR_ON((tuple->size != 9) &&
+					      (tuple->size != 10),
+					      "pa tpl size");
+				sprom->pa0b0 = tuple->data[1] |
+					 ((u16)tuple->data[2] << 8);
+				sprom->pa0b1 = tuple->data[3] |
+					 ((u16)tuple->data[4] << 8);
+				sprom->pa0b2 = tuple->data[5] |
+					 ((u16)tuple->data[6] << 8);
+				sprom->itssi_a = tuple->data[7];
+				sprom->itssi_bg = tuple->data[7];
+				sprom->maxpwr_a = tuple->data[8];
+				sprom->maxpwr_bg = tuple->data[8];
+				break;
+			case SSB_SDIO_CIS_OEMNAME:
+				/* Not present */
+				break;
+			case SSB_SDIO_CIS_CCODE:
+				GOTO_ERROR_ON(tuple->size != 2,
+					      "ccode tpl size");
+				sprom->country_code = tuple->data[1];
+				break;
+			case SSB_SDIO_CIS_ANTENNA:
+				GOTO_ERROR_ON(tuple->size != 2,
+					      "ant tpl size");
+				sprom->ant_available_a = tuple->data[1];
+				sprom->ant_available_bg = tuple->data[1];
+				break;
+			case SSB_SDIO_CIS_ANTGAIN:
+				GOTO_ERROR_ON(tuple->size != 2,
+					      "antg tpl size");
+				sprom->antenna_gain.a0 = tuple->data[1];
+				sprom->antenna_gain.a1 = tuple->data[1];
+				sprom->antenna_gain.a2 = tuple->data[1];
+				sprom->antenna_gain.a3 = tuple->data[1];
+				break;
+			case SSB_SDIO_CIS_BFLAGS:
+				GOTO_ERROR_ON((tuple->size != 3) &&
+					      (tuple->size != 5),
+					      "bfl tpl size");
+				sprom->boardflags_lo = tuple->data[1] |
+						 ((u16)tuple->data[2] << 8);
+				break;
+			case SSB_SDIO_CIS_LEDS:
+				GOTO_ERROR_ON(tuple->size != 5,
+					      "leds tpl size");
+				sprom->gpio0 = tuple->data[1];
+				sprom->gpio1 = tuple->data[2];
+				sprom->gpio2 = tuple->data[3];
+				sprom->gpio3 = tuple->data[4];
+				break;
+			default:
+				break;
+			}
+			break;
+		default:
+			break;
+		}
+		tuple = tuple->next;
+	}
+
+	return 0;
+error:
+	dev_err(ssb_sdio_dev(bus), "failed to fetch device invariants: %s\n",
+		error_description);
+	return -ENODEV;
+}
+
+void ssb_sdio_exit(struct ssb_bus *bus)
+{
+	if (bus->bustype != SSB_BUSTYPE_SDIO)
+		return;
+	/* Nothing to do here. */
+}
+
+int ssb_sdio_init(struct ssb_bus *bus)
+{
+	if (bus->bustype != SSB_BUSTYPE_SDIO)
+		return 0;
+
+	bus->sdio_sbaddr = ~0;
+
+	return 0;
+}