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, 827 insertions, 0 deletions

diff --git a/sound/drivers/vx/vx_core.c b/sound/drivers/vx/vx_core.c
new file mode 100644
index 000000000..18901e5bc
--- /dev/null
+++ b/sound/drivers/vx/vx_core.c
@@ -0,0 +1,827 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Driver for Digigram VX soundcards
+ *
+ * Hardware core part
+ *
+ * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
+ */
+
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/asoundef.h>
+#include <sound/info.h>
+#include <sound/vx_core.h>
+#include "vx_cmd.h"
+
+MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
+MODULE_DESCRIPTION("Common routines for Digigram VX drivers");
+MODULE_LICENSE("GPL");
+
+
+/*
+ * vx_check_reg_bit - wait for the specified bit is set/reset on a register
+ * @reg: register to check
+ * @mask: bit mask
+ * @bit: resultant bit to be checked
+ * @time: time-out of loop in msec
+ *
+ * returns zero if a bit matches, or a negative error code.
+ */
+int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time)
+{
+	unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
+	static const char * const reg_names[VX_REG_MAX] = {
+		"ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL",
+		"DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ",
+		"ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2",
+		"MIC3", "INTCSR", "CNTRL", "GPIOC",
+		"LOFREQ", "HIFREQ", "CSUER", "RUER"
+	};
+
+	do {
+		if ((snd_vx_inb(chip, reg) & mask) == bit)
+			return 0;
+		//msleep(10);
+	} while (time_after_eq(end_time, jiffies));
+	snd_printd(KERN_DEBUG "vx_check_reg_bit: timeout, reg=%s, mask=0x%x, val=0x%x\n", reg_names[reg], mask, snd_vx_inb(chip, reg));
+	return -EIO;
+}
+
+EXPORT_SYMBOL(snd_vx_check_reg_bit);
+
+/*
+ * vx_send_irq_dsp - set command irq bit
+ * @num: the requested IRQ type, IRQ_XXX
+ *
+ * this triggers the specified IRQ request
+ * returns 0 if successful, or a negative error code.
+ * 
+ */
+static int vx_send_irq_dsp(struct vx_core *chip, int num)
+{
+	int nirq;
+
+	/* wait for Hc = 0 */
+	if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0)
+		return -EIO;
+
+	nirq = num;
+	if (vx_has_new_dsp(chip))
+		nirq += VXP_IRQ_OFFSET;
+	vx_outb(chip, CVR, (nirq >> 1) | CVR_HC);
+	return 0;
+}
+
+
+/*
+ * vx_reset_chk - reset CHK bit on ISR
+ *
+ * returns 0 if successful, or a negative error code.
+ */
+static int vx_reset_chk(struct vx_core *chip)
+{
+	/* Reset irq CHK */
+	if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0)
+		return -EIO;
+	/* Wait until CHK = 0 */
+	if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0)
+		return -EIO;
+	return 0;
+}
+
+/*
+ * vx_transfer_end - terminate message transfer
+ * @cmd: IRQ message to send (IRQ_MESS_XXX_END)
+ *
+ * returns 0 if successful, or a negative error code.
+ * the error code can be VX-specific, retrieved via vx_get_error().
+ * NB: call with mutex held!
+ */
+static int vx_transfer_end(struct vx_core *chip, int cmd)
+{
+	int err;
+
+	err = vx_reset_chk(chip);
+	if (err < 0)
+		return err;
+
+	/* irq MESS_READ/WRITE_END */
+	err = vx_send_irq_dsp(chip, cmd);
+	if (err < 0)
+		return err;
+
+	/* Wait CHK = 1 */
+	err = vx_wait_isr_bit(chip, ISR_CHK);
+	if (err < 0)
+		return err;
+
+	/* If error, Read RX */
+	err = vx_inb(chip, ISR);
+	if (err & ISR_ERR) {
+		err = vx_wait_for_rx_full(chip);
+		if (err < 0) {
+			snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n");
+			return err;
+		}
+		err = vx_inb(chip, RXH) << 16;
+		err |= vx_inb(chip, RXM) << 8;
+		err |= vx_inb(chip, RXL);
+		snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err);
+		return -(VX_ERR_MASK | err);
+	}
+	return 0;
+}
+
+/*
+ * vx_read_status - return the status rmh
+ * @rmh: rmh record to store the status
+ *
+ * returns 0 if successful, or a negative error code.
+ * the error code can be VX-specific, retrieved via vx_get_error().
+ * NB: call with mutex held!
+ */
+static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh)
+{
+	int i, err, val, size;
+
+	/* no read necessary? */
+	if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0)
+		return 0;
+
+	/* Wait for RX full (with timeout protection)
+	 * The first word of status is in RX
+	 */
+	err = vx_wait_for_rx_full(chip);
+	if (err < 0)
+		return err;
+
+	/* Read RX */
+	val = vx_inb(chip, RXH) << 16;
+	val |= vx_inb(chip, RXM) << 8;
+	val |= vx_inb(chip, RXL);
+
+	/* If status given by DSP, let's decode its size */
+	switch (rmh->DspStat) {
+	case RMH_SSIZE_ARG:
+		size = val & 0xff;
+		rmh->Stat[0] = val & 0xffff00;
+		rmh->LgStat = size + 1;
+		break;
+	case RMH_SSIZE_MASK:
+		/* Let's count the arg numbers from a mask */
+		rmh->Stat[0] = val;
+		size = 0;
+		while (val) {
+			if (val & 0x01)
+				size++;
+			val >>= 1;
+		}
+		rmh->LgStat = size + 1;
+		break;
+	default:
+		/* else retrieve the status length given by the driver */
+		size = rmh->LgStat;
+		rmh->Stat[0] = val;  /* Val is the status 1st word */
+		size--;              /* hence adjust remaining length */
+		break;
+        }
+
+	if (size < 1)
+		return 0;
+	if (snd_BUG_ON(size >= SIZE_MAX_STATUS))
+		return -EINVAL;
+
+	for (i = 1; i <= size; i++) {
+		/* trigger an irq MESS_WRITE_NEXT */
+		err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT);
+		if (err < 0)
+			return err;
+		/* Wait for RX full (with timeout protection) */
+		err = vx_wait_for_rx_full(chip);
+		if (err < 0)
+			return err;
+		rmh->Stat[i] = vx_inb(chip, RXH) << 16;
+		rmh->Stat[i] |= vx_inb(chip, RXM) <<  8;
+		rmh->Stat[i] |= vx_inb(chip, RXL);
+	}
+
+	return vx_transfer_end(chip, IRQ_MESS_WRITE_END);
+}
+
+
+#define MASK_MORE_THAN_1_WORD_COMMAND   0x00008000
+#define MASK_1_WORD_COMMAND             0x00ff7fff
+
+/*
+ * vx_send_msg_nolock - send a DSP message and read back the status
+ * @rmh: the rmh record to send and receive
+ *
+ * returns 0 if successful, or a negative error code.
+ * the error code can be VX-specific, retrieved via vx_get_error().
+ * 
+ * this function doesn't call mutex lock at all.
+ */
+int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh)
+{
+	int i, err;
+	
+	if (chip->chip_status & VX_STAT_IS_STALE)
+		return -EBUSY;
+
+	err = vx_reset_chk(chip);
+	if (err < 0) {
+		snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n");
+		return err;
+	}
+
+#if 0
+	printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n",
+	       rmh->Cmd[0], rmh->LgCmd, rmh->DspStat);
+	if (rmh->LgCmd > 1) {
+		printk(KERN_DEBUG "  ");
+		for (i = 1; i < rmh->LgCmd; i++)
+			printk(KERN_CONT "0x%06x ", rmh->Cmd[i]);
+		printk(KERN_CONT "\n");
+	}
+#endif
+	/* Check bit M is set according to length of the command */
+	if (rmh->LgCmd > 1)
+		rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND;
+	else
+		rmh->Cmd[0] &= MASK_1_WORD_COMMAND;
+
+	/* Wait for TX empty */
+	err = vx_wait_isr_bit(chip, ISR_TX_EMPTY);
+	if (err < 0) {
+		snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n");
+		return err;
+	}
+
+	/* Write Cmd[0] */
+	vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff);
+	vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff);
+	vx_outb(chip, TXL, rmh->Cmd[0] & 0xff);
+
+	/* Trigger irq MESSAGE */
+	err = vx_send_irq_dsp(chip, IRQ_MESSAGE);
+	if (err < 0) {
+		snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n");
+		return err;
+	}
+
+	/* Wait for CHK = 1 */
+	err = vx_wait_isr_bit(chip, ISR_CHK);
+	if (err < 0)
+		return err;
+
+	/* If error, get error value from RX */
+	if (vx_inb(chip, ISR) & ISR_ERR) {
+		err = vx_wait_for_rx_full(chip);
+		if (err < 0) {
+			snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n");
+			return err;
+		}
+		err = vx_inb(chip, RXH) << 16;
+		err |= vx_inb(chip, RXM) << 8;
+		err |= vx_inb(chip, RXL);
+		snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err);
+		err = -(VX_ERR_MASK | err);
+		return err;
+	}
+
+	/* Send the other words */
+	if (rmh->LgCmd > 1) {
+		for (i = 1; i < rmh->LgCmd; i++) {
+			/* Wait for TX ready */
+			err = vx_wait_isr_bit(chip, ISR_TX_READY);
+			if (err < 0) {
+				snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n");
+				return err;
+			}
+
+			/* Write Cmd[i] */
+			vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff);
+			vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff);
+			vx_outb(chip, TXL, rmh->Cmd[i] & 0xff);
+
+			/* Trigger irq MESS_READ_NEXT */
+			err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT);
+			if (err < 0) {
+				snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n");
+				return err;
+			}
+		}
+		/* Wait for TX empty */
+		err = vx_wait_isr_bit(chip, ISR_TX_READY);
+		if (err < 0) {
+			snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n");
+			return err;
+		}
+		/* End of transfer */
+		err = vx_transfer_end(chip, IRQ_MESS_READ_END);
+		if (err < 0)
+			return err;
+	}
+
+	return vx_read_status(chip, rmh);
+}
+
+
+/*
+ * vx_send_msg - send a DSP message with mutex
+ * @rmh: the rmh record to send and receive
+ *
+ * returns 0 if successful, or a negative error code.
+ * see vx_send_msg_nolock().
+ */
+int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh)
+{
+	int err;
+
+	mutex_lock(&chip->lock);
+	err = vx_send_msg_nolock(chip, rmh);
+	mutex_unlock(&chip->lock);
+	return err;
+}
+
+
+/*
+ * vx_send_rih_nolock - send an RIH to xilinx
+ * @cmd: the command to send
+ *
+ * returns 0 if successful, or a negative error code.
+ * the error code can be VX-specific, retrieved via vx_get_error().
+ *
+ * this function doesn't call mutex at all.
+ *
+ * unlike RMH, no command is sent to DSP.
+ */
+int vx_send_rih_nolock(struct vx_core *chip, int cmd)
+{
+	int err;
+
+	if (chip->chip_status & VX_STAT_IS_STALE)
+		return -EBUSY;
+
+#if 0
+	printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd);
+#endif
+	err = vx_reset_chk(chip);
+	if (err < 0)
+		return err;
+	/* send the IRQ */
+	err = vx_send_irq_dsp(chip, cmd);
+	if (err < 0)
+		return err;
+	/* Wait CHK = 1 */
+	err = vx_wait_isr_bit(chip, ISR_CHK);
+	if (err < 0)
+		return err;
+	/* If error, read RX */
+	if (vx_inb(chip, ISR) & ISR_ERR) {
+		err = vx_wait_for_rx_full(chip);
+		if (err < 0)
+			return err;
+		err = vx_inb(chip, RXH) << 16;
+		err |= vx_inb(chip, RXM) << 8;
+		err |= vx_inb(chip, RXL);
+		return -(VX_ERR_MASK | err);
+	}
+	return 0;
+}
+
+
+/*
+ * vx_send_rih - send an RIH with mutex
+ * @cmd: the command to send
+ *
+ * see vx_send_rih_nolock().
+ */
+int vx_send_rih(struct vx_core *chip, int cmd)
+{
+	int err;
+
+	mutex_lock(&chip->lock);
+	err = vx_send_rih_nolock(chip, cmd);
+	mutex_unlock(&chip->lock);
+	return err;
+}
+
+#define END_OF_RESET_WAIT_TIME		500	/* us */
+
+/**
+ * snd_vx_load_boot_image - boot up the xilinx interface
+ * @chip: VX core instance
+ * @boot: the boot record to load
+ */
+int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot)
+{
+	unsigned int i;
+	int no_fillup = vx_has_new_dsp(chip);
+
+	/* check the length of boot image */
+	if (boot->size <= 0)
+		return -EINVAL;
+	if (boot->size % 3)
+		return -EINVAL;
+#if 0
+	{
+		/* more strict check */
+		unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2];
+		if (boot->size != (c + 2) * 3)
+			return -EINVAL;
+	}
+#endif
+
+	/* reset dsp */
+	vx_reset_dsp(chip);
+	
+	udelay(END_OF_RESET_WAIT_TIME); /* another wait? */
+
+	/* download boot strap */
+	for (i = 0; i < 0x600; i += 3) {
+		if (i >= boot->size) {
+			if (no_fillup)
+				break;
+			if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
+				snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
+				return -EIO;
+			}
+			vx_outb(chip, TXH, 0);
+			vx_outb(chip, TXM, 0);
+			vx_outb(chip, TXL, 0);
+		} else {
+			const unsigned char *image = boot->data + i;
+			if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
+				snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
+				return -EIO;
+			}
+			vx_outb(chip, TXH, image[0]);
+			vx_outb(chip, TXM, image[1]);
+			vx_outb(chip, TXL, image[2]);
+		}
+	}
+	return 0;
+}
+
+EXPORT_SYMBOL(snd_vx_load_boot_image);
+
+/*
+ * vx_test_irq_src - query the source of interrupts
+ *
+ * called from irq handler only
+ */
+static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret)
+{
+	int err;
+
+	vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT);
+	mutex_lock(&chip->lock);
+	err = vx_send_msg_nolock(chip, &chip->irq_rmh);
+	if (err < 0)
+		*ret = 0;
+	else
+		*ret = chip->irq_rmh.Stat[0];
+	mutex_unlock(&chip->lock);
+	return err;
+}
+
+
+/*
+ * snd_vx_threaded_irq_handler - threaded irq handler
+ */
+irqreturn_t snd_vx_threaded_irq_handler(int irq, void *dev)
+{
+	struct vx_core *chip = dev;
+	unsigned int events;
+		
+	if (chip->chip_status & VX_STAT_IS_STALE)
+		return IRQ_HANDLED;
+
+	if (vx_test_irq_src(chip, &events) < 0)
+		return IRQ_HANDLED;
+    
+#if 0
+	if (events & 0x000800)
+		printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events);
+#endif
+	// printk(KERN_DEBUG "IRQ events = 0x%x\n", events);
+
+	/* We must prevent any application using this DSP
+	 * and block any further request until the application
+	 * either unregisters or reloads the DSP
+	 */
+	if (events & FATAL_DSP_ERROR) {
+		snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n");
+		return IRQ_HANDLED;
+	}
+
+	/* The start on time code conditions are filled (ie the time code
+	 * received by the board is equal to one of those given to it).
+	 */
+	if (events & TIME_CODE_EVENT_PENDING) {
+		; /* so far, nothing to do yet */
+	}
+
+	/* The frequency has changed on the board (UER mode). */
+	if (events & FREQUENCY_CHANGE_EVENT_PENDING)
+		vx_change_frequency(chip);
+
+	/* update the pcm streams */
+	vx_pcm_update_intr(chip, events);
+	return IRQ_HANDLED;
+}
+EXPORT_SYMBOL(snd_vx_threaded_irq_handler);
+
+/**
+ * snd_vx_irq_handler - interrupt handler
+ * @irq: irq number
+ * @dev: VX core instance
+ */
+irqreturn_t snd_vx_irq_handler(int irq, void *dev)
+{
+	struct vx_core *chip = dev;
+
+	if (! (chip->chip_status & VX_STAT_CHIP_INIT) ||
+	    (chip->chip_status & VX_STAT_IS_STALE))
+		return IRQ_NONE;
+	if (! vx_test_and_ack(chip))
+		return IRQ_WAKE_THREAD;
+	return IRQ_NONE;
+}
+
+EXPORT_SYMBOL(snd_vx_irq_handler);
+
+/*
+ */
+static void vx_reset_board(struct vx_core *chip, int cold_reset)
+{
+	if (snd_BUG_ON(!chip->ops->reset_board))
+		return;
+
+	/* current source, later sync'ed with target */
+	chip->audio_source = VX_AUDIO_SRC_LINE;
+	if (cold_reset) {
+		chip->audio_source_target = chip->audio_source;
+		chip->clock_source = INTERNAL_QUARTZ;
+		chip->clock_mode = VX_CLOCK_MODE_AUTO;
+		chip->freq = 48000;
+		chip->uer_detected = VX_UER_MODE_NOT_PRESENT;
+		chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
+	}
+
+	chip->ops->reset_board(chip, cold_reset);
+
+	vx_reset_codec(chip, cold_reset);
+
+	vx_set_internal_clock(chip, chip->freq);
+
+	/* Reset the DSP */
+	vx_reset_dsp(chip);
+
+	if (vx_is_pcmcia(chip)) {
+		/* Acknowledge any pending IRQ and reset the MEMIRQ flag. */
+		vx_test_and_ack(chip);
+		vx_validate_irq(chip, 1);
+	}
+
+	/* init CBits */
+	vx_set_iec958_status(chip, chip->uer_bits);
+}
+
+
+/*
+ * proc interface
+ */
+
+static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
+{
+	struct vx_core *chip = entry->private_data;
+	static const char * const audio_src_vxp[] = { "Line", "Mic", "Digital" };
+	static const char * const audio_src_vx2[] = { "Analog", "Analog", "Digital" };
+	static const char * const clock_mode[] = { "Auto", "Internal", "External" };
+	static const char * const clock_src[] = { "Internal", "External" };
+	static const char * const uer_type[] = { "Consumer", "Professional", "Not Present" };
+	
+	snd_iprintf(buffer, "%s\n", chip->card->longname);
+	snd_iprintf(buffer, "Xilinx Firmware: %s\n",
+		    (chip->chip_status & VX_STAT_XILINX_LOADED) ? "Loaded" : "No");
+	snd_iprintf(buffer, "Device Initialized: %s\n",
+		    (chip->chip_status & VX_STAT_DEVICE_INIT) ? "Yes" : "No");
+	snd_iprintf(buffer, "DSP audio info:");
+	if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME)
+		snd_iprintf(buffer, " realtime");
+	if (chip->audio_info & VX_AUDIO_INFO_OFFLINE)
+		snd_iprintf(buffer, " offline");
+	if (chip->audio_info & VX_AUDIO_INFO_MPEG1)
+		snd_iprintf(buffer, " mpeg1");
+	if (chip->audio_info & VX_AUDIO_INFO_MPEG2)
+		snd_iprintf(buffer, " mpeg2");
+	if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8)
+		snd_iprintf(buffer, " linear8");
+	if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16)
+		snd_iprintf(buffer, " linear16");
+	if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24)
+		snd_iprintf(buffer, " linear24");
+	snd_iprintf(buffer, "\n");
+	snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ?
+		    audio_src_vxp[chip->audio_source] :
+		    audio_src_vx2[chip->audio_source]);
+	snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]);
+	snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]);
+	snd_iprintf(buffer, "Frequency: %d\n", chip->freq);
+	snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected);
+	snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]);
+	snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n",
+		    chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size,
+		    chip->ibl.granularity);
+}
+
+static void vx_proc_init(struct vx_core *chip)
+{
+	snd_card_ro_proc_new(chip->card, "vx-status", chip, vx_proc_read);
+}
+
+
+/**
+ * snd_vx_dsp_boot - load the DSP boot
+ * @chip: VX core instance
+ * @boot: firmware data
+ */
+int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot)
+{
+	int err;
+	int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT);
+
+	vx_reset_board(chip, cold_reset);
+	vx_validate_irq(chip, 0);
+
+	err = snd_vx_load_boot_image(chip, boot);
+	if (err < 0)
+		return err;
+	msleep(10);
+
+	return 0;
+}
+
+EXPORT_SYMBOL(snd_vx_dsp_boot);
+
+/**
+ * snd_vx_dsp_load - load the DSP image
+ * @chip: VX core instance
+ * @dsp: firmware data
+ */
+int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
+{
+	unsigned int i;
+	int err;
+	unsigned int csum = 0;
+	const unsigned char *image, *cptr;
+
+	if (dsp->size % 3)
+		return -EINVAL;
+
+	vx_toggle_dac_mute(chip, 1);
+
+	/* Transfert data buffer from PC to DSP */
+	for (i = 0; i < dsp->size; i += 3) {
+		image = dsp->data + i;
+		/* Wait DSP ready for a new read */
+		err = vx_wait_isr_bit(chip, ISR_TX_EMPTY);
+		if (err < 0) {
+			printk(KERN_ERR
+			       "dsp loading error at position %d\n", i);
+			return err;
+		}
+		cptr = image;
+		csum ^= *cptr;
+		csum = (csum >> 24) | (csum << 8);
+		vx_outb(chip, TXH, *cptr++);
+		csum ^= *cptr;
+		csum = (csum >> 24) | (csum << 8);
+		vx_outb(chip, TXM, *cptr++);
+		csum ^= *cptr;
+		csum = (csum >> 24) | (csum << 8);
+		vx_outb(chip, TXL, *cptr++);
+	}
+	snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum);
+
+	msleep(200);
+
+	err = vx_wait_isr_bit(chip, ISR_CHK);
+	if (err < 0)
+		return err;
+
+	vx_toggle_dac_mute(chip, 0);
+
+	vx_test_and_ack(chip);
+	vx_validate_irq(chip, 1);
+
+	return 0;
+}
+
+EXPORT_SYMBOL(snd_vx_dsp_load);
+
+#ifdef CONFIG_PM
+/*
+ * suspend
+ */
+int snd_vx_suspend(struct vx_core *chip)
+{
+	snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
+	chip->chip_status |= VX_STAT_IN_SUSPEND;
+
+	return 0;
+}
+
+EXPORT_SYMBOL(snd_vx_suspend);
+
+/*
+ * resume
+ */
+int snd_vx_resume(struct vx_core *chip)
+{
+	int i, err;
+
+	chip->chip_status &= ~VX_STAT_CHIP_INIT;
+
+	for (i = 0; i < 4; i++) {
+		if (! chip->firmware[i])
+			continue;
+		err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
+		if (err < 0) {
+			snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i);
+			return -EIO;
+		}
+	}
+
+	chip->chip_status |= VX_STAT_CHIP_INIT;
+	chip->chip_status &= ~VX_STAT_IN_SUSPEND;
+
+	snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
+	return 0;
+}
+
+EXPORT_SYMBOL(snd_vx_resume);
+#endif
+
+static void snd_vx_release(struct device *dev, void *data)
+{
+	snd_vx_free_firmware(data);
+}
+
+/**
+ * snd_vx_create - constructor for struct vx_core
+ * @card: card instance
+ * @hw: hardware specific record
+ * @ops: VX ops pointer
+ * @extra_size: extra byte size to allocate appending to chip
+ *
+ * this function allocates the instance and prepare for the hardware
+ * initialization.
+ *
+ * The object is managed via devres, and will be automatically released.
+ *
+ * return the instance pointer if successful, NULL in error.
+ */
+struct vx_core *snd_vx_create(struct snd_card *card,
+			      const struct snd_vx_hardware *hw,
+			      const struct snd_vx_ops *ops,
+			      int extra_size)
+{
+	struct vx_core *chip;
+
+	if (snd_BUG_ON(!card || !hw || !ops))
+		return NULL;
+
+	chip = devres_alloc(snd_vx_release, sizeof(*chip) + extra_size,
+			    GFP_KERNEL);
+	if (!chip)
+		return NULL;
+	mutex_init(&chip->lock);
+	chip->irq = -1;
+	chip->hw = hw;
+	chip->type = hw->type;
+	chip->ops = ops;
+	mutex_init(&chip->mixer_mutex);
+
+	chip->card = card;
+	card->private_data = chip;
+	strcpy(card->driver, hw->name);
+	sprintf(card->shortname, "Digigram %s", hw->name);
+
+	vx_proc_init(chip);
+
+	return chip;
+}
+
+EXPORT_SYMBOL(snd_vx_create);