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, 723 insertions, 0 deletions

diff --git a/sound/core/seq/seq_midi_emul.c b/sound/core/seq/seq_midi_emul.c
new file mode 100644
index 000000000..81d2ef5e5
--- /dev/null
+++ b/sound/core/seq/seq_midi_emul.c
@@ -0,0 +1,723 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  GM/GS/XG midi module.
+ *
+ *  Copyright (C) 1999 Steve Ratcliffe
+ *
+ *  Based on awe_wave.c by Takashi Iwai
+ */
+/*
+ * This module is used to keep track of the current midi state.
+ * It can be used for drivers that are required to emulate midi when
+ * the hardware doesn't.
+ *
+ * It was written for a AWE64 driver, but there should be no AWE specific
+ * code in here.  If there is it should be reported as a bug.
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/seq_kernel.h>
+#include <sound/seq_midi_emul.h>
+#include <sound/initval.h>
+#include <sound/asoundef.h>
+
+MODULE_AUTHOR("Takashi Iwai / Steve Ratcliffe");
+MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer MIDI emulation.");
+MODULE_LICENSE("GPL");
+
+/* Prototypes for static functions */
+static void note_off(const struct snd_midi_op *ops, void *drv,
+		     struct snd_midi_channel *chan,
+		     int note, int vel);
+static void do_control(const struct snd_midi_op *ops, void *private,
+		       struct snd_midi_channel_set *chset,
+		       struct snd_midi_channel *chan,
+		       int control, int value);
+static void rpn(const struct snd_midi_op *ops, void *drv,
+		struct snd_midi_channel *chan,
+		struct snd_midi_channel_set *chset);
+static void nrpn(const struct snd_midi_op *ops, void *drv,
+		 struct snd_midi_channel *chan,
+		 struct snd_midi_channel_set *chset);
+static void sysex(const struct snd_midi_op *ops, void *private,
+		  unsigned char *sysex,
+		  int len, struct snd_midi_channel_set *chset);
+static void all_sounds_off(const struct snd_midi_op *ops, void *private,
+			   struct snd_midi_channel *chan);
+static void all_notes_off(const struct snd_midi_op *ops, void *private,
+			  struct snd_midi_channel *chan);
+static void snd_midi_reset_controllers(struct snd_midi_channel *chan);
+static void reset_all_channels(struct snd_midi_channel_set *chset);
+
+
+/*
+ * Process an event in a driver independent way.  This means dealing
+ * with RPN, NRPN, SysEx etc that are defined for common midi applications
+ * such as GM, GS and XG.
+ * There modes that this module will run in are:
+ *   Generic MIDI - no interpretation at all, it will just save current values
+ *                  of controllers etc.
+ *   GM - You can use all gm_ prefixed elements of chan.  Controls, RPN, NRPN,
+ *        SysEx will be interpreded as defined in General Midi.
+ *   GS - You can use all gs_ prefixed elements of chan. Codes for GS will be
+ *        interpreted.
+ *   XG - You can use all xg_ prefixed elements of chan.  Codes for XG will
+ *        be interpreted.
+ */
+void
+snd_midi_process_event(const struct snd_midi_op *ops,
+		       struct snd_seq_event *ev,
+		       struct snd_midi_channel_set *chanset)
+{
+	struct snd_midi_channel *chan;
+	void *drv;
+	int dest_channel = 0;
+
+	if (ev == NULL || chanset == NULL) {
+		pr_debug("ALSA: seq_midi_emul: ev or chanbase NULL (snd_midi_process_event)\n");
+		return;
+	}
+	if (chanset->channels == NULL)
+		return;
+
+	if (snd_seq_ev_is_channel_type(ev)) {
+		dest_channel = ev->data.note.channel;
+		if (dest_channel >= chanset->max_channels) {
+			pr_debug("ALSA: seq_midi_emul: dest channel is %d, max is %d\n",
+				   dest_channel, chanset->max_channels);
+			return;
+		}
+	}
+
+	chan = chanset->channels + dest_channel;
+	drv  = chanset->private_data;
+
+	/* EVENT_NOTE should be processed before queued */
+	if (ev->type == SNDRV_SEQ_EVENT_NOTE)
+		return;
+
+	/* Make sure that we don't have a note on that should really be
+	 * a note off */
+	if (ev->type == SNDRV_SEQ_EVENT_NOTEON && ev->data.note.velocity == 0)
+		ev->type = SNDRV_SEQ_EVENT_NOTEOFF;
+
+	/* Make sure the note is within array range */
+	if (ev->type == SNDRV_SEQ_EVENT_NOTEON ||
+	    ev->type == SNDRV_SEQ_EVENT_NOTEOFF ||
+	    ev->type == SNDRV_SEQ_EVENT_KEYPRESS) {
+		if (ev->data.note.note >= 128)
+			return;
+	}
+
+	switch (ev->type) {
+	case SNDRV_SEQ_EVENT_NOTEON:
+		if (chan->note[ev->data.note.note] & SNDRV_MIDI_NOTE_ON) {
+			if (ops->note_off)
+				ops->note_off(drv, ev->data.note.note, 0, chan);
+		}
+		chan->note[ev->data.note.note] = SNDRV_MIDI_NOTE_ON;
+		if (ops->note_on)
+			ops->note_on(drv, ev->data.note.note, ev->data.note.velocity, chan);
+		break;
+	case SNDRV_SEQ_EVENT_NOTEOFF:
+		if (! (chan->note[ev->data.note.note] & SNDRV_MIDI_NOTE_ON))
+			break;
+		if (ops->note_off)
+			note_off(ops, drv, chan, ev->data.note.note, ev->data.note.velocity);
+		break;
+	case SNDRV_SEQ_EVENT_KEYPRESS:
+		if (ops->key_press)
+			ops->key_press(drv, ev->data.note.note, ev->data.note.velocity, chan);
+		break;
+	case SNDRV_SEQ_EVENT_CONTROLLER:
+		do_control(ops, drv, chanset, chan,
+			   ev->data.control.param, ev->data.control.value);
+		break;
+	case SNDRV_SEQ_EVENT_PGMCHANGE:
+		chan->midi_program = ev->data.control.value;
+		break;
+	case SNDRV_SEQ_EVENT_PITCHBEND:
+		chan->midi_pitchbend = ev->data.control.value;
+		if (ops->control)
+			ops->control(drv, MIDI_CTL_PITCHBEND, chan);
+		break;
+	case SNDRV_SEQ_EVENT_CHANPRESS:
+		chan->midi_pressure = ev->data.control.value;
+		if (ops->control)
+			ops->control(drv, MIDI_CTL_CHAN_PRESSURE, chan);
+		break;
+	case SNDRV_SEQ_EVENT_CONTROL14:
+		/* Best guess is that this is any of the 14 bit controller values */
+		if (ev->data.control.param < 32) {
+			/* set low part first */
+			chan->control[ev->data.control.param + 32] =
+				ev->data.control.value & 0x7f;
+			do_control(ops, drv, chanset, chan,
+				   ev->data.control.param,
+				   ((ev->data.control.value>>7) & 0x7f));
+		} else
+			do_control(ops, drv, chanset, chan,
+				   ev->data.control.param,
+				   ev->data.control.value);
+		break;
+	case SNDRV_SEQ_EVENT_NONREGPARAM:
+		/* Break it back into its controller values */
+		chan->param_type = SNDRV_MIDI_PARAM_TYPE_NONREGISTERED;
+		chan->control[MIDI_CTL_MSB_DATA_ENTRY]
+			= (ev->data.control.value >> 7) & 0x7f;
+		chan->control[MIDI_CTL_LSB_DATA_ENTRY]
+			= ev->data.control.value & 0x7f;
+		chan->control[MIDI_CTL_NONREG_PARM_NUM_MSB]
+			= (ev->data.control.param >> 7) & 0x7f;
+		chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB]
+			= ev->data.control.param & 0x7f;
+		nrpn(ops, drv, chan, chanset);
+		break;
+	case SNDRV_SEQ_EVENT_REGPARAM:
+		/* Break it back into its controller values */
+		chan->param_type = SNDRV_MIDI_PARAM_TYPE_REGISTERED;
+		chan->control[MIDI_CTL_MSB_DATA_ENTRY]
+			= (ev->data.control.value >> 7) & 0x7f;
+		chan->control[MIDI_CTL_LSB_DATA_ENTRY]
+			= ev->data.control.value & 0x7f;
+		chan->control[MIDI_CTL_REGIST_PARM_NUM_MSB]
+			= (ev->data.control.param >> 7) & 0x7f;
+		chan->control[MIDI_CTL_REGIST_PARM_NUM_LSB]
+			= ev->data.control.param & 0x7f;
+		rpn(ops, drv, chan, chanset);
+		break;
+	case SNDRV_SEQ_EVENT_SYSEX:
+		if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE) {
+			unsigned char sysexbuf[64];
+			int len;
+			len = snd_seq_expand_var_event(ev, sizeof(sysexbuf), sysexbuf, 1, 0);
+			if (len > 0)
+				sysex(ops, drv, sysexbuf, len, chanset);
+		}
+		break;
+	case SNDRV_SEQ_EVENT_SONGPOS:
+	case SNDRV_SEQ_EVENT_SONGSEL:
+	case SNDRV_SEQ_EVENT_CLOCK:
+	case SNDRV_SEQ_EVENT_START:
+	case SNDRV_SEQ_EVENT_CONTINUE:
+	case SNDRV_SEQ_EVENT_STOP:
+	case SNDRV_SEQ_EVENT_QFRAME:
+	case SNDRV_SEQ_EVENT_TEMPO:
+	case SNDRV_SEQ_EVENT_TIMESIGN:
+	case SNDRV_SEQ_EVENT_KEYSIGN:
+		goto not_yet;
+	case SNDRV_SEQ_EVENT_SENSING:
+		break;
+	case SNDRV_SEQ_EVENT_CLIENT_START:
+	case SNDRV_SEQ_EVENT_CLIENT_EXIT:
+	case SNDRV_SEQ_EVENT_CLIENT_CHANGE:
+	case SNDRV_SEQ_EVENT_PORT_START:
+	case SNDRV_SEQ_EVENT_PORT_EXIT:
+	case SNDRV_SEQ_EVENT_PORT_CHANGE:
+	case SNDRV_SEQ_EVENT_ECHO:
+	not_yet:
+	default:
+		/*pr_debug("ALSA: seq_midi_emul: Unimplemented event %d\n", ev->type);*/
+		break;
+	}
+}
+EXPORT_SYMBOL(snd_midi_process_event);
+
+
+/*
+ * release note
+ */
+static void
+note_off(const struct snd_midi_op *ops, void *drv,
+	 struct snd_midi_channel *chan,
+	 int note, int vel)
+{
+	if (chan->gm_hold) {
+		/* Hold this note until pedal is turned off */
+		chan->note[note] |= SNDRV_MIDI_NOTE_RELEASED;
+	} else if (chan->note[note] & SNDRV_MIDI_NOTE_SOSTENUTO) {
+		/* Mark this note as release; it will be turned off when sostenuto
+		 * is turned off */
+		chan->note[note] |= SNDRV_MIDI_NOTE_RELEASED;
+	} else {
+		chan->note[note] = 0;
+		if (ops->note_off)
+			ops->note_off(drv, note, vel, chan);
+	}
+}
+
+/*
+ * Do all driver independent operations for this controller and pass
+ * events that need to take place immediately to the driver.
+ */
+static void
+do_control(const struct snd_midi_op *ops, void *drv,
+	   struct snd_midi_channel_set *chset,
+	   struct snd_midi_channel *chan, int control, int value)
+{
+	int  i;
+
+	if (control >= ARRAY_SIZE(chan->control))
+		return;
+
+	/* Switches */
+	if ((control >=64 && control <=69) || (control >= 80 && control <= 83)) {
+		/* These are all switches; either off or on so set to 0 or 127 */
+		value = (value >= 64)? 127: 0;
+	}
+	chan->control[control] = value;
+
+	switch (control) {
+	case MIDI_CTL_SUSTAIN:
+		if (value == 0) {
+			/* Sustain has been released, turn off held notes */
+			for (i = 0; i < 128; i++) {
+				if (chan->note[i] & SNDRV_MIDI_NOTE_RELEASED) {
+					chan->note[i] = SNDRV_MIDI_NOTE_OFF;
+					if (ops->note_off)
+						ops->note_off(drv, i, 0, chan);
+				}
+			}
+		}
+		break;
+	case MIDI_CTL_PORTAMENTO:
+		break;
+	case MIDI_CTL_SOSTENUTO:
+		if (value) {
+			/* Mark each note that is currently held down */
+			for (i = 0; i < 128; i++) {
+				if (chan->note[i] & SNDRV_MIDI_NOTE_ON)
+					chan->note[i] |= SNDRV_MIDI_NOTE_SOSTENUTO;
+			}
+		} else {
+			/* release all notes that were held */
+			for (i = 0; i < 128; i++) {
+				if (chan->note[i] & SNDRV_MIDI_NOTE_SOSTENUTO) {
+					chan->note[i] &= ~SNDRV_MIDI_NOTE_SOSTENUTO;
+					if (chan->note[i] & SNDRV_MIDI_NOTE_RELEASED) {
+						chan->note[i] = SNDRV_MIDI_NOTE_OFF;
+						if (ops->note_off)
+							ops->note_off(drv, i, 0, chan);
+					}
+				}
+			}
+		}
+		break;
+	case MIDI_CTL_MSB_DATA_ENTRY:
+		chan->control[MIDI_CTL_LSB_DATA_ENTRY] = 0;
+		fallthrough;
+	case MIDI_CTL_LSB_DATA_ENTRY:
+		if (chan->param_type == SNDRV_MIDI_PARAM_TYPE_REGISTERED)
+			rpn(ops, drv, chan, chset);
+		else
+			nrpn(ops, drv, chan, chset);
+		break;
+	case MIDI_CTL_REGIST_PARM_NUM_LSB:
+	case MIDI_CTL_REGIST_PARM_NUM_MSB:
+		chan->param_type = SNDRV_MIDI_PARAM_TYPE_REGISTERED;
+		break;
+	case MIDI_CTL_NONREG_PARM_NUM_LSB:
+	case MIDI_CTL_NONREG_PARM_NUM_MSB:
+		chan->param_type = SNDRV_MIDI_PARAM_TYPE_NONREGISTERED;
+		break;
+
+	case MIDI_CTL_ALL_SOUNDS_OFF:
+		all_sounds_off(ops, drv, chan);
+		break;
+
+	case MIDI_CTL_ALL_NOTES_OFF:
+		all_notes_off(ops, drv, chan);
+		break;
+
+	case MIDI_CTL_MSB_BANK:
+		if (chset->midi_mode == SNDRV_MIDI_MODE_XG) {
+			if (value == 127)
+				chan->drum_channel = 1;
+			else
+				chan->drum_channel = 0;
+		}
+		break;
+	case MIDI_CTL_LSB_BANK:
+		break;
+
+	case MIDI_CTL_RESET_CONTROLLERS:
+		snd_midi_reset_controllers(chan);
+		break;
+
+	case MIDI_CTL_SOFT_PEDAL:
+	case MIDI_CTL_LEGATO_FOOTSWITCH:
+	case MIDI_CTL_HOLD2:
+	case MIDI_CTL_SC1_SOUND_VARIATION:
+	case MIDI_CTL_SC2_TIMBRE:
+	case MIDI_CTL_SC3_RELEASE_TIME:
+	case MIDI_CTL_SC4_ATTACK_TIME:
+	case MIDI_CTL_SC5_BRIGHTNESS:
+	case MIDI_CTL_E1_REVERB_DEPTH:
+	case MIDI_CTL_E2_TREMOLO_DEPTH:
+	case MIDI_CTL_E3_CHORUS_DEPTH:
+	case MIDI_CTL_E4_DETUNE_DEPTH:
+	case MIDI_CTL_E5_PHASER_DEPTH:
+		goto notyet;
+	notyet:
+	default:
+		if (ops->control)
+			ops->control(drv, control, chan);
+		break;
+	}
+}
+
+
+/*
+ * initialize the MIDI status
+ */
+void
+snd_midi_channel_set_clear(struct snd_midi_channel_set *chset)
+{
+	int i;
+
+	chset->midi_mode = SNDRV_MIDI_MODE_GM;
+	chset->gs_master_volume = 127;
+
+	for (i = 0; i < chset->max_channels; i++) {
+		struct snd_midi_channel *chan = chset->channels + i;
+		memset(chan->note, 0, sizeof(chan->note));
+
+		chan->midi_aftertouch = 0;
+		chan->midi_pressure = 0;
+		chan->midi_program = 0;
+		chan->midi_pitchbend = 0;
+		snd_midi_reset_controllers(chan);
+		chan->gm_rpn_pitch_bend_range = 256; /* 2 semitones */
+		chan->gm_rpn_fine_tuning = 0;
+		chan->gm_rpn_coarse_tuning = 0;
+
+		if (i == 9)
+			chan->drum_channel = 1;
+		else
+			chan->drum_channel = 0;
+	}
+}
+EXPORT_SYMBOL(snd_midi_channel_set_clear);
+
+/*
+ * Process a rpn message.
+ */
+static void
+rpn(const struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
+    struct snd_midi_channel_set *chset)
+{
+	int type;
+	int val;
+
+	if (chset->midi_mode != SNDRV_MIDI_MODE_NONE) {
+		type = (chan->control[MIDI_CTL_REGIST_PARM_NUM_MSB] << 8) |
+			chan->control[MIDI_CTL_REGIST_PARM_NUM_LSB];
+		val = (chan->control[MIDI_CTL_MSB_DATA_ENTRY] << 7) |
+			chan->control[MIDI_CTL_LSB_DATA_ENTRY];
+
+		switch (type) {
+		case 0x0000: /* Pitch bend sensitivity */
+			/* MSB only / 1 semitone per 128 */
+			chan->gm_rpn_pitch_bend_range = val;
+			break;
+					
+		case 0x0001: /* fine tuning: */
+			/* MSB/LSB, 8192=center, 100/8192 cent step */
+			chan->gm_rpn_fine_tuning = val - 8192;
+			break;
+
+		case 0x0002: /* coarse tuning */
+			/* MSB only / 8192=center, 1 semitone per 128 */
+			chan->gm_rpn_coarse_tuning = val - 8192;
+			break;
+
+		case 0x7F7F: /* "lock-in" RPN */
+			/* ignored */
+			break;
+		}
+	}
+	/* should call nrpn or rpn callback here.. */
+}
+
+/*
+ * Process an nrpn message.
+ */
+static void
+nrpn(const struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
+     struct snd_midi_channel_set *chset)
+{
+	/* parse XG NRPNs here if possible */
+	if (ops->nrpn)
+		ops->nrpn(drv, chan, chset);
+}
+
+
+/*
+ * convert channel parameter in GS sysex
+ */
+static int
+get_channel(unsigned char cmd)
+{
+	int p = cmd & 0x0f;
+	if (p == 0)
+		p = 9;
+	else if (p < 10)
+		p--;
+	return p;
+}
+
+
+/*
+ * Process a sysex message.
+ */
+static void
+sysex(const struct snd_midi_op *ops, void *private, unsigned char *buf, int len,
+      struct snd_midi_channel_set *chset)
+{
+	/* GM on */
+	static const unsigned char gm_on_macro[] = {
+		0x7e,0x7f,0x09,0x01,
+	};
+	/* XG on */
+	static const unsigned char xg_on_macro[] = {
+		0x43,0x10,0x4c,0x00,0x00,0x7e,0x00,
+	};
+	/* GS prefix
+	 * drum channel: XX=0x1?(channel), YY=0x15, ZZ=on/off
+	 * reverb mode: XX=0x01, YY=0x30, ZZ=0-7
+	 * chorus mode: XX=0x01, YY=0x38, ZZ=0-7
+	 * master vol:  XX=0x00, YY=0x04, ZZ=0-127
+	 */
+	static const unsigned char gs_pfx_macro[] = {
+		0x41,0x10,0x42,0x12,0x40,/*XX,YY,ZZ*/
+	};
+
+	int parsed = SNDRV_MIDI_SYSEX_NOT_PARSED;
+
+	if (len <= 0 || buf[0] != 0xf0)
+		return;
+	/* skip first byte */
+	buf++;
+	len--;
+
+	/* GM on */
+	if (len >= (int)sizeof(gm_on_macro) &&
+	    memcmp(buf, gm_on_macro, sizeof(gm_on_macro)) == 0) {
+		if (chset->midi_mode != SNDRV_MIDI_MODE_GS &&
+		    chset->midi_mode != SNDRV_MIDI_MODE_XG) {
+			chset->midi_mode = SNDRV_MIDI_MODE_GM;
+			reset_all_channels(chset);
+			parsed = SNDRV_MIDI_SYSEX_GM_ON;
+		}
+	}
+
+	/* GS macros */
+	else if (len >= 8 &&
+		 memcmp(buf, gs_pfx_macro, sizeof(gs_pfx_macro)) == 0) {
+		if (chset->midi_mode != SNDRV_MIDI_MODE_GS &&
+		    chset->midi_mode != SNDRV_MIDI_MODE_XG)
+			chset->midi_mode = SNDRV_MIDI_MODE_GS;
+
+		if (buf[5] == 0x00 && buf[6] == 0x7f && buf[7] == 0x00) {
+			/* GS reset */
+			parsed = SNDRV_MIDI_SYSEX_GS_RESET;
+			reset_all_channels(chset);
+		}
+
+		else if ((buf[5] & 0xf0) == 0x10 && buf[6] == 0x15) {
+			/* drum pattern */
+			int p = get_channel(buf[5]);
+			if (p < chset->max_channels) {
+				parsed = SNDRV_MIDI_SYSEX_GS_DRUM_CHANNEL;
+				if (buf[7])
+					chset->channels[p].drum_channel = 1;
+				else
+					chset->channels[p].drum_channel = 0;
+			}
+
+		} else if ((buf[5] & 0xf0) == 0x10 && buf[6] == 0x21) {
+			/* program */
+			int p = get_channel(buf[5]);
+			if (p < chset->max_channels &&
+			    ! chset->channels[p].drum_channel) {
+				parsed = SNDRV_MIDI_SYSEX_GS_DRUM_CHANNEL;
+				chset->channels[p].midi_program = buf[7];
+			}
+
+		} else if (buf[5] == 0x01 && buf[6] == 0x30) {
+			/* reverb mode */
+			parsed = SNDRV_MIDI_SYSEX_GS_REVERB_MODE;
+			chset->gs_reverb_mode = buf[7];
+
+		} else if (buf[5] == 0x01 && buf[6] == 0x38) {
+			/* chorus mode */
+			parsed = SNDRV_MIDI_SYSEX_GS_CHORUS_MODE;
+			chset->gs_chorus_mode = buf[7];
+
+		} else if (buf[5] == 0x00 && buf[6] == 0x04) {
+			/* master volume */
+			parsed = SNDRV_MIDI_SYSEX_GS_MASTER_VOLUME;
+			chset->gs_master_volume = buf[7];
+
+		}
+	}
+
+	/* XG on */
+	else if (len >= (int)sizeof(xg_on_macro) &&
+		 memcmp(buf, xg_on_macro, sizeof(xg_on_macro)) == 0) {
+		int i;
+		chset->midi_mode = SNDRV_MIDI_MODE_XG;
+		parsed = SNDRV_MIDI_SYSEX_XG_ON;
+		/* reset CC#0 for drums */
+		for (i = 0; i < chset->max_channels; i++) {
+			if (chset->channels[i].drum_channel)
+				chset->channels[i].control[MIDI_CTL_MSB_BANK] = 127;
+			else
+				chset->channels[i].control[MIDI_CTL_MSB_BANK] = 0;
+		}
+	}
+
+	if (ops->sysex)
+		ops->sysex(private, buf - 1, len + 1, parsed, chset);
+}
+
+/*
+ * all sound off
+ */
+static void
+all_sounds_off(const struct snd_midi_op *ops, void *drv,
+	       struct snd_midi_channel *chan)
+{
+	int n;
+
+	if (! ops->note_terminate)
+		return;
+	for (n = 0; n < 128; n++) {
+		if (chan->note[n]) {
+			ops->note_terminate(drv, n, chan);
+			chan->note[n] = 0;
+		}
+	}
+}
+
+/*
+ * all notes off
+ */
+static void
+all_notes_off(const struct snd_midi_op *ops, void *drv,
+	      struct snd_midi_channel *chan)
+{
+	int n;
+
+	if (! ops->note_off)
+		return;
+	for (n = 0; n < 128; n++) {
+		if (chan->note[n] == SNDRV_MIDI_NOTE_ON)
+			note_off(ops, drv, chan, n, 0);
+	}
+}
+
+/*
+ * Initialise a single midi channel control block.
+ */
+static void snd_midi_channel_init(struct snd_midi_channel *p, int n)
+{
+	if (p == NULL)
+		return;
+
+	memset(p, 0, sizeof(struct snd_midi_channel));
+	p->private = NULL;
+	p->number = n;
+
+	snd_midi_reset_controllers(p);
+	p->gm_rpn_pitch_bend_range = 256; /* 2 semitones */
+	p->gm_rpn_fine_tuning = 0;
+	p->gm_rpn_coarse_tuning = 0;
+
+	if (n == 9)
+		p->drum_channel = 1;	/* Default ch 10 as drums */
+}
+
+/*
+ * Allocate and initialise a set of midi channel control blocks.
+ */
+static struct snd_midi_channel *snd_midi_channel_init_set(int n)
+{
+	struct snd_midi_channel *chan;
+	int  i;
+
+	chan = kmalloc_array(n, sizeof(struct snd_midi_channel), GFP_KERNEL);
+	if (chan) {
+		for (i = 0; i < n; i++)
+			snd_midi_channel_init(chan+i, i);
+	}
+
+	return chan;
+}
+
+/*
+ * reset all midi channels
+ */
+static void
+reset_all_channels(struct snd_midi_channel_set *chset)
+{
+	int ch;
+	for (ch = 0; ch < chset->max_channels; ch++) {
+		struct snd_midi_channel *chan = chset->channels + ch;
+		snd_midi_reset_controllers(chan);
+		chan->gm_rpn_pitch_bend_range = 256; /* 2 semitones */
+		chan->gm_rpn_fine_tuning = 0;
+		chan->gm_rpn_coarse_tuning = 0;
+
+		if (ch == 9)
+			chan->drum_channel = 1;
+		else
+			chan->drum_channel = 0;
+	}
+}
+
+
+/*
+ * Allocate and initialise a midi channel set.
+ */
+struct snd_midi_channel_set *snd_midi_channel_alloc_set(int n)
+{
+	struct snd_midi_channel_set *chset;
+
+	chset = kmalloc(sizeof(*chset), GFP_KERNEL);
+	if (chset) {
+		chset->channels = snd_midi_channel_init_set(n);
+		chset->private_data = NULL;
+		chset->max_channels = n;
+	}
+	return chset;
+}
+EXPORT_SYMBOL(snd_midi_channel_alloc_set);
+
+/*
+ * Reset the midi controllers on a particular channel to default values.
+ */
+static void snd_midi_reset_controllers(struct snd_midi_channel *chan)
+{
+	memset(chan->control, 0, sizeof(chan->control));
+	chan->gm_volume = 127;
+	chan->gm_expression = 127;
+	chan->gm_pan = 64;
+}
+
+
+/*
+ * Free a midi channel set.
+ */
+void snd_midi_channel_free_set(struct snd_midi_channel_set *chset)
+{
+	if (chset == NULL)
+		return;
+	kfree(chset->channels);
+	kfree(chset);
+}
+EXPORT_SYMBOL(snd_midi_channel_free_set);