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, 987 insertions, 0 deletions

diff --git a/sound/parisc/harmony.c b/sound/parisc/harmony.c
new file mode 100644
index 000000000..db9c296dd
--- /dev/null
+++ b/sound/parisc/harmony.c
@@ -0,0 +1,987 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Hewlett-Packard Harmony audio driver
+ *
+ *   This is a driver for the Harmony audio chipset found
+ *   on the LASI ASIC of various early HP PA-RISC workstations.
+ *
+ *   Copyright (C) 2004, Kyle McMartin <kyle@{debian.org,parisc-linux.org}>
+ *
+ *     Based on the previous Harmony incarnations by,
+ *       Copyright 2000 (c) Linuxcare Canada, Alex deVries
+ *       Copyright 2000-2003 (c) Helge Deller
+ *       Copyright 2001 (c) Matthieu Delahaye
+ *       Copyright 2001 (c) Jean-Christophe Vaugeois
+ *       Copyright 2003 (c) Laurent Canet
+ *       Copyright 2004 (c) Stuart Brady
+ *
+ * Notes:
+ *   - graveyard and silence buffers last for lifetime of
+ *     the driver. playback and capture buffers are allocated
+ *     per _open()/_close().
+ * 
+ * TODO:
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/control.h>
+#include <sound/rawmidi.h>
+#include <sound/initval.h>
+#include <sound/info.h>
+
+#include <asm/hardware.h>
+#include <asm/parisc-device.h>
+
+#include "harmony.h"
+
+static int index = SNDRV_DEFAULT_IDX1;	/* Index 0-MAX */
+static char *id = SNDRV_DEFAULT_STR1;	/* ID for this card */
+module_param(index, int, 0444);
+MODULE_PARM_DESC(index, "Index value for Harmony driver.");
+module_param(id, charp, 0444);
+MODULE_PARM_DESC(id, "ID string for Harmony driver.");
+
+
+static const struct parisc_device_id snd_harmony_devtable[] __initconst = {
+	/* bushmaster / flounder */
+	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007A }, 
+	/* 712 / 715 */
+	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007B }, 
+	/* pace */
+	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007E }, 
+	/* outfield / coral II */
+	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007F },
+	{ 0, }
+};
+
+MODULE_DEVICE_TABLE(parisc, snd_harmony_devtable);
+
+#define NAME "harmony"
+#define PFX  NAME ": "
+
+static const unsigned int snd_harmony_rates[] = {
+	5512, 6615, 8000, 9600,
+	11025, 16000, 18900, 22050,
+	27428, 32000, 33075, 37800,
+	44100, 48000
+};
+
+static const unsigned int rate_bits[14] = {
+	HARMONY_SR_5KHZ, HARMONY_SR_6KHZ, HARMONY_SR_8KHZ,
+	HARMONY_SR_9KHZ, HARMONY_SR_11KHZ, HARMONY_SR_16KHZ,
+	HARMONY_SR_18KHZ, HARMONY_SR_22KHZ, HARMONY_SR_27KHZ,
+	HARMONY_SR_32KHZ, HARMONY_SR_33KHZ, HARMONY_SR_37KHZ,
+	HARMONY_SR_44KHZ, HARMONY_SR_48KHZ
+};
+
+static const struct snd_pcm_hw_constraint_list hw_constraint_rates = {
+	.count = ARRAY_SIZE(snd_harmony_rates),
+	.list = snd_harmony_rates,
+	.mask = 0,
+};
+
+static inline unsigned long
+harmony_read(struct snd_harmony *h, unsigned r)
+{
+	return __raw_readl(h->iobase + r);
+}
+
+static inline void
+harmony_write(struct snd_harmony *h, unsigned r, unsigned long v)
+{
+	__raw_writel(v, h->iobase + r);
+}
+
+static inline void
+harmony_wait_for_control(struct snd_harmony *h)
+{
+	while (harmony_read(h, HARMONY_CNTL) & HARMONY_CNTL_C) ;
+}
+
+static inline void
+harmony_reset(struct snd_harmony *h)
+{
+	harmony_write(h, HARMONY_RESET, 1);
+	mdelay(50);
+	harmony_write(h, HARMONY_RESET, 0);
+}
+
+static void
+harmony_disable_interrupts(struct snd_harmony *h)
+{
+	u32 dstatus;
+	harmony_wait_for_control(h);
+	dstatus = harmony_read(h, HARMONY_DSTATUS);
+	dstatus &= ~HARMONY_DSTATUS_IE;
+	harmony_write(h, HARMONY_DSTATUS, dstatus);
+}
+
+static void
+harmony_enable_interrupts(struct snd_harmony *h)
+{
+	u32 dstatus;
+	harmony_wait_for_control(h);
+	dstatus = harmony_read(h, HARMONY_DSTATUS);
+	dstatus |= HARMONY_DSTATUS_IE;
+	harmony_write(h, HARMONY_DSTATUS, dstatus);
+}
+
+static void
+harmony_mute(struct snd_harmony *h)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&h->mixer_lock, flags);
+	harmony_wait_for_control(h);
+	harmony_write(h, HARMONY_GAINCTL, HARMONY_GAIN_SILENCE);
+	spin_unlock_irqrestore(&h->mixer_lock, flags);
+}
+
+static void
+harmony_unmute(struct snd_harmony *h)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&h->mixer_lock, flags);
+	harmony_wait_for_control(h);
+	harmony_write(h, HARMONY_GAINCTL, h->st.gain);
+	spin_unlock_irqrestore(&h->mixer_lock, flags);
+}
+
+static void
+harmony_set_control(struct snd_harmony *h)
+{
+	u32 ctrl;
+	unsigned long flags;
+
+	spin_lock_irqsave(&h->lock, flags);
+
+	ctrl = (HARMONY_CNTL_C      |
+		(h->st.format << 6) |
+		(h->st.stereo << 5) |
+		(h->st.rate));
+
+	harmony_wait_for_control(h);
+	harmony_write(h, HARMONY_CNTL, ctrl);
+
+	spin_unlock_irqrestore(&h->lock, flags);
+}
+
+static irqreturn_t
+snd_harmony_interrupt(int irq, void *dev)
+{
+	u32 dstatus;
+	struct snd_harmony *h = dev;
+
+	spin_lock(&h->lock);
+	harmony_disable_interrupts(h);
+	harmony_wait_for_control(h);
+	dstatus = harmony_read(h, HARMONY_DSTATUS);
+	spin_unlock(&h->lock);
+
+	if (dstatus & HARMONY_DSTATUS_PN) {
+		if (h->psubs && h->st.playing) {
+			spin_lock(&h->lock);
+			h->pbuf.buf += h->pbuf.count; /* PAGE_SIZE */
+			h->pbuf.buf %= h->pbuf.size; /* MAX_BUFS*PAGE_SIZE */
+
+			harmony_write(h, HARMONY_PNXTADD, 
+				      h->pbuf.addr + h->pbuf.buf);
+			h->stats.play_intr++;
+			spin_unlock(&h->lock);
+                        snd_pcm_period_elapsed(h->psubs);
+		} else {
+			spin_lock(&h->lock);
+			harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
+			h->stats.silence_intr++;
+			spin_unlock(&h->lock);
+		}
+	}
+
+	if (dstatus & HARMONY_DSTATUS_RN) {
+		if (h->csubs && h->st.capturing) {
+			spin_lock(&h->lock);
+			h->cbuf.buf += h->cbuf.count;
+			h->cbuf.buf %= h->cbuf.size;
+
+			harmony_write(h, HARMONY_RNXTADD,
+				      h->cbuf.addr + h->cbuf.buf);
+			h->stats.rec_intr++;
+			spin_unlock(&h->lock);
+                        snd_pcm_period_elapsed(h->csubs);
+		} else {
+			spin_lock(&h->lock);
+			harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
+			h->stats.graveyard_intr++;
+			spin_unlock(&h->lock);
+		}
+	}
+
+	spin_lock(&h->lock);
+	harmony_enable_interrupts(h);
+	spin_unlock(&h->lock);
+
+	return IRQ_HANDLED;
+}
+
+static unsigned int 
+snd_harmony_rate_bits(int rate)
+{
+	unsigned int i;
+	
+	for (i = 0; i < ARRAY_SIZE(snd_harmony_rates); i++)
+		if (snd_harmony_rates[i] == rate)
+			return rate_bits[i];
+
+	return HARMONY_SR_44KHZ;
+}
+
+static const struct snd_pcm_hardware snd_harmony_playback =
+{
+	.info =	(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 
+		 SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID |
+		 SNDRV_PCM_INFO_BLOCK_TRANSFER),
+	.formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW |
+		    SNDRV_PCM_FMTBIT_A_LAW),
+	.rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 |
+		  SNDRV_PCM_RATE_KNOT),
+	.rate_min = 5512,
+	.rate_max = 48000,
+	.channels_min =	1,
+	.channels_max =	2,
+	.buffer_bytes_max = MAX_BUF_SIZE,
+	.period_bytes_min = BUF_SIZE,
+	.period_bytes_max = BUF_SIZE,
+	.periods_min = 1,
+	.periods_max = MAX_BUFS,
+	.fifo_size = 0,
+};
+
+static const struct snd_pcm_hardware snd_harmony_capture =
+{
+        .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+                 SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID |
+                 SNDRV_PCM_INFO_BLOCK_TRANSFER),
+        .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW |
+                    SNDRV_PCM_FMTBIT_A_LAW),
+        .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 |
+		  SNDRV_PCM_RATE_KNOT),
+        .rate_min = 5512,
+        .rate_max = 48000,
+        .channels_min = 1,
+        .channels_max = 2,
+        .buffer_bytes_max = MAX_BUF_SIZE,
+        .period_bytes_min = BUF_SIZE,
+        .period_bytes_max = BUF_SIZE,
+        .periods_min = 1,
+        .periods_max = MAX_BUFS,
+        .fifo_size = 0,
+};
+
+static int
+snd_harmony_playback_trigger(struct snd_pcm_substream *ss, int cmd)
+{
+	struct snd_harmony *h = snd_pcm_substream_chip(ss);
+
+	if (h->st.capturing)
+		return -EBUSY;
+
+	spin_lock(&h->lock);
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		h->st.playing = 1;
+		harmony_write(h, HARMONY_PNXTADD, h->pbuf.addr);
+		harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
+		harmony_unmute(h);
+		harmony_enable_interrupts(h);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+		h->st.playing = 0;
+		harmony_mute(h);
+		harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
+		harmony_disable_interrupts(h);
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	default:
+		spin_unlock(&h->lock);
+		snd_BUG();
+		return -EINVAL;
+	}
+	spin_unlock(&h->lock);
+	
+	return 0;
+}
+
+static int
+snd_harmony_capture_trigger(struct snd_pcm_substream *ss, int cmd)
+{
+        struct snd_harmony *h = snd_pcm_substream_chip(ss);
+
+	if (h->st.playing)
+		return -EBUSY;
+
+	spin_lock(&h->lock);
+        switch (cmd) {
+        case SNDRV_PCM_TRIGGER_START:
+		h->st.capturing = 1;
+                harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
+                harmony_write(h, HARMONY_RNXTADD, h->cbuf.addr);
+		harmony_unmute(h);
+                harmony_enable_interrupts(h);
+		break;
+        case SNDRV_PCM_TRIGGER_STOP:
+		h->st.capturing = 0;
+		harmony_mute(h);
+		harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
+		harmony_disable_interrupts(h);
+		break;
+        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+        case SNDRV_PCM_TRIGGER_SUSPEND:
+	default:
+		spin_unlock(&h->lock);
+		snd_BUG();
+                return -EINVAL;
+        }
+	spin_unlock(&h->lock);
+		
+        return 0;
+}
+
+static int
+snd_harmony_set_data_format(struct snd_harmony *h, int fmt, int force)
+{
+	int o = h->st.format;
+	int n;
+
+	switch(fmt) {
+	case SNDRV_PCM_FORMAT_S16_BE:
+		n = HARMONY_DF_16BIT_LINEAR;
+		break;
+	case SNDRV_PCM_FORMAT_A_LAW:
+		n = HARMONY_DF_8BIT_ALAW;
+		break;
+	case SNDRV_PCM_FORMAT_MU_LAW:
+		n = HARMONY_DF_8BIT_ULAW;
+		break;
+	default:
+		n = HARMONY_DF_16BIT_LINEAR;
+		break;
+	}
+
+	if (force || o != n) {
+		snd_pcm_format_set_silence(fmt, h->sdma.area, SILENCE_BUFSZ / 
+					   (snd_pcm_format_physical_width(fmt)
+					    / 8));
+	}
+
+	return n;
+}
+
+static int
+snd_harmony_playback_prepare(struct snd_pcm_substream *ss)
+{
+	struct snd_harmony *h = snd_pcm_substream_chip(ss);
+	struct snd_pcm_runtime *rt = ss->runtime;
+	
+	if (h->st.capturing)
+		return -EBUSY;
+	
+	h->pbuf.size = snd_pcm_lib_buffer_bytes(ss);
+	h->pbuf.count = snd_pcm_lib_period_bytes(ss);
+	if (h->pbuf.buf >= h->pbuf.size)
+		h->pbuf.buf = 0;
+	h->st.playing = 0;
+
+	h->st.rate = snd_harmony_rate_bits(rt->rate);
+	h->st.format = snd_harmony_set_data_format(h, rt->format, 0);
+	
+	if (rt->channels == 2)
+		h->st.stereo = HARMONY_SS_STEREO;
+	else
+		h->st.stereo = HARMONY_SS_MONO;
+
+	harmony_set_control(h);
+
+	h->pbuf.addr = rt->dma_addr;
+
+	return 0;
+}
+
+static int
+snd_harmony_capture_prepare(struct snd_pcm_substream *ss)
+{
+        struct snd_harmony *h = snd_pcm_substream_chip(ss);
+        struct snd_pcm_runtime *rt = ss->runtime;
+
+	if (h->st.playing)
+		return -EBUSY;
+
+        h->cbuf.size = snd_pcm_lib_buffer_bytes(ss);
+        h->cbuf.count = snd_pcm_lib_period_bytes(ss);
+	if (h->cbuf.buf >= h->cbuf.size)
+	        h->cbuf.buf = 0;
+	h->st.capturing = 0;
+
+        h->st.rate = snd_harmony_rate_bits(rt->rate);
+        h->st.format = snd_harmony_set_data_format(h, rt->format, 0);
+
+        if (rt->channels == 2)
+                h->st.stereo = HARMONY_SS_STEREO;
+        else
+                h->st.stereo = HARMONY_SS_MONO;
+
+        harmony_set_control(h);
+
+        h->cbuf.addr = rt->dma_addr;
+
+        return 0;
+}
+
+static snd_pcm_uframes_t 
+snd_harmony_playback_pointer(struct snd_pcm_substream *ss)
+{
+	struct snd_pcm_runtime *rt = ss->runtime;
+	struct snd_harmony *h = snd_pcm_substream_chip(ss);
+	unsigned long pcuradd;
+	unsigned long played;
+
+	if (!(h->st.playing) || (h->psubs == NULL)) 
+		return 0;
+
+	if ((h->pbuf.addr == 0) || (h->pbuf.size == 0))
+		return 0;
+	
+	pcuradd = harmony_read(h, HARMONY_PCURADD);
+	played = pcuradd - h->pbuf.addr;
+
+#ifdef HARMONY_DEBUG
+	printk(KERN_DEBUG PFX "playback_pointer is 0x%lx-0x%lx = %d bytes\n", 
+	       pcuradd, h->pbuf.addr, played);	
+#endif
+
+	if (pcuradd > h->pbuf.addr + h->pbuf.size) {
+		return 0;
+	}
+
+	return bytes_to_frames(rt, played);
+}
+
+static snd_pcm_uframes_t
+snd_harmony_capture_pointer(struct snd_pcm_substream *ss)
+{
+        struct snd_pcm_runtime *rt = ss->runtime;
+        struct snd_harmony *h = snd_pcm_substream_chip(ss);
+        unsigned long rcuradd;
+        unsigned long caught;
+
+        if (!(h->st.capturing) || (h->csubs == NULL))
+                return 0;
+
+        if ((h->cbuf.addr == 0) || (h->cbuf.size == 0))
+                return 0;
+
+        rcuradd = harmony_read(h, HARMONY_RCURADD);
+        caught = rcuradd - h->cbuf.addr;
+
+#ifdef HARMONY_DEBUG
+        printk(KERN_DEBUG PFX "capture_pointer is 0x%lx-0x%lx = %d bytes\n",
+               rcuradd, h->cbuf.addr, caught);
+#endif
+
+        if (rcuradd > h->cbuf.addr + h->cbuf.size) {
+		return 0;
+	}
+
+        return bytes_to_frames(rt, caught);
+}
+
+static int 
+snd_harmony_playback_open(struct snd_pcm_substream *ss)
+{
+	struct snd_harmony *h = snd_pcm_substream_chip(ss);
+	struct snd_pcm_runtime *rt = ss->runtime;
+	int err;
+	
+	h->psubs = ss;
+	rt->hw = snd_harmony_playback;
+	snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE, 
+				   &hw_constraint_rates);
+	
+	err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
+	if (err < 0)
+		return err;
+	
+	return 0;
+}
+
+static int
+snd_harmony_capture_open(struct snd_pcm_substream *ss)
+{
+        struct snd_harmony *h = snd_pcm_substream_chip(ss);
+        struct snd_pcm_runtime *rt = ss->runtime;
+        int err;
+
+        h->csubs = ss;
+        rt->hw = snd_harmony_capture;
+        snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE,
+                                   &hw_constraint_rates);
+
+        err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
+        if (err < 0)
+                return err;
+
+        return 0;
+}
+
+static int 
+snd_harmony_playback_close(struct snd_pcm_substream *ss)
+{
+	struct snd_harmony *h = snd_pcm_substream_chip(ss);
+	h->psubs = NULL;
+	return 0;
+}
+
+static int
+snd_harmony_capture_close(struct snd_pcm_substream *ss)
+{
+        struct snd_harmony *h = snd_pcm_substream_chip(ss);
+        h->csubs = NULL;
+        return 0;
+}
+
+static const struct snd_pcm_ops snd_harmony_playback_ops = {
+	.open =	snd_harmony_playback_open,
+	.close = snd_harmony_playback_close,
+	.prepare = snd_harmony_playback_prepare,
+	.trigger = snd_harmony_playback_trigger,
+ 	.pointer = snd_harmony_playback_pointer,
+};
+
+static const struct snd_pcm_ops snd_harmony_capture_ops = {
+        .open = snd_harmony_capture_open,
+        .close = snd_harmony_capture_close,
+        .prepare = snd_harmony_capture_prepare,
+        .trigger = snd_harmony_capture_trigger,
+        .pointer = snd_harmony_capture_pointer,
+};
+
+static int 
+snd_harmony_pcm_init(struct snd_harmony *h)
+{
+	struct snd_pcm *pcm;
+	int err;
+
+	if (snd_BUG_ON(!h))
+		return -EINVAL;
+
+	harmony_disable_interrupts(h);
+	
+   	err = snd_pcm_new(h->card, "harmony", 0, 1, 1, &pcm);
+	if (err < 0)
+		return err;
+	
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, 
+			&snd_harmony_playback_ops);
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+			&snd_harmony_capture_ops);
+
+	pcm->private_data = h;
+	pcm->info_flags = 0;
+	strcpy(pcm->name, "harmony");
+	h->pcm = pcm;
+
+	h->psubs = NULL;
+	h->csubs = NULL;
+	
+	/* initialize graveyard buffer */
+	h->dma.type = SNDRV_DMA_TYPE_DEV;
+	h->dma.dev = &h->dev->dev;
+	err = snd_dma_alloc_pages(h->dma.type,
+				  h->dma.dev,
+				  BUF_SIZE*GRAVEYARD_BUFS,
+				  &h->gdma);
+	if (err < 0) {
+		printk(KERN_ERR PFX "cannot allocate graveyard buffer!\n");
+		return err;
+	}
+	
+	/* initialize silence buffers */
+	err = snd_dma_alloc_pages(h->dma.type,
+				  h->dma.dev,
+				  BUF_SIZE*SILENCE_BUFS,
+				  &h->sdma);
+	if (err < 0) {
+		printk(KERN_ERR PFX "cannot allocate silence buffer!\n");
+		return err;
+	}
+
+	/* pre-allocate space for DMA */
+	snd_pcm_set_managed_buffer_all(pcm, h->dma.type, h->dma.dev,
+				       MAX_BUF_SIZE, MAX_BUF_SIZE);
+
+	h->st.format = snd_harmony_set_data_format(h,
+		SNDRV_PCM_FORMAT_S16_BE, 1);
+
+	return 0;
+}
+
+static void 
+snd_harmony_set_new_gain(struct snd_harmony *h)
+{
+ 	harmony_wait_for_control(h);
+	harmony_write(h, HARMONY_GAINCTL, h->st.gain);
+}
+
+static int 
+snd_harmony_mixercontrol_info(struct snd_kcontrol *kc, 
+			      struct snd_ctl_elem_info *uinfo)
+{
+	int mask = (kc->private_value >> 16) & 0xff;
+	int left_shift = (kc->private_value) & 0xff;
+	int right_shift = (kc->private_value >> 8) & 0xff;
+	
+	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : 
+		       SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = left_shift == right_shift ? 1 : 2;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = mask;
+
+	return 0;
+}
+
+static int 
+snd_harmony_volume_get(struct snd_kcontrol *kc, 
+		       struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_harmony *h = snd_kcontrol_chip(kc);
+	int shift_left = (kc->private_value) & 0xff;
+	int shift_right = (kc->private_value >> 8) & 0xff;
+	int mask = (kc->private_value >> 16) & 0xff;
+	int invert = (kc->private_value >> 24) & 0xff;
+	int left, right;
+	
+	spin_lock_irq(&h->mixer_lock);
+
+	left = (h->st.gain >> shift_left) & mask;
+	right = (h->st.gain >> shift_right) & mask;
+	if (invert) {
+		left = mask - left;
+		right = mask - right;
+	}
+	
+	ucontrol->value.integer.value[0] = left;
+	if (shift_left != shift_right)
+		ucontrol->value.integer.value[1] = right;
+
+	spin_unlock_irq(&h->mixer_lock);
+
+	return 0;
+}  
+
+static int 
+snd_harmony_volume_put(struct snd_kcontrol *kc, 
+		       struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_harmony *h = snd_kcontrol_chip(kc);
+	int shift_left = (kc->private_value) & 0xff;
+	int shift_right = (kc->private_value >> 8) & 0xff;
+	int mask = (kc->private_value >> 16) & 0xff;
+	int invert = (kc->private_value >> 24) & 0xff;
+	int left, right;
+	int old_gain = h->st.gain;
+	
+	spin_lock_irq(&h->mixer_lock);
+
+	left = ucontrol->value.integer.value[0] & mask;
+	if (invert)
+		left = mask - left;
+	h->st.gain &= ~( (mask << shift_left ) );
+ 	h->st.gain |= (left << shift_left);
+
+	if (shift_left != shift_right) {
+		right = ucontrol->value.integer.value[1] & mask;
+		if (invert)
+			right = mask - right;
+		h->st.gain &= ~( (mask << shift_right) );
+		h->st.gain |= (right << shift_right);
+	}
+
+	snd_harmony_set_new_gain(h);
+
+	spin_unlock_irq(&h->mixer_lock);
+	
+	return h->st.gain != old_gain;
+}
+
+static int 
+snd_harmony_captureroute_info(struct snd_kcontrol *kc, 
+			      struct snd_ctl_elem_info *uinfo)
+{
+	static const char * const texts[2] = { "Line", "Mic" };
+
+	return snd_ctl_enum_info(uinfo, 1, 2, texts);
+}
+
+static int 
+snd_harmony_captureroute_get(struct snd_kcontrol *kc, 
+			     struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_harmony *h = snd_kcontrol_chip(kc);
+	int value;
+	
+	spin_lock_irq(&h->mixer_lock);
+
+	value = (h->st.gain >> HARMONY_GAIN_IS_SHIFT) & 1;
+	ucontrol->value.enumerated.item[0] = value;
+
+	spin_unlock_irq(&h->mixer_lock);
+
+	return 0;
+}  
+
+static int 
+snd_harmony_captureroute_put(struct snd_kcontrol *kc, 
+			     struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_harmony *h = snd_kcontrol_chip(kc);
+	int value;
+	int old_gain = h->st.gain;
+	
+	spin_lock_irq(&h->mixer_lock);
+
+	value = ucontrol->value.enumerated.item[0] & 1;
+	h->st.gain &= ~HARMONY_GAIN_IS_MASK;
+ 	h->st.gain |= value << HARMONY_GAIN_IS_SHIFT;
+
+	snd_harmony_set_new_gain(h);
+
+	spin_unlock_irq(&h->mixer_lock);
+	
+	return h->st.gain != old_gain;
+}
+
+#define HARMONY_CONTROLS	ARRAY_SIZE(snd_harmony_controls)
+
+#define HARMONY_VOLUME(xname, left_shift, right_shift, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,                \
+  .info = snd_harmony_mixercontrol_info,                             \
+  .get = snd_harmony_volume_get, .put = snd_harmony_volume_put,      \
+  .private_value = ((left_shift) | ((right_shift) << 8) |            \
+                   ((mask) << 16) | ((invert) << 24)) }
+
+static const struct snd_kcontrol_new snd_harmony_controls[] = {
+	HARMONY_VOLUME("Master Playback Volume", HARMONY_GAIN_LO_SHIFT, 
+		       HARMONY_GAIN_RO_SHIFT, HARMONY_GAIN_OUT, 1),
+	HARMONY_VOLUME("Capture Volume", HARMONY_GAIN_LI_SHIFT,
+		       HARMONY_GAIN_RI_SHIFT, HARMONY_GAIN_IN, 0),
+	HARMONY_VOLUME("Monitor Volume", HARMONY_GAIN_MA_SHIFT,
+		       HARMONY_GAIN_MA_SHIFT, HARMONY_GAIN_MA, 1),
+	{
+		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+		.name = "Input Route",
+		.info = snd_harmony_captureroute_info,
+		.get = snd_harmony_captureroute_get,
+		.put = snd_harmony_captureroute_put
+	},
+	HARMONY_VOLUME("Internal Speaker Switch", HARMONY_GAIN_SE_SHIFT,
+		       HARMONY_GAIN_SE_SHIFT, 1, 0),
+	HARMONY_VOLUME("Line-Out Switch", HARMONY_GAIN_LE_SHIFT,
+		       HARMONY_GAIN_LE_SHIFT, 1, 0),
+	HARMONY_VOLUME("Headphones Switch", HARMONY_GAIN_HE_SHIFT,
+		       HARMONY_GAIN_HE_SHIFT, 1, 0),
+};
+
+static void
+snd_harmony_mixer_reset(struct snd_harmony *h)
+{
+	harmony_mute(h);
+	harmony_reset(h);
+	h->st.gain = HARMONY_GAIN_DEFAULT;
+	harmony_unmute(h);
+}
+
+static int
+snd_harmony_mixer_init(struct snd_harmony *h)
+{
+	struct snd_card *card;
+	int idx, err;
+
+	if (snd_BUG_ON(!h))
+		return -EINVAL;
+	card = h->card;
+	strcpy(card->mixername, "Harmony Gain control interface");
+
+	for (idx = 0; idx < HARMONY_CONTROLS; idx++) {
+		err = snd_ctl_add(card, 
+				  snd_ctl_new1(&snd_harmony_controls[idx], h));
+		if (err < 0)
+			return err;
+	}
+	
+	snd_harmony_mixer_reset(h);
+
+	return 0;
+}
+
+static int
+snd_harmony_free(struct snd_harmony *h)
+{
+        if (h->gdma.addr)
+                snd_dma_free_pages(&h->gdma);
+        if (h->sdma.addr)
+                snd_dma_free_pages(&h->sdma);
+
+	if (h->irq >= 0)
+		free_irq(h->irq, h);
+
+	iounmap(h->iobase);
+	kfree(h);
+	return 0;
+}
+
+static int
+snd_harmony_dev_free(struct snd_device *dev)
+{
+	struct snd_harmony *h = dev->device_data;
+	return snd_harmony_free(h);
+}
+
+static int
+snd_harmony_create(struct snd_card *card, 
+		   struct parisc_device *padev, 
+		   struct snd_harmony **rchip)
+{
+	int err;
+	struct snd_harmony *h;
+	static const struct snd_device_ops ops = {
+		.dev_free = snd_harmony_dev_free,
+	};
+
+	*rchip = NULL;
+
+	h = kzalloc(sizeof(*h), GFP_KERNEL);
+	if (h == NULL)
+		return -ENOMEM;
+
+	h->hpa = padev->hpa.start;
+	h->card = card;
+	h->dev = padev;
+	h->irq = -1;
+	h->iobase = ioremap(padev->hpa.start, HARMONY_SIZE);
+	if (h->iobase == NULL) {
+		printk(KERN_ERR PFX "unable to remap hpa 0x%lx\n",
+		       (unsigned long)padev->hpa.start);
+		err = -EBUSY;
+		goto free_and_ret;
+	}
+		
+	err = request_irq(padev->irq, snd_harmony_interrupt, 0,
+			  "harmony", h);
+	if (err) {
+		printk(KERN_ERR PFX "could not obtain interrupt %d",
+		       padev->irq);
+		goto free_and_ret;
+	}
+	h->irq = padev->irq;
+
+	spin_lock_init(&h->mixer_lock);
+	spin_lock_init(&h->lock);
+
+	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, h, &ops);
+	if (err < 0)
+		goto free_and_ret;
+
+	*rchip = h;
+
+	return 0;
+
+free_and_ret:
+	snd_harmony_free(h);
+	return err;
+}
+
+static int __init
+snd_harmony_probe(struct parisc_device *padev)
+{
+	int err;
+	struct snd_card *card;
+	struct snd_harmony *h;
+
+	err = snd_card_new(&padev->dev, index, id, THIS_MODULE, 0, &card);
+	if (err < 0)
+		return err;
+
+	err = snd_harmony_create(card, padev, &h);
+	if (err < 0)
+		goto free_and_ret;
+
+	err = snd_harmony_pcm_init(h);
+	if (err < 0)
+		goto free_and_ret;
+
+	err = snd_harmony_mixer_init(h);
+	if (err < 0)
+		goto free_and_ret;
+
+	strcpy(card->driver, "harmony");
+	strcpy(card->shortname, "Harmony");
+	sprintf(card->longname, "%s at 0x%lx, irq %i",
+		card->shortname, h->hpa, h->irq);
+
+	err = snd_card_register(card);
+	if (err < 0)
+		goto free_and_ret;
+
+	parisc_set_drvdata(padev, card);
+	return 0;
+
+free_and_ret:
+	snd_card_free(card);
+	return err;
+}
+
+static void __exit
+snd_harmony_remove(struct parisc_device *padev)
+{
+	snd_card_free(parisc_get_drvdata(padev));
+}
+
+static struct parisc_driver snd_harmony_driver __refdata = {
+	.name = "harmony",
+	.id_table = snd_harmony_devtable,
+	.probe = snd_harmony_probe,
+	.remove = __exit_p(snd_harmony_remove),
+};
+
+static int __init 
+alsa_harmony_init(void)
+{
+	return register_parisc_driver(&snd_harmony_driver);
+}
+
+static void __exit
+alsa_harmony_fini(void)
+{
+	unregister_parisc_driver(&snd_harmony_driver);
+}
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>");
+MODULE_DESCRIPTION("Harmony sound driver");
+
+module_init(alsa_harmony_init);
+module_exit(alsa_harmony_fini);