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, 317 insertions, 0 deletions

diff --git a/arch/mips/include/asm/sgi/hpc3.h b/arch/mips/include/asm/sgi/hpc3.h
new file mode 100644
index 000000000..c0e3dc029
--- /dev/null
+++ b/arch/mips/include/asm/sgi/hpc3.h
@@ -0,0 +1,317 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * hpc3.h: Definitions for SGI HPC3 controller
+ *
+ * Copyright (C) 1996 David S. Miller
+ * Copyright (C) 1998 Ralf Baechle
+ */
+
+#ifndef _SGI_HPC3_H
+#define _SGI_HPC3_H
+
+#include <linux/types.h>
+#include <asm/page.h>
+
+/* An HPC DMA descriptor. */
+struct hpc_dma_desc {
+	u32 pbuf;	/* physical address of data buffer */
+	u32 cntinfo;	/* counter and info bits */
+#define HPCDMA_EOX	0x80000000 /* last desc in chain for tx */
+#define HPCDMA_EOR	0x80000000 /* last desc in chain for rx */
+#define HPCDMA_EOXP	0x40000000 /* end of packet for tx */
+#define HPCDMA_EORP	0x40000000 /* end of packet for rx */
+#define HPCDMA_XIE	0x20000000 /* irq generated when at end of this desc */
+#define HPCDMA_XIU	0x01000000 /* Tx buffer in use by CPU. */
+#define HPCDMA_EIPC	0x00ff0000 /* SEEQ ethernet special xternal bytecount */
+#define HPCDMA_ETXD	0x00008000 /* set to one by HPC when packet tx'd */
+#define HPCDMA_OWN	0x00004000 /* Denotes ring buffer ownership on rx */
+#define HPCDMA_BCNT	0x00003fff /* size in bytes of this dma buffer */
+
+	u32 pnext;	/* paddr of next hpc_dma_desc if any */
+};
+
+/* The set of regs for each HPC3 PBUS DMA channel. */
+struct hpc3_pbus_dmacregs {
+	volatile u32 pbdma_bptr;	/* pbus dma channel buffer ptr */
+	volatile u32 pbdma_dptr;	/* pbus dma channel desc ptr */
+	u32 _unused0[0x1000/4 - 2];	/* padding */
+	volatile u32 pbdma_ctrl;	/* pbus dma channel control register has
+					 * completely different meaning for read
+					 * compared with write */
+	/* read */
+#define HPC3_PDMACTRL_INT	0x00000001 /* interrupt (cleared after read) */
+#define HPC3_PDMACTRL_ISACT	0x00000002 /* channel active */
+	/* write */
+#define HPC3_PDMACTRL_SEL	0x00000002 /* little endian transfer */
+#define HPC3_PDMACTRL_RCV	0x00000004 /* direction is receive */
+#define HPC3_PDMACTRL_FLSH	0x00000008 /* enable flush for receive DMA */
+#define HPC3_PDMACTRL_ACT	0x00000010 /* start dma transfer */
+#define HPC3_PDMACTRL_LD	0x00000020 /* load enable for ACT */
+#define HPC3_PDMACTRL_RT	0x00000040 /* Use realtime GIO bus servicing */
+#define HPC3_PDMACTRL_HW	0x0000ff00 /* DMA High-water mark */
+#define HPC3_PDMACTRL_FB	0x003f0000 /* Ptr to beginning of fifo */
+#define HPC3_PDMACTRL_FE	0x3f000000 /* Ptr to end of fifo */
+
+	u32 _unused1[0x1000/4 - 1];	/* padding */
+};
+
+/* The HPC3 SCSI registers, this does not include external ones. */
+struct hpc3_scsiregs {
+	volatile u32 cbptr;	/* current dma buffer ptr, diagnostic use only */
+	volatile u32 ndptr;	/* next dma descriptor ptr */
+	u32 _unused0[0x1000/4 - 2];	/* padding */
+	volatile u32 bcd;	/* byte count info */
+#define HPC3_SBCD_BCNTMSK 0x00003fff /* bytes to transfer from/to memory */
+#define HPC3_SBCD_XIE	  0x00004000 /* Send IRQ when done with cur buf */
+#define HPC3_SBCD_EOX	  0x00008000 /* Indicates this is last buf in chain */
+
+	volatile u32 ctrl;    /* control register */
+#define HPC3_SCTRL_IRQ	  0x01 /* IRQ asserted, either dma done or parity */
+#define HPC3_SCTRL_ENDIAN 0x02 /* DMA endian mode, 0=big 1=little */
+#define HPC3_SCTRL_DIR	  0x04 /* DMA direction, 1=dev2mem 0=mem2dev */
+#define HPC3_SCTRL_FLUSH  0x08 /* Tells HPC3 to flush scsi fifos */
+#define HPC3_SCTRL_ACTIVE 0x10 /* SCSI DMA channel is active */
+#define HPC3_SCTRL_AMASK  0x20 /* DMA active inhibits PIO */
+#define HPC3_SCTRL_CRESET 0x40 /* Resets dma channel and external controller */
+#define HPC3_SCTRL_PERR	  0x80 /* Bad parity on HPC3 iface to scsi controller */
+
+	volatile u32 gfptr;	/* current GIO fifo ptr */
+	volatile u32 dfptr;	/* current device fifo ptr */
+	volatile u32 dconfig;	/* DMA configuration register */
+#define HPC3_SDCFG_HCLK 0x00001 /* Enable DMA half clock mode */
+#define HPC3_SDCFG_D1	0x00006 /* Cycles to spend in D1 state */
+#define HPC3_SDCFG_D2	0x00038 /* Cycles to spend in D2 state */
+#define HPC3_SDCFG_D3	0x001c0 /* Cycles to spend in D3 state */
+#define HPC3_SDCFG_HWAT 0x00e00 /* DMA high water mark */
+#define HPC3_SDCFG_HW	0x01000 /* Enable 16-bit halfword DMA accesses to scsi */
+#define HPC3_SDCFG_SWAP 0x02000 /* Byte swap all DMA accesses */
+#define HPC3_SDCFG_EPAR 0x04000 /* Enable parity checking for DMA */
+#define HPC3_SDCFG_POLL 0x08000 /* hd_dreq polarity control */
+#define HPC3_SDCFG_ERLY 0x30000 /* hd_dreq behavior control bits */
+
+	volatile u32 pconfig;	/* PIO configuration register */
+#define HPC3_SPCFG_P3	0x0003 /* Cycles to spend in P3 state */
+#define HPC3_SPCFG_P2W	0x001c /* Cycles to spend in P2 state for writes */
+#define HPC3_SPCFG_P2R	0x01e0 /* Cycles to spend in P2 state for reads */
+#define HPC3_SPCFG_P1	0x0e00 /* Cycles to spend in P1 state */
+#define HPC3_SPCFG_HW	0x1000 /* Enable 16-bit halfword PIO accesses to scsi */
+#define HPC3_SPCFG_SWAP 0x2000 /* Byte swap all PIO accesses */
+#define HPC3_SPCFG_EPAR 0x4000 /* Enable parity checking for PIO */
+#define HPC3_SPCFG_FUJI 0x8000 /* Fujitsu scsi controller mode for faster dma/pio */
+
+	u32 _unused1[0x1000/4 - 6];	/* padding */
+};
+
+/* SEEQ ethernet HPC3 registers, only one seeq per HPC3. */
+struct hpc3_ethregs {
+	/* Receiver registers. */
+	volatile u32 rx_cbptr;	 /* current dma buffer ptr, diagnostic use only */
+	volatile u32 rx_ndptr;	 /* next dma descriptor ptr */
+	u32 _unused0[0x1000/4 - 2];	/* padding */
+	volatile u32 rx_bcd;	/* byte count info */
+#define HPC3_ERXBCD_BCNTMSK 0x00003fff /* bytes to be sent to memory */
+#define HPC3_ERXBCD_XIE	    0x20000000 /* HPC3 interrupts cpu at end of this buf */
+#define HPC3_ERXBCD_EOX	    0x80000000 /* flags this as end of descriptor chain */
+
+	volatile u32 rx_ctrl;	/* control register */
+#define HPC3_ERXCTRL_STAT50 0x0000003f /* Receive status reg bits of Seeq8003 */
+#define HPC3_ERXCTRL_STAT6  0x00000040 /* Rdonly irq status */
+#define HPC3_ERXCTRL_STAT7  0x00000080 /* Rdonlt old/new status bit from Seeq */
+#define HPC3_ERXCTRL_ENDIAN 0x00000100 /* Endian for dma channel, little=1 big=0 */
+#define HPC3_ERXCTRL_ACTIVE 0x00000200 /* Tells if DMA transfer is in progress */
+#define HPC3_ERXCTRL_AMASK  0x00000400 /* Tells if ACTIVE inhibits PIO's to hpc3 */
+#define HPC3_ERXCTRL_RBO    0x00000800 /* Receive buffer overflow if set to 1 */
+
+	volatile u32 rx_gfptr;	/* current GIO fifo ptr */
+	volatile u32 rx_dfptr;	/* current device fifo ptr */
+	u32 _unused1;		/* padding */
+	volatile u32 reset;	/* reset register */
+#define HPC3_ERST_CRESET 0x1	/* Reset dma channel and external controller */
+#define HPC3_ERST_CLRIRQ 0x2	/* Clear channel interrupt */
+#define HPC3_ERST_LBACK	 0x4	/* Enable diagnostic loopback mode of Seeq8003 */
+
+	volatile u32 dconfig;	 /* DMA configuration register */
+#define HPC3_EDCFG_D1	 0x0000f /* Cycles to spend in D1 state for PIO */
+#define HPC3_EDCFG_D2	 0x000f0 /* Cycles to spend in D2 state for PIO */
+#define HPC3_EDCFG_D3	 0x00f00 /* Cycles to spend in D3 state for PIO */
+#define HPC3_EDCFG_WCTRL 0x01000 /* Enable writes of desc into ex ctrl port */
+#define HPC3_EDCFG_FRXDC 0x02000 /* Clear eop stat bits upon rxdc, hw seeq fix */
+#define HPC3_EDCFG_FEOP	 0x04000 /* Bad packet marker timeout enable */
+#define HPC3_EDCFG_FIRQ	 0x08000 /* Another bad packet timeout enable */
+#define HPC3_EDCFG_PTO	 0x30000 /* Programmed timeout value for above two */
+
+	volatile u32 pconfig;	/* PIO configuration register */
+#define HPC3_EPCFG_P1	 0x000f /* Cycles to spend in P1 state for PIO */
+#define HPC3_EPCFG_P2	 0x00f0 /* Cycles to spend in P2 state for PIO */
+#define HPC3_EPCFG_P3	 0x0f00 /* Cycles to spend in P3 state for PIO */
+#define HPC3_EPCFG_TST	 0x1000 /* Diagnostic ram test feature bit */
+
+	u32 _unused2[0x1000/4 - 8];	/* padding */
+
+	/* Transmitter registers. */
+	volatile u32 tx_cbptr;	/* current dma buffer ptr, diagnostic use only */
+	volatile u32 tx_ndptr;	/* next dma descriptor ptr */
+	u32 _unused3[0x1000/4 - 2];	/* padding */
+	volatile u32 tx_bcd;		/* byte count info */
+#define HPC3_ETXBCD_BCNTMSK 0x00003fff	/* bytes to be read from memory */
+#define HPC3_ETXBCD_ESAMP   0x10000000	/* if set, too late to add descriptor */
+#define HPC3_ETXBCD_XIE	    0x20000000	/* Interrupt cpu at end of cur desc */
+#define HPC3_ETXBCD_EOP	    0x40000000	/* Last byte of cur buf is end of packet */
+#define HPC3_ETXBCD_EOX	    0x80000000	/* This buf is the end of desc chain */
+
+	volatile u32 tx_ctrl;		/* control register */
+#define HPC3_ETXCTRL_STAT30 0x0000000f	/* Rdonly copy of seeq tx stat reg */
+#define HPC3_ETXCTRL_STAT4  0x00000010	/* Indicate late collision occurred */
+#define HPC3_ETXCTRL_STAT75 0x000000e0	/* Rdonly irq status from seeq */
+#define HPC3_ETXCTRL_ENDIAN 0x00000100	/* DMA channel endian mode, 1=little 0=big */
+#define HPC3_ETXCTRL_ACTIVE 0x00000200	/* DMA tx channel is active */
+#define HPC3_ETXCTRL_AMASK  0x00000400	/* Indicates ACTIVE inhibits PIO's */
+
+	volatile u32 tx_gfptr;		/* current GIO fifo ptr */
+	volatile u32 tx_dfptr;		/* current device fifo ptr */
+	u32 _unused4[0x1000/4 - 4];	/* padding */
+};
+
+struct hpc3_regs {
+	/* First regs for the PBUS 8 dma channels. */
+	struct hpc3_pbus_dmacregs pbdma[8];
+
+	/* Now the HPC scsi registers, we get two scsi reg sets. */
+	struct hpc3_scsiregs scsi_chan0, scsi_chan1;
+
+	/* The SEEQ hpc3 ethernet dma/control registers. */
+	struct hpc3_ethregs ethregs;
+
+	/* Here are where the hpc3 fifo's can be directly accessed
+	 * via PIO accesses.  Under normal operation we never stick
+	 * our grubby paws in here so it's just padding. */
+	u32 _unused0[0x18000/4];
+
+	/* HPC3 irq status regs.  Due to a peculiar bug you need to
+	 * look at two different register addresses to get at all of
+	 * the status bits.  The first reg can only reliably report
+	 * bits 4:0 of the status, and the second reg can only
+	 * reliably report bits 9:5 of the hpc3 irq status.  I told
+	 * you it was a peculiar bug. ;-)
+	 */
+	volatile u32 istat0;		/* Irq status, only bits <4:0> reliable. */
+#define HPC3_ISTAT_PBIMASK	0x0ff	/* irq bits for pbus devs 0 --> 7 */
+#define HPC3_ISTAT_SC0MASK	0x100	/* irq bit for scsi channel 0 */
+#define HPC3_ISTAT_SC1MASK	0x200	/* irq bit for scsi channel 1 */
+
+	volatile u32 gio_misc;		/* GIO misc control bits. */
+#define HPC3_GIOMISC_ERTIME	0x1	/* Enable external timer real time. */
+#define HPC3_GIOMISC_DENDIAN	0x2	/* dma descriptor endian, 1=lit 0=big */
+
+	u32 eeprom;			/* EEPROM data reg. */
+#define HPC3_EEPROM_EPROT	0x01	/* Protect register enable */
+#define HPC3_EEPROM_CSEL	0x02	/* Chip select */
+#define HPC3_EEPROM_ECLK	0x04	/* EEPROM clock */
+#define HPC3_EEPROM_DATO	0x08	/* Data out */
+#define HPC3_EEPROM_DATI	0x10	/* Data in */
+
+	volatile u32 istat1;		/* Irq status, only bits <9:5> reliable. */
+	volatile u32 bestat;		/* Bus error interrupt status reg. */
+#define HPC3_BESTAT_BLMASK	0x000ff /* Bus lane where bad parity occurred */
+#define HPC3_BESTAT_CTYPE	0x00100 /* Bus cycle type, 0=PIO 1=DMA */
+#define HPC3_BESTAT_PIDSHIFT	9
+#define HPC3_BESTAT_PIDMASK	0x3f700 /* DMA channel parity identifier */
+
+	u32 _unused1[0x14000/4 - 5];	/* padding */
+
+	/* Now direct PIO per-HPC3 peripheral access to external regs. */
+	volatile u32 scsi0_ext[256];	/* SCSI channel 0 external regs */
+	u32 _unused2[0x7c00/4];
+	volatile u32 scsi1_ext[256];	/* SCSI channel 1 external regs */
+	u32 _unused3[0x7c00/4];
+	volatile u32 eth_ext[320];	/* Ethernet external registers */
+	u32 _unused4[0x3b00/4];
+
+	/* Per-peripheral device external registers and DMA/PIO control. */
+	volatile u32 pbus_extregs[16][256];
+	volatile u32 pbus_dmacfg[8][128];
+	/* Cycles to spend in D3 for reads */
+#define HPC3_DMACFG_D3R_MASK		0x00000001
+#define HPC3_DMACFG_D3R_SHIFT		0
+	/* Cycles to spend in D4 for reads */
+#define HPC3_DMACFG_D4R_MASK		0x0000001e
+#define HPC3_DMACFG_D4R_SHIFT		1
+	/* Cycles to spend in D5 for reads */
+#define HPC3_DMACFG_D5R_MASK		0x000001e0
+#define HPC3_DMACFG_D5R_SHIFT		5
+	/* Cycles to spend in D3 for writes */
+#define HPC3_DMACFG_D3W_MASK		0x00000200
+#define HPC3_DMACFG_D3W_SHIFT		9
+	/* Cycles to spend in D4 for writes */
+#define HPC3_DMACFG_D4W_MASK		0x00003c00
+#define HPC3_DMACFG_D4W_SHIFT		10
+	/* Cycles to spend in D5 for writes */
+#define HPC3_DMACFG_D5W_MASK		0x0003c000
+#define HPC3_DMACFG_D5W_SHIFT		14
+	/* Enable 16-bit DMA access mode */
+#define HPC3_DMACFG_DS16		0x00040000
+	/* Places halfwords on high 16 bits of bus */
+#define HPC3_DMACFG_EVENHI		0x00080000
+	/* Make this device real time */
+#define HPC3_DMACFG_RTIME		0x00200000
+	/* 5 bit burst count for DMA device */
+#define HPC3_DMACFG_BURST_MASK		0x07c00000
+#define HPC3_DMACFG_BURST_SHIFT 22
+	/* Use live pbus_dreq unsynchronized signal */
+#define HPC3_DMACFG_DRQLIVE		0x08000000
+	volatile u32 pbus_piocfg[16][64];
+	/* Cycles to spend in P2 state for reads */
+#define HPC3_PIOCFG_P2R_MASK		0x00001
+#define HPC3_PIOCFG_P2R_SHIFT		0
+	/* Cycles to spend in P3 state for reads */
+#define HPC3_PIOCFG_P3R_MASK		0x0001e
+#define HPC3_PIOCFG_P3R_SHIFT		1
+	/* Cycles to spend in P4 state for reads */
+#define HPC3_PIOCFG_P4R_MASK		0x001e0
+#define HPC3_PIOCFG_P4R_SHIFT		5
+	/* Cycles to spend in P2 state for writes */
+#define HPC3_PIOCFG_P2W_MASK		0x00200
+#define HPC3_PIOCFG_P2W_SHIFT		9
+	/* Cycles to spend in P3 state for writes */
+#define HPC3_PIOCFG_P3W_MASK		0x03c00
+#define HPC3_PIOCFG_P3W_SHIFT		10
+	/* Cycles to spend in P4 state for writes */
+#define HPC3_PIOCFG_P4W_MASK		0x3c000
+#define HPC3_PIOCFG_P4W_SHIFT		14
+	/* Enable 16-bit PIO accesses */
+#define HPC3_PIOCFG_DS16		0x40000
+	/* Place even address bits in bits <15:8> */
+#define HPC3_PIOCFG_EVENHI		0x80000
+
+	/* PBUS PROM control regs. */
+	volatile u32 pbus_promwe;	/* PROM write enable register */
+#define HPC3_PROM_WENAB 0x1	/* Enable writes to the PROM */
+
+	u32 _unused5[0x0800/4 - 1];
+	volatile u32 pbus_promswap;	/* Chip select swap reg */
+#define HPC3_PROM_SWAP	0x1	/* invert GIO addr bit to select prom0 or prom1 */
+
+	u32 _unused6[0x0800/4 - 1];
+	volatile u32 pbus_gout; /* PROM general purpose output reg */
+#define HPC3_PROM_STAT	0x1	/* General purpose status bit in gout */
+
+	u32 _unused7[0x1000/4 - 1];
+	volatile u32 rtcregs[14];	/* Dallas clock registers */
+	u32 _unused8[50];
+	volatile u32 bbram[8192-50-14]; /* Battery backed ram */
+};
+
+/*
+ * It is possible to have two HPC3's within the address space on
+ * one machine, though only having one is more likely on an Indy.
+ */
+extern struct hpc3_regs *hpc3c0, *hpc3c1;
+#define HPC3_CHIP0_BASE		0x1fb80000	/* physical */
+#define HPC3_CHIP1_BASE		0x1fb00000	/* physical */
+
+extern void sgihpc_init(void);
+
+#endif /* _SGI_HPC3_H */