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, 541 insertions, 0 deletions

diff --git a/drivers/video/fbdev/tcx.c b/drivers/video/fbdev/tcx.c
new file mode 100644
index 000000000..01d87f533
--- /dev/null
+++ b/drivers/video/fbdev/tcx.c
@@ -0,0 +1,541 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* tcx.c: TCX frame buffer driver
+ *
+ * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
+ * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
+ *
+ * Driver layout based loosely on tgafb.c, see that file for credits.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+#include <linux/mm.h>
+#include <linux/of_device.h>
+
+#include <asm/io.h>
+#include <asm/fbio.h>
+
+#include "sbuslib.h"
+
+/*
+ * Local functions.
+ */
+
+static int tcx_setcolreg(unsigned, unsigned, unsigned, unsigned,
+			 unsigned, struct fb_info *);
+static int tcx_blank(int, struct fb_info *);
+
+static int tcx_mmap(struct fb_info *, struct vm_area_struct *);
+static int tcx_ioctl(struct fb_info *, unsigned int, unsigned long);
+static int tcx_pan_display(struct fb_var_screeninfo *, struct fb_info *);
+
+/*
+ *  Frame buffer operations
+ */
+
+static const struct fb_ops tcx_ops = {
+	.owner			= THIS_MODULE,
+	.fb_setcolreg		= tcx_setcolreg,
+	.fb_blank		= tcx_blank,
+	.fb_pan_display		= tcx_pan_display,
+	.fb_fillrect		= cfb_fillrect,
+	.fb_copyarea		= cfb_copyarea,
+	.fb_imageblit		= cfb_imageblit,
+	.fb_mmap		= tcx_mmap,
+	.fb_ioctl		= tcx_ioctl,
+#ifdef CONFIG_COMPAT
+	.fb_compat_ioctl	= sbusfb_compat_ioctl,
+#endif
+};
+
+/* THC definitions */
+#define TCX_THC_MISC_REV_SHIFT       16
+#define TCX_THC_MISC_REV_MASK        15
+#define TCX_THC_MISC_VSYNC_DIS       (1 << 25)
+#define TCX_THC_MISC_HSYNC_DIS       (1 << 24)
+#define TCX_THC_MISC_RESET           (1 << 12)
+#define TCX_THC_MISC_VIDEO           (1 << 10)
+#define TCX_THC_MISC_SYNC            (1 << 9)
+#define TCX_THC_MISC_VSYNC           (1 << 8)
+#define TCX_THC_MISC_SYNC_ENAB       (1 << 7)
+#define TCX_THC_MISC_CURS_RES        (1 << 6)
+#define TCX_THC_MISC_INT_ENAB        (1 << 5)
+#define TCX_THC_MISC_INT             (1 << 4)
+#define TCX_THC_MISC_INIT            0x9f
+#define TCX_THC_REV_REV_SHIFT        20
+#define TCX_THC_REV_REV_MASK         15
+#define TCX_THC_REV_MINREV_SHIFT     28
+#define TCX_THC_REV_MINREV_MASK      15
+
+/* The contents are unknown */
+struct tcx_tec {
+	u32 tec_matrix;
+	u32 tec_clip;
+	u32 tec_vdc;
+};
+
+struct tcx_thc {
+	u32 thc_rev;
+	u32 thc_pad0[511];
+	u32 thc_hs;		/* hsync timing */
+	u32 thc_hsdvs;
+	u32 thc_hd;
+	u32 thc_vs;		/* vsync timing */
+	u32 thc_vd;
+	u32 thc_refresh;
+	u32 thc_misc;
+	u32 thc_pad1[56];
+	u32 thc_cursxy;	/* cursor x,y position (16 bits each) */
+	u32 thc_cursmask[32];	/* cursor mask bits */
+	u32 thc_cursbits[32];	/* what to show where mask enabled */
+};
+
+struct bt_regs {
+	u32 addr;
+	u32 color_map;
+	u32 control;
+	u32 cursor;
+};
+
+#define TCX_MMAP_ENTRIES 14
+
+struct tcx_par {
+	spinlock_t		lock;
+	struct bt_regs		__iomem *bt;
+	struct tcx_thc		__iomem *thc;
+	struct tcx_tec		__iomem *tec;
+	u32			__iomem *cplane;
+
+	u32			flags;
+#define TCX_FLAG_BLANKED	0x00000001
+
+	unsigned long		which_io;
+
+	struct sbus_mmap_map	mmap_map[TCX_MMAP_ENTRIES];
+	int			lowdepth;
+};
+
+/* Reset control plane so that WID is 8-bit plane. */
+static void __tcx_set_control_plane(struct fb_info *info)
+{
+	struct tcx_par *par = info->par;
+	u32 __iomem *p, *pend;
+
+	if (par->lowdepth)
+		return;
+
+	p = par->cplane;
+	if (p == NULL)
+		return;
+	for (pend = p + info->fix.smem_len; p < pend; p++) {
+		u32 tmp = sbus_readl(p);
+
+		tmp &= 0xffffff;
+		sbus_writel(tmp, p);
+	}
+}
+
+static void tcx_reset(struct fb_info *info)
+{
+	struct tcx_par *par = (struct tcx_par *) info->par;
+	unsigned long flags;
+
+	spin_lock_irqsave(&par->lock, flags);
+	__tcx_set_control_plane(info);
+	spin_unlock_irqrestore(&par->lock, flags);
+}
+
+static int tcx_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	tcx_reset(info);
+	return 0;
+}
+
+/**
+ *      tcx_setcolreg - Optional function. Sets a color register.
+ *      @regno: boolean, 0 copy local, 1 get_user() function
+ *      @red: frame buffer colormap structure
+ *      @green: The green value which can be up to 16 bits wide
+ *      @blue:  The blue value which can be up to 16 bits wide.
+ *      @transp: If supported the alpha value which can be up to 16 bits wide.
+ *      @info: frame buffer info structure
+ */
+static int tcx_setcolreg(unsigned regno,
+			 unsigned red, unsigned green, unsigned blue,
+			 unsigned transp, struct fb_info *info)
+{
+	struct tcx_par *par = (struct tcx_par *) info->par;
+	struct bt_regs __iomem *bt = par->bt;
+	unsigned long flags;
+
+	if (regno >= 256)
+		return 1;
+
+	red >>= 8;
+	green >>= 8;
+	blue >>= 8;
+
+	spin_lock_irqsave(&par->lock, flags);
+
+	sbus_writel(regno << 24, &bt->addr);
+	sbus_writel(red << 24, &bt->color_map);
+	sbus_writel(green << 24, &bt->color_map);
+	sbus_writel(blue << 24, &bt->color_map);
+
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	return 0;
+}
+
+/**
+ *      tcx_blank - Optional function.  Blanks the display.
+ *      @blank: the blank mode we want.
+ *      @info: frame buffer structure that represents a single frame buffer
+ */
+static int
+tcx_blank(int blank, struct fb_info *info)
+{
+	struct tcx_par *par = (struct tcx_par *) info->par;
+	struct tcx_thc __iomem *thc = par->thc;
+	unsigned long flags;
+	u32 val;
+
+	spin_lock_irqsave(&par->lock, flags);
+
+	val = sbus_readl(&thc->thc_misc);
+
+	switch (blank) {
+	case FB_BLANK_UNBLANK: /* Unblanking */
+		val &= ~(TCX_THC_MISC_VSYNC_DIS |
+			 TCX_THC_MISC_HSYNC_DIS);
+		val |= TCX_THC_MISC_VIDEO;
+		par->flags &= ~TCX_FLAG_BLANKED;
+		break;
+
+	case FB_BLANK_NORMAL: /* Normal blanking */
+		val &= ~TCX_THC_MISC_VIDEO;
+		par->flags |= TCX_FLAG_BLANKED;
+		break;
+
+	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
+		val |= TCX_THC_MISC_VSYNC_DIS;
+		break;
+	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
+		val |= TCX_THC_MISC_HSYNC_DIS;
+		break;
+
+	case FB_BLANK_POWERDOWN: /* Poweroff */
+		break;
+	}
+
+	sbus_writel(val, &thc->thc_misc);
+
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	return 0;
+}
+
+static struct sbus_mmap_map __tcx_mmap_map[TCX_MMAP_ENTRIES] = {
+	{
+		.voff	= TCX_RAM8BIT,
+		.size	= SBUS_MMAP_FBSIZE(1)
+	},
+	{
+		.voff	= TCX_RAM24BIT,
+		.size	= SBUS_MMAP_FBSIZE(4)
+	},
+	{
+		.voff	= TCX_UNK3,
+		.size	= SBUS_MMAP_FBSIZE(8)
+	},
+	{
+		.voff	= TCX_UNK4,
+		.size	= SBUS_MMAP_FBSIZE(8)
+	},
+	{
+		.voff	= TCX_CONTROLPLANE,
+		.size	= SBUS_MMAP_FBSIZE(4)
+	},
+	{
+		.voff	= TCX_UNK6,
+		.size	= SBUS_MMAP_FBSIZE(8)
+	},
+	{
+		.voff	= TCX_UNK7,
+		.size	= SBUS_MMAP_FBSIZE(8)
+	},
+	{
+		.voff	= TCX_TEC,
+		.size	= PAGE_SIZE
+	},
+	{
+		.voff	= TCX_BTREGS,
+		.size	= PAGE_SIZE
+	},
+	{
+		.voff	= TCX_THC,
+		.size	= PAGE_SIZE
+	},
+	{
+		.voff	= TCX_DHC,
+		.size	= PAGE_SIZE
+	},
+	{
+		.voff	= TCX_ALT,
+		.size	= PAGE_SIZE
+	},
+	{
+		.voff	= TCX_UNK2,
+		.size	= 0x20000
+	},
+	{ .size = 0 }
+};
+
+static int tcx_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+	struct tcx_par *par = (struct tcx_par *)info->par;
+
+	return sbusfb_mmap_helper(par->mmap_map,
+				  info->fix.smem_start, info->fix.smem_len,
+				  par->which_io, vma);
+}
+
+static int tcx_ioctl(struct fb_info *info, unsigned int cmd,
+		     unsigned long arg)
+{
+	struct tcx_par *par = (struct tcx_par *) info->par;
+
+	return sbusfb_ioctl_helper(cmd, arg, info,
+				   FBTYPE_TCXCOLOR,
+				   (par->lowdepth ? 8 : 24),
+				   info->fix.smem_len);
+}
+
+/*
+ *  Initialisation
+ */
+
+static void
+tcx_init_fix(struct fb_info *info, int linebytes)
+{
+	struct tcx_par *par = (struct tcx_par *)info->par;
+	const char *tcx_name;
+
+	if (par->lowdepth)
+		tcx_name = "TCX8";
+	else
+		tcx_name = "TCX24";
+
+	strscpy(info->fix.id, tcx_name, sizeof(info->fix.id));
+
+	info->fix.type = FB_TYPE_PACKED_PIXELS;
+	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+
+	info->fix.line_length = linebytes;
+
+	info->fix.accel = FB_ACCEL_SUN_TCX;
+}
+
+static void tcx_unmap_regs(struct platform_device *op, struct fb_info *info,
+			   struct tcx_par *par)
+{
+	if (par->tec)
+		of_iounmap(&op->resource[7],
+			   par->tec, sizeof(struct tcx_tec));
+	if (par->thc)
+		of_iounmap(&op->resource[9],
+			   par->thc, sizeof(struct tcx_thc));
+	if (par->bt)
+		of_iounmap(&op->resource[8],
+			   par->bt, sizeof(struct bt_regs));
+	if (par->cplane)
+		of_iounmap(&op->resource[4],
+			   par->cplane, info->fix.smem_len * sizeof(u32));
+	if (info->screen_base)
+		of_iounmap(&op->resource[0],
+			   info->screen_base, info->fix.smem_len);
+}
+
+static int tcx_probe(struct platform_device *op)
+{
+	struct device_node *dp = op->dev.of_node;
+	struct fb_info *info;
+	struct tcx_par *par;
+	int linebytes, i, err;
+
+	info = framebuffer_alloc(sizeof(struct tcx_par), &op->dev);
+
+	err = -ENOMEM;
+	if (!info)
+		goto out_err;
+	par = info->par;
+
+	spin_lock_init(&par->lock);
+
+	par->lowdepth =
+		(of_find_property(dp, "tcx-8-bit", NULL) != NULL);
+
+	sbusfb_fill_var(&info->var, dp, 8);
+	info->var.red.length = 8;
+	info->var.green.length = 8;
+	info->var.blue.length = 8;
+
+	linebytes = of_getintprop_default(dp, "linebytes",
+					  info->var.xres);
+	info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
+
+	par->tec = of_ioremap(&op->resource[7], 0,
+				  sizeof(struct tcx_tec), "tcx tec");
+	par->thc = of_ioremap(&op->resource[9], 0,
+				  sizeof(struct tcx_thc), "tcx thc");
+	par->bt = of_ioremap(&op->resource[8], 0,
+				 sizeof(struct bt_regs), "tcx dac");
+	info->screen_base = of_ioremap(&op->resource[0], 0,
+					   info->fix.smem_len, "tcx ram");
+	if (!par->tec || !par->thc ||
+	    !par->bt || !info->screen_base)
+		goto out_unmap_regs;
+
+	memcpy(&par->mmap_map, &__tcx_mmap_map, sizeof(par->mmap_map));
+	if (!par->lowdepth) {
+		par->cplane = of_ioremap(&op->resource[4], 0,
+					     info->fix.smem_len * sizeof(u32),
+					     "tcx cplane");
+		if (!par->cplane)
+			goto out_unmap_regs;
+	} else {
+		par->mmap_map[1].size = SBUS_MMAP_EMPTY;
+		par->mmap_map[4].size = SBUS_MMAP_EMPTY;
+		par->mmap_map[5].size = SBUS_MMAP_EMPTY;
+		par->mmap_map[6].size = SBUS_MMAP_EMPTY;
+	}
+
+	info->fix.smem_start = op->resource[0].start;
+	par->which_io = op->resource[0].flags & IORESOURCE_BITS;
+
+	for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
+		int j;
+
+		switch (i) {
+		case 10:
+			j = 12;
+			break;
+
+		case 11: case 12:
+			j = i - 1;
+			break;
+
+		default:
+			j = i;
+			break;
+		}
+		par->mmap_map[i].poff = op->resource[j].start;
+	}
+
+	info->flags = FBINFO_DEFAULT;
+	info->fbops = &tcx_ops;
+
+	/* Initialize brooktree DAC. */
+	sbus_writel(0x04 << 24, &par->bt->addr);         /* color planes */
+	sbus_writel(0xff << 24, &par->bt->control);
+	sbus_writel(0x05 << 24, &par->bt->addr);
+	sbus_writel(0x00 << 24, &par->bt->control);
+	sbus_writel(0x06 << 24, &par->bt->addr);         /* overlay plane */
+	sbus_writel(0x73 << 24, &par->bt->control);
+	sbus_writel(0x07 << 24, &par->bt->addr);
+	sbus_writel(0x00 << 24, &par->bt->control);
+
+	tcx_reset(info);
+
+	tcx_blank(FB_BLANK_UNBLANK, info);
+
+	if (fb_alloc_cmap(&info->cmap, 256, 0))
+		goto out_unmap_regs;
+
+	fb_set_cmap(&info->cmap, info);
+	tcx_init_fix(info, linebytes);
+
+	err = register_framebuffer(info);
+	if (err < 0)
+		goto out_dealloc_cmap;
+
+	dev_set_drvdata(&op->dev, info);
+
+	printk(KERN_INFO "%pOF: TCX at %lx:%lx, %s\n",
+	       dp,
+	       par->which_io,
+	       info->fix.smem_start,
+	       par->lowdepth ? "8-bit only" : "24-bit depth");
+
+	return 0;
+
+out_dealloc_cmap:
+	fb_dealloc_cmap(&info->cmap);
+
+out_unmap_regs:
+	tcx_unmap_regs(op, info, par);
+	framebuffer_release(info);
+
+out_err:
+	return err;
+}
+
+static int tcx_remove(struct platform_device *op)
+{
+	struct fb_info *info = dev_get_drvdata(&op->dev);
+	struct tcx_par *par = info->par;
+
+	unregister_framebuffer(info);
+	fb_dealloc_cmap(&info->cmap);
+
+	tcx_unmap_regs(op, info, par);
+
+	framebuffer_release(info);
+
+	return 0;
+}
+
+static const struct of_device_id tcx_match[] = {
+	{
+		.name = "SUNW,tcx",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, tcx_match);
+
+static struct platform_driver tcx_driver = {
+	.driver = {
+		.name = "tcx",
+		.of_match_table = tcx_match,
+	},
+	.probe		= tcx_probe,
+	.remove		= tcx_remove,
+};
+
+static int __init tcx_init(void)
+{
+	if (fb_get_options("tcxfb", NULL))
+		return -ENODEV;
+
+	return platform_driver_register(&tcx_driver);
+}
+
+static void __exit tcx_exit(void)
+{
+	platform_driver_unregister(&tcx_driver);
+}
+
+module_init(tcx_init);
+module_exit(tcx_exit);
+
+MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
+MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
+MODULE_VERSION("2.0");
+MODULE_LICENSE("GPL");