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, 751 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
new file mode 100644
index 000000000..692a16914
--- /dev/null
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
@@ -0,0 +1,751 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include "i915_selftest.h"
+
+#include "gt/intel_context.h"
+#include "gt/intel_engine_regs.h"
+#include "gt/intel_engine_user.h"
+#include "gt/intel_gpu_commands.h"
+#include "gt/intel_gt.h"
+#include "gt/intel_gt_regs.h"
+#include "gem/i915_gem_lmem.h"
+
+#include "gem/selftests/igt_gem_utils.h"
+#include "selftests/igt_flush_test.h"
+#include "selftests/mock_drm.h"
+#include "selftests/i915_random.h"
+#include "huge_gem_object.h"
+#include "mock_context.h"
+
+#define OW_SIZE 16                      /* in bytes */
+#define F_SUBTILE_SIZE 64               /* in bytes */
+#define F_TILE_WIDTH 128                /* in bytes */
+#define F_TILE_HEIGHT 32                /* in pixels */
+#define F_SUBTILE_WIDTH  OW_SIZE        /* in bytes */
+#define F_SUBTILE_HEIGHT 4              /* in pixels */
+
+static int linear_x_y_to_ftiled_pos(int x, int y, u32 stride, int bpp)
+{
+	int tile_base;
+	int tile_x, tile_y;
+	int swizzle, subtile;
+	int pixel_size = bpp / 8;
+	int pos;
+
+	/*
+	 * Subtile remapping for F tile. Note that map[a]==b implies map[b]==a
+	 * so we can use the same table to tile and until.
+	 */
+	static const u8 f_subtile_map[] = {
+		 0,  1,  2,  3,  8,  9, 10, 11,
+		 4,  5,  6,  7, 12, 13, 14, 15,
+		16, 17, 18, 19, 24, 25, 26, 27,
+		20, 21, 22, 23, 28, 29, 30, 31,
+		32, 33, 34, 35, 40, 41, 42, 43,
+		36, 37, 38, 39, 44, 45, 46, 47,
+		48, 49, 50, 51, 56, 57, 58, 59,
+		52, 53, 54, 55, 60, 61, 62, 63
+	};
+
+	x *= pixel_size;
+	/*
+	 * Where does the 4k tile start (in bytes)?  This is the same for Y and
+	 * F so we can use the Y-tile algorithm to get to that point.
+	 */
+	tile_base =
+		y / F_TILE_HEIGHT * stride * F_TILE_HEIGHT +
+		x / F_TILE_WIDTH * 4096;
+
+	/* Find pixel within tile */
+	tile_x = x % F_TILE_WIDTH;
+	tile_y = y % F_TILE_HEIGHT;
+
+	/* And figure out the subtile within the 4k tile */
+	subtile = tile_y / F_SUBTILE_HEIGHT * 8 + tile_x / F_SUBTILE_WIDTH;
+
+	/* Swizzle the subtile number according to the bspec diagram */
+	swizzle = f_subtile_map[subtile];
+
+	/* Calculate new position */
+	pos = tile_base +
+		swizzle * F_SUBTILE_SIZE +
+		tile_y % F_SUBTILE_HEIGHT * OW_SIZE +
+		tile_x % F_SUBTILE_WIDTH;
+
+	GEM_BUG_ON(!IS_ALIGNED(pos, pixel_size));
+
+	return pos / pixel_size * 4;
+}
+
+enum client_tiling {
+	CLIENT_TILING_LINEAR,
+	CLIENT_TILING_X,
+	CLIENT_TILING_Y,
+	CLIENT_TILING_4,
+	CLIENT_NUM_TILING_TYPES
+};
+
+#define WIDTH 512
+#define HEIGHT 32
+
+struct blit_buffer {
+	struct i915_vma *vma;
+	u32 start_val;
+	enum client_tiling tiling;
+};
+
+struct tiled_blits {
+	struct intel_context *ce;
+	struct blit_buffer buffers[3];
+	struct blit_buffer scratch;
+	struct i915_vma *batch;
+	u64 hole;
+	u64 align;
+	u32 width;
+	u32 height;
+};
+
+static bool supports_x_tiling(const struct drm_i915_private *i915)
+{
+	int gen = GRAPHICS_VER(i915);
+
+	if (gen < 12)
+		return true;
+
+	if (!HAS_LMEM(i915) || IS_DG1(i915))
+		return false;
+
+	return true;
+}
+
+static bool fast_blit_ok(const struct blit_buffer *buf)
+{
+	int gen = GRAPHICS_VER(buf->vma->vm->i915);
+
+	if (gen < 9)
+		return false;
+
+	if (gen < 12)
+		return true;
+
+	/* filter out platforms with unsupported X-tile support in fastblit */
+	if (buf->tiling == CLIENT_TILING_X && !supports_x_tiling(buf->vma->vm->i915))
+		return false;
+
+	return true;
+}
+
+static int prepare_blit(const struct tiled_blits *t,
+			struct blit_buffer *dst,
+			struct blit_buffer *src,
+			struct drm_i915_gem_object *batch)
+{
+	const int ver = GRAPHICS_VER(to_i915(batch->base.dev));
+	bool use_64b_reloc = ver >= 8;
+	u32 src_pitch, dst_pitch;
+	u32 cmd, *cs;
+
+	cs = i915_gem_object_pin_map_unlocked(batch, I915_MAP_WC);
+	if (IS_ERR(cs))
+		return PTR_ERR(cs);
+
+	if (fast_blit_ok(dst) && fast_blit_ok(src)) {
+		struct intel_gt *gt = t->ce->engine->gt;
+		u32 src_tiles = 0, dst_tiles = 0;
+		u32 src_4t = 0, dst_4t = 0;
+
+		/* Need to program BLIT_CCTL if it is not done previously
+		 * before using XY_FAST_COPY_BLT
+		 */
+		*cs++ = MI_LOAD_REGISTER_IMM(1);
+		*cs++ = i915_mmio_reg_offset(BLIT_CCTL(t->ce->engine->mmio_base));
+		*cs++ = (BLIT_CCTL_SRC_MOCS(gt->mocs.uc_index) |
+			 BLIT_CCTL_DST_MOCS(gt->mocs.uc_index));
+
+		src_pitch = t->width; /* in dwords */
+		if (src->tiling == CLIENT_TILING_4) {
+			src_tiles = XY_FAST_COPY_BLT_D0_SRC_TILE_MODE(YMAJOR);
+			src_4t = XY_FAST_COPY_BLT_D1_SRC_TILE4;
+		} else if (src->tiling == CLIENT_TILING_Y) {
+			src_tiles = XY_FAST_COPY_BLT_D0_SRC_TILE_MODE(YMAJOR);
+		} else if (src->tiling == CLIENT_TILING_X) {
+			src_tiles = XY_FAST_COPY_BLT_D0_SRC_TILE_MODE(TILE_X);
+		} else {
+			src_pitch *= 4; /* in bytes */
+		}
+
+		dst_pitch = t->width; /* in dwords */
+		if (dst->tiling == CLIENT_TILING_4) {
+			dst_tiles = XY_FAST_COPY_BLT_D0_DST_TILE_MODE(YMAJOR);
+			dst_4t = XY_FAST_COPY_BLT_D1_DST_TILE4;
+		} else if (dst->tiling == CLIENT_TILING_Y) {
+			dst_tiles = XY_FAST_COPY_BLT_D0_DST_TILE_MODE(YMAJOR);
+		} else if (dst->tiling == CLIENT_TILING_X) {
+			dst_tiles = XY_FAST_COPY_BLT_D0_DST_TILE_MODE(TILE_X);
+		} else {
+			dst_pitch *= 4; /* in bytes */
+		}
+
+		*cs++ = GEN9_XY_FAST_COPY_BLT_CMD | (10 - 2) |
+			src_tiles | dst_tiles;
+		*cs++ = src_4t | dst_4t | BLT_DEPTH_32 | dst_pitch;
+		*cs++ = 0;
+		*cs++ = t->height << 16 | t->width;
+		*cs++ = lower_32_bits(dst->vma->node.start);
+		*cs++ = upper_32_bits(dst->vma->node.start);
+		*cs++ = 0;
+		*cs++ = src_pitch;
+		*cs++ = lower_32_bits(src->vma->node.start);
+		*cs++ = upper_32_bits(src->vma->node.start);
+	} else {
+		if (ver >= 6) {
+			*cs++ = MI_LOAD_REGISTER_IMM(1);
+			*cs++ = i915_mmio_reg_offset(BCS_SWCTRL);
+			cmd = (BCS_SRC_Y | BCS_DST_Y) << 16;
+			if (src->tiling == CLIENT_TILING_Y)
+				cmd |= BCS_SRC_Y;
+			if (dst->tiling == CLIENT_TILING_Y)
+				cmd |= BCS_DST_Y;
+			*cs++ = cmd;
+
+			cmd = MI_FLUSH_DW;
+			if (ver >= 8)
+				cmd++;
+			*cs++ = cmd;
+			*cs++ = 0;
+			*cs++ = 0;
+			*cs++ = 0;
+		}
+
+		cmd = XY_SRC_COPY_BLT_CMD | BLT_WRITE_RGBA | (8 - 2);
+		if (ver >= 8)
+			cmd += 2;
+
+		src_pitch = t->width * 4;
+		if (src->tiling) {
+			cmd |= XY_SRC_COPY_BLT_SRC_TILED;
+			src_pitch /= 4;
+		}
+
+		dst_pitch = t->width * 4;
+		if (dst->tiling) {
+			cmd |= XY_SRC_COPY_BLT_DST_TILED;
+			dst_pitch /= 4;
+		}
+
+		*cs++ = cmd;
+		*cs++ = BLT_DEPTH_32 | BLT_ROP_SRC_COPY | dst_pitch;
+		*cs++ = 0;
+		*cs++ = t->height << 16 | t->width;
+		*cs++ = lower_32_bits(dst->vma->node.start);
+		if (use_64b_reloc)
+			*cs++ = upper_32_bits(dst->vma->node.start);
+		*cs++ = 0;
+		*cs++ = src_pitch;
+		*cs++ = lower_32_bits(src->vma->node.start);
+		if (use_64b_reloc)
+			*cs++ = upper_32_bits(src->vma->node.start);
+	}
+
+	*cs++ = MI_BATCH_BUFFER_END;
+
+	i915_gem_object_flush_map(batch);
+	i915_gem_object_unpin_map(batch);
+
+	return 0;
+}
+
+static void tiled_blits_destroy_buffers(struct tiled_blits *t)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(t->buffers); i++)
+		i915_vma_put(t->buffers[i].vma);
+
+	i915_vma_put(t->scratch.vma);
+	i915_vma_put(t->batch);
+}
+
+static struct i915_vma *
+__create_vma(struct tiled_blits *t, size_t size, bool lmem)
+{
+	struct drm_i915_private *i915 = t->ce->vm->i915;
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+
+	if (lmem)
+		obj = i915_gem_object_create_lmem(i915, size, 0);
+	else
+		obj = i915_gem_object_create_shmem(i915, size);
+	if (IS_ERR(obj))
+		return ERR_CAST(obj);
+
+	vma = i915_vma_instance(obj, t->ce->vm, NULL);
+	if (IS_ERR(vma))
+		i915_gem_object_put(obj);
+
+	return vma;
+}
+
+static struct i915_vma *create_vma(struct tiled_blits *t, bool lmem)
+{
+	return __create_vma(t, PAGE_ALIGN(t->width * t->height * 4), lmem);
+}
+
+static int tiled_blits_create_buffers(struct tiled_blits *t,
+				      int width, int height,
+				      struct rnd_state *prng)
+{
+	struct drm_i915_private *i915 = t->ce->engine->i915;
+	int i;
+
+	t->width = width;
+	t->height = height;
+
+	t->batch = __create_vma(t, PAGE_SIZE, false);
+	if (IS_ERR(t->batch))
+		return PTR_ERR(t->batch);
+
+	t->scratch.vma = create_vma(t, false);
+	if (IS_ERR(t->scratch.vma)) {
+		i915_vma_put(t->batch);
+		return PTR_ERR(t->scratch.vma);
+	}
+
+	for (i = 0; i < ARRAY_SIZE(t->buffers); i++) {
+		struct i915_vma *vma;
+
+		vma = create_vma(t, HAS_LMEM(i915) && i % 2);
+		if (IS_ERR(vma)) {
+			tiled_blits_destroy_buffers(t);
+			return PTR_ERR(vma);
+		}
+
+		t->buffers[i].vma = vma;
+		t->buffers[i].tiling =
+			i915_prandom_u32_max_state(CLIENT_NUM_TILING_TYPES, prng);
+
+		/* Platforms support either TileY or Tile4, not both */
+		if (HAS_4TILE(i915) && t->buffers[i].tiling == CLIENT_TILING_Y)
+			t->buffers[i].tiling = CLIENT_TILING_4;
+		else if (!HAS_4TILE(i915) && t->buffers[i].tiling == CLIENT_TILING_4)
+			t->buffers[i].tiling = CLIENT_TILING_Y;
+	}
+
+	return 0;
+}
+
+static void fill_scratch(struct tiled_blits *t, u32 *vaddr, u32 val)
+{
+	int i;
+
+	t->scratch.start_val = val;
+	for (i = 0; i < t->width * t->height; i++)
+		vaddr[i] = val++;
+
+	i915_gem_object_flush_map(t->scratch.vma->obj);
+}
+
+static u64 swizzle_bit(unsigned int bit, u64 offset)
+{
+	return (offset & BIT_ULL(bit)) >> (bit - 6);
+}
+
+static u64 tiled_offset(const struct intel_gt *gt,
+			u64 v,
+			unsigned int stride,
+			enum client_tiling tiling,
+			int x_pos, int y_pos)
+{
+	unsigned int swizzle;
+	u64 x, y;
+
+	if (tiling == CLIENT_TILING_LINEAR)
+		return v;
+
+	y = div64_u64_rem(v, stride, &x);
+
+	if (tiling == CLIENT_TILING_4) {
+		v = linear_x_y_to_ftiled_pos(x_pos, y_pos, stride, 32);
+
+		/* no swizzling for f-tiling */
+		swizzle = I915_BIT_6_SWIZZLE_NONE;
+	} else if (tiling == CLIENT_TILING_X) {
+		v = div64_u64_rem(y, 8, &y) * stride * 8;
+		v += y * 512;
+		v += div64_u64_rem(x, 512, &x) << 12;
+		v += x;
+
+		swizzle = gt->ggtt->bit_6_swizzle_x;
+	} else {
+		const unsigned int ytile_span = 16;
+		const unsigned int ytile_height = 512;
+
+		v = div64_u64_rem(y, 32, &y) * stride * 32;
+		v += y * ytile_span;
+		v += div64_u64_rem(x, ytile_span, &x) * ytile_height;
+		v += x;
+
+		swizzle = gt->ggtt->bit_6_swizzle_y;
+	}
+
+	switch (swizzle) {
+	case I915_BIT_6_SWIZZLE_9:
+		v ^= swizzle_bit(9, v);
+		break;
+	case I915_BIT_6_SWIZZLE_9_10:
+		v ^= swizzle_bit(9, v) ^ swizzle_bit(10, v);
+		break;
+	case I915_BIT_6_SWIZZLE_9_11:
+		v ^= swizzle_bit(9, v) ^ swizzle_bit(11, v);
+		break;
+	case I915_BIT_6_SWIZZLE_9_10_11:
+		v ^= swizzle_bit(9, v) ^ swizzle_bit(10, v) ^ swizzle_bit(11, v);
+		break;
+	}
+
+	return v;
+}
+
+static const char *repr_tiling(enum client_tiling tiling)
+{
+	switch (tiling) {
+	case CLIENT_TILING_LINEAR: return "linear";
+	case CLIENT_TILING_X: return "X";
+	case CLIENT_TILING_Y: return "Y";
+	case CLIENT_TILING_4: return "F";
+	default: return "unknown";
+	}
+}
+
+static int verify_buffer(const struct tiled_blits *t,
+			 struct blit_buffer *buf,
+			 struct rnd_state *prng)
+{
+	const u32 *vaddr;
+	int ret = 0;
+	int x, y, p;
+
+	x = i915_prandom_u32_max_state(t->width, prng);
+	y = i915_prandom_u32_max_state(t->height, prng);
+	p = y * t->width + x;
+
+	vaddr = i915_gem_object_pin_map_unlocked(buf->vma->obj, I915_MAP_WC);
+	if (IS_ERR(vaddr))
+		return PTR_ERR(vaddr);
+
+	if (vaddr[0] != buf->start_val) {
+		ret = -EINVAL;
+	} else {
+		u64 v = tiled_offset(buf->vma->vm->gt,
+				     p * 4, t->width * 4,
+				     buf->tiling, x, y);
+
+		if (vaddr[v / sizeof(*vaddr)] != buf->start_val + p)
+			ret = -EINVAL;
+	}
+	if (ret) {
+		pr_err("Invalid %s tiling detected at (%d, %d), start_val %x\n",
+		       repr_tiling(buf->tiling),
+		       x, y, buf->start_val);
+		igt_hexdump(vaddr, 4096);
+	}
+
+	i915_gem_object_unpin_map(buf->vma->obj);
+	return ret;
+}
+
+static int pin_buffer(struct i915_vma *vma, u64 addr)
+{
+	int err;
+
+	if (drm_mm_node_allocated(&vma->node) && vma->node.start != addr) {
+		err = i915_vma_unbind_unlocked(vma);
+		if (err)
+			return err;
+	}
+
+	err = i915_vma_pin(vma, 0, 0, PIN_USER | PIN_OFFSET_FIXED | addr);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int
+tiled_blit(struct tiled_blits *t,
+	   struct blit_buffer *dst, u64 dst_addr,
+	   struct blit_buffer *src, u64 src_addr)
+{
+	struct i915_request *rq;
+	int err;
+
+	err = pin_buffer(src->vma, src_addr);
+	if (err) {
+		pr_err("Cannot pin src @ %llx\n", src_addr);
+		return err;
+	}
+
+	err = pin_buffer(dst->vma, dst_addr);
+	if (err) {
+		pr_err("Cannot pin dst @ %llx\n", dst_addr);
+		goto err_src;
+	}
+
+	err = i915_vma_pin(t->batch, 0, 0, PIN_USER | PIN_HIGH);
+	if (err) {
+		pr_err("cannot pin batch\n");
+		goto err_dst;
+	}
+
+	err = prepare_blit(t, dst, src, t->batch->obj);
+	if (err)
+		goto err_bb;
+
+	rq = intel_context_create_request(t->ce);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		goto err_bb;
+	}
+
+	err = igt_vma_move_to_active_unlocked(t->batch, rq, 0);
+	if (!err)
+		err = igt_vma_move_to_active_unlocked(src->vma, rq, 0);
+	if (!err)
+		err = igt_vma_move_to_active_unlocked(dst->vma, rq, 0);
+	if (!err)
+		err = rq->engine->emit_bb_start(rq,
+						t->batch->node.start,
+						t->batch->node.size,
+						0);
+	i915_request_get(rq);
+	i915_request_add(rq);
+	if (i915_request_wait(rq, 0, HZ / 2) < 0)
+		err = -ETIME;
+	i915_request_put(rq);
+
+	dst->start_val = src->start_val;
+err_bb:
+	i915_vma_unpin(t->batch);
+err_dst:
+	i915_vma_unpin(dst->vma);
+err_src:
+	i915_vma_unpin(src->vma);
+	return err;
+}
+
+static struct tiled_blits *
+tiled_blits_create(struct intel_engine_cs *engine, struct rnd_state *prng)
+{
+	struct drm_mm_node hole;
+	struct tiled_blits *t;
+	u64 hole_size;
+	int err;
+
+	t = kzalloc(sizeof(*t), GFP_KERNEL);
+	if (!t)
+		return ERR_PTR(-ENOMEM);
+
+	t->ce = intel_context_create(engine);
+	if (IS_ERR(t->ce)) {
+		err = PTR_ERR(t->ce);
+		goto err_free;
+	}
+
+	t->align = i915_vm_min_alignment(t->ce->vm, INTEL_MEMORY_LOCAL);
+	t->align = max(t->align,
+		       i915_vm_min_alignment(t->ce->vm, INTEL_MEMORY_SYSTEM));
+
+	hole_size = 2 * round_up(WIDTH * HEIGHT * 4, t->align);
+	hole_size *= 2; /* room to maneuver */
+	hole_size += 2 * t->align; /* padding on either side */
+
+	mutex_lock(&t->ce->vm->mutex);
+	memset(&hole, 0, sizeof(hole));
+	err = drm_mm_insert_node_in_range(&t->ce->vm->mm, &hole,
+					  hole_size, t->align,
+					  I915_COLOR_UNEVICTABLE,
+					  0, U64_MAX,
+					  DRM_MM_INSERT_BEST);
+	if (!err)
+		drm_mm_remove_node(&hole);
+	mutex_unlock(&t->ce->vm->mutex);
+	if (err) {
+		err = -ENODEV;
+		goto err_put;
+	}
+
+	t->hole = hole.start + t->align;
+	pr_info("Using hole at %llx\n", t->hole);
+
+	err = tiled_blits_create_buffers(t, WIDTH, HEIGHT, prng);
+	if (err)
+		goto err_put;
+
+	return t;
+
+err_put:
+	intel_context_put(t->ce);
+err_free:
+	kfree(t);
+	return ERR_PTR(err);
+}
+
+static void tiled_blits_destroy(struct tiled_blits *t)
+{
+	tiled_blits_destroy_buffers(t);
+
+	intel_context_put(t->ce);
+	kfree(t);
+}
+
+static int tiled_blits_prepare(struct tiled_blits *t,
+			       struct rnd_state *prng)
+{
+	u64 offset = round_up(t->width * t->height * 4, t->align);
+	u32 *map;
+	int err;
+	int i;
+
+	map = i915_gem_object_pin_map_unlocked(t->scratch.vma->obj, I915_MAP_WC);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+
+	/* Use scratch to fill objects */
+	for (i = 0; i < ARRAY_SIZE(t->buffers); i++) {
+		fill_scratch(t, map, prandom_u32_state(prng));
+		GEM_BUG_ON(verify_buffer(t, &t->scratch, prng));
+
+		err = tiled_blit(t,
+				 &t->buffers[i], t->hole + offset,
+				 &t->scratch, t->hole);
+		if (err == 0)
+			err = verify_buffer(t, &t->buffers[i], prng);
+		if (err) {
+			pr_err("Failed to create buffer %d\n", i);
+			break;
+		}
+	}
+
+	i915_gem_object_unpin_map(t->scratch.vma->obj);
+	return err;
+}
+
+static int tiled_blits_bounce(struct tiled_blits *t, struct rnd_state *prng)
+{
+	u64 offset = round_up(t->width * t->height * 4, 2 * t->align);
+	int err;
+
+	/* We want to check position invariant tiling across GTT eviction */
+
+	err = tiled_blit(t,
+			 &t->buffers[1], t->hole + offset / 2,
+			 &t->buffers[0], t->hole + 2 * offset);
+	if (err)
+		return err;
+
+	/* Simulating GTT eviction of the same buffer / layout */
+	t->buffers[2].tiling = t->buffers[0].tiling;
+
+	/* Reposition so that we overlap the old addresses, and slightly off */
+	err = tiled_blit(t,
+			 &t->buffers[2], t->hole + t->align,
+			 &t->buffers[1], t->hole + 3 * offset / 2);
+	if (err)
+		return err;
+
+	err = verify_buffer(t, &t->buffers[2], prng);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int __igt_client_tiled_blits(struct intel_engine_cs *engine,
+				    struct rnd_state *prng)
+{
+	struct tiled_blits *t;
+	int err;
+
+	t = tiled_blits_create(engine, prng);
+	if (IS_ERR(t))
+		return PTR_ERR(t);
+
+	err = tiled_blits_prepare(t, prng);
+	if (err)
+		goto out;
+
+	err = tiled_blits_bounce(t, prng);
+	if (err)
+		goto out;
+
+out:
+	tiled_blits_destroy(t);
+	return err;
+}
+
+static bool has_bit17_swizzle(int sw)
+{
+	return (sw == I915_BIT_6_SWIZZLE_9_10_17 ||
+		sw == I915_BIT_6_SWIZZLE_9_17);
+}
+
+static bool bad_swizzling(struct drm_i915_private *i915)
+{
+	struct i915_ggtt *ggtt = to_gt(i915)->ggtt;
+
+	if (i915->gem_quirks & GEM_QUIRK_PIN_SWIZZLED_PAGES)
+		return true;
+
+	if (has_bit17_swizzle(ggtt->bit_6_swizzle_x) ||
+	    has_bit17_swizzle(ggtt->bit_6_swizzle_y))
+		return true;
+
+	return false;
+}
+
+static int igt_client_tiled_blits(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	I915_RND_STATE(prng);
+	int inst = 0;
+
+	/* Test requires explicit BLT tiling controls */
+	if (GRAPHICS_VER(i915) < 4)
+		return 0;
+
+	if (bad_swizzling(i915)) /* Requires sane (sub-page) swizzling */
+		return 0;
+
+	do {
+		struct intel_engine_cs *engine;
+		int err;
+
+		engine = intel_engine_lookup_user(i915,
+						  I915_ENGINE_CLASS_COPY,
+						  inst++);
+		if (!engine)
+			return 0;
+
+		err = __igt_client_tiled_blits(engine, &prng);
+		if (err == -ENODEV)
+			err = 0;
+		if (err)
+			return err;
+	} while (1);
+}
+
+int i915_gem_client_blt_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_client_tiled_blits),
+	};
+
+	if (intel_gt_is_wedged(to_gt(i915)))
+		return 0;
+
+	return i915_live_subtests(tests, i915);
+}