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, 514 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
new file mode 100644
index 000000000..30c28a69e
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
@@ -0,0 +1,514 @@
+/*
+ * Copyright 2008 Advanced Micro Devices, Inc.
+ * Copyright 2008 Red Hat Inc.
+ * Copyright 2009 Jerome Glisse.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Dave Airlie
+ *          Alex Deucher
+ *          Jerome Glisse
+ */
+
+#include "amdgpu.h"
+#include "atom.h"
+
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/acpi.h>
+/*
+ * BIOS.
+ */
+
+#define AMD_VBIOS_SIGNATURE " 761295520"
+#define AMD_VBIOS_SIGNATURE_OFFSET 0x30
+#define AMD_VBIOS_SIGNATURE_SIZE sizeof(AMD_VBIOS_SIGNATURE)
+#define AMD_VBIOS_SIGNATURE_END (AMD_VBIOS_SIGNATURE_OFFSET + AMD_VBIOS_SIGNATURE_SIZE)
+#define AMD_IS_VALID_VBIOS(p) ((p)[0] == 0x55 && (p)[1] == 0xAA)
+#define AMD_VBIOS_LENGTH(p) ((p)[2] << 9)
+
+/* Check if current bios is an ATOM BIOS.
+ * Return true if it is ATOM BIOS. Otherwise, return false.
+ */
+static bool check_atom_bios(uint8_t *bios, size_t size)
+{
+	uint16_t tmp, bios_header_start;
+
+	if (!bios || size < 0x49) {
+		DRM_INFO("vbios mem is null or mem size is wrong\n");
+		return false;
+	}
+
+	if (!AMD_IS_VALID_VBIOS(bios)) {
+		DRM_INFO("BIOS signature incorrect %x %x\n", bios[0], bios[1]);
+		return false;
+	}
+
+	bios_header_start = bios[0x48] | (bios[0x49] << 8);
+	if (!bios_header_start) {
+		DRM_INFO("Can't locate bios header\n");
+		return false;
+	}
+
+	tmp = bios_header_start + 4;
+	if (size < tmp) {
+		DRM_INFO("BIOS header is broken\n");
+		return false;
+	}
+
+	if (!memcmp(bios + tmp, "ATOM", 4) ||
+	    !memcmp(bios + tmp, "MOTA", 4)) {
+		DRM_DEBUG("ATOMBIOS detected\n");
+		return true;
+	}
+
+	return false;
+}
+
+/* If you boot an IGP board with a discrete card as the primary,
+ * the IGP rom is not accessible via the rom bar as the IGP rom is
+ * part of the system bios.  On boot, the system bios puts a
+ * copy of the igp rom at the start of vram if a discrete card is
+ * present.
+ */
+static bool igp_read_bios_from_vram(struct amdgpu_device *adev)
+{
+	uint8_t __iomem *bios;
+	resource_size_t vram_base;
+	resource_size_t size = 256 * 1024; /* ??? */
+
+	if (!(adev->flags & AMD_IS_APU))
+		if (amdgpu_device_need_post(adev))
+			return false;
+
+	/* FB BAR not enabled */
+	if (pci_resource_len(adev->pdev, 0) == 0)
+		return false;
+
+	adev->bios = NULL;
+	vram_base = pci_resource_start(adev->pdev, 0);
+	bios = ioremap_wc(vram_base, size);
+	if (!bios) {
+		return false;
+	}
+
+	adev->bios = kmalloc(size, GFP_KERNEL);
+	if (!adev->bios) {
+		iounmap(bios);
+		return false;
+	}
+	adev->bios_size = size;
+	memcpy_fromio(adev->bios, bios, size);
+	iounmap(bios);
+
+	if (!check_atom_bios(adev->bios, size)) {
+		kfree(adev->bios);
+		return false;
+	}
+
+	return true;
+}
+
+bool amdgpu_read_bios(struct amdgpu_device *adev)
+{
+	uint8_t __iomem *bios;
+	size_t size;
+
+	adev->bios = NULL;
+	/* XXX: some cards may return 0 for rom size? ddx has a workaround */
+	bios = pci_map_rom(adev->pdev, &size);
+	if (!bios) {
+		return false;
+	}
+
+	adev->bios = kzalloc(size, GFP_KERNEL);
+	if (adev->bios == NULL) {
+		pci_unmap_rom(adev->pdev, bios);
+		return false;
+	}
+	adev->bios_size = size;
+	memcpy_fromio(adev->bios, bios, size);
+	pci_unmap_rom(adev->pdev, bios);
+
+	if (!check_atom_bios(adev->bios, size)) {
+		kfree(adev->bios);
+		return false;
+	}
+
+	return true;
+}
+
+static bool amdgpu_read_bios_from_rom(struct amdgpu_device *adev)
+{
+	u8 header[AMD_VBIOS_SIGNATURE_END+1] = {0};
+	int len;
+
+	if (!adev->asic_funcs || !adev->asic_funcs->read_bios_from_rom)
+		return false;
+
+	/* validate VBIOS signature */
+	if (amdgpu_asic_read_bios_from_rom(adev, &header[0], sizeof(header)) == false)
+		return false;
+	header[AMD_VBIOS_SIGNATURE_END] = 0;
+
+	if ((!AMD_IS_VALID_VBIOS(header)) ||
+	    0 != memcmp((char *)&header[AMD_VBIOS_SIGNATURE_OFFSET],
+			AMD_VBIOS_SIGNATURE,
+			strlen(AMD_VBIOS_SIGNATURE)))
+		return false;
+
+	/* valid vbios, go on */
+	len = AMD_VBIOS_LENGTH(header);
+	len = ALIGN(len, 4);
+	adev->bios = kmalloc(len, GFP_KERNEL);
+	if (!adev->bios) {
+		DRM_ERROR("no memory to allocate for BIOS\n");
+		return false;
+	}
+	adev->bios_size = len;
+
+	/* read complete BIOS */
+	amdgpu_asic_read_bios_from_rom(adev, adev->bios, len);
+
+	if (!check_atom_bios(adev->bios, len)) {
+		kfree(adev->bios);
+		return false;
+	}
+
+	return true;
+}
+
+static bool amdgpu_read_platform_bios(struct amdgpu_device *adev)
+{
+	phys_addr_t rom = adev->pdev->rom;
+	size_t romlen = adev->pdev->romlen;
+	void __iomem *bios;
+
+	adev->bios = NULL;
+
+	if (!rom || romlen == 0)
+		return false;
+
+	adev->bios = kzalloc(romlen, GFP_KERNEL);
+	if (!adev->bios)
+		return false;
+
+	bios = ioremap(rom, romlen);
+	if (!bios)
+		goto free_bios;
+
+	memcpy_fromio(adev->bios, bios, romlen);
+	iounmap(bios);
+
+	if (!check_atom_bios(adev->bios, romlen))
+		goto free_bios;
+
+	adev->bios_size = romlen;
+
+	return true;
+free_bios:
+	kfree(adev->bios);
+	return false;
+}
+
+#ifdef CONFIG_ACPI
+/* ATRM is used to get the BIOS on the discrete cards in
+ * dual-gpu systems.
+ */
+/* retrieve the ROM in 4k blocks */
+#define ATRM_BIOS_PAGE 4096
+/**
+ * amdgpu_atrm_call - fetch a chunk of the vbios
+ *
+ * @atrm_handle: acpi ATRM handle
+ * @bios: vbios image pointer
+ * @offset: offset of vbios image data to fetch
+ * @len: length of vbios image data to fetch
+ *
+ * Executes ATRM to fetch a chunk of the discrete
+ * vbios image on PX systems (all asics).
+ * Returns the length of the buffer fetched.
+ */
+static int amdgpu_atrm_call(acpi_handle atrm_handle, uint8_t *bios,
+			    int offset, int len)
+{
+	acpi_status status;
+	union acpi_object atrm_arg_elements[2], *obj;
+	struct acpi_object_list atrm_arg;
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
+
+	atrm_arg.count = 2;
+	atrm_arg.pointer = &atrm_arg_elements[0];
+
+	atrm_arg_elements[0].type = ACPI_TYPE_INTEGER;
+	atrm_arg_elements[0].integer.value = offset;
+
+	atrm_arg_elements[1].type = ACPI_TYPE_INTEGER;
+	atrm_arg_elements[1].integer.value = len;
+
+	status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer);
+	if (ACPI_FAILURE(status)) {
+		printk("failed to evaluate ATRM got %s\n", acpi_format_exception(status));
+		return -ENODEV;
+	}
+
+	obj = (union acpi_object *)buffer.pointer;
+	memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length);
+	len = obj->buffer.length;
+	kfree(buffer.pointer);
+	return len;
+}
+
+static bool amdgpu_atrm_get_bios(struct amdgpu_device *adev)
+{
+	int ret;
+	int size = 256 * 1024;
+	int i;
+	struct pci_dev *pdev = NULL;
+	acpi_handle dhandle, atrm_handle;
+	acpi_status status;
+	bool found = false;
+
+	/* ATRM is for the discrete card only */
+	if (adev->flags & AMD_IS_APU)
+		return false;
+
+	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
+		dhandle = ACPI_HANDLE(&pdev->dev);
+		if (!dhandle)
+			continue;
+
+		status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
+		if (ACPI_SUCCESS(status)) {
+			found = true;
+			break;
+		}
+	}
+
+	if (!found) {
+		while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) {
+			dhandle = ACPI_HANDLE(&pdev->dev);
+			if (!dhandle)
+				continue;
+
+			status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
+			if (ACPI_SUCCESS(status)) {
+				found = true;
+				break;
+			}
+		}
+	}
+
+	if (!found)
+		return false;
+	pci_dev_put(pdev);
+
+	adev->bios = kmalloc(size, GFP_KERNEL);
+	if (!adev->bios) {
+		dev_err(adev->dev, "Unable to allocate bios\n");
+		return false;
+	}
+
+	for (i = 0; i < size / ATRM_BIOS_PAGE; i++) {
+		ret = amdgpu_atrm_call(atrm_handle,
+				       adev->bios,
+				       (i * ATRM_BIOS_PAGE),
+				       ATRM_BIOS_PAGE);
+		if (ret < ATRM_BIOS_PAGE)
+			break;
+	}
+
+	if (!check_atom_bios(adev->bios, size)) {
+		kfree(adev->bios);
+		return false;
+	}
+	adev->bios_size = size;
+	return true;
+}
+#else
+static inline bool amdgpu_atrm_get_bios(struct amdgpu_device *adev)
+{
+	return false;
+}
+#endif
+
+static bool amdgpu_read_disabled_bios(struct amdgpu_device *adev)
+{
+	if (adev->flags & AMD_IS_APU)
+		return igp_read_bios_from_vram(adev);
+	else
+		return (!adev->asic_funcs || !adev->asic_funcs->read_disabled_bios) ?
+			false : amdgpu_asic_read_disabled_bios(adev);
+}
+
+#ifdef CONFIG_ACPI
+static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev)
+{
+	struct acpi_table_header *hdr;
+	acpi_size tbl_size;
+	UEFI_ACPI_VFCT *vfct;
+	unsigned offset;
+
+	if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr)))
+		return false;
+	tbl_size = hdr->length;
+	if (tbl_size < sizeof(UEFI_ACPI_VFCT)) {
+		dev_info(adev->dev, "ACPI VFCT table present but broken (too short #1),skipping\n");
+		return false;
+	}
+
+	vfct = (UEFI_ACPI_VFCT *)hdr;
+	offset = vfct->VBIOSImageOffset;
+
+	while (offset < tbl_size) {
+		GOP_VBIOS_CONTENT *vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + offset);
+		VFCT_IMAGE_HEADER *vhdr = &vbios->VbiosHeader;
+
+		offset += sizeof(VFCT_IMAGE_HEADER);
+		if (offset > tbl_size) {
+			dev_info(adev->dev, "ACPI VFCT image header truncated,skipping\n");
+			return false;
+		}
+
+		offset += vhdr->ImageLength;
+		if (offset > tbl_size) {
+			dev_info(adev->dev, "ACPI VFCT image truncated,skipping\n");
+			return false;
+		}
+
+		if (vhdr->ImageLength &&
+		    vhdr->PCIBus == adev->pdev->bus->number &&
+		    vhdr->PCIDevice == PCI_SLOT(adev->pdev->devfn) &&
+		    vhdr->PCIFunction == PCI_FUNC(adev->pdev->devfn) &&
+		    vhdr->VendorID == adev->pdev->vendor &&
+		    vhdr->DeviceID == adev->pdev->device) {
+			adev->bios = kmemdup(&vbios->VbiosContent,
+					     vhdr->ImageLength,
+					     GFP_KERNEL);
+
+			if (!check_atom_bios(adev->bios, vhdr->ImageLength)) {
+				kfree(adev->bios);
+				return false;
+			}
+			adev->bios_size = vhdr->ImageLength;
+			return true;
+		}
+	}
+
+	dev_info(adev->dev, "ACPI VFCT table present but broken (too short #2),skipping\n");
+	return false;
+}
+#else
+static inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev)
+{
+	return false;
+}
+#endif
+
+bool amdgpu_get_bios(struct amdgpu_device *adev)
+{
+	if (amdgpu_atrm_get_bios(adev)) {
+		dev_info(adev->dev, "Fetched VBIOS from ATRM\n");
+		goto success;
+	}
+
+	if (amdgpu_acpi_vfct_bios(adev)) {
+		dev_info(adev->dev, "Fetched VBIOS from VFCT\n");
+		goto success;
+	}
+
+	if (igp_read_bios_from_vram(adev)) {
+		dev_info(adev->dev, "Fetched VBIOS from VRAM BAR\n");
+		goto success;
+	}
+
+	if (amdgpu_read_bios(adev)) {
+		dev_info(adev->dev, "Fetched VBIOS from ROM BAR\n");
+		goto success;
+	}
+
+	if (amdgpu_read_bios_from_rom(adev)) {
+		dev_info(adev->dev, "Fetched VBIOS from ROM\n");
+		goto success;
+	}
+
+	if (amdgpu_read_disabled_bios(adev)) {
+		dev_info(adev->dev, "Fetched VBIOS from disabled ROM BAR\n");
+		goto success;
+	}
+
+	if (amdgpu_read_platform_bios(adev)) {
+		dev_info(adev->dev, "Fetched VBIOS from platform\n");
+		goto success;
+	}
+
+	dev_err(adev->dev, "Unable to locate a BIOS ROM\n");
+	return false;
+
+success:
+	adev->is_atom_fw = (adev->asic_type >= CHIP_VEGA10) ? true : false;
+	return true;
+}
+
+/* helper function for soc15 and onwards to read bios from rom */
+bool amdgpu_soc15_read_bios_from_rom(struct amdgpu_device *adev,
+				     u8 *bios, u32 length_bytes)
+{
+	u32 *dw_ptr;
+	u32 i, length_dw;
+	u32 rom_offset;
+	u32 rom_index_offset;
+	u32 rom_data_offset;
+
+	if (bios == NULL)
+		return false;
+	if (length_bytes == 0)
+		return false;
+	/* APU vbios image is part of sbios image */
+	if (adev->flags & AMD_IS_APU)
+		return false;
+	if (!adev->smuio.funcs ||
+	    !adev->smuio.funcs->get_rom_index_offset ||
+	    !adev->smuio.funcs->get_rom_data_offset)
+		return false;
+
+	dw_ptr = (u32 *)bios;
+	length_dw = ALIGN(length_bytes, 4) / 4;
+
+	rom_index_offset =
+		adev->smuio.funcs->get_rom_index_offset(adev);
+	rom_data_offset =
+		adev->smuio.funcs->get_rom_data_offset(adev);
+
+	if (adev->nbio.funcs &&
+	    adev->nbio.funcs->get_rom_offset) {
+		rom_offset = adev->nbio.funcs->get_rom_offset(adev);
+		rom_offset = rom_offset << 17;
+	} else {
+		rom_offset = 0;
+	}
+
+	/* set rom index to rom_offset */
+	WREG32(rom_index_offset, rom_offset);
+	/* read out the rom data */
+	for (i = 0; i < length_dw; i++)
+		dw_ptr[i] = RREG32(rom_data_offset);
+
+	return true;
+}