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, 1045 insertions, 0 deletions

diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c
new file mode 100644
index 000000000..73f036bed
--- /dev/null
+++ b/drivers/scsi/pm8001/pm8001_ctl.c
@@ -0,0 +1,1045 @@
+/*
+ * PMC-Sierra 8001/8081/8088/8089 SAS/SATA based host adapters driver
+ *
+ * Copyright (c) 2008-2009 USI Co., Ltd.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ */
+#include <linux/firmware.h>
+#include <linux/slab.h>
+#include "pm8001_sas.h"
+#include "pm8001_ctl.h"
+#include "pm8001_chips.h"
+
+/* scsi host attributes */
+
+/**
+ * pm8001_ctl_mpi_interface_rev_show - MPI interface revision number
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_mpi_interface_rev_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	if (pm8001_ha->chip_id == chip_8001) {
+		return snprintf(buf, PAGE_SIZE, "%d\n",
+			pm8001_ha->main_cfg_tbl.pm8001_tbl.interface_rev);
+	} else {
+		return snprintf(buf, PAGE_SIZE, "%d\n",
+			pm8001_ha->main_cfg_tbl.pm80xx_tbl.interface_rev);
+	}
+}
+static
+DEVICE_ATTR(interface_rev, S_IRUGO, pm8001_ctl_mpi_interface_rev_show, NULL);
+
+/**
+ * controller_fatal_error_show - check controller is under fatal err
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t controller_fatal_error_show(struct device *cdev,
+		struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	return snprintf(buf, PAGE_SIZE, "%d\n",
+			pm8001_ha->controller_fatal_error);
+}
+static DEVICE_ATTR_RO(controller_fatal_error);
+
+/**
+ * pm8001_ctl_fw_version_show - firmware version
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_fw_version_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	if (pm8001_ha->chip_id == chip_8001) {
+		return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
+		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 24),
+		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 16),
+		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 8),
+		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev));
+	} else {
+		return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 24),
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 16),
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 8),
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev));
+	}
+}
+static DEVICE_ATTR(fw_version, S_IRUGO, pm8001_ctl_fw_version_show, NULL);
+
+/**
+ * pm8001_ctl_ila_version_show - ila version
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_ila_version_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	if (pm8001_ha->chip_id != chip_8001) {
+		return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 24),
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 16),
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 8),
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version));
+	}
+	return 0;
+}
+static DEVICE_ATTR(ila_version, 0444, pm8001_ctl_ila_version_show, NULL);
+
+/**
+ * pm8001_ctl_inactive_fw_version_show - Inactive firmware version number
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_inactive_fw_version_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	if (pm8001_ha->chip_id != chip_8001) {
+		return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 24),
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 16),
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 8),
+		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version));
+	}
+	return 0;
+}
+static
+DEVICE_ATTR(inc_fw_ver, 0444, pm8001_ctl_inactive_fw_version_show, NULL);
+
+/**
+ * pm8001_ctl_max_out_io_show - max outstanding io supported
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_max_out_io_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	if (pm8001_ha->chip_id == chip_8001) {
+		return snprintf(buf, PAGE_SIZE, "%d\n",
+			pm8001_ha->main_cfg_tbl.pm8001_tbl.max_out_io);
+	} else {
+		return snprintf(buf, PAGE_SIZE, "%d\n",
+			pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io);
+	}
+}
+static DEVICE_ATTR(max_out_io, S_IRUGO, pm8001_ctl_max_out_io_show, NULL);
+/**
+ * pm8001_ctl_max_devices_show - max devices support
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_max_devices_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	if (pm8001_ha->chip_id == chip_8001) {
+		return snprintf(buf, PAGE_SIZE, "%04d\n",
+			(u16)(pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl >> 16)
+			);
+	} else {
+		return snprintf(buf, PAGE_SIZE, "%04d\n",
+			(u16)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl >> 16)
+			);
+	}
+}
+static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
+/**
+ * pm8001_ctl_max_sg_list_show - max sg list supported iff not 0.0 for no
+ * hardware limitation
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	if (pm8001_ha->chip_id == chip_8001) {
+		return snprintf(buf, PAGE_SIZE, "%04d\n",
+			pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl & 0x0000FFFF
+			);
+	} else {
+		return snprintf(buf, PAGE_SIZE, "%04d\n",
+			pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl & 0x0000FFFF
+			);
+	}
+}
+static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
+
+#define SAS_1_0 0x1
+#define SAS_1_1 0x2
+#define SAS_2_0 0x4
+
+static ssize_t
+show_sas_spec_support_status(unsigned int mode, char *buf)
+{
+	ssize_t len = 0;
+
+	if (mode & SAS_1_1)
+		len = sprintf(buf, "%s", "SAS1.1");
+	if (mode & SAS_2_0)
+		len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
+	len += sprintf(buf + len, "\n");
+
+	return len;
+}
+
+/**
+ * pm8001_ctl_sas_spec_support_show - sas spec supported
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	unsigned int mode;
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	/* fe000000 means supports SAS2.1 */
+	if (pm8001_ha->chip_id == chip_8001)
+		mode = (pm8001_ha->main_cfg_tbl.pm8001_tbl.ctrl_cap_flag &
+							0xfe000000)>>25;
+	else
+		/* fe000000 means supports SAS2.1 */
+		mode = (pm8001_ha->main_cfg_tbl.pm80xx_tbl.ctrl_cap_flag &
+							0xfe000000)>>25;
+	return show_sas_spec_support_status(mode, buf);
+}
+static DEVICE_ATTR(sas_spec_support, S_IRUGO,
+		   pm8001_ctl_sas_spec_support_show, NULL);
+
+/**
+ * pm8001_ctl_host_sas_address_show - sas address
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * This is the controller sas address
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
+			be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
+}
+static DEVICE_ATTR(host_sas_address, S_IRUGO,
+		   pm8001_ctl_host_sas_address_show, NULL);
+
+/**
+ * pm8001_ctl_logging_level_show - logging level
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t pm8001_ctl_logging_level_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	return snprintf(buf, PAGE_SIZE, "%08xh\n", pm8001_ha->logging_level);
+}
+
+static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
+	struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	int val = 0;
+
+	if (sscanf(buf, "%x", &val) != 1)
+		return -EINVAL;
+
+	pm8001_ha->logging_level = val;
+	return strlen(buf);
+}
+
+static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
+	pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
+/**
+ * pm8001_ctl_aap_log_show - aap1 event log
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	u8 *ptr = (u8 *)pm8001_ha->memoryMap.region[AAP1].virt_ptr;
+	int i;
+
+	char *str = buf;
+	int max = 2;
+	for (i = 0; i < max; i++) {
+		str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
+			       "0x%08x 0x%08x\n",
+			       pm8001_ctl_aap1_memmap(ptr, i, 0),
+			       pm8001_ctl_aap1_memmap(ptr, i, 4),
+			       pm8001_ctl_aap1_memmap(ptr, i, 8),
+			       pm8001_ctl_aap1_memmap(ptr, i, 12),
+			       pm8001_ctl_aap1_memmap(ptr, i, 16),
+			       pm8001_ctl_aap1_memmap(ptr, i, 20),
+			       pm8001_ctl_aap1_memmap(ptr, i, 24),
+			       pm8001_ctl_aap1_memmap(ptr, i, 28));
+	}
+
+	return str - buf;
+}
+static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
+/**
+ * pm8001_ctl_ib_queue_log_show - Out bound Queue log
+ * @cdev:pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_ib_queue_log_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	int offset;
+	char *str = buf;
+	int start = 0;
+	u32 ib_offset = pm8001_ha->ib_offset;
+	u32 queue_size = pm8001_ha->max_q_num * PM8001_MPI_QUEUE * 128;
+#define IB_MEMMAP(c)	\
+		(*(u32 *)((u8 *)pm8001_ha->	\
+		memoryMap.region[ib_offset].virt_ptr +	\
+		pm8001_ha->evtlog_ib_offset + (c)))
+
+	for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
+		str += sprintf(str, "0x%08x\n", IB_MEMMAP(start));
+		start = start + 4;
+	}
+	pm8001_ha->evtlog_ib_offset += SYSFS_OFFSET;
+	if (((pm8001_ha->evtlog_ib_offset) % queue_size) == 0)
+		pm8001_ha->evtlog_ib_offset = 0;
+
+	return str - buf;
+}
+
+static DEVICE_ATTR(ib_log, S_IRUGO, pm8001_ctl_ib_queue_log_show, NULL);
+/**
+ * pm8001_ctl_ob_queue_log_show - Out bound Queue log
+ * @cdev:pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+
+static ssize_t pm8001_ctl_ob_queue_log_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	int offset;
+	char *str = buf;
+	int start = 0;
+	u32 ob_offset = pm8001_ha->ob_offset;
+	u32 queue_size = pm8001_ha->max_q_num * PM8001_MPI_QUEUE * 128;
+#define OB_MEMMAP(c)	\
+		(*(u32 *)((u8 *)pm8001_ha->	\
+		memoryMap.region[ob_offset].virt_ptr +	\
+		pm8001_ha->evtlog_ob_offset + (c)))
+
+	for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
+		str += sprintf(str, "0x%08x\n", OB_MEMMAP(start));
+		start = start + 4;
+	}
+	pm8001_ha->evtlog_ob_offset += SYSFS_OFFSET;
+	if (((pm8001_ha->evtlog_ob_offset) % queue_size) == 0)
+		pm8001_ha->evtlog_ob_offset = 0;
+
+	return str - buf;
+}
+static DEVICE_ATTR(ob_log, S_IRUGO, pm8001_ctl_ob_queue_log_show, NULL);
+/**
+ * pm8001_ctl_bios_version_show - Bios version Display
+ * @cdev:pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf:the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	char *str = buf;
+	int bios_index;
+	DECLARE_COMPLETION_ONSTACK(completion);
+	struct pm8001_ioctl_payload payload;
+
+	pm8001_ha->nvmd_completion = &completion;
+	payload.minor_function = 7;
+	payload.offset = 0;
+	payload.rd_length = 4096;
+	payload.func_specific = kzalloc(4096, GFP_KERNEL);
+	if (!payload.func_specific)
+		return -ENOMEM;
+	if (PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload)) {
+		kfree(payload.func_specific);
+		return -ENOMEM;
+	}
+	wait_for_completion(&completion);
+	for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
+		bios_index++)
+		str += sprintf(str, "%c",
+			*(payload.func_specific+bios_index));
+	kfree(payload.func_specific);
+	return str - buf;
+}
+static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
+/**
+ * event_log_size_show - event log size
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs read  shost attribute.
+ */
+static ssize_t event_log_size_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	return snprintf(buf, PAGE_SIZE, "%d\n",
+		pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size);
+}
+static DEVICE_ATTR_RO(event_log_size);
+/**
+ * pm8001_ctl_iop_log_show - IOP event log
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	char *str = buf;
+	u32 read_size =
+		pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size / 1024;
+	static u32 start, end, count;
+	u32 max_read_times = 32;
+	u32 max_count = (read_size * 1024) / (max_read_times * 4);
+	u32 *temp = (u32 *)pm8001_ha->memoryMap.region[IOP].virt_ptr;
+
+	if ((count % max_count) == 0) {
+		start = 0;
+		end = max_read_times;
+		count = 0;
+	} else {
+		start = end;
+		end = end + max_read_times;
+	}
+
+	for (; start < end; start++)
+		str += sprintf(str, "%08x ", *(temp+start));
+	count++;
+	return str - buf;
+}
+static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
+
+/**
+ * pm8001_ctl_fatal_log_show - fatal error logging
+ * @cdev:pointer to embedded class device
+ * @attr: device attribute
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+
+static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	ssize_t count;
+
+	count = pm80xx_get_fatal_dump(cdev, attr, buf);
+	return count;
+}
+
+static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
+
+/**
+ * non_fatal_log_show - non fatal error logging
+ * @cdev:pointer to embedded class device
+ * @attr: device attribute
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t non_fatal_log_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	u32 count;
+
+	count = pm80xx_get_non_fatal_dump(cdev, attr, buf);
+	return count;
+}
+static DEVICE_ATTR_RO(non_fatal_log);
+
+static ssize_t non_fatal_count_show(struct device *cdev,
+		struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	return snprintf(buf, PAGE_SIZE, "%08x",
+			pm8001_ha->non_fatal_count);
+}
+
+static ssize_t non_fatal_count_store(struct device *cdev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	int val = 0;
+
+	if (kstrtoint(buf, 16, &val) != 0)
+		return -EINVAL;
+
+	pm8001_ha->non_fatal_count = val;
+	return strlen(buf);
+}
+static DEVICE_ATTR_RW(non_fatal_count);
+
+/**
+ * pm8001_ctl_gsm_log_show - gsm dump collection
+ * @cdev:pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
+	struct device_attribute *attr, char *buf)
+{
+	ssize_t count;
+
+	count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
+	return count;
+}
+
+static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
+
+#define FLASH_CMD_NONE      0x00
+#define FLASH_CMD_UPDATE    0x01
+#define FLASH_CMD_SET_NVMD    0x02
+
+struct flash_command {
+     u8      command[8];
+     int     code;
+};
+
+static const struct flash_command flash_command_table[] = {
+     {"set_nvmd",    FLASH_CMD_SET_NVMD},
+     {"update",      FLASH_CMD_UPDATE},
+     {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
+};
+
+struct error_fw {
+     char    *reason;
+     int     err_code;
+};
+
+static const struct error_fw flash_error_table[] = {
+     {"Failed to open fw image file",	FAIL_OPEN_BIOS_FILE},
+     {"image header mismatch",		FLASH_UPDATE_HDR_ERR},
+     {"image offset mismatch",		FLASH_UPDATE_OFFSET_ERR},
+     {"image CRC Error",		FLASH_UPDATE_CRC_ERR},
+     {"image length Error.",		FLASH_UPDATE_LENGTH_ERR},
+     {"Failed to program flash chip",	FLASH_UPDATE_HW_ERR},
+     {"Flash chip not supported.",	FLASH_UPDATE_DNLD_NOT_SUPPORTED},
+     {"Flash update disabled.",		FLASH_UPDATE_DISABLED},
+     {"Flash in progress",		FLASH_IN_PROGRESS},
+     {"Image file size Error",		FAIL_FILE_SIZE},
+     {"Input parameter error",		FAIL_PARAMETERS},
+     {"Out of memory",			FAIL_OUT_MEMORY},
+     {"OK", 0}	/* Last entry err_code = 0. */
+};
+
+static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
+{
+	struct pm8001_ioctl_payload	*payload;
+	DECLARE_COMPLETION_ONSTACK(completion);
+	u8		*ioctlbuffer;
+	u32		ret;
+	u32		length = 1024 * 5 + sizeof(*payload) - 1;
+
+	if (pm8001_ha->fw_image->size > 4096) {
+		pm8001_ha->fw_status = FAIL_FILE_SIZE;
+		return -EFAULT;
+	}
+
+	ioctlbuffer = kzalloc(length, GFP_KERNEL);
+	if (!ioctlbuffer) {
+		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
+		return -ENOMEM;
+	}
+	payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
+	memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
+				pm8001_ha->fw_image->size);
+	payload->wr_length = pm8001_ha->fw_image->size;
+	payload->id = 0;
+	payload->minor_function = 0x1;
+	pm8001_ha->nvmd_completion = &completion;
+	ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
+	if (ret) {
+		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
+		goto out;
+	}
+	wait_for_completion(&completion);
+out:
+	kfree(ioctlbuffer);
+	return ret;
+}
+
+static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
+{
+	struct pm8001_ioctl_payload	*payload;
+	DECLARE_COMPLETION_ONSTACK(completion);
+	u8		*ioctlbuffer;
+	struct fw_control_info	*fwControl;
+	__be32		partitionSizeTmp;
+	u32		partitionSize;
+	u32		loopNumber, loopcount;
+	struct pm8001_fw_image_header *image_hdr;
+	u32		sizeRead = 0;
+	u32		ret = 0;
+	u32		length = 1024 * 16 + sizeof(*payload) - 1;
+	u32		fc_len;
+	u8		*read_buf;
+
+	if (pm8001_ha->fw_image->size < 28) {
+		pm8001_ha->fw_status = FAIL_FILE_SIZE;
+		return -EFAULT;
+	}
+	ioctlbuffer = kzalloc(length, GFP_KERNEL);
+	if (!ioctlbuffer) {
+		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
+		return -ENOMEM;
+	}
+	image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
+	while (sizeRead < pm8001_ha->fw_image->size) {
+		partitionSizeTmp =
+			*(__be32 *)((u8 *)&image_hdr->image_length + sizeRead);
+		partitionSize = be32_to_cpu(partitionSizeTmp);
+		loopcount = DIV_ROUND_UP(partitionSize + HEADER_LEN,
+					IOCTL_BUF_SIZE);
+		for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
+			payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
+			payload->wr_length = 1024*16;
+			payload->id = 0;
+			fwControl =
+			      (struct fw_control_info *)&payload->func_specific;
+			fwControl->len = IOCTL_BUF_SIZE;   /* IN */
+			fwControl->size = partitionSize + HEADER_LEN;/* IN */
+			fwControl->retcode = 0;/* OUT */
+			fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
+
+			/*
+			 * for the last chunk of data in case file size is
+			 * not even with 4k, load only the rest
+			 */
+
+			read_buf  = (u8 *)pm8001_ha->fw_image->data + sizeRead;
+			fc_len = (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
+
+			if (loopcount - loopNumber == 1 && fc_len) {
+				fwControl->len = fc_len;
+				memcpy((u8 *)fwControl->buffer, read_buf, fc_len);
+				sizeRead += fc_len;
+			} else {
+				memcpy((u8 *)fwControl->buffer, read_buf, IOCTL_BUF_SIZE);
+				sizeRead += IOCTL_BUF_SIZE;
+			}
+
+			pm8001_ha->nvmd_completion = &completion;
+			ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
+			if (ret) {
+				pm8001_ha->fw_status = FAIL_OUT_MEMORY;
+				goto out;
+			}
+			wait_for_completion(&completion);
+			if (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS) {
+				pm8001_ha->fw_status = fwControl->retcode;
+				ret = -EFAULT;
+				goto out;
+			}
+		}
+	}
+out:
+	kfree(ioctlbuffer);
+	return ret;
+}
+static ssize_t pm8001_store_update_fw(struct device *cdev,
+				      struct device_attribute *attr,
+				      const char *buf, size_t count)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	char *cmd_ptr, *filename_ptr;
+	int res, i;
+	int flash_command = FLASH_CMD_NONE;
+	int ret;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EACCES;
+
+	/* this test protects us from running two flash processes at once,
+	 * so we should start with this test */
+	if (pm8001_ha->fw_status == FLASH_IN_PROGRESS)
+		return -EINPROGRESS;
+	pm8001_ha->fw_status = FLASH_IN_PROGRESS;
+
+	cmd_ptr = kcalloc(count, 2, GFP_KERNEL);
+	if (!cmd_ptr) {
+		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
+		return -ENOMEM;
+	}
+
+	filename_ptr = cmd_ptr + count;
+	res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
+	if (res != 2) {
+		pm8001_ha->fw_status = FAIL_PARAMETERS;
+		ret = -EINVAL;
+		goto out;
+	}
+
+	for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
+		if (!memcmp(flash_command_table[i].command,
+				 cmd_ptr, strlen(cmd_ptr))) {
+			flash_command = flash_command_table[i].code;
+			break;
+		}
+	}
+	if (flash_command == FLASH_CMD_NONE) {
+		pm8001_ha->fw_status = FAIL_PARAMETERS;
+		ret = -EINVAL;
+		goto out;
+	}
+
+	ret = request_firmware(&pm8001_ha->fw_image,
+			       filename_ptr,
+			       pm8001_ha->dev);
+
+	if (ret) {
+		pm8001_dbg(pm8001_ha, FAIL,
+			   "Failed to load firmware image file %s, error %d\n",
+			   filename_ptr, ret);
+		pm8001_ha->fw_status = FAIL_OPEN_BIOS_FILE;
+		goto out;
+	}
+
+	if (FLASH_CMD_UPDATE == flash_command)
+		ret = pm8001_update_flash(pm8001_ha);
+	else
+		ret = pm8001_set_nvmd(pm8001_ha);
+
+	release_firmware(pm8001_ha->fw_image);
+out:
+	kfree(cmd_ptr);
+
+	if (ret)
+		return ret;
+
+	pm8001_ha->fw_status = FLASH_OK;
+	return count;
+}
+
+static ssize_t pm8001_show_update_fw(struct device *cdev,
+				     struct device_attribute *attr, char *buf)
+{
+	int i;
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+
+	for (i = 0; flash_error_table[i].err_code != 0; i++) {
+		if (flash_error_table[i].err_code == pm8001_ha->fw_status)
+			break;
+	}
+	if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
+		pm8001_ha->fw_status = FLASH_OK;
+
+	return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
+			flash_error_table[i].err_code,
+			flash_error_table[i].reason);
+}
+static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
+	pm8001_show_update_fw, pm8001_store_update_fw);
+
+static const char *const mpiStateText[] = {
+	"MPI is not initialized",
+	"MPI is successfully initialized",
+	"MPI termination is in progress",
+	"MPI initialization failed with error in [31:16]"
+};
+
+/**
+ * ctl_mpi_state_show - controller MPI state check
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t ctl_mpi_state_show(struct device *cdev,
+		struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	unsigned int mpidw0;
+
+	mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
+	return sysfs_emit(buf, "%s\n", mpiStateText[mpidw0 & 0x0003]);
+}
+static DEVICE_ATTR_RO(ctl_mpi_state);
+
+/**
+ * ctl_hmi_error_show - controller MPI initialization fails
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t ctl_hmi_error_show(struct device *cdev,
+		struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	unsigned int mpidw0;
+
+	mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
+	return sysfs_emit(buf, "0x%08x\n", (mpidw0 >> 16));
+}
+static DEVICE_ATTR_RO(ctl_hmi_error);
+
+/**
+ * ctl_raae_count_show - controller raae count check
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t ctl_raae_count_show(struct device *cdev,
+		struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	unsigned int raaecnt;
+
+	raaecnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 12);
+	return sysfs_emit(buf, "0x%08x\n", raaecnt);
+}
+static DEVICE_ATTR_RO(ctl_raae_count);
+
+/**
+ * ctl_iop0_count_show - controller iop0 count check
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t ctl_iop0_count_show(struct device *cdev,
+		struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	unsigned int iop0cnt;
+
+	iop0cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 16);
+	return sysfs_emit(buf, "0x%08x\n", iop0cnt);
+}
+static DEVICE_ATTR_RO(ctl_iop0_count);
+
+/**
+ * ctl_iop1_count_show - controller iop1 count check
+ * @cdev: pointer to embedded class device
+ * @attr: device attribute (unused)
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t ctl_iop1_count_show(struct device *cdev,
+		struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = class_to_shost(cdev);
+	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
+	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
+	unsigned int iop1cnt;
+
+	iop1cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 20);
+	return sysfs_emit(buf, "0x%08x\n", iop1cnt);
+
+}
+static DEVICE_ATTR_RO(ctl_iop1_count);
+
+static struct attribute *pm8001_host_attrs[] = {
+	&dev_attr_interface_rev.attr,
+	&dev_attr_controller_fatal_error.attr,
+	&dev_attr_fw_version.attr,
+	&dev_attr_update_fw.attr,
+	&dev_attr_aap_log.attr,
+	&dev_attr_iop_log.attr,
+	&dev_attr_fatal_log.attr,
+	&dev_attr_non_fatal_log.attr,
+	&dev_attr_non_fatal_count.attr,
+	&dev_attr_gsm_log.attr,
+	&dev_attr_max_out_io.attr,
+	&dev_attr_max_devices.attr,
+	&dev_attr_max_sg_list.attr,
+	&dev_attr_sas_spec_support.attr,
+	&dev_attr_logging_level.attr,
+	&dev_attr_event_log_size.attr,
+	&dev_attr_host_sas_address.attr,
+	&dev_attr_bios_version.attr,
+	&dev_attr_ib_log.attr,
+	&dev_attr_ob_log.attr,
+	&dev_attr_ila_version.attr,
+	&dev_attr_inc_fw_ver.attr,
+	&dev_attr_ctl_mpi_state.attr,
+	&dev_attr_ctl_hmi_error.attr,
+	&dev_attr_ctl_raae_count.attr,
+	&dev_attr_ctl_iop0_count.attr,
+	&dev_attr_ctl_iop1_count.attr,
+	NULL,
+};
+
+static const struct attribute_group pm8001_host_attr_group = {
+	.attrs = pm8001_host_attrs
+};
+
+const struct attribute_group *pm8001_host_groups[] = {
+	&pm8001_host_attr_group,
+	NULL
+};