2b44f56202
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAmUOqSMACgkQONu9yGCS aT6xIg//SVVT7zeyVcdNSchMLT6N1sJKtnplNnhyM6oFPlnyRJbgm608p394osx9 bMkz8QNPugdJz075nFt1blC2qqh2GqNkgaAM1bSKrVmUhBR3ouaO2vKfTamd1qkQ uHjE2+4NSlJu0zeqF+D+xmYYo3W32XXfDjn64p3dYiEVFtM4J0r633OpkNTZL3KR b8Ooj0sE6WtG5Lt4I64z74/p8QjK8ESW7N7hYUjADadoycn7ms5wwED6KbXwO+Ed 3piSteS8bddtx+s6pblRwHvRcOMU3NX0rVG8x3lBtdnjAk32/HEsUm7mAycqJdsJ TQ67UJ4gyqzrCtDfrbhZ9hKpaEHGuy6nnjKfXtnlSKZ+8h4uuxK0rIwFlZuS+sjH Xm99yiA6KK+CbdR9/ltgQyr5kaTcIqauA6VTjbqqJ3Fuj4OWEz3N2ALUpWeLPNpe Enl7b5/eQ4B0sDOYDVG4HsjRTt7ZgNVGFxRRp8ZulDKgX9G4M0K2khq/b3PM9aEQ gkgWDxLt3H0EO+6mRgCA0J3a/TSC6gPgV8t8iNcg5rzlXngJzAajdgi7HBMnhPdl 8y8JCfojtA+RuHWHOEmPXJG1AmwQ4df7szVxbv8WDuidIqv2tb09POo38s/UWHeN NGM5nh1WSCs4hQBfkx4wk58xSZ/jAh4/Uq6g3GasmqlknhA8TjQ= =dWOv -----END PGP SIGNATURE----- Merge 5.4.257 into android11-5.4-lts Changes in 5.4.257 erofs: ensure that the post-EOF tails are all zeroed ARM: pxa: remove use of symbol_get() mmc: au1xmmc: force non-modular build and remove symbol_get usage net: enetc: use EXPORT_SYMBOL_GPL for enetc_phc_index rtc: ds1685: use EXPORT_SYMBOL_GPL for ds1685_rtc_poweroff modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules USB: serial: option: add Quectel EM05G variant (0x030e) USB: serial: option: add FOXCONN T99W368/T99W373 product HID: wacom: remove the battery when the EKR is off staging: rtl8712: fix race condition Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition serial: sc16is7xx: fix bug when first setting GPIO direction firmware: stratix10-svc: Fix an NULL vs IS_ERR() bug in probe fsi: master-ast-cf: Add MODULE_FIRMWARE macro nilfs2: fix general protection fault in nilfs_lookup_dirty_data_buffers() nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse pinctrl: amd: Don't show `Invalid config param` errors 9p: virtio: make sure 'offs' is initialized in zc_request ASoC: da7219: Flush pending AAD IRQ when suspending ASoC: da7219: Check for failure reading AAD IRQ events ethernet: atheros: fix return value check in atl1c_tso_csum() vxlan: generalize vxlan_parse_gpe_hdr and remove unused args m68k: Fix invalid .section syntax s390/dasd: use correct number of retries for ERP requests s390/dasd: fix hanging device after request requeue fs/nls: make load_nls() take a const parameter ASoc: codecs: ES8316: Fix DMIC config ASoC: atmel: Fix the 8K sample parameter in I2SC master platform/x86: intel: hid: Always call BTNL ACPI method platform/x86: huawei-wmi: Silence ambient light sensor security: keys: perform capable check only on privileged operations clk: fixed-mmio: make COMMON_CLK_FIXED_MMIO depend on HAS_IOMEM net: usb: qmi_wwan: add Quectel EM05GV2 idmaengine: make FSL_EDMA and INTEL_IDMA64 depends on HAS_IOMEM scsi: qedi: Fix potential deadlock on &qedi_percpu->p_work_lock netlabel: fix shift wrapping bug in netlbl_catmap_setlong() bnx2x: fix page fault following EEH recovery sctp: handle invalid error codes without calling BUG() cifs: add a warning when the in-flight count goes negative scsi: storvsc: Always set no_report_opcodes ALSA: seq: oss: Fix racy open/close of MIDI devices platform/mellanox: Fix mlxbf-tmfifo not handling all virtio CONSOLE notifications net: Avoid address overwrite in kernel_connect powerpc/32s: Fix assembler warning about r0 udf: Check consistency of Space Bitmap Descriptor udf: Handle error when adding extent to a file Revert "net: macsec: preserve ingress frame ordering" reiserfs: Check the return value from __getblk() eventfd: Export eventfd_ctx_do_read() eventfd: prevent underflow for eventfd semaphores new helper: lookup_positive_unlocked() fs: Fix error checking for d_hash_and_lookup() tmpfs: verify {g,u}id mount options correctly OPP: Fix passing 0 to PTR_ERR in _opp_attach_genpd() x86/asm: Make more symbols local x86/boot: Annotate local functions x86/decompressor: Don't rely on upper 32 bits of GPRs being preserved perf/imx_ddr: don't enable counter0 if none of 4 counters are used cpufreq: powernow-k8: Use related_cpus instead of cpus in driver.exit() bpf: Clear the probe_addr for uprobe tcp: tcp_enter_quickack_mode() should be static regmap: rbtree: Use alloc_flags for memory allocations spi: tegra20-sflash: fix to check return value of platform_get_irq() in tegra_sflash_probe() can: gs_usb: gs_usb_receive_bulk_callback(): count RX overflow errors also in case of OOM wifi: mwifiex: Fix OOB and integer underflow when rx packets mwifiex: switch from 'pci_' to 'dma_' API wifi: mwifiex: fix error recovery in PCIE buffer descriptor management crypto: stm32 - Properly handle pm_runtime_get failing Bluetooth: nokia: fix value check in nokia_bluetooth_serdev_probe() crypto: caam - fix unchecked return value error hwrng: iproc-rng200 - use semicolons rather than commas to separate statements hwrng: iproc-rng200 - Implement suspend and resume calls lwt: Fix return values of BPF xmit ops lwt: Check LWTUNNEL_XMIT_CONTINUE strictly fs: ocfs2: namei: check return value of ocfs2_add_entry() wifi: mwifiex: fix memory leak in mwifiex_histogram_read() wifi: mwifiex: Fix missed return in oob checks failed path wifi: ath9k: fix races between ath9k_wmi_cmd and ath9k_wmi_ctrl_rx wifi: ath9k: protect WMI command response buffer replacement with a lock wifi: mwifiex: avoid possible NULL skb pointer dereference wifi: ath9k: use IS_ERR() with debugfs_create_dir() net: arcnet: Do not call kfree_skb() under local_irq_disable() mlxsw: i2c: Fix chunk size setting in output mailbox buffer mlxsw: i2c: Limit single transaction buffer size net/sched: sch_hfsc: Ensure inner classes have fsc curve netrom: Deny concurrent connect(). drm/bridge: tc358764: Fix debug print parameter order quota: avoid increasing DQST_LOOKUPS when iterating over dirty/inuse list quota: factor out dquot_write_dquot() quota: rename dquot_active() to inode_quota_active() quota: add new helper dquot_active() quota: fix dqput() to follow the guarantees dquot_srcu should provide drm/amdgpu: avoid integer overflow warning in amdgpu_device_resize_fb_bar() ARM: dts: BCM53573: Drop nonexistent "default-off" LED trigger ARM: dts: BCM53573: Add cells sizes to PCIe node ARM: dts: BCM53573: Use updated "spi-gpio" binding properties drm/etnaviv: fix dumping of active MMU context ARM: dts: s3c6410: move fixed clocks under root node in Mini6410 ARM: dts: s3c6410: align node SROM bus node name with dtschema in Mini6410 ARM: dts: s3c64xx: align pinctrl with dtschema ARM: dts: samsung: s3c6410-mini6410: correct ethernet reg addresses (split) ARM: dts: s5pv210: add RTC 32 KHz clock in SMDKV210 ARM: dts: s5pv210: use defines for IRQ flags in SMDKV210 ARM: dts: s5pv210: correct ethernet unit address in SMDKV210 ARM: dts: s5pv210: add dummy 5V regulator for backlight on SMDKv210 ARM: dts: samsung: s5pv210-smdkv210: correct ethernet reg addresses (split) drm: adv7511: Fix low refresh rate register for ADV7533/5 ARM: dts: BCM53573: Fix Ethernet info for Luxul devices arm64: dts: qcom: sdm845: Add missing RPMh power domain to GCC drm/amdgpu: Update min() to min_t() in 'amdgpu_info_ioctl' md/bitmap: don't set max_write_behind if there is no write mostly device md/md-bitmap: hold 'reconfig_mutex' in backlog_store() drm/tegra: Remove superfluous error messages around platform_get_irq() drm/tegra: dpaux: Fix incorrect return value of platform_get_irq of: unittest: fix null pointer dereferencing in of_unittest_find_node_by_name() drm/armada: Fix off-by-one error in armada_overlay_get_property() drm/panel: simple: Add missing connector type and pixel format for AUO T215HVN01 ima: Remove deprecated IMA_TRUSTED_KEYRING Kconfig drm/msm/mdp5: Don't leak some plane state smackfs: Prevent underflow in smk_set_cipso() audit: fix possible soft lockup in __audit_inode_child() drm/mediatek: Fix potential memory leak if vmap() fail of: unittest: Fix overlay type in apply/revert check ALSA: ac97: Fix possible error value of *rac97 ipmi:ssif: Add check for kstrdup ipmi:ssif: Fix a memory leak when scanning for an adapter drivers: clk: keystone: Fix parameter judgment in _of_pll_clk_init() clk: sunxi-ng: Modify mismatched function name PCI: Mark NVIDIA T4 GPUs to avoid bus reset PCI: pciehp: Use RMW accessors for changing LNKCTL PCI/ASPM: Use RMW accessors for changing LNKCTL clk: imx: composite-8m: fix clock pauses when set_rate would be a no-op powerpc/fadump: reset dump area size if fadump memory reserve fails PCI: Add #defines for Enter Compliance, Transmit Margin drm/amdgpu: Correct Transmit Margin masks drm/amdgpu: Replace numbers with PCI_EXP_LNKCTL2 definitions drm/amdgpu: Prefer pcie_capability_read_word() drm/amdgpu: Use RMW accessors for changing LNKCTL drm/radeon: Correct Transmit Margin masks drm/radeon: Replace numbers with PCI_EXP_LNKCTL2 definitions drm/radeon: Prefer pcie_capability_read_word() drm/radeon: Use RMW accessors for changing LNKCTL wifi: ath10k: Use RMW accessors for changing LNKCTL nfs/blocklayout: Use the passed in gfp flags powerpc/iommu: Fix notifiers being shared by PCI and VIO buses jfs: validate max amount of blocks before allocation. fs: lockd: avoid possible wrong NULL parameter NFSD: da_addr_body field missing in some GETDEVICEINFO replies NFS: Guard against READDIR loop when entry names exceed MAXNAMELEN media: v4l2-fwnode: fix v4l2_fwnode_parse_link handling media: v4l2-fwnode: simplify v4l2_fwnode_parse_link media: v4l2-core: Fix a potential resource leak in v4l2_fwnode_parse_link() drivers: usb: smsusb: fix error handling code in smsusb_init_device media: dib7000p: Fix potential division by zero media: dvb-usb: m920x: Fix a potential memory leak in m920x_i2c_xfer() media: cx24120: Add retval check for cx24120_message_send() media: mediatek: vcodec: Return NULL if no vdec_fb is found usb: phy: mxs: fix getting wrong state with mxs_phy_is_otg_host() scsi: iscsi: Add strlen() check in iscsi_if_set{_host}_param() scsi: be2iscsi: Add length check when parsing nlattrs scsi: qla4xxx: Add length check when parsing nlattrs serial: sprd: getting port index via serial aliases only serial: sprd: remove redundant sprd_port cleanup serial: sprd: Assign sprd_port after initialized to avoid wrong access serial: sprd: Fix DMA buffer leak issue x86/APM: drop the duplicate APM_MINOR_DEV macro scsi: qedf: Do not touch __user pointer in qedf_dbg_stop_io_on_error_cmd_read() directly scsi: qedf: Do not touch __user pointer in qedf_dbg_debug_cmd_read() directly scsi: qedf: Do not touch __user pointer in qedf_dbg_fp_int_cmd_read() directly coresight: tmc: Explicit type conversions to prevent integer overflow dma-buf/sync_file: Fix docs syntax driver core: test_async: fix an error code IB/uverbs: Fix an potential error pointer dereference iommu/vt-d: Fix to flush cache of PASID directory table media: go7007: Remove redundant if statement USB: gadget: f_mass_storage: Fix unused variable warning media: i2c: ov5640: Configure HVP lines in s_power callback media: ov5640: Enable MIPI interface in ov5640_set_power_mipi() media: i2c: ov2680: Set V4L2_CTRL_FLAG_MODIFY_LAYOUT on flips media: ov2680: Remove auto-gain and auto-exposure controls media: ov2680: Fix ov2680_bayer_order() media: ov2680: Fix vflip / hflip set functions media: ov2680: Fix regulators being left enabled on ov2680_power_on() errors scsi: core: Use 32-bit hostnum in scsi_host_lookup() scsi: fcoe: Fix potential deadlock on &fip->ctlr_lock serial: tegra: handle clk prepare error in tegra_uart_hw_init() amba: bus: fix refcount leak Revert "IB/isert: Fix incorrect release of isert connection" RDMA/siw: Balance the reference of cep->kref in the error path RDMA/siw: Correct wrong debug message HID: logitech-dj: Fix error handling in logi_dj_recv_switch_to_dj_mode() HID: multitouch: Correct devm device reference for hidinput input_dev name x86/speculation: Mark all Skylake CPUs as vulnerable to GDS tracing: Fix race issue between cpu buffer write and swap phy/rockchip: inno-hdmi: use correct vco_div_5 macro on rk3328 phy/rockchip: inno-hdmi: round fractal pixclock in rk3328 recalc_rate phy/rockchip: inno-hdmi: do not power on rk3328 post pll on reg write rpmsg: glink: Add check for kstrdup mtd: rawnand: fsmc: handle clk prepare error in fsmc_nand_resume() um: Fix hostaudio build errors dmaengine: ste_dma40: Add missing IRQ check in d40_probe cpufreq: Fix the race condition while updating the transition_task of policy virtio_ring: fix avail_wrap_counter in virtqueue_add_packed igmp: limit igmpv3_newpack() packet size to IP_MAX_MTU netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c netfilter: xt_u32: validate user space input netfilter: xt_sctp: validate the flag_info count skbuff: skb_segment, Call zero copy functions before using skbuff frags igb: set max size RX buffer when store bad packet is enabled PM / devfreq: Fix leak in devfreq_dev_release() ALSA: pcm: Fix missing fixup call in compat hw_refine ioctl ipmi_si: fix a memleak in try_smi_init() ARM: OMAP2+: Fix -Warray-bounds warning in _pwrdm_state_switch() backlight/gpio_backlight: Compare against struct fb_info.device backlight/bd6107: Compare against struct fb_info.device backlight/lv5207lp: Compare against struct fb_info.device xtensa: PMU: fix base address for the newer hardware media: dvb: symbol fixup for dvb_attach() ntb: Drop packets when qp link is down ntb: Clean up tx tail index on link down ntb: Fix calculation ntb_transport_tx_free_entry() Revert "PCI: Mark NVIDIA T4 GPUs to avoid bus reset" procfs: block chmod on /proc/thread-self/comm parisc: Fix /proc/cpuinfo output for lscpu dlm: fix plock lookup when using multiple lockspaces dccp: Fix out of bounds access in DCCP error handler X.509: if signature is unsupported skip validation net: handle ARPHRD_PPP in dev_is_mac_header_xmit() fsverity: skip PKCS#7 parser when keyring is empty pstore/ram: Check start of empty przs during init s390/ipl: add missing secure/has_secure file to ipl type 'unknown' crypto: stm32 - fix loop iterating through scatterlist for DMA cpufreq: brcmstb-avs-cpufreq: Fix -Warray-bounds bug sc16is7xx: Set iobase to device index serial: sc16is7xx: fix broken port 0 uart init usb: typec: tcpci: clear the fault status bit udf: initialize newblock to 0 drm: fix double free for gbo in drm_gem_vram_init and drm_gem_vram_create net/ipv6: SKB symmetric hash should incorporate transport ports scsi: qla2xxx: fix inconsistent TMF timeout scsi: qla2xxx: Fix erroneous link up failure scsi: qla2xxx: Turn off noisy message log scsi: qla2xxx: Remove unsupported ql2xenabledif option fbdev/ep93xx-fb: Do not assign to struct fb_info.dev drm/ast: Fix DRAM init on AST2200 lib/test_meminit: allocate pages up to order MAX_ORDER parisc: led: Fix LAN receive and transmit LEDs parisc: led: Reduce CPU overhead for disk & lan LED computation clk: qcom: gcc-mdm9615: use proper parent for pll0_vote clock soc: qcom: qmi_encdec: Restrict string length in decode NFSv4/pnfs: minor fix for cleanup path in nfs4_get_device_info kconfig: fix possible buffer overflow perf annotate bpf: Don't enclose non-debug code with an assert() x86/virt: Drop unnecessary check on extended CPUID level in cpu_has_svm() perf top: Don't pass an ERR_PTR() directly to perf_session__delete() watchdog: intel-mid_wdt: add MODULE_ALIAS() to allow auto-load pwm: lpc32xx: Remove handling of PWM channels sctp: annotate data-races around sk->sk_wmem_queued ipv4: annotate data-races around fi->fib_dead net: read sk->sk_family once in sk_mc_loop() igb: disable virtualization features on 82580 veth: Fixing transmit return status for dropped packets net: ipv6/addrconf: avoid integer underflow in ipv6_create_tempaddr af_unix: Fix data-races around user->unix_inflight. af_unix: Fix data-race around unix_tot_inflight. af_unix: Fix data-races around sk->sk_shutdown. af_unix: Fix data race around sk->sk_err. net: sched: sch_qfq: Fix UAF in qfq_dequeue() kcm: Destroy mutex in kcm_exit_net() igc: Change IGC_MIN to allow set rx/tx value between 64 and 80 igbvf: Change IGBVF_MIN to allow set rx/tx value between 64 and 80 igb: Change IGB_MIN to allow set rx/tx value between 64 and 80 s390/zcrypt: don't leak memory if dev_set_name() fails idr: fix param name in idr_alloc_cyclic() doc ip_tunnels: use DEV_STATS_INC() netfilter: nfnetlink_osf: avoid OOB read net: hns3: fix the port information display when sfp is absent sh: boards: Fix CEU buffer size passed to dma_declare_coherent_memory() ata: sata_gemini: Add missing MODULE_DESCRIPTION ata: pata_ftide010: Add missing MODULE_DESCRIPTION fuse: nlookup missing decrement in fuse_direntplus_link btrfs: don't start transaction when joining with TRANS_JOIN_NOSTART btrfs: use the correct superblock to compare fsid in btrfs_validate_super mtd: rawnand: brcmnand: Fix crash during the panic_write mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write mtd: rawnand: brcmnand: Fix potential false time out warning perf hists browser: Fix hierarchy mode header perf tools: Handle old data in PERF_RECORD_ATTR usb: typec: tcpm: Refactor tcpm_handle_vdm_request payload handling usb: typec: tcpm: Refactor tcpm_handle_vdm_request usb: typec: bus: verify partner exists in typec_altmode_attention ARM: dts: BCM5301X: Extend RAM to full 256MB for Linksys EA6500 V2 clk: imx8mm: Move 1443X/1416X PLL clock structure to common place net: ipv4: fix one memleak in __inet_del_ifa() net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc() net: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_hwlro_get_fdir_all() r8152: check budget for r8152_poll() kcm: Fix memory leak in error path of kcm_sendmsg() platform/mellanox: mlxbf-tmfifo: Drop the Rx packet if no more descriptors mlxbf-tmfifo: sparse tags for config access platform/mellanox: mlxbf-tmfifo: Drop jumbo frames net/tls: do not free tls_rec on async operation in bpf_exec_tx_verdict() ixgbe: fix timestamp configuration code kcm: Fix error handling for SOCK_DGRAM in kcm_sendmsg(). drm/amd/display: Fix a bug when searching for insert_above_mpcc parisc: Drop loops_per_jiffy from per_cpu struct autofs: fix memory leak of waitqueues in autofs_catatonic_mode btrfs: output extra debug info if we failed to find an inline backref locks: fix KASAN: use-after-free in trace_event_raw_event_filelock_lock ACPICA: Add AML_NO_OPERAND_RESOLVE flag to Timer kernel/fork: beware of __put_task_struct() calling context ACPI: video: Add backlight=native DMI quirk for Lenovo Ideapad Z470 perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09 hw_breakpoint: fix single-stepping when using bpf_overflow_handler devlink: remove reload failed checks in params get/set callbacks wifi: ath9k: fix printk specifier wifi: mwifiex: fix fortify warning crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui() tpm_tis: Resend command to recover from data transfer errors mmc: sdhci-esdhc-imx: improve ESDHC_FLAG_ERR010450 alx: fix OOB-read compiler warning wifi: mac80211_hwsim: drop short frames drm/exynos: fix a possible null-pointer dereference due to data race in exynos_drm_crtc_atomic_disable() bus: ti-sysc: Configure uart quirks for k3 SoC md: raid1: fix potential OOB in raid1_remove_disk() ext2: fix datatype of block number in ext2_xattr_set2() fs/jfs: prevent double-free in dbUnmount() after failed jfs_remount() jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount powerpc/pseries: fix possible memory leak in ibmebus_bus_init() media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer() media: af9005: Fix null-ptr-deref in af9005_i2c_xfer media: anysee: fix null-ptr-deref in anysee_master_xfer media: az6007: Fix null-ptr-deref in az6007_i2c_xfer() media: tuners: qt1010: replace BUG_ON with a regular error media: pci: cx23885: replace BUG with error return usb: gadget: fsl_qe_udc: validate endpoint index for ch9 udc scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() serial: cpm_uart: Avoid suspicious locking media: pci: ipu3-cio2: Initialise timing struct to avoid a compiler warning kobject: Add sanity check for kset->kobj.ktype in kset_register() tools features: Add feature test to check if libbfd has buildid support perf jevents: Make build dependency on test JSONs perf tools: Add an option to build without libbfd btrfs: move btrfs_pinned_by_swapfile prototype into volumes.h btrfs: add a helper to read the superblock metadata_uuid btrfs: compare the correct fsid/metadata_uuid in btrfs_validate_super selftests: tracing: Fix to unmount tracefs for recovering environment md/raid1: fix error: ISO C90 forbids mixed declarations attr: block mode changes of symlinks btrfs: fix lockdep splat and potential deadlock after failure running delayed items tracing: Have current_trace inc the trace array ref count tracing: Have option files inc the trace array ref count nfsd: fix change_info in NFSv4 RENAME replies tracefs: Add missing lockdown check to tracefs_create_dir() i2c: aspeed: Reset the i2c controller when timeout occurs scsi: megaraid_sas: Fix deadlock on firmware crashdump ext4: fix rec_len verify error mtd: rawnand: brcmnand: Fix ECC level field setting for v7.2 controller drm/amdgpu: fix amdgpu_cs_p1_user_fence net/sched: Retire rsvp classifier Linux 5.4.257 Change-Id: I99f6978fc0d802b5803005fe903a90aed315d88d Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
889 lines
27 KiB
C
889 lines
27 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _SCSI_SCSI_HOST_H
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#define _SCSI_SCSI_HOST_H
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/types.h>
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#include <linux/workqueue.h>
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#include <linux/mutex.h>
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#include <linux/seq_file.h>
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#include <linux/blk-mq.h>
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#include <scsi/scsi.h>
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#include <linux/android_kabi.h>
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struct block_device;
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struct completion;
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struct module;
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struct scsi_cmnd;
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struct scsi_device;
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struct scsi_host_cmd_pool;
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struct scsi_target;
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struct Scsi_Host;
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struct scsi_host_cmd_pool;
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struct scsi_transport_template;
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/*
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* The various choices mean:
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* NONE: Self evident. Host adapter is not capable of scatter-gather.
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* ALL: Means that the host adapter module can do scatter-gather,
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* and that there is no limit to the size of the table to which
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* we scatter/gather data. The value we set here is the maximum
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* single element sglist. To use chained sglists, the adapter
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* has to set a value beyond ALL (and correctly use the chain
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* handling API.
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* Anything else: Indicates the maximum number of chains that can be
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* used in one scatter-gather request.
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*/
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#define SG_NONE 0
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#define SG_ALL SG_CHUNK_SIZE
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#define MODE_UNKNOWN 0x00
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#define MODE_INITIATOR 0x01
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#define MODE_TARGET 0x02
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struct scsi_host_template {
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struct module *module;
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const char *name;
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/*
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* The info function will return whatever useful information the
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* developer sees fit. If not provided, then the name field will
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* be used instead.
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*
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* Status: OPTIONAL
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*/
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const char *(* info)(struct Scsi_Host *);
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/*
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* Ioctl interface
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*
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* Status: OPTIONAL
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*/
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int (*ioctl)(struct scsi_device *dev, unsigned int cmd,
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void __user *arg);
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#ifdef CONFIG_COMPAT
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/*
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* Compat handler. Handle 32bit ABI.
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* When unknown ioctl is passed return -ENOIOCTLCMD.
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*
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* Status: OPTIONAL
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*/
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int (*compat_ioctl)(struct scsi_device *dev, unsigned int cmd,
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void __user *arg);
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|
#endif
|
|
|
|
/*
|
|
* The queuecommand function is used to queue up a scsi
|
|
* command block to the LLDD. When the driver finished
|
|
* processing the command the done callback is invoked.
|
|
*
|
|
* If queuecommand returns 0, then the driver has accepted the
|
|
* command. It must also push it to the HBA if the scsi_cmnd
|
|
* flag SCMD_LAST is set, or if the driver does not implement
|
|
* commit_rqs. The done() function must be called on the command
|
|
* when the driver has finished with it. (you may call done on the
|
|
* command before queuecommand returns, but in this case you
|
|
* *must* return 0 from queuecommand).
|
|
*
|
|
* Queuecommand may also reject the command, in which case it may
|
|
* not touch the command and must not call done() for it.
|
|
*
|
|
* There are two possible rejection returns:
|
|
*
|
|
* SCSI_MLQUEUE_DEVICE_BUSY: Block this device temporarily, but
|
|
* allow commands to other devices serviced by this host.
|
|
*
|
|
* SCSI_MLQUEUE_HOST_BUSY: Block all devices served by this
|
|
* host temporarily.
|
|
*
|
|
* For compatibility, any other non-zero return is treated the
|
|
* same as SCSI_MLQUEUE_HOST_BUSY.
|
|
*
|
|
* NOTE: "temporarily" means either until the next command for#
|
|
* this device/host completes, or a period of time determined by
|
|
* I/O pressure in the system if there are no other outstanding
|
|
* commands.
|
|
*
|
|
* STATUS: REQUIRED
|
|
*/
|
|
int (* queuecommand)(struct Scsi_Host *, struct scsi_cmnd *);
|
|
|
|
/*
|
|
* The commit_rqs function is used to trigger a hardware
|
|
* doorbell after some requests have been queued with
|
|
* queuecommand, when an error is encountered before sending
|
|
* the request with SCMD_LAST set.
|
|
*
|
|
* STATUS: OPTIONAL
|
|
*/
|
|
void (*commit_rqs)(struct Scsi_Host *, u16);
|
|
|
|
/*
|
|
* This is an error handling strategy routine. You don't need to
|
|
* define one of these if you don't want to - there is a default
|
|
* routine that is present that should work in most cases. For those
|
|
* driver authors that have the inclination and ability to write their
|
|
* own strategy routine, this is where it is specified. Note - the
|
|
* strategy routine is *ALWAYS* run in the context of the kernel eh
|
|
* thread. Thus you are guaranteed to *NOT* be in an interrupt
|
|
* handler when you execute this, and you are also guaranteed to
|
|
* *NOT* have any other commands being queued while you are in the
|
|
* strategy routine. When you return from this function, operations
|
|
* return to normal.
|
|
*
|
|
* See scsi_error.c scsi_unjam_host for additional comments about
|
|
* what this function should and should not be attempting to do.
|
|
*
|
|
* Status: REQUIRED (at least one of them)
|
|
*/
|
|
int (* eh_abort_handler)(struct scsi_cmnd *);
|
|
int (* eh_device_reset_handler)(struct scsi_cmnd *);
|
|
int (* eh_target_reset_handler)(struct scsi_cmnd *);
|
|
int (* eh_bus_reset_handler)(struct scsi_cmnd *);
|
|
int (* eh_host_reset_handler)(struct scsi_cmnd *);
|
|
|
|
/*
|
|
* Before the mid layer attempts to scan for a new device where none
|
|
* currently exists, it will call this entry in your driver. Should
|
|
* your driver need to allocate any structs or perform any other init
|
|
* items in order to send commands to a currently unused target/lun
|
|
* combo, then this is where you can perform those allocations. This
|
|
* is specifically so that drivers won't have to perform any kind of
|
|
* "is this a new device" checks in their queuecommand routine,
|
|
* thereby making the hot path a bit quicker.
|
|
*
|
|
* Return values: 0 on success, non-0 on failure
|
|
*
|
|
* Deallocation: If we didn't find any devices at this ID, you will
|
|
* get an immediate call to slave_destroy(). If we find something
|
|
* here then you will get a call to slave_configure(), then the
|
|
* device will be used for however long it is kept around, then when
|
|
* the device is removed from the system (or * possibly at reboot
|
|
* time), you will then get a call to slave_destroy(). This is
|
|
* assuming you implement slave_configure and slave_destroy.
|
|
* However, if you allocate memory and hang it off the device struct,
|
|
* then you must implement the slave_destroy() routine at a minimum
|
|
* in order to avoid leaking memory
|
|
* each time a device is tore down.
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
int (* slave_alloc)(struct scsi_device *);
|
|
|
|
/*
|
|
* Once the device has responded to an INQUIRY and we know the
|
|
* device is online, we call into the low level driver with the
|
|
* struct scsi_device *. If the low level device driver implements
|
|
* this function, it *must* perform the task of setting the queue
|
|
* depth on the device. All other tasks are optional and depend
|
|
* on what the driver supports and various implementation details.
|
|
*
|
|
* Things currently recommended to be handled at this time include:
|
|
*
|
|
* 1. Setting the device queue depth. Proper setting of this is
|
|
* described in the comments for scsi_change_queue_depth.
|
|
* 2. Determining if the device supports the various synchronous
|
|
* negotiation protocols. The device struct will already have
|
|
* responded to INQUIRY and the results of the standard items
|
|
* will have been shoved into the various device flag bits, eg.
|
|
* device->sdtr will be true if the device supports SDTR messages.
|
|
* 3. Allocating command structs that the device will need.
|
|
* 4. Setting the default timeout on this device (if needed).
|
|
* 5. Anything else the low level driver might want to do on a device
|
|
* specific setup basis...
|
|
* 6. Return 0 on success, non-0 on error. The device will be marked
|
|
* as offline on error so that no access will occur. If you return
|
|
* non-0, your slave_destroy routine will never get called for this
|
|
* device, so don't leave any loose memory hanging around, clean
|
|
* up after yourself before returning non-0
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
int (* slave_configure)(struct scsi_device *);
|
|
|
|
/*
|
|
* Immediately prior to deallocating the device and after all activity
|
|
* has ceased the mid layer calls this point so that the low level
|
|
* driver may completely detach itself from the scsi device and vice
|
|
* versa. The low level driver is responsible for freeing any memory
|
|
* it allocated in the slave_alloc or slave_configure calls.
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
void (* slave_destroy)(struct scsi_device *);
|
|
|
|
/*
|
|
* Before the mid layer attempts to scan for a new device attached
|
|
* to a target where no target currently exists, it will call this
|
|
* entry in your driver. Should your driver need to allocate any
|
|
* structs or perform any other init items in order to send commands
|
|
* to a currently unused target, then this is where you can perform
|
|
* those allocations.
|
|
*
|
|
* Return values: 0 on success, non-0 on failure
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
int (* target_alloc)(struct scsi_target *);
|
|
|
|
/*
|
|
* Immediately prior to deallocating the target structure, and
|
|
* after all activity to attached scsi devices has ceased, the
|
|
* midlayer calls this point so that the driver may deallocate
|
|
* and terminate any references to the target.
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
void (* target_destroy)(struct scsi_target *);
|
|
|
|
/*
|
|
* If a host has the ability to discover targets on its own instead
|
|
* of scanning the entire bus, it can fill in this function and
|
|
* call scsi_scan_host(). This function will be called periodically
|
|
* until it returns 1 with the scsi_host and the elapsed time of
|
|
* the scan in jiffies.
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
int (* scan_finished)(struct Scsi_Host *, unsigned long);
|
|
|
|
/*
|
|
* If the host wants to be called before the scan starts, but
|
|
* after the midlayer has set up ready for the scan, it can fill
|
|
* in this function.
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
void (* scan_start)(struct Scsi_Host *);
|
|
|
|
/*
|
|
* Fill in this function to allow the queue depth of this host
|
|
* to be changeable (on a per device basis). Returns either
|
|
* the current queue depth setting (may be different from what
|
|
* was passed in) or an error. An error should only be
|
|
* returned if the requested depth is legal but the driver was
|
|
* unable to set it. If the requested depth is illegal, the
|
|
* driver should set and return the closest legal queue depth.
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
int (* change_queue_depth)(struct scsi_device *, int);
|
|
|
|
/*
|
|
* This functions lets the driver expose the queue mapping
|
|
* to the block layer.
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
int (* map_queues)(struct Scsi_Host *shost);
|
|
|
|
/*
|
|
* This function determines the BIOS parameters for a given
|
|
* harddisk. These tend to be numbers that are made up by
|
|
* the host adapter. Parameters:
|
|
* size, device, list (heads, sectors, cylinders)
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
int (* bios_param)(struct scsi_device *, struct block_device *,
|
|
sector_t, int []);
|
|
|
|
/*
|
|
* This function is called when one or more partitions on the
|
|
* device reach beyond the end of the device.
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
void (*unlock_native_capacity)(struct scsi_device *);
|
|
|
|
/*
|
|
* Can be used to export driver statistics and other infos to the
|
|
* world outside the kernel ie. userspace and it also provides an
|
|
* interface to feed the driver with information.
|
|
*
|
|
* Status: OBSOLETE
|
|
*/
|
|
int (*show_info)(struct seq_file *, struct Scsi_Host *);
|
|
int (*write_info)(struct Scsi_Host *, char *, int);
|
|
|
|
/*
|
|
* This is an optional routine that allows the transport to become
|
|
* involved when a scsi io timer fires. The return value tells the
|
|
* timer routine how to finish the io timeout handling.
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
enum blk_eh_timer_return (*eh_timed_out)(struct scsi_cmnd *);
|
|
|
|
/* This is an optional routine that allows transport to initiate
|
|
* LLD adapter or firmware reset using sysfs attribute.
|
|
*
|
|
* Return values: 0 on success, -ve value on failure.
|
|
*
|
|
* Status: OPTIONAL
|
|
*/
|
|
|
|
int (*host_reset)(struct Scsi_Host *shost, int reset_type);
|
|
#define SCSI_ADAPTER_RESET 1
|
|
#define SCSI_FIRMWARE_RESET 2
|
|
|
|
|
|
/*
|
|
* Name of proc directory
|
|
*/
|
|
const char *proc_name;
|
|
|
|
/*
|
|
* Used to store the procfs directory if a driver implements the
|
|
* show_info method.
|
|
*/
|
|
struct proc_dir_entry *proc_dir;
|
|
|
|
/*
|
|
* This determines if we will use a non-interrupt driven
|
|
* or an interrupt driven scheme. It is set to the maximum number
|
|
* of simultaneous commands a given host adapter will accept.
|
|
*/
|
|
int can_queue;
|
|
|
|
/*
|
|
* In many instances, especially where disconnect / reconnect are
|
|
* supported, our host also has an ID on the SCSI bus. If this is
|
|
* the case, then it must be reserved. Please set this_id to -1 if
|
|
* your setup is in single initiator mode, and the host lacks an
|
|
* ID.
|
|
*/
|
|
int this_id;
|
|
|
|
/*
|
|
* This determines the degree to which the host adapter is capable
|
|
* of scatter-gather.
|
|
*/
|
|
unsigned short sg_tablesize;
|
|
unsigned short sg_prot_tablesize;
|
|
|
|
/*
|
|
* Set this if the host adapter has limitations beside segment count.
|
|
*/
|
|
unsigned int max_sectors;
|
|
|
|
/*
|
|
* Maximum size in bytes of a single segment.
|
|
*/
|
|
unsigned int max_segment_size;
|
|
|
|
/*
|
|
* DMA scatter gather segment boundary limit. A segment crossing this
|
|
* boundary will be split in two.
|
|
*/
|
|
unsigned long dma_boundary;
|
|
|
|
unsigned long virt_boundary_mask;
|
|
|
|
/*
|
|
* This specifies "machine infinity" for host templates which don't
|
|
* limit the transfer size. Note this limit represents an absolute
|
|
* maximum, and may be over the transfer limits allowed for
|
|
* individual devices (e.g. 256 for SCSI-1).
|
|
*/
|
|
#define SCSI_DEFAULT_MAX_SECTORS 1024
|
|
|
|
/*
|
|
* True if this host adapter can make good use of linked commands.
|
|
* This will allow more than one command to be queued to a given
|
|
* unit on a given host. Set this to the maximum number of command
|
|
* blocks to be provided for each device. Set this to 1 for one
|
|
* command block per lun, 2 for two, etc. Do not set this to 0.
|
|
* You should make sure that the host adapter will do the right thing
|
|
* before you try setting this above 1.
|
|
*/
|
|
short cmd_per_lun;
|
|
|
|
/*
|
|
* present contains counter indicating how many boards of this
|
|
* type were found when we did the scan.
|
|
*/
|
|
unsigned char present;
|
|
|
|
/* If use block layer to manage tags, this is tag allocation policy */
|
|
int tag_alloc_policy;
|
|
|
|
/*
|
|
* Track QUEUE_FULL events and reduce queue depth on demand.
|
|
*/
|
|
unsigned track_queue_depth:1;
|
|
|
|
/*
|
|
* This specifies the mode that a LLD supports.
|
|
*/
|
|
unsigned supported_mode:2;
|
|
|
|
/*
|
|
* True if this host adapter uses unchecked DMA onto an ISA bus.
|
|
*/
|
|
unsigned unchecked_isa_dma:1;
|
|
|
|
/*
|
|
* True for emulated SCSI host adapters (e.g. ATAPI).
|
|
*/
|
|
unsigned emulated:1;
|
|
|
|
/*
|
|
* True if the low-level driver performs its own reset-settle delays.
|
|
*/
|
|
unsigned skip_settle_delay:1;
|
|
|
|
/* True if the controller does not support WRITE SAME */
|
|
unsigned no_write_same:1;
|
|
|
|
/* True if the low-level driver supports blk-mq only */
|
|
unsigned force_blk_mq:1;
|
|
|
|
/*
|
|
* Countdown for host blocking with no commands outstanding.
|
|
*/
|
|
unsigned int max_host_blocked;
|
|
|
|
/*
|
|
* Default value for the blocking. If the queue is empty,
|
|
* host_blocked counts down in the request_fn until it restarts
|
|
* host operations as zero is reached.
|
|
*
|
|
* FIXME: This should probably be a value in the template
|
|
*/
|
|
#define SCSI_DEFAULT_HOST_BLOCKED 7
|
|
|
|
/*
|
|
* Pointer to the sysfs class properties for this host, NULL terminated.
|
|
*/
|
|
struct device_attribute **shost_attrs;
|
|
|
|
/*
|
|
* Pointer to the SCSI device properties for this host, NULL terminated.
|
|
*/
|
|
struct device_attribute **sdev_attrs;
|
|
|
|
/*
|
|
* Pointer to the SCSI device attribute groups for this host,
|
|
* NULL terminated.
|
|
*/
|
|
const struct attribute_group **sdev_groups;
|
|
|
|
/*
|
|
* Vendor Identifier associated with the host
|
|
*
|
|
* Note: When specifying vendor_id, be sure to read the
|
|
* Vendor Type and ID formatting requirements specified in
|
|
* scsi_netlink.h
|
|
*/
|
|
u64 vendor_id;
|
|
|
|
/*
|
|
* Additional per-command data allocated for the driver.
|
|
*/
|
|
unsigned int cmd_size;
|
|
struct scsi_host_cmd_pool *cmd_pool;
|
|
|
|
/* Delay for runtime autosuspend */
|
|
int rpm_autosuspend_delay;
|
|
|
|
ANDROID_KABI_RESERVE(1);
|
|
ANDROID_KABI_RESERVE(2);
|
|
ANDROID_KABI_RESERVE(3);
|
|
ANDROID_KABI_RESERVE(4);
|
|
};
|
|
|
|
/*
|
|
* Temporary #define for host lock push down. Can be removed when all
|
|
* drivers have been updated to take advantage of unlocked
|
|
* queuecommand.
|
|
*
|
|
*/
|
|
#define DEF_SCSI_QCMD(func_name) \
|
|
int func_name(struct Scsi_Host *shost, struct scsi_cmnd *cmd) \
|
|
{ \
|
|
unsigned long irq_flags; \
|
|
int rc; \
|
|
spin_lock_irqsave(shost->host_lock, irq_flags); \
|
|
rc = func_name##_lck (cmd, cmd->scsi_done); \
|
|
spin_unlock_irqrestore(shost->host_lock, irq_flags); \
|
|
return rc; \
|
|
}
|
|
|
|
|
|
/*
|
|
* shost state: If you alter this, you also need to alter scsi_sysfs.c
|
|
* (for the ascii descriptions) and the state model enforcer:
|
|
* scsi_host_set_state()
|
|
*/
|
|
enum scsi_host_state {
|
|
SHOST_CREATED = 1,
|
|
SHOST_RUNNING,
|
|
SHOST_CANCEL,
|
|
SHOST_DEL,
|
|
SHOST_RECOVERY,
|
|
SHOST_CANCEL_RECOVERY,
|
|
SHOST_DEL_RECOVERY,
|
|
};
|
|
|
|
struct Scsi_Host {
|
|
/*
|
|
* __devices is protected by the host_lock, but you should
|
|
* usually use scsi_device_lookup / shost_for_each_device
|
|
* to access it and don't care about locking yourself.
|
|
* In the rare case of being in irq context you can use
|
|
* their __ prefixed variants with the lock held. NEVER
|
|
* access this list directly from a driver.
|
|
*/
|
|
struct list_head __devices;
|
|
struct list_head __targets;
|
|
|
|
struct list_head starved_list;
|
|
|
|
spinlock_t default_lock;
|
|
spinlock_t *host_lock;
|
|
|
|
struct mutex scan_mutex;/* serialize scanning activity */
|
|
|
|
struct list_head eh_cmd_q;
|
|
struct task_struct * ehandler; /* Error recovery thread. */
|
|
struct completion * eh_action; /* Wait for specific actions on the
|
|
host. */
|
|
wait_queue_head_t host_wait;
|
|
struct scsi_host_template *hostt;
|
|
struct scsi_transport_template *transportt;
|
|
|
|
/* Area to keep a shared tag map */
|
|
struct blk_mq_tag_set tag_set;
|
|
|
|
atomic_t host_busy; /* commands actually active on low-level */
|
|
atomic_t host_blocked;
|
|
|
|
unsigned int host_failed; /* commands that failed.
|
|
protected by host_lock */
|
|
unsigned int host_eh_scheduled; /* EH scheduled without command */
|
|
|
|
unsigned int host_no; /* Used for IOCTL_GET_IDLUN, /proc/scsi et al. */
|
|
|
|
/* next two fields are used to bound the time spent in error handling */
|
|
int eh_deadline;
|
|
unsigned long last_reset;
|
|
|
|
|
|
/*
|
|
* These three parameters can be used to allow for wide scsi,
|
|
* and for host adapters that support multiple busses
|
|
* The last two should be set to 1 more than the actual max id
|
|
* or lun (e.g. 8 for SCSI parallel systems).
|
|
*/
|
|
unsigned int max_channel;
|
|
unsigned int max_id;
|
|
u64 max_lun;
|
|
|
|
/*
|
|
* This is a unique identifier that must be assigned so that we
|
|
* have some way of identifying each detected host adapter properly
|
|
* and uniquely. For hosts that do not support more than one card
|
|
* in the system at one time, this does not need to be set. It is
|
|
* initialized to 0 in scsi_register.
|
|
*/
|
|
unsigned int unique_id;
|
|
|
|
/*
|
|
* The maximum length of SCSI commands that this host can accept.
|
|
* Probably 12 for most host adapters, but could be 16 for others.
|
|
* or 260 if the driver supports variable length cdbs.
|
|
* For drivers that don't set this field, a value of 12 is
|
|
* assumed.
|
|
*/
|
|
unsigned short max_cmd_len;
|
|
|
|
int this_id;
|
|
int can_queue;
|
|
short cmd_per_lun;
|
|
short unsigned int sg_tablesize;
|
|
short unsigned int sg_prot_tablesize;
|
|
unsigned int max_sectors;
|
|
unsigned int max_segment_size;
|
|
unsigned long dma_boundary;
|
|
unsigned long virt_boundary_mask;
|
|
/*
|
|
* In scsi-mq mode, the number of hardware queues supported by the LLD.
|
|
*
|
|
* Note: it is assumed that each hardware queue has a queue depth of
|
|
* can_queue. In other words, the total queue depth per host
|
|
* is nr_hw_queues * can_queue.
|
|
*/
|
|
unsigned nr_hw_queues;
|
|
unsigned active_mode:2;
|
|
unsigned unchecked_isa_dma:1;
|
|
|
|
/*
|
|
* Host has requested that no further requests come through for the
|
|
* time being.
|
|
*/
|
|
unsigned host_self_blocked:1;
|
|
|
|
/*
|
|
* Host uses correct SCSI ordering not PC ordering. The bit is
|
|
* set for the minority of drivers whose authors actually read
|
|
* the spec ;).
|
|
*/
|
|
unsigned reverse_ordering:1;
|
|
|
|
/* Task mgmt function in progress */
|
|
unsigned tmf_in_progress:1;
|
|
|
|
/* Asynchronous scan in progress */
|
|
unsigned async_scan:1;
|
|
|
|
/* Don't resume host in EH */
|
|
unsigned eh_noresume:1;
|
|
|
|
/* The controller does not support WRITE SAME */
|
|
unsigned no_write_same:1;
|
|
|
|
unsigned use_cmd_list:1;
|
|
|
|
/* Host responded with short (<36 bytes) INQUIRY result */
|
|
unsigned short_inquiry:1;
|
|
|
|
/* The transport requires the LUN bits NOT to be stored in CDB[1] */
|
|
unsigned no_scsi2_lun_in_cdb:1;
|
|
|
|
/*
|
|
* Optional work queue to be utilized by the transport
|
|
*/
|
|
char work_q_name[20];
|
|
struct workqueue_struct *work_q;
|
|
|
|
/*
|
|
* Task management function work queue
|
|
*/
|
|
struct workqueue_struct *tmf_work_q;
|
|
|
|
/*
|
|
* Value host_blocked counts down from
|
|
*/
|
|
unsigned int max_host_blocked;
|
|
|
|
/* Protection Information */
|
|
unsigned int prot_capabilities;
|
|
unsigned char prot_guard_type;
|
|
|
|
/* legacy crap */
|
|
unsigned long base;
|
|
unsigned long io_port;
|
|
unsigned char n_io_port;
|
|
unsigned char dma_channel;
|
|
unsigned int irq;
|
|
|
|
|
|
enum scsi_host_state shost_state;
|
|
|
|
/* ldm bits */
|
|
struct device shost_gendev, shost_dev;
|
|
|
|
/*
|
|
* Points to the transport data (if any) which is allocated
|
|
* separately
|
|
*/
|
|
void *shost_data;
|
|
|
|
/*
|
|
* Points to the physical bus device we'd use to do DMA
|
|
* Needed just in case we have virtual hosts.
|
|
*/
|
|
struct device *dma_dev;
|
|
|
|
/*
|
|
* We should ensure that this is aligned, both for better performance
|
|
* and also because some compilers (m68k) don't automatically force
|
|
* alignment to a long boundary.
|
|
*/
|
|
unsigned long hostdata[0] /* Used for storage of host specific stuff */
|
|
__attribute__ ((aligned (sizeof(unsigned long))));
|
|
};
|
|
|
|
#define class_to_shost(d) \
|
|
container_of(d, struct Scsi_Host, shost_dev)
|
|
|
|
#define shost_printk(prefix, shost, fmt, a...) \
|
|
dev_printk(prefix, &(shost)->shost_gendev, fmt, ##a)
|
|
|
|
static inline void *shost_priv(struct Scsi_Host *shost)
|
|
{
|
|
return (void *)shost->hostdata;
|
|
}
|
|
|
|
int scsi_is_host_device(const struct device *);
|
|
|
|
static inline struct Scsi_Host *dev_to_shost(struct device *dev)
|
|
{
|
|
while (!scsi_is_host_device(dev)) {
|
|
if (!dev->parent)
|
|
return NULL;
|
|
dev = dev->parent;
|
|
}
|
|
return container_of(dev, struct Scsi_Host, shost_gendev);
|
|
}
|
|
|
|
static inline int scsi_host_in_recovery(struct Scsi_Host *shost)
|
|
{
|
|
return shost->shost_state == SHOST_RECOVERY ||
|
|
shost->shost_state == SHOST_CANCEL_RECOVERY ||
|
|
shost->shost_state == SHOST_DEL_RECOVERY ||
|
|
shost->tmf_in_progress;
|
|
}
|
|
|
|
extern int scsi_queue_work(struct Scsi_Host *, struct work_struct *);
|
|
extern void scsi_flush_work(struct Scsi_Host *);
|
|
|
|
extern struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *, int);
|
|
extern int __must_check scsi_add_host_with_dma(struct Scsi_Host *,
|
|
struct device *,
|
|
struct device *);
|
|
extern void scsi_scan_host(struct Scsi_Host *);
|
|
extern void scsi_rescan_device(struct device *);
|
|
extern void scsi_remove_host(struct Scsi_Host *);
|
|
extern struct Scsi_Host *scsi_host_get(struct Scsi_Host *);
|
|
extern int scsi_host_busy(struct Scsi_Host *shost);
|
|
extern void scsi_host_put(struct Scsi_Host *t);
|
|
extern struct Scsi_Host *scsi_host_lookup(unsigned int hostnum);
|
|
extern const char *scsi_host_state_name(enum scsi_host_state);
|
|
|
|
static inline int __must_check scsi_add_host(struct Scsi_Host *host,
|
|
struct device *dev)
|
|
{
|
|
return scsi_add_host_with_dma(host, dev, dev);
|
|
}
|
|
|
|
static inline struct device *scsi_get_device(struct Scsi_Host *shost)
|
|
{
|
|
return shost->shost_gendev.parent;
|
|
}
|
|
|
|
/**
|
|
* scsi_host_scan_allowed - Is scanning of this host allowed
|
|
* @shost: Pointer to Scsi_Host.
|
|
**/
|
|
static inline int scsi_host_scan_allowed(struct Scsi_Host *shost)
|
|
{
|
|
return shost->shost_state == SHOST_RUNNING ||
|
|
shost->shost_state == SHOST_RECOVERY;
|
|
}
|
|
|
|
extern void scsi_unblock_requests(struct Scsi_Host *);
|
|
extern void scsi_block_requests(struct Scsi_Host *);
|
|
|
|
struct class_container;
|
|
|
|
/*
|
|
* These two functions are used to allocate and free a pseudo device
|
|
* which will connect to the host adapter itself rather than any
|
|
* physical device. You must deallocate when you are done with the
|
|
* thing. This physical pseudo-device isn't real and won't be available
|
|
* from any high-level drivers.
|
|
*/
|
|
extern void scsi_free_host_dev(struct scsi_device *);
|
|
extern struct scsi_device *scsi_get_host_dev(struct Scsi_Host *);
|
|
|
|
/*
|
|
* DIF defines the exchange of protection information between
|
|
* initiator and SBC block device.
|
|
*
|
|
* DIX defines the exchange of protection information between OS and
|
|
* initiator.
|
|
*/
|
|
enum scsi_host_prot_capabilities {
|
|
SHOST_DIF_TYPE1_PROTECTION = 1 << 0, /* T10 DIF Type 1 */
|
|
SHOST_DIF_TYPE2_PROTECTION = 1 << 1, /* T10 DIF Type 2 */
|
|
SHOST_DIF_TYPE3_PROTECTION = 1 << 2, /* T10 DIF Type 3 */
|
|
|
|
SHOST_DIX_TYPE0_PROTECTION = 1 << 3, /* DIX between OS and HBA only */
|
|
SHOST_DIX_TYPE1_PROTECTION = 1 << 4, /* DIX with DIF Type 1 */
|
|
SHOST_DIX_TYPE2_PROTECTION = 1 << 5, /* DIX with DIF Type 2 */
|
|
SHOST_DIX_TYPE3_PROTECTION = 1 << 6, /* DIX with DIF Type 3 */
|
|
};
|
|
|
|
/*
|
|
* SCSI hosts which support the Data Integrity Extensions must
|
|
* indicate their capabilities by setting the prot_capabilities using
|
|
* this call.
|
|
*/
|
|
static inline void scsi_host_set_prot(struct Scsi_Host *shost, unsigned int mask)
|
|
{
|
|
shost->prot_capabilities = mask;
|
|
}
|
|
|
|
static inline unsigned int scsi_host_get_prot(struct Scsi_Host *shost)
|
|
{
|
|
return shost->prot_capabilities;
|
|
}
|
|
|
|
static inline int scsi_host_prot_dma(struct Scsi_Host *shost)
|
|
{
|
|
return shost->prot_capabilities >= SHOST_DIX_TYPE0_PROTECTION;
|
|
}
|
|
|
|
static inline unsigned int scsi_host_dif_capable(struct Scsi_Host *shost, unsigned int target_type)
|
|
{
|
|
static unsigned char cap[] = { 0,
|
|
SHOST_DIF_TYPE1_PROTECTION,
|
|
SHOST_DIF_TYPE2_PROTECTION,
|
|
SHOST_DIF_TYPE3_PROTECTION };
|
|
|
|
if (target_type >= ARRAY_SIZE(cap))
|
|
return 0;
|
|
|
|
return shost->prot_capabilities & cap[target_type] ? target_type : 0;
|
|
}
|
|
|
|
static inline unsigned int scsi_host_dix_capable(struct Scsi_Host *shost, unsigned int target_type)
|
|
{
|
|
#if defined(CONFIG_BLK_DEV_INTEGRITY)
|
|
static unsigned char cap[] = { SHOST_DIX_TYPE0_PROTECTION,
|
|
SHOST_DIX_TYPE1_PROTECTION,
|
|
SHOST_DIX_TYPE2_PROTECTION,
|
|
SHOST_DIX_TYPE3_PROTECTION };
|
|
|
|
if (target_type >= ARRAY_SIZE(cap))
|
|
return 0;
|
|
|
|
return shost->prot_capabilities & cap[target_type];
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* All DIX-capable initiators must support the T10-mandated CRC
|
|
* checksum. Controllers can optionally implement the IP checksum
|
|
* scheme which has much lower impact on system performance. Note
|
|
* that the main rationale for the checksum is to match integrity
|
|
* metadata with data. Detecting bit errors are a job for ECC memory
|
|
* and buses.
|
|
*/
|
|
|
|
enum scsi_host_guard_type {
|
|
SHOST_DIX_GUARD_CRC = 1 << 0,
|
|
SHOST_DIX_GUARD_IP = 1 << 1,
|
|
};
|
|
|
|
static inline void scsi_host_set_guard(struct Scsi_Host *shost, unsigned char type)
|
|
{
|
|
shost->prot_guard_type = type;
|
|
}
|
|
|
|
static inline unsigned char scsi_host_get_guard(struct Scsi_Host *shost)
|
|
{
|
|
return shost->prot_guard_type;
|
|
}
|
|
|
|
extern int scsi_host_set_state(struct Scsi_Host *, enum scsi_host_state);
|
|
|
|
#endif /* _SCSI_SCSI_HOST_H */
|