3dfb68c8ba
* 4.9/tmp-9ae2c67: Linux 4.9.40 alarmtimer: don't rate limit one-shot timers tracing: Fix kmemleak in instance_rmdir PM / Domains: defer dev_pm_domain_set() until genpd->attach_dev succeeds if present reiserfs: Don't clear SGID when inheriting ACLs spmi: Include OF based modalias in device uevent of: device: Export of_device_{get_modalias, uvent_modalias} to modules acpi/nfit: Fix memory corruption/Unregister mce decoder on failure ovl: fix random return value on mount hfsplus: Don't clear SGID when inheriting ACLs mlx5: Avoid that mlx5_ib_sg_to_klms() overflows the klms[] array drm/mst: Avoid processing partially received up/down message transactions drm/mst: Avoid dereferencing a NULL mstb in drm_dp_mst_handle_up_req() drm/mst: Fix error handling during MST sideband message reception RDMA/core: Initialize port_num in qp_attr ceph: fix race in concurrent readdir staging: lustre: ko2iblnd: check copy_from_iter/copy_to_iter return code staging: sm750fb: avoid conflicting vesafb staging: comedi: ni_mio_common: fix AO timer off-by-one regression staging: rtl8188eu: add TL-WN722N v2 support Revert "perf/core: Drop kernel samples even though :u is specified" perf annotate: Fix broken arrow at row 0 connecting jmp instruction to its target iser-target: Avoid isert_conn->cm_id dereference in isert_login_recv_done target: Fix COMPARE_AND_WRITE caw_sem leak during se_cmd quiesce udf: Fix deadlock between writeback and udf_setsize() NFS: only invalidate dentrys that are clearly invalid. sunrpc: use constant time memory comparison for mac IB/core: Namespace is mandatory input for address resolution IB/iser: Fix connection teardown race condition Input: i8042 - fix crash at boot time MIPS: Fix a typo: s/preset/present/ in r2-to-r6 emulation error message MIPS: Send SIGILL for R6 branches in `__compute_return_epc_for_insn' MIPS: Send SIGILL for linked branches in `__compute_return_epc_for_insn' MIPS: Rename `sigill_r6' to `sigill_r2r6' in `__compute_return_epc_for_insn' MIPS: Send SIGILL for BPOSGE32 in `__compute_return_epc_for_insn' MIPS: math-emu: Prevent wrong ISA mode instruction emulation MIPS: Fix unaligned PC interpretation in `compute_return_epc' MIPS: Actually decode JALX in `__compute_return_epc_for_insn' MIPS: Save static registers before sysmips MIPS: Fix MIPS I ISA /proc/cpuinfo reporting x86/ioapic: Pass the correct data to unmask_ioapic_irq() x86/acpi: Prevent out of bound access caused by broken ACPI tables Revert "ACPI / EC: Enable event freeze mode..." to fix a regression ACPI / EC: Drop EC noirq hooks to fix a regression ubifs: Don't leak kernel memory to the MTD MIPS: Negate error syscall return in trace MIPS: Fix mips_atomic_set() with EVA MIPS: Fix mips_atomic_set() retry condition ftrace: Fix uninitialized variable in match_records() nvme-rdma: remove race conditions from IB signalling vfio: New external user group/file match vfio: Fix group release deadlock ovl: drop CAP_SYS_RESOURCE from saved mounter's credentials drm/ttm: Fix use-after-free in ttm_bo_clean_mm f2fs: Don't clear SGID when inheriting ACLs f2fs: sanity check size of nat and sit cache xfs: Don't clear SGID when inheriting ACLs ipmi:ssif: Add missing unlock in error branch ipmi: use rcu lock around call to intf->handlers->sender() drm/radeon: Fix eDP for single-display iMac10,1 (v2) drm/radeon/ci: disable mclk switching for high refresh rates (v2) drm/amd/amdgpu: Return error if initiating read out of range on vram s390/syscalls: Fix out of bounds arguments access Raid5 should update rdev->sectors after reshape ext2: Don't clear SGID when inheriting ACLs libnvdimm: fix badblock range handling of ARS range libnvdimm, btt: fix btt_rw_page not returning errors cx88: Fix regression in initial video standard setting x86/xen: allow userspace access during hypercalls md: don't use flush_signals in userspace processes usb: renesas_usbhs: gadget: disable all eps when the driver stops usb: renesas_usbhs: fix usbhsc_resume() for !USBHSF_RUNTIME_PWCTRL USB: cdc-acm: add device-id for quirky printer usb: storage: return on error to avoid a null pointer dereference mxl111sf: Fix driver to use heap allocate buffers for USB messages xhci: Bad Ethernet performance plugged in ASM1042A host xhci: Fix NULL pointer dereference when cleaning up streams for removed host xhci: fix 20000ms port resume timeout ipvs: SNAT packet replies only for NATed connections PCI/PM: Restore the status of PCI devices across hibernation PCI: rockchip: Use normal register bank for config accessors PCI: Work around poweroff & suspend-to-RAM issue on Macbook Pro 11 af_key: Fix sadb_x_ipsecrequest parsing powerpc/mm/radix: Properly clear process table entry powerpc/asm: Mark cr0 as clobbered in mftb() powerpc: Fix emulation of mfocrf in emulate_step() powerpc: Fix emulation of mcrf in emulate_step() powerpc/64: Fix atomic64_inc_not_zero() to return an int powerpc/pseries: Fix passing of pp0 in updatepp() and updateboltedpp() xen/scsiback: Fix a TMR related use-after-free iscsi-target: Add login_keys_workaround attribute for non RFC initiators scsi: Add STARGET_CREATED_REMOVE state to scsi_target_state scsi: ses: do not add a device to an enclosure if enclosure_add_links() fails. PM / Domains: Fix unsafe iteration over modified list of domains PM / Domains: Fix unsafe iteration over modified list of domain providers PM / Domains: Fix unsafe iteration over modified list of device links ASoC: compress: Derive substream from stream based on direction igb: Explicitly select page 0 at initialization btrfs: Don't clear SGID when inheriting ACLs wlcore: fix 64K page support Bluetooth: use constant time memory comparison for secret values perf intel-pt: Clear FUP flag on error perf intel-pt: Use FUP always when scanning for an IP perf intel-pt: Ensure never to set 'last_ip' when packet 'count' is zero perf intel-pt: Fix last_ip usage perf intel-pt: Ensure IP is zero when state is INTEL_PT_STATE_NO_IP perf intel-pt: Fix missing stack clear perf intel-pt: Improve sample timestamp perf intel-pt: Move decoder error setting into one condition NFC: Add sockaddr length checks before accessing sa_family in bind handlers nfc: Fix the sockaddr length sanitization in llcp_sock_connect nfc: Ensure presence of required attributes in the activate_target handler NFC: nfcmrvl: fix firmware-management initialisation NFC: nfcmrvl: use nfc-device for firmware download NFC: nfcmrvl: do not use device-managed resources NFC: nfcmrvl_uart: add missing tty-device sanity check NFC: fix broken device allocation ath9k: fix an invalid pointer dereference in ath9k_rng_stop() ath9k: fix tx99 bus error ath9k: fix tx99 use after free thermal: cpu_cooling: Avoid accessing potentially freed structures thermal: max77620: fix device-node reference imbalance s5p-jpeg: don't return a random width/height dm mpath: cleanup -Wbool-operation warning in choose_pgpath() ir-core: fix gcc-7 warning on bool arithmetic disable new gcc-7.1.1 warnings for now Use %zu to print resid (size_t). ANDROID: keychord: Fix a slab out-of-bounds read. UPSTREAM: af_key: Fix sadb_x_ipsecrequest parsing ANDROID: lowmemorykiller: Add tgid to kill message Revert "ANDROID: proc: smaps: Allow smaps access for CAP_SYS_RESOURCE" 4.9.39 kvm: vmx: allow host to access guest MSR_IA32_BNDCFGS kvm: vmx: Check value written to IA32_BNDCFGS kvm: x86: Guest BNDCFGS requires guest MPX support kvm: vmx: Do not disable intercepts for BNDCFGS tracing: Use SOFTIRQ_OFFSET for softirq dectection for more accurate results PM / QoS: return -EINVAL for bogus strings PM / wakeirq: Convert to SRCU sched/topology: Fix overlapping sched_group_mask sched/topology: Optimize build_group_mask() sched/topology: Fix building of overlapping sched-groups sched/fair, cpumask: Export for_each_cpu_wrap() Revert "sched/core: Optimize SCHED_SMT" crypto: caam - fix signals handling crypto: caam - properly set IV after {en,de}crypt crypto: sha1-ssse3 - Disable avx2 crypto: atmel - only treat EBUSY as transient if backlog crypto: talitos - Extend max key length for SHA384/512-HMAC and AEAD mm: fix overflow check in expand_upwards() selftests/capabilities: Fix the test_execve test mnt: Make propagate_umount less slow for overlapping mount propagation trees mnt: In propgate_umount handle visiting mounts in any order mnt: In umount propagation reparent in a separate pass nvmem: core: fix leaks on registration errors rcu: Add memory barriers for NOCB leader wakeup vt: fix unchecked __put_user() in tioclinux ioctls ARM64: dts: marvell: armada37xx: Fix timer interrupt specifiers exec: Limit arg stack to at most 75% of _STK_LIM s390: reduce ELF_ET_DYN_BASE powerpc: move ELF_ET_DYN_BASE to 4GB / 4MB arm64: move ELF_ET_DYN_BASE to 4GB / 4MB arm: move ELF_ET_DYN_BASE to 4MB binfmt_elf: use ELF_ET_DYN_BASE only for PIE checkpatch: silence perl 5.26.0 unescaped left brace warnings fs/dcache.c: fix spin lockup issue on nlru->lock mm/list_lru.c: fix list_lru_count_node() to be race free kernel/extable.c: mark core_kernel_text notrace thp, mm: fix crash due race in MADV_FREE handling tools/lib/lockdep: Reduce MAX_LOCK_DEPTH to avoid overflowing lock_chain/: Depth parisc/mm: Ensure IRQs are off in switch_mm() parisc: DMA API: return error instead of BUG_ON for dma ops on non dma devs parisc: use compat_sys_keyctl() parisc: Report SIGSEGV instead of SIGBUS when running out of stack irqchip/gic-v3: Fix out-of-bound access in gic_set_affinity cfg80211: Check if NAN service ID is of expected size cfg80211: Check if PMKID attribute is of expected size cfg80211: Validate frequencies nested in NL80211_ATTR_SCAN_FREQUENCIES cfg80211: Define nla_policy for NL80211_ATTR_LOCAL_MESH_POWER_MODE sfc: don't read beyond unicast address list brcmfmac: Fix glom_skb leak in brcmf_sdiod_recv_chain brcmfmac: Fix a memory leak in error handling path in 'brcmf_cfg80211_attach' brcmfmac: fix possible buffer overflow in brcmf_cfg80211_mgmt_tx() rds: tcp: use sock_create_lite() to create the accept socket vrf: fix bug_on triggered by rx when destroying a vrf net: ipv6: Compare lwstate in detecting duplicate nexthops net: core: Fix slab-out-of-bounds in netdev_stats_to_stats64 vxlan: fix hlist corruption ipv6: dad: don't remove dynamic addresses if link is down net/mlx5e: Fix TX carrier errors report in get stats ndo liquidio: fix bug in soft reset failure detection net/mlx5: Cancel delayed recovery work when unloading the driver net: handle NAPI_GRO_FREE_STOLEN_HEAD case also in napi_frags_finish() bpf: prevent leaking pointer via xadd on unpriviledged rocker: move dereference before free bridge: mdb: fix leak on complete_info ptr on fail path net: prevent sign extension in dev_get_stats() tcp: reset sk_rx_dst in tcp_disconnect() net: dp83640: Avoid NULL pointer dereference. ipv6: avoid unregistering inet6_dev for loopback net/phy: micrel: configure intterupts after autoneg workaround net: sched: Fix one possible panic when no destroy callback net_sched: fix error recovery at qdisc creation xen-netfront: Rework the fix for Rx stall during OOM and network stress ANDROID: android-verity: mark dev as rw for linear target ANDROID: sdcardfs: Remove unnecessary lock ANDROID: binder: don't check prio permissions on restore. Add BINDER_GET_NODE_DEBUG_INFO ioctl ANDROID: binder: add RT inheritance flag to node. ANDROID: binder: improve priority inheritance. ANDROID: binder: add min sched_policy to node. ANDROID: binder: add support for RT prio inheritance. ANDROID: binder: push new transactions to waiting threads. ANDROID: binder: remove proc waitqueue Conflicts: drivers/staging/android/lowmemorykiller.c Change-Id: I2954e47d7e4fc74cf9bb5033fc151537958b78af Signed-off-by: Kyle Yan <kyan@codeaurora.org>
566 lines
20 KiB
C
566 lines
20 KiB
C
#ifndef _SCSI_SCSI_DEVICE_H
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#define _SCSI_SCSI_DEVICE_H
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/blkdev.h>
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#include <scsi/scsi.h>
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#include <linux/atomic.h>
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struct device;
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struct request_queue;
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struct scsi_cmnd;
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struct scsi_lun;
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struct scsi_sense_hdr;
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struct scsi_mode_data {
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__u32 length;
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__u16 block_descriptor_length;
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__u8 medium_type;
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__u8 device_specific;
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__u8 header_length;
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__u8 longlba:1;
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};
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/*
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* sdev state: If you alter this, you also need to alter scsi_sysfs.c
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* (for the ascii descriptions) and the state model enforcer:
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* scsi_lib:scsi_device_set_state().
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*/
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enum scsi_device_state {
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SDEV_CREATED = 1, /* device created but not added to sysfs
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* Only internal commands allowed (for inq) */
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SDEV_RUNNING, /* device properly configured
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* All commands allowed */
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SDEV_CANCEL, /* beginning to delete device
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* Only error handler commands allowed */
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SDEV_DEL, /* device deleted
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* no commands allowed */
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SDEV_QUIESCE, /* Device quiescent. No block commands
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* will be accepted, only specials (which
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* originate in the mid-layer) */
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SDEV_OFFLINE, /* Device offlined (by error handling or
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* user request */
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SDEV_TRANSPORT_OFFLINE, /* Offlined by transport class error handler */
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SDEV_BLOCK, /* Device blocked by scsi lld. No
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* scsi commands from user or midlayer
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* should be issued to the scsi
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* lld. */
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SDEV_CREATED_BLOCK, /* same as above but for created devices */
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};
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enum scsi_scan_mode {
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SCSI_SCAN_INITIAL = 0,
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SCSI_SCAN_RESCAN,
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SCSI_SCAN_MANUAL,
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};
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enum scsi_device_event {
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SDEV_EVT_MEDIA_CHANGE = 1, /* media has changed */
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SDEV_EVT_INQUIRY_CHANGE_REPORTED, /* 3F 03 UA reported */
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SDEV_EVT_CAPACITY_CHANGE_REPORTED, /* 2A 09 UA reported */
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SDEV_EVT_SOFT_THRESHOLD_REACHED_REPORTED, /* 38 07 UA reported */
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SDEV_EVT_MODE_PARAMETER_CHANGE_REPORTED, /* 2A 01 UA reported */
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SDEV_EVT_LUN_CHANGE_REPORTED, /* 3F 0E UA reported */
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SDEV_EVT_ALUA_STATE_CHANGE_REPORTED, /* 2A 06 UA reported */
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SDEV_EVT_FIRST = SDEV_EVT_MEDIA_CHANGE,
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SDEV_EVT_LAST = SDEV_EVT_ALUA_STATE_CHANGE_REPORTED,
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SDEV_EVT_MAXBITS = SDEV_EVT_LAST + 1
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};
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struct scsi_event {
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enum scsi_device_event evt_type;
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struct list_head node;
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/* put union of data structures, for non-simple event types,
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* here
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*/
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};
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struct scsi_device {
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struct Scsi_Host *host;
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struct request_queue *request_queue;
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/* the next two are protected by the host->host_lock */
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struct list_head siblings; /* list of all devices on this host */
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struct list_head same_target_siblings; /* just the devices sharing same target id */
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atomic_t device_busy; /* commands actually active on LLDD */
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atomic_t device_blocked; /* Device returned QUEUE_FULL. */
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spinlock_t list_lock;
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struct list_head cmd_list; /* queue of in use SCSI Command structures */
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struct list_head starved_entry;
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unsigned short queue_depth; /* How deep of a queue we want */
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unsigned short max_queue_depth; /* max queue depth */
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unsigned short last_queue_full_depth; /* These two are used by */
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unsigned short last_queue_full_count; /* scsi_track_queue_full() */
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unsigned long last_queue_full_time; /* last queue full time */
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unsigned long queue_ramp_up_period; /* ramp up period in jiffies */
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#define SCSI_DEFAULT_RAMP_UP_PERIOD (120 * HZ)
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unsigned long last_queue_ramp_up; /* last queue ramp up time */
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unsigned int id, channel;
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u64 lun;
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unsigned int manufacturer; /* Manufacturer of device, for using
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* vendor-specific cmd's */
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unsigned sector_size; /* size in bytes */
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void *hostdata; /* available to low-level driver */
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char type;
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char scsi_level;
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char inq_periph_qual; /* PQ from INQUIRY data */
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struct mutex inquiry_mutex;
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unsigned char inquiry_len; /* valid bytes in 'inquiry' */
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unsigned char * inquiry; /* INQUIRY response data */
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const char * vendor; /* [back_compat] point into 'inquiry' ... */
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const char * model; /* ... after scan; point to static string */
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const char * rev; /* ... "nullnullnullnull" before scan */
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#define SCSI_VPD_PG_LEN 255
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int vpd_pg83_len;
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unsigned char __rcu *vpd_pg83;
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int vpd_pg80_len;
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unsigned char __rcu *vpd_pg80;
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unsigned char current_tag; /* current tag */
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struct scsi_target *sdev_target; /* used only for single_lun */
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unsigned int sdev_bflags; /* black/white flags as also found in
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* scsi_devinfo.[hc]. For now used only to
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* pass settings from slave_alloc to scsi
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* core. */
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unsigned int eh_timeout; /* Error handling timeout */
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unsigned removable:1;
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unsigned changed:1; /* Data invalid due to media change */
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unsigned busy:1; /* Used to prevent races */
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unsigned lockable:1; /* Able to prevent media removal */
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unsigned locked:1; /* Media removal disabled */
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unsigned borken:1; /* Tell the Seagate driver to be
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* painfully slow on this device */
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unsigned disconnect:1; /* can disconnect */
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unsigned soft_reset:1; /* Uses soft reset option */
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unsigned sdtr:1; /* Device supports SDTR messages */
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unsigned wdtr:1; /* Device supports WDTR messages */
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unsigned ppr:1; /* Device supports PPR messages */
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unsigned tagged_supported:1; /* Supports SCSI-II tagged queuing */
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unsigned simple_tags:1; /* simple queue tag messages are enabled */
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unsigned was_reset:1; /* There was a bus reset on the bus for
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* this device */
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unsigned expecting_cc_ua:1; /* Expecting a CHECK_CONDITION/UNIT_ATTN
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* because we did a bus reset. */
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unsigned use_10_for_rw:1; /* first try 10-byte read / write */
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unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */
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unsigned no_report_opcodes:1; /* no REPORT SUPPORTED OPERATION CODES */
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unsigned no_write_same:1; /* no WRITE SAME command */
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unsigned use_16_for_rw:1; /* Use read/write(16) over read/write(10) */
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unsigned skip_ms_page_8:1; /* do not use MODE SENSE page 0x08 */
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unsigned skip_ms_page_3f:1; /* do not use MODE SENSE page 0x3f */
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unsigned skip_vpd_pages:1; /* do not read VPD pages */
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unsigned try_vpd_pages:1; /* attempt to read VPD pages */
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unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */
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unsigned no_start_on_add:1; /* do not issue start on add */
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unsigned allow_restart:1; /* issue START_UNIT in error handler */
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unsigned manage_start_stop:1; /* Let HLD (sd) manage start/stop */
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unsigned start_stop_pwr_cond:1; /* Set power cond. in START_STOP_UNIT */
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unsigned no_uld_attach:1; /* disable connecting to upper level drivers */
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unsigned select_no_atn:1;
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unsigned fix_capacity:1; /* READ_CAPACITY is too high by 1 */
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unsigned guess_capacity:1; /* READ_CAPACITY might be too high by 1 */
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unsigned retry_hwerror:1; /* Retry HARDWARE_ERROR */
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unsigned last_sector_bug:1; /* do not use multisector accesses on
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SD_LAST_BUGGY_SECTORS */
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unsigned no_read_disc_info:1; /* Avoid READ_DISC_INFO cmds */
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unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */
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unsigned try_rc_10_first:1; /* Try READ_CAPACACITY_10 first */
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unsigned is_visible:1; /* is the device visible in sysfs */
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unsigned wce_default_on:1; /* Cache is ON by default */
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unsigned no_dif:1; /* T10 PI (DIF) should be disabled */
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unsigned broken_fua:1; /* Don't set FUA bit */
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unsigned lun_in_cdb:1; /* Store LUN bits in CDB[1] */
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unsigned synchronous_alua:1; /* Synchronous ALUA commands */
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unsigned use_rpm_auto:1; /* Enable runtime PM auto suspend */
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#define SCSI_DEFAULT_AUTOSUSPEND_DELAY -1
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int autosuspend_delay;
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/* If non-zero, use timeout (in jiffies) for all commands */
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unsigned int timeout_override;
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atomic_t disk_events_disable_depth; /* disable depth for disk events */
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DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */
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DECLARE_BITMAP(pending_events, SDEV_EVT_MAXBITS); /* pending events */
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struct list_head event_list; /* asserted events */
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struct work_struct event_work;
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unsigned int max_device_blocked; /* what device_blocked counts down from */
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#define SCSI_DEFAULT_DEVICE_BLOCKED 3
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atomic_t iorequest_cnt;
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atomic_t iodone_cnt;
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atomic_t ioerr_cnt;
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struct device sdev_gendev,
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sdev_dev;
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struct execute_work ew; /* used to get process context on put */
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struct work_struct requeue_work;
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struct scsi_device_handler *handler;
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void *handler_data;
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unsigned char access_state;
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enum scsi_device_state sdev_state;
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unsigned long sdev_data[0];
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} __attribute__((aligned(sizeof(unsigned long))));
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#define to_scsi_device(d) \
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container_of(d, struct scsi_device, sdev_gendev)
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#define class_to_sdev(d) \
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container_of(d, struct scsi_device, sdev_dev)
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#define transport_class_to_sdev(class_dev) \
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to_scsi_device(class_dev->parent)
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#define sdev_dbg(sdev, fmt, a...) \
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dev_dbg(&(sdev)->sdev_gendev, fmt, ##a)
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/*
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* like scmd_printk, but the device name is passed in
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* as a string pointer
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*/
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__printf(4, 5) void
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sdev_prefix_printk(const char *, const struct scsi_device *, const char *,
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const char *, ...);
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#define sdev_printk(l, sdev, fmt, a...) \
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sdev_prefix_printk(l, sdev, NULL, fmt, ##a)
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__printf(3, 4) void
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scmd_printk(const char *, const struct scsi_cmnd *, const char *, ...);
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#define scmd_dbg(scmd, fmt, a...) \
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do { \
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if ((scmd)->request->rq_disk) \
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sdev_dbg((scmd)->device, "[%s] " fmt, \
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(scmd)->request->rq_disk->disk_name, ##a);\
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else \
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sdev_dbg((scmd)->device, fmt, ##a); \
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} while (0)
|
|
|
|
enum scsi_target_state {
|
|
STARGET_CREATED = 1,
|
|
STARGET_RUNNING,
|
|
STARGET_REMOVE,
|
|
STARGET_CREATED_REMOVE,
|
|
STARGET_DEL,
|
|
};
|
|
|
|
/*
|
|
* scsi_target: representation of a scsi target, for now, this is only
|
|
* used for single_lun devices. If no one has active IO to the target,
|
|
* starget_sdev_user is NULL, else it points to the active sdev.
|
|
*/
|
|
struct scsi_target {
|
|
struct scsi_device *starget_sdev_user;
|
|
struct list_head siblings;
|
|
struct list_head devices;
|
|
struct device dev;
|
|
struct kref reap_ref; /* last put renders target invisible */
|
|
unsigned int channel;
|
|
unsigned int id; /* target id ... replace
|
|
* scsi_device.id eventually */
|
|
unsigned int create:1; /* signal that it needs to be added */
|
|
unsigned int single_lun:1; /* Indicates we should only
|
|
* allow I/O to one of the luns
|
|
* for the device at a time. */
|
|
unsigned int pdt_1f_for_no_lun:1; /* PDT = 0x1f
|
|
* means no lun present. */
|
|
unsigned int no_report_luns:1; /* Don't use
|
|
* REPORT LUNS for scanning. */
|
|
unsigned int expecting_lun_change:1; /* A device has reported
|
|
* a 3F/0E UA, other devices on
|
|
* the same target will also. */
|
|
/* commands actually active on LLD. */
|
|
atomic_t target_busy;
|
|
atomic_t target_blocked;
|
|
|
|
/*
|
|
* LLDs should set this in the slave_alloc host template callout.
|
|
* If set to zero then there is not limit.
|
|
*/
|
|
unsigned int can_queue;
|
|
unsigned int max_target_blocked;
|
|
#define SCSI_DEFAULT_TARGET_BLOCKED 3
|
|
|
|
char scsi_level;
|
|
enum scsi_target_state state;
|
|
void *hostdata; /* available to low-level driver */
|
|
unsigned long starget_data[0]; /* for the transport */
|
|
/* starget_data must be the last element!!!! */
|
|
} __attribute__((aligned(sizeof(unsigned long))));
|
|
|
|
#define to_scsi_target(d) container_of(d, struct scsi_target, dev)
|
|
static inline struct scsi_target *scsi_target(struct scsi_device *sdev)
|
|
{
|
|
return to_scsi_target(sdev->sdev_gendev.parent);
|
|
}
|
|
#define transport_class_to_starget(class_dev) \
|
|
to_scsi_target(class_dev->parent)
|
|
|
|
#define starget_printk(prefix, starget, fmt, a...) \
|
|
dev_printk(prefix, &(starget)->dev, fmt, ##a)
|
|
|
|
extern struct scsi_device *__scsi_add_device(struct Scsi_Host *,
|
|
uint, uint, u64, void *hostdata);
|
|
extern int scsi_add_device(struct Scsi_Host *host, uint channel,
|
|
uint target, u64 lun);
|
|
extern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh);
|
|
extern void scsi_remove_device(struct scsi_device *);
|
|
extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh);
|
|
void scsi_attach_vpd(struct scsi_device *sdev);
|
|
|
|
extern struct scsi_device *scsi_device_from_queue(struct request_queue *q);
|
|
extern int scsi_device_get(struct scsi_device *);
|
|
extern void scsi_device_put(struct scsi_device *);
|
|
extern struct scsi_device *scsi_device_lookup(struct Scsi_Host *,
|
|
uint, uint, u64);
|
|
extern struct scsi_device *__scsi_device_lookup(struct Scsi_Host *,
|
|
uint, uint, u64);
|
|
extern struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *,
|
|
u64);
|
|
extern struct scsi_device *__scsi_device_lookup_by_target(struct scsi_target *,
|
|
u64);
|
|
extern void starget_for_each_device(struct scsi_target *, void *,
|
|
void (*fn)(struct scsi_device *, void *));
|
|
extern void __starget_for_each_device(struct scsi_target *, void *,
|
|
void (*fn)(struct scsi_device *,
|
|
void *));
|
|
|
|
/* only exposed to implement shost_for_each_device */
|
|
extern struct scsi_device *__scsi_iterate_devices(struct Scsi_Host *,
|
|
struct scsi_device *);
|
|
|
|
/**
|
|
* shost_for_each_device - iterate over all devices of a host
|
|
* @sdev: the &struct scsi_device to use as a cursor
|
|
* @shost: the &struct scsi_host to iterate over
|
|
*
|
|
* Iterator that returns each device attached to @shost. This loop
|
|
* takes a reference on each device and releases it at the end. If
|
|
* you break out of the loop, you must call scsi_device_put(sdev).
|
|
*/
|
|
#define shost_for_each_device(sdev, shost) \
|
|
for ((sdev) = __scsi_iterate_devices((shost), NULL); \
|
|
(sdev); \
|
|
(sdev) = __scsi_iterate_devices((shost), (sdev)))
|
|
|
|
/**
|
|
* __shost_for_each_device - iterate over all devices of a host (UNLOCKED)
|
|
* @sdev: the &struct scsi_device to use as a cursor
|
|
* @shost: the &struct scsi_host to iterate over
|
|
*
|
|
* Iterator that returns each device attached to @shost. It does _not_
|
|
* take a reference on the scsi_device, so the whole loop must be
|
|
* protected by shost->host_lock.
|
|
*
|
|
* Note: The only reason to use this is because you need to access the
|
|
* device list in interrupt context. Otherwise you really want to use
|
|
* shost_for_each_device instead.
|
|
*/
|
|
#define __shost_for_each_device(sdev, shost) \
|
|
list_for_each_entry((sdev), &((shost)->__devices), siblings)
|
|
|
|
extern int scsi_change_queue_depth(struct scsi_device *, int);
|
|
extern int scsi_track_queue_full(struct scsi_device *, int);
|
|
|
|
extern int scsi_set_medium_removal(struct scsi_device *, char);
|
|
|
|
extern int scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage,
|
|
unsigned char *buffer, int len, int timeout,
|
|
int retries, struct scsi_mode_data *data,
|
|
struct scsi_sense_hdr *);
|
|
extern int scsi_mode_select(struct scsi_device *sdev, int pf, int sp,
|
|
int modepage, unsigned char *buffer, int len,
|
|
int timeout, int retries,
|
|
struct scsi_mode_data *data,
|
|
struct scsi_sense_hdr *);
|
|
extern int scsi_test_unit_ready(struct scsi_device *sdev, int timeout,
|
|
int retries, struct scsi_sense_hdr *sshdr);
|
|
extern int scsi_get_vpd_page(struct scsi_device *, u8 page, unsigned char *buf,
|
|
int buf_len);
|
|
extern int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer,
|
|
unsigned int len, unsigned char opcode);
|
|
extern int scsi_device_set_state(struct scsi_device *sdev,
|
|
enum scsi_device_state state);
|
|
extern struct scsi_event *sdev_evt_alloc(enum scsi_device_event evt_type,
|
|
gfp_t gfpflags);
|
|
extern void sdev_evt_send(struct scsi_device *sdev, struct scsi_event *evt);
|
|
extern void sdev_evt_send_simple(struct scsi_device *sdev,
|
|
enum scsi_device_event evt_type, gfp_t gfpflags);
|
|
extern int scsi_device_quiesce(struct scsi_device *sdev);
|
|
extern void scsi_device_resume(struct scsi_device *sdev);
|
|
extern void scsi_target_quiesce(struct scsi_target *);
|
|
extern void scsi_target_resume(struct scsi_target *);
|
|
extern void scsi_scan_target(struct device *parent, unsigned int channel,
|
|
unsigned int id, u64 lun,
|
|
enum scsi_scan_mode rescan);
|
|
extern void scsi_target_reap(struct scsi_target *);
|
|
extern void scsi_target_block(struct device *);
|
|
extern void scsi_target_unblock(struct device *, enum scsi_device_state);
|
|
extern void scsi_remove_target(struct device *);
|
|
extern const char *scsi_device_state_name(enum scsi_device_state);
|
|
extern int scsi_is_sdev_device(const struct device *);
|
|
extern int scsi_is_target_device(const struct device *);
|
|
extern void scsi_sanitize_inquiry_string(unsigned char *s, int len);
|
|
extern int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
|
|
int data_direction, void *buffer, unsigned bufflen,
|
|
unsigned char *sense, int timeout, int retries,
|
|
u64 flags, int *resid);
|
|
extern int scsi_execute_req_flags(struct scsi_device *sdev,
|
|
const unsigned char *cmd, int data_direction, void *buffer,
|
|
unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout,
|
|
int retries, int *resid, u64 flags);
|
|
static inline int scsi_execute_req(struct scsi_device *sdev,
|
|
const unsigned char *cmd, int data_direction, void *buffer,
|
|
unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout,
|
|
int retries, int *resid)
|
|
{
|
|
return scsi_execute_req_flags(sdev, cmd, data_direction, buffer,
|
|
bufflen, sshdr, timeout, retries, resid, 0);
|
|
}
|
|
extern void sdev_disable_disk_events(struct scsi_device *sdev);
|
|
extern void sdev_enable_disk_events(struct scsi_device *sdev);
|
|
extern int scsi_vpd_lun_id(struct scsi_device *, char *, size_t);
|
|
extern int scsi_vpd_tpg_id(struct scsi_device *, int *);
|
|
extern void scsi_set_cmd_timeout_override(struct scsi_device *sdev,
|
|
unsigned int timeout);
|
|
|
|
#ifdef CONFIG_PM
|
|
extern int scsi_autopm_get_device(struct scsi_device *);
|
|
extern void scsi_autopm_put_device(struct scsi_device *);
|
|
#else
|
|
static inline int scsi_autopm_get_device(struct scsi_device *d) { return 0; }
|
|
static inline void scsi_autopm_put_device(struct scsi_device *d) {}
|
|
#endif /* CONFIG_PM */
|
|
|
|
static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev)
|
|
{
|
|
return device_reprobe(&sdev->sdev_gendev);
|
|
}
|
|
|
|
static inline unsigned int sdev_channel(struct scsi_device *sdev)
|
|
{
|
|
return sdev->channel;
|
|
}
|
|
|
|
static inline unsigned int sdev_id(struct scsi_device *sdev)
|
|
{
|
|
return sdev->id;
|
|
}
|
|
|
|
#define scmd_id(scmd) sdev_id((scmd)->device)
|
|
#define scmd_channel(scmd) sdev_channel((scmd)->device)
|
|
|
|
/*
|
|
* checks for positions of the SCSI state machine
|
|
*/
|
|
static inline int scsi_device_online(struct scsi_device *sdev)
|
|
{
|
|
return (sdev->sdev_state != SDEV_OFFLINE &&
|
|
sdev->sdev_state != SDEV_TRANSPORT_OFFLINE &&
|
|
sdev->sdev_state != SDEV_DEL);
|
|
}
|
|
static inline int scsi_device_blocked(struct scsi_device *sdev)
|
|
{
|
|
return sdev->sdev_state == SDEV_BLOCK ||
|
|
sdev->sdev_state == SDEV_CREATED_BLOCK;
|
|
}
|
|
static inline int scsi_device_created(struct scsi_device *sdev)
|
|
{
|
|
return sdev->sdev_state == SDEV_CREATED ||
|
|
sdev->sdev_state == SDEV_CREATED_BLOCK;
|
|
}
|
|
|
|
/* accessor functions for the SCSI parameters */
|
|
static inline int scsi_device_sync(struct scsi_device *sdev)
|
|
{
|
|
return sdev->sdtr;
|
|
}
|
|
static inline int scsi_device_wide(struct scsi_device *sdev)
|
|
{
|
|
return sdev->wdtr;
|
|
}
|
|
static inline int scsi_device_dt(struct scsi_device *sdev)
|
|
{
|
|
return sdev->ppr;
|
|
}
|
|
static inline int scsi_device_dt_only(struct scsi_device *sdev)
|
|
{
|
|
if (sdev->inquiry_len < 57)
|
|
return 0;
|
|
return (sdev->inquiry[56] & 0x0c) == 0x04;
|
|
}
|
|
static inline int scsi_device_ius(struct scsi_device *sdev)
|
|
{
|
|
if (sdev->inquiry_len < 57)
|
|
return 0;
|
|
return sdev->inquiry[56] & 0x01;
|
|
}
|
|
static inline int scsi_device_qas(struct scsi_device *sdev)
|
|
{
|
|
if (sdev->inquiry_len < 57)
|
|
return 0;
|
|
return sdev->inquiry[56] & 0x02;
|
|
}
|
|
static inline int scsi_device_enclosure(struct scsi_device *sdev)
|
|
{
|
|
return sdev->inquiry ? (sdev->inquiry[6] & (1<<6)) : 1;
|
|
}
|
|
|
|
static inline int scsi_device_protection(struct scsi_device *sdev)
|
|
{
|
|
if (sdev->no_dif)
|
|
return 0;
|
|
|
|
return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0);
|
|
}
|
|
|
|
static inline int scsi_device_tpgs(struct scsi_device *sdev)
|
|
{
|
|
return sdev->inquiry ? (sdev->inquiry[5] >> 4) & 0x3 : 0;
|
|
}
|
|
|
|
/**
|
|
* scsi_device_supports_vpd - test if a device supports VPD pages
|
|
* @sdev: the &struct scsi_device to test
|
|
*
|
|
* If the 'try_vpd_pages' flag is set it takes precedence.
|
|
* Otherwise we will assume VPD pages are supported if the
|
|
* SCSI level is at least SPC-3 and 'skip_vpd_pages' is not set.
|
|
*/
|
|
static inline int scsi_device_supports_vpd(struct scsi_device *sdev)
|
|
{
|
|
/* Attempt VPD inquiry if the device blacklist explicitly calls
|
|
* for it.
|
|
*/
|
|
if (sdev->try_vpd_pages)
|
|
return 1;
|
|
/*
|
|
* Although VPD inquiries can go to SCSI-2 type devices,
|
|
* some USB ones crash on receiving them, and the pages
|
|
* we currently ask for are mandatory for SPC-2 and beyond
|
|
*/
|
|
if (sdev->scsi_level >= SCSI_SPC_2 && !sdev->skip_vpd_pages)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
#define MODULE_ALIAS_SCSI_DEVICE(type) \
|
|
MODULE_ALIAS("scsi:t-" __stringify(type) "*")
|
|
#define SCSI_DEVICE_MODALIAS_FMT "scsi:t-0x%02x"
|
|
|
|
#endif /* _SCSI_SCSI_DEVICE_H */
|