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path: root/drivers/scsi/mvsas
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* [SCSI] sas: unify the pointlessly separated enums sas_dev_type and ↵James Bottomley2013-05-10
| | | | | | | | | | | | | | | | | | sas_device_type These enums have been separate since the dawn of SAS, mainly because the latter is a procotol only enum and the former includes additional state for libsas. The dichotomy causes endless confusion about which one you should use where and leads to pointless warnings like this: drivers/scsi/mvsas/mv_sas.c: In function 'mvs_update_phyinfo': drivers/scsi/mvsas/mv_sas.c:1162:34: warning: comparison between 'enum sas_device_type' and 'enum sas_dev_type' [-Wenum-compare] Fix by eliminating one of them. The one kept is effectively the sas.h one, but call it sas_device_type and make sure the enums are all properly namespaced with the SAS_ prefix. Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] mvsas: Use PCI_VENDOR_ID_MARVELL_EXT for 0x1b4bMyron Stowe2013-04-15
| | | | | | | | With the 0x1b4b vendor ID #define in place, convert hard-coded ID values. Signed-off-by: Myron Stowe <myron.stowe@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: James Bottomley <James.Bottomley@hansenpartnership.com>
* [SCSI] mvsas: fixed timeout issue when removing moduleXiangliang Yu2013-02-22
| | | | | | | | | Root cause is libsas will clear asd_sas_port phy_mask value in sas_port_deform after triggering destruct workqueue, but the workqueue will send sync cmd and still need phy_mask value. Now, mvsas using asd_sas_phy setting instead of asd_sas_port setting. Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* Drivers: scsi: remove __dev* attributes.Greg Kroah-Hartman2013-01-03
| | | | | | | | | | | | | | | | CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Adam Radford <linuxraid@lsi.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* [SCSI] mvsas: fix undefined bit shiftXi Wang2012-11-30
| | | | | | | | | | | | | | | | | | | | | The macro bit(n) is defined as ((u32)1 << n), and thus it doesn't work with n >= 32, such as in mvs_94xx_assign_reg_set(): if (i >= 32) { mvi->sata_reg_set |= bit(i); ... } The shift ((u32)1 << n) with n >= 32 also leads to undefined behavior. The result varies depending on the architecture. This patch changes bit(n) to do a 64-bit shift. It also simplifies mv_ffc64() using __ffs64(), since invoking ffz() with ~0 is undefined. Signed-off-by: Xi Wang <xi.wang@gmail.com> Acked-by: Xiangliang Yu <yuxiangl@marvell.com> Cc: stable@vger.kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] mvsas: Fix oops when ata commond timeout.Jianpeng Ma2012-09-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel message follows: [ 511.712011] sd 11:0:0:0: [sdf] command ffff8800a4e81400 timed out [ 511.712022] sas: Enter sas_scsi_recover_host busy: 1 failed: 1 [ 511.712024] sas: trying to find task 0xffff8800a4d24c80 [ 511.712026] sas: sas_scsi_find_task: aborting task 0xffff8800a4d24c80 [ 511.712029] drivers/scsi/mvsas/mv_sas.c 1631:mvs_abort_task() mvi=ffff8800b5300000 task=ffff8800a4d24c80 slot=ffff8800b5325038 slot_idx=x0 [ 511.712035] BUG: unable to handle kernel NULL pointer dereference at 0000000000000058 [ 511.712040] IP: [<ffffffff815f8c0c>] _raw_spin_lock_irqsave+0xc/0x30 [ 511.712047] PGD 0 [ 511.712049] Oops: 0002 [#1] SMP [ 511.712052] Modules linked in: mvsas libsas scsi_transport_sas raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx [last unloaded: mvsas] [ 511.712062] CPU 3 [ 511.712066] Pid: 7322, comm: scsi_eh_11 Not tainted 3.5.0+ #106 To Be Filled By O.E.M. To Be Filled By O.E.M./To be filled by O.E.M. [ 511.712068] RIP: 0010:[<ffffffff815f8c0c>] [<ffffffff815f8c0c>] _raw_spin_lock_irqsave+0xc/0x30 [ 511.712073] RSP: 0018:ffff880098d3bcb0 EFLAGS: 00010086 [ 511.712074] RAX: 0000000000000286 RBX: 0000000000000058 RCX: 00000000000000c3 [ 511.712076] RDX: 0000000000000100 RSI: 0000000000000046 RDI: 0000000000000058 [ 511.712078] RBP: ffff880098d3bcb0 R08: 000000000000000a R09: 0000000000000000 [ 511.712080] R10: 00000000000004e8 R11: 00000000000004e7 R12: ffff8800a4d24c80 [ 511.712082] R13: 0000000000000050 R14: ffff8800b5325038 R15: ffff8800a4eafe00 [ 511.712084] FS: 0000000000000000(0000) GS:ffff8800bdb80000(0000) knlGS:0000000000000000 [ 511.712086] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 511.712088] CR2: 0000000000000058 CR3: 00000000a4ce6000 CR4: 00000000000407e0 [ 511.712090] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 511.712091] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 511.712093] Process scsi_eh_11 (pid: 7322, threadinfo ffff880098d3a000, task ffff8800a61dde40) [ 511.712095] Stack: [ 511.712096] ffff880098d3bce0 ffffffff81060683 ffff880000000000 0000000000000000 [ 511.712099] ffff8800a4d24c80 ffff8800b5300000 ffff880098d3bcf0 ffffffffa0076a88 [ 511.712102] ffff880098d3bd50 ffffffffa0079bb5 ffff880000000000 ffff880000000018 [ 511.712106] Call Trace: [ 511.712110] [<ffffffff81060683>] complete+0x23/0x60 [ 511.712115] [<ffffffffa0076a88>] mvs_tmf_timedout+0x18/0x20 [mvsas] [ 511.712119] [<ffffffffa0079bb5>] mvs_slot_complete+0x765/0x7d0 [mvsas] [ 511.712125] [<ffffffffa005a17d>] sas_scsi_recover_host+0x55d/0xdb0 [libsas] [ 511.712128] [<ffffffff8106d600>] ? idle_balance+0xe0/0x130 [ 511.712133] [<ffffffff813b150c>] scsi_error_handler+0xcc/0x470 [ 511.712136] [<ffffffff815f7ad0>] ? __schedule+0x370/0x730 [ 511.712139] [<ffffffff8105f728>] ? __wake_up_common+0x58/0x90 [ 511.712142] [<ffffffff813b1440>] ? scsi_eh_get_sense+0x110/0x110 [ 511.712146] [<ffffffff810571be>] kthread+0x8e/0xa0 [ 511.712150] [<ffffffff816015f4>] kernel_thread_helper+0x4/0x10 [ 511.712153] [<ffffffff81057130>] ? flush_kthread_work+0x120/0x120 [ 511.712156] [<ffffffff816015f0>] ? gs_change+0xb/0xb [ 511.712157] Code: 8a 00 01 00 00 89 d0 f0 66 0f b1 0f 66 39 d0 0f 94 c0 0f b6 c0 5d c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 9c 58 fa ba 00 01 00 00 <f0> 66 0f c1 17 0f b6 ce 38 d1 74 11 0f 1f 84 00 00 00 00 00 f3 [ 511.712191] RIP [<ffffffff815f8c0c>] _raw_spin_lock_irqsave+0xc/0x30 [ 511.712194] RSP <ffff880098d3bcb0> [ 511.712196] CR2: 0000000000000058 [ 511.712198] ---[ end trace a781c7b1e65db92c ]--- Signed-off-by: Jianpeng Ma <majianpeng@gmail.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] mvsas: remove unused variable in mvs_task_exec()Dan Carpenter2012-07-20
| | | | | | | | | | | We don't use "dev" any more after 07ec747a5f ("libsas: remove ata_port.lock management duties from lldds") and it causes a compile warning. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] libsas: trim sas_task of slow path infrastructureDan Williams2012-07-20
| | | | | | | | | | | The timer and the completion are only used for slow path tasks (smp, and lldd tmfs), yet we incur the allocation space and cpu setup time for every fast path task. Cc: Xiangliang Yu <yuxiangl@marvell.com> Acked-by: Jack Wang <jack_wang@usish.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* Merge tag 'scsi-misc' of ↵Linus Torvalds2012-03-22
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 SCSI updates from James Bottomley: "The update includes the usual assortment of driver updates (lpfc, qla2xxx, qla4xxx, bfa, bnx2fc, bnx2i, isci, fcoe, hpsa) plus a huge amount of infrastructure work in the SAS library and transport class as well as an iSCSI update. There's also a new SCSI based virtio driver." * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (177 commits) [SCSI] qla4xxx: Update driver version to 5.02.00-k15 [SCSI] qla4xxx: trivial cleanup [SCSI] qla4xxx: Fix sparse warning [SCSI] qla4xxx: Add support for multiple session per host. [SCSI] qla4xxx: Export CHAP index as sysfs attribute [SCSI] scsi_transport: Export CHAP index as sysfs attribute [SCSI] qla4xxx: Add support to display CHAP list and delete CHAP entry [SCSI] iscsi_transport: Add support to display CHAP list and delete CHAP entry [SCSI] pm8001: fix endian issue with code optimization. [SCSI] pm8001: Fix possible racing condition. [SCSI] pm8001: Fix bogus interrupt state flag issue. [SCSI] ipr: update PCI ID definitions for new adapters [SCSI] qla2xxx: handle default case in qla2x00_request_firmware() [SCSI] isci: improvements in driver unloading routine [SCSI] isci: improve phy event warnings [SCSI] isci: debug, provide state-enum-to-string conversions [SCSI] scsi_transport_sas: 'enable' phys on reset [SCSI] libsas: don't recover end devices attached to disabled phys [SCSI] libsas: fixup target_port_protocols for expanders that don't report sata [SCSI] libsas: set attached device type and target protocols for local phys ...
| * [SCSI] libsas: async ata scanningDan Williams2012-02-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | libsas ata error handling is already async but this does not help the scan case. Move initial link recovery out from under host->scan_mutex, and delay synchronization with eh until after all port probe/recovery work has been queued. Device ordering is maintained with scan order by still calling sas_rphy_add() in order of domain discovery. Since we now scan the domain list when invoking libata-eh we need to be careful to check for fully initialized ata ports. Acked-by: Jack Wang <jack_wang@usish.com> Acked-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libsas: fix sas_find_local_phy(), take phy referencesDan Williams2012-02-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the direct-attached case this routine returns the phy on which this device was first discovered. Which is broken if we want to support wide-targets, as this phy reference can become stale even though the port is still active. In the expander-attached case this routine tries to lookup the phy by scanning the attached sas addresses of the parent expander, and BUG_ONs if it can't find it. However since eh and the libsas workqueue run independently we can still be attempting device recovery via eh after libsas has recorded the device as detached. This is even easier to hit now that eh is blocked while device domain rediscovery takes place, and that libata is fed more timed out commands increasing the chances that it will try to recover the ata device. Arrange for dev->phy to always point to a last known good phy, it may be stale after the port is torn down, but it will catch up for wide port reconfigurations, and never be NULL. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libsas: remove ata_port.lock management duties from llddsDan Williams2012-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Each libsas driver (mvsas, pm8001, and isci) has invented a different method for managing the ap->lock. The lock is held by the ata ->queuecommand() path. mvsas drops it prior to acquiring any internal locks which allows it to hold its internal lock across calls to task->task_done(). This capability is important as it is the only way the driver can flush task->task_done() instances to guarantee that it no longer has any in-flight references to a domain_device at ->lldd_dev_gone() time. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libsas: introduce sas_drain_work()Dan Williams2012-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When an lldd invokes ->notify_port_event() it can trigger a chain of libsas events to: 1/ form the port and find the direct attached device 2/ if the attached device is an expander perform domain discovery A call to flush_workqueue() will only flush the initial port formation work. Currently libsas users need to call scsi_flush_work() up to the max depth of chain (which will grow from 2 to 3 when ata discovery is moved to its own discovery event). Instead of open coding multiple calls switch to use drain_workqueue() to flush sas work. drain_workqueue() does not handle new work submitted during the drain so libsas needs a bit of infrastructure to hold off unchained work submissions while a drain is in flight. A lldd ->notify() event is considered 'unchained' while a sas_discover_event() is 'chained'. As Tejun notes: "For now, I think it would be best to add private wrapper in libsas to support deferring unchained work items while draining." Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libsas: kill sas_slave_destroyDan Williams2012-02-19
| | | | | | | | | | | | | | | | | | Per commit 3e4ec344 "libata: kill ATA_FLAG_DISABLED" needing to set ATA_DEV_NONE is a holdover from before libsas converted to the "new-style" ata-eh. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* | scsi: remove the second argument of k[un]map_atomic()Cong Wang2012-03-20
|/ | | | Signed-off-by: Cong Wang <amwang@redhat.com>
* [SCSI] mv_sas: OCZ RevoDrive3 & zDrive R4 supportRobin H. Johnson2011-10-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the OCZ RevoDrive3/zDrive R4 series, the "OCZ SuperScale Storage Controller" with "Virtualized Controller Architecture 2.0" really seems to be a Marvell 88SE9485 part, with OCZ firmware/BIOS. Developed and tested on OCZ RevoDrive3 120GB [PCI 1b85:1021] Should work on: - OCZ RevoDrive3 (2x SandForce 2281) - OCZ RevoDrive3 X2 (4x SandForce 2281) - OCZ zDrive R4 CM84 (4x SandForce 2281) - OCZ zDrive R4 CM88 (8x SandForce 2281) - OCZ zDrive R4 RM84 (4x SandForce 2582) - OCZ zDrive R4 RM88 (8x SandForce 2582) All of this because a friend recently bought a OCZ RevoDrive3 and was bitten by the lack of Linux support. Notes from testing: ------------------- - SMART works. - VPD Device Identification is "OCZ-REVODRIVE3" - Thin provisioning/TRIM seems to be implemented as WRITE SAME UNMAP, with deterministic (non-zero) read after TRIM, but I'm not sure if it works 100% in my testing. - Some of the tuning in the firmware seems to ensure much better performance when in a RAID0 setup than using the two devices seperately. I have not tested booting from the SSD, because all of this was developed and tested remotely from the actual hardware. Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> Thanks-To: Gordon Pritchard <gordp@sfu.ca> Acked-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2011-10-28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (204 commits) [SCSI] qla4xxx: export address/port of connection (fix udev disk names) [SCSI] ipr: Fix BUG on adapter dump timeout [SCSI] megaraid_sas: Fix instance access in megasas_reset_timer [SCSI] hpsa: change confusing message to be more clear [SCSI] iscsi class: fix vlan configuration [SCSI] qla4xxx: fix data alignment and use nl helpers [SCSI] iscsi class: fix link local mispelling [SCSI] iscsi class: Replace iscsi_get_next_target_id with IDA [SCSI] aacraid: use lower snprintf() limit [SCSI] lpfc 8.3.27: Change driver version to 8.3.27 [SCSI] lpfc 8.3.27: T10 additions for SLI4 [SCSI] lpfc 8.3.27: Fix queue allocation failure recovery [SCSI] lpfc 8.3.27: Change algorithm for getting physical port name [SCSI] lpfc 8.3.27: Changed worst case mailbox timeout [SCSI] lpfc 8.3.27: Miscellanous logic and interface fixes [SCSI] megaraid_sas: Changelog and version update [SCSI] megaraid_sas: Add driver workaround for PERC5/1068 kdump kernel panic [SCSI] megaraid_sas: Add multiple MSI-X vector/multiple reply queue support [SCSI] megaraid_sas: Add support for MegaRAID 9360/9380 12GB/s controllers [SCSI] megaraid_sas: Clear FUSION_IN_RESET before enabling interrupts ...
| * [SCSI] isci: export phy events via ->lldd_control_phy()Dan Williams2011-10-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow the sas-transport-class to update events for local phys via a new PHY_FUNC_GET_EVENTS command to ->lldd_control_phy(). Fixup drivers that are not prepared for new enum phy_func values, and unify ->lldd_control_phy() error codes. These are the SAS defined phy events that are reported in a smp-report-phy-error-log command: * /sys/class/sas_phy/<phyX>/invalid_dword_count * /sys/class/sas_phy/<phyX>/running_disparity_error_count * /sys/class/sas_phy/<phyX>/loss_of_dword_sync_count * /sys/class/sas_phy/<phyX>/phy_reset_problem_count Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: update driver versionXiangliang Yu2011-10-02
| | | | | | | | | | | | | | This will synchronize the version string with internal driver. Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: fixed SMP request watchdog timeout issue.Xiangliang Yu2011-10-02
| | | | | | | | | | | | | | set SMP link timeout value to maximum. Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: expander write performance enhancementXiangliang Yu2011-10-02
| | | | | | | | | | | | | | | | with 1 expander, connect 8 HDD, the write performance will be improved by 80%. Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: change SL mode0 register valueXiangliang Yu2011-10-02
| | | | | | | | | | | | | | | | | | -- change connection behavior -- set bit8 to 1 for performance tuning -- set bit0 to 0 to enable retry for no_dest reject case. Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: fixed wrong destination when hiting NAK for command frameXiangliang Yu2011-10-02
| | | | | | | | | | | | | | disable non data frame retry Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: fixed some disk spin up issueXiangliang Yu2011-10-02
| | | | | | | | | | | | | | spin up issue: some direct attached SAS device can't spin up Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: add support for 9480 device idXiangliang Yu2011-10-02
| | | | | | | | | | | | | | Add support for Marvell 88SE9480 SAS/SATA HBA Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: fix expander link errorXiangliang Yu2011-10-02
| | | | | | | | | | | | | | Expanders fail to link when the phy rates are mismatched. Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: remove mvs_slave_{alloc|configure}Dan Williams2011-10-02
| | | | | | | | | | | | | | | | | | | | | | | | libsas now handles: 1/ limiting ata scanning to lun0 2/ maximizing the queue_depth of sas devices (up to 256, mvsas only supports 64) 3/ changes to /sys/block/<sdX>/device/queue_depth for ata devices Acked-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] libsas: export sas_alloc_task()Dan Williams2011-08-27
| | | | | | | | | | | | | | | | | | Now that isci has added a 3rd open coded user of this functionality just share the libsas version. Acked-by: Jack Wang <jack_wang@usish.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* | Merge branch 'master' into for-nextJiri Kosina2011-09-15
|\| | | | | | | | | Fast-forward merge with Linus to be able to merge patches based on more recent version of the tree.
| * [SCSI] mvsas: Add support for interrupt taskletXiangliang Yu2011-07-26
| | | | | | | | | | | | | | | | | | Add support for interrupt tasklet, which will improve performance. Correct spelling of "20011" [jejb: simplified ifdefs and fixed unused variable problem] Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: update commentsXiangliang Yu2011-07-26
| | | | | | | | | | | | | | Remove obsolete comments and add new comments Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: misc improvementsXiangliang Yu2011-07-26
| | | | | | | | | | | | | | | | | | | | | | Change code to match HBA datasheet. Change code to make it readable. Add support big endian for mvs_prd_imt. Add cpu_to_le32 and cpu_to_le64 to use on addr. Add scan_finished for structure mvs_prv_info. Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: Add new macros and functionsXiangliang Yu2011-07-26
| | | | | | | | | | | | | | | | | | | | | | | | Add new macros: MVS_SOFT_RESET, MVS_HARD_RESET, MVS_PHY_TUNE, MVS_COMMAND_ACTIVE, EXP_BRCT_CHG, MVS_MAX_SG Add new member sg_width in struct mvs_chip_info Use macros rather than magic number Add new functions: mvs_fill_ssp_resp_iu, mvs_set_sense, mvs_94xx_clear_srs_irq, mvs_94xx_phy_set_link_rate Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: Remove unused macros, variables and functionsXiangliang Yu2011-07-26
| | | | | | | | | | | | | | | | | | | | | | Remove unused macros: VSR_PHY_VS0, VSR_PHY_VS1, MVS_SLOTS, MVS_CAN_QUEUE, MVS_MSI, SG_MX, _MV_DUMP, MV_DISABLE_NCQ Remove unused variables for mvs_info: irq, exp_req, cmd_size Remove unused functions: mvs_get_sas_addr, mvs_hexdump, mvs_hba_sb_dump, mvs_hab_memory_dump, mvs_hba_cq_dump Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: fix 94xx hotplug issueXiangliang Yu2011-07-26
| | | | | | | | | | | | | | | | Fix 94xx A0/B0 revision hotplug issue. Remove unused macro: DISABLE_HOTPLUG_DMA_FIX Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: Add driver version and interrupt coalescing to device ↵Xiangliang Yu2011-07-26
| | | | | | | | | | | | | | attributes in sysfs Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: add support for 94xx phy tuning and multiple revisionsXiangliang Yu2011-07-26
| | | | | | | | | | | | | | | | Add 94xx phy tuning to aid manufacturing. Add support for 94xx multiple revisions: A0, B0, C0, C1, C2. Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * [SCSI] mvsas: Add support for Non specific NCQ error interruptXiangliang Yu2011-07-26
| | | | | | | | | | Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* | Remove unneeded version.h includes from drivers/scsi/Jesper Juhl2011-09-15
|/ | | | | | | | | It was pointed out by 'make versioncheck' that some includes of linux/version.h are not needed in drivers/scsi/. This patch removes them. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* [SCSI] mvsas: add support for Task collector mode and fixed relative bugsXiangliang Yu2011-05-01
| | | | | | | | | | | | | 1. Add support for Task collector mode. 2. Fixed relative collector mode bug: - I/O failed when disks is on two ports - system hang when hotplug disk - system hang when unplug disk during run IO 3. Unlock ap->lock within .lldd_execute_task for direct mode to improve performance Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] mvsas: add support for Marvell 88SE9445/88SE9485Xiangliang Yu2011-05-01
| | | | | | | | This is support for Marvell 88SE9445/88SE9485 SAS/SATA HBA, which is based on Marvell 88SE9480. Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] mvsas: Add support for HighPoint RR27xx series HBAHighPoint Linux Team2011-03-23
| | | | | | | | This patch is to add support for HighPoint RR27xx SAS/SATA HBA which is based on Marvell 88SE9480 chipset. Signed-off-by: HighPoint Linux Team <linux@highpoint-tech.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* scsi: change to new flag variablematt mooney2011-03-17
| | | | | | | | Replace EXTRA_CFLAGS with ccflags-y. Signed-off-by: matt mooney <mfm@muteddisk.com> Acked-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* [SCSI] Unify SAM_ and SAM_STAT_ macrosJames Bottomley2010-07-28
| | | | | | | | | | | We have two separate definitions for identical constants with nearly the same name. One comes from the generic headers in scsi.h; the other is an enum in libsas.h ... it's causing confusion about which one is correct (fortunately they both are). Fix this by eliminating the libsas.h duplicate Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] mvsas: fix potential NULL dereferenceJiri Slaby2010-07-27
| | | | | | | | Stanse found that in mvs_abort_task, mvi_dev is dereferenced earlier than tested for being NULL. Move the assignment below the test. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] mvsas: fix hot plug handling and IO issuesSrinivas2010-04-11
| | | | | | | | | | | | | | | | | | | | | This patch adds a bunch of fixes 1. Reduce sg table size to 64 (SG_MX) instead of default SG_ALL 2. clear task lists on phy down events 3. release all tasks on port deformation 4. release current task for device gone notification 5. Add sata abort handing 6. Add 10ms delay to each port reset (currently done serially and with interrupts disabled) [jejb: whitespace fixes and clean ups plus added description added dummy 94xx_clear_srs_irq function just to prevent the mismatch in the mvs_dispatch structure killing 94xx cards] Signed-off-by: Srinivas <satyasrinivasp@hcl.in> Cc: Andy Yan <ayan@marvell.com> Cc: qswang@marvell.com Cc: jfeng@marvell.com Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* [SCSI] mvsas: add support for Adaptec ASC-1045/1405 SAS/SATA HBASrinivas2009-12-10
| | | | | | | | | This is support for Adaptec ASC-1045/1405 SAS/SATA HBA on mvsas, which is based on Marvell 88SE6440 chipset. Signed-off-by: Srinivas <satyasrinivasp@hcl.in> Cc: Andy Yan <ayan@marvell.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] mvsas: Support Areca SAS/SATA HBA, ARC-1300/1320Nick Cheng2009-10-02
| | | | | | | | | This is support for Areca SAS/SATA HBA, ARC-1300/1320, which quipped with 88SE6440/88SE9480 respectively. Signed-off-by: Nick Cheng< nick.cheng@areca.com.tw > Cc: Ke Wei <kewei.mv@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] mvsas: remove all the casts from void * or to void *Andy Yan2009-05-23
| | | | | | | Signed-off-by: Ying Chu <jasonchu@marvell.com> Signed-off-by: Andy Yan <ayan@marvell.com> Signed-off-by: Ke Wei <kewei@marvell.com Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-11 14:07:58 -0400
pan class="hl com">/*end-of-interrupt request */ /*values for bits 7,1,0 of Basic Control reg. (bits 6-2 reserved) */ #define IM_HW_RESET 0x80 /*hardware reset */ #define IM_ENABLE_DMA 0x02 /*enable subsystem's busmaster DMA */ #define IM_ENABLE_INTR 0x01 /*enable interrupts to the system */ /*to interpret the upper nibble of Interrupt Status register */ /*note: the lower nibble specifies the device(0-14), or subsystem(15) */ #define IM_SCB_CMD_COMPLETED 0x10 #define IM_SCB_CMD_COMPLETED_WITH_RETRIES 0x50 #define IM_LOOP_SCATTER_BUFFER_FULL 0x60 #define IM_ADAPTER_HW_FAILURE 0x70 #define IM_IMMEDIATE_CMD_COMPLETED 0xa0 #define IM_CMD_COMPLETED_WITH_FAILURE 0xc0 #define IM_CMD_ERROR 0xe0 #define IM_SOFTWARE_SEQUENCING_ERROR 0xf0 /*to interpret bits 3-0 of Basic Status register (bits 7-4 reserved) */ #define IM_CMD_REG_FULL 0x08 #define IM_CMD_REG_EMPTY 0x04 #define IM_INTR_REQUEST 0x02 #define IM_BUSY 0x01 /*immediate commands (word written into low 2 bytes of command reg) */ #define IM_RESET_IMM_CMD 0x0400 #define IM_FEATURE_CTR_IMM_CMD 0x040c #define IM_DMA_PACING_IMM_CMD 0x040d #define IM_ASSIGN_IMM_CMD 0x040e #define IM_ABORT_IMM_CMD 0x040f #define IM_FORMAT_PREP_IMM_CMD 0x0417 /*SCB (Subsystem Control Block) structure */ struct im_scb { unsigned short command; /*command word (read, etc.) */ unsigned short enable; /*enable word, modifies cmd */ union { unsigned long log_blk_adr; /*block address on SCSI device */ unsigned char scsi_cmd_length; /*6,10,12, for other scsi cmd */ } u1; unsigned long sys_buf_adr; /*physical system memory adr */ unsigned long sys_buf_length; /*size of sys mem buffer */ unsigned long tsb_adr; /*Termination Status Block adr */ unsigned long scb_chain_adr; /*optional SCB chain address */ union { struct { unsigned short count; /*block count, on SCSI device */ unsigned short length; /*block length, on SCSI device */ } blk; unsigned char scsi_command[12]; /*other scsi command */ } u2; }; /*structure scatter-gather element (for list of system memory areas) */ struct im_sge { void *address; unsigned long byte_length; }; /*structure returned by a get_pos_info command: */ struct im_pos_info { unsigned short pos_id; /* adapter id */ unsigned char pos_3a; /* pos 3 (if pos 6 = 0) */ unsigned char pos_2; /* pos 2 */ unsigned char int_level; /* interrupt level IRQ 11 or 14 */ unsigned char pos_4a; /* pos 4 (if pos 6 = 0) */ unsigned short connector_size; /* MCA connector size: 16 or 32 Bit */ unsigned char num_luns; /* number of supported luns per device */ unsigned char num_puns; /* number of supported puns */ unsigned char pacing_factor; /* pacing factor */ unsigned char num_ldns; /* number of ldns available */ unsigned char eoi_off; /* time EOI and interrupt inactive */ unsigned char max_busy; /* time between reset and busy on */ unsigned short cache_stat; /* ldn cachestat. Bit=1 = not cached */ unsigned short retry_stat; /* retry status of ldns. Bit=1=disabled */ unsigned char pos_4b; /* pos 4 (if pos 6 = 1) */ unsigned char pos_3b; /* pos 3 (if pos 6 = 1) */ unsigned char pos_6; /* pos 6 */ unsigned char pos_5; /* pos 5 */ unsigned short max_overlap; /* maximum overlapping requests */ unsigned short num_bus; /* number of SCSI-busses */ }; /*values for SCB command word */ #define IM_NO_SYNCHRONOUS 0x0040 /*flag for any command */ #define IM_NO_DISCONNECT 0x0080 /*flag for any command */ #define IM_READ_DATA_CMD 0x1c01 #define IM_WRITE_DATA_CMD 0x1c02 #define IM_READ_VERIFY_CMD 0x1c03 #define IM_WRITE_VERIFY_CMD 0x1c04 #define IM_REQUEST_SENSE_CMD 0x1c08 #define IM_READ_CAPACITY_CMD 0x1c09 #define IM_DEVICE_INQUIRY_CMD 0x1c0b #define IM_READ_LOGICAL_CMD 0x1c2a #define IM_OTHER_SCSI_CMD_CMD 0x241f /* unused, but supported, SCB commands */ #define IM_GET_COMMAND_COMPLETE_STATUS_CMD 0x1c07 /* command status */ #define IM_GET_POS_INFO_CMD 0x1c0a /* returns neat stuff */ #define IM_READ_PREFETCH_CMD 0x1c31 /* caching controller only */ #define IM_FOMAT_UNIT_CMD 0x1c16 /* format unit */ #define IM_REASSIGN_BLOCK_CMD 0x1c18 /* in case of error */ /*values to set bits in the enable word of SCB */ #define IM_READ_CONTROL 0x8000 #define IM_REPORT_TSB_ONLY_ON_ERROR 0x4000 #define IM_RETRY_ENABLE 0x2000 #define IM_POINTER_TO_LIST 0x1000 #define IM_SUPRESS_EXCEPTION_SHORT 0x0400 #define IM_BYPASS_BUFFER 0x0200 #define IM_CHAIN_ON_NO_ERROR 0x0001 /*TSB (Termination Status Block) structure */ struct im_tsb { unsigned short end_status; unsigned short reserved1; unsigned long residual_byte_count; unsigned long sg_list_element_adr; unsigned short status_length; unsigned char dev_status; unsigned char cmd_status; unsigned char dev_error; unsigned char cmd_error; unsigned short reserved2; unsigned short reserved3; unsigned short low_of_last_scb_adr; unsigned short high_of_last_scb_adr; }; /*subsystem uses interrupt request level 14 */ #define IM_IRQ 14 /*SCSI-2 F/W may evade to interrupt 11 */ #define IM_IRQ_FW 11 /* Model 95 has an additional alphanumeric display, which can be used to display SCSI-activities. 8595 models do not have any disk led, which makes this feature quite useful. The regular PS/2 disk led is turned on/off by bits 6,7 of system control port. */ /* LED display-port (actually, last LED on display) */ #define MOD95_LED_PORT 0x108 /* system-control-register of PS/2s with diskindicator */ #define PS2_SYS_CTR 0x92 /* activity displaying methods */ #define LED_DISP 1 #define LED_ADISP 2 #define LED_ACTIVITY 4 /* failed intr */ #define CMD_FAIL 255 /* The SCSI-ID(!) of the accessed SCSI-device is shown on PS/2-95 machines' LED displays. ldn is no longer displayed here, because the ldn mapping is now done dynamically and the ldn <-> pun,lun maps can be looked-up at boottime or during uptime in /proc/scsi/ibmmca/<host_no> in case of trouble, interest, debugging or just for having fun. The left number gives the host-adapter number and the right shows the accessed SCSI-ID. */ /* display_mode is set by the ibmmcascsi= command line arg */ static int display_mode = 0; /* set default adapter timeout */ static unsigned int adapter_timeout = 45; /* for probing on feature-command: */ static unsigned int global_command_error_excuse = 0; /* global setting by command line for adapter_speed */ static int global_adapter_speed = 0; /* full speed by default */ /* Panel / LED on, do it right for F/W addressin, too. adisplay will * just ignore ids>7, as the panel has only 7 digits available */ #define PS2_DISK_LED_ON(ad,id) { if (display_mode & LED_DISP) { if (id>9) \ outw((ad+48)|((id+55)<<8), MOD95_LED_PORT ); else \ outw((ad+48)|((id+48)<<8), MOD95_LED_PORT ); } else \ if (display_mode & LED_ADISP) { if (id<7) outb((char)(id+48),MOD95_LED_PORT+1+id); \ outb((char)(ad+48), MOD95_LED_PORT); } \ if ((display_mode & LED_ACTIVITY)||(!display_mode)) \ outb(inb(PS2_SYS_CTR) | 0xc0, PS2_SYS_CTR); } /* Panel / LED off */ /* bug fixed, Dec 15, 1997, where | was replaced by & here */ #define PS2_DISK_LED_OFF() { if (display_mode & LED_DISP) \ outw(0x2020, MOD95_LED_PORT ); else if (display_mode & LED_ADISP) { \ outl(0x20202020,MOD95_LED_PORT); outl(0x20202020,MOD95_LED_PORT+4); } \ if ((display_mode & LED_ACTIVITY)||(!display_mode)) \ outb(inb(PS2_SYS_CTR) & 0x3f, PS2_SYS_CTR); } /* types of different supported hardware that goes to hostdata special */ #define IBM_SCSI2_FW 0 #define IBM_7568_WCACHE 1 #define IBM_EXP_UNIT 2 #define IBM_SCSI_WCACHE 3 #define IBM_SCSI 4 #define IBM_INTEGSCSI 5 /* other special flags for hostdata structure */ #define FORCED_DETECTION 100 #define INTEGRATED_SCSI 101 /* List of possible IBM-SCSI-adapters */ static short ibmmca_id_table[] = { 0x8efc, 0x8efd, 0x8ef8, 0x8eff, 0x8efe, /* No entry for integrated SCSI, that's part of the register */ 0 }; static const char *ibmmca_description[] = { "IBM SCSI-2 F/W Adapter", /* special = 0 */ "IBM 7568 Industrial Computer SCSI Adapter w/Cache", /* special = 1 */ "IBM Expansion Unit SCSI Controller", /* special = 2 */ "IBM SCSI Adapter w/Cache", /* special = 3 */ "IBM SCSI Adapter", /* special = 4 */ "IBM Integrated SCSI Controller", /* special = 5 */ }; /* Max number of logical devices (can be up from 0 to 14). 15 is the address of the adapter itself. */ #define MAX_LOG_DEV 15 /*local data for a logical device */ struct logical_device { struct im_scb scb; /* SCSI-subsystem-control-block structure */ struct im_tsb tsb; /* SCSI command complete status block structure */ struct im_sge sge[16]; /* scatter gather list structure */ unsigned char buf[256]; /* SCSI command return data buffer */ Scsi_Cmnd *cmd; /* SCSI-command that is currently in progress */ int device_type; /* type of the SCSI-device. See include/scsi/scsi.h for interpretation of the possible values */ int block_length; /* blocksize of a particular logical SCSI-device */ int cache_flag; /* 1 if this is uncached, 0 if cache is present for ldn */ int retry_flag; /* 1 if adapter retry is disabled, 0 if enabled */ }; /* statistics of the driver during operations (for proc_info) */ struct Driver_Statistics { /* SCSI statistics on the adapter */ int ldn_access[MAX_LOG_DEV + 1]; /* total accesses on a ldn */ int ldn_read_access[MAX_LOG_DEV + 1]; /* total read-access on a ldn */ int ldn_write_access[MAX_LOG_DEV + 1]; /* total write-access on a ldn */ int ldn_inquiry_access[MAX_LOG_DEV + 1]; /* total inquiries on a ldn */ int ldn_modeselect_access[MAX_LOG_DEV + 1]; /* total mode selects on ldn */ int scbs; /* short SCBs queued */ int long_scbs; /* long SCBs queued */ int total_accesses; /* total accesses on all ldns */ int total_interrupts; /* total interrupts (should be same as total_accesses) */ int total_errors; /* command completed with error */ /* dynamical assignment statistics */ int total_scsi_devices; /* number of physical pun,lun */ int dyn_flag; /* flag showing dynamical mode */ int dynamical_assignments; /* number of remappings of ldns */ int ldn_assignments[MAX_LOG_DEV + 1]; /* number of remappings of each ldn */ }; /* data structure for each host adapter */ struct ibmmca_hostdata { /* array of logical devices: */ struct logical_device _ld[MAX_LOG_DEV + 1]; /* array to convert (pun, lun) into logical device number: */ unsigned char _get_ldn[16][8]; /*array that contains the information about the physical SCSI-devices attached to this host adapter: */ unsigned char _get_scsi[16][8]; /* used only when checking logical devices: */ int _local_checking_phase_flag; /* report received interrupt: */ int _got_interrupt; /* report termination-status of SCSI-command: */ int _stat_result; /* reset status (used only when doing reset): */ int _reset_status; /* code of the last SCSI command (needed for panic info): */ int _last_scsi_command[MAX_LOG_DEV + 1]; /* identifier of the last SCSI-command type */ int _last_scsi_type[MAX_LOG_DEV + 1]; /* last blockcount */ int _last_scsi_blockcount[MAX_LOG_DEV + 1]; /* last locgical block address */ unsigned long _last_scsi_logical_block[MAX_LOG_DEV + 1]; /* Counter that points on the next reassignable ldn for dynamical remapping. The default value is 7, that is the first reassignable number in the list at boottime: */ int _next_ldn; /* Statistics-structure for this IBM-SCSI-host: */ struct Driver_Statistics _IBM_DS; /* This hostadapters pos-registers pos2 until pos6 */ unsigned int _pos[8]; /* assign a special variable, that contains dedicated info about the adaptertype */ int _special; /* connector size on the MCA bus */ int _connector_size; /* synchronous SCSI transfer rate bitpattern */ int _adapter_speed; }; /* macros to access host data structure */ #define subsystem_pun(h) ((h)->this_id) #define subsystem_maxid(h) ((h)->max_id) #define ld(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_ld) #define get_ldn(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_get_ldn) #define get_scsi(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_get_scsi) #define local_checking_phase_flag(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_local_checking_phase_flag) #define got_interrupt(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_got_interrupt) #define stat_result(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_stat_result) #define reset_status(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_reset_status) #define last_scsi_command(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_command) #define last_scsi_type(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_type) #define last_scsi_blockcount(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_blockcount) #define last_scsi_logical_block(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_logical_block) #define last_scsi_type(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_type) #define next_ldn(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_next_ldn) #define IBM_DS(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_IBM_DS) #define special(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_special) #define subsystem_connector_size(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_connector_size) #define adapter_speed(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_adapter_speed) #define pos2(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[2]) #define pos3(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[3]) #define pos4(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[4]) #define pos5(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[5]) #define pos6(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[6]) /* Define a arbitrary number as subsystem-marker-type. This number is, as described in the ANSI-SCSI-standard, not occupied by other device-types. */ #define TYPE_IBM_SCSI_ADAPTER 0x2F /* Define 0xFF for no device type, because this type is not defined within the ANSI-SCSI-standard, therefore, it can be used and should not cause any harm. */ #define TYPE_NO_DEVICE 0xFF /* define medium-changer. If this is not defined previously, e.g. Linux 2.0.x, define this type here. */ #ifndef TYPE_MEDIUM_CHANGER #define TYPE_MEDIUM_CHANGER 0x08 #endif /* define possible operations for the immediate_assign command */ #define SET_LDN 0 #define REMOVE_LDN 1 /* ldn which is used to probe the SCSI devices */ #define PROBE_LDN 0 /* reset status flag contents */ #define IM_RESET_NOT_IN_PROGRESS 0 #define IM_RESET_IN_PROGRESS 1 #define IM_RESET_FINISHED_OK 2 #define IM_RESET_FINISHED_FAIL 3 #define IM_RESET_NOT_IN_PROGRESS_NO_INT 4 #define IM_RESET_FINISHED_OK_NO_INT 5 /* define undefined SCSI-command */ #define NO_SCSI 0xffff /*-----------------------------------------------------------------------*/ /* if this is nonzero, ibmmcascsi option has been passed to the kernel */ static int io_port[IM_MAX_HOSTS] = { 0, 0, 0, 0, 0, 0, 0, 0 }; static int scsi_id[IM_MAX_HOSTS] = { 7, 7, 7, 7, 7, 7, 7, 7 }; /* fill module-parameters only, when this define is present. (that is kernel version 2.1.x) */ #if defined(MODULE) static char *boot_options = NULL; module_param(boot_options, charp, 0); module_param_array(io_port, int, NULL, 0); module_param_array(scsi_id, int, NULL, 0); MODULE_LICENSE("GPL"); #endif /*counter of concurrent disk read/writes, to turn on/off disk led */ static int disk_rw_in_progress = 0; static unsigned int pos[8]; /* whole pos register-line for diagnosis */ /* Taking into account the additions, made by ZP Gu. * This selects now the preset value from the configfile and * offers the 'normal' commandline option to be accepted */ #ifdef CONFIG_IBMMCA_SCSI_ORDER_STANDARD static char ibm_ansi_order = 1; #else static char ibm_ansi_order = 0; #endif static void issue_cmd(struct Scsi_Host *, unsigned long, unsigned char); static void internal_done(Scsi_Cmnd * cmd); static void check_devices(struct Scsi_Host *, int); static int immediate_assign(struct Scsi_Host *, unsigned int, unsigned int, unsigned int, unsigned int); static int immediate_feature(struct Scsi_Host *, unsigned int, unsigned int); #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET static int immediate_reset(struct Scsi_Host *, unsigned int); #endif static int device_inquiry(struct Scsi_Host *, int); static int read_capacity(struct Scsi_Host *, int); static int get_pos_info(struct Scsi_Host *); static char *ti_p(int); static char *ti_l(int); static char *ibmrate(unsigned int, int); static int probe_display(int); static int probe_bus_mode(struct Scsi_Host *); static int device_exists(struct Scsi_Host *, int, int *, int *); static int option_setup(char *); /* local functions needed for proc_info */ static int ldn_access_load(struct Scsi_Host *, int); static int ldn_access_total_read_write(struct Scsi_Host *); static irqreturn_t interrupt_handler(int irq, void *dev_id) { unsigned int intr_reg; unsigned int cmd_result; unsigned int ldn; unsigned long flags; Scsi_Cmnd *cmd; int lastSCSI; struct device *dev = dev_id; struct Scsi_Host *shpnt = dev_get_drvdata(dev); spin_lock_irqsave(shpnt->host_lock, flags); if(!(inb(IM_STAT_REG(shpnt)) & IM_INTR_REQUEST)) { spin_unlock_irqrestore(shpnt->host_lock, flags); return IRQ_NONE; } /* the reset-function already did all the job, even ints got renabled on the subsystem, so just return */ if ((reset_status(shpnt) == IM_RESET_NOT_IN_PROGRESS_NO_INT) || (reset_status(shpnt) == IM_RESET_FINISHED_OK_NO_INT)) { reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS; spin_unlock_irqrestore(shpnt->host_lock, flags); return IRQ_HANDLED; } /*must wait for attention reg not busy, then send EOI to subsystem */ while (1) { if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) break; cpu_relax(); } /*get command result and logical device */ intr_reg = (unsigned char) (inb(IM_INTR_REG(shpnt))); cmd_result = intr_reg & 0xf0; ldn = intr_reg & 0x0f; /* get the last_scsi_command here */ lastSCSI = last_scsi_command(shpnt)[ldn]; outb(IM_EOI | ldn, IM_ATTN_REG(shpnt)); /*these should never happen (hw fails, or a local programming bug) */ if (!global_command_error_excuse) { switch (cmd_result) { /* Prevent from Ooopsing on error to show the real reason */ case IM_ADAPTER_HW_FAILURE: case IM_SOFTWARE_SEQUENCING_ERROR: case IM_CMD_ERROR: printk(KERN_ERR "IBM MCA SCSI: Fatal Subsystem ERROR!\n"); printk(KERN_ERR " Last cmd=0x%x, ena=%x, len=", lastSCSI, ld(shpnt)[ldn].scb.enable); if (ld(shpnt)[ldn].cmd) printk("%ld/%ld,", (long) (scsi_bufflen(ld(shpnt)[ldn].cmd)), (long) (ld(shpnt)[ldn].scb.sys_buf_length)); else printk("none,"); if (ld(shpnt)[ldn].cmd) printk("Blocksize=%d", ld(shpnt)[ldn].scb.u2.blk.length); else printk("Blocksize=none"); printk(", host=%p, ldn=0x%x\n", shpnt, ldn); if (ld(shpnt)[ldn].cmd) { printk(KERN_ERR "Blockcount=%d/%d\n", last_scsi_blockcount(shpnt)[ldn], ld(shpnt)[ldn].scb.u2.blk.count); printk(KERN_ERR "Logical block=%lx/%lx\n", last_scsi_logical_block(shpnt)[ldn], ld(shpnt)[ldn].scb.u1.log_blk_adr); } printk(KERN_ERR "Reason given: %s\n", (cmd_result == IM_ADAPTER_HW_FAILURE) ? "HARDWARE FAILURE" : (cmd_result == IM_SOFTWARE_SEQUENCING_ERROR) ? "SOFTWARE SEQUENCING ERROR" : (cmd_result == IM_CMD_ERROR) ? "COMMAND ERROR" : "UNKNOWN"); /* if errors appear, enter this section to give detailed info */ printk(KERN_ERR "IBM MCA SCSI: Subsystem Error-Status follows:\n"); printk(KERN_ERR " Command Type................: %x\n", last_scsi_type(shpnt)[ldn]); printk(KERN_ERR " Attention Register..........: %x\n", inb(IM_ATTN_REG(shpnt))); printk(KERN_ERR " Basic Control Register......: %x\n", inb(IM_CTR_REG(shpnt))); printk(KERN_ERR " Interrupt Status Register...: %x\n", intr_reg); printk(KERN_ERR " Basic Status Register.......: %x\n", inb(IM_STAT_REG(shpnt))); if ((last_scsi_type(shpnt)[ldn] == IM_SCB) || (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB)) { printk(KERN_ERR " SCB-Command.................: %x\n", ld(shpnt)[ldn].scb.command); printk(KERN_ERR " SCB-Enable..................: %x\n", ld(shpnt)[ldn].scb.enable); printk(KERN_ERR " SCB-logical block address...: %lx\n", ld(shpnt)[ldn].scb.u1.log_blk_adr); printk(KERN_ERR " SCB-system buffer address...: %lx\n", ld(shpnt)[ldn].scb.sys_buf_adr); printk(KERN_ERR " SCB-system buffer length....: %lx\n", ld(shpnt)[ldn].scb.sys_buf_length); printk(KERN_ERR " SCB-tsb address.............: %lx\n", ld(shpnt)[ldn].scb.tsb_adr); printk(KERN_ERR " SCB-Chain address...........: %lx\n", ld(shpnt)[ldn].scb.scb_chain_adr); printk(KERN_ERR " SCB-block count.............: %x\n", ld(shpnt)[ldn].scb.u2.blk.count); printk(KERN_ERR " SCB-block length............: %x\n", ld(shpnt)[ldn].scb.u2.blk.length); } printk(KERN_ERR " Send this report to the maintainer.\n"); panic("IBM MCA SCSI: Fatal error message from the subsystem (0x%X,0x%X)!\n", lastSCSI, cmd_result); break; } } else { /* The command error handling is made silent, but we tell the * calling function, that there is a reported error from the * adapter. */ switch (cmd_result) { case IM_ADAPTER_HW_FAILURE: case IM_SOFTWARE_SEQUENCING_ERROR: case IM_CMD_ERROR: global_command_error_excuse = CMD_FAIL; break; default: global_command_error_excuse = 0; break; } } /* if no panic appeared, increase the interrupt-counter */ IBM_DS(shpnt).total_interrupts++; /*only for local checking phase */ if (local_checking_phase_flag(shpnt)) { stat_result(shpnt) = cmd_result; got_interrupt(shpnt) = 1; reset_status(shpnt) = IM_RESET_FINISHED_OK; last_scsi_command(shpnt)[ldn] = NO_SCSI; spin_unlock_irqrestore(shpnt->host_lock, flags); return IRQ_HANDLED; } /* handling of commands coming from upper level of scsi driver */ if (last_scsi_type(shpnt)[ldn] == IM_IMM_CMD) { /* verify ldn, and may handle rare reset immediate command */ if ((reset_status(shpnt) == IM_RESET_IN_PROGRESS) && (last_scsi_command(shpnt)[ldn] == IM_RESET_IMM_CMD)) { if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) { disk_rw_in_progress = 0; PS2_DISK_LED_OFF(); reset_status(shpnt) = IM_RESET_FINISHED_FAIL; } else { /*reset disk led counter, turn off disk led */ disk_rw_in_progress = 0; PS2_DISK_LED_OFF(); reset_status(shpnt) = IM_RESET_FINISHED_OK; } stat_result(shpnt) = cmd_result; last_scsi_command(shpnt)[ldn] = NO_SCSI; last_scsi_type(shpnt)[ldn] = 0; spin_unlock_irqrestore(shpnt->host_lock, flags); return IRQ_HANDLED; } else if (last_scsi_command(shpnt)[ldn] == IM_ABORT_IMM_CMD) { /* react on SCSI abort command */ #ifdef IM_DEBUG_PROBE printk("IBM MCA SCSI: Interrupt from SCSI-abort.\n"); #endif disk_rw_in_progress = 0; PS2_DISK_LED_OFF(); cmd = ld(shpnt)[ldn].cmd; ld(shpnt)[ldn].cmd = NULL; if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) cmd->result = DID_NO_CONNECT << 16; else cmd->result = DID_ABORT << 16; stat_result(shpnt) = cmd_result; last_scsi_command(shpnt)[ldn] = NO_SCSI; last_scsi_type(shpnt)[ldn] = 0; if (cmd->scsi_done) (cmd->scsi_done) (cmd); /* should be the internal_done */ spin_unlock_irqrestore(shpnt->host_lock, flags); return IRQ_HANDLED; } else { disk_rw_in_progress = 0; PS2_DISK_LED_OFF(); reset_status(shpnt) = IM_RESET_FINISHED_OK; stat_result(shpnt) = cmd_result; last_scsi_command(shpnt)[ldn] = NO_SCSI; spin_unlock_irqrestore(shpnt->host_lock, flags); return IRQ_HANDLED; } } last_scsi_command(shpnt)[ldn] = NO_SCSI; last_scsi_type(shpnt)[ldn] = 0; cmd = ld(shpnt)[ldn].cmd; ld(shpnt)[ldn].cmd = NULL; #ifdef IM_DEBUG_TIMEOUT if (cmd) { if ((cmd->target == TIMEOUT_PUN) && (cmd->device->lun == TIMEOUT_LUN)) { spin_unlock_irqsave(shpnt->host_lock, flags); printk("IBM MCA SCSI: Ignoring interrupt from pun=%x, lun=%x.\n", cmd->target, cmd->device->lun); return IRQ_HANDLED; } } #endif /*if no command structure, just return, else clear cmd */ if (!cmd) { spin_unlock_irqrestore(shpnt->host_lock, flags); return IRQ_HANDLED; } #ifdef IM_DEBUG_INT printk("cmd=%02x ireg=%02x ds=%02x cs=%02x de=%02x ce=%02x\n", cmd->cmnd[0], intr_reg, ld(shpnt)[ldn].tsb.dev_status, ld(shpnt)[ldn].tsb.cmd_status, ld(shpnt)[ldn].tsb.dev_error, ld(shpnt)[ldn].tsb.cmd_error); #endif /*if this is end of media read/write, may turn off PS/2 disk led */ if ((ld(shpnt)[ldn].device_type != TYPE_NO_LUN) && (ld(shpnt)[ldn].device_type != TYPE_NO_DEVICE)) { /* only access this, if there was a valid device addressed */ if (--disk_rw_in_progress == 0) PS2_DISK_LED_OFF(); } /* IBM describes the status-mask to be 0x1e, but this is not conform * with SCSI-definition, I suppose, the reason for it is that IBM * adapters do not support CMD_TERMINATED, TASK_SET_FULL and * ACA_ACTIVE as returning statusbyte information. (ML) */ if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) { cmd->result = (unsigned char) (ld(shpnt)[ldn].tsb.dev_status & 0x1e); IBM_DS(shpnt).total_errors++; } else cmd->result = 0; /* write device status into cmd->result, and call done function */ if (lastSCSI == NO_SCSI) { /* unexpected interrupt :-( */ cmd->result |= DID_BAD_INTR << 16; printk("IBM MCA SCSI: WARNING - Interrupt from non-pending SCSI-command!\n"); } else /* things went right :-) */ cmd->result |= DID_OK << 16; if (cmd->scsi_done) (cmd->scsi_done) (cmd); spin_unlock_irqrestore(shpnt->host_lock, flags); return IRQ_HANDLED; } static void issue_cmd(struct Scsi_Host *shpnt, unsigned long cmd_reg, unsigned char attn_reg) { unsigned long flags; /* must wait for attention reg not busy */ while (1) { spin_lock_irqsave(shpnt->host_lock, flags); if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) break; spin_unlock_irqrestore(shpnt->host_lock, flags); } /* write registers and enable system interrupts */ outl(cmd_reg, IM_CMD_REG(shpnt)); outb(attn_reg, IM_ATTN_REG(shpnt)); spin_unlock_irqrestore(shpnt->host_lock, flags); } static void internal_done(Scsi_Cmnd * cmd) { cmd->SCp.Status++; return; } /* SCSI-SCB-command for device_inquiry */ static int device_inquiry(struct Scsi_Host *shpnt, int ldn) { int retr; struct im_scb *scb; struct im_tsb *tsb; unsigned char *buf; scb = &(ld(shpnt)[ldn].scb); tsb = &(ld(shpnt)[ldn].tsb); buf = (unsigned char *) (&(ld(shpnt)[ldn].buf)); ld(shpnt)[ldn].tsb.dev_status = 0; /* prepare statusblock */ for (retr = 0; retr < 3; retr++) { /* fill scb with inquiry command */ scb->command = IM_DEVICE_INQUIRY_CMD | IM_NO_DISCONNECT; scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_RETRY_ENABLE | IM_BYPASS_BUFFER; last_scsi_command(shpnt)[ldn] = IM_DEVICE_INQUIRY_CMD; last_scsi_type(shpnt)[ldn] = IM_SCB; scb->sys_buf_adr = isa_virt_to_bus(buf); scb->sys_buf_length = 255; /* maximum bufferlength gives max info */ scb->tsb_adr = isa_virt_to_bus(tsb); /* issue scb to passed ldn, and busy wait for interrupt */ got_interrupt(shpnt) = 0; issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); while (!got_interrupt(shpnt)) barrier(); /*if command successful, break */ if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) return 1; } /*if all three retries failed, return "no device at this ldn" */ if (retr >= 3) return 0; else return 1; } static int read_capacity(struct Scsi_Host *shpnt, int ldn) { int retr; struct im_scb *scb; struct im_tsb *tsb; unsigned char *buf; scb = &(ld(shpnt)[ldn].scb); tsb = &(ld(shpnt)[ldn].tsb); buf = (unsigned char *) (&(ld(shpnt)[ldn].buf)); ld(shpnt)[ldn].tsb.dev_status = 0; for (retr = 0; retr < 3; retr++) { /*fill scb with read capacity command */ scb->command = IM_READ_CAPACITY_CMD; scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_READ_CONTROL | IM_RETRY_ENABLE | IM_BYPASS_BUFFER; last_scsi_command(shpnt)[ldn] = IM_READ_CAPACITY_CMD; last_scsi_type(shpnt)[ldn] = IM_SCB; scb->sys_buf_adr = isa_virt_to_bus(buf); scb->sys_buf_length = 8; scb->tsb_adr = isa_virt_to_bus(tsb); /*issue scb to passed ldn, and busy wait for interrupt */ got_interrupt(shpnt) = 0; issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); while (!got_interrupt(shpnt)) barrier(); /*if got capacity, get block length and return one device found */ if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) return 1; } /*if all three retries failed, return "no device at this ldn" */ if (retr >= 3) return 0; else return 1; } static int get_pos_info(struct Scsi_Host *shpnt) { int retr; struct im_scb *scb; struct im_tsb *tsb; unsigned char *buf; scb = &(ld(shpnt)[MAX_LOG_DEV].scb); tsb = &(ld(shpnt)[MAX_LOG_DEV].tsb); buf = (unsigned char *) (&(ld(shpnt)[MAX_LOG_DEV].buf)); ld(shpnt)[MAX_LOG_DEV].tsb.dev_status = 0; for (retr = 0; retr < 3; retr++) { /*fill scb with get_pos_info command */ scb->command = IM_GET_POS_INFO_CMD; scb->enable = IM_READ_CONTROL | IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE | IM_BYPASS_BUFFER; last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_GET_POS_INFO_CMD; last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_SCB; scb->sys_buf_adr = isa_virt_to_bus(buf); if (special(shpnt) == IBM_SCSI2_FW) scb->sys_buf_length = 256; /* get all info from F/W adapter */ else scb->sys_buf_length = 18; /* get exactly 18 bytes for other SCSI */ scb->tsb_adr = isa_virt_to_bus(tsb); /*issue scb to ldn=15, and busy wait for interrupt */ got_interrupt(shpnt) = 0; issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | MAX_LOG_DEV); /* FIXME: timeout */ while (!got_interrupt(shpnt)) barrier(); /*if got POS-stuff, get block length and return one device found */ if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES)) return 1; } /* if all three retries failed, return "no device at this ldn" */ if (retr >= 3) return 0; else return 1; } /* SCSI-immediate-command for assign. This functions maps/unmaps specific ldn-numbers on SCSI (PUN,LUN). It is needed for presetting of the subsystem and for dynamical remapping od ldns. */ static int immediate_assign(struct Scsi_Host *shpnt, unsigned int pun, unsigned int lun, unsigned int ldn, unsigned int operation) { int retr; unsigned long imm_cmd; for (retr = 0; retr < 3; retr++) { /* select mutation level of the SCSI-adapter */ switch (special(shpnt)) { case IBM_SCSI2_FW: imm_cmd = (unsigned long) (IM_ASSIGN_IMM_CMD); imm_cmd |= (unsigned long) ((lun & 7) << 24); imm_cmd |= (unsigned long) ((operation & 1) << 23); imm_cmd |= (unsigned long) ((pun & 7) << 20) | ((pun & 8) << 24); imm_cmd |= (unsigned long) ((ldn & 15) << 16); break; default: imm_cmd = inl(IM_CMD_REG(shpnt)); imm_cmd &= (unsigned long) (0xF8000000); /* keep reserved bits */ imm_cmd |= (unsigned long) (IM_ASSIGN_IMM_CMD); imm_cmd |= (unsigned long) ((lun & 7) << 24); imm_cmd |= (unsigned long) ((operation & 1) << 23); imm_cmd |= (unsigned long) ((pun & 7) << 20); imm_cmd |= (unsigned long) ((ldn & 15) << 16); break; } last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_ASSIGN_IMM_CMD; last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD; got_interrupt(shpnt) = 0; issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV); while (!got_interrupt(shpnt)) barrier(); /*if command successful, break */ if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) return 1; } if (retr >= 3) return 0; else return 1; } static int immediate_feature(struct Scsi_Host *shpnt, unsigned int speed, unsigned int timeout) { int retr; unsigned long imm_cmd; for (retr = 0; retr < 3; retr++) { /* select mutation level of the SCSI-adapter */ imm_cmd = IM_FEATURE_CTR_IMM_CMD; imm_cmd |= (unsigned long) ((speed & 0x7) << 29); imm_cmd |= (unsigned long) ((timeout & 0x1fff) << 16); last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_FEATURE_CTR_IMM_CMD; last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD; got_interrupt(shpnt) = 0; /* we need to run into command errors in order to probe for the * right speed! */ global_command_error_excuse = 1; issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV); /* FIXME: timeout */ while (!got_interrupt(shpnt)) barrier(); if (global_command_error_excuse == CMD_FAIL) { global_command_error_excuse = 0; return 2; } else global_command_error_excuse = 0; /*if command successful, break */ if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) return 1; } if (retr >= 3) return 0; else return 1; } #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET static int immediate_reset(struct Scsi_Host *shpnt, unsigned int ldn) { int retries; int ticks; unsigned long imm_command; for (retries = 0; retries < 3; retries++) { imm_command = inl(IM_CMD_REG(shpnt)); imm_command &= (unsigned long) (0xFFFF0000); /* keep reserved bits */ imm_command |= (unsigned long) (IM_RESET_IMM_CMD); last_scsi_command(shpnt)[ldn] = IM_RESET_IMM_CMD; last_scsi_type(shpnt)[ldn] = IM_IMM_CMD; got_interrupt(shpnt) = 0; reset_status(shpnt) = IM_RESET_IN_PROGRESS; issue_cmd(shpnt, (unsigned long) (imm_command), IM_IMM_CMD | ldn); ticks = IM_RESET_DELAY * HZ; while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks) { udelay((1 + 999 / HZ) * 1000); barrier(); } /* if reset did not complete, just complain */ if (!ticks) { printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY); reset_status(shpnt) = IM_RESET_FINISHED_OK; /* did not work, finish */ return 1; } /*if command successful, break */ if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED) return 1; } if (retries >= 3) return 0; else return 1; } #endif /* type-interpreter for physical device numbers */ static char *ti_p(int dev) { switch (dev) { case TYPE_IBM_SCSI_ADAPTER: return ("A"); case TYPE_DISK: return ("D"); case TYPE_TAPE: return ("T"); case TYPE_PROCESSOR: return ("P"); case TYPE_WORM: return ("W"); case TYPE_ROM: return ("R"); case TYPE_SCANNER: return ("S"); case TYPE_MOD: return ("M"); case TYPE_MEDIUM_CHANGER: return ("C"); case TYPE_NO_LUN: return ("+"); /* show NO_LUN */ } return ("-"); /* TYPE_NO_DEVICE and others */ } /* interpreter for logical device numbers (ldn) */ static char *ti_l(int val) { const char hex[16] = "0123456789abcdef"; static char answer[2]; answer[1] = (char) (0x0); if (val <= MAX_LOG_DEV) answer[0] = hex[val]; else answer[0] = '-'; return (char *) &answer; } /* transfers bitpattern of the feature command to values in MHz */ static char *ibmrate(unsigned int speed, int i) { switch (speed) { case 0: return i ? "5.00" : "10.00"; case 1: return i ? "4.00" : "8.00"; case 2: return i ? "3.33" : "6.66"; case 3: return i ? "2.86" : "5.00"; case 4: return i ? "2.50" : "4.00"; case 5: return i ? "2.22" : "3.10"; case 6: return i ? "2.00" : "2.50"; case 7: return i ? "1.82" : "2.00"; } return "---"; } static int probe_display(int what) { static int rotator = 0; const char rotor[] = "|/-\\"; if (!(display_mode & LED_DISP)) return 0; if (!what) { outl(0x20202020, MOD95_LED_PORT); outl(0x20202020, MOD95_LED_PORT + 4); } else { outb('S', MOD95_LED_PORT + 7); outb('C', MOD95_LED_PORT + 6); outb('S', MOD95_LED_PORT + 5); outb('I', MOD95_LED_PORT + 4); outb('i', MOD95_LED_PORT + 3); outb('n', MOD95_LED_PORT + 2); outb('i', MOD95_LED_PORT + 1); outb((char) (rotor[rotator]), MOD95_LED_PORT); rotator++; if (rotator > 3) rotator = 0; } return 0; } static int probe_bus_mode(struct Scsi_Host *shpnt) { struct im_pos_info *info; int num_bus = 0; int ldn; info = (struct im_pos_info *) (&(ld(shpnt)[MAX_LOG_DEV].buf)); if (get_pos_info(shpnt)) { if (info->connector_size & 0xf000) subsystem_connector_size(shpnt) = 16; else subsystem_connector_size(shpnt) = 32; num_bus |= (info->pos_4b & 8) >> 3; for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { if ((special(shpnt) == IBM_SCSI_WCACHE) || (special(shpnt) == IBM_7568_WCACHE)) { if (!((info->cache_stat >> ldn) & 1)) ld(shpnt)[ldn].cache_flag = 0; } if (!((info->retry_stat >> ldn) & 1)) ld(shpnt)[ldn].retry_flag = 0; } #ifdef IM_DEBUG_PROBE printk("IBM MCA SCSI: SCSI-Cache bits: "); for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { printk("%d", ld(shpnt)[ldn].cache_flag); } printk("\nIBM MCA SCSI: SCSI-Retry bits: "); for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { printk("%d", ld(shpnt)[ldn].retry_flag); } printk("\n"); #endif } return num_bus; } /* probing scsi devices */ static void check_devices(struct Scsi_Host *shpnt, int adaptertype) { int id, lun, ldn, ticks; int count_devices; /* local counter for connected device */ int max_pun; int num_bus; int speedrun; /* local adapter_speed check variable */ /* assign default values to certain variables */ ticks = 0; count_devices = 0; IBM_DS(shpnt).dyn_flag = 0; /* normally no need for dynamical ldn management */ IBM_DS(shpnt).total_errors = 0; /* set errorcounter to 0 */ next_ldn(shpnt) = 7; /* next ldn to be assigned is 7, because 0-6 is 'hardwired' */ /* initialize the very important driver-informational arrays/structs */ memset(ld(shpnt), 0, sizeof(ld(shpnt))); for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) { last_scsi_command(shpnt)[ldn] = NO_SCSI; /* emptify last SCSI-command storage */ last_scsi_type(shpnt)[ldn] = 0; ld(shpnt)[ldn].cache_flag = 1; ld(shpnt)[ldn].retry_flag = 1; } memset(get_ldn(shpnt), TYPE_NO_DEVICE, sizeof(get_ldn(shpnt))); /* this is essential ! */ memset(get_scsi(shpnt), TYPE_NO_DEVICE, sizeof(get_scsi(shpnt))); /* this is essential ! */ for (lun = 0; lun < 8; lun++) { /* mark the adapter at its pun on all luns */ get_scsi(shpnt)[subsystem_pun(shpnt)][lun] = TYPE_IBM_SCSI_ADAPTER; get_ldn(shpnt)[subsystem_pun(shpnt)][lun] = MAX_LOG_DEV; /* make sure, the subsystem ldn is active for all luns. */ } probe_display(0); /* Supercool display usage during SCSI-probing. */ /* This makes sense, when booting without any */ /* monitor connected on model XX95. */ /* STEP 1: */ adapter_speed(shpnt) = global_adapter_speed; speedrun = adapter_speed(shpnt); while (immediate_feature(shpnt, speedrun, adapter_timeout) == 2) { probe_display(1); if (speedrun == 7) panic("IBM MCA SCSI: Cannot set Synchronous-Transfer-Rate!\n"); speedrun++; if (speedrun > 7) speedrun = 7; } adapter_speed(shpnt) = speedrun; /* Get detailed information about the current adapter, necessary for * device operations: */ num_bus = probe_bus_mode(shpnt); /* num_bus contains only valid data for the F/W adapter! */ if (adaptertype == IBM_SCSI2_FW) { /* F/W SCSI adapter: */ /* F/W adapter PUN-space extension evaluation: */ if (num_bus) { printk(KERN_INFO "IBM MCA SCSI: Separate bus mode (wide-addressing enabled)\n"); subsystem_maxid(shpnt) = 16; } else { printk(KERN_INFO "IBM MCA SCSI: Combined bus mode (wide-addressing disabled)\n"); subsystem_maxid(shpnt) = 8; } printk(KERN_INFO "IBM MCA SCSI: Sync.-Rate (F/W: 20, Int.: 10, Ext.: %s) MBytes/s\n", ibmrate(speedrun, adaptertype)); } else /* all other IBM SCSI adapters: */ printk(KERN_INFO "IBM MCA SCSI: Synchronous-SCSI-Transfer-Rate: %s MBytes/s\n", ibmrate(speedrun, adaptertype)); /* assign correct PUN device space */ max_pun = subsystem_maxid(shpnt); #ifdef IM_DEBUG_PROBE printk("IBM MCA SCSI: Current SCSI-host index: %d\n", shpnt); printk("IBM MCA SCSI: Removing default logical SCSI-device mapping."); #else printk(KERN_INFO "IBM MCA SCSI: Dev. Order: %s, Mapping (takes <2min): ", (ibm_ansi_order) ? "ANSI" : "New"); #endif for (ldn = 0; ldn < MAX_LOG_DEV; ldn++) { probe_display(1); #ifdef IM_DEBUG_PROBE printk("."); #endif immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN); /* remove ldn (wherever) */ } lun = 0; /* default lun is 0 */ #ifndef IM_DEBUG_PROBE printk("cleared,"); #endif /* STEP 2: */ #ifdef IM_DEBUG_PROBE printk("\nIBM MCA SCSI: Scanning SCSI-devices."); #endif for (id = 0; id < max_pun; id++) #ifdef CONFIG_SCSI_MULTI_LUN for (lun = 0; lun < 8; lun++) #endif { probe_display(1); #ifdef IM_DEBUG_PROBE printk("."); #endif if (id != subsystem_pun(shpnt)) { /* if pun is not the adapter: */ /* set ldn=0 to pun,lun */ immediate_assign(shpnt, id, lun, PROBE_LDN, SET_LDN); if (device_inquiry(shpnt, PROBE_LDN)) { /* probe device */ get_scsi(shpnt)[id][lun] = (unsigned char) (ld(shpnt)[PROBE_LDN].buf[0]); /* entry, even for NO_LUN */ if (ld(shpnt)[PROBE_LDN].buf[0] != TYPE_NO_LUN) count_devices++; /* a existing device is found */ } /* remove ldn */ immediate_assign(shpnt, id, lun, PROBE_LDN, REMOVE_LDN); } } #ifndef IM_DEBUG_PROBE printk("scanned,"); #endif /* STEP 3: */ #ifdef IM_DEBUG_PROBE printk("\nIBM MCA SCSI: Mapping SCSI-devices."); #endif ldn = 0; lun = 0; #ifdef CONFIG_SCSI_MULTI_LUN for (lun = 0; lun < 8 && ldn < MAX_LOG_DEV; lun++) #endif for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) { probe_display(1); #ifdef IM_DEBUG_PROBE printk("."); #endif if (id != subsystem_pun(shpnt)) { if (get_scsi(shpnt)[id][lun] != TYPE_NO_LUN && get_scsi(shpnt)[id][lun] != TYPE_NO_DEVICE) { /* Only map if accepted type. Always enter for lun == 0 to get no gaps into ldn-mapping for ldn<7. */ immediate_assign(shpnt, id, lun, ldn, SET_LDN); get_ldn(shpnt)[id][lun] = ldn; /* map ldn */ if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) { #ifdef CONFIG_IBMMCA_SCSI_DEV_RESET printk("resetting device at ldn=%x ... ", ldn); immediate_reset(shpnt, ldn); #endif ldn++; } else { /* device vanished, probably because we don't know how to * handle it or because it has problems */ if (lun > 0) { /* remove mapping */ get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE; immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN); } else ldn++; } } else if (lun == 0) { /* map lun == 0, even if no device exists */ immediate_assign(shpnt, id, lun, ldn, SET_LDN); get_ldn(shpnt)[id][lun] = ldn; /* map ldn */ ldn++; } } } /* STEP 4: */ /* map remaining ldns to non-existing devices */ for (lun = 1; lun < 8 && ldn < MAX_LOG_DEV; lun++) for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) { if (get_scsi(shpnt)[id][lun] == TYPE_NO_LUN || get_scsi(shpnt)[id][lun] == TYPE_NO_DEVICE) { probe_display(1); /* Map remaining ldns only to NON-existing pun,lun combinations to make sure an inquiry will fail. For MULTI_LUN, it is needed to avoid adapter autonome SCSI-remapping. */ immediate_assign(shpnt, id, lun, ldn, SET_LDN); get_ldn(shpnt)[id][lun] = ldn; ldn++; } } #ifndef IM_DEBUG_PROBE printk("mapped."); #endif printk("\n"); #ifdef IM_DEBUG_PROBE if (ibm_ansi_order) printk("IBM MCA SCSI: Device order: IBM/ANSI (pun=7 is first).\n"); else printk("IBM MCA SCSI: Device order: New Industry Standard (pun=0 is first).\n"); #endif #ifdef IM_DEBUG_PROBE /* Show the physical and logical mapping during boot. */ printk("IBM MCA SCSI: Determined SCSI-device-mapping:\n"); printk(" Physical SCSI-Device Map Logical SCSI-Device Map\n"); printk("ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n"); for (id = 0; id < max_pun; id++) { printk("%2d ", id); for (lun = 0; lun < 8; lun++) printk("%2s ", ti_p(get_scsi(shpnt)[id][lun])); printk(" %2d ", id); for (lun = 0; lun < 8; lun++) printk("%2s ", ti_l(get_ldn(shpnt)[id][lun])); printk("\n"); } #endif /* assign total number of found SCSI-devices to the statistics struct */ IBM_DS(shpnt).total_scsi_devices = count_devices; /* decide for output in /proc-filesystem, if the configuration of SCSI-devices makes dynamical reassignment of devices necessary */ if (count_devices >= MAX_LOG_DEV) IBM_DS(shpnt).dyn_flag = 1; /* dynamical assignment is necessary */ else IBM_DS(shpnt).dyn_flag = 0; /* dynamical assignment is not necessary */ /* If no SCSI-devices are assigned, return 1 in order to cause message. */ if (ldn == 0) printk("IBM MCA SCSI: Warning: No SCSI-devices found/assigned!\n"); /* reset the counters for statistics on the current adapter */ IBM_DS(shpnt).scbs = 0; IBM_DS(shpnt).long_scbs = 0; IBM_DS(shpnt).total_accesses = 0; IBM_DS(shpnt).total_interrupts = 0; IBM_DS(shpnt).dynamical_assignments = 0; memset(IBM_DS(shpnt).ldn_access, 0x0, sizeof(IBM_DS(shpnt).ldn_access)); memset(IBM_DS(shpnt).ldn_read_access, 0x0, sizeof(IBM_DS(shpnt).ldn_read_access)); memset(IBM_DS(shpnt).ldn_write_access, 0x0, sizeof(IBM_DS(shpnt).ldn_write_access)); memset(IBM_DS(shpnt).ldn_inquiry_access, 0x0, sizeof(IBM_DS(shpnt).ldn_inquiry_access)); memset(IBM_DS(shpnt).ldn_modeselect_access, 0x0, sizeof(IBM_DS(shpnt).ldn_modeselect_access)); memset(IBM_DS(shpnt).ldn_assignments, 0x0, sizeof(IBM_DS(shpnt).ldn_assignments)); probe_display(0); return; } static int device_exists(struct Scsi_Host *shpnt, int ldn, int *block_length, int *device_type) { unsigned char *buf; /* if no valid device found, return immediately with 0 */ if (!(device_inquiry(shpnt, ldn))) return 0; buf = (unsigned char *) (&(ld(shpnt)[ldn].buf)); if (*buf == TYPE_ROM) { *device_type = TYPE_ROM; *block_length = 2048; /* (standard blocksize for yellow-/red-book) */ return 1; } if (*buf == TYPE_WORM) { *device_type = TYPE_WORM; *block_length = 2048; return 1; } if (*buf == TYPE_DISK) { *device_type = TYPE_DISK; if (read_capacity(shpnt, ldn)) { *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24); return 1; } else return 0; } if (*buf == TYPE_MOD) { *device_type = TYPE_MOD; if (read_capacity(shpnt, ldn)) { *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24); return 1; } else return 0; } if (*buf == TYPE_TAPE) { *device_type = TYPE_TAPE; *block_length = 0; /* not in use (setting by mt and mtst in op.) */ return 1; } if (*buf == TYPE_PROCESSOR) { *device_type = TYPE_PROCESSOR; *block_length = 0; /* they set their stuff on drivers */ return 1; } if (*buf == TYPE_SCANNER) { *device_type = TYPE_SCANNER; *block_length = 0; /* they set their stuff on drivers */ return 1; } if (*buf == TYPE_MEDIUM_CHANGER) { *device_type = TYPE_MEDIUM_CHANGER; *block_length = 0; /* One never knows, what to expect on a medium changer device. */ return 1; } return 0; } static void internal_ibmmca_scsi_setup(char *str, int *ints) { int i, j, io_base, id_base; char *token; io_base = 0; id_base = 0; if (str) { j = 0; while ((token = strsep(&str, ",")) != NULL) { if (!strcmp(token, "activity")) display_mode |= LED_ACTIVITY; if (!strcmp(token, "display")) display_mode |= LED_DISP; if (!strcmp(token, "adisplay")) display_mode |= LED_ADISP; if (!strcmp(token, "normal")) ibm_ansi_order = 0; if (!strcmp(token, "ansi")) ibm_ansi_order = 1; if (!strcmp(token, "fast")) global_adapter_speed = 0; if (!strcmp(token, "medium")) global_adapter_speed = 4; if (!strcmp(token, "slow")) global_adapter_speed = 7; if ((*token == '-') || (isdigit(*token))) { if (!(j % 2) && (io_base < IM_MAX_HOSTS)) io_port[io_base++] = simple_strtoul(token, NULL, 0); if ((j % 2) && (id_base < IM_MAX_HOSTS)) scsi_id[id_base++] = simple_strtoul(token, NULL, 0); j++; } } } else if (ints) { for (i = 0; i < IM_MAX_HOSTS && 2 * i + 2 < ints[0]; i++) { io_port[i] = ints[2 * i + 2]; scsi_id[i] = ints[2 * i + 2]; } } return; } #if 0 FIXME NEED TO MOVE TO SYSFS static int ibmmca_getinfo(char *buf, int slot, void *dev_id) { struct Scsi_Host *shpnt; int len, speciale, connectore, k; unsigned int pos[8]; unsigned long flags; struct Scsi_Host *dev = dev_id; spin_lock_irqsave(dev->host_lock, flags); shpnt = dev; /* assign host-structure to local pointer */ len = 0; /* set filled text-buffer index to 0 */ /* get the _special contents of the hostdata structure */ speciale = ((struct ibmmca_hostdata *) shpnt->hostdata)->_special; connectore = ((struct ibmmca_hostdata *) shpnt->hostdata)->_connector_size; for (k = 2; k < 4; k++) pos[k] = ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k]; if (speciale == FORCED_DETECTION) { /* forced detection */ len += sprintf(buf + len, "Adapter category: forced detected\n" "***************************************\n" "*** Forced detected SCSI Adapter ***\n" "*** No chip-information available ***\n" "***************************************\n"); } else if (speciale == INTEGRATED_SCSI) { /* if the integrated subsystem has been found automatically: */ len += sprintf(buf + len, "Adapter category: integrated\n" "Chip revision level: %d\n" "Chip status: %s\n" "8 kByte NVRAM status: %s\n", ((pos[2] & 0xf0) >> 4), (pos[2] & 1) ? "enabled" : "disabled", (pos[2] & 2) ? "locked" : "accessible"); } else if ((speciale >= 0) && (speciale < ARRAY_SIZE(subsys_list))) { /* if the subsystem is a slot adapter */ len += sprintf(buf + len, "Adapter category: slot-card\n" "ROM Segment Address: "); if ((pos[2] & 0xf0) == 0xf0) len += sprintf(buf + len, "off\n"); else len += sprintf(buf + len, "0x%x\n", ((pos[2] & 0xf0) << 13) + 0xc0000); len += sprintf(buf + len, "Chip status: %s\n", (pos[2] & 1) ? "enabled" : "disabled"); len += sprintf(buf + len, "Adapter I/O Offset: 0x%x\n", ((pos[2] & 0x0e) << 2)); } else { len += sprintf(buf + len, "Adapter category: unknown\n"); } /* common subsystem information to write to the slotn file */ len += sprintf(buf + len, "Subsystem PUN: %d\n", shpnt->this_id); len += sprintf(buf + len, "I/O base address range: 0x%x-0x%x\n", (unsigned int) (shpnt->io_port), (unsigned int) (shpnt->io_port + 7)); len += sprintf(buf + len, "MCA-slot size: %d bits", connectore); /* Now make sure, the bufferlength is devidable by 4 to avoid * paging problems of the buffer. */ while (len % sizeof(int) != (sizeof(int) - 1)) len += sprintf(buf + len, " "); len += sprintf(buf + len, "\n"); spin_unlock_irqrestore(shpnt->host_lock, flags); return len; } #endif static struct scsi_host_template ibmmca_driver_template = { .proc_name = "ibmmca", .proc_info = ibmmca_proc_info, .name = "IBM SCSI-Subsystem", .queuecommand = ibmmca_queuecommand, .eh_abort_handler = ibmmca_abort, .eh_host_reset_handler = ibmmca_host_reset, .bios_param = ibmmca_biosparam, .can_queue = 16, .this_id = 7, .sg_tablesize = 16, .cmd_per_lun = 1, .use_clustering = ENABLE_CLUSTERING, }; static int ibmmca_probe(struct device *dev) { struct Scsi_Host *shpnt; int port, id, i, j, k, irq, enabled, ret = -EINVAL; struct mca_device *mca_dev = to_mca_device(dev); const char *description = ibmmca_description[mca_dev->index]; /* First of all, print the version number of the driver. This is * important to allow better user bugreports in case of already * having problems with the MCA_bus probing. */ printk(KERN_INFO "IBM MCA SCSI: Version %s\n", IBMMCA_SCSI_DRIVER_VERSION); /* The POS2-register of all PS/2 model SCSI-subsystems has the following * interpretation of bits: * Bit 7 - 4 : Chip Revision ID (Release) * Bit 3 - 2 : Reserved * Bit 1 : 8k NVRAM Disabled * Bit 0 : Chip Enable (EN-Signal) * The POS3-register is interpreted as follows: * Bit 7 - 5 : SCSI ID * Bit 4 : Reserved = 0 * Bit 3 - 0 : Reserved = 0 * (taken from "IBM, PS/2 Hardware Interface Technical Reference, Common * Interfaces (1991)"). * In short words, this means, that IBM PS/2 machines only support * 1 single subsystem by default. The slot-adapters must have another * configuration on pos2. Here, one has to assume the following * things for POS2-register: * Bit 7 - 4 : Chip Revision ID (Release) * Bit 3 - 1 : port offset factor * Bit 0 : Chip Enable (EN-Signal) * As I found a patch here, setting the IO-registers to 0x3540 forced, * as there was a 0x05 in POS2 on a model 56, I assume, that the * port 0x3540 must be fix for integrated SCSI-controllers. * Ok, this discovery leads to the following implementation: (M.Lang) */ /* first look for the IBM SCSI integrated subsystem on the motherboard */ for (j = 0; j < 8; j++) /* read the pos-information */ pos[j] = mca_device_read_pos(mca_dev, j); id = (pos[3] & 0xe0) >> 5; /* this is correct and represents the PUN */ enabled = (pos[2] &0x01); if (!enabled) { printk(KERN_WARNING "IBM MCA SCSI: WARNING - Your SCSI-subsystem is disabled!\n"); printk(KERN_WARNING " SCSI-operations may not work.\n"); } /* pos2 = pos3 = 0xff if there is no integrated SCSI-subsystem present, but * if we ignore the settings of all surrounding pos registers, it is not * completely sufficient to only check pos2 and pos3. */ /* Therefore, now the following if statement is used to * make sure, we see a real integrated onboard SCSI-interface and no * internal system information, which gets mapped to some pos registers * on models 95xx. */ if (mca_dev->slot == MCA_INTEGSCSI && ((!pos[0] && !pos[1] && pos[2] > 0 && pos[3] > 0 && !pos[4] && !pos[5] && !pos[6] && !pos[7]) || (pos[0] == 0xff && pos[1] == 0xff && pos[2] < 0xff && pos[3] < 0xff && pos[4] == 0xff && pos[5] == 0xff && pos[6] == 0xff && pos[7] == 0xff))) { irq = IM_IRQ; port = IM_IO_PORT; } else { irq = IM_IRQ; port = IM_IO_PORT + ((pos[2] &0x0e) << 2); if ((mca_dev->index == IBM_SCSI2_FW) && (pos[6] != 0)) { printk(KERN_ERR "IBM MCA SCSI: ERROR - Wrong POS(6)-register setting!\n"); printk(KERN_ERR " Impossible to determine adapter PUN!\n"); printk(KERN_ERR " Guessing adapter PUN = 7.\n"); id = 7; } else { id = (pos[3] & 0xe0) >> 5; /* get subsystem PUN */ if (mca_dev->index == IBM_SCSI2_FW) { id |= (pos[3] & 0x10) >> 1; /* get subsystem PUN high-bit * for F/W adapters */ } } if ((mca_dev->index == IBM_SCSI2_FW) && (pos[4] & 0x01) && (pos[6] == 0)) { /* IRQ11 is used by SCSI-2 F/W Adapter/A */ printk(KERN_DEBUG "IBM MCA SCSI: SCSI-2 F/W adapter needs IRQ 11.\n"); irq = IM_IRQ_FW; } } /* give detailed information on the subsystem. This helps me * additionally during debugging and analyzing bug-reports. */ printk(KERN_INFO "IBM MCA SCSI: %s found, io=0x%x, scsi id=%d,\n", description, port, id); if (mca_dev->slot == MCA_INTEGSCSI) printk(KERN_INFO " chip rev.=%d, 8K NVRAM=%s, subsystem=%s\n", ((pos[2] & 0xf0) >> 4), (pos[2] & 2) ? "locked" : "accessible", (pos[2] & 1) ? "enabled." : "disabled."); else { if ((pos[2] & 0xf0) == 0xf0) printk(KERN_DEBUG " ROM Addr.=off,"); else printk(KERN_DEBUG " ROM Addr.=0x%x,", ((pos[2] & 0xf0) << 13) + 0xc0000); printk(KERN_DEBUG " port-offset=0x%x, subsystem=%s\n", ((pos[2] & 0x0e) << 2), (pos[2] & 1) ? "enabled." : "disabled."); } /* check I/O region */ if (!request_region(port, IM_N_IO_PORT, description)) { printk(KERN_ERR "IBM MCA SCSI: Unable to get I/O region 0x%x-0x%x (%d ports).\n", port, port + IM_N_IO_PORT - 1, IM_N_IO_PORT); goto out_fail; } /* register host */ shpnt = scsi_host_alloc(&ibmmca_driver_template, sizeof(struct ibmmca_hostdata)); if (!shpnt) { printk(KERN_ERR "IBM MCA SCSI: Unable to register host.\n"); goto out_release; } dev_set_drvdata(dev, shpnt); if(request_irq(irq, interrupt_handler, IRQF_SHARED, description, dev)) { printk(KERN_ERR "IBM MCA SCSI: failed to request interrupt %d\n", irq); goto out_free_host; } /* request I/O region */ special(shpnt) = mca_dev->index; /* important assignment or else crash! */ subsystem_connector_size(shpnt) = 0; /* preset slot-size */ shpnt->irq = irq; /* assign necessary stuff for the adapter */ shpnt->io_port = port; shpnt->n_io_port = IM_N_IO_PORT; shpnt->this_id = id; shpnt->max_id = 8; /* 8 PUNs are default */ /* now, the SCSI-subsystem is connected to Linux */ #ifdef IM_DEBUG_PROBE ctrl = (unsigned int) (inb(IM_CTR_REG(found))); /* get control-register status */ printk("IBM MCA SCSI: Control Register contents: %x, status: %x\n", ctrl, inb(IM_STAT_REG(found))); printk("IBM MCA SCSI: This adapters' POS-registers: "); for (i = 0; i < 8; i++) printk("%x ", pos[i]); printk("\n"); #endif reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS; for (i = 0; i < 16; i++) /* reset the tables */ for (j = 0; j < 8; j++) get_ldn(shpnt)[i][j] = MAX_LOG_DEV; /* check which logical devices exist */ /* after this line, local interrupting is possible: */ local_checking_phase_flag(shpnt) = 1; check_devices(shpnt, mca_dev->index); /* call by value, using the global variable hosts */ local_checking_phase_flag(shpnt) = 0; /* an ibm mca subsystem has been detected */ for (k = 2; k < 7; k++) ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k] = pos[k]; ((struct ibmmca_hostdata *) shpnt->hostdata)->_special = INTEGRATED_SCSI; mca_device_set_name(mca_dev, description); /* FIXME: NEED TO REPLUMB TO SYSFS mca_set_adapter_procfn(MCA_INTEGSCSI, (MCA_ProcFn) ibmmca_getinfo, shpnt); */ mca_device_set_claim(mca_dev, 1); if (scsi_add_host(shpnt, dev)) { dev_printk(KERN_ERR, dev, "IBM MCA SCSI: scsi_add_host failed\n"); goto out_free_host; } scsi_scan_host(shpnt); return 0; out_free_host: scsi_host_put(shpnt); out_release: release_region(port, IM_N_IO_PORT); out_fail: return ret; } static int __devexit ibmmca_remove(struct device *dev) { struct Scsi_Host *shpnt = dev_get_drvdata(dev); scsi_remove_host(shpnt); release_region(shpnt->io_port, shpnt->n_io_port); free_irq(shpnt->irq, dev); scsi_host_put(shpnt); return 0; } /* The following routine is the SCSI command queue for the midlevel driver */ static int ibmmca_queuecommand(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *)) { unsigned int ldn; unsigned int scsi_cmd; struct im_scb *scb; struct Scsi_Host *shpnt; int current_ldn; int id, lun; int target; int max_pun; int i; struct scatterlist *sg; shpnt = cmd->device->host; max_pun = subsystem_maxid(shpnt); if (ibm_ansi_order) { target = max_pun - 1 - cmd->device->id; if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt))) target--; else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt))) target++; } else target = cmd->device->id; /* if (target,lun) is NO LUN or not existing at all, return error */ if ((get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_LUN) || (get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_DEVICE)) { cmd->result = DID_NO_CONNECT << 16; if (done) done(cmd); return 0; } /*if (target,lun) unassigned, do further checks... */ ldn = get_ldn(shpnt)[target][cmd->device->lun]; if (ldn >= MAX_LOG_DEV) { /* on invalid ldn do special stuff */ if (ldn > MAX_LOG_DEV) { /* dynamical remapping if ldn unassigned */ current_ldn = next_ldn(shpnt); /* stop-value for one circle */ while (ld(shpnt)[next_ldn(shpnt)].cmd) { /* search for a occupied, but not in */ /* command-processing ldn. */ next_ldn(shpnt)++; if (next_ldn(shpnt) >= MAX_LOG_DEV) next_ldn(shpnt) = 7; if (current_ldn == next_ldn(shpnt)) { /* One circle done ? */ /* no non-processing ldn found */ scmd_printk(KERN_WARNING, cmd, "IBM MCA SCSI: Cannot assign SCSI-device dynamically!\n" " On ldn 7-14 SCSI-commands everywhere in progress.\n" " Reporting DID_NO_CONNECT for device.\n"); cmd->result = DID_NO_CONNECT << 16; /* return no connect */ if (done) done(cmd); return 0; } } /* unmap non-processing ldn */ for (id = 0; id < max_pun; id++) for (lun = 0; lun < 8; lun++) { if (get_ldn(shpnt)[id][lun] == next_ldn(shpnt)) { get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE; get_scsi(shpnt)[id][lun] = TYPE_NO_DEVICE; /* unmap entry */ } } /* set reduced interrupt_handler-mode for checking */ local_checking_phase_flag(shpnt) = 1; /* map found ldn to pun,lun */ get_ldn(shpnt)[target][cmd->device->lun] = next_ldn(shpnt); /* change ldn to the right value, that is now next_ldn */ ldn = next_ldn(shpnt); /* unassign all ldns (pun,lun,ldn does not matter for remove) */ immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN); /* set only LDN for remapped device */ immediate_assign(shpnt, target, cmd->device->lun, ldn, SET_LDN); /* get device information for ld[ldn] */ if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) { ld(shpnt)[ldn].cmd = NULL; /* To prevent panic set 0, because devices that were not assigned, should have nothing in progress. */ get_scsi(shpnt)[target][cmd->device->lun] = ld(shpnt)[ldn].device_type; /* increase assignment counters for statistics in /proc */ IBM_DS(shpnt).dynamical_assignments++; IBM_DS(shpnt).ldn_assignments[ldn]++; } else /* panic here, because a device, found at boottime has vanished */ panic("IBM MCA SCSI: ldn=0x%x, SCSI-device on (%d,%d) vanished!\n", ldn, target, cmd->device->lun); /* unassign again all ldns (pun,lun,ldn does not matter for remove) */ immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN); /* remap all ldns, as written in the pun/lun table */ lun = 0; #ifdef CONFIG_SCSI_MULTI_LUN for (lun = 0; lun < 8; lun++) #endif for (id = 0; id < max_pun; id++) { if (get_ldn(shpnt)[id][lun] <= MAX_LOG_DEV) immediate_assign(shpnt, id, lun, get_ldn(shpnt)[id][lun], SET_LDN); } /* set back to normal interrupt_handling */ local_checking_phase_flag(shpnt) = 0; #ifdef IM_DEBUG_PROBE /* Information on syslog terminal */ printk("IBM MCA SCSI: ldn=0x%x dynamically reassigned to (%d,%d).\n", ldn, target, cmd->device->lun); #endif /* increase next_ldn for next dynamical assignment */ next_ldn(shpnt)++; if (next_ldn(shpnt) >= MAX_LOG_DEV) next_ldn(shpnt) = 7; } else { /* wall against Linux accesses to the subsystem adapter */ cmd->result = DID_BAD_TARGET << 16; if (done) done(cmd); return 0; } } /*verify there is no command already in progress for this log dev */ if (ld(shpnt)[ldn].cmd) panic("IBM MCA SCSI: cmd already in progress for this ldn.\n"); /*save done in cmd, and save cmd for the interrupt handler */ cmd->scsi_done = done; ld(shpnt)[ldn].cmd = cmd; /*fill scb information independent of the scsi command */ scb = &(ld(shpnt)[ldn].scb); ld(shpnt)[ldn].tsb.dev_status = 0; scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE; scb->tsb_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].tsb)); scsi_cmd = cmd->cmnd[0]; if (scsi_sg_count(cmd)) { BUG_ON(scsi_sg_count(cmd) > 16); scsi_for_each_sg(cmd, sg, scsi_sg_count(cmd), i) { ld(shpnt)[ldn].sge[i].address = (void *) (isa_page_to_bus(sg_page(sg)) + sg->offset); ld(shpnt)[ldn].sge[i].byte_length = sg->length; } scb->enable |= IM_POINTER_TO_LIST; scb->sys_buf_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].sge[0])); scb->sys_buf_length = scsi_sg_count(cmd) * sizeof(struct im_sge); } else { scb->sys_buf_adr = isa_virt_to_bus(scsi_sglist(cmd)); /* recent Linux midlevel SCSI places 1024 byte for inquiry * command. Far too much for old PS/2 hardware. */ switch (scsi_cmd) { /* avoid command errors by setting bufferlengths to * ANSI-standard. Beware of forcing it to 255, * this could SEGV the kernel!!! */ case INQUIRY: case REQUEST_SENSE: case MODE_SENSE: case MODE_SELECT: if (scsi_bufflen(cmd) > 255) scb->sys_buf_length = 255; else scb->sys_buf_length = scsi_bufflen(cmd); break; case TEST_UNIT_READY: scb->sys_buf_length = 0; break; default: scb->sys_buf_length = scsi_bufflen(cmd); break; } } /*fill scb information dependent on scsi command */ #ifdef IM_DEBUG_CMD printk("issue scsi cmd=%02x to ldn=%d\n", scsi_cmd, ldn); #endif /* for specific device-type debugging: */ #ifdef IM_DEBUG_CMD_SPEC_DEV if (ld(shpnt)[ldn].device_type == IM_DEBUG_CMD_DEVICE) printk("(SCSI-device-type=0x%x) issue scsi cmd=%02x to ldn=%d\n", ld(shpnt)[ldn].device_type, scsi_cmd, ldn); #endif /* for possible panics store current command */ last_scsi_command(shpnt)[ldn] = scsi_cmd; last_scsi_type(shpnt)[ldn] = IM_SCB; /* update statistical info */ IBM_DS(shpnt).total_accesses++; IBM_DS(shpnt).ldn_access[ldn]++; switch (scsi_cmd) { case READ_6: case WRITE_6: case READ_10: case WRITE_10: case READ_12: case WRITE_12: /* Distinguish between disk and other devices. Only disks (that are the most frequently accessed devices) should be supported by the IBM-SCSI-Subsystem commands. */ switch (ld(shpnt)[ldn].device_type) { case TYPE_DISK: /* for harddisks enter here ... */ case TYPE_MOD: /* ... try it also for MO-drives (send flames as */ /* you like, if this won't work.) */ if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12) { /* read command preparations */ scb->enable |= IM_READ_CONTROL; IBM_DS(shpnt).ldn_read_access[ldn]++; /* increase READ-access on ldn stat. */ scb->command = IM_READ_DATA_CMD | IM_NO_DISCONNECT; } else { /* write command preparations */ IBM_DS(shpnt).ldn_write_access[ldn]++; /* increase write-count on ldn stat. */ scb->command = IM_WRITE_DATA_CMD | IM_NO_DISCONNECT; } if (scsi_cmd == READ_6 || scsi_cmd == WRITE_6) { scb->u1.log_blk_adr = (((unsigned) cmd->cmnd[3]) << 0) | (((unsigned) cmd->cmnd[2]) << 8) | ((((unsigned) cmd->cmnd[1]) & 0x1f) << 16); scb->u2.blk.count = (unsigned) cmd->cmnd[4]; } else { scb->u1.log_blk_adr = (((unsigned) cmd->cmnd[5]) << 0) | (((unsigned) cmd->cmnd[4]) << 8) | (((unsigned) cmd->cmnd[3]) << 16) | (((unsigned) cmd->cmnd[2]) << 24); scb->u2.blk.count = (((unsigned) cmd->cmnd[8]) << 0) | (((unsigned) cmd->cmnd[7]) << 8); } last_scsi_logical_block(shpnt)[ldn] = scb->u1.log_blk_adr; last_scsi_blockcount(shpnt)[ldn] = scb->u2.blk.count; scb->u2.blk.length = ld(shpnt)[ldn].block_length; break; /* for other devices, enter here. Other types are not known by Linux! TYPE_NO_LUN is forbidden as valid device. */ case TYPE_ROM: case TYPE_TAPE: case TYPE_PROCESSOR: case TYPE_WORM: case TYPE_SCANNER: case TYPE_MEDIUM_CHANGER: /* If there is a sequential-device, IBM recommends to use IM_OTHER_SCSI_CMD_CMD instead of subsystem READ/WRITE. This includes CD-ROM devices, too, due to the partial sequential read capabilities. */ scb->command = IM_OTHER_SCSI_CMD_CMD; if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12) /* enable READ */ scb->enable |= IM_READ_CONTROL; scb->enable |= IM_BYPASS_BUFFER; scb->u1.scsi_cmd_length = cmd->cmd_len; memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; /* Read/write on this non-disk devices is also displayworthy, so flash-up the LED/display. */ break; } break; case INQUIRY: IBM_DS(shpnt).ldn_inquiry_access[ldn]++; scb->command = IM_DEVICE_INQUIRY_CMD; scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; scb->u1.log_blk_adr = 0; break; case TEST_UNIT_READY: scb->command = IM_OTHER_SCSI_CMD_CMD; scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; scb->u1.log_blk_adr = 0; scb->u1.scsi_cmd_length = 6; memcpy(scb->u2.scsi_command, cmd->cmnd, 6); last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; break; case READ_CAPACITY: /* the length of system memory buffer must be exactly 8 bytes */ scb->command = IM_READ_CAPACITY_CMD; scb->enable |= IM_READ_CONTROL | IM_BYPASS_BUFFER; if (scb->sys_buf_length > 8) scb->sys_buf_length = 8; break; /* Commands that need read-only-mode (system <- device): */ case REQUEST_SENSE: scb->command = IM_REQUEST_SENSE_CMD; scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; break; /* Commands that need write-only-mode (system -> device): */ case MODE_SELECT: case MODE_SELECT_10: IBM_DS(shpnt).ldn_modeselect_access[ldn]++; scb->command = IM_OTHER_SCSI_CMD_CMD; scb->enable |= IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; /*Select needs WRITE-enabled */ scb->u1.scsi_cmd_length = cmd->cmd_len; memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; break; /* For other commands, read-only is useful. Most other commands are running without an input-data-block. */ default: scb->command = IM_OTHER_SCSI_CMD_CMD; scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; scb->u1.scsi_cmd_length = cmd->cmd_len; memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len); last_scsi_type(shpnt)[ldn] = IM_LONG_SCB; break; } /*issue scb command, and return */ if (++disk_rw_in_progress == 1) PS2_DISK_LED_ON(shpnt->host_no, target); if (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB) { issue_cmd(shpnt, isa_virt_to_bus(scb), IM_LONG_SCB | ldn); IBM_DS(shpnt).long_scbs++; } else { issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn); IBM_DS(shpnt).scbs++; } return 0; } static int __ibmmca_abort(Scsi_Cmnd * cmd) { /* Abort does not work, as the adapter never generates an interrupt on * whatever situation is simulated, even when really pending commands * are running on the adapters' hardware ! */ struct Scsi_Host *shpnt; unsigned int ldn; void (*saved_done) (Scsi_Cmnd *); int target; int max_pun; unsigned long imm_command; #ifdef IM_DEBUG_PROBE printk("IBM MCA SCSI: Abort subroutine called...\n"); #endif shpnt = cmd->device->host; max_pun = subsystem_maxid(shpnt); if (ibm_ansi_order) { target = max_pun - 1 - cmd->device->id; if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt))) target--; else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt))) target++; } else target = cmd->device->id; /* get logical device number, and disable system interrupts */ printk(KERN_WARNING "IBM MCA SCSI: Sending abort to device pun=%d, lun=%d.\n", target, cmd->device->lun); ldn = get_ldn(shpnt)[target][cmd->device->lun]; /*if cmd for this ldn has already finished, no need to abort */ if (!ld(shpnt)[ldn].cmd) { return SUCCESS; } /* Clear ld.cmd, save done function, install internal done, * send abort immediate command (this enables sys. interrupts), * and wait until the interrupt arrives. */ saved_done = cmd->scsi_done; cmd->scsi_done = internal_done; cmd->SCp.Status = 0; last_scsi_command(shpnt)[ldn] = IM_ABORT_IMM_CMD; last_scsi_type(shpnt)[ldn] = IM_IMM_CMD; imm_command = inl(IM_CMD_REG(shpnt)); imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */ imm_command |= (unsigned long) (IM_ABORT_IMM_CMD); /* must wait for attention reg not busy */ /* FIXME - timeout, politeness */ while (1) { if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) break; } /* write registers and enable system interrupts */ outl(imm_command, IM_CMD_REG(shpnt)); outb(IM_IMM_CMD | ldn, IM_ATTN_REG(shpnt)); #ifdef IM_DEBUG_PROBE printk("IBM MCA SCSI: Abort queued to adapter...\n"); #endif spin_unlock_irq(shpnt->host_lock); while (!cmd->SCp.Status) yield(); spin_lock_irq(shpnt->host_lock); cmd->scsi_done = saved_done; #ifdef IM_DEBUG_PROBE printk("IBM MCA SCSI: Abort returned with adapter response...\n"); #endif /*if abort went well, call saved done, then return success or error */ if (cmd->result == (DID_ABORT << 16)) { cmd->result |= DID_ABORT << 16; if (cmd->scsi_done) (cmd->scsi_done) (cmd); ld(shpnt)[ldn].cmd = NULL; #ifdef IM_DEBUG_PROBE printk("IBM MCA SCSI: Abort finished with success.\n"); #endif return SUCCESS; } else { cmd->result |= DID_NO_CONNECT << 16; if (cmd->scsi_done) (cmd->scsi_done) (cmd); ld(shpnt)[ldn].cmd = NULL; #ifdef IM_DEBUG_PROBE printk("IBM MCA SCSI: Abort failed.\n"); #endif return FAILED; } } static int ibmmca_abort(Scsi_Cmnd * cmd) { struct Scsi_Host *shpnt = cmd->device->host; int rc; spin_lock_irq(shpnt->host_lock); rc = __ibmmca_abort(cmd); spin_unlock_irq(shpnt->host_lock); return rc; } static int __ibmmca_host_reset(Scsi_Cmnd * cmd) { struct Scsi_Host *shpnt; Scsi_Cmnd *cmd_aid; int ticks, i; unsigned long imm_command; BUG_ON(cmd == NULL); ticks = IM_RESET_DELAY * HZ; shpnt = cmd->device->host; if (local_checking_phase_flag(shpnt)) { printk(KERN_WARNING "IBM MCA SCSI: unable to reset while checking devices.\n"); return FAILED; } /* issue reset immediate command to subsystem, and wait for interrupt */ printk("IBM MCA SCSI: resetting all devices.\n"); reset_status(shpnt) = IM_RESET_IN_PROGRESS; last_scsi_command(shpnt)[0xf] = IM_RESET_IMM_CMD; last_scsi_type(shpnt)[0xf] = IM_IMM_CMD; imm_command = inl(IM_CMD_REG(shpnt)); imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */ imm_command |= (unsigned long) (IM_RESET_IMM_CMD); /* must wait for attention reg not busy */ while (1) { if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY)) break; spin_unlock_irq(shpnt->host_lock); yield(); spin_lock_irq(shpnt->host_lock); } /*write registers and enable system interrupts */ outl(imm_command, IM_CMD_REG(shpnt)); outb(IM_IMM_CMD | 0xf, IM_ATTN_REG(shpnt)); /* wait for interrupt finished or intr_stat register to be set, as the * interrupt will not be executed, while we are in here! */ /* FIXME: This is really really icky we so want a sleeping version of this ! */ while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks && ((inb(IM_INTR_REG(shpnt)) & 0x8f) != 0x8f)) { udelay((1 + 999 / HZ) * 1000); barrier(); } /* if reset did not complete, just return an error */ if (!ticks) { printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY); reset_status(shpnt) = IM_RESET_FINISHED_FAIL; return FAILED; } if ((inb(IM_INTR_REG(shpnt)) & 0x8f) == 0x8f) { /* analysis done by this routine and not by the intr-routine */ if (inb(IM_INTR_REG(shpnt)) == 0xaf) reset_status(shpnt) = IM_RESET_FINISHED_OK_NO_INT; else if (inb(IM_INTR_REG(shpnt)) == 0xcf) reset_status(shpnt) = IM_RESET_FINISHED_FAIL; else /* failed, 4get it */ reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS_NO_INT; outb(IM_EOI | 0xf, IM_ATTN_REG(shpnt)); } /* if reset failed, just return an error */ if (reset_status(shpnt) == IM_RESET_FINISHED_FAIL) { printk(KERN_ERR "IBM MCA SCSI: reset failed.\n"); return FAILED; } /* so reset finished ok - call outstanding done's, and return success */ printk(KERN_INFO "IBM MCA SCSI: Reset successfully completed.\n"); for (i = 0; i < MAX_LOG_DEV; i++) { cmd_aid = ld(shpnt)[i].cmd; if (cmd_aid && cmd_aid->scsi_done) { ld(shpnt)[i].cmd = NULL; cmd_aid->result = DID_RESET << 16; } } return SUCCESS; } static int ibmmca_host_reset(Scsi_Cmnd * cmd) { struct Scsi_Host *shpnt = cmd->device->host; int rc; spin_lock_irq(shpnt->host_lock); rc = __ibmmca_host_reset(cmd); spin_unlock_irq(shpnt->host_lock); return rc; } static int ibmmca_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int *info) { int size = capacity; info[0] = 64; info[1] = 32; info[2] = size / (info[0] * info[1]); if (info[2] >= 1024) { info[0] = 128; info[1] = 63; info[2] = size / (info[0] * info[1]); if (info[2] >= 1024) { info[0] = 255; info[1] = 63; info[2] = size / (info[0] * info[1]); if (info[2] >= 1024) info[2] = 1023; } } return 0; } /* calculate percentage of total accesses on a ldn */ static int ldn_access_load(struct Scsi_Host *shpnt, int ldn) { if (IBM_DS(shpnt).total_accesses == 0) return (0); if (IBM_DS(shpnt).ldn_access[ldn] == 0) return (0); return (IBM_DS(shpnt).ldn_access[ldn] * 100) / IBM_DS(shpnt).total_accesses; } /* calculate total amount of r/w-accesses */ static int ldn_access_total_read_write(struct Scsi_Host *shpnt) { int a; int i; a = 0; for (i = 0; i <= MAX_LOG_DEV; i++) a += IBM_DS(shpnt).ldn_read_access[i] + IBM_DS(shpnt).ldn_write_access[i]; return (a); } static int ldn_access_total_inquiry(struct Scsi_Host *shpnt) { int a; int i; a = 0; for (i = 0; i <= MAX_LOG_DEV; i++) a += IBM_DS(shpnt).ldn_inquiry_access[i]; return (a); } static int ldn_access_total_modeselect(struct Scsi_Host *shpnt) { int a; int i; a = 0; for (i = 0; i <= MAX_LOG_DEV; i++) a += IBM_DS(shpnt).ldn_modeselect_access[i]; return (a); } /* routine to display info in the proc-fs-structure (a deluxe feature) */ static int ibmmca_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout) { int len = 0; int i, id, lun; unsigned long flags; int max_pun; spin_lock_irqsave(shpnt->host_lock, flags); /* Check it */ max_pun = subsystem_maxid(shpnt); len += sprintf(buffer + len, "\n IBM-SCSI-Subsystem-Linux-Driver, Version %s\n\n\n", IBMMCA_SCSI_DRIVER_VERSION); len += sprintf(buffer + len, " SCSI Access-Statistics:\n"); len += sprintf(buffer + len, " Device Scanning Order....: %s\n", (ibm_ansi_order) ? "IBM/ANSI" : "New Industry Standard"); #ifdef CONFIG_SCSI_MULTI_LUN len += sprintf(buffer + len, " Multiple LUN probing.....: Yes\n"); #else len += sprintf(buffer + len, " Multiple LUN probing.....: No\n"); #endif len += sprintf(buffer + len, " This Hostnumber..........: %d\n", shpnt->host_no); len += sprintf(buffer + len, " Base I/O-Port............: 0x%x\n", (unsigned int) (IM_CMD_REG(shpnt))); len += sprintf(buffer + len, " (Shared) IRQ.............: %d\n", IM_IRQ); len += sprintf(buffer + len, " Total Interrupts.........: %d\n", IBM_DS(shpnt).total_interrupts); len += sprintf(buffer + len, " Total SCSI Accesses......: %d\n", IBM_DS(shpnt).total_accesses); len += sprintf(buffer + len, " Total short SCBs.........: %d\n", IBM_DS(shpnt).scbs); len += sprintf(buffer + len, " Total long SCBs..........: %d\n", IBM_DS(shpnt).long_scbs); len += sprintf(buffer + len, " Total SCSI READ/WRITE..: %d\n", ldn_access_total_read_write(shpnt)); len += sprintf(buffer + len, " Total SCSI Inquiries...: %d\n", ldn_access_total_inquiry(shpnt)); len += sprintf(buffer + len, " Total SCSI Modeselects.: %d\n", ldn_access_total_modeselect(shpnt)); len += sprintf(buffer + len, " Total SCSI other cmds..: %d\n", IBM_DS(shpnt).total_accesses - ldn_access_total_read_write(shpnt) - ldn_access_total_modeselect(shpnt) - ldn_access_total_inquiry(shpnt)); len += sprintf(buffer + len, " Total SCSI command fails.: %d\n\n", IBM_DS(shpnt).total_errors); len += sprintf(buffer + len, " Logical-Device-Number (LDN) Access-Statistics:\n"); len += sprintf(buffer + len, " LDN | Accesses [%%] | READ | WRITE | ASSIGNMENTS\n"); len += sprintf(buffer + len, " -----|--------------|-----------|-----------|--------------\n"); for (i = 0; i <= MAX_LOG_DEV; i++) len += sprintf(buffer + len, " %2X | %3d | %8d | %8d | %8d\n", i, ldn_access_load(shpnt, i), IBM_DS(shpnt).ldn_read_access[i], IBM_DS(shpnt).ldn_write_access[i], IBM_DS(shpnt).ldn_assignments[i]); len += sprintf(buffer + len, " -----------------------------------------------------------\n\n"); len += sprintf(buffer + len, " Dynamical-LDN-Assignment-Statistics:\n"); len += sprintf(buffer + len, " Number of physical SCSI-devices..: %d (+ Adapter)\n", IBM_DS(shpnt).total_scsi_devices); len += sprintf(buffer + len, " Dynamical Assignment necessary...: %s\n", IBM_DS(shpnt).dyn_flag ? "Yes" : "No "); len += sprintf(buffer + len, " Next LDN to be assigned..........: 0x%x\n", next_ldn(shpnt)); len += sprintf(buffer + len, " Dynamical assignments done yet...: %d\n", IBM_DS(shpnt).dynamical_assignments); len += sprintf(buffer + len, "\n Current SCSI-Device-Mapping:\n"); len += sprintf(buffer + len, " Physical SCSI-Device Map Logical SCSI-Device Map\n"); len += sprintf(buffer + len, " ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n"); for (id = 0; id < max_pun; id++) { len += sprintf(buffer + len, " %2d ", id); for (lun = 0; lun < 8; lun++) len += sprintf(buffer + len, "%2s ", ti_p(get_scsi(shpnt)[id][lun])); len += sprintf(buffer + len, " %2d ", id); for (lun = 0; lun < 8; lun++) len += sprintf(buffer + len, "%2s ", ti_l(get_ldn(shpnt)[id][lun])); len += sprintf(buffer + len, "\n"); } len += sprintf(buffer + len, "(A = IBM-Subsystem, D = Harddisk, T = Tapedrive, P = Processor, W = WORM,\n"); len += sprintf(buffer + len, " R = CD-ROM, S = Scanner, M = MO-Drive, C = Medium-Changer, + = unprovided LUN,\n"); len += sprintf(buffer + len, " - = nothing found, nothing assigned or unprobed LUN)\n\n"); *start = buffer + offset; len -= offset; if (len > length) len = length; spin_unlock_irqrestore(shpnt->host_lock, flags); return len; } static int option_setup(char *str) { int ints[IM_MAX_HOSTS]; char *cur = str; int i = 1; while (cur && isdigit(*cur) && i <= IM_MAX_HOSTS) { ints[i++] = simple_strtoul(cur, NULL, 0); if ((cur = strchr(cur, ',')) != NULL) cur++; } ints[0] = i - 1; internal_ibmmca_scsi_setup(cur, ints); return 1; } __setup("ibmmcascsi=", option_setup); static struct mca_driver ibmmca_driver = { .id_table = ibmmca_id_table, .driver = { .name = "ibmmca", .bus = &mca_bus_type, .probe = ibmmca_probe, .remove = __devexit_p(ibmmca_remove), }, }; static int __init ibmmca_init(void) { #ifdef MODULE /* If the driver is run as module, read from conf.modules or cmd-line */ if (boot_options) option_setup(boot_options); #endif return mca_register_driver_integrated(&ibmmca_driver, MCA_INTEGSCSI); } static void __exit ibmmca_exit(void) { mca_unregister_driver(&ibmmca_driver); } module_init(ibmmca_init); module_exit(ibmmca_exit);
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