Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 272 insertions, 0 deletions

diff --git a/Documentation/scsi/cpqfc.txt b/Documentation/scsi/cpqfc.txt
new file mode 100644
index 00000000000..dd33e61c064
--- /dev/null
+++ b/Documentation/scsi/cpqfc.txt
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+Notes for CPQFCTS driver for Compaq Tachyon TS
+Fibre Channel Host Bus Adapter, PCI 64-bit, 66MHz
+for Linux (RH 6.1, 6.2 kernel 2.2.12-32, 2.2.14-5)
+SMP tested
+Tested in single and dual HBA configuration, 32 and 64bit busses,
+33 and 66MHz.  Only supports FC-AL.
+SEST size 512 Exchanges (simultaneous I/Os) limited by module kmalloc() 
+	max of 128k bytes contiguous.
+
+Ver 2.5.4  Oct 03, 2002
+   * fixed memcpy of sense buffer in ioctl to copy the smaller defined size
+Ver 2.5.3  Aug 01, 2002
+   * fix the passthru ioctl to handle the Scsi_Cmnd->request being a pointer
+Ver 2.5.1  Jul 30, 2002
+   * fix ioctl to pay attention to the specified LUN.
+Ver 2.5.0  Nov 29, 2001
+   * eliminated io_request_lock.  This change makes the driver specific
+     to the 2.5.x kernels.
+   * silenced excessively noisy printks.
+
+Ver 2.1.2  July 23, 2002
+   * initialize DumCmnd->lun in cpqfcTS_ioctl (used in fcFindLoggedInPorts as LUN index)
+
+Ver 2.1.1  Oct 18, 2001
+   * reinitialize Cmnd->SCp.sent_command (used to identify commands as
+     passthrus) on calling scsi_done, since the scsi mid layer does not
+     use (or reinitialize) this field to prevent subsequent comands from
+     having it set incorrectly. 
+
+Ver 2.1.0  Aug 27, 2001
+   * Revise driver to use new kernel 2.4.x PCI DMA API, instead of 
+     virt_to_bus().  (enables driver to work w/ ia64 systems with >2Gb RAM.)
+     Rework main scatter-gather code to handle cases where SG element
+     lengths are larger than 0x7FFFF bytes and use as many scatter 
+     gather pages as necessary. (Steve Cameron)
+   * Makefile changes to bring cpqfc into line w/ rest of SCSI drivers
+     (thanks to Keith Owens)
+
+Ver 2.0.5  Aug 06, 2001
+   * Reject non-existent luns in the driver rather than letting the 
+     hardware do it.  (some HW behaves differently than others in this area.)
+   * Changed Makefile to rely on "make dep" instead of explicit dependencies
+   * ifdef'ed out fibre channel analyzer triggering debug code
+   * fixed a jiffies wrapping issue
+
+Ver 2.0.4  Aug 01, 2001
+   * Incorporated fix for target device reset from Steeleye
+   * Fixed passthrough ioctl so it doesn't hang.
+   * Fixed hang in launch_FCworker_thread() that occurred on some machines.
+   * Avoid problem when number of volumes in a single cabinet > 8
+
+Ver 2.0.2  July 23, 2001
+   Changed the semiphore changes so the driver would compile in 2.4.7. 
+   This version is for 2.4.7 and beyond. 
+ 
+Ver 2.0.1  May 	7, 2001
+   Merged version 1.3.6 fixes into version 2.0.0.   
+
+Ver 2.0.0  May   7, 2001
+  Fixed problem so spinlock is being initialized to UNLOCKED. 
+  Fixed updated driver so it compiles in the 2.4 tree. 
+ 
+ Ver 1.3.6  Feb  27, 2001
+   Added Target_Device_Reset function for SCSI error handling
+   Fixed problem with not reseting addressing mode after implicit logout
+ 
+
+Ver 1.3.4  Sep   7, 2000
+  Added Modinfo information
+  Fixed problem with statically linking the driver
+
+Ver 1.3.3, Aug  23, 2000
+  Fixed device/function number in ioctl
+
+Ver 1.3.2, July 27, 2000
+  Add include for Alpha compile on 2.2.14 kernel (cpq*i2c.c)
+  Change logic for different FCP-RSP sense_buffer location for HSG80 target
+  And search for Agilent Tachyon XL2 HBAs (not finished! - in test)
+
+Tested with 
+(storage):
+           Compaq RA-4x000, RAID firmware ver 2.40 - 2.54
+           Seagate FC drives model ST39102FC, rev 0006
+           Hitachi DK31CJ-72FC rev J8A8
+           IBM DDYF-T18350R rev F60K
+           Compaq FC-SCSI bridge w/ DLT 35/70 Gb DLT (tape)
+(servers):
+           Compaq PL-1850R
+           Compaq PL-6500 Xeon (400MHz)
+	   Compaq PL-8500 (500MHz, 66MHz, 64bit PCI)
+           Compaq Alpha DS20 (RH 6.1)
+(hubs):
+           Vixel Rapport 1000 (7-port "dumb")
+	   Gadzoox Gibralter (12-port "dumb")
+	   Gadzoox Capellix 2000, 3000 
+(switches):
+           Brocade 2010, 2400, 2800, rev 2.0.3a (& later)
+           Gadzoox 3210 (Fabric blade beta)
+           Vixel 7100 (Fabric beta firmare - known hot plug issues)
+using "qa_test" (esp. io_test script) suite modified from Unix tests.
+	
+Installation:
+make menuconfig
+  (select SCSI low-level, Compaq FC HBA)
+make modules
+make modules_install
+
+e.g. insmod -f cpqfc
+
+Due to Fabric/switch delays, driver requires 4 seconds 
+to initialize.  If adapters are found, there will be a entries at
+/proc/scsi/cpqfcTS/*
+
+sample contents of startup messages
+
+*************************
+ scsi_register allocating 3596 bytes for CPQFCHBA
+ ioremap'd Membase: c887e600
+  HBA Tachyon RevId 1.2
+Allocating 119808 for 576 Exchanges @ c0dc0000
+Allocating 112904 for LinkQ @ c0c20000 (576 elements)
+Allocating 110600 for TachSEST for 512 Exchanges
+  cpqfcTS: writing IMQ BASE 7C0000h    PI 7C4000h
+  cpqfcTS: SEST c0e40000(virt): Wrote base E40000h @ c887e740
+cpqfcTS: New FC port 0000E8h WWN: 500507650642499D SCSI Chan/Trgt 0/0
+cpqfcTS: New FC port 0000EFh WWN: 50000E100000D5A6 SCSI Chan/Trgt 0/1
+cpqfcTS: New FC port 0000E4h WWN: 21000020370097BB SCSI Chan/Trgt 0/2
+cpqfcTS: New FC port 0000E2h WWN: 2100002037009946 SCSI Chan/Trgt 0/3
+cpqfcTS: New FC port 0000E1h WWN: 21000020370098FE SCSI Chan/Trgt 0/4
+cpqfcTS: New FC port 0000E0h WWN: 21000020370097B2 SCSI Chan/Trgt 0/5
+cpqfcTS: New FC port 0000DCh WWN: 2100002037006CC1 SCSI Chan/Trgt 0/6
+cpqfcTS: New FC port 0000DAh WWN: 21000020370059F6 SCSI Chan/Trgt 0/7
+cpqfcTS: New FC port 00000Fh WWN: 500805F1FADB0E20 SCSI Chan/Trgt 0/8
+cpqfcTS: New FC port 000008h WWN: 500805F1FADB0EBA SCSI Chan/Trgt 0/9
+cpqfcTS: New FC port 000004h WWN: 500805F1FADB1EB9 SCSI Chan/Trgt 0/10
+cpqfcTS: New FC port 000002h WWN: 500805F1FADB1ADE SCSI Chan/Trgt 0/11
+cpqfcTS: New FC port 000001h WWN: 500805F1FADBA2CA SCSI Chan/Trgt 0/12
+scsi4 : Compaq FibreChannel HBA Tachyon TS HPFC-5166A/1.2: WWN 500508B200193F50
+ on PCI bus 0 device 0xa0fc irq 5 IObaseL 0x3400, MEMBASE 0xc6ef8600
+PCI bus width 32 bits, bus speed 33 MHz
+FCP-SCSI Driver v1.3.0
+GBIC detected: Short-wave.  LPSM 0h Monitor
+scsi : 5 hosts.
+  Vendor: IBM       Model: DDYF-T18350R      Rev: F60K
+  Type:   Direct-Access                      ANSI SCSI revision: 03
+Detected scsi disk sdb at scsi4, channel 0, id 0, lun 0
+  Vendor: HITACHI   Model: DK31CJ-72FC       Rev: J8A8
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdc at scsi4, channel 0, id 1, lun 0
+  Vendor: SEAGATE   Model: ST39102FC         Rev: 0006
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdd at scsi4, channel 0, id 2, lun 0
+  Vendor: SEAGATE   Model: ST39102FC         Rev: 0006
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sde at scsi4, channel 0, id 3, lun 0
+  Vendor: SEAGATE   Model: ST39102FC         Rev: 0006
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdf at scsi4, channel 0, id 4, lun 0
+  Vendor: SEAGATE   Model: ST39102FC         Rev: 0006
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdg at scsi4, channel 0, id 5, lun 0
+  Vendor: SEAGATE   Model: ST39102FC         Rev: 0006
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdh at scsi4, channel 0, id 6, lun 0
+  Vendor: SEAGATE   Model: ST39102FC         Rev: 0006
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdi at scsi4, channel 0, id 7, lun 0
+  Vendor: COMPAQ    Model: LOGICAL VOLUME    Rev: 2.48
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdj at scsi4, channel 0, id 8, lun 0
+  Vendor: COMPAQ    Model: LOGICAL VOLUME    Rev: 2.48
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdk at scsi4, channel 0, id 8, lun 1
+  Vendor: COMPAQ    Model: LOGICAL VOLUME    Rev: 2.40
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdl at scsi4, channel 0, id 9, lun 0
+  Vendor: COMPAQ    Model: LOGICAL VOLUME    Rev: 2.40
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdm at scsi4, channel 0, id 9, lun 1
+  Vendor: COMPAQ    Model: LOGICAL VOLUME    Rev: 2.54
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdn at scsi4, channel 0, id 10, lun 0
+  Vendor: COMPAQ    Model: LOGICAL VOLUME    Rev: 2.54
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdo at scsi4, channel 0, id 11, lun 0
+  Vendor: COMPAQ    Model: LOGICAL VOLUME    Rev: 2.54
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdp at scsi4, channel 0, id 11, lun 1
+  Vendor: COMPAQ    Model: LOGICAL VOLUME    Rev: 2.54
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdq at scsi4, channel 0, id 12, lun 0
+  Vendor: COMPAQ    Model: LOGICAL VOLUME    Rev: 2.54
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sdr at scsi4, channel 0, id 12, lun 1
+resize_dma_pool: unknown device type 12
+resize_dma_pool: unknown device type 12
+SCSI device sdb: hdwr sector= 512 bytes. Sectors= 35843670 [17501 MB] [17.5 GB]
+ sdb: sdb1
+SCSI device sdc: hdwr sector= 512 bytes. Sectors= 144410880 [70513 MB] [70.5 GB]
+ sdc: sdc1
+SCSI device sdd: hdwr sector= 512 bytes. Sectors= 17783240 [8683 MB] [8.7 GB]
+ sdd: sdd1
+SCSI device sde: hdwr sector= 512 bytes. Sectors= 17783240 [8683 MB] [8.7 GB]
+ sde: sde1
+SCSI device sdf: hdwr sector= 512 bytes. Sectors= 17783240 [8683 MB] [8.7 GB]
+ sdf: sdf1
+SCSI device sdg: hdwr sector= 512 bytes. Sectors= 17783240 [8683 MB] [8.7 GB]
+ sdg: sdg1
+SCSI device sdh: hdwr sector= 512 bytes. Sectors= 17783240 [8683 MB] [8.7 GB]
+ sdh: sdh1
+SCSI device sdi: hdwr sector= 512 bytes. Sectors= 17783240 [8683 MB] [8.7 GB]
+ sdi: sdi1
+SCSI device sdj: hdwr sector= 512 bytes. Sectors= 2056160 [1003 MB] [1.0 GB]
+ sdj: sdj1
+SCSI device sdk: hdwr sector= 512 bytes. Sectors= 2052736 [1002 MB] [1.0 GB]
+ sdk: sdk1
+SCSI device sdl: hdwr sector= 512 bytes. Sectors= 17764320 [8673 MB] [8.7 GB]
+ sdl: sdl1
+SCSI device sdm: hdwr sector= 512 bytes. Sectors= 8380320 [4091 MB] [4.1 GB]
+ sdm: sdm1
+SCSI device sdn: hdwr sector= 512 bytes. Sectors= 17764320 [8673 MB] [8.7 GB]
+ sdn: sdn1
+SCSI device sdo: hdwr sector= 512 bytes. Sectors= 17764320 [8673 MB] [8.7 GB]
+ sdo: sdo1
+SCSI device sdp: hdwr sector= 512 bytes. Sectors= 17764320 [8673 MB] [8.7 GB]
+ sdp: sdp1
+SCSI device sdq: hdwr sector= 512 bytes. Sectors= 2056160 [1003 MB] [1.0 GB]
+ sdq: sdq1
+SCSI device sdr: hdwr sector= 512 bytes. Sectors= 2052736 [1002 MB] [1.0 GB]
+ sdr: sdr1
+
+*************************
+
+If a GBIC of type Short-wave, Long-wave, or Copper is detected, it will
+print out; otherwise, "none" is displayed.  If the cabling is correct
+and a loop circuit is completed, you should see "Monitor"; otherwise, 
+"LoopFail" (on open circuit) or some LPSM number/state with bit 3 set.
+
+
+ERRATA:
+1. Normally, Linux Scsi queries FC devices with INQUIRY strings.  All LUNs
+found according to INQUIRY should get READ commands at sector 0 to find
+partition table, etc.  Older kernels only query the first 4 devices.  Some
+Linux kernels only look for one LUN per target (i.e. FC device).
+
+2. Physically removing a device, or a malfunctioning system which hides a
+device, leads to a 30-second timeout and subsequent _abort call.  
+In some process contexts, this will hang the kernel (crashing the system).
+Single bit errors in frames and virtually all hot plugging events are 
+gracefully handled with internal driver timer and Abort processing.
+
+3. Some SCSI drives with error conditions will not handle the 7 second timeout
+in this software driver, leading to infinite retries on timed out SCSI commands.
+The 7 secs balances the need to quickly recover from lost frames (esp. on sequence
+initiatives) and time needed by older/slower/error-state drives in responding.
+This can be easily changed in "Exchanges[].timeOut".
+
+4. Due to the nature of FC soft addressing, there is no assurance that the 
+same LUNs (drives) will have the same path (e.g. /dev/sdb1) from one boot to
+next.  Dynamic soft address changes (i.e. 24-bit FC port_id) are
+supported during run time (e.g. due to hot plug event) by the use of WWN to
+SCSI Nexus (channel/target/LUN) mapping.
+
+5. Compaq RA4x00 firmware version 2.54 and later supports SSP (Selective 
+Storage Presentation), which maps LUNs to a WWN.  If RA4x00 firmware prior
+2.54 (e.g. older controller) is used, or the FC HBA is replaced (another WWN
+is used), logical volumes on the RA4x00 will no longer be visible.
+
+
+Send questions/comments to:
+Amy Vanzant-Hodge (fibrechannel@compaq.com)
+