qla2xxx.revision.notes

Linux Kernel 2.6.9 for OMAP1710

/*
 * QLogic ISP2200 and ISP2300 Linux Driver Revision List File.
 *
 ********************************************************************
 *
 * Revision History
 *
 *  Rev  8.00.00b8	December 5, 2003	AV
 *	- Instruct mid-layer to perform initial scan.
 *
 *  Rev  8.00.00b7	December 5, 2003	AV
 *	- Resync with Linux Kernel 2.6.0-test11.
 *	- Add basic NVRAM parser (extras/qla_nvr).
 *
 *  Rev  8.00.00b7-pre11 December 3, 2003	AV
 *	- Sanitize the scsi_qla_host structure:
 *	  - Purge unused elements.
 *	  - Reorganize high-priority members (cache coherency).
 *	- Add support for NVRAM access via a sysfs binary attribute:
 *	  - Consolidate semaphore locking access.
 *	- Fix more PCI posting issues.
 *	- Add extras directory for dump/NVRAM tools.
 *	- Remove unused qla_vendor.c file.
 *
 *  Rev  8.00.00b7-pre11 November 26, 2003	DG/AV
 *	- Merge several patches from Christoph Hellwig [[e-mail]]:
 *	  - in Linux 2.6 both pci and the scsi layer use the generic
 *	    dma direction bits, use them directly instead of the scsi
 *	    and pci variants and the (noop) conversion routines.
 *	- Fix _IOXX_BAD() usage for external IOCTL interface.
 *	- Use atomic construct for HA loop_state member.
 *	- Add generic model description text for HBA types.
 *
 *  Rev  8.00.00b7-pre5	November 17, 2003	AV
 *	- Merge several patches from Christoph Hellwig [[e-mail]]:
 *	  - patch to split the driver into a common qla2xxx.ko and a
 *	    qla2?00.ko for each HBA type - the latter modules are
 *	    only very small wrappers, mostly for the firmware
 *	    images, all the meat is in the common qla2xxx.ko.
 *	  - make the failover code optional.
 *	  - kill useless lock_kernel in dpc thread startup.
 *	  - no need for modversions hacks in 2.6 (or 2.4).
 *	  - kill qla2x00_register_with_Linux.
 *	  - simplify EH code, cmd or it's hostdata can't be NULL, no
 *	    need to search whether the host it's ours, the midlayer
 *	    makes sure it won't call into a driver for some else
 *	    host.
 *	- Merge several patches from Jes Sorensen
 *	  [[e-mail]]:
 *	  - Call qla2x00_config_dma_addressing() before performing
 *	    any consistent allocations. This is required since the
 *	    dma mask settings will affect the memory
 *	    pci_alloc_consistent() will return.
 *	  - Call pci_set_consistent_dma_mask() to allow for 64 bit
 *	    consistent allocations, required on some platforms such
 *	    as the SN2.
 *	  - Wait 20 usecs (not sure how long is really necessary,
 *	    but this seems safe) after setting CSR_ISP_SOFT_RESET in
 *	    the ctrl_status register as the card doesn't respond to
 *	    PCI reads while in reset state. This causes a machine
 *	    check on some architectures.
 *	  - Flush PCI writes before calling udelay() to ensure the
 *	    write is not sitting idle in-flight for a while before
 *	    hitting the hardware.
 *	  - Include linux/vmalloc.h in qla_os.c since it uses
 *	    vmalloc().
 *	  - Use auto-negotiate link speed when using default
 *	    parameters rather than NVRAM settings. Disable NVRAM
 *	    reading on SN2 since it's not possible to execute the
 *	    HBA's BIOS on an SN2. I suggest doing something similar
 *	    for all architectures that do not provide x86 BIOS
 *	    emulation.
 *	- Clean-up slab-cache allocations:
 *	  - locking.
 *	  - mempool allocations in case of low-memory situations.
 *	- Fallback to GA_NXT scan if GID_PT call returns more than
 *	  MAX_FIBRE_DEVICES.
 *	- Preserve iterating port ID across GA_NXT calls in
 *	  qla2x00_find_all_fabric_devs().
 *	- Pre-calculate ASCII firmware dump length as to not incur the
 *	  cost-to-calculate at each invocation of a read().
 *
 *  Rev  8.00.00b6	November 4, 2003	AV
 *	- Add new 2300 TPX firmware (3.02.18).
 *
 *  Rev  8.00.00b6-pre25 October 20, 2003	RA/AV
 *	- Resync with Linux Kernel 2.6.0-test9.
 *	- Rework firmware dump process:
 *	  - Use binary attribute within sysfs tree.
 *	  - Add user-space tool (gdump.sh) to retrieve formatted
 *	    buffer.
 *	  - Add ISP2100 support.
 *	- Use a slab cache for SRB allocations to reduce memory
 *	  pressure.
 *	- Initial conversion of driver logging methods to a new
 *	  qla_printk() function which uses dev_printk (Daniel
 *	  Stekloff, IBM).
 *	- Further reduce stack usage in qla2x00_configure_local_loop()
 *	  and qla2x00_find_all_fabric_devs().
 *	- Separate port state used for routing of I/O's from port
 *	  mgmt-login retry etc.
 *
 *  Rev  8.00.00b6-pre19 October 13, 2003	AV
 *	- Resync with Linux Kernel 2.6.0-test7-bk5.
 *	- Add intelligent RSCN event handling:
 *	  - reduce scan time during 'port' RSCN events by only
 *	    querying specified port ids.
 *	  - Available on ISP23xx cards only.
 *	- Increase maximum number of recognizable targets from 256
 *	  to 512.
 *	  - Backend changes were previously added to support TPX
 *	    (2K logins) firmware.  Mid-layer can now scan for targets
 *	    (H, B, T, L) where 512 < T >= 0.
 *	- Remove IP support from driver.
 *	  - Switch firmware types from IP->TP for ISP22xx and
 *	    IPX->TPX for ISP23xx cards.
 *	  - Remove files qla_ip.[ch].
 *	- Remove type designations from firmware filenames.
 *
 *  Rev  8.00.00b6-pre11 September 15, 2003	DG/AV
 *	- Resync with 6.06.00.
 *	- Resync with Linux Kernel 2.6.0-test5-bk3.
 *	- Add new 2300 IPX firmware (3.02.15).
 *
 *  Rev  8.00.00b5	July 31, 2003		AV
 *	- Always create an fc_lun_t entry for lun 0 - as the mid-
 *	  layer requires access to this lun for discovery to occur.
 *	- General sanitizing:
 *	  - Add generic firmware option definitions.
 *	  - Generalize retrieval/update of firmware options.
 *	  - Fix compile errors which occur with extended debug.
 *	  - Handle failure cases for scsi_add_host() and
 *	    down_interruptible().
 *	- Host template updates:
 *	  - Use standard bios_param callback function.
 *	  - Disable clustering.
 *	  - Remove unchecked_is_dma entry.
 *
 *  Rev  8.00.00b5-pre5	July 29, 2003		DG/AV
 *	- Resync with 6.06.00b13.
 *	- Resync with Linux Kernel 2.6.0-test2.
 *	- Pass the complete loop_id, not the masked (0xff) value
 *	  while issuing mailbox commands (qla_mbx.c/qla_fo.c/
 *	  qla_iocb.c/qla_init.c).
 *	- Properly handle zero-length return status for an RLC CDB.
 *	- Create an fclun_t structure for 'disconnected' luns,
 *	  peripheral-qualifier of 001b.
 *	- Remove unused LIP-sequence register access during AE 8010.
 *	- Generalize qla2x00_mark_device_lost() to handle forced 
 *	  login request -- modify all direct/indirect invocations 
 *	  with proper flag.
 *	- Save RSCN notification (AE 8015h) data in a proper and 
 *	  consistent format (domain, area, al_pa).
 *	- General sanitizing:
 *	  - scsi_qla_host structure member reordering for cache-line
 *	    coherency.
 *	  - Remove unused SCSI opcodes, endian-swap definitions.
 *	  - Remove CMD_* pre-processor defines.
 *	  - Remove unused SCSIFCHOTSWAP/GAMAP/MULTIHOST codes.
 *	- Backout patch which added a per-scsi_qla_host scsi host
 *	  spinlock, since mid-layer already defines one.
 *	- Add new 2300 IPX firmware (3.02.15).
 *
 *  Rev  8.00.00b4	July 14, 2003		RA/DG/AV
 *	- Resync with 6.06.00b12.
 *	- Resync with Linux Kernel 2.6.0-test1.
 *	- Remove IOCB throttling code -- originally #if'd.
 *	- Remove apidev_*() routines since proc_mknod() has been
 *	  removed -- need alternate IOCTL interface.
 *	- Merge several performance/fix patches from Arjan van de
 *	  Ven:
 *	  - Undefined operation >> 32.
 *	  - No need to acquire mid-layer lock during command
 *	    callback. 
 *	  - Use a per-HBA mid-layer lock.
 *	  - Use a non-locked cycle for setting the count of the
 *	    newly allocated sp (qla2x00_get_new_sp()).
 *	  - Modify semantic behavior of qla2x00_queuecommand():
 *	    - Reduce cacheline bouncing by having I/Os submitted
 *	      by the IRQ handler.
 *	    - Remove extraneous calls to qla2x00_next() during I/O
 *	      queuing.
 *	  - Use list_splice_init() during qla2x00_done() handling
 *	    of commands to reduce list_lock contention.
 *	  - RIO mode support for ISP2200:
 *	    - Implementation differs slightly from original patch.
 *	  - Do not use bottom-half handler (tasklet/work queue)
 *	    for qla2x00_done() processing.
 *
 *  Rev  8.00.00b4-pre22 July 12, 2003		AV
 *	- Check for 'Process Response Queue' requests early during
 *	  the Host Status check.
 *	- General sanitizing:
 *	  - srb_t structure rewrite, removal of unused members.
 *	  - Remove unused fcdev array, fabricid, and PORT_*
 *	    definitions.
 *	  - Remove unused config_reg_t PCI definitions.
 *	- Add new 2200 IP firmware (2.02.06).
 *	- Add new 2300 IPX firmware (3.02.14).
 *
 *  Rev  8.00.00b4-pre19 June 30, 2003		AV
 *	- Resync with Linux Kernel 2.5.73-bk8.
 *	- Rework IOCB command queuing methods:
 *	  - Upper-layer driver *MUST* properly set the direction
 *	    bit of SCSI commands.
 *	  - Generalize 32bit/64bit queuing path functions.
 *	  - Remove costly page-boundary cross check when using
 *	    64bit address capable IOCBs.
 *
 *  Rev  8.00.00b4-pre15 June 19, 2003		AV
 *	- Resync with 6.06.00b11.
 *	- Continue fcport list consolidation work:
 *	  - Updated IOCTL implementations to use new fcports 
 *	    list.
 *	- Modified product ID check to not verify ISP chip
 *	  revision -- ISP2312 v3 (qla2x00_chip_diag()).
 *	- Add new 2300 IPX firmware (3.02.13):
 *
 *  Rev  8.00.00b4-pre13 June 19, 2003		AV
 *	- Fix build process for qla2100 driver -- no support
 *	  for IP.
 *	- SCSI host template modifications:
 *	  - Set sg_tablesize based on the derived DMA mask.
 *	  - Increase max_sectors since only limit within RISC
 *	    is transfer of (((2^32) - 1) >> 9) sectors.
 *
 *  Rev  8.00.00b4-pre12 June 18, 2003		RA, DG, RL, AV
 *	- Resync with 6.06.00b10.
 *	- Resync with Linux Kernel 2.5.72.