forked from luck/tmp_suning_uos_patched
db5ed4dfd5
Drop the now unused reason argument from the ->change_queue_depth method. Also add a return value to scsi_adjust_queue_depth, and rename it to scsi_change_queue_depth now that it can be used as the default ->change_queue_depth implementation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de>
2579 lines
76 KiB
C
2579 lines
76 KiB
C
/*
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* eata.c - Low-level driver for EATA/DMA SCSI host adapters.
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*
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* 03 Jun 2003 Rev. 8.10 for linux-2.5.70
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* + Update for new IRQ API.
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* + Use "goto" when appropriate.
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* + Drop eata.h.
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* + Update for new module_param API.
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* + Module parameters can now be specified only in the
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* same format as the kernel boot options.
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*
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* boot option old module param
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* ----------- ------------------
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* addr,... io_port=addr,...
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* lc:[y|n] linked_comm=[1|0]
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* mq:xx max_queue_depth=xx
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* tm:[0|1|2] tag_mode=[0|1|2]
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* et:[y|n] ext_tran=[1|0]
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* rs:[y|n] rev_scan=[1|0]
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* ip:[y|n] isa_probe=[1|0]
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* ep:[y|n] eisa_probe=[1|0]
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* pp:[y|n] pci_probe=[1|0]
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*
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* A valid example using the new parameter format is:
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* modprobe eata "eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n"
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*
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* which is equivalent to the old format:
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* modprobe eata io_port=0x7410,0x230 linked_comm=1 tag_mode=0 \
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* max_queue_depth=4 eisa_probe=0
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*
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* 12 Feb 2003 Rev. 8.04 for linux 2.5.60
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* + Release irq before calling scsi_register.
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*
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* 12 Nov 2002 Rev. 8.02 for linux 2.5.47
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* + Release driver_lock before calling scsi_register.
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*
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* 11 Nov 2002 Rev. 8.01 for linux 2.5.47
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* + Fixed bios_param and scsicam_bios_param calling parameters.
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*
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* 28 Oct 2002 Rev. 8.00 for linux 2.5.44-ac4
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* + Use new tcq and adjust_queue_depth api.
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* + New command line option (tm:[0-2]) to choose the type of tags:
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* 0 -> disable tagging ; 1 -> simple tags ; 2 -> ordered tags.
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* Default is tm:0 (tagged commands disabled).
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* For compatibility the "tc:" option is an alias of the "tm:"
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* option; tc:n is equivalent to tm:0 and tc:y is equivalent to
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* tm:1.
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* + The tagged_comm module parameter has been removed, use tag_mode
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* instead, equivalent to the "tm:" boot option.
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*
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* 10 Oct 2002 Rev. 7.70 for linux 2.5.42
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* + Foreport from revision 6.70.
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*
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* 25 Jun 2002 Rev. 6.70 for linux 2.4.19
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* + This release is the first one tested on a Big Endian platform:
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* fixed endian-ness problem due to bitfields;
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* fixed endian-ness problem in read_pio.
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* + Added new options for selectively probing ISA, EISA and PCI bus:
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*
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* Boot option Parameter name Default according to
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*
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* ip:[y|n] isa_probe=[1|0] CONFIG_ISA defined
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* ep:[y|n] eisa_probe=[1|0] CONFIG_EISA defined
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* pp:[y|n] pci_probe=[1|0] CONFIG_PCI defined
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*
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* The default action is to perform probing if the corresponding
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* bus is configured and to skip probing otherwise.
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*
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* + If pci_probe is in effect and a list of I/O ports is specified
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* as parameter or boot option, pci_enable_device() is performed
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* on all pci devices matching PCI_CLASS_STORAGE_SCSI.
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*
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* 21 Feb 2002 Rev. 6.52 for linux 2.4.18
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* + Backport from rev. 7.22 (use io_request_lock).
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*
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* 20 Feb 2002 Rev. 7.22 for linux 2.5.5
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* + Remove any reference to virt_to_bus().
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* + Fix pio hang while detecting multiple HBAs.
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* + Fixed a board detection bug: in a system with
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* multiple ISA/EISA boards, all but the first one
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* were erroneously detected as PCI.
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*
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* 01 Jan 2002 Rev. 7.20 for linux 2.5.1
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* + Use the dynamic DMA mapping API.
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*
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* 19 Dec 2001 Rev. 7.02 for linux 2.5.1
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* + Use SCpnt->sc_data_direction if set.
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* + Use sglist.page instead of sglist.address.
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*
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* 11 Dec 2001 Rev. 7.00 for linux 2.5.1
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* + Use host->host_lock instead of io_request_lock.
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*
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* 1 May 2001 Rev. 6.05 for linux 2.4.4
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* + Clean up all pci related routines.
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* + Fix data transfer direction for opcode SEND_CUE_SHEET (0x5d)
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*
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* 30 Jan 2001 Rev. 6.04 for linux 2.4.1
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* + Call pci_resource_start after pci_enable_device.
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*
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* 25 Jan 2001 Rev. 6.03 for linux 2.4.0
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* + "check_region" call replaced by "request_region".
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*
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* 22 Nov 2000 Rev. 6.02 for linux 2.4.0-test11
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* + Return code checked when calling pci_enable_device.
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* + Removed old scsi error handling support.
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* + The obsolete boot option flag eh:n is silently ignored.
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* + Removed error messages while a disk drive is powered up at
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* boot time.
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* + Improved boot messages: all tagged capable device are
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* indicated as "tagged" or "soft-tagged" :
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* - "soft-tagged" means that the driver is trying to do its
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* own tagging (i.e. the tc:y option is in effect);
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* - "tagged" means that the device supports tagged commands,
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* but the driver lets the HBA be responsible for tagging
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* support.
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*
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* 16 Sep 1999 Rev. 5.11 for linux 2.2.12 and 2.3.18
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* + Updated to the new __setup interface for boot command line options.
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* + When loaded as a module, accepts the new parameter boot_options
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* which value is a string with the same format of the kernel boot
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* command line options. A valid example is:
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* modprobe eata 'boot_options="0x7410,0x230,lc:y,tc:n,mq:4"'
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*
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* 9 Sep 1999 Rev. 5.10 for linux 2.2.12 and 2.3.17
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* + 64bit cleanup for Linux/Alpha platform support
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* (contribution from H.J. Lu).
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*
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* 22 Jul 1999 Rev. 5.00 for linux 2.2.10 and 2.3.11
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* + Removed pre-2.2 source code compatibility.
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* + Added call to pci_set_master.
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*
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* 26 Jul 1998 Rev. 4.33 for linux 2.0.35 and 2.1.111
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* + Added command line option (rs:[y|n]) to reverse the scan order
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* of PCI boards. The default is rs:y, which reverses the BIOS order
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* while registering PCI boards. The default value rs:y generates
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* the same order of all previous revisions of this driver.
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* Pls. note that "BIOS order" might have been reversed itself
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* after the 2.1.9x PCI modifications in the linux kernel.
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* The rs value is ignored when the explicit list of addresses
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* is used by the "eata=port0,port1,..." command line option.
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* + Added command line option (et:[y|n]) to force use of extended
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* translation (255 heads, 63 sectors) as disk geometry.
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* The default is et:n, which uses the disk geometry returned
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* by scsicam_bios_param. The default value et:n is compatible with
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* all previous revisions of this driver.
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*
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* 28 May 1998 Rev. 4.32 for linux 2.0.33 and 2.1.104
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* Increased busy timeout from 10 msec. to 200 msec. while
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* processing interrupts.
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*
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* 16 May 1998 Rev. 4.31 for linux 2.0.33 and 2.1.102
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* Improved abort handling during the eh recovery process.
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*
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* 13 May 1998 Rev. 4.30 for linux 2.0.33 and 2.1.101
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* The driver is now fully SMP safe, including the
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* abort and reset routines.
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* Added command line options (eh:[y|n]) to choose between
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* new_eh_code and the old scsi code.
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* If linux version >= 2.1.101 the default is eh:y, while the eh
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* option is ignored for previous releases and the old scsi code
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* is used.
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*
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* 18 Apr 1998 Rev. 4.20 for linux 2.0.33 and 2.1.97
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* Reworked interrupt handler.
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*
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* 11 Apr 1998 rev. 4.05 for linux 2.0.33 and 2.1.95
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* Major reliability improvement: when a batch with overlapping
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* requests is detected, requests are queued one at a time
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* eliminating any possible board or drive reordering.
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*
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* 10 Apr 1998 rev. 4.04 for linux 2.0.33 and 2.1.95
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* Improved SMP support (if linux version >= 2.1.95).
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*
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* 9 Apr 1998 rev. 4.03 for linux 2.0.33 and 2.1.94
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* Added support for new PCI code and IO-APIC remapping of irqs.
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* Performance improvement: when sequential i/o is detected,
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* always use direct sort instead of reverse sort.
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*
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* 4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92
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* io_port is now unsigned long.
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*
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* 17 Mar 1998 rev. 4.01 for linux 2.0.33 and 2.1.88
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* Use new scsi error handling code (if linux version >= 2.1.88).
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* Use new interrupt code.
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*
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* 12 Sep 1997 rev. 3.11 for linux 2.0.30 and 2.1.55
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* Use of udelay inside the wait loops to avoid timeout
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* problems with fast cpus.
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* Removed check about useless calls to the interrupt service
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* routine (reported on SMP systems only).
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* At initialization time "sorted/unsorted" is displayed instead
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* of "linked/unlinked" to reinforce the fact that "linking" is
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* nothing but "elevator sorting" in the actual implementation.
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*
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* 17 May 1997 rev. 3.10 for linux 2.0.30 and 2.1.38
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* Use of serial_number_at_timeout in abort and reset processing.
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* Use of the __initfunc and __initdata macro in setup code.
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* Minor cleanups in the list_statistics code.
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* Increased controller busy timeout in order to better support
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* slow SCSI devices.
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*
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* 24 Feb 1997 rev. 3.00 for linux 2.0.29 and 2.1.26
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* When loading as a module, parameter passing is now supported
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* both in 2.0 and in 2.1 style.
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* Fixed data transfer direction for some SCSI opcodes.
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* Immediate acknowledge to request sense commands.
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* Linked commands to each disk device are now reordered by elevator
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* sorting. Rare cases in which reordering of write requests could
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* cause wrong results are managed.
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* Fixed spurious timeouts caused by long simple queue tag sequences.
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* New command line option (tm:[0-3]) to choose the type of tags:
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* 0 -> mixed (default); 1 -> simple; 2 -> head; 3 -> ordered.
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*
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* 18 Jan 1997 rev. 2.60 for linux 2.1.21 and 2.0.28
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* Added command line options to enable/disable linked commands
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* (lc:[y|n]), tagged commands (tc:[y|n]) and to set the max queue
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* depth (mq:xx). Default is "eata=lc:n,tc:n,mq:16".
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* Improved command linking.
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* Documented how to setup RAID-0 with DPT SmartRAID boards.
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*
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* 8 Jan 1997 rev. 2.50 for linux 2.1.20 and 2.0.27
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* Added linked command support.
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* Improved detection of PCI boards using ISA base addresses.
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*
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* 3 Dec 1996 rev. 2.40 for linux 2.1.14 and 2.0.27
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* Added support for tagged commands and queue depth adjustment.
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*
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* 22 Nov 1996 rev. 2.30 for linux 2.1.12 and 2.0.26
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* When CONFIG_PCI is defined, BIOS32 is used to include in the
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* list of i/o ports to be probed all the PCI SCSI controllers.
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* The list of i/o ports to be probed can be overwritten by the
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* "eata=port0,port1,...." boot command line option.
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* Scatter/gather lists are now allocated by a number of kmalloc
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* calls, in order to avoid the previous size limit of 64Kb.
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*
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* 16 Nov 1996 rev. 2.20 for linux 2.1.10 and 2.0.25
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* Added support for EATA 2.0C, PCI, multichannel and wide SCSI.
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*
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* 27 Sep 1996 rev. 2.12 for linux 2.1.0
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* Portability cleanups (virtual/bus addressing, little/big endian
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* support).
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*
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* 09 Jul 1996 rev. 2.11 for linux 2.0.4
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* Number of internal retries is now limited.
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*
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* 16 Apr 1996 rev. 2.10 for linux 1.3.90
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* New argument "reset_flags" to the reset routine.
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*
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* 6 Jul 1995 rev. 2.01 for linux 1.3.7
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* Update required by the new /proc/scsi support.
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*
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* 11 Mar 1995 rev. 2.00 for linux 1.2.0
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* Fixed a bug which prevented media change detection for removable
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* disk drives.
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*
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* 23 Feb 1995 rev. 1.18 for linux 1.1.94
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* Added a check for scsi_register returning NULL.
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*
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* 11 Feb 1995 rev. 1.17 for linux 1.1.91
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* Now DEBUG_RESET is disabled by default.
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* Register a board even if it does not assert DMA protocol support
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* (DPT SK2011B does not report correctly the dmasup bit).
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*
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* 9 Feb 1995 rev. 1.16 for linux 1.1.90
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* Use host->wish_block instead of host->block.
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* New list of Data Out SCSI commands.
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*
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* 8 Feb 1995 rev. 1.15 for linux 1.1.89
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* Cleared target_time_out counter while performing a reset.
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* All external symbols renamed to avoid possible name conflicts.
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*
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* 28 Jan 1995 rev. 1.14 for linux 1.1.86
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* Added module support.
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* Log and do a retry when a disk drive returns a target status
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* different from zero on a recovered error.
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*
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* 24 Jan 1995 rev. 1.13 for linux 1.1.85
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* Use optimized board configuration, with a measured performance
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* increase in the range 10%-20% on i/o throughput.
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*
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* 16 Jan 1995 rev. 1.12 for linux 1.1.81
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* Fix mscp structure comments (no functional change).
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* Display a message if check_region detects a port address
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* already in use.
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*
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* 17 Dec 1994 rev. 1.11 for linux 1.1.74
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* Use the scsicam_bios_param routine. This allows an easy
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* migration path from disk partition tables created using
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* different SCSI drivers and non optimal disk geometry.
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*
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* 15 Dec 1994 rev. 1.10 for linux 1.1.74
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* Added support for ISA EATA boards (DPT PM2011, DPT PM2021).
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* The host->block flag is set for all the detected ISA boards.
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* The detect routine no longer enforces LEVEL triggering
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* for EISA boards, it just prints a warning message.
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*
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* 30 Nov 1994 rev. 1.09 for linux 1.1.68
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* Redo i/o on target status CHECK_CONDITION for TYPE_DISK only.
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* Added optional support for using a single board at a time.
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*
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* 18 Nov 1994 rev. 1.08 for linux 1.1.64
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* Forces sg_tablesize = 64 and can_queue = 64 if these
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* values are not correctly detected (DPT PM2012).
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*
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* 14 Nov 1994 rev. 1.07 for linux 1.1.63 Final BETA release.
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* 04 Aug 1994 rev. 1.00 for linux 1.1.39 First BETA release.
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*
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*
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* This driver is based on the CAM (Common Access Method Committee)
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* EATA (Enhanced AT Bus Attachment) rev. 2.0A, using DMA protocol.
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*
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* Copyright (C) 1994-2003 Dario Ballabio (ballabio_dario@emc.com)
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*
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* Alternate email: dario.ballabio@inwind.it, dario.ballabio@tiscalinet.it
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that redistributions of source
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* code retain the above copyright notice and this comment without
|
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* modification.
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*
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*/
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/*
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*
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* Here is a brief description of the DPT SCSI host adapters.
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* All these boards provide an EATA/DMA compatible programming interface
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* and are fully supported by this driver in any configuration, including
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* multiple SCSI channels:
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*
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* PM2011B/9X - Entry Level ISA
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* PM2021A/9X - High Performance ISA
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* PM2012A Old EISA
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* PM2012B Old EISA
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* PM2022A/9X - Entry Level EISA
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* PM2122A/9X - High Performance EISA
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* PM2322A/9X - Extra High Performance EISA
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* PM3021 - SmartRAID Adapter for ISA
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* PM3222 - SmartRAID Adapter for EISA (PM3222W is 16-bit wide SCSI)
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* PM3224 - SmartRAID Adapter for PCI (PM3224W is 16-bit wide SCSI)
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* PM33340UW - SmartRAID Adapter for PCI ultra wide multichannel
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*
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* The above list is just an indication: as a matter of fact all DPT
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* boards using the EATA/DMA protocol are supported by this driver,
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* since they use exactely the same programming interface.
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*
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* The DPT PM2001 provides only the EATA/PIO interface and hence is not
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* supported by this driver.
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*
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* This code has been tested with up to 3 Distributed Processing Technology
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* PM2122A/9X (DPT SCSI BIOS v002.D1, firmware v05E.0) EISA controllers,
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* in any combination of private and shared IRQ.
|
|
* PCI support has been tested using up to 2 DPT PM3224W (DPT SCSI BIOS
|
|
* v003.D0, firmware v07G.0).
|
|
*
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|
* DPT SmartRAID boards support "Hardware Array" - a group of disk drives
|
|
* which are all members of the same RAID-0, RAID-1 or RAID-5 array implemented
|
|
* in host adapter hardware. Hardware Arrays are fully compatible with this
|
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* driver, since they look to it as a single disk drive.
|
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*
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* WARNING: to create a RAID-0 "Hardware Array" you must select "Other Unix"
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* as the current OS in the DPTMGR "Initial System Installation" menu.
|
|
* Otherwise RAID-0 is generated as an "Array Group" (i.e. software RAID-0),
|
|
* which is not supported by the actual SCSI subsystem.
|
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* To get the "Array Group" functionality, the Linux MD driver must be used
|
|
* instead of the DPT "Array Group" feature.
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*
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* Multiple ISA, EISA and PCI boards can be configured in the same system.
|
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* It is suggested to put all the EISA boards on the same IRQ level, all
|
|
* the PCI boards on another IRQ level, while ISA boards cannot share
|
|
* interrupts.
|
|
*
|
|
* If you configure multiple boards on the same IRQ, the interrupt must
|
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* be _level_ triggered (not _edge_ triggered).
|
|
*
|
|
* This driver detects EATA boards by probes at fixed port addresses,
|
|
* so no BIOS32 or PCI BIOS support is required.
|
|
* The suggested way to detect a generic EATA PCI board is to force on it
|
|
* any unused EISA address, even if there are other controllers on the EISA
|
|
* bus, or even if you system has no EISA bus at all.
|
|
* Do not force any ISA address on EATA PCI boards.
|
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*
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|
* If PCI bios support is configured into the kernel, BIOS32 is used to
|
|
* include in the list of i/o ports to be probed all the PCI SCSI controllers.
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*
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|
* Due to a DPT BIOS "feature", it might not be possible to force an EISA
|
|
* address on more than a single DPT PCI board, so in this case you have to
|
|
* let the PCI BIOS assign the addresses.
|
|
*
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|
* The sequence of detection probes is:
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|
*
|
|
* - ISA 0x1F0;
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|
* - PCI SCSI controllers (only if BIOS32 is available);
|
|
* - EISA/PCI 0x1C88 through 0xFC88 (corresponding to EISA slots 1 to 15);
|
|
* - ISA 0x170, 0x230, 0x330.
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|
*
|
|
* The above list of detection probes can be totally replaced by the
|
|
* boot command line option: "eata=port0,port1,port2,...", where the
|
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* port0, port1... arguments are ISA/EISA/PCI addresses to be probed.
|
|
* For example using "eata=0x7410,0x7450,0x230", the driver probes
|
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* only the two PCI addresses 0x7410 and 0x7450 and the ISA address 0x230,
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* in this order; "eata=0" totally disables this driver.
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*
|
|
* After the optional list of detection probes, other possible command line
|
|
* options are:
|
|
*
|
|
* et:y force use of extended translation (255 heads, 63 sectors);
|
|
* et:n use disk geometry detected by scsicam_bios_param;
|
|
* rs:y reverse scan order while detecting PCI boards;
|
|
* rs:n use BIOS order while detecting PCI boards;
|
|
* lc:y enables linked commands;
|
|
* lc:n disables linked commands;
|
|
* tm:0 disables tagged commands (same as tc:n);
|
|
* tm:1 use simple queue tags (same as tc:y);
|
|
* tm:2 use ordered queue tags (same as tc:2);
|
|
* mq:xx set the max queue depth to the value xx (2 <= xx <= 32).
|
|
*
|
|
* The default value is: "eata=lc:n,mq:16,tm:0,et:n,rs:n".
|
|
* An example using the list of detection probes could be:
|
|
* "eata=0x7410,0x230,lc:y,tm:2,mq:4,et:n".
|
|
*
|
|
* When loading as a module, parameters can be specified as well.
|
|
* The above example would be (use 1 in place of y and 0 in place of n):
|
|
*
|
|
* modprobe eata io_port=0x7410,0x230 linked_comm=1 \
|
|
* max_queue_depth=4 ext_tran=0 tag_mode=2 \
|
|
* rev_scan=1
|
|
*
|
|
* ----------------------------------------------------------------------------
|
|
* In this implementation, linked commands are designed to work with any DISK
|
|
* or CD-ROM, since this linking has only the intent of clustering (time-wise)
|
|
* and reordering by elevator sorting commands directed to each device,
|
|
* without any relation with the actual SCSI protocol between the controller
|
|
* and the device.
|
|
* If Q is the queue depth reported at boot time for each device (also named
|
|
* cmds/lun) and Q > 2, whenever there is already an active command to the
|
|
* device all other commands to the same device (up to Q-1) are kept waiting
|
|
* in the elevator sorting queue. When the active command completes, the
|
|
* commands in this queue are sorted by sector address. The sort is chosen
|
|
* between increasing or decreasing by minimizing the seek distance between
|
|
* the sector of the commands just completed and the sector of the first
|
|
* command in the list to be sorted.
|
|
* Trivial math assures that the unsorted average seek distance when doing
|
|
* random seeks over S sectors is S/3.
|
|
* When (Q-1) requests are uniformly distributed over S sectors, the average
|
|
* distance between two adjacent requests is S/((Q-1) + 1), so the sorted
|
|
* average seek distance for (Q-1) random requests over S sectors is S/Q.
|
|
* The elevator sorting hence divides the seek distance by a factor Q/3.
|
|
* The above pure geometric remarks are valid in all cases and the
|
|
* driver effectively reduces the seek distance by the predicted factor
|
|
* when there are Q concurrent read i/o operations on the device, but this
|
|
* does not necessarily results in a noticeable performance improvement:
|
|
* your mileage may vary....
|
|
*
|
|
* Note: command reordering inside a batch of queued commands could cause
|
|
* wrong results only if there is at least one write request and the
|
|
* intersection (sector-wise) of all requests is not empty.
|
|
* When the driver detects a batch including overlapping requests
|
|
* (a really rare event) strict serial (pid) order is enforced.
|
|
* ----------------------------------------------------------------------------
|
|
* The extended translation option (et:y) is useful when using large physical
|
|
* disks/arrays. It could also be useful when switching between Adaptec boards
|
|
* and DPT boards without reformatting the disk.
|
|
* When a boot disk is partitioned with extended translation, in order to
|
|
* be able to boot it with a DPT board is could be necessary to add to
|
|
* lilo.conf additional commands as in the following example:
|
|
*
|
|
* fix-table
|
|
* disk=/dev/sda bios=0x80 sectors=63 heads=128 cylindres=546
|
|
*
|
|
* where the above geometry should be replaced with the one reported at
|
|
* power up by the DPT controller.
|
|
* ----------------------------------------------------------------------------
|
|
*
|
|
* The boards are named EATA0, EATA1,... according to the detection order.
|
|
*
|
|
* In order to support multiple ISA boards in a reliable way,
|
|
* the driver sets host->wish_block = 1 for all ISA boards.
|
|
*/
|
|
|
|
#include <linux/string.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/init.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/slab.h>
|
|
#include <asm/byteorder.h>
|
|
#include <asm/dma.h>
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
|
|
#include <scsi/scsi.h>
|
|
#include <scsi/scsi_cmnd.h>
|
|
#include <scsi/scsi_device.h>
|
|
#include <scsi/scsi_host.h>
|
|
#include <scsi/scsi_tcq.h>
|
|
#include <scsi/scsicam.h>
|
|
|
|
static int eata2x_detect(struct scsi_host_template *);
|
|
static int eata2x_release(struct Scsi_Host *);
|
|
static int eata2x_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
|
|
static int eata2x_eh_abort(struct scsi_cmnd *);
|
|
static int eata2x_eh_host_reset(struct scsi_cmnd *);
|
|
static int eata2x_bios_param(struct scsi_device *, struct block_device *,
|
|
sector_t, int *);
|
|
static int eata2x_slave_configure(struct scsi_device *);
|
|
|
|
static struct scsi_host_template driver_template = {
|
|
.name = "EATA/DMA 2.0x rev. 8.10.00 ",
|
|
.detect = eata2x_detect,
|
|
.release = eata2x_release,
|
|
.queuecommand = eata2x_queuecommand,
|
|
.eh_abort_handler = eata2x_eh_abort,
|
|
.eh_host_reset_handler = eata2x_eh_host_reset,
|
|
.bios_param = eata2x_bios_param,
|
|
.slave_configure = eata2x_slave_configure,
|
|
.this_id = 7,
|
|
.unchecked_isa_dma = 1,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
};
|
|
|
|
#if !defined(__BIG_ENDIAN_BITFIELD) && !defined(__LITTLE_ENDIAN_BITFIELD)
|
|
#error "Adjust your <asm/byteorder.h> defines"
|
|
#endif
|
|
|
|
/* Subversion values */
|
|
#define ISA 0
|
|
#define ESA 1
|
|
|
|
#undef FORCE_CONFIG
|
|
|
|
#undef DEBUG_LINKED_COMMANDS
|
|
#undef DEBUG_DETECT
|
|
#undef DEBUG_PCI_DETECT
|
|
#undef DEBUG_INTERRUPT
|
|
#undef DEBUG_RESET
|
|
#undef DEBUG_GENERATE_ERRORS
|
|
#undef DEBUG_GENERATE_ABORTS
|
|
#undef DEBUG_GEOMETRY
|
|
|
|
#define MAX_ISA 4
|
|
#define MAX_VESA 0
|
|
#define MAX_EISA 15
|
|
#define MAX_PCI 16
|
|
#define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI)
|
|
#define MAX_CHANNEL 4
|
|
#define MAX_LUN 32
|
|
#define MAX_TARGET 32
|
|
#define MAX_MAILBOXES 64
|
|
#define MAX_SGLIST 64
|
|
#define MAX_LARGE_SGLIST 122
|
|
#define MAX_INTERNAL_RETRIES 64
|
|
#define MAX_CMD_PER_LUN 2
|
|
#define MAX_TAGGED_CMD_PER_LUN (MAX_MAILBOXES - MAX_CMD_PER_LUN)
|
|
|
|
#define SKIP ULONG_MAX
|
|
#define FREE 0
|
|
#define IN_USE 1
|
|
#define LOCKED 2
|
|
#define IN_RESET 3
|
|
#define IGNORE 4
|
|
#define READY 5
|
|
#define ABORTING 6
|
|
#define NO_DMA 0xff
|
|
#define MAXLOOP 10000
|
|
#define TAG_DISABLED 0
|
|
#define TAG_SIMPLE 1
|
|
#define TAG_ORDERED 2
|
|
|
|
#define REG_CMD 7
|
|
#define REG_STATUS 7
|
|
#define REG_AUX_STATUS 8
|
|
#define REG_DATA 0
|
|
#define REG_DATA2 1
|
|
#define REG_SEE 6
|
|
#define REG_LOW 2
|
|
#define REG_LM 3
|
|
#define REG_MID 4
|
|
#define REG_MSB 5
|
|
#define REGION_SIZE 9UL
|
|
#define MAX_ISA_ADDR 0x03ff
|
|
#define MIN_EISA_ADDR 0x1c88
|
|
#define MAX_EISA_ADDR 0xfc88
|
|
#define BSY_ASSERTED 0x80
|
|
#define DRQ_ASSERTED 0x08
|
|
#define ABSY_ASSERTED 0x01
|
|
#define IRQ_ASSERTED 0x02
|
|
#define READ_CONFIG_PIO 0xf0
|
|
#define SET_CONFIG_PIO 0xf1
|
|
#define SEND_CP_PIO 0xf2
|
|
#define RECEIVE_SP_PIO 0xf3
|
|
#define TRUNCATE_XFR_PIO 0xf4
|
|
#define RESET_PIO 0xf9
|
|
#define READ_CONFIG_DMA 0xfd
|
|
#define SET_CONFIG_DMA 0xfe
|
|
#define SEND_CP_DMA 0xff
|
|
#define ASOK 0x00
|
|
#define ASST 0x01
|
|
|
|
#define YESNO(a) ((a) ? 'y' : 'n')
|
|
#define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM)
|
|
|
|
/* "EATA", in Big Endian format */
|
|
#define EATA_SIG_BE 0x45415441
|
|
|
|
/* Number of valid bytes in the board config structure for EATA 2.0x */
|
|
#define EATA_2_0A_SIZE 28
|
|
#define EATA_2_0B_SIZE 30
|
|
#define EATA_2_0C_SIZE 34
|
|
|
|
/* Board info structure */
|
|
struct eata_info {
|
|
u_int32_t data_len; /* Number of valid bytes after this field */
|
|
u_int32_t sign; /* ASCII "EATA" signature */
|
|
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
|
unchar version : 4,
|
|
: 4;
|
|
unchar haaval : 1,
|
|
ata : 1,
|
|
drqvld : 1,
|
|
dmasup : 1,
|
|
morsup : 1,
|
|
trnxfr : 1,
|
|
tarsup : 1,
|
|
ocsena : 1;
|
|
#else
|
|
unchar : 4, /* unused low nibble */
|
|
version : 4; /* EATA version, should be 0x1 */
|
|
unchar ocsena : 1, /* Overlap Command Support Enabled */
|
|
tarsup : 1, /* Target Mode Supported */
|
|
trnxfr : 1, /* Truncate Transfer Cmd NOT Necessary */
|
|
morsup : 1, /* More Supported */
|
|
dmasup : 1, /* DMA Supported */
|
|
drqvld : 1, /* DRQ Index (DRQX) is valid */
|
|
ata : 1, /* This is an ATA device */
|
|
haaval : 1; /* Host Adapter Address Valid */
|
|
#endif
|
|
|
|
ushort cp_pad_len; /* Number of pad bytes after cp_len */
|
|
unchar host_addr[4]; /* Host Adapter SCSI ID for channels 3, 2, 1, 0 */
|
|
u_int32_t cp_len; /* Number of valid bytes in cp */
|
|
u_int32_t sp_len; /* Number of valid bytes in sp */
|
|
ushort queue_size; /* Max number of cp that can be queued */
|
|
ushort unused;
|
|
ushort scatt_size; /* Max number of entries in scatter/gather table */
|
|
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
|
unchar drqx : 2,
|
|
second : 1,
|
|
irq_tr : 1,
|
|
irq : 4;
|
|
unchar sync;
|
|
unchar : 4,
|
|
res1 : 1,
|
|
large_sg : 1,
|
|
forcaddr : 1,
|
|
isaena : 1;
|
|
unchar max_chan : 3,
|
|
max_id : 5;
|
|
unchar max_lun;
|
|
unchar eisa : 1,
|
|
pci : 1,
|
|
idquest : 1,
|
|
m1 : 1,
|
|
: 4;
|
|
#else
|
|
unchar irq : 4, /* Interrupt Request assigned to this controller */
|
|
irq_tr : 1, /* 0 for edge triggered, 1 for level triggered */
|
|
second : 1, /* 1 if this is a secondary (not primary) controller */
|
|
drqx : 2; /* DRQ Index (0=DMA0, 1=DMA7, 2=DMA6, 3=DMA5) */
|
|
unchar sync; /* 1 if scsi target id 7...0 is running sync scsi */
|
|
|
|
/* Structure extension defined in EATA 2.0B */
|
|
unchar isaena : 1, /* ISA i/o addressing is disabled/enabled */
|
|
forcaddr : 1, /* Port address has been forced */
|
|
large_sg : 1, /* 1 if large SG lists are supported */
|
|
res1 : 1,
|
|
: 4;
|
|
unchar max_id : 5, /* Max SCSI target ID number */
|
|
max_chan : 3; /* Max SCSI channel number on this board */
|
|
|
|
/* Structure extension defined in EATA 2.0C */
|
|
unchar max_lun; /* Max SCSI LUN number */
|
|
unchar
|
|
: 4,
|
|
m1 : 1, /* This is a PCI with an M1 chip installed */
|
|
idquest : 1, /* RAIDNUM returned is questionable */
|
|
pci : 1, /* This board is PCI */
|
|
eisa : 1; /* This board is EISA */
|
|
#endif
|
|
|
|
unchar raidnum; /* Uniquely identifies this HBA in a system */
|
|
unchar notused;
|
|
|
|
ushort ipad[247];
|
|
};
|
|
|
|
/* Board config structure */
|
|
struct eata_config {
|
|
ushort len; /* Number of bytes following this field */
|
|
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
|
unchar : 4,
|
|
tarena : 1,
|
|
mdpena : 1,
|
|
ocena : 1,
|
|
edis : 1;
|
|
#else
|
|
unchar edis : 1, /* Disable EATA interface after config command */
|
|
ocena : 1, /* Overlapped Commands Enabled */
|
|
mdpena : 1, /* Transfer all Modified Data Pointer Messages */
|
|
tarena : 1, /* Target Mode Enabled for this controller */
|
|
: 4;
|
|
#endif
|
|
unchar cpad[511];
|
|
};
|
|
|
|
/* Returned status packet structure */
|
|
struct mssp {
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
|
unchar eoc : 1,
|
|
adapter_status : 7;
|
|
#else
|
|
unchar adapter_status : 7, /* State related to current command */
|
|
eoc : 1; /* End Of Command (1 = command completed) */
|
|
#endif
|
|
unchar target_status; /* SCSI status received after data transfer */
|
|
unchar unused[2];
|
|
u_int32_t inv_res_len; /* Number of bytes not transferred */
|
|
u_int32_t cpp_index; /* Index of address set in cp */
|
|
char mess[12];
|
|
};
|
|
|
|
struct sg_list {
|
|
unsigned int address; /* Segment Address */
|
|
unsigned int num_bytes; /* Segment Length */
|
|
};
|
|
|
|
/* MailBox SCSI Command Packet */
|
|
struct mscp {
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
|
unchar din : 1,
|
|
dout : 1,
|
|
interp : 1,
|
|
: 1,
|
|
sg : 1,
|
|
reqsen :1,
|
|
init : 1,
|
|
sreset : 1;
|
|
unchar sense_len;
|
|
unchar unused[3];
|
|
unchar : 7,
|
|
fwnest : 1;
|
|
unchar : 5,
|
|
hbaci : 1,
|
|
iat : 1,
|
|
phsunit : 1;
|
|
unchar channel : 3,
|
|
target : 5;
|
|
unchar one : 1,
|
|
dispri : 1,
|
|
luntar : 1,
|
|
lun : 5;
|
|
#else
|
|
unchar sreset :1, /* SCSI Bus Reset Signal should be asserted */
|
|
init :1, /* Re-initialize controller and self test */
|
|
reqsen :1, /* Transfer Request Sense Data to addr using DMA */
|
|
sg :1, /* Use Scatter/Gather */
|
|
:1,
|
|
interp :1, /* The controller interprets cp, not the target */
|
|
dout :1, /* Direction of Transfer is Out (Host to Target) */
|
|
din :1; /* Direction of Transfer is In (Target to Host) */
|
|
unchar sense_len; /* Request Sense Length */
|
|
unchar unused[3];
|
|
unchar fwnest : 1, /* Send command to a component of an Array Group */
|
|
: 7;
|
|
unchar phsunit : 1, /* Send to Target Physical Unit (bypass RAID) */
|
|
iat : 1, /* Inhibit Address Translation */
|
|
hbaci : 1, /* Inhibit HBA Caching for this command */
|
|
: 5;
|
|
unchar target : 5, /* SCSI target ID */
|
|
channel : 3; /* SCSI channel number */
|
|
unchar lun : 5, /* SCSI logical unit number */
|
|
luntar : 1, /* This cp is for Target (not LUN) */
|
|
dispri : 1, /* Disconnect Privilege granted */
|
|
one : 1; /* 1 */
|
|
#endif
|
|
|
|
unchar mess[3]; /* Massage to/from Target */
|
|
unchar cdb[12]; /* Command Descriptor Block */
|
|
u_int32_t data_len; /* If sg=0 Data Length, if sg=1 sglist length */
|
|
u_int32_t cpp_index; /* Index of address to be returned in sp */
|
|
u_int32_t data_address; /* If sg=0 Data Address, if sg=1 sglist address */
|
|
u_int32_t sp_dma_addr; /* Address where sp is DMA'ed when cp completes */
|
|
u_int32_t sense_addr; /* Address where Sense Data is DMA'ed on error */
|
|
|
|
/* Additional fields begin here. */
|
|
struct scsi_cmnd *SCpnt;
|
|
|
|
/* All the cp structure is zero filled by queuecommand except the
|
|
following CP_TAIL_SIZE bytes, initialized by detect */
|
|
dma_addr_t cp_dma_addr; /* dma handle for this cp structure */
|
|
struct sg_list *sglist; /* pointer to the allocated SG list */
|
|
};
|
|
|
|
#define CP_TAIL_SIZE (sizeof(struct sglist *) + sizeof(dma_addr_t))
|
|
|
|
struct hostdata {
|
|
struct mscp cp[MAX_MAILBOXES]; /* Mailboxes for this board */
|
|
unsigned int cp_stat[MAX_MAILBOXES]; /* FREE, IN_USE, LOCKED, IN_RESET */
|
|
unsigned int last_cp_used; /* Index of last mailbox used */
|
|
unsigned int iocount; /* Total i/o done for this board */
|
|
int board_number; /* Number of this board */
|
|
char board_name[16]; /* Name of this board */
|
|
int in_reset; /* True if board is doing a reset */
|
|
int target_to[MAX_TARGET][MAX_CHANNEL]; /* N. of timeout errors on target */
|
|
int target_redo[MAX_TARGET][MAX_CHANNEL]; /* If 1 redo i/o on target */
|
|
unsigned int retries; /* Number of internal retries */
|
|
unsigned long last_retried_pid; /* Pid of last retried command */
|
|
unsigned char subversion; /* Bus type, either ISA or EISA/PCI */
|
|
unsigned char protocol_rev; /* EATA 2.0 rev., 'A' or 'B' or 'C' */
|
|
unsigned char is_pci; /* 1 is bus type is PCI */
|
|
struct pci_dev *pdev; /* pdev for PCI bus, NULL otherwise */
|
|
struct mssp *sp_cpu_addr; /* cpu addr for DMA buffer sp */
|
|
dma_addr_t sp_dma_addr; /* dma handle for DMA buffer sp */
|
|
struct mssp sp; /* Local copy of sp buffer */
|
|
};
|
|
|
|
static struct Scsi_Host *sh[MAX_BOARDS];
|
|
static const char *driver_name = "EATA";
|
|
static char sha[MAX_BOARDS];
|
|
|
|
/* Initialize num_boards so that ihdlr can work while detect is in progress */
|
|
static unsigned int num_boards = MAX_BOARDS;
|
|
|
|
static unsigned long io_port[] = {
|
|
|
|
/* Space for MAX_INT_PARAM ports usable while loading as a module */
|
|
SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
|
|
SKIP, SKIP,
|
|
|
|
/* First ISA */
|
|
0x1f0,
|
|
|
|
/* Space for MAX_PCI ports possibly reported by PCI_BIOS */
|
|
SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
|
|
SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
|
|
|
|
/* MAX_EISA ports */
|
|
0x1c88, 0x2c88, 0x3c88, 0x4c88, 0x5c88, 0x6c88, 0x7c88, 0x8c88,
|
|
0x9c88, 0xac88, 0xbc88, 0xcc88, 0xdc88, 0xec88, 0xfc88,
|
|
|
|
/* Other (MAX_ISA - 1) ports */
|
|
0x170, 0x230, 0x330,
|
|
|
|
/* End of list */
|
|
0x0
|
|
};
|
|
|
|
/* Device is Big Endian */
|
|
#define H2DEV(x) cpu_to_be32(x)
|
|
#define DEV2H(x) be32_to_cpu(x)
|
|
#define H2DEV16(x) cpu_to_be16(x)
|
|
#define DEV2H16(x) be16_to_cpu(x)
|
|
|
|
/* But transfer orientation from the 16 bit data register is Little Endian */
|
|
#define REG2H(x) le16_to_cpu(x)
|
|
|
|
static irqreturn_t do_interrupt_handler(int, void *);
|
|
static void flush_dev(struct scsi_device *, unsigned long, struct hostdata *,
|
|
unsigned int);
|
|
static int do_trace = 0;
|
|
static int setup_done = 0;
|
|
static int link_statistics;
|
|
static int ext_tran = 0;
|
|
static int rev_scan = 1;
|
|
|
|
#if defined(CONFIG_SCSI_EATA_TAGGED_QUEUE)
|
|
static int tag_mode = TAG_SIMPLE;
|
|
#else
|
|
static int tag_mode = TAG_DISABLED;
|
|
#endif
|
|
|
|
#if defined(CONFIG_SCSI_EATA_LINKED_COMMANDS)
|
|
static int linked_comm = 1;
|
|
#else
|
|
static int linked_comm = 0;
|
|
#endif
|
|
|
|
#if defined(CONFIG_SCSI_EATA_MAX_TAGS)
|
|
static int max_queue_depth = CONFIG_SCSI_EATA_MAX_TAGS;
|
|
#else
|
|
static int max_queue_depth = MAX_CMD_PER_LUN;
|
|
#endif
|
|
|
|
#if defined(CONFIG_ISA)
|
|
static int isa_probe = 1;
|
|
#else
|
|
static int isa_probe = 0;
|
|
#endif
|
|
|
|
#if defined(CONFIG_EISA)
|
|
static int eisa_probe = 1;
|
|
#else
|
|
static int eisa_probe = 0;
|
|
#endif
|
|
|
|
#if defined(CONFIG_PCI)
|
|
static int pci_probe = 1;
|
|
#else
|
|
static int pci_probe = 0;
|
|
#endif
|
|
|
|
#define MAX_INT_PARAM 10
|
|
#define MAX_BOOT_OPTIONS_SIZE 256
|
|
static char boot_options[MAX_BOOT_OPTIONS_SIZE];
|
|
|
|
#if defined(MODULE)
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
|
|
module_param_string(eata, boot_options, MAX_BOOT_OPTIONS_SIZE, 0);
|
|
MODULE_PARM_DESC(eata, " equivalent to the \"eata=...\" kernel boot option."
|
|
" Example: modprobe eata \"eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n\"");
|
|
MODULE_AUTHOR("Dario Ballabio");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("EATA/DMA SCSI Driver");
|
|
|
|
#endif
|
|
|
|
static int eata2x_slave_configure(struct scsi_device *dev)
|
|
{
|
|
int tqd, utqd;
|
|
char *tag_suffix, *link_suffix;
|
|
|
|
utqd = MAX_CMD_PER_LUN;
|
|
tqd = max_queue_depth;
|
|
|
|
if (TLDEV(dev->type) && dev->tagged_supported) {
|
|
if (tag_mode == TAG_SIMPLE) {
|
|
tag_suffix = ", simple tags";
|
|
} else if (tag_mode == TAG_ORDERED) {
|
|
tag_suffix = ", ordered tags";
|
|
} else {
|
|
tag_suffix = ", no tags";
|
|
}
|
|
scsi_change_queue_depth(dev, tqd);
|
|
} else if (TLDEV(dev->type) && linked_comm) {
|
|
scsi_change_queue_depth(dev, tqd);
|
|
tag_suffix = ", untagged";
|
|
} else {
|
|
scsi_change_queue_depth(dev, utqd);
|
|
tag_suffix = "";
|
|
}
|
|
|
|
if (TLDEV(dev->type) && linked_comm && dev->queue_depth > 2)
|
|
link_suffix = ", sorted";
|
|
else if (TLDEV(dev->type))
|
|
link_suffix = ", unsorted";
|
|
else
|
|
link_suffix = "";
|
|
|
|
sdev_printk(KERN_INFO, dev,
|
|
"cmds/lun %d%s%s.\n",
|
|
dev->queue_depth, link_suffix, tag_suffix);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wait_on_busy(unsigned long iobase, unsigned int loop)
|
|
{
|
|
while (inb(iobase + REG_AUX_STATUS) & ABSY_ASSERTED) {
|
|
udelay(1L);
|
|
if (--loop == 0)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int do_dma(unsigned long iobase, unsigned long addr, unchar cmd)
|
|
{
|
|
unsigned char *byaddr;
|
|
unsigned long devaddr;
|
|
|
|
if (wait_on_busy(iobase, (addr ? MAXLOOP * 100 : MAXLOOP)))
|
|
return 1;
|
|
|
|
if (addr) {
|
|
devaddr = H2DEV(addr);
|
|
byaddr = (unsigned char *)&devaddr;
|
|
outb(byaddr[3], iobase + REG_LOW);
|
|
outb(byaddr[2], iobase + REG_LM);
|
|
outb(byaddr[1], iobase + REG_MID);
|
|
outb(byaddr[0], iobase + REG_MSB);
|
|
}
|
|
|
|
outb(cmd, iobase + REG_CMD);
|
|
return 0;
|
|
}
|
|
|
|
static int read_pio(unsigned long iobase, ushort * start, ushort * end)
|
|
{
|
|
unsigned int loop = MAXLOOP;
|
|
ushort *p;
|
|
|
|
for (p = start; p <= end; p++) {
|
|
while (!(inb(iobase + REG_STATUS) & DRQ_ASSERTED)) {
|
|
udelay(1L);
|
|
if (--loop == 0)
|
|
return 1;
|
|
}
|
|
loop = MAXLOOP;
|
|
*p = REG2H(inw(iobase));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct pci_dev *get_pci_dev(unsigned long port_base)
|
|
{
|
|
#if defined(CONFIG_PCI)
|
|
unsigned int addr;
|
|
struct pci_dev *dev = NULL;
|
|
|
|
while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) {
|
|
addr = pci_resource_start(dev, 0);
|
|
|
|
#if defined(DEBUG_PCI_DETECT)
|
|
printk("%s: get_pci_dev, bus %d, devfn 0x%x, addr 0x%x.\n",
|
|
driver_name, dev->bus->number, dev->devfn, addr);
|
|
#endif
|
|
|
|
/* we are in so much trouble for a pci hotplug system with this driver
|
|
* anyway, so doing this at least lets people unload the driver and not
|
|
* cause memory problems, but in general this is a bad thing to do (this
|
|
* driver needs to be converted to the proper PCI api someday... */
|
|
pci_dev_put(dev);
|
|
if (addr + PCI_BASE_ADDRESS_0 == port_base)
|
|
return dev;
|
|
}
|
|
#endif /* end CONFIG_PCI */
|
|
return NULL;
|
|
}
|
|
|
|
static void enable_pci_ports(void)
|
|
{
|
|
#if defined(CONFIG_PCI)
|
|
struct pci_dev *dev = NULL;
|
|
|
|
while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) {
|
|
#if defined(DEBUG_PCI_DETECT)
|
|
printk("%s: enable_pci_ports, bus %d, devfn 0x%x.\n",
|
|
driver_name, dev->bus->number, dev->devfn);
|
|
#endif
|
|
|
|
if (pci_enable_device(dev))
|
|
printk
|
|
("%s: warning, pci_enable_device failed, bus %d devfn 0x%x.\n",
|
|
driver_name, dev->bus->number, dev->devfn);
|
|
}
|
|
|
|
#endif /* end CONFIG_PCI */
|
|
}
|
|
|
|
static int port_detect(unsigned long port_base, unsigned int j,
|
|
struct scsi_host_template *tpnt)
|
|
{
|
|
unsigned char irq, dma_channel, subversion, i, is_pci = 0;
|
|
unsigned char protocol_rev;
|
|
struct eata_info info;
|
|
char *bus_type, dma_name[16];
|
|
struct pci_dev *pdev;
|
|
/* Allowed DMA channels for ISA (0 indicates reserved) */
|
|
unsigned char dma_channel_table[4] = { 5, 6, 7, 0 };
|
|
struct Scsi_Host *shost;
|
|
struct hostdata *ha;
|
|
char name[16];
|
|
|
|
sprintf(name, "%s%d", driver_name, j);
|
|
|
|
if (!request_region(port_base, REGION_SIZE, driver_name)) {
|
|
#if defined(DEBUG_DETECT)
|
|
printk("%s: address 0x%03lx in use, skipping probe.\n", name,
|
|
port_base);
|
|
#endif
|
|
goto fail;
|
|
}
|
|
|
|
if (do_dma(port_base, 0, READ_CONFIG_PIO)) {
|
|
#if defined(DEBUG_DETECT)
|
|
printk("%s: detect, do_dma failed at 0x%03lx.\n", name,
|
|
port_base);
|
|
#endif
|
|
goto freelock;
|
|
}
|
|
|
|
/* Read the info structure */
|
|
if (read_pio(port_base, (ushort *) & info, (ushort *) & info.ipad[0])) {
|
|
#if defined(DEBUG_DETECT)
|
|
printk("%s: detect, read_pio failed at 0x%03lx.\n", name,
|
|
port_base);
|
|
#endif
|
|
goto freelock;
|
|
}
|
|
|
|
info.data_len = DEV2H(info.data_len);
|
|
info.sign = DEV2H(info.sign);
|
|
info.cp_pad_len = DEV2H16(info.cp_pad_len);
|
|
info.cp_len = DEV2H(info.cp_len);
|
|
info.sp_len = DEV2H(info.sp_len);
|
|
info.scatt_size = DEV2H16(info.scatt_size);
|
|
info.queue_size = DEV2H16(info.queue_size);
|
|
|
|
/* Check the controller "EATA" signature */
|
|
if (info.sign != EATA_SIG_BE) {
|
|
#if defined(DEBUG_DETECT)
|
|
printk("%s: signature 0x%04x discarded.\n", name, info.sign);
|
|
#endif
|
|
goto freelock;
|
|
}
|
|
|
|
if (info.data_len < EATA_2_0A_SIZE) {
|
|
printk
|
|
("%s: config structure size (%d bytes) too short, detaching.\n",
|
|
name, info.data_len);
|
|
goto freelock;
|
|
} else if (info.data_len == EATA_2_0A_SIZE)
|
|
protocol_rev = 'A';
|
|
else if (info.data_len == EATA_2_0B_SIZE)
|
|
protocol_rev = 'B';
|
|
else
|
|
protocol_rev = 'C';
|
|
|
|
if (protocol_rev != 'A' && info.forcaddr) {
|
|
printk("%s: warning, port address has been forced.\n", name);
|
|
bus_type = "PCI";
|
|
is_pci = 1;
|
|
subversion = ESA;
|
|
} else if (port_base > MAX_EISA_ADDR
|
|
|| (protocol_rev == 'C' && info.pci)) {
|
|
bus_type = "PCI";
|
|
is_pci = 1;
|
|
subversion = ESA;
|
|
} else if (port_base >= MIN_EISA_ADDR
|
|
|| (protocol_rev == 'C' && info.eisa)) {
|
|
bus_type = "EISA";
|
|
subversion = ESA;
|
|
} else if (protocol_rev == 'C' && !info.eisa && !info.pci) {
|
|
bus_type = "ISA";
|
|
subversion = ISA;
|
|
} else if (port_base > MAX_ISA_ADDR) {
|
|
bus_type = "PCI";
|
|
is_pci = 1;
|
|
subversion = ESA;
|
|
} else {
|
|
bus_type = "ISA";
|
|
subversion = ISA;
|
|
}
|
|
|
|
if (!info.haaval || info.ata) {
|
|
printk
|
|
("%s: address 0x%03lx, unusable %s board (%d%d), detaching.\n",
|
|
name, port_base, bus_type, info.haaval, info.ata);
|
|
goto freelock;
|
|
}
|
|
|
|
if (info.drqvld) {
|
|
if (subversion == ESA)
|
|
printk("%s: warning, weird %s board using DMA.\n", name,
|
|
bus_type);
|
|
|
|
subversion = ISA;
|
|
dma_channel = dma_channel_table[3 - info.drqx];
|
|
} else {
|
|
if (subversion == ISA)
|
|
printk("%s: warning, weird %s board not using DMA.\n",
|
|
name, bus_type);
|
|
|
|
subversion = ESA;
|
|
dma_channel = NO_DMA;
|
|
}
|
|
|
|
if (!info.dmasup)
|
|
printk("%s: warning, DMA protocol support not asserted.\n",
|
|
name);
|
|
|
|
irq = info.irq;
|
|
|
|
if (subversion == ESA && !info.irq_tr)
|
|
printk
|
|
("%s: warning, LEVEL triggering is suggested for IRQ %u.\n",
|
|
name, irq);
|
|
|
|
if (is_pci) {
|
|
pdev = get_pci_dev(port_base);
|
|
if (!pdev)
|
|
printk
|
|
("%s: warning, failed to get pci_dev structure.\n",
|
|
name);
|
|
} else
|
|
pdev = NULL;
|
|
|
|
if (pdev && (irq != pdev->irq)) {
|
|
printk("%s: IRQ %u mapped to IO-APIC IRQ %u.\n", name, irq,
|
|
pdev->irq);
|
|
irq = pdev->irq;
|
|
}
|
|
|
|
/* Board detected, allocate its IRQ */
|
|
if (request_irq(irq, do_interrupt_handler,
|
|
(subversion == ESA) ? IRQF_SHARED : 0,
|
|
driver_name, (void *)&sha[j])) {
|
|
printk("%s: unable to allocate IRQ %u, detaching.\n", name,
|
|
irq);
|
|
goto freelock;
|
|
}
|
|
|
|
if (subversion == ISA && request_dma(dma_channel, driver_name)) {
|
|
printk("%s: unable to allocate DMA channel %u, detaching.\n",
|
|
name, dma_channel);
|
|
goto freeirq;
|
|
}
|
|
#if defined(FORCE_CONFIG)
|
|
{
|
|
struct eata_config *cf;
|
|
dma_addr_t cf_dma_addr;
|
|
|
|
cf = pci_zalloc_consistent(pdev, sizeof(struct eata_config),
|
|
&cf_dma_addr);
|
|
|
|
if (!cf) {
|
|
printk
|
|
("%s: config, pci_alloc_consistent failed, detaching.\n",
|
|
name);
|
|
goto freedma;
|
|
}
|
|
|
|
/* Set board configuration */
|
|
cf->len = (ushort) H2DEV16((ushort) 510);
|
|
cf->ocena = 1;
|
|
|
|
if (do_dma(port_base, cf_dma_addr, SET_CONFIG_DMA)) {
|
|
printk
|
|
("%s: busy timeout sending configuration, detaching.\n",
|
|
name);
|
|
pci_free_consistent(pdev, sizeof(struct eata_config),
|
|
cf, cf_dma_addr);
|
|
goto freedma;
|
|
}
|
|
|
|
}
|
|
#endif
|
|
|
|
sh[j] = shost = scsi_register(tpnt, sizeof(struct hostdata));
|
|
if (shost == NULL) {
|
|
printk("%s: unable to register host, detaching.\n", name);
|
|
goto freedma;
|
|
}
|
|
|
|
shost->io_port = port_base;
|
|
shost->unique_id = port_base;
|
|
shost->n_io_port = REGION_SIZE;
|
|
shost->dma_channel = dma_channel;
|
|
shost->irq = irq;
|
|
shost->sg_tablesize = (ushort) info.scatt_size;
|
|
shost->this_id = (ushort) info.host_addr[3];
|
|
shost->can_queue = (ushort) info.queue_size;
|
|
shost->cmd_per_lun = MAX_CMD_PER_LUN;
|
|
|
|
ha = (struct hostdata *)shost->hostdata;
|
|
|
|
memset(ha, 0, sizeof(struct hostdata));
|
|
ha->subversion = subversion;
|
|
ha->protocol_rev = protocol_rev;
|
|
ha->is_pci = is_pci;
|
|
ha->pdev = pdev;
|
|
ha->board_number = j;
|
|
|
|
if (ha->subversion == ESA)
|
|
shost->unchecked_isa_dma = 0;
|
|
else {
|
|
unsigned long flags;
|
|
shost->unchecked_isa_dma = 1;
|
|
|
|
flags = claim_dma_lock();
|
|
disable_dma(dma_channel);
|
|
clear_dma_ff(dma_channel);
|
|
set_dma_mode(dma_channel, DMA_MODE_CASCADE);
|
|
enable_dma(dma_channel);
|
|
release_dma_lock(flags);
|
|
|
|
}
|
|
|
|
strcpy(ha->board_name, name);
|
|
|
|
/* DPT PM2012 does not allow to detect sg_tablesize correctly */
|
|
if (shost->sg_tablesize > MAX_SGLIST || shost->sg_tablesize < 2) {
|
|
printk("%s: detect, wrong n. of SG lists %d, fixed.\n",
|
|
ha->board_name, shost->sg_tablesize);
|
|
shost->sg_tablesize = MAX_SGLIST;
|
|
}
|
|
|
|
/* DPT PM2012 does not allow to detect can_queue correctly */
|
|
if (shost->can_queue > MAX_MAILBOXES || shost->can_queue < 2) {
|
|
printk("%s: detect, wrong n. of mbox %d, fixed.\n",
|
|
ha->board_name, shost->can_queue);
|
|
shost->can_queue = MAX_MAILBOXES;
|
|
}
|
|
|
|
if (protocol_rev != 'A') {
|
|
if (info.max_chan > 0 && info.max_chan < MAX_CHANNEL)
|
|
shost->max_channel = info.max_chan;
|
|
|
|
if (info.max_id > 7 && info.max_id < MAX_TARGET)
|
|
shost->max_id = info.max_id + 1;
|
|
|
|
if (info.large_sg && shost->sg_tablesize == MAX_SGLIST)
|
|
shost->sg_tablesize = MAX_LARGE_SGLIST;
|
|
}
|
|
|
|
if (protocol_rev == 'C') {
|
|
if (info.max_lun > 7 && info.max_lun < MAX_LUN)
|
|
shost->max_lun = info.max_lun + 1;
|
|
}
|
|
|
|
if (dma_channel == NO_DMA)
|
|
sprintf(dma_name, "%s", "BMST");
|
|
else
|
|
sprintf(dma_name, "DMA %u", dma_channel);
|
|
|
|
for (i = 0; i < shost->can_queue; i++)
|
|
ha->cp[i].cp_dma_addr = pci_map_single(ha->pdev,
|
|
&ha->cp[i],
|
|
sizeof(struct mscp),
|
|
PCI_DMA_BIDIRECTIONAL);
|
|
|
|
for (i = 0; i < shost->can_queue; i++) {
|
|
size_t sz = shost->sg_tablesize *sizeof(struct sg_list);
|
|
gfp_t gfp_mask = (shost->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC;
|
|
ha->cp[i].sglist = kmalloc(sz, gfp_mask);
|
|
if (!ha->cp[i].sglist) {
|
|
printk
|
|
("%s: kmalloc SGlist failed, mbox %d, detaching.\n",
|
|
ha->board_name, i);
|
|
goto release;
|
|
}
|
|
}
|
|
|
|
if (!(ha->sp_cpu_addr = pci_alloc_consistent(ha->pdev,
|
|
sizeof(struct mssp),
|
|
&ha->sp_dma_addr))) {
|
|
printk("%s: pci_alloc_consistent failed, detaching.\n", ha->board_name);
|
|
goto release;
|
|
}
|
|
|
|
if (max_queue_depth > MAX_TAGGED_CMD_PER_LUN)
|
|
max_queue_depth = MAX_TAGGED_CMD_PER_LUN;
|
|
|
|
if (max_queue_depth < MAX_CMD_PER_LUN)
|
|
max_queue_depth = MAX_CMD_PER_LUN;
|
|
|
|
if (tag_mode != TAG_DISABLED && tag_mode != TAG_SIMPLE)
|
|
tag_mode = TAG_ORDERED;
|
|
|
|
if (j == 0) {
|
|
printk
|
|
("EATA/DMA 2.0x: Copyright (C) 1994-2003 Dario Ballabio.\n");
|
|
printk
|
|
("%s config options -> tm:%d, lc:%c, mq:%d, rs:%c, et:%c, "
|
|
"ip:%c, ep:%c, pp:%c.\n", driver_name, tag_mode,
|
|
YESNO(linked_comm), max_queue_depth, YESNO(rev_scan),
|
|
YESNO(ext_tran), YESNO(isa_probe), YESNO(eisa_probe),
|
|
YESNO(pci_probe));
|
|
}
|
|
|
|
printk("%s: 2.0%c, %s 0x%03lx, IRQ %u, %s, SG %d, MB %d.\n",
|
|
ha->board_name, ha->protocol_rev, bus_type,
|
|
(unsigned long)shost->io_port, shost->irq, dma_name,
|
|
shost->sg_tablesize, shost->can_queue);
|
|
|
|
if (shost->max_id > 8 || shost->max_lun > 8)
|
|
printk
|
|
("%s: wide SCSI support enabled, max_id %u, max_lun %llu.\n",
|
|
ha->board_name, shost->max_id, shost->max_lun);
|
|
|
|
for (i = 0; i <= shost->max_channel; i++)
|
|
printk("%s: SCSI channel %u enabled, host target ID %d.\n",
|
|
ha->board_name, i, info.host_addr[3 - i]);
|
|
|
|
#if defined(DEBUG_DETECT)
|
|
printk("%s: Vers. 0x%x, ocs %u, tar %u, trnxfr %u, more %u, SYNC 0x%x, "
|
|
"sec. %u, infol %d, cpl %d spl %d.\n", name, info.version,
|
|
info.ocsena, info.tarsup, info.trnxfr, info.morsup, info.sync,
|
|
info.second, info.data_len, info.cp_len, info.sp_len);
|
|
|
|
if (protocol_rev == 'B' || protocol_rev == 'C')
|
|
printk("%s: isaena %u, forcaddr %u, max_id %u, max_chan %u, "
|
|
"large_sg %u, res1 %u.\n", name, info.isaena,
|
|
info.forcaddr, info.max_id, info.max_chan, info.large_sg,
|
|
info.res1);
|
|
|
|
if (protocol_rev == 'C')
|
|
printk("%s: max_lun %u, m1 %u, idquest %u, pci %u, eisa %u, "
|
|
"raidnum %u.\n", name, info.max_lun, info.m1,
|
|
info.idquest, info.pci, info.eisa, info.raidnum);
|
|
#endif
|
|
|
|
if (ha->pdev) {
|
|
pci_set_master(ha->pdev);
|
|
if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)))
|
|
printk("%s: warning, pci_set_dma_mask failed.\n",
|
|
ha->board_name);
|
|
}
|
|
|
|
return 1;
|
|
|
|
freedma:
|
|
if (subversion == ISA)
|
|
free_dma(dma_channel);
|
|
freeirq:
|
|
free_irq(irq, &sha[j]);
|
|
freelock:
|
|
release_region(port_base, REGION_SIZE);
|
|
fail:
|
|
return 0;
|
|
|
|
release:
|
|
eata2x_release(shost);
|
|
return 0;
|
|
}
|
|
|
|
static void internal_setup(char *str, int *ints)
|
|
{
|
|
int i, argc = ints[0];
|
|
char *cur = str, *pc;
|
|
|
|
if (argc > 0) {
|
|
if (argc > MAX_INT_PARAM)
|
|
argc = MAX_INT_PARAM;
|
|
|
|
for (i = 0; i < argc; i++)
|
|
io_port[i] = ints[i + 1];
|
|
|
|
io_port[i] = 0;
|
|
setup_done = 1;
|
|
}
|
|
|
|
while (cur && (pc = strchr(cur, ':'))) {
|
|
int val = 0, c = *++pc;
|
|
|
|
if (c == 'n' || c == 'N')
|
|
val = 0;
|
|
else if (c == 'y' || c == 'Y')
|
|
val = 1;
|
|
else
|
|
val = (int)simple_strtoul(pc, NULL, 0);
|
|
|
|
if (!strncmp(cur, "lc:", 3))
|
|
linked_comm = val;
|
|
else if (!strncmp(cur, "tm:", 3))
|
|
tag_mode = val;
|
|
else if (!strncmp(cur, "tc:", 3))
|
|
tag_mode = val;
|
|
else if (!strncmp(cur, "mq:", 3))
|
|
max_queue_depth = val;
|
|
else if (!strncmp(cur, "ls:", 3))
|
|
link_statistics = val;
|
|
else if (!strncmp(cur, "et:", 3))
|
|
ext_tran = val;
|
|
else if (!strncmp(cur, "rs:", 3))
|
|
rev_scan = val;
|
|
else if (!strncmp(cur, "ip:", 3))
|
|
isa_probe = val;
|
|
else if (!strncmp(cur, "ep:", 3))
|
|
eisa_probe = val;
|
|
else if (!strncmp(cur, "pp:", 3))
|
|
pci_probe = val;
|
|
|
|
if ((cur = strchr(cur, ',')))
|
|
++cur;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static int option_setup(char *str)
|
|
{
|
|
int ints[MAX_INT_PARAM];
|
|
char *cur = str;
|
|
int i = 1;
|
|
|
|
while (cur && isdigit(*cur) && i < MAX_INT_PARAM) {
|
|
ints[i++] = simple_strtoul(cur, NULL, 0);
|
|
|
|
if ((cur = strchr(cur, ',')) != NULL)
|
|
cur++;
|
|
}
|
|
|
|
ints[0] = i - 1;
|
|
internal_setup(cur, ints);
|
|
return 1;
|
|
}
|
|
|
|
static void add_pci_ports(void)
|
|
{
|
|
#if defined(CONFIG_PCI)
|
|
unsigned int addr, k;
|
|
struct pci_dev *dev = NULL;
|
|
|
|
for (k = 0; k < MAX_PCI; k++) {
|
|
|
|
if (!(dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev)))
|
|
break;
|
|
|
|
if (pci_enable_device(dev)) {
|
|
#if defined(DEBUG_PCI_DETECT)
|
|
printk
|
|
("%s: detect, bus %d, devfn 0x%x, pci_enable_device failed.\n",
|
|
driver_name, dev->bus->number, dev->devfn);
|
|
#endif
|
|
|
|
continue;
|
|
}
|
|
|
|
addr = pci_resource_start(dev, 0);
|
|
|
|
#if defined(DEBUG_PCI_DETECT)
|
|
printk("%s: detect, seq. %d, bus %d, devfn 0x%x, addr 0x%x.\n",
|
|
driver_name, k, dev->bus->number, dev->devfn, addr);
|
|
#endif
|
|
|
|
/* Order addresses according to rev_scan value */
|
|
io_port[MAX_INT_PARAM + (rev_scan ? (MAX_PCI - k) : (1 + k))] =
|
|
addr + PCI_BASE_ADDRESS_0;
|
|
}
|
|
|
|
pci_dev_put(dev);
|
|
#endif /* end CONFIG_PCI */
|
|
}
|
|
|
|
static int eata2x_detect(struct scsi_host_template *tpnt)
|
|
{
|
|
unsigned int j = 0, k;
|
|
|
|
tpnt->proc_name = "eata2x";
|
|
|
|
if (strlen(boot_options))
|
|
option_setup(boot_options);
|
|
|
|
#if defined(MODULE)
|
|
/* io_port could have been modified when loading as a module */
|
|
if (io_port[0] != SKIP) {
|
|
setup_done = 1;
|
|
io_port[MAX_INT_PARAM] = 0;
|
|
}
|
|
#endif
|
|
|
|
for (k = MAX_INT_PARAM; io_port[k]; k++)
|
|
if (io_port[k] == SKIP)
|
|
continue;
|
|
else if (io_port[k] <= MAX_ISA_ADDR) {
|
|
if (!isa_probe)
|
|
io_port[k] = SKIP;
|
|
} else if (io_port[k] >= MIN_EISA_ADDR
|
|
&& io_port[k] <= MAX_EISA_ADDR) {
|
|
if (!eisa_probe)
|
|
io_port[k] = SKIP;
|
|
}
|
|
|
|
if (pci_probe) {
|
|
if (!setup_done)
|
|
add_pci_ports();
|
|
else
|
|
enable_pci_ports();
|
|
}
|
|
|
|
for (k = 0; io_port[k]; k++) {
|
|
|
|
if (io_port[k] == SKIP)
|
|
continue;
|
|
|
|
if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt))
|
|
j++;
|
|
}
|
|
|
|
num_boards = j;
|
|
return j;
|
|
}
|
|
|
|
static void map_dma(unsigned int i, struct hostdata *ha)
|
|
{
|
|
unsigned int k, pci_dir;
|
|
int count;
|
|
struct scatterlist *sg;
|
|
struct mscp *cpp;
|
|
struct scsi_cmnd *SCpnt;
|
|
|
|
cpp = &ha->cp[i];
|
|
SCpnt = cpp->SCpnt;
|
|
pci_dir = SCpnt->sc_data_direction;
|
|
|
|
if (SCpnt->sense_buffer)
|
|
cpp->sense_addr =
|
|
H2DEV(pci_map_single(ha->pdev, SCpnt->sense_buffer,
|
|
SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE));
|
|
|
|
cpp->sense_len = SCSI_SENSE_BUFFERSIZE;
|
|
|
|
if (!scsi_sg_count(SCpnt)) {
|
|
cpp->data_len = 0;
|
|
return;
|
|
}
|
|
|
|
count = pci_map_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt),
|
|
pci_dir);
|
|
BUG_ON(!count);
|
|
|
|
scsi_for_each_sg(SCpnt, sg, count, k) {
|
|
cpp->sglist[k].address = H2DEV(sg_dma_address(sg));
|
|
cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(sg));
|
|
}
|
|
|
|
cpp->sg = 1;
|
|
cpp->data_address = H2DEV(pci_map_single(ha->pdev, cpp->sglist,
|
|
scsi_sg_count(SCpnt) *
|
|
sizeof(struct sg_list),
|
|
pci_dir));
|
|
cpp->data_len = H2DEV((scsi_sg_count(SCpnt) * sizeof(struct sg_list)));
|
|
}
|
|
|
|
static void unmap_dma(unsigned int i, struct hostdata *ha)
|
|
{
|
|
unsigned int pci_dir;
|
|
struct mscp *cpp;
|
|
struct scsi_cmnd *SCpnt;
|
|
|
|
cpp = &ha->cp[i];
|
|
SCpnt = cpp->SCpnt;
|
|
pci_dir = SCpnt->sc_data_direction;
|
|
|
|
if (DEV2H(cpp->sense_addr))
|
|
pci_unmap_single(ha->pdev, DEV2H(cpp->sense_addr),
|
|
DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);
|
|
|
|
if (scsi_sg_count(SCpnt))
|
|
pci_unmap_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt),
|
|
pci_dir);
|
|
|
|
if (!DEV2H(cpp->data_len))
|
|
pci_dir = PCI_DMA_BIDIRECTIONAL;
|
|
|
|
if (DEV2H(cpp->data_address))
|
|
pci_unmap_single(ha->pdev, DEV2H(cpp->data_address),
|
|
DEV2H(cpp->data_len), pci_dir);
|
|
}
|
|
|
|
static void sync_dma(unsigned int i, struct hostdata *ha)
|
|
{
|
|
unsigned int pci_dir;
|
|
struct mscp *cpp;
|
|
struct scsi_cmnd *SCpnt;
|
|
|
|
cpp = &ha->cp[i];
|
|
SCpnt = cpp->SCpnt;
|
|
pci_dir = SCpnt->sc_data_direction;
|
|
|
|
if (DEV2H(cpp->sense_addr))
|
|
pci_dma_sync_single_for_cpu(ha->pdev, DEV2H(cpp->sense_addr),
|
|
DEV2H(cpp->sense_len),
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
if (scsi_sg_count(SCpnt))
|
|
pci_dma_sync_sg_for_cpu(ha->pdev, scsi_sglist(SCpnt),
|
|
scsi_sg_count(SCpnt), pci_dir);
|
|
|
|
if (!DEV2H(cpp->data_len))
|
|
pci_dir = PCI_DMA_BIDIRECTIONAL;
|
|
|
|
if (DEV2H(cpp->data_address))
|
|
pci_dma_sync_single_for_cpu(ha->pdev,
|
|
DEV2H(cpp->data_address),
|
|
DEV2H(cpp->data_len), pci_dir);
|
|
}
|
|
|
|
static void scsi_to_dev_dir(unsigned int i, struct hostdata *ha)
|
|
{
|
|
unsigned int k;
|
|
|
|
static const unsigned char data_out_cmds[] = {
|
|
0x0a, 0x2a, 0x15, 0x55, 0x04, 0x07, 0x18, 0x1d, 0x24, 0x2e,
|
|
0x30, 0x31, 0x32, 0x38, 0x39, 0x3a, 0x3b, 0x3d, 0x3f, 0x40,
|
|
0x41, 0x4c, 0xaa, 0xae, 0xb0, 0xb1, 0xb2, 0xb6, 0xea, 0x1b, 0x5d
|
|
};
|
|
|
|
static const unsigned char data_none_cmds[] = {
|
|
0x01, 0x0b, 0x10, 0x11, 0x13, 0x16, 0x17, 0x19, 0x2b, 0x1e,
|
|
0x2c, 0xac, 0x2f, 0xaf, 0x33, 0xb3, 0x35, 0x36, 0x45, 0x47,
|
|
0x48, 0x49, 0xa9, 0x4b, 0xa5, 0xa6, 0xb5, 0x00
|
|
};
|
|
|
|
struct mscp *cpp;
|
|
struct scsi_cmnd *SCpnt;
|
|
|
|
cpp = &ha->cp[i];
|
|
SCpnt = cpp->SCpnt;
|
|
|
|
if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) {
|
|
cpp->din = 1;
|
|
cpp->dout = 0;
|
|
return;
|
|
} else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) {
|
|
cpp->din = 0;
|
|
cpp->dout = 1;
|
|
return;
|
|
} else if (SCpnt->sc_data_direction == DMA_NONE) {
|
|
cpp->din = 0;
|
|
cpp->dout = 0;
|
|
return;
|
|
}
|
|
|
|
if (SCpnt->sc_data_direction != DMA_BIDIRECTIONAL)
|
|
panic("%s: qcomm, invalid SCpnt->sc_data_direction.\n",
|
|
ha->board_name);
|
|
|
|
for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++)
|
|
if (SCpnt->cmnd[0] == data_out_cmds[k]) {
|
|
cpp->dout = 1;
|
|
break;
|
|
}
|
|
|
|
if ((cpp->din = !cpp->dout))
|
|
for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++)
|
|
if (SCpnt->cmnd[0] == data_none_cmds[k]) {
|
|
cpp->din = 0;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
static int eata2x_queuecommand_lck(struct scsi_cmnd *SCpnt,
|
|
void (*done) (struct scsi_cmnd *))
|
|
{
|
|
struct Scsi_Host *shost = SCpnt->device->host;
|
|
struct hostdata *ha = (struct hostdata *)shost->hostdata;
|
|
unsigned int i, k;
|
|
struct mscp *cpp;
|
|
|
|
if (SCpnt->host_scribble)
|
|
panic("%s: qcomm, SCpnt %p already active.\n",
|
|
ha->board_name, SCpnt);
|
|
|
|
/* i is the mailbox number, look for the first free mailbox
|
|
starting from last_cp_used */
|
|
i = ha->last_cp_used + 1;
|
|
|
|
for (k = 0; k < shost->can_queue; k++, i++) {
|
|
if (i >= shost->can_queue)
|
|
i = 0;
|
|
if (ha->cp_stat[i] == FREE) {
|
|
ha->last_cp_used = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (k == shost->can_queue) {
|
|
printk("%s: qcomm, no free mailbox.\n", ha->board_name);
|
|
return 1;
|
|
}
|
|
|
|
/* Set pointer to control packet structure */
|
|
cpp = &ha->cp[i];
|
|
|
|
memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE);
|
|
|
|
/* Set pointer to status packet structure, Big Endian format */
|
|
cpp->sp_dma_addr = H2DEV(ha->sp_dma_addr);
|
|
|
|
SCpnt->scsi_done = done;
|
|
cpp->cpp_index = i;
|
|
SCpnt->host_scribble = (unsigned char *)&cpp->cpp_index;
|
|
|
|
if (do_trace)
|
|
scmd_printk(KERN_INFO, SCpnt,
|
|
"qcomm, mbox %d.\n", i);
|
|
|
|
cpp->reqsen = 1;
|
|
cpp->dispri = 1;
|
|
#if 0
|
|
if (SCpnt->device->type == TYPE_TAPE)
|
|
cpp->hbaci = 1;
|
|
#endif
|
|
cpp->one = 1;
|
|
cpp->channel = SCpnt->device->channel;
|
|
cpp->target = SCpnt->device->id;
|
|
cpp->lun = SCpnt->device->lun;
|
|
cpp->SCpnt = SCpnt;
|
|
memcpy(cpp->cdb, SCpnt->cmnd, SCpnt->cmd_len);
|
|
|
|
/* Use data transfer direction SCpnt->sc_data_direction */
|
|
scsi_to_dev_dir(i, ha);
|
|
|
|
/* Map DMA buffers and SG list */
|
|
map_dma(i, ha);
|
|
|
|
if (linked_comm && SCpnt->device->queue_depth > 2
|
|
&& TLDEV(SCpnt->device->type)) {
|
|
ha->cp_stat[i] = READY;
|
|
flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), ha, 0);
|
|
return 0;
|
|
}
|
|
|
|
/* Send control packet to the board */
|
|
if (do_dma(shost->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) {
|
|
unmap_dma(i, ha);
|
|
SCpnt->host_scribble = NULL;
|
|
scmd_printk(KERN_INFO, SCpnt, "qcomm, adapter busy.\n");
|
|
return 1;
|
|
}
|
|
|
|
ha->cp_stat[i] = IN_USE;
|
|
return 0;
|
|
}
|
|
|
|
static DEF_SCSI_QCMD(eata2x_queuecommand)
|
|
|
|
static int eata2x_eh_abort(struct scsi_cmnd *SCarg)
|
|
{
|
|
struct Scsi_Host *shost = SCarg->device->host;
|
|
struct hostdata *ha = (struct hostdata *)shost->hostdata;
|
|
unsigned int i;
|
|
|
|
if (SCarg->host_scribble == NULL) {
|
|
scmd_printk(KERN_INFO, SCarg, "abort, cmd inactive.\n");
|
|
return SUCCESS;
|
|
}
|
|
|
|
i = *(unsigned int *)SCarg->host_scribble;
|
|
scmd_printk(KERN_WARNING, SCarg, "abort, mbox %d.\n", i);
|
|
|
|
if (i >= shost->can_queue)
|
|
panic("%s: abort, invalid SCarg->host_scribble.\n", ha->board_name);
|
|
|
|
if (wait_on_busy(shost->io_port, MAXLOOP)) {
|
|
printk("%s: abort, timeout error.\n", ha->board_name);
|
|
return FAILED;
|
|
}
|
|
|
|
if (ha->cp_stat[i] == FREE) {
|
|
printk("%s: abort, mbox %d is free.\n", ha->board_name, i);
|
|
return SUCCESS;
|
|
}
|
|
|
|
if (ha->cp_stat[i] == IN_USE) {
|
|
printk("%s: abort, mbox %d is in use.\n", ha->board_name, i);
|
|
|
|
if (SCarg != ha->cp[i].SCpnt)
|
|
panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n",
|
|
ha->board_name, i, SCarg, ha->cp[i].SCpnt);
|
|
|
|
if (inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED)
|
|
printk("%s: abort, mbox %d, interrupt pending.\n",
|
|
ha->board_name, i);
|
|
|
|
return FAILED;
|
|
}
|
|
|
|
if (ha->cp_stat[i] == IN_RESET) {
|
|
printk("%s: abort, mbox %d is in reset.\n", ha->board_name, i);
|
|
return FAILED;
|
|
}
|
|
|
|
if (ha->cp_stat[i] == LOCKED) {
|
|
printk("%s: abort, mbox %d is locked.\n", ha->board_name, i);
|
|
return SUCCESS;
|
|
}
|
|
|
|
if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) {
|
|
unmap_dma(i, ha);
|
|
SCarg->result = DID_ABORT << 16;
|
|
SCarg->host_scribble = NULL;
|
|
ha->cp_stat[i] = FREE;
|
|
printk("%s, abort, mbox %d ready, DID_ABORT, done.\n",
|
|
ha->board_name, i);
|
|
SCarg->scsi_done(SCarg);
|
|
return SUCCESS;
|
|
}
|
|
|
|
panic("%s: abort, mbox %d, invalid cp_stat.\n", ha->board_name, i);
|
|
}
|
|
|
|
static int eata2x_eh_host_reset(struct scsi_cmnd *SCarg)
|
|
{
|
|
unsigned int i, time, k, c, limit = 0;
|
|
int arg_done = 0;
|
|
struct scsi_cmnd *SCpnt;
|
|
struct Scsi_Host *shost = SCarg->device->host;
|
|
struct hostdata *ha = (struct hostdata *)shost->hostdata;
|
|
|
|
scmd_printk(KERN_INFO, SCarg, "reset, enter.\n");
|
|
|
|
spin_lock_irq(shost->host_lock);
|
|
|
|
if (SCarg->host_scribble == NULL)
|
|
printk("%s: reset, inactive.\n", ha->board_name);
|
|
|
|
if (ha->in_reset) {
|
|
printk("%s: reset, exit, already in reset.\n", ha->board_name);
|
|
spin_unlock_irq(shost->host_lock);
|
|
return FAILED;
|
|
}
|
|
|
|
if (wait_on_busy(shost->io_port, MAXLOOP)) {
|
|
printk("%s: reset, exit, timeout error.\n", ha->board_name);
|
|
spin_unlock_irq(shost->host_lock);
|
|
return FAILED;
|
|
}
|
|
|
|
ha->retries = 0;
|
|
|
|
for (c = 0; c <= shost->max_channel; c++)
|
|
for (k = 0; k < shost->max_id; k++) {
|
|
ha->target_redo[k][c] = 1;
|
|
ha->target_to[k][c] = 0;
|
|
}
|
|
|
|
for (i = 0; i < shost->can_queue; i++) {
|
|
|
|
if (ha->cp_stat[i] == FREE)
|
|
continue;
|
|
|
|
if (ha->cp_stat[i] == LOCKED) {
|
|
ha->cp_stat[i] = FREE;
|
|
printk("%s: reset, locked mbox %d forced free.\n",
|
|
ha->board_name, i);
|
|
continue;
|
|
}
|
|
|
|
if (!(SCpnt = ha->cp[i].SCpnt))
|
|
panic("%s: reset, mbox %d, SCpnt == NULL.\n", ha->board_name, i);
|
|
|
|
if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) {
|
|
ha->cp_stat[i] = ABORTING;
|
|
printk("%s: reset, mbox %d aborting.\n",
|
|
ha->board_name, i);
|
|
}
|
|
|
|
else {
|
|
ha->cp_stat[i] = IN_RESET;
|
|
printk("%s: reset, mbox %d in reset.\n",
|
|
ha->board_name, i);
|
|
}
|
|
|
|
if (SCpnt->host_scribble == NULL)
|
|
panic("%s: reset, mbox %d, garbled SCpnt.\n", ha->board_name, i);
|
|
|
|
if (*(unsigned int *)SCpnt->host_scribble != i)
|
|
panic("%s: reset, mbox %d, index mismatch.\n", ha->board_name, i);
|
|
|
|
if (SCpnt->scsi_done == NULL)
|
|
panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n",
|
|
ha->board_name, i);
|
|
|
|
if (SCpnt == SCarg)
|
|
arg_done = 1;
|
|
}
|
|
|
|
if (do_dma(shost->io_port, 0, RESET_PIO)) {
|
|
printk("%s: reset, cannot reset, timeout error.\n", ha->board_name);
|
|
spin_unlock_irq(shost->host_lock);
|
|
return FAILED;
|
|
}
|
|
|
|
printk("%s: reset, board reset done, enabling interrupts.\n", ha->board_name);
|
|
|
|
#if defined(DEBUG_RESET)
|
|
do_trace = 1;
|
|
#endif
|
|
|
|
ha->in_reset = 1;
|
|
|
|
spin_unlock_irq(shost->host_lock);
|
|
|
|
/* FIXME: use a sleep instead */
|
|
time = jiffies;
|
|
while ((jiffies - time) < (10 * HZ) && limit++ < 200000)
|
|
udelay(100L);
|
|
|
|
spin_lock_irq(shost->host_lock);
|
|
|
|
printk("%s: reset, interrupts disabled, loops %d.\n", ha->board_name, limit);
|
|
|
|
for (i = 0; i < shost->can_queue; i++) {
|
|
|
|
if (ha->cp_stat[i] == IN_RESET) {
|
|
SCpnt = ha->cp[i].SCpnt;
|
|
unmap_dma(i, ha);
|
|
SCpnt->result = DID_RESET << 16;
|
|
SCpnt->host_scribble = NULL;
|
|
|
|
/* This mailbox is still waiting for its interrupt */
|
|
ha->cp_stat[i] = LOCKED;
|
|
|
|
printk
|
|
("%s, reset, mbox %d locked, DID_RESET, done.\n",
|
|
ha->board_name, i);
|
|
}
|
|
|
|
else if (ha->cp_stat[i] == ABORTING) {
|
|
SCpnt = ha->cp[i].SCpnt;
|
|
unmap_dma(i, ha);
|
|
SCpnt->result = DID_RESET << 16;
|
|
SCpnt->host_scribble = NULL;
|
|
|
|
/* This mailbox was never queued to the adapter */
|
|
ha->cp_stat[i] = FREE;
|
|
|
|
printk
|
|
("%s, reset, mbox %d aborting, DID_RESET, done.\n",
|
|
ha->board_name, i);
|
|
}
|
|
|
|
else
|
|
/* Any other mailbox has already been set free by interrupt */
|
|
continue;
|
|
|
|
SCpnt->scsi_done(SCpnt);
|
|
}
|
|
|
|
ha->in_reset = 0;
|
|
do_trace = 0;
|
|
|
|
if (arg_done)
|
|
printk("%s: reset, exit, done.\n", ha->board_name);
|
|
else
|
|
printk("%s: reset, exit.\n", ha->board_name);
|
|
|
|
spin_unlock_irq(shost->host_lock);
|
|
return SUCCESS;
|
|
}
|
|
|
|
int eata2x_bios_param(struct scsi_device *sdev, struct block_device *bdev,
|
|
sector_t capacity, int *dkinfo)
|
|
{
|
|
unsigned int size = capacity;
|
|
|
|
if (ext_tran || (scsicam_bios_param(bdev, capacity, dkinfo) < 0)) {
|
|
dkinfo[0] = 255;
|
|
dkinfo[1] = 63;
|
|
dkinfo[2] = size / (dkinfo[0] * dkinfo[1]);
|
|
}
|
|
#if defined (DEBUG_GEOMETRY)
|
|
printk("%s: bios_param, head=%d, sec=%d, cyl=%d.\n", driver_name,
|
|
dkinfo[0], dkinfo[1], dkinfo[2]);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void sort(unsigned long sk[], unsigned int da[], unsigned int n,
|
|
unsigned int rev)
|
|
{
|
|
unsigned int i, j, k, y;
|
|
unsigned long x;
|
|
|
|
for (i = 0; i < n - 1; i++) {
|
|
k = i;
|
|
|
|
for (j = k + 1; j < n; j++)
|
|
if (rev) {
|
|
if (sk[j] > sk[k])
|
|
k = j;
|
|
} else {
|
|
if (sk[j] < sk[k])
|
|
k = j;
|
|
}
|
|
|
|
if (k != i) {
|
|
x = sk[k];
|
|
sk[k] = sk[i];
|
|
sk[i] = x;
|
|
y = da[k];
|
|
da[k] = da[i];
|
|
da[i] = y;
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static int reorder(struct hostdata *ha, unsigned long cursec,
|
|
unsigned int ihdlr, unsigned int il[], unsigned int n_ready)
|
|
{
|
|
struct scsi_cmnd *SCpnt;
|
|
struct mscp *cpp;
|
|
unsigned int k, n;
|
|
unsigned int rev = 0, s = 1, r = 1;
|
|
unsigned int input_only = 1, overlap = 0;
|
|
unsigned long sl[n_ready], pl[n_ready], ll[n_ready];
|
|
unsigned long maxsec = 0, minsec = ULONG_MAX, seek = 0, iseek = 0;
|
|
unsigned long ioseek = 0;
|
|
|
|
static unsigned int flushcount = 0, batchcount = 0, sortcount = 0;
|
|
static unsigned int readycount = 0, ovlcount = 0, inputcount = 0;
|
|
static unsigned int readysorted = 0, revcount = 0;
|
|
static unsigned long seeksorted = 0, seeknosort = 0;
|
|
|
|
if (link_statistics && !(++flushcount % link_statistics))
|
|
printk("fc %d bc %d ic %d oc %d rc %d rs %d sc %d re %d"
|
|
" av %ldK as %ldK.\n", flushcount, batchcount,
|
|
inputcount, ovlcount, readycount, readysorted, sortcount,
|
|
revcount, seeknosort / (readycount + 1),
|
|
seeksorted / (readycount + 1));
|
|
|
|
if (n_ready <= 1)
|
|
return 0;
|
|
|
|
for (n = 0; n < n_ready; n++) {
|
|
k = il[n];
|
|
cpp = &ha->cp[k];
|
|
SCpnt = cpp->SCpnt;
|
|
|
|
if (!cpp->din)
|
|
input_only = 0;
|
|
|
|
if (blk_rq_pos(SCpnt->request) < minsec)
|
|
minsec = blk_rq_pos(SCpnt->request);
|
|
if (blk_rq_pos(SCpnt->request) > maxsec)
|
|
maxsec = blk_rq_pos(SCpnt->request);
|
|
|
|
sl[n] = blk_rq_pos(SCpnt->request);
|
|
ioseek += blk_rq_sectors(SCpnt->request);
|
|
|
|
if (!n)
|
|
continue;
|
|
|
|
if (sl[n] < sl[n - 1])
|
|
s = 0;
|
|
if (sl[n] > sl[n - 1])
|
|
r = 0;
|
|
|
|
if (link_statistics) {
|
|
if (sl[n] > sl[n - 1])
|
|
seek += sl[n] - sl[n - 1];
|
|
else
|
|
seek += sl[n - 1] - sl[n];
|
|
}
|
|
|
|
}
|
|
|
|
if (link_statistics) {
|
|
if (cursec > sl[0])
|
|
seek += cursec - sl[0];
|
|
else
|
|
seek += sl[0] - cursec;
|
|
}
|
|
|
|
if (cursec > ((maxsec + minsec) / 2))
|
|
rev = 1;
|
|
|
|
if (ioseek > ((maxsec - minsec) / 2))
|
|
rev = 0;
|
|
|
|
if (!((rev && r) || (!rev && s)))
|
|
sort(sl, il, n_ready, rev);
|
|
|
|
if (!input_only)
|
|
for (n = 0; n < n_ready; n++) {
|
|
k = il[n];
|
|
cpp = &ha->cp[k];
|
|
SCpnt = cpp->SCpnt;
|
|
ll[n] = blk_rq_sectors(SCpnt->request);
|
|
pl[n] = SCpnt->serial_number;
|
|
|
|
if (!n)
|
|
continue;
|
|
|
|
if ((sl[n] == sl[n - 1])
|
|
|| (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n]))
|
|
|| (rev && ((sl[n] + ll[n]) > sl[n - 1])))
|
|
overlap = 1;
|
|
}
|
|
|
|
if (overlap)
|
|
sort(pl, il, n_ready, 0);
|
|
|
|
if (link_statistics) {
|
|
if (cursec > sl[0])
|
|
iseek = cursec - sl[0];
|
|
else
|
|
iseek = sl[0] - cursec;
|
|
batchcount++;
|
|
readycount += n_ready;
|
|
seeknosort += seek / 1024;
|
|
if (input_only)
|
|
inputcount++;
|
|
if (overlap) {
|
|
ovlcount++;
|
|
seeksorted += iseek / 1024;
|
|
} else
|
|
seeksorted += (iseek + maxsec - minsec) / 1024;
|
|
if (rev && !r) {
|
|
revcount++;
|
|
readysorted += n_ready;
|
|
}
|
|
if (!rev && !s) {
|
|
sortcount++;
|
|
readysorted += n_ready;
|
|
}
|
|
}
|
|
#if defined(DEBUG_LINKED_COMMANDS)
|
|
if (link_statistics && (overlap || !(flushcount % link_statistics)))
|
|
for (n = 0; n < n_ready; n++) {
|
|
k = il[n];
|
|
cpp = &ha->cp[k];
|
|
SCpnt = cpp->SCpnt;
|
|
scmd_printk(KERN_INFO, SCpnt,
|
|
"%s mb %d fc %d nr %d sec %ld ns %u"
|
|
" cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n",
|
|
(ihdlr ? "ihdlr" : "qcomm"),
|
|
k, flushcount,
|
|
n_ready, blk_rq_pos(SCpnt->request),
|
|
blk_rq_sectors(SCpnt->request), cursec, YESNO(s),
|
|
YESNO(r), YESNO(rev), YESNO(input_only),
|
|
YESNO(overlap), cpp->din);
|
|
}
|
|
#endif
|
|
return overlap;
|
|
}
|
|
|
|
static void flush_dev(struct scsi_device *dev, unsigned long cursec,
|
|
struct hostdata *ha, unsigned int ihdlr)
|
|
{
|
|
struct scsi_cmnd *SCpnt;
|
|
struct mscp *cpp;
|
|
unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES];
|
|
|
|
for (k = 0; k < dev->host->can_queue; k++) {
|
|
|
|
if (ha->cp_stat[k] != READY && ha->cp_stat[k] != IN_USE)
|
|
continue;
|
|
|
|
cpp = &ha->cp[k];
|
|
SCpnt = cpp->SCpnt;
|
|
|
|
if (SCpnt->device != dev)
|
|
continue;
|
|
|
|
if (ha->cp_stat[k] == IN_USE)
|
|
return;
|
|
|
|
il[n_ready++] = k;
|
|
}
|
|
|
|
if (reorder(ha, cursec, ihdlr, il, n_ready))
|
|
n_ready = 1;
|
|
|
|
for (n = 0; n < n_ready; n++) {
|
|
k = il[n];
|
|
cpp = &ha->cp[k];
|
|
SCpnt = cpp->SCpnt;
|
|
|
|
if (do_dma(dev->host->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) {
|
|
scmd_printk(KERN_INFO, SCpnt,
|
|
"%s, mbox %d, adapter"
|
|
" busy, will abort.\n",
|
|
(ihdlr ? "ihdlr" : "qcomm"),
|
|
k);
|
|
ha->cp_stat[k] = ABORTING;
|
|
continue;
|
|
}
|
|
|
|
ha->cp_stat[k] = IN_USE;
|
|
}
|
|
}
|
|
|
|
static irqreturn_t ihdlr(struct Scsi_Host *shost)
|
|
{
|
|
struct scsi_cmnd *SCpnt;
|
|
unsigned int i, k, c, status, tstatus, reg;
|
|
struct mssp *spp;
|
|
struct mscp *cpp;
|
|
struct hostdata *ha = (struct hostdata *)shost->hostdata;
|
|
int irq = shost->irq;
|
|
|
|
/* Check if this board need to be serviced */
|
|
if (!(inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED))
|
|
goto none;
|
|
|
|
ha->iocount++;
|
|
|
|
if (do_trace)
|
|
printk("%s: ihdlr, enter, irq %d, count %d.\n", ha->board_name, irq,
|
|
ha->iocount);
|
|
|
|
/* Check if this board is still busy */
|
|
if (wait_on_busy(shost->io_port, 20 * MAXLOOP)) {
|
|
reg = inb(shost->io_port + REG_STATUS);
|
|
printk
|
|
("%s: ihdlr, busy timeout error, irq %d, reg 0x%x, count %d.\n",
|
|
ha->board_name, irq, reg, ha->iocount);
|
|
goto none;
|
|
}
|
|
|
|
spp = &ha->sp;
|
|
|
|
/* Make a local copy just before clearing the interrupt indication */
|
|
memcpy(spp, ha->sp_cpu_addr, sizeof(struct mssp));
|
|
|
|
/* Clear the completion flag and cp pointer on the dynamic copy of sp */
|
|
memset(ha->sp_cpu_addr, 0, sizeof(struct mssp));
|
|
|
|
/* Read the status register to clear the interrupt indication */
|
|
reg = inb(shost->io_port + REG_STATUS);
|
|
|
|
#if defined (DEBUG_INTERRUPT)
|
|
{
|
|
unsigned char *bytesp;
|
|
int cnt;
|
|
bytesp = (unsigned char *)spp;
|
|
if (ha->iocount < 200) {
|
|
printk("sp[] =");
|
|
for (cnt = 0; cnt < 15; cnt++)
|
|
printk(" 0x%x", bytesp[cnt]);
|
|
printk("\n");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Reject any sp with supspect data */
|
|
if (spp->eoc == 0 && ha->iocount > 1)
|
|
printk
|
|
("%s: ihdlr, spp->eoc == 0, irq %d, reg 0x%x, count %d.\n",
|
|
ha->board_name, irq, reg, ha->iocount);
|
|
if (spp->cpp_index < 0 || spp->cpp_index >= shost->can_queue)
|
|
printk
|
|
("%s: ihdlr, bad spp->cpp_index %d, irq %d, reg 0x%x, count %d.\n",
|
|
ha->board_name, spp->cpp_index, irq, reg, ha->iocount);
|
|
if (spp->eoc == 0 || spp->cpp_index < 0
|
|
|| spp->cpp_index >= shost->can_queue)
|
|
goto handled;
|
|
|
|
/* Find the mailbox to be serviced on this board */
|
|
i = spp->cpp_index;
|
|
|
|
cpp = &(ha->cp[i]);
|
|
|
|
#if defined(DEBUG_GENERATE_ABORTS)
|
|
if ((ha->iocount > 500) && ((ha->iocount % 500) < 3))
|
|
goto handled;
|
|
#endif
|
|
|
|
if (ha->cp_stat[i] == IGNORE) {
|
|
ha->cp_stat[i] = FREE;
|
|
goto handled;
|
|
} else if (ha->cp_stat[i] == LOCKED) {
|
|
ha->cp_stat[i] = FREE;
|
|
printk("%s: ihdlr, mbox %d unlocked, count %d.\n", ha->board_name, i,
|
|
ha->iocount);
|
|
goto handled;
|
|
} else if (ha->cp_stat[i] == FREE) {
|
|
printk("%s: ihdlr, mbox %d is free, count %d.\n", ha->board_name, i,
|
|
ha->iocount);
|
|
goto handled;
|
|
} else if (ha->cp_stat[i] == IN_RESET)
|
|
printk("%s: ihdlr, mbox %d is in reset.\n", ha->board_name, i);
|
|
else if (ha->cp_stat[i] != IN_USE)
|
|
panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n",
|
|
ha->board_name, i, ha->cp_stat[i]);
|
|
|
|
ha->cp_stat[i] = FREE;
|
|
SCpnt = cpp->SCpnt;
|
|
|
|
if (SCpnt == NULL)
|
|
panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", ha->board_name, i);
|
|
|
|
if (SCpnt->host_scribble == NULL)
|
|
panic("%s: ihdlr, mbox %d, SCpnt %p garbled.\n", ha->board_name,
|
|
i, SCpnt);
|
|
|
|
if (*(unsigned int *)SCpnt->host_scribble != i)
|
|
panic("%s: ihdlr, mbox %d, index mismatch %d.\n",
|
|
ha->board_name, i,
|
|
*(unsigned int *)SCpnt->host_scribble);
|
|
|
|
sync_dma(i, ha);
|
|
|
|
if (linked_comm && SCpnt->device->queue_depth > 2
|
|
&& TLDEV(SCpnt->device->type))
|
|
flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), ha, 1);
|
|
|
|
tstatus = status_byte(spp->target_status);
|
|
|
|
#if defined(DEBUG_GENERATE_ERRORS)
|
|
if ((ha->iocount > 500) && ((ha->iocount % 200) < 2))
|
|
spp->adapter_status = 0x01;
|
|
#endif
|
|
|
|
switch (spp->adapter_status) {
|
|
case ASOK: /* status OK */
|
|
|
|
/* Forces a reset if a disk drive keeps returning BUSY */
|
|
if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE)
|
|
status = DID_ERROR << 16;
|
|
|
|
/* If there was a bus reset, redo operation on each target */
|
|
else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK
|
|
&& ha->target_redo[SCpnt->device->id][SCpnt->
|
|
device->
|
|
channel])
|
|
status = DID_BUS_BUSY << 16;
|
|
|
|
/* Works around a flaw in scsi.c */
|
|
else if (tstatus == CHECK_CONDITION
|
|
&& SCpnt->device->type == TYPE_DISK
|
|
&& (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
|
|
status = DID_BUS_BUSY << 16;
|
|
|
|
else
|
|
status = DID_OK << 16;
|
|
|
|
if (tstatus == GOOD)
|
|
ha->target_redo[SCpnt->device->id][SCpnt->device->
|
|
channel] = 0;
|
|
|
|
if (spp->target_status && SCpnt->device->type == TYPE_DISK &&
|
|
(!(tstatus == CHECK_CONDITION && ha->iocount <= 1000 &&
|
|
(SCpnt->sense_buffer[2] & 0xf) == NOT_READY)))
|
|
printk("%s: ihdlr, target %d.%d:%d, "
|
|
"target_status 0x%x, sense key 0x%x.\n",
|
|
ha->board_name,
|
|
SCpnt->device->channel, SCpnt->device->id,
|
|
(u8)SCpnt->device->lun,
|
|
spp->target_status, SCpnt->sense_buffer[2]);
|
|
|
|
ha->target_to[SCpnt->device->id][SCpnt->device->channel] = 0;
|
|
|
|
if (ha->last_retried_pid == SCpnt->serial_number)
|
|
ha->retries = 0;
|
|
|
|
break;
|
|
case ASST: /* Selection Time Out */
|
|
case 0x02: /* Command Time Out */
|
|
|
|
if (ha->target_to[SCpnt->device->id][SCpnt->device->channel] > 1)
|
|
status = DID_ERROR << 16;
|
|
else {
|
|
status = DID_TIME_OUT << 16;
|
|
ha->target_to[SCpnt->device->id][SCpnt->device->
|
|
channel]++;
|
|
}
|
|
|
|
break;
|
|
|
|
/* Perform a limited number of internal retries */
|
|
case 0x03: /* SCSI Bus Reset Received */
|
|
case 0x04: /* Initial Controller Power-up */
|
|
|
|
for (c = 0; c <= shost->max_channel; c++)
|
|
for (k = 0; k < shost->max_id; k++)
|
|
ha->target_redo[k][c] = 1;
|
|
|
|
if (SCpnt->device->type != TYPE_TAPE
|
|
&& ha->retries < MAX_INTERNAL_RETRIES) {
|
|
|
|
#if defined(DID_SOFT_ERROR)
|
|
status = DID_SOFT_ERROR << 16;
|
|
#else
|
|
status = DID_BUS_BUSY << 16;
|
|
#endif
|
|
|
|
ha->retries++;
|
|
ha->last_retried_pid = SCpnt->serial_number;
|
|
} else
|
|
status = DID_ERROR << 16;
|
|
|
|
break;
|
|
case 0x05: /* Unexpected Bus Phase */
|
|
case 0x06: /* Unexpected Bus Free */
|
|
case 0x07: /* Bus Parity Error */
|
|
case 0x08: /* SCSI Hung */
|
|
case 0x09: /* Unexpected Message Reject */
|
|
case 0x0a: /* SCSI Bus Reset Stuck */
|
|
case 0x0b: /* Auto Request-Sense Failed */
|
|
case 0x0c: /* Controller Ram Parity Error */
|
|
default:
|
|
status = DID_ERROR << 16;
|
|
break;
|
|
}
|
|
|
|
SCpnt->result = status | spp->target_status;
|
|
|
|
#if defined(DEBUG_INTERRUPT)
|
|
if (SCpnt->result || do_trace)
|
|
#else
|
|
if ((spp->adapter_status != ASOK && ha->iocount > 1000) ||
|
|
(spp->adapter_status != ASOK &&
|
|
spp->adapter_status != ASST && ha->iocount <= 1000) ||
|
|
do_trace || msg_byte(spp->target_status))
|
|
#endif
|
|
scmd_printk(KERN_INFO, SCpnt, "ihdlr, mbox %2d, err 0x%x:%x,"
|
|
" reg 0x%x, count %d.\n",
|
|
i, spp->adapter_status, spp->target_status,
|
|
reg, ha->iocount);
|
|
|
|
unmap_dma(i, ha);
|
|
|
|
/* Set the command state to inactive */
|
|
SCpnt->host_scribble = NULL;
|
|
|
|
SCpnt->scsi_done(SCpnt);
|
|
|
|
if (do_trace)
|
|
printk("%s: ihdlr, exit, irq %d, count %d.\n", ha->board_name,
|
|
irq, ha->iocount);
|
|
|
|
handled:
|
|
return IRQ_HANDLED;
|
|
none:
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
static irqreturn_t do_interrupt_handler(int dummy, void *shap)
|
|
{
|
|
struct Scsi_Host *shost;
|
|
unsigned int j;
|
|
unsigned long spin_flags;
|
|
irqreturn_t ret;
|
|
|
|
/* Check if the interrupt must be processed by this handler */
|
|
if ((j = (unsigned int)((char *)shap - sha)) >= num_boards)
|
|
return IRQ_NONE;
|
|
shost = sh[j];
|
|
|
|
spin_lock_irqsave(shost->host_lock, spin_flags);
|
|
ret = ihdlr(shost);
|
|
spin_unlock_irqrestore(shost->host_lock, spin_flags);
|
|
return ret;
|
|
}
|
|
|
|
static int eata2x_release(struct Scsi_Host *shost)
|
|
{
|
|
struct hostdata *ha = (struct hostdata *)shost->hostdata;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < shost->can_queue; i++)
|
|
kfree((&ha->cp[i])->sglist);
|
|
|
|
for (i = 0; i < shost->can_queue; i++)
|
|
pci_unmap_single(ha->pdev, ha->cp[i].cp_dma_addr,
|
|
sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL);
|
|
|
|
if (ha->sp_cpu_addr)
|
|
pci_free_consistent(ha->pdev, sizeof(struct mssp),
|
|
ha->sp_cpu_addr, ha->sp_dma_addr);
|
|
|
|
free_irq(shost->irq, &sha[ha->board_number]);
|
|
|
|
if (shost->dma_channel != NO_DMA)
|
|
free_dma(shost->dma_channel);
|
|
|
|
release_region(shost->io_port, shost->n_io_port);
|
|
scsi_unregister(shost);
|
|
return 0;
|
|
}
|
|
|
|
#include "scsi_module.c"
|
|
|
|
#ifndef MODULE
|
|
__setup("eata=", option_setup);
|
|
#endif /* end MODULE */
|