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* Remove trailing whitespace per mdoc lint warningeadler2012-03-291-2/+2
| | | | | | | Disussed with: gavin No objection from: doc Approved by: joel MFC after: 3 days
* Remove superfluous paragraph macro.joel2012-03-251-1/+0
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* Fix build when RELEASE_CRUNCH is defined.nyan2012-01-291-2/+2
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* Add CAM infrastructure to allow reporting when a drive's long read capacityken2012-01-261-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | data changes. cam_ccb.h: Add a new advanced information type, CDAI_TYPE_RCAPLONG, for long read capacity data. cam_xpt_internal.h: Add a read capacity data pointer and length to struct cam_ed. cam_xpt.c: Free the read capacity buffer when a device goes away. While we're here, make sure we don't leak memory for other malloced fields in struct cam_ed. scsi_all.c: Update the scsi_read_capacity_16() to take a uint8_t * and a length instead of just a pointer to the parameter data structure. This will hopefully make this function somewhat immune to future changes in the parameter data. scsi_all.h: Add some extra bit definitions to struct scsi_read_capacity_data_long, and bump up the structure size to the full size specified by SBC-3. Change the prototype for scsi_read_capacity_16(). scsi_da.c: Register changes in read capacity data with the transport layer. This allows the transport layer to send out an async notification to interested parties. Update the dasetgeom() API. Use scsi_extract_sense_len() instead of scsi_extract_sense(). scsi_xpt.c: Add support for the new CDAI_TYPE_RCAPLONG advanced information type. Make sure we set the physpath pointer to NULL after freeing it. This allows blindly freeing it in the struct cam_ed destructor. sys/param.h: Bump __FreeBSD_version from 1000005 to 1000006 to make it easier for third party drivers to determine that the read capacity data async notification is available. camcontrol.c, mptutil/mpt_cam.c: Update these for the new scsi_read_capacity_16() argument structure. Sponsored by: Spectra Logic
* Fix warning when compiling with gcc46:eadler2012-01-102-6/+1
| | | | | | | | | error: variable 'freq' set but not used error: variable 'mode_pars' set but not used Reviewed by: mav Approved by: dim MFC after: 3 days
* Spelling fixes for sbin/uqs2012-01-071-1/+1
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* In sbin/camcontrol/camcontrol.c, fix a few warnings about format stringsdim2011-12-161-7/+7
| | | | | | not being literals. MFC after: 1 week
* Add missing static keywords to global variables in camcontrol.ed2011-12-112-13/+13
| | | | | While there, make the vendor list const and add appropriate keywords to functions that use this list.
* Restore comment with credit to Marc Frajola.emaste2011-12-021-0/+9
| | | | | fwdownload.c is derived from Andre Albsmeier's fwdownload.c, which was written from scratch but was inspired by Marc's original idea and code.
* Fix build.delphij2011-11-251-1/+1
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* Add firmware update support for SCSI devices.emaste2011-11-256-29/+488
| | | | | | | | | | | | | | | | | Firmware can be reprogrammed on devices from Hitachi, HP, IBM, Plextor, Quantum, and Seagate. At least one device from each manufacturer has been tested with some version of this code, and it has been used to update thousands of drives so far. The man page suggests having a backup of the drive's data, and the operation must be confirmed, either interactively or on the command line. (This is the same as the confirmation on the format command.) This work is largely derived from fwprog.c by Andre Albsmeier. Submitted by: Nima Misaghian Sponsored by: Sandvine Incorporated MFC after: 3 months
* Add missing static keywords for global variables to tools in sbin/.ed2011-11-041-4/+4
| | | | | | These tools declare global variables without using the static keyword, even though their use is limited to a single C-file, or without placing an extern declaration of them in the proper header file.
* Add descriptor sense support to CAM, and honor sense residuals properly inken2011-10-031-8/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CAM. Desriptor sense is a new sense data format that originated in SPC-3. Among other things, it allows for an 8-byte info field, which is necessary to pass back block numbers larger than 4 bytes. This change adds a number of new functions to scsi_all.c (and therefore libcam) that abstract out most access to sense data. This includes a bump of CAM_VERSION, because the CCB ABI has changed. Userland programs that use the CAM pass(4) driver will need to be recompiled. camcontrol.c: Change uses of scsi_extract_sense() to use scsi_extract_sense_len(). Use scsi_get_sks() instead of accessing sense key specific data directly. scsi_modes: Update the control mode page to the latest version (SPC-4). scsi_cmds.c, scsi_target.c: Change references to struct scsi_sense_data to struct scsi_sense_data_fixed. This should be changed to allow the user to specify fixed or descriptor sense, and then use scsi_set_sense_data() to build the sense data. ps3cdrom.c: Use scsi_set_sense_data() instead of setting sense data manually. cam_periph.c: Use scsi_extract_sense_len() instead of using scsi_extract_sense() or accessing sense data directly. cam_ccb.h: Bump the CAM_VERSION from 0x15 to 0x16. The change of struct scsi_sense_data from 32 to 252 bytes changes the size of struct ccb_scsiio, but not the size of union ccb. So the version must be bumped to prevent structure mis-matches. scsi_all.h: Lots of updated SCSI sense data and other structures. Add function prototypes for the new sense data functions. Take out the inline implementation of scsi_extract_sense(). It is now too large to put in a header file. Add macros to calculate whether fields are present and filled in fixed and descriptor sense data scsi_all.c: In scsi_op_desc(), allow the user to pass in NULL inquiry data, and we'll assume a direct access device in that case. Changed the SCSI RESERVED sense key name and description to COMPLETED, as it is now defined in the spec. Change the error recovery action for a number of read errors to prevent lots of retries when the drive has said that the block isn't accessible. This speeds up reconstruction of the block by any RAID software running on top of the drive (e.g. ZFS). In scsi_sense_desc(), allow for invalid sense key numbers. This allows calling this routine without checking the input values first. Change scsi_error_action() to use scsi_extract_sense_len(), and handle things when invalid asc/ascq values are encountered. Add a new routine, scsi_desc_iterate(), that will call the supplied function for every descriptor in descriptor format sense data. Add scsi_set_sense_data(), and scsi_set_sense_data_va(), which build descriptor and fixed format sense data. They currently default to fixed format sense data. Add a number of scsi_get_*() functions, which get different types of sense data fields from either fixed or descriptor format sense data, if the data is present. Add a number of scsi_*_sbuf() functions, which print formatted versions of various sense data fields. These functions work for either fixed or descriptor sense. Add a number of scsi_sense_*_sbuf() functions, which have a standard calling interface and print the indicated field. These functions take descriptors only. Add scsi_sense_desc_sbuf(), which will print a formatted version of the given sense descriptor. Pull out a majority of the scsi_sense_sbuf() function and put it into scsi_sense_only_sbuf(). This allows callers that don't use struct ccb_scsiio to easily utilize the printing routines. Revamp that function to handle descriptor sense and use the new sense fetching and printing routines. Move scsi_extract_sense() into scsi_all.c, and implement it in terms of the new function, scsi_extract_sense_len(). The _len() version takes a length (which should be the sense length - residual) and can indicate which fields are present and valid in the sense data. Add a couple of new scsi_get_*() routines to get the sense key, asc, and ascq only. mly.c: Rename struct scsi_sense_data to struct scsi_sense_data_fixed. sbp_targ.c: Use the new sense fetching routines to get sense data instead of accessing it directly. sbp.c: Change the firewire/SCSI sense data transformation code to use struct scsi_sense_data_fixed instead of struct scsi_sense_data. This should be changed later to use scsi_set_sense_data(). ciss.c: Calculate the sense residual properly. Use scsi_get_sense_key() to fetch the sense key. mps_sas.c, mpt_cam.c: Set the sense residual properly. iir.c: Use scsi_set_sense_data() instead of building sense data by hand. iscsi_subr.c: Use scsi_extract_sense_len() instead of grabbing sense data directly. umass.c: Use scsi_set_sense_data() to build sense data. Grab the sense key using scsi_get_sense_key(). Calculate the sense residual properly. isp_freebsd.h: Use scsi_get_*() routines to grab asc, ascq, and sense key values. Calculate and set the sense residual. MFC after: 3 days Sponsored by: Spectra Logic Corporation
* Fix WWN printing in `camcontrol identify` output.mav2011-08-191-1/+1
| | | | | Approved by: re (kib) MFC after: 1 week
* Lay groundwork in CAM for recording and reporting physical path andgibbs2011-06-141-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | other device attributes stored in the CAM Existing Device Table (EDT). This includes some infrastructure requried by the enclosure services driver to export physical path information. Make the CAM device advanced info interface accept store requests. sys/cam/scsi/scsi_all.c: sys/cam/scsi/scsi_all.h: - Replace scsi_get_sas_addr() with a scsi_get_devid() which takes a callback that decides whether to accept a particular descriptor. Provide callbacks for NAA IEEE Registered addresses and for SAS addresses, replacing the old function. This is needed because the old function doesn't work for an enclosure address for a SAS device, which is not flagged as a SAS address, but is NAA IEEE Registered. It may be worthwhile merging this interface with the devid match interface. - Add a few more defines for some device ID fields. sbin/camcontrol/camcontrol.c: - Update for the CCB_DEV_ADVINFO interface change. cam/cam_xpt_internal.h: - Add the new fields for the physical path string to the CAM EDT. cam/cam_ccb.h: - Rename CCB_GDEV_ADVINFO to simply CCB_DEV_ADVINFO, and the ccb structure to ccb_dev_advinfo. - Add a flag that changes this CCB's action to store, rather than the default, retrieve. - Add a new buffer type, CDAI_TYPE_PHYS_PATH, for the new CAM EDT physpath field. - Remove the never-implemented transport & proto flags. cam/cam_xpt.c: cam/cam_xpt.h: - Add xpt_getattr(), which provides a wrapper for fetching a device's attribute using the GEOM strings as key. This method currently supports "GEOM::ident" and "GEOM::physpath". Submitted by: will Reviewed by : gibbs Extend the XPT_DEV_MATCH api to allow a device search by device ID. As far as the API is concerned, device ID is a binary blob to be interpreted by the transport layer. The SCSI implementation assumes it is an array of VPD device ID descriptors. sys/cam/cam_ccb.h: Create a new structure, device_id_match_pattern, and update the XPT_DEV_MATCH datastructures and flags so that this pattern type can be used. sys/cam/cam_xpt.c: - A single pattern matching on both inquiry data and device ID is invalid. Report any violators. - Pass device ID match requests through to the new routine scsi_devid_match(). The direct call of a SCSI routine is a layering violation, but no worse than the one a few lines up that checks inquiry data. Defer cleaning this up until our future, larger, rototilling of CAM. - Zero out cam_ed and cam_et nodes on allocation. Prior to this change, device_id_len and device_id were not inialized, preventing proper detection of the presence of this information. sys/cam/scsi/scsi_all.c: sys/cam/scsi/scsi_all.h: Add the scsi_match_devid() routine. Add a helper function for extracting peripherial driver names sys/cam/cam_periph.c: sys/cam/cam_periph.h: Add the cam_periph_list() method which fills an sbuf with a comma delimited list of the peripheral instances associated with a given CAM path. Add a helper functions for SCSI commands used by the SES driver. sys/cam/scsi/scsi_all.c: sys/cam/scsi/scsi_all.h: Add structure definitions and csio filling functions for the receive diagnostic results and send diagnostic commands. Misc CAM XPT cleanups. sys/cam/cam_xpt.c: Broadcast AC_FOUND_DEVICE and AC_PATH_REGISTERED events at the time async event handlers are attached even when registering just for events on a partitular SIM. Previously, you had to register for these events on all SIMs in the system in order to get the initial broadcast even though subsequent device and path arrivals would be delivered. sys/cam/cam_xpt.c: Remove SIM mutex held asserts from path accessors. CAM paths are reference counted and it is this reference count, not the sim mutex, that garantees they are stable. Sponsored by: Spectra Logic Corporation
* When calling XPT_REL_SIMQ to ajust number of openings, do not try to reallymav2011-04-201-0/+1
| | | | | release device. We haven't frozen the device before and attempt to release it will at least cause warning message from kernel.
* The camcontrol smppc option to clear a PHY error log is 'clearerrlog',ken2011-01-051-1/+1
| | | | not 'clearerrorlog'.
* Fix a few issues related to the XPT_GDEV_ADVINFO CCB.ken2010-12-101-12/+34
| | | | | | | | | | | | | | | | | | | | | | | | camcontrol.c: In buildbusdevlist(), don't attempt to get call getdevid() for an unconfigured device, even when the verbose flag is set. The cam_open_btl() call will almost certainly fail. Probe for the buffer size when issuing the XPT_GDEV_ADVINFO CCB. Probing for the buffer size first helps us avoid allocating the maximum buffer size when it really may not be necessary. This also helps avoid errors from cam_periph_mapmem() if we attempt to map more than MAXPHYS. cam_periph.c: In cam_periph_mapmem(), if the XPT_GDEV_ADVINFO CCB shows a bufsiz of 0, we don't have anything to map, so just return. Also, set the maximum mapping size to MAXPHYS instead of DFLTPHYS for XPT_GDEV_ADVINFO CCBs, since they don't actually go down to the hardware. scsi_pass.c: Don't bother mapping the buffer in XPT_GDEV_ADVINFO CCBs if bufsiz is 0.
* Add Serial Management Protocol (SMP) passthrough support to CAM.ken2010-11-302-12/+1538
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This includes support in the kernel, camcontrol(8), libcam and the mps(4) driver for SMP passthrough. The CAM SCSI probe code has been modified to fetch Inquiry VPD page 0x00 to determine supported pages, and will now fetch page 0x83 in addition to page 0x80 if supported. Add two new CAM CCBs, XPT_SMP_IO, and XPT_GDEV_ADVINFO. The SMP CCB is intended for SMP requests and responses. The ADVINFO is currently used to fetch cached VPD page 0x83 data from the transport layer, but is intended to be extensible to fetch other types of device-specific data. SMP-only devices are not currently represented in the CAM topology, and so the current semantics are that the SIM will route SMP CCBs to either the addressed device, if it contains an SMP target, or its parent, if it contains an SMP target. (This is noted in cam_ccb.h, since it will change later once we have the ability to have SMP-only devices in CAM's topology.) smp_all.c, smp_all.h: New helper routines for SMP. This includes SMP request building routines, response parsing routines, error decoding routines, and structure definitions for a number of SMP commands. libcam/Makefile: Add smp_all.c to libcam, so that SMP functionality is available to userland applications. camcontrol.8, camcontrol.c: Add smp passthrough support to camcontrol. Several new subcommands are now available: 'smpcmd' functions much like 'cmd', except that it allows the user to send generic SMP commands. 'smprg' sends the SMP report general command, and displays the decoded output. It will automatically fetch extended output if it is available. 'smppc' sends the SMP phy control command, with any number of potential options. Among other things, this allows the user to reset a phy on a SAS expander, or disable a phy on an expander. 'smpmaninfo' sends the SMP report manufacturer information and displays the decoded output. 'smpphylist' displays a list of phys on an expander, and the CAM devices attached to those phys, if any. cam.h, cam.c: Add a status value for SMP errors (CAM_SMP_STATUS_ERROR). Add a missing description for CAM_SCSI_IT_NEXUS_LOST. Add support for SMP commands to cam_error_string(). cam_ccb.h: Rename the CAM_DIR_RESV flag to CAM_DIR_BOTH. SMP commands are by nature bi-directional, and we may need to support bi-directional SCSI commands later. Add the XPT_SMP_IO CCB. Since SMP commands are bi-directional, there are pointers for both the request and response. Add a fill routine for SMP CCBs. Add the XPT_GDEV_ADVINFO CCB. This is currently used to fetch cached page 0x83 data from the transport later, but is extensible to fetch many other types of data. cam_periph.c: Add support in cam_periph_mapmem() for XPT_SMP_IO and XPT_GDEV_ADVINFO CCBs. cam_xpt.c: Add support for executing XPT_SMP_IO CCBs. cam_xpt_internal.h: Add fields for VPD pages 0x00 and 0x83 in struct cam_ed. scsi_all.c: Add scsi_get_sas_addr(), a function that parses VPD page 0x83 data and pulls out a SAS address. scsi_all.h: Add VPD page 0x00 and 0x83 structures, and a prototype for scsi_get_sas_addr(). scsi_pass.c: Add support for mapping buffers in XPT_SMP_IO and XPT_GDEV_ADVINFO CCBs. scsi_xpt.c: In the SCSI probe code, first ask the device for VPD page 0x00. If any VPD pages are supported, that page is required to be implemented. Based on the response, we may probe for the serial number (page 0x80) or device id (page 0x83). Add support for the XPT_GDEV_ADVINFO CCB. sys/conf/files: Add smp_all.c. mps.c: Add support for passing in a uio in mps_map_command(), so we can map a S/G list at once. Add support for SMP passthrough commands in mps_data_cb(). SMP is a special case, because the first buffer in the S/G list is outbound and the second buffer is inbound. Add support for warning the user if the busdma code comes back with more buffers than will work for the command. This will, for example, help the user determine why an SMP command failed if busdma comes back with three buffers. mps_pci.c: Add sys/uio.h. mps_sas.c: Add the SAS address and the parent handle to the list of fields we pull from device page 0 and cache in struct mpssas_target. These are needed for SMP passthrough. Add support for the XPT_SMP_IO CCB. For now, this CCB is routed to the addressed device if it supports SMP, or to its parent if it does not and the parent does. This is necessary because CAM does not currently support SMP-only nodes in the topology. Make SMP passthrough support conditional on __FreeBSD_version >= 900026. This will make it easier to MFC this change to the driver without MFCing the CAM changes as well. mps_user.c: Un-staticize mpi_init_sge() so we can use it for the SMP passthrough code. mpsvar.h: Add a uio and iovecs into struct mps_command for SMP passthrough commands. Add a cm_max_segs field to struct mps_command so that we can warn the user if busdma comes back with too many segments. Clear the cm_reply when a command gets freed. If it is not cleared, reply frames will eventually get freed into the pool multiple times and corrupt the pool. (This fix is from scottl.) Add a prototype for mpi_init_sge(). sys/param.h: Bump __FreeBSD_version to 900026 for the for the inclusion of the XPT_GDEV_ADVINFO and XPT_SMP_IO CAM CCBs.
* When doing a camcontrol rescan all or a camcontrol reset all, use the wildcardrstone2010-11-191-0/+1
| | | | | | | | | | path id for enumerating the available busses. Previously camcontrol was implicitly passing 0 as the first path id, which meant that if bus 0 was not present camcontrol would fail with EINVAL instead of rescanning/resetting any busses that were present. Approved by: emaste (mentor) MFC after: 1 week
* r214781 caused the timer value to be rounded down, so that if the user askedbrucec2010-11-041-6/+4
| | | | | | | for 59 minutes 30 was sent to the drive. The timer value is now always rounded up. Reported by: mav
* Fix standby timer calculation: the timer was being set 30 minutes laterbrucec2010-11-041-1/+8
| | | | | | | | than the user requested. Also, 21 minutes is encoded as 252 and 22-29 minutes cannot be encoded so must be rounded up to 30. PR: bin/151871
* Do some whitespace and `identify` output cleanup.mav2010-10-251-50/+57
| | | | | Submitted by: arundel MFC after: 2 weeks
* Stop disallowing device nodes to be passed to camcontrol(8) since libcambrucec2010-10-192-12/+1
| | | | | | already allows both device names and nodes to be specified. Reviewed by: avg
* mdoc: drop redundant .Pp and .LP callsuqs2010-10-081-6/+0
| | | | They have no effect when coming in pairs, or before .Bl/.Bd
* MFtbemd:imp2010-08-231-1/+2
| | | | | Prefer MACHNE_CPUARCH to MACHINE_ARCH in most contexts where you want to test of all the CPUs of a given family conform.
* Spelling fixes.joel2010-07-311-1/+1
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* Export PCI IDs of ATA/SATA controllers through CAM and ata(4) layers tomav2010-07-251-0/+10
| | | | | GEOM. This information needed for proper soft-RAID's on-disk metadata reading and writing.
* Correct explanation for idle and standby subcommands' -t argument.mav2010-07-011-5/+7
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* Initialize variables before usage.uqs2010-06-111-0/+1
| | | | | Found by: clang static analyzer Found by: Coverity Prevent[tm] (CID 7736, 7760)
* Make SATA XPT negotiate and enable some additional SATA features, such as:mav2010-05-021-0/+4
| | | | | | | - device initiated power management (some devices support only this way); - Automatic Partial to Slumber Transition (more power saving); - DMA auto-activation (expected to slightly improve performance). More features could be added later, when hardware supports.
* Add -d and -f arguments to `camcontrol cmd`, to execute DMA ATA commands.mav2010-05-022-3/+21
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* Improve output for controllers that doesn't report SATA speed.mav2010-02-221-0/+2
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* - Give ATA/SATA SIMs info about ATAPI packet size, supported by device.mav2010-02-021-2/+14
| | | | | - Make ATA XPT to reject longer SCSI CDBs then supported by device, or any SCSI CDBs, if device doesn't support ATAPI.
* - Add -v argument to `camcontrol identify` command. It makes camcontrolmav2010-01-202-16/+34
| | | | | print full identify data block. - Improve identify result view and add TRIM support.
* MFp4:mav2009-11-262-51/+72
| | | | Improve ATA mode/SATA revision control.
* MFp4:mav2009-11-241-14/+69
| | | | | | | | | | | | - Extend XPT-SIM transfer settings control API. Now it allows to report to SATA SIM number of tags supported by each device, implement ATA mode and SATA revision negotiation for both SATA and PATA SIMs. - Make ahci(4) and siis(4) to use submitted maximum tag number, when scheduling requests. It allows to support NCQ on devices with lower tags count then controller supports. - Make PMP driver to report attached devices connection speeds. - Implement ATA mode negotiation between user settings, device and controller capabilities.
* Fix variable type.mav2009-11-091-1/+1
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* Add support for ATA Power Management.mav2009-11-092-3/+134
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* MFp4:mav2009-11-041-0/+4
| | | | | | - Add support for sector size > 512 bytes and physical sector of several logical sectors, introduced by ATA-7 specification. - Remove some obsoleted code.
* MFp4:mav2009-10-311-40/+57
| | | | | Sync connection speed reporting with kernel. Report speed in identify command, same as done by inquiry.
* Switch the default WARNS level for sbin/ to 6.ru2009-10-191-2/+0
| | | | Submitted by: Ulrich Spörlein
* Fethch more information from IDENTIFY result.mav2009-09-271-15/+48
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* MFp4:mav2009-09-221-12/+11
| | | | Reduce code duplication.
* Add to `camcontrol cmd` support for sending arbitrary ATA commands.mav2009-09-042-52/+141
| | | | | | It could be used for broad range of tasks, such as configuring drive power management modes, caching, security and any other features and tasks, not supported by existing drivers.
* Short ATA command format has 28bit address, not 36bit.mav2009-08-301-2/+2
| | | | | | Rename ata_36bit_cmd() into ata_28bit_cmd(), while it didn't become legacy. MFC after: 2 days
* MFp4:mav2009-08-301-27/+120
| | | | | | | - Tune protocol version reporting, - Add supported DMA/PIO modes reporting. - Fix IDENTIFY for ATAPI devices. - Remove confusing "-" for NCQ status.
* Fix alignment issue with ATA IDENTIFY structure.scottl2009-07-101-11/+11
| | | | Approved by: re
* Separate the parallel scsi knowledge out of the core of the XPT, andscottl2009-07-102-6/+263
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | modularize it so that new transports can be created. Add a transport for SATA Add a periph+protocol layer for ATA Add a driver for AHCI-compliant hardware. Add a maxio field to CAM so that drivers can advertise their max I/O capability. Modify various drivers so that they are insulated from the value of MAXPHYS. The new ATA/SATA code supports AHCI-compliant hardware, and will override the classic ATA driver if it is loaded as a module at boot time or compiled into the kernel. The stack now support NCQ (tagged queueing) for increased performance on modern SATA drives. It also supports port multipliers. ATA drives are accessed via 'ada' device nodes. ATAPI drives are accessed via 'cd' device nodes. They can all be enumerated and manipulated via camcontrol, just like SCSI drives. SCSI commands are not translated to their ATA equivalents; ATA native commands are used throughout the entire stack, including camcontrol. See the camcontrol manpage for further details. Testing this code may require that you update your fstab, and possibly modify your BIOS to enable AHCI functionality, if available. This code is very experimental at the moment. The userland ABI/API has changed, so applications will need to be recompiled. It may change further in the near future. The 'ada' device name may also change as more infrastructure is completed in this project. The goal is to eventually put all CAM busses and devices until newbus, allowing for interesting topology and management options. Few functional changes will be seen with existing SCSI/SAS/FC drivers, though the userland ABI has still changed. In the future, transports specific modules for SAS and FC may appear in order to better support the topologies and capabilities of these technologies. The modularization of CAM and the addition of the ATA/SATA modules is meant to break CAM out of the mold of being specific to SCSI, letting it grow to be a framework for arbitrary transports and protocols. It also allows drivers to be written to support discrete hardware without jeopardizing the stability of non-related hardware. While only an AHCI driver is provided now, a Silicon Image driver is also in the works. Drivers for ICH1-4, ICH5-6, PIIX, classic IDE, and any other hardware is possible and encouraged. Help with new transports is also encouraged. Submitted by: scottl, mav Approved by: re
* Add SCSI READ CAPACITY support to camcontrol. The new 'readcap' subcommandken2007-09-083-5/+283
| | | | | | | | | | | | will automatically issue the 16 byte verison of read capacity if the device in question is larger than 2TB. There are also a number of output options here (last block, number of blocks, human readable) that should meet most needs, and also aid in scripting. Approved by: re (bmah) MFC after: 1 week
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