Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r302957: Fix NCQ TRIM emulation.

When this code was written, there was no guests using it to test.

Approved by: re (kib)

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Fix gcc warnings

Put cfl/prdt under AHCI_DEBUG #defines as they are only used in
those cases.

Approved by: re (gjb)
Differential Revision: https://reviews.freebsd.org/D7119
MFC after: 1 week
Reported by: Jenkins
Reviewed by: grehan (maintainer)
Sponsored by: EMC / Isilon Storage Division

Use MIN()/MAX() macros from sys/param.h.

Reviewed by: grehan
Differential Revision: https://reviews.freebsd.org/D6054

bhyve: Remove unneeded variable ncq.

ncq was not being inititialized properly but it was not actually
necessary either, so make the code smaller by removing it.

CID: 1248842
Reviewed by: grehan

Cleanup unused-but-set-variable spotted by gcc-4.9.

Reviewed by: neel
Approved by: rodrigc (mentor)
Differential Revision: https://reviews.freebsd.org/D5042

Clean up some harmless unimplemented-command warning messages.

- Don't advertize trusted-computing capability in the Identify page.
This prevents Windows from issuing a TRUSTED_RECEIVE_DMA command.
- Windows will send down SMART and SECURITY_FREEZE_LOCK
even though smart and security capabilities were not advertized.
Send back a silent abort.

Reviewed by: mav

Add simple (no-op) emulations for the CHECK_POWER_MODE,
READ_VERIFY and READ_VERIFY_EXT commands.

Reviewed by: mav

Allow byte reads of AHCI registers.

This is needed to support Windows guests that use byte reads to access certain
AHCI registers (e.g. PxTFD.Status and PxTFD.Error).

Reviewed by: grehan, mav
Reported by: Leon Dang (ldang@nahannisys.com)
Differential Revision: https://reviews.freebsd.org/D2469
MFC after: 2 weeks

Reimplement queue freeze on error, added in r282429:

It is not required to use CLO to recover from task file error, it should
be enough to do only stop/start, that does not clear the PxTFD.STS.ERR.

MFC after: 13 days

Implement in-order execution of non-NCQ commands.

Using status updates in r282364, block queue on BSY, DRQ or ERR bits set.
This can be a performance penalization for non-NCQ commands, but it is
required for proper error recovery and standard compliance.

MFC after: 2 weeks

Implement basic PxTFD.STS.BSY reporting.

MFC after: 2 weeks

Initialize PxCMD on reset and make its read-only bits such.

MFC after: 2 weeks

Handle ATA_SEND_FPDMA_QUEUED as NCQ in ahci_port_stop().

MFC after: 1 week

Don't set bits that should be zero for SATA devices.

Old value made Linux think that it is PATA device with SATA bridge.

MFC after: 2 weeks

Workaround bhyve virtual disks operation on top of GEOM providers.

GEOM does not support scatter/gather lists in its I/Os. Such requests
are cut in pieces by physio(), that may be problematic, if those pieces
are not multiple of provider's sector size. If such case is detected,
move the data through temporary sequential buffer.

MFC after: 2 weeks

Make virtual AHCI more careful with I/O lengths.

MFC after: 2 weeks

Add missing variable initialization.

Reported by: Coverity
CID: 1288938
MFC after: 3 days

Give AHCI disk serial based on backing file path same as for virtio block.

It is still not good that they may intersect on different hosts, but that
is better then intersecting on the same host.

MFC after: 2 weeks

Block delete capability for read-only devices.

Submitted by: neel
MFC after: 2 weeks

Add checksums to identify data and NCQ command error log.

MFC after: 2 weeks

Slightly polish virtual AHCI CD reporting.

MFC after: 2 weeks

Fix NOP and IDLE commands for virtual AHCI disks.

MFC after: 2 weeks

Add support for NCQ variant of DSM TRIM for virtual AHCI disks.

The code is not really tested yet due to lack of initiator support.

Requested by: imp
MFC after: 2 weeks

Improve NCQ errors reporting for virtual AHCI disks.

While this implementation is still not perfect, previous was just broken.

MFC after: 2 weeks

Remove incorrect SERR register setting.

At this point we have nothing to report through that register.

MFC after: 2 weeks

Change prdbc value reporting.

MFC after: 2 weeks

Polish AHCI disk identify data and fix speed negotiation.

MFC after: 2 weeks

Add support for PIO variants of READ/WRITE commands for AHCI disks.

AHCI API hides all PIO specifics, so this functionality is almost free.

MFC after: 2 weeks

Use ahci_write_fis_d2h() for commands completion.

MFC after: 2 weeks

Add DSM TRIM command support for virtual AHCI disks.

It works only for virtual disks backed by ZVOLs and raw devices supporting
BIO_DELETE. Virtual disks backed by files won't report this capability.

MFC after: 2 weeks
Relnotes: yes

Report logical/physical sector sizes for virtual SATA disk.

MFC after: 2 weeks

Don't close a block context if it couldn't be opened,
for example if the backing file doesn't exist,
avoiding a null deref.

Reviewed by: neel
MFC after: 1 week.

If the start bit, PxCMD.ST, is cleared and nothing is in-flight then
PxCI, PxSACT, PxCMD.CCS and PxCMD.CR should be 0.

Reviewed by: grehan

Support stopping and restarting the AHCI command list via toggling
PxCMD.ST from '1' to '0' and back. This allows the driver a chance to
recover if for instance a timeout occurred due to activity on the
host.

Reviewed by: grehan

Commands which encounter a fatal error shouldn't be marked as completed.
Furthermore, provide an indication of the current command so it can be
determined which one actually failed.

Reviewed by: grehan

Use the blockif CHS routine to create fake CHS values,
and then populate them in the identity page.

This fixes a divide-by-zero error at probe time with NetBSD.

MFC after: 1 week.

Implement legacy interrupts for the AHCI device emulation
according to the method outlined in the AHCI spec.

Tested with FreeBSD 9/10/11 with MSI disabled,
and also NetBSD/amd64 (lightly).

Reviewed by: neel, tychon
MFC after: 3 weeks

Use calloc() in favor of malloc + memset.

Reviewed by: neel

Constrain the amount of data returned to what is actually available
not the size of the buffer.

Approved by: grehan (co-mentor)

Don't reissue in-flight commands.

Approved by: neel (co-mentor)

Though there currently isn't a way to insert new media into an ATAPI
drive, at least pretend to support Asynchronous Notification (AN) to
avoid a guest needlessly polling for it.

Approved by: grehan (co-mentor)

Provide an indication a "PIO Setup Device to Host FIS" occurred while executing
the IDENTIFY DEVICE and IDENTIFY PACKET DEVICE commands.

Also, provide an indication a "D2H Register FIS" occurred during a SET FEATURES
command.

Approved by: grehan (co-mentor)

Fix issue with stale fields from a recycled request pulled off the freelist.

Approved by: grehan (co-mentor)

The Data Byte Count (DBC) field of a Physical Region Descriptor
Table is 22 bits, with the bit 31 being the interrupt-on-completion
bit.

OpenBSD and UEFI set this bit, resulting in large block i/o lengths
being sent to bhyve and coredumping the process. Fix by masking off
the relevant 22 bits when using the DBC field as a length.

Reviewed by: Zhixiang Yu
Discussed with: Tycho Nightingale (tycho.nightingale@pluribusnetworks.com)
MFC after: 10.0

Add the VM name to the process name with setproctitle().
Remove the VM name from some of the thread-naming calls
since it is now in the proc title.
Slightly modify the thread-naming for the net and block
threads.

This improves readability when using top/ps with the -a
and -H options on a system with a large number of bhyve VMs.

Requested by: Michael Dexter
Reviewed by: neel
MFC after: 4 weeks

Fix AHCI ATAPI emulation when backed with /dev/cd0

- remove assumption that the backing file/device had
512-byte sectors
- fix incorrect iovec size variable that would result
in a buffer overrun when an o/s issued an i/o request
with more s/g elements than the blockif api

Reviewed by: Zhixiang Yu (zxyu.core@gmail.com)
MFC after: 3 days

Eliminate unconditional debug printfs.

Linux writes to these nominally read-only registers,
so avoid having bhyve write warning messages to stdout
when the reg writes can be safely ignored. Change the
WPRINTF to DPRINTF which is conditional.

Reviewed by: mav
Discussed with: mav, Zhixiang Yu
MFC after: 3 days

In usr.sbin/bhyve/pci_ahci.c, fix several gcc warnings of the form
"assignment makes pointer from integer without a cast", by changing the
cmd_lst and rbis members of struct ahci_port from integers to pointers.

Also surround a pow-of-2 test expression with parentheses to clarify it,
and avoid another gcc warning.

Approved by: re (glebius)
Reviewed by: grehan, mav

Import Zhixiang Yu's GSoC'13 AHCI emulation:
https://wiki.freebsd.org/SummerOfCode2013/bhyveAHCI

This provides ICH8 SATA disk and ATAPI ports, selectable
via the bhyve slot command-line parameter:

SATA
-s <slot>,ahci-hd,<image-file>

ATAPI
-s <slot>,ahci-cd,<image-file>

Slight modifications by: grehan@
Approved by: re@ (blanket)
Obtained from: FreeBSD GSoC'13