in_cksum.h required ip.h to be included for struct ip. To be
able to use some general checksum functions like in_addword()
in a non-IPv4 context, limit the (also exported to user space)
IPv4 specific functions to the times, when the ip.h header is
present and IPVERSION is defined (to 4).
We should consider more general checksum (updating) functions
to also allow easier incremental checksum updates in the L3/4
stack and firewalls, as well as ponder further requirements by
certain NIC drivers needing slightly different pseudo values
in offloading cases. Thinking in terms of a better "library".
Sponsored by: The FreeBSD Foundation
Sponsored by: iXsystems
Reviewed by: gnn (as part of the whole)
MFC After: 3 days
1. Define all registers. These definitions are needed to support
the FCM driver for direct-connect NAND.
2. Repurpose lbc_read_reg() and lbc_write_reg() for use by localbus
attached device drivers. Use bus_space functions directly in the
lbc driver itself.
3. Be smarter about programming LAWs and mapping memory. The ranges
defined in the FDT are per bank (= chip select) and since we can
have up to 8 banks, we could easily use more than 8 LAWs or TLB
enrties when per-bank memory ranges need multiple LAWs or TLBs
due to alignment or size constraints.
We now combine all memory ranges into the fewest possible set of
contiguous regions and program the hardware for that. Thus, a
cleverly written FDT with 8 devices may still only need 1 LAW or
1 TLB entry. Note that the memory ranges can be assigned randomly
to the banks. We sort as we build to handle that.
4. Support the FCM when programming the OR register. This is mostly
for documention purposes as we do not have a way to define the
mode for a bank.
5. Remove Semihalf-ism: do not define DEBUG (only to undefine it
again).
FDT does not define all ranges possible for a particular node (e.g.
PCI).
While here, only update the trgt_mem and trgt_io pointers if there's
no error. This avoids that we knowingly write an invalid target (= -1).
for variables that live in the boot page.
o Add bp_trace (yes, it's in the boot page) that gets zeroed before we
try to wake a core and to which the core being woken can write markers
so that we know where the core was in case it doesn't wake up. The
boot code does not yet write markers (too follow).
o Disable the boot page translation to allow the last 4K page to be used
for whatever we please. It would get mapped otherwise.
o Fix kernstart in the case of SMP. The start argument is typically page
aligned due to the alignment requirements that come with having a boot
page. The point of using trunc_page is that we get the actual load
address given that the entry point is immediately following the ELF
headers. In the SMP case this ended up exactly 4K after the load
address. Hence subtracting 1 from start.
exceptions early enough during boot that the kernel will do ithe same.
Use lwsync only when compiling for LP64 and revert to the more proven isync
when compiling for ILP32. Note that in the end (i.e. between revision 222198
and this change) ILP32 changed from using sync to using isync. As per Nathan
the isync is needed to make sure I/O accesses are properly serialized with
locks and isync tends to be more effecient than sync.
While here, undefine __ATOMIC_ACQ and __ATOMIC_REL at the end of the file
so as not to leak their definitions.
Discussed with: nwhitehorn
Introduce a (for now copied stripped down) in6_cksum_pseudo()
function. We should be able to use this from in6_cksum() but
we should also ponder possible MD specific improvements.
It takes an extra csum argument to allow for easy checks as
will be done by the upper layer protocol input paths.
Sponsored by: The FreeBSD Foundation
Sponsored by: iXsystems
Reviewed by: gnn (as part of the whole)
MFC After: 3 days
Optimize in6_cksum(), re-ordering work and limiting variable
initialization, removing a bzero() for mostly re-initialized
struct values, making use of the newly introduced in6_getscope(),
as well as converting an if/panic to a KASSERT().
Sponsored by: The FreeBSD Foundation
Sponsored by: iXsystems
Reviewed by: gnn (as part of the whole)
MFC After: 3 days
Without it, it fails to create labels for filesystems resized by
growfs(8).
PR: kern/165962
Submitted by: Olivier Cochard-Labbe <olivier at cochard dot me>
Introduce in6_getscope() to allow more effective checksum
computations without the need to copy the address to clear the
scope.
Sponsored by: The FreeBSD Foundation
Sponsored by: iXsystems
Reviewed by: gnn (as part of the whole)
MFC After: 3 days
With the changes over the past year to how accesses to the page's dirty
field are synchronized, there is no need for pmap_protect() to acquire
the page queues lock unless it is going to access the pv lists or
PMAP1/PADDR1.
Style fix to pmap_protect().
Revamp the CAM enclosure services driver.
This updated driver uses an in-kernel daemon to track state changes and
publishes physical path location information\for disk elements into the
CAM device database.
Sponsored by: Spectra Logic Corporation
Sponsored by: iXsystems, Inc.
Submitted by: gibbs, will, mav
- Add low-level support for SATA Enclosure Management Bridge (SEMB)
devices -- SATA equivalents of the SCSI SES/SAF-TE devices.
- Add some utility functions for SCSI SAF-TE devices access.
Sponsored by: iXsystems, Inc.
low memory situation. I've observed a situation where per-CPU
allocations were disabled while there were enough free cached pages.
Basically, cnt.v_free_count was sitting stable at a value lower
than cnt.v_free_min and that caused massive performance drop.
Reviewed by: alc
MFC after: 1 week
processor objects. Instead of forcing the new-bus CPU objects to use
a unit number equal to pc_cpuid, adjust acpi_pcpu_get_id() to honor the
MADT IDs by default. As with the previous change, setting
debug.acpi.cpu_unordered to 1 in the loader will revert to the old
behavior.
Tested by: jimharris
MFC after: 1 month
and deactivating PCI resources. Previously, if a device had more than
48 MSI interrupts, then activating message 48 (which has a rid == PCIR_BIOS)
would incorrectly try to enable the PCI ROM BAR.
Tested by: Olivier Cinquin ocinquin uci edu
MFC after: 3 days
negotiate with each other on the TLP payload size so blindly
forcing the size to 128 can cause a completion error which in turn
will stop device.
Reported by: Geans Pin < geanspin <> broadcom dot com >
MFC after: 5 days
configured down. Formerly, IPMI communication was lost whenever the
interface was not up. The reason was that the BCE_EMAC_MODE
register was not configured with the correct media settings. There
are two parts to the fix.
First, resetting the chip in bce_reset() causes the BCE_EMAC_MODE
register to be initialized to a default value that does not
necessarily correspond to the actual media settings. The fix
implemented here is a bit of a hack. Ideally, at the end of
bce_reset() we would poll the PHY to determine the negotiated media,
and then we would set the BCE_EMAC_MODE register accordingly. That
is difficult, since the PHY is abstracted behind the MII layer and is
not supposed to be queried directly from the MAC driver. Instead,
we read the BCE_EMAC_MODE register at the beginning of bce_reset()
and then restore its media bits to their original values before
returning. If IPMI is up and running, then the link is already
established and the BCE_EMAC_MODE register is already set appropriately
when bce_reset() is called. If IPMI is not running, no harm is
done by preserving the BCE_EMAC_MODE settings. The driver will set
the register properly once the interface is configured up and link
is established.
Second, bce_miibus_statchg() is sometimes called when the link is
down. In that case, the reported media settings are invalid.
Formerly, the driver used them anyway to setup the BCE_EMAC_MODE
register. We now avoid changing any MAC registers unless link is
active and the reported media settings are valid.
Submitted by: jdp
Tested by: jdp
MFC after: 5 days
I'll have to leave this high for now, until I've done some significant
surgery with how ath_bufs (and descriptors) are handled.
This should significantly cut down on the opportunities for a full TX
queue hanging traffic. I'll continue making things work though; I'm
mostly doing this for users. :)
