Commit Graph

31 Commits

Author SHA1 Message Date
Marius Strobl
b63eeef41f scc(4)/uart(4): Remove obsolete support for Siemens SAB 82532
It's no longer used since 58aa35d429
and r357455 respectively.
2020-12-26 13:48:06 +01:00
Brandon Bergren
a4ec123c56 [PowerPC] Fix scc z8530 driver
Parts of the z8530 driver were still using the SUN channel spacing.

This was invalid on PowerMac and QEMU, where the attachment was to escc,
not escc-legacy. This means the driver has apparently NEVER worked properly
on Macintosh hardware.

Add documentation for the channel spacing details, and change to using
driver-specific initialization instead of hardcoded spacing so either
spacing can be used.

Fixes boot hang in QEMU when using the serial console, and fixes use on
Xserve serial (and presumably PowerMacs that have a Stealth Serial port
or similar)

Reviewed by:	jhibbits
Sponsored by:	Tag1 Consulting, Inc.
Differential Revision:	https://reviews.freebsd.org/D24661
2020-06-14 16:47:16 +00:00
Warner Losh
58aa35d429 Remove sparc64 kernel support
Remove all sparc64 specific files
Remove all sparc64 ifdefs
Removee indireeect sparc64 ifdefs
2020-02-03 17:35:11 +00:00
Conrad Meyer
e2e050c8ef Extract eventfilter declarations to sys/_eventfilter.h
This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h"
in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces header
pollution substantially.

EVENTHANDLER_DECLARE and EVENTHANDLER_LIST_DECLAREs were moved out of .c
files into appropriate headers (e.g., sys/proc.h, powernv/opal.h).

As a side effect of reduced header pollution, many .c files and headers no
longer contain needed definitions.  The remainder of the patch addresses
adding appropriate includes to fix those files.

LOCK_DEBUG and LOCK_FILE_LINE_ARG are moved to sys/_lock.h, as required by
sys/mutex.h since r326106 (but silently protected by header pollution prior
to this change).

No functional change (intended).  Of course, any out of tree modules that
relied on header pollution for sys/eventhandler.h, sys/lock.h, or
sys/mutex.h inclusion need to be fixed.  __FreeBSD_version has been bumped.
2019-05-20 00:38:23 +00:00
Pedro F. Giffuni
718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00
Justin Hibbits
82ed3cb0e4 Replace some more default range checks with RMAN_IS_DEFAULT_RANGE().
This is a follow-on to r295832.
2016-03-02 03:26:56 +00:00
Justin Hibbits
c47476d7e6 Migrate many bus_alloc_resource() calls to bus_alloc_resource_anywhere().
Most calls to bus_alloc_resource() use "anywhere" as the range, with a given
count.  Migrate these to use the new bus_alloc_resource_anywhere() API.

Reviewed by:	jhb
Differential Revision:	https://reviews.freebsd.org/D5370
2016-02-27 03:38:01 +00:00
Justin Hibbits
2dd1bdf183 Convert rman to use rman_res_t instead of u_long
Summary:
Migrate to using the semi-opaque type rman_res_t to specify rman resources.  For
now, this is still compatible with u_long.

This is step one in migrating rman to use uintmax_t for resources instead of
u_long.

Going forward, this could feasibly be used to specify architecture-specific
definitions of resource ranges, rather than baking a specific integer type into
the API.

This change has been broken out to facilitate MFC'ing drivers back to 10 without
breaking ABI.

Reviewed By: jhb
Sponsored by:	Alex Perez/Inertial Computing
Differential Revision: https://reviews.freebsd.org/D5075
2016-01-27 02:23:54 +00:00
Dimitry Andric
6ba26efcb5 In sys/dev/scc, remove unused static function scc_setmreg(). While
here, invoke scc_getmreg() in two more places where it can be used.

Reviewed by:	marcel
MFC after:	3 days
2013-12-29 20:23:08 +00:00
Marius Strobl
eb84fc9506 Make r253899 compile. 2013-08-03 21:24:52 +00:00
Marius Strobl
1e53269ac2 Const'ify scc_driver_name. 2013-08-02 23:31:51 +00:00
Marius Strobl
71bda3eb9a - Use NULL instead of 0 for pointers.
- Remove unnecessary __RMAN_RESOURCE_VISIBLE.
2013-08-02 23:30:32 +00:00
Marius Strobl
c4b1deaf0d - Implement iclear methods for QUICC and SAB 82532. With r253161 in place,
this is is crucial at least for the latter.
  What happens is that attaching uart(4) to scc(4) causes the SAB 82532 to
  "receive" something and trigger a SER_INT_RXREADY interrupt, given that
  at least fast/filter interrupts are already enabled. Prior to r253161,
  uart_bus_ihand() was set up at this point and handled that condition,
  i. e. read the RX FIFO and issued a Receive Message Complete.
  Now, uart_bus_ihand() and uart_intr() are setup after attaching uart(4),
  leaving the SER_INT_RXREADY interrupt triggered during the latter to
  be handled by the iclear method. However, with that method not implement,
  this in turn causes SAB 82532 to not issue any further SER_INT_RXREADY
  interrupts until the RX FIFO is full again. Thus, 15 received bytes go
  to nowhere, given that "the other half" of the RX FIFO is used for status
  information. Hence, implementing sab82532_bfe_iclear() fixes things again.
  Potentially, the same problem exists for QUICC.
- Remove unnecessary __RMAN_RESOURCE_VISIBLE.
- Remove a superfluous header.
- Use KOBJMETHOD_END.
- Mark unused arguments as such.
- Remove variables unused after initialization.

Reviewed by:	marcel (earlier version)
2013-08-02 23:28:49 +00:00
Marius Strobl
4b7ec27007 - There's no need to overwrite the default device method with the default
one. Interestingly, these are actually the default for quite some time
  (bus_generic_driver_added(9) since r52045 and bus_generic_print_child(9)
  since r52045) but even recently added device drivers do this unnecessarily.
  Discussed with: jhb, marcel
- While at it, use DEVMETHOD_END.
  Discussed with: jhb
- Also while at it, use __FBSDID.
2011-11-22 21:28:20 +00:00
Ed Schouten
d745c852be Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.
This means that their use is restricted to a single C file.
2011-11-07 06:44:47 +00:00
Marius Strobl
c71dacd168 Recognize the SAB 82532 found in Fujitsu PRIMEPOWER650 and 900. 2011-05-15 13:27:38 +00:00
Warner Losh
005f7c3308 Make iclear return int, since that matches all function definitions of it. 2009-02-05 19:32:34 +00:00
Marcel Moolenaar
6239f9e5f1 With rev 1.24 of sys/powerpc/powermac/macio.c, we now get a
total of 6 interrupt resources for scc(4) on macio(4). This
is 3 per channel, of which the 1st of each channel is the
interrupt associated with the SCC. The other 2 are for DMA
operation.
Change scc_bfe_attach() to accept an argument that's the
number of interrupts per channel (ipc) and change each bus
front-end (bfe) to pass that argument through a wrapper
for the device_attach method.

For now, we only allocate the 1st interrupt of each channel
to perserve behaviour.
2008-04-26 18:40:59 +00:00
Rafal Jaworowski
e1ef781113 Support for Freescale QUad Integrated Communications Controller.
The QUICC engine is found on various Freescale parts including MPC85xx, and
provides multiple generic time-division serial channel resources, which are in
turn muxed/demuxed by the Serial Communications Controller (SCC).

Along with core QUICC/SCC functionality a uart(4)-compliant device driver is
provided which allows for serial ports over QUICC/SCC.

Approved by:	cognet (mentor)
Obtained from:	Juniper
MFp4:		e500
2008-03-03 18:20:17 +00:00
Marcel Moolenaar
f1aad6d9b2 Add method enabled() to the SCC interface. This method can be used
by driver backends to mark individual channels as enabled or not.
The default implementation of this method always mark channels as
enabled.
This method is currently not used, but is added with the PowerQUICC
in mind where the 2nd SCC channel can be disabled.
2007-03-28 18:05:17 +00:00
Marcel Moolenaar
abb3d233c4 Allow the range of a SCC class to be 0. This gives all child
devices the same (overlapping) I/O range. This is useful for
embedded communications controllers like the CPM of various
models of the PowerQUICC.
2007-03-28 06:45:33 +00:00
Marcel Moolenaar
cad72a80bd Pass the RID from the bus frontends to the core probe function.
Currently all RIDs are 0, but for PCI devices this typically
isn't the case. This change is made with future PCI support in
mind.
2007-03-22 23:45:25 +00:00
Paolo Pisati
ef544f6312 o break newbus api: add a new argument of type driver_filter_t to
bus_setup_intr()

o add an int return code to all fast handlers

o retire INTR_FAST/IH_FAST

For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current

Reviewed by: many
Approved by: re@
2007-02-23 12:19:07 +00:00
Marcel Moolenaar
cbd038e738 Fix braino: The cl_range field should not hold the shifted I/O
space range per channel, but rather the unshifted range. The
shifting depends on the bus. The hardcoded shift was specific
to the SBus on sparc64. The shifted range is now determined at
run-time. This fixes the mac-io attachment.
2006-07-26 03:10:01 +00:00
Marcel Moolenaar
c074ebba10 Revert previous commit. Spinlocks hold interrupts disabled, so
preemption is not possible.

Pointed out by: jhb@
2006-07-25 00:23:54 +00:00
Marcel Moolenaar
8f3b6a62b5 If we have multiple interrupt resources, like for Z8530 clones on the
mac-io bus, we cannot setup FAST interrupt handlers. This because we
use spinlocks to protect the hardware and all interrupt resources are
assigned the same interrupt handler. When the interrupt handler is
invoked for interrupt X, it could be preempted for interrupt Y while
it was holding the lock (where X and Y are the interrupt resources
corresponding a single instance of this driver). This is a deadlock.
By only using a MPSAFE handler in that case we prevent preemption.
2006-07-24 22:25:16 +00:00
Marcel Moolenaar
9cd8d259f0 The Z8530 on the MacIO has an interrupt per channel. Deal with this
by having interrupt resource variables per channel. We don't set up
different interrupt handlers per channel, though.
2006-04-04 17:33:08 +00:00
Marcel Moolenaar
ffc08b2147 Add a MacIO bus attachment. The Z8530 as present in the Mac needs
a different register shift and is fed by a different clock than
we use for UltraSPARC hardware. To deal with this, the regshft and
rclk fields in the class structure are removed and bus frontends
now pass the right regshft and rclk to the probe function where
they're put in the BAS and passed in to subordinate drivers.
2006-04-01 04:51:56 +00:00
Marcel Moolenaar
19ef0b1184 Fix cut-n-paste braino in previous commit: s/puc/scc/g
Pointy hat: marcel@
2006-03-31 21:55:53 +00:00
Marcel Moolenaar
1b0c333020 Add a DRIVER_MODULE declaration for fhc(4) as this attachement is
also used for the FHC bus.

Pointed out by: marius@
2006-03-31 17:39:49 +00:00
Marcel Moolenaar
6174e6ed12 Add scc(4), a driver for serial communications controllers. These
controllers typically have multiple channels and support a number
of serial communications protocols. The scc(4) driver is itself
an umbrella driver that delegates the control over each channel
and mode to a subordinate driver (like uart(4)).
The scc(4) driver supports the Siemens SAB 82532 and the Zilog
Z8530 and replaces puc(4) for these devices.
2006-03-30 18:33:22 +00:00