Commit Graph

13 Commits

Author SHA1 Message Date
Scott Long
332e6e31c2 Fix syntax error from r357647. Adjust a variable name to make the use more
clear.

Reported by:	dim
2020-02-17 20:12:34 +00:00
Scott Long
d176b8039e Ever since the block layer expanded its command syntax beyond just
BIO_READ and BIO_WRITE, we've handled this expanded syntax poorly in
drivers when the driver doesn't support a particular command.  Do a
sweep and fix that.

Reported by:	imp
2020-02-07 09:22:08 +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
Ian Lepore
add35ed5b8 Follow r261352 by updating all drivers which are children of simplebus
to check the status property in their probe routines.

Simplebus used to only instantiate its children whose status="okay"
but that was improper behavior, fixed in r261352.  Now that it doesn't
check anymore and probes all its children; the children all have to
do the check because really only the children know how to properly
interpret their status property strings.

Right now all existing drivers only understand "okay" versus something-
that's-not-okay, so they all use the new ofw_bus_status_okay() helper.
2014-02-02 19:17:28 +00:00
Nathan Whitehorn
ccc1cefe83 These nexus attachments do not execute a real probe and so need
BUS_PROBE_NOWILDCARD set.
2013-10-29 13:48:41 +00:00
Brooks Davis
e908804339 MFP4 (driver change only):
Change 231100 by brooks@brooks_zenith on 2013/07/12 21:01:31

	Add a new option ALTERA_SDCARD_FAST_SIM which checks immediatly
	for success of I/O operations rather than queuing a task.

MFC after:	3 days
Sponsored by:	DARPA/AFRL
2013-10-18 15:27:11 +00:00
Brooks Davis
1818891c93 MFP4:
Change 227594 by brooks@brooks_zenith on 2013/04/11 17:10:14

	When we fail, print the error that occured if we are giving
	up or if bootverbose is set.

MFC after:	3 days
Sponsored by:	DARPA/AFRL
2013-10-18 15:24:18 +00:00
Brooks Davis
6f1efb0f4b MFP4 change 219820
Add a missing 0 to the mask for byte0 of C_SIZE.

The previous mask (0xc) worked except that the last 0-1536K of the disk
could not be accessed since we were shifting the (wrong) bits we did
mask off the right edge.
2013-01-22 18:51:14 +00:00
Brooks Davis
9f9f029919 MFP4 change 219819
Remove a duplicate computation of C_SIZE_MULT.  Once is sufficient.

Sponsored by:	DARPA, AFRL
2013-01-22 18:48:45 +00:00
Robert Watson
6a347d023b Merge Perforce changeset 219952 to head:
Make different bus attachments for Altera and Terasice
  device drivers share the same devclass_t.

Sponsored by:	DARPA, AFRL
2013-01-13 16:57:11 +00:00
Robert Watson
180ee20c4e Merge Perforce changeset 219927 to head:
Implement an FDT attachment for the Altera SD Card driver

Sponsored by:	DARPA, AFRL
2013-01-13 15:15:24 +00:00
Robert Watson
3cae0c3353 Merge Perforce changeset 219926 to head:
Copy Altera SDCard nexus attachment as a starting point for the FDT
  attachment.

Sponsored by:	DARPA, AFRL
2013-01-13 15:13:25 +00:00
Robert Watson
d432e92a84 Add a device driver for the Altera University Program SD Card IP Core,
which can be synthesised in Altera FPGAs.  An altera_sdcardc device
probes during the boot, and /dev/altera_sdcard devices come and go as
inserted and removed.  The device driver attaches directly to the
Nexus, as is common for system-on-chip device drivers.

This IP core suffers a number of significant limitations, including a
lack of interrupt-driven I/O -- we must implement timer-driven polling,
only CSD 0 cards (up to 2G) are supported, there are serious memory
access issues that require the driver to verify writes to memory-mapped
buffers, undocumented alignment requirements, and erroneous error
returns.  The driver must therefore work quite hard, despite a fairly
simple hardware-software interface.  The IP core also supports at most
one outstanding I/O at a time, so is not a speed demon.

However, with the above workarounds, and subject to performance
problems, it works quite reliably in practice, and we can use it for
read-write mounts of root file systems, etc.

Sponsored by:	DARPA, AFRL
2012-08-25 11:19:20 +00:00