litmus-rt.git - The LITMUS^RT kernel.

Branch	Commit message	Author	Age
archive/unc-master-3.0	P-FP: fix BUG_ON releated to priority inheritance	Bjoern Brandenburg	13 years
archived-2013.1	uncachedev: mmap memory that is not cached by CPUs	Glenn Elliott	12 years
archived-private-master	Merge branch 'wip-2.6.34' into old-private-master	Andrea Bastoni	15 years
archived-semi-part	Merge branch 'wip-semi-part' of ssh://cvs/cvs/proj/litmus/repo/litmus2010 int...	Andrea Bastoni	15 years
demo	Further refinements	Jonathan Herman	14 years
ecrts-pgm-final	Merge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...	Glenn Elliott	12 years
ecrts14-pgm-final	Merge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...	Glenn Elliott	12 years
gpusync-rtss12	Final GPUSync implementation.	Glenn Elliott	12 years
gpusync/staging	Rename IKGLP R2DGLP.	Glenn Elliott	12 years
linux-tip	Merge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/p...	Linus Torvalds	15 years
litmus2008-patch-series	add i386 feather-trace implementation	Bjoern B. Brandenburg	16 years
master	PSN-EDF: use inferred_sporadic_job_release_at	Bjoern Brandenburg	9 years
pgm	make it compile	Glenn Elliott	12 years
prop/litmus-signals	Infrastructure for Litmus signals.	Glenn Elliott	13 years
prop/robust-tie-break	Fixed bug in edf_higher_prio().	Glenn Elliott	13 years
staging	Fix tracepoint compilation error	Felipe Cerqueira	13 years
test	9/23/2016	Namhoon Kim	9 years
tracing-devel	Test kernel tracing events capabilities	Andrea Bastoni	16 years
v2.6.34-with-arm-patches	smsc911x: Add spinlocks around registers access	Catalin Marinas	15 years
v2015.1	Add ARM syscall def for get_current_budget	Bjoern Brandenburg	10 years
wip-2011.2-bbb	Litmus core: simplify np-section protocol	Bjoern B. Brandenburg	14 years
wip-2011.2-bbb-trace	Refactor sched_trace_log_message() -> debug_trace_log_message()	Andrea Bastoni	14 years
wip-2012.3-gpu	SOBLIV draining support for C-EDF.	Glenn Elliott	12 years
wip-2012.3-gpu-preport	pick up last C-RM file	Glenn Elliott	12 years
wip-2012.3-gpu-rtss13	Fix critical bug in GPU tracker.	Glenn Elliott	12 years
wip-2012.3-gpu-sobliv-budget-w-kshark	Proper sobliv draining and many bug fixes.	Glenn Elliott	12 years
wip-aedzl-final	Make it easier to compile AEDZL interfaces in liblitmus.	Glenn Elliott	15 years
wip-aedzl-revised	Add sched_trace data for Apative EDZL	Glenn Elliott	15 years
wip-arbit-deadline	Fix compilation bug.	Glenn Elliott	13 years
wip-aux-tasks	Description of refined aux task inheritance.	Glenn Elliott	13 years
wip-bbb	GSN-EDF & Core: improve debug TRACE'ing for NP sections	Bjoern B. Brandenburg	14 years
wip-bbb-prio-don	use correct timestamp	Bjoern B. Brandenburg	14 years
wip-better-break	Implement hash-based EDF tie-breaking.	Glenn Elliott	13 years
wip-binary-heap	Make C-EDF work with simplified binheap_delete	Glenn Elliott	13 years
wip-budget	Added support for choices in budget policy enforcement.	Glenn Elliott	15 years
wip-color	Summarize schedulability with final record	Jonathan Herman	13 years
wip-color-jlh	sched_color: Fixed two bugs causing crashing on experiment restart and a rare...	Jonathan Herman	13 years
wip-d10-hz1000	Enable HZ=1000 on District 10	Bjoern B. Brandenburg	15 years
wip-default-clustering	Feature: Make default C-EDF clustering compile-time configurable.	Glenn Elliott	15 years
wip-dissipation-jerickso	Update from 2.6.36 to 2.6.36.4	Jeremy Erickson	11 years
wip-dissipation2-jerickso	Update 2.6.36 to 2.6.36.4	Jeremy Erickson	11 years
wip-ecrts14-pgm	Merge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...	Glenn Elliott	12 years
wip-edf-hsb	last tested version	Jonathan Herman	14 years
wip-edf-os	Lookup table EDF-os	Jeremy Erickson	12 years
wip-edf-tie-break	Merge branch 'wip-edf-tie-break' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus...	Glenn Elliott	13 years
wip-edzl-critique	Use hr_timer's active checks instead of having own flag.	Glenn Elliott	15 years
wip-edzl-final	Implementation of the EDZL scheduler.	Glenn Elliott	15 years
wip-edzl-revised	Clean up comments.	Glenn Elliott	15 years
wip-events	Added support for tracing arbitrary actions.	Jonathan Herman	15 years
wip-extra-debug	DBG: add additional tracing	Bjoern B. Brandenburg	15 years
wip-fix-switch-jerickso	Attempt to fix race condition with plugin switching	Jeremy Erickson	15 years
wip-fix3	sched: show length of runqueue clock deactivation in /proc/sched_debug	Bjoern B. Brandenburg	15 years
wip-fmlp-dequeue	Improve FMLP queue management.	Glenn Elliott	14 years
wip-ft-irq-flag	Feather-Trace: keep track of interrupt-related interference.	Bjoern B. Brandenburg	14 years
wip-gpu-cleanup	Enable sched_trace log injection from userspace	Glenn Elliott	13 years
wip-gpu-interrupts	Remove option for threading of all softirqs.	Glenn Elliott	14 years
wip-gpu-rtas12	Generalized GPU cost predictors + EWMA. (untested)	Glenn Elliott	13 years
wip-gpu-rtss12	Final GPUSync implementation.	Glenn Elliott	13 years
wip-gpu-rtss12-srp	experimental changes to support GPUs under SRP	Glenn Elliott	13 years
wip-gpusync-merge	Cleanup priority tracking for budget enforcement.	Glenn Elliott	12 years
wip-ikglp	Move RSM and IKGLP imp. to own .c files	Glenn Elliott	13 years
wip-k-fmlp	Merge branch 'mpi-master' into wip-k-fmlp	Glenn Elliott	14 years
wip-kernel-coloring	Added recolor syscall	Namhoon Kim	7 years
wip-kernthreads	Kludge work-queue processing into klitirqd.	Glenn Elliott	15 years
wip-klmirqd-to-aux	Allow klmirqd threads to be given names.	Glenn Elliott	13 years
wip-kshark	Merge branch 'mpi-staging' into wip-kshark	Jonathan Herman	13 years
wip-litmus-3.2	Merge commit 'v3.2' into litmus-staging	Andrea Bastoni	13 years
wip-litmus2011.2	Cleanup: Coding conformance for affinity stuff.	Glenn Elliott	14 years
wip-litmus3.0-2011.2	Feather-Trace: keep track of interrupt-related interference.	Bjoern B. Brandenburg	14 years
wip-master-2.6.33-rt	Avoid deadlock when switching task policy to BACKGROUND (ugly)	Andrea Bastoni	15 years
wip-mc	Removed ARM-specific hacks which disabled less common mixed-criticality featu...	Jonathan Herman	12 years
wip-mc-bipasa	MC-EDF added	bipasa chattopadhyay	13 years
wip-mc-jerickso	Split C/D queues	Jeremy Erickson	15 years
wip-mc2-cache-slack	Manually patched mc^2 related code	Ming Yang	10 years
wip-mcrit-mac	cosmetic	Mac Mollison	15 years
wip-merge-3.0	Prevent Linux to send IPI and queue tasks on remote CPUs.	Andrea Bastoni	14 years
wip-merge-v3.0	Prevent Linux to send IPI and queue tasks on remote CPUs.	Andrea Bastoni	14 years
wip-migration-affinity	NULL affinity dereference in C-EDF.	Glenn Elliott	14 years
wip-mmap-uncache	share branch with others	Glenn Elliott	13 years
wip-modechange	RTSS 2017 submission	Namhoon Kim	8 years
wip-nested-locking	Appears to be working.	Bryan Ward	12 years
wip-omlp-gedf	First implementation of G-OMLP.	Glenn Elliott	15 years
wip-pai	Some cleanup of PAI	Glenn Elliott	14 years
wip-percore-lib	9/21/2016	Namhoon Kim	9 years
wip-performance	CONFIG_DONT_PREEMPT_ON_TIE: Don't preeempt a scheduled task on priority tie.	Glenn Elliott	14 years
wip-pgm	Add PGM support to C-FL	Glenn Elliott	12 years
wip-pgm-split	First draft of C-FL-split	Namhoon Kim	12 years
wip-pm-ovd	Add preemption-and-migration overhead tracing support	Andrea Bastoni	15 years
wip-prio-inh	P-EDF updated to use the generic pi framework.	Glenn Elliott	15 years
wip-prioq-dgl	BUG FIX: Support DGLs with PRIOQ_MUTEX	Glenn Elliott	13 years
wip-refactored-gedf	Generalizd architecture for GEDF-style scheduelrs to reduce code redundancy.	Glenn Elliott	15 years
wip-release-master-fix	bugfix: release master CPU must signal task was picked	Bjoern B. Brandenburg	14 years
wip-robust-tie-break	EDF priority tie-breaks.	Glenn Elliott	13 years
wip-rt-kshark	Move task time accounting into the complete_job method.	Jonathan Herman	13 years
wip-rtas12-pgm	Scheduling of PGM jobs.	Glenn Elliott	13 years
wip-semi-part	Fix compile error with newer GCC	Jeremy Erickson	12 years
wip-semi-part-edfos-jerickso	Use initial CPU set by client	Jeremy Erickson	12 years
wip-shared-lib	TODO: Fix condition checks in replicate_page_move_mapping()	Namhoon Kim	9 years
wip-shared-lib2	RTAS 2017 Submission ver.	Namhoon Kim	9 years
wip-shared-mem	Initial commit for shared library	Namhoon Kim	9 years
wip-splitting-jerickso	Fix release behavior	Jeremy Erickson	13 years
wip-splitting-omlp-jerickso	Bjoern's Dissertation Code with Priority Donation	Jeremy Erickson	13 years
wip-stage-binheap	An efficient binary heap implementation.	Glenn Elliott	13 years
wip-sun-port	Dynamic memory allocation and clean exit for FeatherTrace	Christopher Kenna	15 years
wip-timer-trace	bugfix: C-EDF, clear scheduled field of the correct CPU upon task_exit	Andrea Bastoni	15 years
wip-tracepoints	Add kernel-style events for sched_trace_XXX() functions	Andrea Bastoni	14 years

Tag	Download	Author	Age
2015.1	commit 8e51b37822...	Bjoern Brandenburg	10 years
2013.1	commit bcaacec1ca...	Glenn Elliott	12 years
2012.3	commit c158b5fbe4...	Jonathan Herman	13 years
2012.2	commit b53c479a0f...	Glenn Elliott	13 years
2012.1	commit 83b11ea1c6...	Bjoern B. Brandenburg	14 years
rtas12-mc-beta-exp	commit 8e236ee20f...	Christopher Kenna	14 years
2011.1	commit d11808b5c6...	Christopher Kenna	15 years
v2.6.37-rc4	commit e8a7e48bb2...	Linus Torvalds	15 years
v2.6.37-rc3	commit 3561d43fd2...	Linus Torvalds	15 years
v2.6.37-rc2	commit e53beacd23...	Linus Torvalds	15 years
v2.6.37-rc1	commit c8ddb2713c...	Linus Torvalds	15 years
v2.6.36	commit f6f94e2ab1...	Linus Torvalds	15 years
2010.2	commit 5c5456402d...	Bjoern B. Brandenburg	15 years
v2.6.36-rc8	commit cd07202cc8...	Linus Torvalds	15 years
v2.6.36-rc7	commit cb655d0f3d...	Linus Torvalds	15 years
v2.6.36-rc6	commit 899611ee7d...	Linus Torvalds	15 years
v2.6.36-rc5	commit b30a3f6257...	Linus Torvalds	15 years
v2.6.36-rc4	commit 49553c2ef8...	Linus Torvalds	15 years
v2.6.36-rc3	commit 2bfc96a127...	Linus Torvalds	15 years
v2.6.36-rc2	commit 76be97c1fc...	Linus Torvalds	15 years
v2.6.36-rc1	commit da5cabf80e...	Linus Torvalds	15 years
v2.6.35	commit 9fe6206f40...	Linus Torvalds	15 years
v2.6.35-rc6	commit b37fa16e78...	Linus Torvalds	15 years
v2.6.35-rc5	commit 1c5474a65b...	Linus Torvalds	15 years
v2.6.35-rc4	commit 815c4163b6...	Linus Torvalds	15 years
v2.6.35-rc3	commit 7e27d6e778...	Linus Torvalds	15 years
v2.6.35-rc2	commit e44a21b726...	Linus Torvalds	15 years
v2.6.35-rc1	commit 67a3e12b05...	Linus Torvalds	15 years
2010.1	commit 7c1ff4c544...	Andrea Bastoni	15 years
v2.6.34	commit e40152ee1e...	Linus Torvalds	15 years
v2.6.33.4	commit 4640b4e7d9...	Greg Kroah-Hartman	15 years
v2.6.34-rc7	commit b57f95a382...	Linus Torvalds	15 years
v2.6.34-rc6	commit 66f41d4c5c...	Linus Torvalds	15 years
v2.6.33.3	commit 3e7ad8ed97...	Greg Kroah-Hartman	15 years
v2.6.34-rc5	commit 01bf0b6457...	Linus Torvalds	15 years
v2.6.34-rc4	commit 0d0fb0f9c5...	Linus Torvalds	15 years
v2.6.33.2	commit 19f00f070c...	Greg Kroah-Hartman	15 years
v2.6.34-rc3	commit 2eaa9cfdf3...	Linus Torvalds	15 years
v2.6.34-rc2	commit 220bf991b0...	Linus Torvalds	15 years
v2.6.33.1	commit dbdafe5ccf...	Greg Kroah-Hartman	16 years
v2.6.34-rc1	commit 57d54889cd...	Linus Torvalds	16 years
v2.6.33	commit 60b341b778...	Linus Torvalds	16 years
v2.6.33-rc8	commit 724e6d3fe8...	Linus Torvalds	16 years
v2.6.33-rc7	commit 29275254ca...	Linus Torvalds	16 years
v2.6.33-rc6	commit abe94c756c...	Linus Torvalds	16 years
v2.6.33-rc5	commit 92dcffb916...	Linus Torvalds	16 years
v2.6.33-rc4	commit 7284ce6c9f...	Linus Torvalds	16 years
v2.6.33-rc3	commit 74d2e4f8d7...	Linus Torvalds	16 years
v2.6.33-rc2	commit 6b7b284958...	Linus Torvalds	16 years
v2.6.33-rc1	commit 55639353a0...	Linus Torvalds	16 years
v2.6.32	commit 22763c5cf3...	Linus Torvalds	16 years
v2.6.32-rc8	commit 648f4e3e50...	Linus Torvalds	16 years
v2.6.32-rc7	commit 156171c71a...	Linus Torvalds	16 years
v2.6.32-rc6	commit b419148e56...	Linus Torvalds	16 years
v2.6.32-rc5	commit 012abeea66...	Linus Torvalds	16 years
v2.6.32-rc4	commit 161291396e...	Linus Torvalds	16 years
v2.6.32-rc3	commit 374576a8b6...	Linus Torvalds	16 years
v2.6.32-rc1	commit 17d857be64...	Linus Torvalds	16 years
v2.6.32-rc2	commit 17d857be64...	Linus Torvalds	16 years
v2.6.31	commit 74fca6a428...	Linus Torvalds	16 years
v2.6.31-rc9	commit e07cccf404...	Linus Torvalds	16 years
v2.6.31-rc8	commit 326ba5010a...	Linus Torvalds	16 years
v2.6.31-rc7	commit 422bef879e...	Linus Torvalds	16 years
v2.6.31-rc6	commit 64f1607ffb...	Linus Torvalds	16 years
v2.6.31-rc5	commit ed680c4ad4...	Linus Torvalds	16 years
v2.6.31-rc4	commit 4be3bd7849...	Linus Torvalds	16 years
v2.6.31-rc3	commit 6847e154e3...	Linus Torvalds	16 years
v2.6.31-rc2	commit 8e4a718ff3...	Linus Torvalds	16 years
v2.6.31-rc1	commit 28d0325ce6...	Linus Torvalds	16 years
v2.6.30	commit 07a2039b8e...	Linus Torvalds	16 years
v2.6.30-rc8	commit 9fa7eb283c...	Linus Torvalds	16 years
v2.6.30-rc7	commit 59a3759d0f...	Linus Torvalds	16 years
v2.6.30-rc6	commit 1406de8e11...	Linus Torvalds	16 years
v2.6.30-rc5	commit 091bf7624d...	Linus Torvalds	16 years
v2.6.30-rc4	commit 091438dd56...	Linus Torvalds	16 years
v2.6.30-rc3	commit 0910697403...	Linus Torvalds	16 years
v2.6.30-rc2	commit 0882e8dd3a...	Linus Torvalds	16 years
v2.6.30-rc1	commit 577c9c456f...	Linus Torvalds	16 years
v2.6.29	commit 8e0ee43bc2...	Linus Torvalds	16 years
v2.6.29-rc8	commit 041b62374c...	Linus Torvalds	17 years
v2.6.29-rc7	commit fec6c6fec3...	Linus Torvalds	17 years
v2.6.29-rc6	commit 20f4d6c3a2...	Linus Torvalds	17 years
v2.6.29-rc5	commit d2f8d7ee1a...	Linus Torvalds	17 years
v2.6.29-rc4	commit 8e4921515c...	Linus Torvalds	17 years
v2.6.29-rc3	commit 18e352e4a7...	Linus Torvalds	17 years
v2.6.29-rc2	commit 1de9e8e70f...	Linus Torvalds	17 years
v2.6.29-rc1	commit c59765042f...	Linus Torvalds	17 years
v2.6.28	commit 4a6908a3a0...	Linus Torvalds	17 years
v2.6.28-rc9	commit 929096fe9f...	Linus Torvalds	17 years
v2.6.28-rc8	commit 8b1fae4e42...	Linus Torvalds	17 years
v2.6.28-rc7	commit 061e41fdb5...	Linus Torvalds	17 years
v2.6.28-rc6	commit 13d428afc0...	Linus Torvalds	17 years
v2.6.28-rc5	commit 9bf1a2445f...	Linus Torvalds	17 years
v2.6.28-rc4	commit f7160c7573...	Linus Torvalds	17 years
v2.6.28-rc3	commit 45beca08dd...	Linus Torvalds	17 years
v2.6.28-rc2	commit 0173a3265b...	Linus Torvalds	17 years
v2.6.28-rc1	commit 57f8f7b60d...	Linus Torvalds	17 years
v2.6.27	commit 3fa8749e58...	Linus Torvalds	17 years
v2.6.27-rc9	commit 4330ed8ed4...	Linus Torvalds	17 years
v2.6.27-rc8	commit 94aca1dac6...	Linus Torvalds	17 years
v2.6.27-rc7	commit 72d31053f6...	Linus Torvalds	17 years
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v2.6.27-rc4	commit 6a55617ed5...	Linus Torvalds	17 years
v2.6.27-rc3	commit 30a2f3c60a...	Linus Torvalds	17 years
v2.6.27-rc2	commit 0967d61ea0...	Linus Torvalds	17 years
v2.6.27-rc1	commit 6e86841d05...	Linus Torvalds	17 years
v2.6.26	commit bce7f793da...	Linus Torvalds	17 years
v2.6.26-rc9	commit b7279469d6...	Linus Torvalds	17 years
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v2.6.26-rc3	commit b8291ad07a...	Linus Torvalds	17 years
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v2.6.25	commit 4b119e21d0...	Linus Torvalds	17 years
v2.6.25-rc9	commit 120dd64cac...	Linus Torvalds	17 years
v2.6.25-rc8	commit 0e81a8ae37...	Linus Torvalds	17 years
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v2.6.25-rc6	commit a978b30af3...	Linus Torvalds	18 years
v2.6.25-rc5	commit cdeeeae056...	Linus Torvalds	18 years
v2.6.25-rc4	commit 29e8c3c304...	Linus Torvalds	18 years
v2.6.25-rc3	commit bfa274e243...	Linus Torvalds	18 years
v2.6.25-rc2	commit 101142c37b...	Linus Torvalds	18 years
v2.6.25-rc1	commit 19af35546d...	Linus Torvalds	18 years
v2.6.24	commit 49914084e7...	Linus Torvalds	18 years
v2.6.24-rc8	commit cbd9c88369...	Linus Torvalds	18 years
v2.6.24-rc7	commit 3ce5445046...	Linus Torvalds	18 years
v2.6.24-rc6	commit ea67db4cdb...	Linus Torvalds	18 years
v2.6.24-rc5	commit 82d29bf6dc...	Linus Torvalds	18 years
v2.6.24-rc4	commit 09b56adc98...	Linus Torvalds	18 years
v2.6.24-rc3	commit d9f8bcbf67...	Linus Torvalds	18 years
v2.6.24-rc2	commit dbeeb816e8...	Linus Torvalds	18 years
v2.6.24-rc1	commit c9927c2bf4...	Linus Torvalds	18 years
v2.6.23	commit bbf25010f1...	Linus Torvalds	18 years
v2.6.23-rc9	commit 3146b39c18...	Linus Torvalds	18 years
v2.6.23-rc8	commit 4942de4a0e...	Linus Torvalds	18 years
v2.6.23-rc7	commit 81cfe79b9c...	Linus Torvalds	18 years
v2.6.23-rc6	commit 0d4cbb5e7f...	Linus Torvalds	18 years
v2.6.23-rc5	commit 40ffbfad6b...	Linus Torvalds	18 years
v2.6.23-rc4	commit b07d68b5ca...	Linus Torvalds	18 years
v2.6.23-rc3	commit 39d3520c92...	Linus Torvalds	18 years
v2.6.23-rc2	commit d4ac2477fa...	Linus Torvalds	18 years
v2.6.23-rc1	commit f695baf2df...	Linus Torvalds	18 years
v2.6.22	commit 7dcca30a32...	Linus Torvalds	18 years
v2.6.22-rc7	commit a38d6181ff...	Linus Torvalds	18 years
v2.6.22-rc6	commit 189548642c...	Linus Torvalds	18 years
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v2.6.22-rc4	commit 5ecd3100e6...	Linus Torvalds	18 years
v2.6.22-rc3	commit c420bc9f09...	Linus Torvalds	18 years
v2.6.22-rc2	commit 55b637c6a0...	Linus Torvalds	18 years
v2.6.22-rc1	commit 39403865d2...	Linus Torvalds	18 years
v2.6.21	commit de46c33745...	Linus Torvalds	18 years
v2.6.21-rc7	commit 94a05509a9...	Linus Torvalds	18 years
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v2.6.20	commit 62d0cfcb27...	Linus Torvalds	19 years
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v2.6.20-rc4	commit bf81b46482...	Linus Torvalds	19 years
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v2.6.19-rc6	commit 44597f65f6...	Linus Torvalds	19 years
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v2.6.11	tree c39ae07f39...
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/* * Copyright (c) 2010 Broadcom Corporation * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/types.h> #include <linux/kernel.h> #include <linux/kthread.h> #include <linux/printk.h> #include <linux/pci_ids.h> #include <linux/netdevice.h> #include <linux/interrupt.h> #include <linux/sched.h> #include <linux/mmc/sdio.h> #include <linux/mmc/sdio_func.h> #include <linux/mmc/card.h> #include <linux/semaphore.h> #include <linux/firmware.h> #include <linux/module.h> #include <linux/bcma/bcma.h> #include <linux/debugfs.h> #include <linux/vmalloc.h> #include <asm/unaligned.h> #include <defs.h> #include <brcmu_wifi.h> #include <brcmu_utils.h> #include <brcm_hw_ids.h> #include <soc.h> #include "sdio_host.h" #include "sdio_chip.h" #define DCMD_RESP_TIMEOUT 2000 /* In milli second */ #ifdef DEBUG #define BRCMF_TRAP_INFO_SIZE 80 #define CBUF_LEN (128) /* Device console log buffer state */ #define CONSOLE_BUFFER_MAX 2024 struct rte_log_le { __le32 buf; /* Can't be pointer on (64-bit) hosts */ __le32 buf_size; __le32 idx; char *_buf_compat; /* Redundant pointer for backward compat. */ }; struct rte_console { /* Virtual UART * When there is no UART (e.g. Quickturn), * the host should write a complete * input line directly into cbuf and then write * the length into vcons_in. * This may also be used when there is a real UART * (at risk of conflicting with * the real UART). vcons_out is currently unused. */ uint vcons_in; uint vcons_out; /* Output (logging) buffer * Console output is written to a ring buffer log_buf at index log_idx. * The host may read the output when it sees log_idx advance. * Output will be lost if the output wraps around faster than the host * polls. */ struct rte_log_le log_le; /* Console input line buffer * Characters are read one at a time into cbuf * until <CR> is received, then * the buffer is processed as a command line. * Also used for virtual UART. */ uint cbuf_idx; char cbuf[CBUF_LEN]; }; #endif /* DEBUG */ #include <chipcommon.h> #include "dhd_bus.h" #include "dhd_dbg.h" #define TXQLEN 2048 /* bulk tx queue length */ #define TXHI (TXQLEN - 256) /* turn on flow control above TXHI */ #define TXLOW (TXHI - 256) /* turn off flow control below TXLOW */ #define PRIOMASK 7 #define TXRETRIES 2 /* # of retries for tx frames */ #define BRCMF_RXBOUND 50 /* Default for max rx frames in one scheduling */ #define BRCMF_TXBOUND 20 /* Default for max tx frames in one scheduling */ #define BRCMF_TXMINMAX 1 /* Max tx frames if rx still pending */ #define MEMBLOCK 2048 /* Block size used for downloading of dongle image */ #define MAX_DATA_BUF (32 * 1024) /* Must be large enough to hold biggest possible glom */ #define BRCMF_FIRSTREAD (1 << 6) /* SBSDIO_DEVICE_CTL */ /* 1: device will assert busy signal when receiving CMD53 */ #define SBSDIO_DEVCTL_SETBUSY 0x01 /* 1: assertion of sdio interrupt is synchronous to the sdio clock */ #define SBSDIO_DEVCTL_SPI_INTR_SYNC 0x02 /* 1: mask all interrupts to host except the chipActive (rev 8) */ #define SBSDIO_DEVCTL_CA_INT_ONLY 0x04 /* 1: isolate internal sdio signals, put external pads in tri-state; requires * sdio bus power cycle to clear (rev 9) */ #define SBSDIO_DEVCTL_PADS_ISO 0x08 /* Force SD->SB reset mapping (rev 11) */ #define SBSDIO_DEVCTL_SB_RST_CTL 0x30 /* Determined by CoreControl bit */ #define SBSDIO_DEVCTL_RST_CORECTL 0x00 /* Force backplane reset */ #define SBSDIO_DEVCTL_RST_BPRESET 0x10 /* Force no backplane reset */ #define SBSDIO_DEVCTL_RST_NOBPRESET 0x20 /* direct(mapped) cis space */ /* MAPPED common CIS address */ #define SBSDIO_CIS_BASE_COMMON 0x1000 /* maximum bytes in one CIS */ #define SBSDIO_CIS_SIZE_LIMIT 0x200 /* cis offset addr is < 17 bits */ #define SBSDIO_CIS_OFT_ADDR_MASK 0x1FFFF /* manfid tuple length, include tuple, link bytes */ #define SBSDIO_CIS_MANFID_TUPLE_LEN 6 /* intstatus */ #define I_SMB_SW0 (1 << 0) /* To SB Mail S/W interrupt 0 */ #define I_SMB_SW1 (1 << 1) /* To SB Mail S/W interrupt 1 */ #define I_SMB_SW2 (1 << 2) /* To SB Mail S/W interrupt 2 */ #define I_SMB_SW3 (1 << 3) /* To SB Mail S/W interrupt 3 */ #define I_SMB_SW_MASK 0x0000000f /* To SB Mail S/W interrupts mask */ #define I_SMB_SW_SHIFT 0 /* To SB Mail S/W interrupts shift */ #define I_HMB_SW0 (1 << 4) /* To Host Mail S/W interrupt 0 */ #define I_HMB_SW1 (1 << 5) /* To Host Mail S/W interrupt 1 */ #define I_HMB_SW2 (1 << 6) /* To Host Mail S/W interrupt 2 */ #define I_HMB_SW3 (1 << 7) /* To Host Mail S/W interrupt 3 */ #define I_HMB_SW_MASK 0x000000f0 /* To Host Mail S/W interrupts mask */ #define I_HMB_SW_SHIFT 4 /* To Host Mail S/W interrupts shift */ #define I_WR_OOSYNC (1 << 8) /* Write Frame Out Of Sync */ #define I_RD_OOSYNC (1 << 9) /* Read Frame Out Of Sync */ #define I_PC (1 << 10) /* descriptor error */ #define I_PD (1 << 11) /* data error */ #define I_DE (1 << 12) /* Descriptor protocol Error */ #define I_RU (1 << 13) /* Receive descriptor Underflow */ #define I_RO (1 << 14) /* Receive fifo Overflow */ #define I_XU (1 << 15) /* Transmit fifo Underflow */ #define I_RI (1 << 16) /* Receive Interrupt */ #define I_BUSPWR (1 << 17) /* SDIO Bus Power Change (rev 9) */ #define I_XMTDATA_AVAIL (1 << 23) /* bits in fifo */ #define I_XI (1 << 24) /* Transmit Interrupt */ #define I_RF_TERM (1 << 25) /* Read Frame Terminate */ #define I_WF_TERM (1 << 26) /* Write Frame Terminate */ #define I_PCMCIA_XU (1 << 27) /* PCMCIA Transmit FIFO Underflow */ #define I_SBINT (1 << 28) /* sbintstatus Interrupt */ #define I_CHIPACTIVE (1 << 29) /* chip from doze to active state */ #define I_SRESET (1 << 30) /* CCCR RES interrupt */ #define I_IOE2 (1U << 31) /* CCCR IOE2 Bit Changed */ #define I_ERRORS (I_PC | I_PD | I_DE | I_RU | I_RO | I_XU) #define I_DMA (I_RI | I_XI | I_ERRORS) /* corecontrol */ #define CC_CISRDY (1 << 0) /* CIS Ready */ #define CC_BPRESEN (1 << 1) /* CCCR RES signal */ #define CC_F2RDY (1 << 2) /* set CCCR IOR2 bit */ #define CC_CLRPADSISO (1 << 3) /* clear SDIO pads isolation */ #define CC_XMTDATAAVAIL_MODE (1 << 4) #define CC_XMTDATAAVAIL_CTRL (1 << 5) /* SDA_FRAMECTRL */ #define SFC_RF_TERM (1 << 0) /* Read Frame Terminate */ #define SFC_WF_TERM (1 << 1) /* Write Frame Terminate */ #define SFC_CRC4WOOS (1 << 2) /* CRC error for write out of sync */ #define SFC_ABORTALL (1 << 3) /* Abort all in-progress frames */ /* HW frame tag */ #define SDPCM_FRAMETAG_LEN 4 /* 2 bytes len, 2 bytes check val */ /* Total length of frame header for dongle protocol */ #define SDPCM_HDRLEN (SDPCM_FRAMETAG_LEN + SDPCM_SWHEADER_LEN) #define SDPCM_RESERVE (SDPCM_HDRLEN + BRCMF_SDALIGN) /* * Software allocation of To SB Mailbox resources */ /* tosbmailbox bits corresponding to intstatus bits */ #define SMB_NAK (1 << 0) /* Frame NAK */ #define SMB_INT_ACK (1 << 1) /* Host Interrupt ACK */ #define SMB_USE_OOB (1 << 2) /* Use OOB Wakeup */ #define SMB_DEV_INT (1 << 3) /* Miscellaneous Interrupt */ /* tosbmailboxdata */ #define SMB_DATA_VERSION_SHIFT 16 /* host protocol version */ /* * Software allocation of To Host Mailbox resources */ /* intstatus bits */ #define I_HMB_FC_STATE I_HMB_SW0 /* Flow Control State */ #define I_HMB_FC_CHANGE I_HMB_SW1 /* Flow Control State Changed */ #define I_HMB_FRAME_IND I_HMB_SW2 /* Frame Indication */ #define I_HMB_HOST_INT I_HMB_SW3 /* Miscellaneous Interrupt */ /* tohostmailboxdata */ #define HMB_DATA_NAKHANDLED 1 /* retransmit NAK'd frame */ #define HMB_DATA_DEVREADY 2 /* talk to host after enable */ #define HMB_DATA_FC 4 /* per prio flowcontrol update flag */ #define HMB_DATA_FWREADY 8 /* fw ready for protocol activity */ #define HMB_DATA_FCDATA_MASK 0xff000000 #define HMB_DATA_FCDATA_SHIFT 24 #define HMB_DATA_VERSION_MASK 0x00ff0000 #define HMB_DATA_VERSION_SHIFT 16 /* * Software-defined protocol header */ /* Current protocol version */ #define SDPCM_PROT_VERSION 4 /* SW frame header */ #define SDPCM_PACKET_SEQUENCE(p) (((u8 *)p)[0] & 0xff) #define SDPCM_CHANNEL_MASK 0x00000f00 #define SDPCM_CHANNEL_SHIFT 8 #define SDPCM_PACKET_CHANNEL(p) (((u8 *)p)[1] & 0x0f) #define SDPCM_NEXTLEN_OFFSET 2 /* Data Offset from SOF (HW Tag, SW Tag, Pad) */ #define SDPCM_DOFFSET_OFFSET 3 /* Data Offset */ #define SDPCM_DOFFSET_VALUE(p) (((u8 *)p)[SDPCM_DOFFSET_OFFSET] & 0xff) #define SDPCM_DOFFSET_MASK 0xff000000 #define SDPCM_DOFFSET_SHIFT 24 #define SDPCM_FCMASK_OFFSET 4 /* Flow control */ #define SDPCM_FCMASK_VALUE(p) (((u8 *)p)[SDPCM_FCMASK_OFFSET] & 0xff) #define SDPCM_WINDOW_OFFSET 5 /* Credit based fc */ #define SDPCM_WINDOW_VALUE(p) (((u8 *)p)[SDPCM_WINDOW_OFFSET] & 0xff) #define SDPCM_SWHEADER_LEN 8 /* SW header is 64 bits */ /* logical channel numbers */ #define SDPCM_CONTROL_CHANNEL 0 /* Control channel Id */ #define SDPCM_EVENT_CHANNEL 1 /* Asyc Event Indication Channel Id */ #define SDPCM_DATA_CHANNEL 2 /* Data Xmit/Recv Channel Id */ #define SDPCM_GLOM_CHANNEL 3 /* For coalesced packets */ #define SDPCM_TEST_CHANNEL 15 /* Reserved for test/debug packets */ #define SDPCM_SEQUENCE_WRAP 256 /* wrap-around val for 8bit frame seq */ #define SDPCM_GLOMDESC(p) (((u8 *)p)[1] & 0x80) /* * Shared structure between dongle and the host. * The structure contains pointers to trap or assert information. */ #define SDPCM_SHARED_VERSION 0x0003 #define SDPCM_SHARED_VERSION_MASK 0x00FF #define SDPCM_SHARED_ASSERT_BUILT 0x0100 #define SDPCM_SHARED_ASSERT 0x0200 #define SDPCM_SHARED_TRAP 0x0400 /* Space for header read, limit for data packets */ #define MAX_HDR_READ (1 << 6) #define MAX_RX_DATASZ 2048 /* Maximum milliseconds to wait for F2 to come up */ #define BRCMF_WAIT_F2RDY 3000 /* Bump up limit on waiting for HT to account for first startup; * if the image is doing a CRC calculation before programming the PMU * for HT availability, it could take a couple hundred ms more, so * max out at a 1 second (1000000us). */ #undef PMU_MAX_TRANSITION_DLY #define PMU_MAX_TRANSITION_DLY 1000000 /* Value for ChipClockCSR during initial setup */ #define BRCMF_INIT_CLKCTL1 (SBSDIO_FORCE_HW_CLKREQ_OFF | \ SBSDIO_ALP_AVAIL_REQ) /* Flags for SDH calls */ #define F2SYNC (SDIO_REQ_4BYTE | SDIO_REQ_FIXED) #define BRCMF_SDIO_FW_NAME "brcm/brcmfmac-sdio.bin" #define BRCMF_SDIO_NV_NAME "brcm/brcmfmac-sdio.txt" MODULE_FIRMWARE(BRCMF_SDIO_FW_NAME); MODULE_FIRMWARE(BRCMF_SDIO_NV_NAME); #define BRCMF_IDLE_IMMEDIATE (-1) /* Enter idle immediately */ #define BRCMF_IDLE_ACTIVE 0 /* Do not request any SD clock change * when idle */ #define BRCMF_IDLE_INTERVAL 1 /* * Conversion of 802.1D priority to precedence level */ static uint prio2prec(u32 prio) { return (prio == PRIO_8021D_NONE || prio == PRIO_8021D_BE) ? (prio^2) : prio; } /* core registers */ struct sdpcmd_regs { u32 corecontrol; /* 0x00, rev8 */ u32 corestatus; /* rev8 */ u32 PAD[1]; u32 biststatus; /* rev8 */ /* PCMCIA access */ u16 pcmciamesportaladdr; /* 0x010, rev8 */ u16 PAD[1]; u16 pcmciamesportalmask; /* rev8 */ u16 PAD[1]; u16 pcmciawrframebc; /* rev8 */ u16 PAD[1]; u16 pcmciaunderflowtimer; /* rev8 */ u16 PAD[1]; /* interrupt */ u32 intstatus; /* 0x020, rev8 */ u32 hostintmask; /* rev8 */ u32 intmask; /* rev8 */ u32 sbintstatus; /* rev8 */ u32 sbintmask; /* rev8 */ u32 funcintmask; /* rev4 */ u32 PAD[2]; u32 tosbmailbox; /* 0x040, rev8 */ u32 tohostmailbox; /* rev8 */ u32 tosbmailboxdata; /* rev8 */ u32 tohostmailboxdata; /* rev8 */ /* synchronized access to registers in SDIO clock domain */ u32 sdioaccess; /* 0x050, rev8 */ u32 PAD[3]; /* PCMCIA frame control */ u8 pcmciaframectrl; /* 0x060, rev8 */ u8 PAD[3]; u8 pcmciawatermark; /* rev8 */ u8 PAD[155]; /* interrupt batching control */ u32 intrcvlazy; /* 0x100, rev8 */ u32 PAD[3]; /* counters */ u32 cmd52rd; /* 0x110, rev8 */ u32 cmd52wr; /* rev8 */ u32 cmd53rd; /* rev8 */ u32 cmd53wr; /* rev8 */ u32 abort; /* rev8 */ u32 datacrcerror; /* rev8 */ u32 rdoutofsync; /* rev8 */ u32 wroutofsync; /* rev8 */ u32 writebusy; /* rev8 */ u32 readwait; /* rev8 */ u32 readterm; /* rev8 */ u32 writeterm; /* rev8 */ u32 PAD[40]; u32 clockctlstatus; /* rev8 */ u32 PAD[7]; u32 PAD[128]; /* DMA engines */ /* SDIO/PCMCIA CIS region */ char cis[512]; /* 0x400-0x5ff, rev6 */ /* PCMCIA function control registers */ char pcmciafcr[256]; /* 0x600-6ff, rev6 */ u16 PAD[55]; /* PCMCIA backplane access */ u16 backplanecsr; /* 0x76E, rev6 */ u16 backplaneaddr0; /* rev6 */ u16 backplaneaddr1; /* rev6 */ u16 backplaneaddr2; /* rev6 */ u16 backplaneaddr3; /* rev6 */ u16 backplanedata0; /* rev6 */ u16 backplanedata1; /* rev6 */ u16 backplanedata2; /* rev6 */ u16 backplanedata3; /* rev6 */ u16 PAD[31]; /* sprom "size" & "blank" info */ u16 spromstatus; /* 0x7BE, rev2 */ u32 PAD[464]; u16 PAD[0x80]; }; #ifdef DEBUG /* Device console log buffer state */ struct brcmf_console { uint count; /* Poll interval msec counter */ uint log_addr; /* Log struct address (fixed) */ struct rte_log_le log_le; /* Log struct (host copy) */ uint bufsize; /* Size of log buffer */ u8 *buf; /* Log buffer (host copy) */ uint last; /* Last buffer read index */ }; struct brcmf_trap_info { __le32 type; __le32 epc; __le32 cpsr; __le32 spsr; __le32 r0; /* a1 */ __le32 r1; /* a2 */ __le32 r2; /* a3 */ __le32 r3; /* a4 */ __le32 r4; /* v1 */ __le32 r5; /* v2 */ __le32 r6; /* v3 */ __le32 r7; /* v4 */ __le32 r8; /* v5 */ __le32 r9; /* sb/v6 */ __le32 r10; /* sl/v7 */ __le32 r11; /* fp/v8 */ __le32 r12; /* ip */ __le32 r13; /* sp */ __le32 r14; /* lr */ __le32 pc; /* r15 */ }; #endif /* DEBUG */ struct sdpcm_shared { u32 flags; u32 trap_addr; u32 assert_exp_addr; u32 assert_file_addr; u32 assert_line; u32 console_addr; /* Address of struct rte_console */ u32 msgtrace_addr; u8 tag[32]; u32 brpt_addr; }; struct sdpcm_shared_le { __le32 flags; __le32 trap_addr; __le32 assert_exp_addr; __le32 assert_file_addr; __le32 assert_line; __le32 console_addr; /* Address of struct rte_console */ __le32 msgtrace_addr; u8 tag[32]; __le32 brpt_addr; }; /* misc chip info needed by some of the routines */ /* Private data for SDIO bus interaction */ struct brcmf_sdio { struct brcmf_sdio_dev *sdiodev; /* sdio device handler */ struct chip_info *ci; /* Chip info struct */ char *vars; /* Variables (from CIS and/or other) */ uint varsz; /* Size of variables buffer */ u32 ramsize; /* Size of RAM in SOCRAM (bytes) */ u32 hostintmask; /* Copy of Host Interrupt Mask */ u32 intstatus; /* Intstatus bits (events) pending */ bool fcstate; /* State of dongle flow-control */ uint blocksize; /* Block size of SDIO transfers */ uint roundup; /* Max roundup limit */ struct pktq txq; /* Queue length used for flow-control */ u8 flowcontrol; /* per prio flow control bitmask */ u8 tx_seq; /* Transmit sequence number (next) */ u8 tx_max; /* Maximum transmit sequence allowed */ u8 hdrbuf[MAX_HDR_READ + BRCMF_SDALIGN]; u8 *rxhdr; /* Header of current rx frame (in hdrbuf) */ u16 nextlen; /* Next Read Len from last header */ u8 rx_seq; /* Receive sequence number (expected) */ bool rxskip; /* Skip receive (awaiting NAK ACK) */ uint rxbound; /* Rx frames to read before resched */ uint txbound; /* Tx frames to send before resched */ uint txminmax; struct sk_buff *glomd; /* Packet containing glomming descriptor */ struct sk_buff_head glom; /* Packet list for glommed superframe */ uint glomerr; /* Glom packet read errors */ u8 *rxbuf; /* Buffer for receiving control packets */ uint rxblen; /* Allocated length of rxbuf */ u8 *rxctl; /* Aligned pointer into rxbuf */ u8 *databuf; /* Buffer for receiving big glom packet */ u8 *dataptr; /* Aligned pointer into databuf */ uint rxlen; /* Length of valid data in buffer */ u8 sdpcm_ver; /* Bus protocol reported by dongle */ bool intr; /* Use interrupts */ bool poll; /* Use polling */ atomic_t ipend; /* Device interrupt is pending */ uint spurious; /* Count of spurious interrupts */ uint pollrate; /* Ticks between device polls */ uint polltick; /* Tick counter */ #ifdef DEBUG uint console_interval; struct brcmf_console console; /* Console output polling support */ uint console_addr; /* Console address from shared struct */ #endif /* DEBUG */ uint clkstate; /* State of sd and backplane clock(s) */ bool activity; /* Activity flag for clock down */ s32 idletime; /* Control for activity timeout */ s32 idlecount; /* Activity timeout counter */ s32 idleclock; /* How to set bus driver when idle */ s32 sd_rxchain; bool use_rxchain; /* If brcmf should use PKT chains */ bool rxflow_mode; /* Rx flow control mode */ bool rxflow; /* Is rx flow control on */ bool alp_only; /* Don't use HT clock (ALP only) */ /* Field to decide if rx of control frames happen in rxbuf or lb-pool */ bool usebufpool; u8 *ctrl_frame_buf; u32 ctrl_frame_len; bool ctrl_frame_stat; spinlock_t txqlock; wait_queue_head_t ctrl_wait; wait_queue_head_t dcmd_resp_wait; struct timer_list timer; struct completion watchdog_wait; struct task_struct *watchdog_tsk; bool wd_timer_valid; uint save_ms; struct workqueue_struct *brcmf_wq; struct work_struct datawork; struct list_head dpc_tsklst; spinlock_t dpc_tl_lock; struct semaphore sdsem; const struct firmware *firmware; u32 fw_ptr; bool txoff; /* Transmit flow-controlled */ struct brcmf_sdio_count sdcnt; }; /* clkstate */ #define CLK_NONE 0 #define CLK_SDONLY 1 #define CLK_PENDING 2 /* Not used yet */ #define CLK_AVAIL 3 #ifdef DEBUG static int qcount[NUMPRIO]; static int tx_packets[NUMPRIO]; #endif /* DEBUG */ #define SDIO_DRIVE_STRENGTH 6 /* in milliamps */ #define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL) /* Retry count for register access failures */ static const uint retry_limit = 2; /* Limit on rounding up frames */ static const uint max_roundup = 512; #define ALIGNMENT 4 static void pkt_align(struct sk_buff *p, int len, int align) { uint datalign; datalign = (unsigned long)(p->data); datalign = roundup(datalign, (align)) - datalign; if (datalign) skb_pull(p, datalign); __skb_trim(p, len); } /* To check if there's window offered */ static bool data_ok(struct brcmf_sdio *bus) { return (u8)(bus->tx_max - bus->tx_seq) != 0 && ((u8)(bus->tx_max - bus->tx_seq) & 0x80) == 0; } /* * Reads a register in the SDIO hardware block. This block occupies a series of * adresses on the 32 bit backplane bus. */ static int r_sdreg32(struct brcmf_sdio *bus, u32 *regvar, u32 offset) { u8 idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); int ret; *regvar = brcmf_sdio_regrl(bus->sdiodev, bus->ci->c_inf[idx].base + offset, &ret); return ret; } static int w_sdreg32(struct brcmf_sdio *bus, u32 regval, u32 reg_offset) { u8 idx = brcmf_sdio_chip_getinfidx(bus->ci, BCMA_CORE_SDIO_DEV); int ret; brcmf_sdio_regwl(bus->sdiodev, bus->ci->c_inf[idx].base + reg_offset, regval, &ret); return ret; } #define PKT_AVAILABLE() (intstatus & I_HMB_FRAME_IND) #define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE) /* Packet free applicable unconditionally for sdio and sdspi. * Conditional if bufpool was present for gspi bus. */ static void brcmf_sdbrcm_pktfree2(struct brcmf_sdio *bus, struct sk_buff *pkt) { if (bus->usebufpool) brcmu_pkt_buf_free_skb(pkt); } /* Turn backplane clock on or off */ static int brcmf_sdbrcm_htclk(struct brcmf_sdio *bus, bool on, bool pendok) { int err; u8 clkctl, clkreq, devctl; unsigned long timeout; brcmf_dbg(TRACE, "Enter\n"); clkctl = 0; if (on) { /* Request HT Avail */ clkreq = bus->alp_only ? SBSDIO_ALP_AVAIL_REQ : SBSDIO_HT_AVAIL_REQ; brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkreq, &err); if (err) { brcmf_dbg(ERROR, "HT Avail request error: %d\n", err); return -EBADE; } /* Check current status */ clkctl = brcmf_sdio_regrb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, &err); if (err) { brcmf_dbg(ERROR, "HT Avail read error: %d\n", err); return -EBADE; } /* Go to pending and await interrupt if appropriate */ if (!SBSDIO_CLKAV(clkctl, bus->alp_only) && pendok) { /* Allow only clock-available interrupt */ devctl = brcmf_sdio_regrb(bus->sdiodev, SBSDIO_DEVICE_CTL, &err); if (err) { brcmf_dbg(ERROR, "Devctl error setting CA: %d\n", err); return -EBADE; } devctl |= SBSDIO_DEVCTL_CA_INT_ONLY; brcmf_sdio_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, devctl, &err); brcmf_dbg(INFO, "CLKCTL: set PENDING\n"); bus->clkstate = CLK_PENDING; return 0; } else if (bus->clkstate == CLK_PENDING) { /* Cancel CA-only interrupt filter */ devctl = brcmf_sdio_regrb(bus->sdiodev, SBSDIO_DEVICE_CTL, &err); devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; brcmf_sdio_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, devctl, &err); } /* Otherwise, wait here (polling) for HT Avail */ timeout = jiffies + msecs_to_jiffies(PMU_MAX_TRANSITION_DLY/1000); while (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { clkctl = brcmf_sdio_regrb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, &err); if (time_after(jiffies, timeout)) break; else usleep_range(5000, 10000); } if (err) { brcmf_dbg(ERROR, "HT Avail request error: %d\n", err); return -EBADE; } if (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { brcmf_dbg(ERROR, "HT Avail timeout (%d): clkctl 0x%02x\n", PMU_MAX_TRANSITION_DLY, clkctl); return -EBADE; } /* Mark clock available */ bus->clkstate = CLK_AVAIL; brcmf_dbg(INFO, "CLKCTL: turned ON\n"); #if defined(DEBUG) if (!bus->alp_only) { if (SBSDIO_ALPONLY(clkctl)) brcmf_dbg(ERROR, "HT Clock should be on\n"); } #endif /* defined (DEBUG) */ bus->activity = true; } else { clkreq = 0; if (bus->clkstate == CLK_PENDING) { /* Cancel CA-only interrupt filter */ devctl = brcmf_sdio_regrb(bus->sdiodev, SBSDIO_DEVICE_CTL, &err); devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; brcmf_sdio_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, devctl, &err); } bus->clkstate = CLK_SDONLY; brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkreq, &err); brcmf_dbg(INFO, "CLKCTL: turned OFF\n"); if (err) { brcmf_dbg(ERROR, "Failed access turning clock off: %d\n", err); return -EBADE; } } return 0; } /* Change idle/active SD state */ static int brcmf_sdbrcm_sdclk(struct brcmf_sdio *bus, bool on) { brcmf_dbg(TRACE, "Enter\n"); if (on) bus->clkstate = CLK_SDONLY; else bus->clkstate = CLK_NONE; return 0; } /* Transition SD and backplane clock readiness */ static int brcmf_sdbrcm_clkctl(struct brcmf_sdio *bus, uint target, bool pendok) { #ifdef DEBUG uint oldstate = bus->clkstate; #endif /* DEBUG */ brcmf_dbg(TRACE, "Enter\n"); /* Early exit if we're already there */ if (bus->clkstate == target) { if (target == CLK_AVAIL) { brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS); bus->activity = true; } return 0; } switch (target) { case CLK_AVAIL: /* Make sure SD clock is available */ if (bus->clkstate == CLK_NONE) brcmf_sdbrcm_sdclk(bus, true); /* Now request HT Avail on the backplane */ brcmf_sdbrcm_htclk(bus, true, pendok); brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS); bus->activity = true; break; case CLK_SDONLY: /* Remove HT request, or bring up SD clock */ if (bus->clkstate == CLK_NONE) brcmf_sdbrcm_sdclk(bus, true); else if (bus->clkstate == CLK_AVAIL) brcmf_sdbrcm_htclk(bus, false, false); else brcmf_dbg(ERROR, "request for %d -> %d\n", bus->clkstate, target); brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS); break; case CLK_NONE: /* Make sure to remove HT request */ if (bus->clkstate == CLK_AVAIL) brcmf_sdbrcm_htclk(bus, false, false); /* Now remove the SD clock */ brcmf_sdbrcm_sdclk(bus, false); brcmf_sdbrcm_wd_timer(bus, 0); break; } #ifdef DEBUG brcmf_dbg(INFO, "%d -> %d\n", oldstate, bus->clkstate); #endif /* DEBUG */ return 0; } static u32 brcmf_sdbrcm_hostmail(struct brcmf_sdio *bus) { u32 intstatus = 0; u32 hmb_data; u8 fcbits; int ret; brcmf_dbg(TRACE, "Enter\n"); /* Read mailbox data and ack that we did so */ ret = r_sdreg32(bus, &hmb_data, offsetof(struct sdpcmd_regs, tohostmailboxdata)); if (ret == 0) w_sdreg32(bus, SMB_INT_ACK, offsetof(struct sdpcmd_regs, tosbmailbox)); bus->sdcnt.f1regdata += 2; /* Dongle recomposed rx frames, accept them again */ if (hmb_data & HMB_DATA_NAKHANDLED) { brcmf_dbg(INFO, "Dongle reports NAK handled, expect rtx of %d\n", bus->rx_seq); if (!bus->rxskip) brcmf_dbg(ERROR, "unexpected NAKHANDLED!\n"); bus->rxskip = false; intstatus |= I_HMB_FRAME_IND; } /* * DEVREADY does not occur with gSPI. */ if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) { bus->sdpcm_ver = (hmb_data & HMB_DATA_VERSION_MASK) >> HMB_DATA_VERSION_SHIFT; if (bus->sdpcm_ver != SDPCM_PROT_VERSION) brcmf_dbg(ERROR, "Version mismatch, dongle reports %d, " "expecting %d\n", bus->sdpcm_ver, SDPCM_PROT_VERSION); else brcmf_dbg(INFO, "Dongle ready, protocol version %d\n", bus->sdpcm_ver); } /* * Flow Control has been moved into the RX headers and this out of band * method isn't used any more. * remaining backward compatible with older dongles. */ if (hmb_data & HMB_DATA_FC) { fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >> HMB_DATA_FCDATA_SHIFT; if (fcbits & ~bus->flowcontrol) bus->sdcnt.fc_xoff++; if (bus->flowcontrol & ~fcbits) bus->sdcnt.fc_xon++; bus->sdcnt.fc_rcvd++; bus->flowcontrol = fcbits; } /* Shouldn't be any others */ if (hmb_data & ~(HMB_DATA_DEVREADY | HMB_DATA_NAKHANDLED | HMB_DATA_FC | HMB_DATA_FWREADY | HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK)) brcmf_dbg(ERROR, "Unknown mailbox data content: 0x%02x\n", hmb_data); return intstatus; } static void brcmf_sdbrcm_rxfail(struct brcmf_sdio *bus, bool abort, bool rtx) { uint retries = 0; u16 lastrbc; u8 hi, lo; int err; brcmf_dbg(ERROR, "%sterminate frame%s\n", abort ? "abort command, " : "", rtx ? ", send NAK" : ""); if (abort) brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2); brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, SFC_RF_TERM, &err); bus->sdcnt.f1regdata++; /* Wait until the packet has been flushed (device/FIFO stable) */ for (lastrbc = retries = 0xffff; retries > 0; retries--) { hi = brcmf_sdio_regrb(bus->sdiodev, SBSDIO_FUNC1_RFRAMEBCHI, &err); lo = brcmf_sdio_regrb(bus->sdiodev, SBSDIO_FUNC1_RFRAMEBCLO, &err); bus->sdcnt.f1regdata += 2; if ((hi == 0) && (lo == 0)) break; if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) { brcmf_dbg(ERROR, "count growing: last 0x%04x now 0x%04x\n", lastrbc, (hi << 8) + lo); } lastrbc = (hi << 8) + lo; } if (!retries) brcmf_dbg(ERROR, "count never zeroed: last 0x%04x\n", lastrbc); else brcmf_dbg(INFO, "flush took %d iterations\n", 0xffff - retries); if (rtx) { bus->sdcnt.rxrtx++; err = w_sdreg32(bus, SMB_NAK, offsetof(struct sdpcmd_regs, tosbmailbox)); bus->sdcnt.f1regdata++; if (err == 0) bus->rxskip = true; } /* Clear partial in any case */ bus->nextlen = 0;