index : litmus-rt.git	archive/unc-master-3.0 archived-2013.1 archived-private-master archived-semi-part demo ecrts-pgm-final ecrts14-pgm-final gpusync-rtss12 gpusync/staging linux-tip litmus2008-patch-series master pgm prop/litmus-signals prop/robust-tie-break staging test tracing-devel v2.6.34-with-arm-patches v2015.1 wip-2011.2-bbb wip-2011.2-bbb-trace wip-2012.3-gpu wip-2012.3-gpu-preport wip-2012.3-gpu-rtss13 wip-2012.3-gpu-sobliv-budget-w-kshark wip-aedzl-final wip-aedzl-revised wip-arbit-deadline wip-aux-tasks wip-bbb wip-bbb-prio-don wip-better-break wip-binary-heap wip-budget wip-color wip-color-jlh wip-d10-hz1000 wip-default-clustering wip-dissipation-jerickso wip-dissipation2-jerickso wip-ecrts14-pgm wip-edf-hsb wip-edf-os wip-edf-tie-break wip-edzl-critique wip-edzl-final wip-edzl-revised wip-events wip-extra-debug wip-fix-switch-jerickso wip-fix3 wip-fmlp-dequeue wip-ft-irq-flag wip-gpu-cleanup wip-gpu-interrupts wip-gpu-rtas12 wip-gpu-rtss12 wip-gpu-rtss12-srp wip-gpusync-merge wip-ikglp wip-k-fmlp wip-kernel-coloring wip-kernthreads wip-klmirqd-to-aux wip-kshark wip-litmus-3.2 wip-litmus2011.2 wip-litmus3.0-2011.2 wip-master-2.6.33-rt wip-mc wip-mc-bipasa wip-mc-jerickso wip-mc2-cache-slack wip-mcrit-mac wip-merge-3.0 wip-merge-v3.0 wip-migration-affinity wip-mmap-uncache wip-modechange wip-nested-locking wip-omlp-gedf wip-pai wip-percore-lib wip-performance wip-pgm wip-pgm-split wip-pm-ovd wip-prio-inh wip-prioq-dgl wip-refactored-gedf wip-release-master-fix wip-robust-tie-break wip-rt-kshark wip-rtas12-pgm wip-semi-part wip-semi-part-edfos-jerickso wip-shared-lib wip-shared-lib2 wip-shared-mem wip-splitting-jerickso wip-splitting-omlp-jerickso wip-stage-binheap wip-sun-port wip-timer-trace wip-tracepoints
	The LITMUS^RT kernel.	Bjoern Brandenburg

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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	11 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	15 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
v2.6.27-rc6	commit adee14b2e1...	Linus Torvalds	17 years
v2.6.27-rc5	commit 24342c34a0...	Linus Torvalds	17 years
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
v2.6.26-rc8	commit 543cf4cb3f...	Linus Torvalds	17 years
v2.6.26-rc7	commit d70ac829b7...	Linus Torvalds	17 years
v2.6.26-rc6	commit 5dd34572ad...	Linus Torvalds	17 years
v2.6.26-rc5	commit 53c8ba9540...	Linus Torvalds	17 years
v2.6.26-rc4	commit e490517a03...	Linus Torvalds	17 years
v2.6.26-rc3	commit b8291ad07a...	Linus Torvalds	17 years
v2.6.26-rc2	commit 492c2e476e...	Linus Torvalds	17 years
v2.6.26-rc1	commit 2ddcca36c8...	Linus Torvalds	17 years
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
v2.6.25-rc7	commit 05dda977f2...	Linus Torvalds	17 years
v2.6.25-rc6	commit a978b30af3...	Linus Torvalds	17 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
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generated by cgit v1.2.2 (git 2.25.0) at 2025-09-09 02:06:00 -0400

/*** -*- linux-c -*- **********************************************************

     Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.

        Copyright 2000-2001 ATMEL Corporation.
        Copyright 2003-2004 Simon Kelley.

    This code was developed from version 2.1.1 of the Atmel drivers,
    released by Atmel corp. under the GPL in December 2002. It also
    includes code from the Linux aironet drivers (C) Benjamin Reed,
    and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
    extensions, (C) Jean Tourrilhes.

    The firmware module for reading the MAC address of the card comes from
    net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
    by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
    This file contains the module in binary form and, under the terms
    of the GPL, in source form. The source is located at the end of the file.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This software is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Atmel wireless lan drivers; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    For all queries about this code, please contact the current author,
    Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.

    Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
    hardware used during development of this driver.

******************************************************************************/

#include <linux/config.h>
#include <linux/init.h>

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/timer.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/if_arp.h>
#include <linux/ioport.h>
#include <linux/fcntl.h>
#include <linux/delay.h>
#include <linux/wireless.h>
#include <net/iw_handler.h>
#include <linux/byteorder/generic.h>
#include <linux/crc32.h>
#include <linux/proc_fs.h>
#include <linux/device.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
#include <net/ieee80211.h>
#include "atmel.h"

#define DRIVER_MAJOR 0
#define DRIVER_MINOR 98

MODULE_AUTHOR("Simon Kelley");
MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");

/* The name of the firmware file to be loaded
   over-rides any automatic selection */
static char *firmware = NULL;
module_param(firmware, charp, 0);

/* table of firmware file names */
static struct {
	AtmelFWType fw_type;
	const char *fw_file;
	const char *fw_file_ext;
} fw_table[] = {
	{ ATMEL_FW_TYPE_502,      "atmel_at76c502",      "bin" },
	{ ATMEL_FW_TYPE_502D,     "atmel_at76c502d",     "bin" },
	{ ATMEL_FW_TYPE_502E,     "atmel_at76c502e",     "bin" },
	{ ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
	{ ATMEL_FW_TYPE_504,      "atmel_at76c504",      "bin" },
	{ ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
	{ ATMEL_FW_TYPE_504A_2958,"atmel_at76c504a_2958","bin" },
	{ ATMEL_FW_TYPE_506,      "atmel_at76c506",      "bin" },
	{ ATMEL_FW_TYPE_NONE,      NULL,                  NULL }
};

#define MAX_SSID_LENGTH 32
#define MGMT_JIFFIES (256 * HZ / 100)

#define MAX_BSS_ENTRIES	64

/* registers */
#define GCR  0x00    //      (SIR0)  General Configuration Register
#define BSR  0x02    //      (SIR1)  Bank Switching Select Register
#define AR   0x04
#define DR   0x08
#define MR1  0x12    //      Mirror Register 1
#define MR2  0x14    //      Mirror Register 2
#define MR3  0x16    //      Mirror Register 3
#define MR4  0x18    //      Mirror Register 4

#define GPR1                            0x0c
#define GPR2                            0x0e
#define GPR3                            0x10
//
// Constants for the GCR register.
//
#define GCR_REMAP     0x0400          // Remap internal SRAM to 0
#define GCR_SWRES     0x0080          // BIU reset (ARM and PAI are NOT reset)
#define GCR_CORES     0x0060          // Core Reset (ARM and PAI are reset)
#define GCR_ENINT     0x0002          // Enable Interrupts
#define GCR_ACKINT    0x0008          // Acknowledge Interrupts

#define BSS_SRAM      0x0200          // AMBA module selection --> SRAM
#define BSS_IRAM      0x0100          // AMBA module selection --> IRAM
//
// Constants for the MR registers.
//
#define MAC_INIT_COMPLETE       0x0001        // MAC init has been completed
#define MAC_BOOT_COMPLETE       0x0010        // MAC boot has been completed
#define MAC_INIT_OK             0x0002        // MAC boot has been completed

#define MIB_MAX_DATA_BYTES    212
#define MIB_HEADER_SIZE       4    /* first four fields */

struct get_set_mib {
        u8 type;
        u8 size;
        u8 index;
        u8 reserved;
        u8 data[MIB_MAX_DATA_BYTES];
};

struct rx_desc {
        u32          Next;
        u16          MsduPos;
        u16          MsduSize;

        u8           State;
        u8           Status;
        u8           Rate;
        u8           Rssi;
        u8           LinkQuality;
        u8           PreambleType;
        u16          Duration;
        u32          RxTime;
};

#define RX_DESC_FLAG_VALID       0x80
#define RX_DESC_FLAG_CONSUMED    0x40
#define RX_DESC_FLAG_IDLE        0x00

#define RX_STATUS_SUCCESS        0x00

#define RX_DESC_MSDU_POS_OFFSET      4
#define RX_DESC_MSDU_SIZE_OFFSET     6
#define RX_DESC_FLAGS_OFFSET         8
#define RX_DESC_STATUS_OFFSET        9
#define RX_DESC_RSSI_OFFSET          11
#define RX_DESC_LINK_QUALITY_OFFSET  12
#define RX_DESC_PREAMBLE_TYPE_OFFSET 13
#define RX_DESC_DURATION_OFFSET      14
#define RX_DESC_RX_TIME_OFFSET       16

struct tx_desc {
	u32       NextDescriptor;
	u16       TxStartOfFrame;
	u16       TxLength;

	u8        TxState;
	u8        TxStatus;
	u8        RetryCount;

	u8        TxRate;

	u8        KeyIndex;
	u8        ChiperType;
	u8        ChipreLength;
        u8        Reserved1;

	u8        Reserved;
	u8        PacketType;
	u16       HostTxLength;
};

#define TX_DESC_NEXT_OFFSET          0
#define TX_DESC_POS_OFFSET           4
#define TX_DESC_SIZE_OFFSET          6
#define TX_DESC_FLAGS_OFFSET         8
#define TX_DESC_STATUS_OFFSET        9
#define TX_DESC_RETRY_OFFSET         10
#define TX_DESC_RATE_OFFSET          11
#define TX_DESC_KEY_INDEX_OFFSET     12
#define TX_DESC_CIPHER_TYPE_OFFSET   13
#define TX_DESC_CIPHER_LENGTH_OFFSET 14
#define TX_DESC_PACKET_TYPE_OFFSET   17
#define TX_DESC_HOST_LENGTH_OFFSET   18

///////////////////////////////////////////////////////
// Host-MAC interface
///////////////////////////////////////////////////////

#define TX_STATUS_SUCCESS       0x00

#define TX_FIRM_OWN             0x80
#define TX_DONE                 0x40

#define TX_ERROR                0x01

#define TX_PACKET_TYPE_DATA     0x01
#define TX_PACKET_TYPE_MGMT     0x02

#define ISR_EMPTY               0x00        // no bits set in ISR
#define ISR_TxCOMPLETE          0x01        // packet transmitted
#define ISR_RxCOMPLETE          0x02        // packet received
#define ISR_RxFRAMELOST         0x04        // Rx Frame lost
#define ISR_FATAL_ERROR         0x08        // Fatal error
#define ISR_COMMAND_COMPLETE    0x10        // command completed
#define ISR_OUT_OF_RANGE        0x20        // command completed
#define ISR_IBSS_MERGE          0x40        // (4.1.2.30): IBSS merge
#define ISR_GENERIC_IRQ         0x80

#define Local_Mib_Type          0x01
#define Mac_Address_Mib_Type    0x02
#define Mac_Mib_Type            0x03
#define Statistics_Mib_Type     0x04
#define Mac_Mgmt_Mib_Type       0x05
#define Mac_Wep_Mib_Type        0x06
#define Phy_Mib_Type            0x07
#define Multi_Domain_MIB        0x08

#define MAC_MGMT_MIB_CUR_BSSID_POS            14
#define MAC_MIB_FRAG_THRESHOLD_POS            8
#define MAC_MIB_RTS_THRESHOLD_POS             10
#define MAC_MIB_SHORT_RETRY_POS               16
#define MAC_MIB_LONG_RETRY_POS                17
#define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
#define MAC_MGMT_MIB_BEACON_PER_POS           0
#define MAC_MGMT_MIB_STATION_ID_POS           6
#define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
#define MAC_MGMT_MIB_CUR_BSSID_POS            14
#define MAC_MGMT_MIB_PS_MODE_POS              53
#define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
#define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
#define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
#define PHY_MIB_CHANNEL_POS                   14
#define PHY_MIB_RATE_SET_POS                  20
#define PHY_MIB_REG_DOMAIN_POS                26
#define LOCAL_MIB_AUTO_TX_RATE_POS            3
#define LOCAL_MIB_SSID_SIZE                   5
#define LOCAL_MIB_TX_PROMISCUOUS_POS          6
#define LOCAL_MIB_TX_MGMT_RATE_POS            7
#define LOCAL_MIB_TX_CONTROL_RATE_POS         8
#define LOCAL_MIB_PREAMBLE_TYPE               9
#define MAC_ADDR_MIB_MAC_ADDR_POS             0

#define         CMD_Set_MIB_Vars              0x01
#define         CMD_Get_MIB_Vars              0x02
#define         CMD_Scan                      0x03
#define         CMD_Join                      0x04
#define         CMD_Start                     0x05
#define         CMD_EnableRadio               0x06
#define         CMD_DisableRadio              0x07
#define         CMD_SiteSurvey                0x0B

#define         CMD_STATUS_IDLE                   0x00
#define         CMD_STATUS_COMPLETE               0x01
#define         CMD_STATUS_UNKNOWN                0x02
#define         CMD_STATUS_INVALID_PARAMETER      0x03
#define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
#define         CMD_STATUS_TIME_OUT               0x07
#define         CMD_STATUS_IN_PROGRESS            0x08
#define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
#define         CMD_STATUS_HOST_ERROR             0xFF
#define         CMD_STATUS_BUSY                   0xFE

#define CMD_BLOCK_COMMAND_OFFSET        0
#define CMD_BLOCK_STATUS_OFFSET         1
#define CMD_BLOCK_PARAMETERS_OFFSET     4

#define SCAN_OPTIONS_SITE_SURVEY        0x80

#define MGMT_FRAME_BODY_OFFSET		24
#define MAX_AUTHENTICATION_RETRIES	3
#define MAX_ASSOCIATION_RETRIES		3

#define AUTHENTICATION_RESPONSE_TIME_OUT  1000

#define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
#define LOOP_RETRY_LIMIT   500000

#define ACTIVE_MODE	1
#define PS_MODE		2

#define MAX_ENCRYPTION_KEYS 4
#define MAX_ENCRYPTION_KEY_SIZE 40

///////////////////////////////////////////////////////////////////////////
// 802.11 related definitions
///////////////////////////////////////////////////////////////////////////

//
// Regulatory Domains
//

#define REG_DOMAIN_FCC		0x10	//Channels	1-11	USA
#define REG_DOMAIN_DOC		0x20	//Channel	1-11	Canada
#define REG_DOMAIN_ETSI		0x30	//Channel	1-13	Europe (ex Spain/France)
#define REG_DOMAIN_SPAIN	0x31	//Channel	10-11	Spain
#define REG_DOMAIN_FRANCE	0x32	//Channel	10-13	France
#define REG_DOMAIN_MKK		0x40	//Channel	14	Japan
#define REG_DOMAIN_MKK1		0x41	//Channel	1-14	Japan(MKK1)
#define REG_DOMAIN_ISRAEL	0x50	//Channel	3-9	ISRAEL

#define BSS_TYPE_AD_HOC		1
#define BSS_TYPE_INFRASTRUCTURE 2

#define SCAN_TYPE_ACTIVE	0
#define SCAN_TYPE_PASSIVE	1

#define LONG_PREAMBLE		0
#define SHORT_PREAMBLE		1
#define AUTO_PREAMBLE		2

#define DATA_FRAME_WS_HEADER_SIZE   30

/* promiscuous mode control */
#define PROM_MODE_OFF			0x0
#define PROM_MODE_UNKNOWN		0x1
#define PROM_MODE_CRC_FAILED		0x2
#define PROM_MODE_DUPLICATED		0x4
#define PROM_MODE_MGMT			0x8
#define PROM_MODE_CTRL			0x10
#define PROM_MODE_BAD_PROTOCOL		0x20

#define IFACE_INT_STATUS_OFFSET		0
#define IFACE_INT_MASK_OFFSET		1
#define IFACE_LOCKOUT_HOST_OFFSET	2
#define IFACE_LOCKOUT_MAC_OFFSET	3
#define IFACE_FUNC_CTRL_OFFSET		28
#define IFACE_MAC_STAT_OFFSET		30
#define IFACE_GENERIC_INT_TYPE_OFFSET	32

#define CIPHER_SUITE_NONE     0
#define CIPHER_SUITE_WEP_64   1
#define CIPHER_SUITE_TKIP     2
#define CIPHER_SUITE_AES      3
#define CIPHER_SUITE_CCX      4
#define CIPHER_SUITE_WEP_128  5

//
// IFACE MACROS & definitions
//
//

// FuncCtrl field:
//
#define FUNC_CTRL_TxENABLE		0x10
#define FUNC_CTRL_RxENABLE		0x20
#define FUNC_CTRL_INIT_COMPLETE		0x01

/* A stub firmware image which reads the MAC address from NVRAM on the card.
   For copyright information and source see the end of this file. */
static u8 mac_reader[] = {
	0x06,0x00,0x00,0xea,0x04,0x00,0x00,0xea,0x03,0x00,0x00,0xea,0x02,0x00,0x00,0xea,
	0x01,0x00,0x00,0xea,0x00,0x00,0x00,0xea,0xff,0xff,0xff,0xea,0xfe,0xff,0xff,0xea,
	0xd3,0x00,0xa0,0xe3,0x00,0xf0,0x21,0xe1,0x0e,0x04,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
	0x81,0x11,0xa0,0xe1,0x00,0x10,0x81,0xe3,0x00,0x10,0x80,0xe5,0x1c,0x10,0x90,0xe5,
	0x10,0x10,0xc1,0xe3,0x1c,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,0x08,0x10,0x80,0xe5,
	0x02,0x03,0xa0,0xe3,0x00,0x10,0xa0,0xe3,0xb0,0x10,0xc0,0xe1,0xb4,0x10,0xc0,0xe1,
	0xb8,0x10,0xc0,0xe1,0xbc,0x10,0xc0,0xe1,0x56,0xdc,0xa0,0xe3,0x21,0x00,0x00,0xeb,
	0x0a,0x00,0xa0,0xe3,0x1a,0x00,0x00,0xeb,0x10,0x00,0x00,0xeb,0x07,0x00,0x00,0xeb,
	0x02,0x03,0xa0,0xe3,0x02,0x14,0xa0,0xe3,0xb4,0x10,0xc0,0xe1,0x4c,0x10,0x9f,0xe5,
	0xbc,0x10,0xc0,0xe1,0x10,0x10,0xa0,0xe3,0xb8,0x10,0xc0,0xe1,0xfe,0xff,0xff,0xea,
	0x00,0x40,0x2d,0xe9,0x00,0x20,0xa0,0xe3,0x02,0x3c,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
	0x28,0x00,0x9f,0xe5,0x37,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
	0x00,0x40,0x2d,0xe9,0x12,0x2e,0xa0,0xe3,0x06,0x30,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
	0x02,0x04,0xa0,0xe3,0x2f,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
	0x00,0x02,0x00,0x02,0x80,0x01,0x90,0xe0,0x01,0x00,0x00,0x0a,0x01,0x00,0x50,0xe2,
	0xfc,0xff,0xff,0xea,0x1e,0xff,0x2f,0xe1,0x80,0x10,0xa0,0xe3,0xf3,0x06,0xa0,0xe3,
	0x00,0x10,0x80,0xe5,0x00,0x10,0xa0,0xe3,0x00,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,
	0x04,0x10,0x80,0xe5,0x00,0x10,0x80,0xe5,0x0e,0x34,0xa0,0xe3,0x1c,0x10,0x93,0xe5,
	0x02,0x1a,0x81,0xe3,0x1c,0x10,0x83,0xe5,0x58,0x11,0x9f,0xe5,0x30,0x10,0x80,0xe5,
	0x54,0x11,0x9f,0xe5,0x34,0x10,0x80,0xe5,0x38,0x10,0x80,0xe5,0x3c,0x10,0x80,0xe5,
	0x10,0x10,0x90,0xe5,0x08,0x00,0x90,0xe5,0x1e,0xff,0x2f,0xe1,0xf3,0x16,0xa0,0xe3,
	0x08,0x00,0x91,0xe5,0x05,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,0x10,0x00,0x91,0xe5,
	0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0xff,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,
	0x10,0x00,0x91,0xe5,0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
	0x10,0x00,0x91,0xe5,0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
	0xff,0x00,0x00,0xe2,0x1e,0xff,0x2f,0xe1,0x30,0x40,0x2d,0xe9,0x00,0x50,0xa0,0xe1,
	0x03,0x40,0xa0,0xe1,0xa2,0x02,0xa0,0xe1,0x08,0x00,0x00,0xe2,0x03,0x00,0x80,0xe2,
	0xd8,0x10,0x9f,0xe5,0x00,0x00,0xc1,0xe5,0x01,0x20,0xc1,0xe5,0xe2,0xff,0xff,0xeb,
	0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x1a,0x14,0x00,0xa0,0xe3,0xc4,0xff,0xff,0xeb,
	0x04,0x20,0xa0,0xe1,0x05,0x10,0xa0,0xe1,0x02,0x00,0xa0,0xe3,0x01,0x00,0x00,0xeb,
	0x30,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x70,0x40,0x2d,0xe9,0xf3,0x46,0xa0,0xe3,
	0x00,0x30,0xa0,0xe3,0x00,0x00,0x50,0xe3,0x08,0x00,0x00,0x9a,0x8c,0x50,0x9f,0xe5,
	0x03,0x60,0xd5,0xe7,0x0c,0x60,0x84,0xe5,0x10,0x60,0x94,0xe5,0x02,0x00,0x16,0xe3,
	0xfc,0xff,0xff,0x0a,0x01,0x30,0x83,0xe2,0x00,0x00,0x53,0xe1,0xf7,0xff,0xff,0x3a,
	0xff,0x30,0xa0,0xe3,0x0c,0x30,0x84,0xe5,0x08,0x00,0x94,0xe5,0x10,0x00,0x94,0xe5,
	0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x94,0xe5,0x00,0x00,0xa0,0xe3,
	0x00,0x00,0x52,0xe3,0x0b,0x00,0x00,0x9a,0x10,0x50,0x94,0xe5,0x02,0x00,0x15,0xe3,
	0xfc,0xff,0xff,0x0a,0x0c,0x30,0x84,0xe5,0x10,0x50,0x94,0xe5,0x01,0x00,0x15,0xe3,
	0xfc,0xff,0xff,0x0a,0x08,0x50,0x94,0xe5,0x01,0x50,0xc1,0xe4,0x01,0x00,0x80,0xe2,
	0x02,0x00,0x50,0xe1,0xf3,0xff,0xff,0x3a,0xc8,0x00,0xa0,0xe3,0x98,0xff,0xff,0xeb,
	0x70,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x01,0x0c,0x00,0x02,0x01,0x02,0x00,0x02,
	0x00,0x01,0x00,0x02
};

struct atmel_private {
	void *card; /* Bus dependent stucture varies for PCcard */
	int (*present_callback)(void *); /* And callback which uses it */
	char firmware_id[32];
	AtmelFWType firmware_type;
	u8 *firmware;
	int firmware_length;
	struct timer_list management_timer;
	struct net_device *dev;
	struct device *sys_dev;
	struct iw_statistics wstats;
	struct net_device_stats	stats;	// device stats
	spinlock_t irqlock, timerlock;	// spinlocks
	enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
	enum {
		CARD_TYPE_PARALLEL_FLASH,
		CARD_TYPE_SPI_FLASH,
		CARD_TYPE_EEPROM
	} card_type;
	int do_rx_crc; /* If we need to CRC incoming packets */
	int probe_crc; /* set if we don't yet know */
	int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
	u16 rx_desc_head;
	u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
	u16 tx_free_mem, tx_buff_head, tx_buff_tail;

	u16 frag_seq, frag_len, frag_no;
	u8 frag_source[6];

	u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
	u8 group_cipher_suite, pairwise_cipher_suite;
	u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
	int wep_key_len[MAX_ENCRYPTION_KEYS];
	int use_wpa, radio_on_broken; /* firmware dependent stuff. */

	u16 host_info_base;
	struct host_info_struct {
		/* NB this is matched to the hardware, don't change. */
		u8 volatile int_status;
		u8 volatile int_mask;
		u8 volatile lockout_host;
		u8 volatile lockout_mac;

		u16 tx_buff_pos;
		u16 tx_buff_size;
		u16 tx_desc_pos;
		u16 tx_desc_count;

		u16 rx_buff_pos;
		u16 rx_buff_size;
		u16 rx_desc_pos;
		u16 rx_desc_count;

		u16 build_version;
		u16 command_pos;

		u16 major_version;
		u16 minor_version;

		u16 func_ctrl;
		u16 mac_status;
		u16 generic_IRQ_type;
		u8  reserved[2];
	} host_info;

	enum {
		STATION_STATE_SCANNING,
		STATION_STATE_JOINNING,
		STATION_STATE_AUTHENTICATING,
		STATION_STATE_ASSOCIATING,
		STATION_STATE_READY,
		STATION_STATE_REASSOCIATING,
		STATION_STATE_DOWN,
		STATION_STATE_MGMT_ERROR
	} station_state;

	int operating_mode, power_mode;
	time_t last_qual;
	int beacons_this_sec;
	int channel;
	int reg_domain, config_reg_domain;
	int tx_rate;
	int auto_tx_rate;
	int rts_threshold;
	int frag_threshold;
	int long_retry, short_retry;
	int preamble;
	int default_beacon_period, beacon_period, listen_interval;
	int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
	int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
	enum {
		SITE_SURVEY_IDLE,
		SITE_SURVEY_IN_PROGRESS,
		SITE_SURVEY_COMPLETED
	} site_survey_state;
	time_t last_survey;

	int station_was_associated, station_is_associated;
	int fast_scan;

	struct bss_info {
		int channel;
		int SSIDsize;
		int RSSI;
		int UsingWEP;
		int preamble;
		int beacon_period;
		int BSStype;
		u8 BSSID[6];
		u8 SSID[MAX_SSID_LENGTH];
	} BSSinfo[MAX_BSS_ENTRIES];
	int BSS_list_entries, current_BSS;
	int connect_to_any_BSS;
	int SSID_size, new_SSID_size;
	u8 CurrentBSSID[6], BSSID[6];
	u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
	u64 last_beacon_timestamp;
	u8 rx_buf[MAX_WIRELESS_BODY];
};

static u8 atmel_basic_rates[4] = {0x82,0x84,0x0b,0x16};

static const struct {
	int reg_domain;
	int min, max;
	char *name;
} channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
		      { REG_DOMAIN_DOC, 1, 11, "Canada" },
		      { REG_DOMAIN_ETSI, 1, 13, "Europe" },
		      { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
		      { REG_DOMAIN_FRANCE, 10, 13, "France" },
		      { REG_DOMAIN_MKK, 14, 14, "MKK" },
		      { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
		      { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };

static void build_wpa_mib(struct atmel_private *priv);
static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static void atmel_copy_to_card(struct net_device *dev, u16 dest,
			       unsigned char *src, u16 len);
static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
			       u16 src, u16 len);
static void atmel_set_gcr(struct net_device *dev, u16 mask);
static void atmel_clear_gcr(struct net_device *dev, u16 mask);
static int atmel_lock_mac(struct atmel_private *priv);
static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
static void atmel_command_irq(struct atmel_private *priv);
static int atmel_validate_channel(struct atmel_private *priv, int channel);
static void atmel_management_frame(struct atmel_private *priv,
				   struct ieee80211_hdr_4addr *header,
				   u16 frame_len, u8 rssi);
static void atmel_management_timer(u_long a);
static void atmel_send_command(struct atmel_private *priv, int command,
			       void *cmd, int cmd_size);
static int atmel_send_command_wait(struct atmel_private *priv, int command,
				   void *cmd, int cmd_size);
static void atmel_transmit_management_frame(struct atmel_private *priv,
					    struct ieee80211_hdr_4addr *header,
					    u8 *body, int body_len);

static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
			   u8 data);
static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
			    u16 data);
static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
			  u8 *data, int data_len);
static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
			  u8 *data, int data_len);
static void atmel_scan(struct atmel_private *priv, int specific_ssid);
static void atmel_join_bss(struct atmel_private *priv, int bss_index);
static void atmel_smooth_qual(struct atmel_private *priv);
static void atmel_writeAR(struct net_device *dev, u16 data);
static int probe_atmel_card(struct net_device *dev);
static int reset_atmel_card(struct net_device *dev );
static void atmel_enter_state(struct atmel_private *priv, int new_state);
int atmel_open (struct net_device *dev);

static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
{
	return priv->host_info_base + offset;
}

static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
{
	return priv->host_info.command_pos + offset;
}

static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
{
	return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
}

static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
{
	return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
}

static inline u8 atmel_read8(struct net_device *dev, u16 offset)
{
	return inb(dev->base_addr + offset);
}

static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
{
	outb(data, dev->base_addr + offset);
}

static inline u16 atmel_read16(struct net_device *dev, u16 offset)
{
	return inw(dev->base_addr + offset);
}

static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
{
	outw(data, dev->base_addr + offset);
}

static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
{
	atmel_writeAR(priv->dev, pos);
	return atmel_read8(priv->dev, DR);
}

static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
{
	atmel_writeAR(priv->dev, pos);
	atmel_write8(priv->dev, DR, data);
}

static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
{
	atmel_writeAR(priv->dev, pos);
	return atmel_read16(priv->dev, DR);
}

static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
{
	atmel_writeAR(priv->dev, pos);
	atmel_write16(priv->dev, DR, data);
}

static const struct iw_handler_def atmel_handler_def;

static void tx_done_irq(struct atmel_private *priv)
{
	int i;

	for (i = 0;
	     atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
		     i < priv->host_info.tx_desc_count;
	     i++) {
		u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
		u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
		u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));

		atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);

		priv->tx_free_mem += msdu_size;
		priv->tx_desc_free++;

		if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
			priv->tx_buff_head = 0;
		else
			priv->tx_buff_head += msdu_size;

		if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
			priv->tx_desc_head++ ;
		else
			priv->tx_desc_head = 0;

		if (type == TX_PACKET_TYPE_DATA) {
			if (status == TX_STATUS_SUCCESS)
				priv->stats.tx_packets++;
			else
				priv->stats.tx_errors++;
			netif_wake_queue(priv->dev);
		}
	}
}

static u16 find_tx_buff(struct atmel_private *priv, u16 len)
{
	u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;

	if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
		return 0;

	if (bottom_free >= len)
		return priv->host_info.tx_buff_pos + priv->tx_buff_tail;

	if (priv->tx_free_mem - bottom_free >= len) {
		priv->tx_buff_tail = 0;
		return priv->host_info.tx_buff_pos;
	}

	return 0;
}

static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
				 u16 len, u16 buff, u8 type)
{
	atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
	atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
	if (!priv->use_wpa)
		atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
	atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
	atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
	atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
	if (priv->use_wpa) {
		int cipher_type, cipher_length;
		if (is_bcast) {
			cipher_type = priv->group_cipher_suite;
			if (cipher_type == CIPHER_SUITE_WEP_64 ||
			    cipher_type == CIPHER_SUITE_WEP_128)
				cipher_length = 8;
			else if (cipher_type == CIPHER_SUITE_TKIP)
				cipher_length = 12;
			else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
				 priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
				cipher_type = priv->pairwise_cipher_suite;
				cipher_length = 8;
			} else {
				cipher_type = CIPHER_SUITE_NONE;
				cipher_length = 0;
			}
		} else {
			cipher_type = priv->pairwise_cipher_suite;
			if (cipher_type == CIPHER_SUITE_WEP_64 ||
			    cipher_type == CIPHER_SUITE_WEP_128)
				cipher_length = 8;
			else if (cipher_type == CIPHER_SUITE_TKIP)
				cipher_length = 12;
			else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
				 priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
				cipher_type = priv->group_cipher_suite;
				cipher_length = 8;
			} else {
				cipher_type = CIPHER_SUITE_NONE;
				cipher_length = 0;
			}
		}

		atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
			    cipher_type);
		atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
			    cipher_length);
	}
	atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
	atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
	if (priv->tx_desc_previous != priv->tx_desc_tail)
		atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
	priv->tx_desc_previous = priv->tx_desc_tail;
	if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
		priv->tx_desc_tail++;
	else
		priv->tx_desc_tail = 0;
	priv->tx_desc_free--;
	priv->tx_free_mem -= len;
}

static int start_tx(struct sk_buff *skb, struct net_device *dev)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct ieee80211_hdr_4addr header;
	unsigned long flags;
	u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
	u8 SNAP_RFC1024[6] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};

	if (priv->card && priv->present_callback &&
	    !(*priv->present_callback)(priv->card)) {
		priv->stats.tx_errors++;
		dev_kfree_skb(skb);
		return 0;
	}

	if (priv->station_state != STATION_STATE_READY) {
		priv->stats.tx_errors++;
		dev_kfree_skb(skb);
		return 0;
	}

	/* first ensure the timer func cannot run */
	spin_lock_bh(&priv->timerlock);
	/* then stop the hardware ISR */
	spin_lock_irqsave(&priv->irqlock, flags);
	/* nb doing the above in the opposite order will deadlock */

	/* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
	   12 first bytes (containing DA/SA) and put them in the appropriate
	   fields of the Wireless Header. Thus the packet length is then the
	   initial + 18 (+30-12) */

	if (!(buff = find_tx_buff(priv, len + 18))) {
		priv->stats.tx_dropped++;
		spin_unlock_irqrestore(&priv->irqlock, flags);
		spin_unlock_bh(&priv->timerlock);
		netif_stop_queue(dev);
		return 1;
	}

	frame_ctl = IEEE80211_FTYPE_DATA;
	header.duration_id = 0;
	header.seq_ctl = 0;
	if (priv->wep_is_on)
		frame_ctl |= IEEE80211_FCTL_PROTECTED;
	if (priv->operating_mode == IW_MODE_ADHOC) {
		memcpy(&header.addr1, skb->data, 6);
		memcpy(&header.addr2, dev->dev_addr, 6);
		memcpy(&header.addr3, priv->BSSID, 6);
	} else {
		frame_ctl |= IEEE80211_FCTL_TODS;
		memcpy(&header.addr1, priv->CurrentBSSID, 6);
		memcpy(&header.addr2, dev->dev_addr, 6);
		memcpy(&header.addr3, skb->data, 6);
	}

	if (priv->use_wpa)
		memcpy(&header.addr4, SNAP_RFC1024, 6);

	header.frame_ctl = cpu_to_le16(frame_ctl);
	/* Copy the wireless header into the card */
	atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
	/* Copy the packet sans its 802.3 header addresses which have been replaced */
	atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
	priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;

	/* low bit of first byte of destination tells us if broadcast */
	tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
	dev->trans_start = jiffies;
	priv->stats.tx_bytes += len;

	spin_unlock_irqrestore(&priv->irqlock, flags);
	spin_unlock_bh(&priv->timerlock);
	dev_kfree_skb(skb);

	return 0;
}

static void atmel_transmit_management_frame(struct atmel_private *priv,
					    struct ieee80211_hdr_4addr *header,
					    u8 *body, int body_len)
{
	u16 buff;
	int len = MGMT_FRAME_BODY_OFFSET + body_len;

	if (!(buff = find_tx_buff(priv, len)))
		return;

	atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
	atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
	priv->tx_buff_tail += len;
	tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
}

static void fast_rx_path(struct atmel_private *priv,
			 struct ieee80211_hdr_4addr *header,
			 u16 msdu_size, u16 rx_packet_loc, u32 crc)
{
	/* fast path: unfragmented packet copy directly into skbuf */
	u8 mac4[6];
	struct sk_buff	*skb;
	unsigned char *skbp;

	/* get the final, mac 4 header field, this tells us encapsulation */
	atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
	msdu_size -= 6;

	if (priv->do_rx_crc) {
		crc = crc32_le(crc, mac4, 6);
		msdu_size -= 4;
	}

	if (!(skb = dev_alloc_skb(msdu_size + 14))) {
		priv->stats.rx_dropped++;
		return;
	}

	skb_reserve(skb, 2);
	skbp = skb_put(skb, msdu_size + 12);
	atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);

	if (priv->do_rx_crc) {
		u32 netcrc;
		crc = crc32_le(crc, skbp + 12, msdu_size);
		atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
		if ((crc ^ 0xffffffff) != netcrc) {
			priv->stats.rx_crc_errors++;
			dev_kfree_skb(skb);
			return;
		}
	}

	memcpy(skbp, header->addr1, 6); /* destination address */
	if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
		memcpy(&skbp[6], header->addr3, 6);
	else
		memcpy(&skbp[6], header->addr2, 6); /* source address */

	priv->dev->last_rx = jiffies;
	skb->dev = priv->dev;
	skb->protocol = eth_type_trans(skb, priv->dev);
	skb->ip_summed = CHECKSUM_NONE;
	netif_rx(skb);
	priv->stats.rx_bytes += 12 + msdu_size;
	priv->stats.rx_packets++;
}

/* Test to see if the packet in card memory at packet_loc has a valid CRC
   It doesn't matter that this is slow: it is only used to proble the first few
   packets. */
static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
{
	int i = msdu_size - 4;
	u32 netcrc, crc = 0xffffffff;

	if (msdu_size < 4)
		return 0;

	atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);

	atmel_writeAR(priv->dev, packet_loc);
	while (i--) {
		u8 octet = atmel_read8(priv->dev, DR);
		crc = crc32_le(crc, &octet, 1);
	}

	return (crc ^ 0xffffffff) == netcrc;
}

static void frag_rx_path(struct atmel_private *priv,
			 struct ieee80211_hdr_4addr *header,
			 u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
			 u8 frag_no, int more_frags)
{
	u8 mac4[6];
	u8 source[6];
	struct sk_buff *skb;

	if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
		memcpy(source, header->addr3, 6);
	else
		memcpy(source, header->addr2, 6);

	rx_packet_loc += 24; /* skip header */

	if (priv->do_rx_crc)
		msdu_size -= 4;

	if (frag_no == 0) { /* first fragment */
		atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
		msdu_size -= 6;
		rx_packet_loc += 6;

		if (priv->do_rx_crc)
			crc = crc32_le(crc, mac4, 6);

		priv->frag_seq = seq_no;
		priv->frag_no = 1;
		priv->frag_len = msdu_size;
		memcpy(priv->frag_source, source, 6);
		memcpy(&priv->rx_buf[6], source, 6);
		memcpy(priv->rx_buf, header->addr1, 6);

		atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);

		if (priv->do_rx_crc) {
			u32 netcrc;
			crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
			atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
			if ((crc ^ 0xffffffff) != netcrc) {
				priv->stats.rx_crc_errors++;
				memset(priv->frag_source, 0xff, 6);
			}
		}

	} else if (priv->frag_no == frag_no &&
		   priv->frag_seq == seq_no &&
		   memcmp(priv->frag_source, source, 6) == 0) {

		atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
				   rx_packet_loc, msdu_size);
		if (priv->do_rx_crc) {
			u32 netcrc;
			crc = crc32_le(crc,
				       &priv->rx_buf[12 + priv->frag_len],
				       msdu_size);
			atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
			if ((crc ^ 0xffffffff) != netcrc) {
				priv->stats.rx_crc_errors++;
				memset(priv->frag_source, 0xff, 6);
				more_frags = 1; /* don't send broken assembly */
			}
		}

		priv->frag_len += msdu_size;
		priv->frag_no++;

		if (!more_frags) { /* last one */
			memset(priv->frag_source, 0xff, 6);
			if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
				priv->stats.rx_dropped++;
			} else {
				skb_reserve(skb, 2);
				memcpy(skb_put(skb, priv->frag_len + 12),
				       priv->rx_buf,
				       priv->frag_len + 12);
				priv->dev->last_rx = jiffies;
				skb->dev = priv->dev;
				skb->protocol = eth_type_trans(skb, priv->dev);
				skb->ip_summed = CHECKSUM_NONE;
				netif_rx(skb);
				priv->stats.rx_bytes += priv->frag_len + 12;
				priv->stats.rx_packets++;
			}
		}
	} else
		priv->wstats.discard.fragment++;
}

static void rx_done_irq(struct atmel_private *priv)
{
	int i;
	struct ieee80211_hdr_4addr header;

	for (i = 0;
	     atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
		     i < priv->host_info.rx_desc_count;
	     i++) {

		u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
		u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
		u32 crc = 0xffffffff;

		if (status != RX_STATUS_SUCCESS) {
			if (status == 0xc1) /* determined by experiment */
				priv->wstats.discard.nwid++;
			else
				priv->stats.rx_errors++;
			goto next;
		}

		msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
		rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));

		if (msdu_size < 30) {
			priv->stats.rx_errors++;
			goto next;
		}

		/* Get header as far as end of seq_ctl */
		atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
		frame_ctl = le16_to_cpu(header.frame_ctl);
		seq_control = le16_to_cpu(header.seq_ctl);

		/* probe for CRC use here if needed  once five packets have
		   arrived with the same crc status, we assume we know what's
		   happening and stop probing */
		if (priv->probe_crc) {
			if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
				priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
			} else {
				priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
			}
			if (priv->do_rx_crc) {
				if (priv->crc_ok_cnt++ > 5)
					priv->probe_crc = 0;
			} else {
				if (priv->crc_ko_cnt++ > 5)
					priv->probe_crc = 0;
			}
		}

		/* don't CRC header when WEP in use */
		if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
			crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
		}
		msdu_size -= 24; /* header */

		if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
			int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
			u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
			u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;

			if (!more_fragments && packet_fragment_no == 0) {
				fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
			} else {
				frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
					     packet_sequence_no, packet_fragment_no, more_fragments);
			}
		}

		if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
			/* copy rest of packet into buffer */
			atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);

			/* we use the same buffer for frag reassembly and control packets */
			memset(priv->frag_source, 0xff, 6);

			if (priv->do_rx_crc) {
				/* last 4 octets is crc */
				msdu_size -= 4;
				crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
				if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
					priv->stats.rx_crc_errors++;
					goto next;
				}
			}

			atmel_management_frame(priv, &header, msdu_size,
					       atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
		}

next:
		/* release descriptor */
		atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);

		if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
			priv->rx_desc_head++;
		else
			priv->rx_desc_head = 0;
	}
}

static irqreturn_t service_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
	struct net_device *dev = (struct net_device *) dev_id;
	struct atmel_private *priv = netdev_priv(dev);
	u8 isr;
	int i = -1;
	static u8 irq_order[] = {
		ISR_OUT_OF_RANGE,
		ISR_RxCOMPLETE,
		ISR_TxCOMPLETE,
		ISR_RxFRAMELOST,
		ISR_FATAL_ERROR,
		ISR_COMMAND_COMPLETE,
		ISR_IBSS_MERGE,
		ISR_GENERIC_IRQ
	};

	if (priv->card && priv->present_callback &&
	    !(*priv->present_callback)(priv->card))
		return IRQ_HANDLED;

	/* In this state upper-level code assumes it can mess with
	   the card unhampered by interrupts which may change register state.
	   Note that even though the card shouldn't generate interrupts
	   the inturrupt line may be shared. This allows card setup
	   to go on without disabling interrupts for a long time. */
	if (priv->station_state == STATION_STATE_DOWN)
		return IRQ_NONE;

	atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */

	while (1) {
		if (!atmel_lock_mac(priv)) {
			/* failed to contact card */
			printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
			return IRQ_HANDLED;
		}

		isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
		atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);

		if (!isr) {
			atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
			return i == -1 ? IRQ_NONE : IRQ_HANDLED;
		}

		atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */

		for (i = 0; i < sizeof(irq_order)/sizeof(u8); i++)
			if (isr & irq_order[i])
				break;

		if (!atmel_lock_mac(priv)) {
			/* failed to contact card */
			printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
			return IRQ_HANDLED;
		}

		isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
		isr ^= irq_order[i];
		atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
		atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);

		switch (irq_order[i]) {

		case ISR_OUT_OF_RANGE:
			if (priv->operating_mode == IW_MODE_INFRA &&
			    priv->station_state == STATION_STATE_READY) {
				priv->station_is_associated = 0;
				atmel_scan(priv, 1);
			}
			break;

		case ISR_RxFRAMELOST:
			priv->wstats.discard.misc++;
			/* fall through */
		case ISR_RxCOMPLETE:
			rx_done_irq(priv);
			break;

		case ISR_TxCOMPLETE:
			tx_done_irq(priv);
			break;

		case ISR_FATAL_ERROR:
			printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
			atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
			break;

		case ISR_COMMAND_COMPLETE:
			atmel_command_irq(priv);
			break;

		case ISR_IBSS_MERGE:
			atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
				      priv->CurrentBSSID, 6);
			/* The WPA stuff cares about the current AP address */
			if (priv->use_wpa)
				build_wpa_mib(priv);
			break;
		case ISR_GENERIC_IRQ:
			printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
			break;
		}
	}
}

static struct net_device_stats *atmel_get_stats(struct net_device *dev)
{
	struct atmel_private *priv = netdev_priv(dev);
	return &priv->stats;
}

static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* update the link quality here in case we are seeing no beacons
	   at all to drive the process */
	atmel_smooth_qual(priv);

	priv->wstats.status = priv->station_state;

	if (priv->operating_mode == IW_MODE_INFRA) {
		if (priv->station_state != STATION_STATE_READY) {
			priv->wstats.qual.qual = 0;
			priv->wstats.qual.level = 0;
			priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
					| IW_QUAL_LEVEL_INVALID);
		}
		priv->wstats.qual.noise = 0;
		priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
	} else {
		/* Quality levels cannot be determined in ad-hoc mode,
		   because we can 'hear' more that one remote station. */
		priv->wstats.qual.qual = 0;
		priv->wstats.qual.level	= 0;
		priv->wstats.qual.noise	= 0;
		priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
					| IW_QUAL_LEVEL_INVALID
					| IW_QUAL_NOISE_INVALID;
		priv->wstats.miss.beacon = 0;
	}

	return &priv->wstats;
}

static int atmel_change_mtu(struct net_device *dev, int new_mtu)
{
        if ((new_mtu < 68) || (new_mtu > 2312))
                return -EINVAL;
        dev->mtu = new_mtu;
        return 0;
}

static int atmel_set_mac_address(struct net_device *dev, void *p)
{
	struct sockaddr *addr = p;

        memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
	return atmel_open(dev);
}

EXPORT_SYMBOL(atmel_open);

int atmel_open(struct net_device *dev)
{
	struct atmel_private *priv = netdev_priv(dev);
	int i, channel;

	/* any scheduled timer is no longer needed and might screw things up.. */
	del_timer_sync(&priv->management_timer);

	/* Interrupts will not touch the card once in this state... */
	priv->station_state = STATION_STATE_DOWN;

	if (priv->new_SSID_size) {
		memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
		priv->SSID_size = priv->new_SSID_size;
		priv->new_SSID_size = 0;
	}
	priv->BSS_list_entries = 0;

	priv->AuthenticationRequestRetryCnt = 0;
	priv->AssociationRequestRetryCnt = 0;
	priv->ReAssociationRequestRetryCnt = 0;
	priv->CurrentAuthentTransactionSeqNum = 0x0001;
	priv->ExpectedAuthentTransactionSeqNum = 0x0002;

	priv->site_survey_state = SITE_SURVEY_IDLE;
	priv->station_is_associated = 0;

	if (!reset_atmel_card(dev))
		return -EAGAIN;

	if (priv->config_reg_domain) {
		priv->reg_domain = priv->config_reg_domain;
		atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
	} else {
		priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
		for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
			if (priv->reg_domain == channel_table[i].reg_domain)
				break;
		if (i == sizeof(channel_table)/sizeof(channel_table[0])) {
			priv->reg_domain = REG_DOMAIN_MKK1;
			printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
		}
	}

	if ((channel = atmel_validate_channel(priv, priv->channel)))
		priv->channel = channel;

	/* this moves station_state on.... */
	atmel_scan(priv, 1);

	atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
	return 0;
}

static int atmel_close(struct net_device *dev)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* Send event to userspace that we are disassociating */
	if (priv->station_state == STATION_STATE_READY) {
		union iwreq_data wrqu;

		wrqu.data.length = 0;
		wrqu.data.flags = 0;
		wrqu.ap_addr.sa_family = ARPHRD_ETHER;
		memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
		wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
	}

	atmel_enter_state(priv, STATION_STATE_DOWN);

	if (priv->bus_type == BUS_TYPE_PCCARD)
		atmel_write16(dev, GCR, 0x0060);
	atmel_write16(dev, GCR, 0x0040);
	return 0;
}

static int atmel_validate_channel(struct atmel_private *priv, int channel)
{
	/* check that channel is OK, if so return zero,
	   else return suitable default channel */
	int i;

	for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
		if (priv->reg_domain == channel_table[i].reg_domain) {
			if (channel >= channel_table[i].min &&
			    channel <= channel_table[i].max)
				return 0;
			else
				return channel_table[i].min;
		}
	return 0;
}

static int atmel_proc_output (char *buf, struct atmel_private *priv)
{
	int i;
	char *p = buf;
	char *s, *r, *c;

	p += sprintf(p, "Driver version:\t\t%d.%d\n",
		     DRIVER_MAJOR, DRIVER_MINOR);

	if (priv->station_state != STATION_STATE_DOWN) {
		p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
				"Firmware location:\t",
			     priv->host_info.major_version,
			     priv->host_info.minor_version,
			     priv->host_info.build_version);

		if (priv->card_type != CARD_TYPE_EEPROM)
			p += sprintf(p, "on card\n");
		else if (priv->firmware)
			p += sprintf(p, "%s loaded by host\n",
				     priv->firmware_id);
		else
			p += sprintf(p, "%s loaded by hotplug\n",
				     priv->firmware_id);

		switch (priv->card_type) {
		case CARD_TYPE_PARALLEL_FLASH: c = "Parallel flash"; break;
		case CARD_TYPE_SPI_FLASH: c = "SPI flash\n"; break;
		case CARD_TYPE_EEPROM: c = "EEPROM"; break;
		default: c = "<unknown>";
		}

		r = "<unknown>";
		for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
			if (priv->reg_domain == channel_table[i].reg_domain)
				r = channel_table[i].name;

		p += sprintf(p, "MAC memory type:\t%s\n", c);
		p += sprintf(p, "Regulatory domain:\t%s\n", r);
		p += sprintf(p, "Host CRC checking:\t%s\n",
			     priv->do_rx_crc ? "On" : "Off");
		p += sprintf(p, "WPA-capable firmware:\t%s\n",
			     priv->use_wpa ? "Yes" : "No");
	}

	switch(priv->station_state) {
	case STATION_STATE_SCANNING: s = "Scanning"; break;
	case STATION_STATE_JOINNING: s = "Joining"; break;
	case STATION_STATE_AUTHENTICATING: s = "Authenticating"; break;
	case STATION_STATE_ASSOCIATING: s = "Associating"; break;
	case STATION_STATE_READY: s = "Ready"; break;
	case STATION_STATE_REASSOCIATING: s = "Reassociating"; break;
	case STATION_STATE_MGMT_ERROR: s = "Management error"; break;
	case STATION_STATE_DOWN: s = "Down"; break;
	default: s = "<unknown>";
	}

	p += sprintf(p, "Current state:\t\t%s\n", s);
	return p - buf;
}

static int atmel_read_proc(char *page, char **start, off_t off,
			   int count, int *eof, void *data)
{
        struct atmel_private *priv = data;
	int len = atmel_proc_output (page, priv);
        if (len <= off+count) *eof = 1;
        *start = page + off;
        len -= off;
        if (len>count) len = count;
        if (len<0) len = 0;
        return len;
}

struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
				   const AtmelFWType fw_type,
				   struct device *sys_dev,
				   int (*card_present)(void *), void *card)
{
	struct proc_dir_entry *ent;
	struct net_device *dev;
	struct atmel_private *priv;
	int rc;

	/* Create the network device object. */
        dev = alloc_etherdev(sizeof(*priv));
        if (!dev) {
		printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
		return NULL;
        }
	if (dev_alloc_name(dev, dev->name) < 0) {
		printk(KERN_ERR "atmel: Couldn't get name!\n");
		goto err_out_free;
	}

	priv = netdev_priv(dev);
	priv->dev = dev;
	priv->sys_dev = sys_dev;
	priv->present_callback = card_present;
	priv->card = card;
	priv->firmware = NULL;
	priv->firmware_id[0] = '\0';
	priv->firmware_type = fw_type;
	if (firmware) /* module parameter */
		strcpy(priv->firmware_id, firmware);
	priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
	priv->station_state = STATION_STATE_DOWN;
	priv->do_rx_crc = 0;
	/* For PCMCIA cards, some chips need CRC, some don't
	   so we have to probe. */
	if (priv->bus_type == BUS_TYPE_PCCARD) {
		priv->probe_crc = 1;
		priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
	} else
		priv->probe_crc = 0;
	memset(&priv->stats, 0, sizeof(priv->stats));
	memset(&priv->wstats, 0, sizeof(priv->wstats));
	priv->last_qual = jiffies;
	priv->last_beacon_timestamp = 0;
	memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
	memset(priv->BSSID, 0, 6);
	priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
	priv->station_was_associated = 0;

	priv->last_survey = jiffies;
	priv->preamble = LONG_PREAMBLE;
	priv->operating_mode = IW_MODE_INFRA;
	priv->connect_to_any_BSS = 0;
	priv->config_reg_domain = 0;
	priv->reg_domain = 0;
	priv->tx_rate = 3;
	priv->auto_tx_rate = 1;
	priv->channel = 4;
	priv->power_mode = 0;
	priv->SSID[0] = '\0';
	priv->SSID_size = 0;
	priv->new_SSID_size = 0;
	priv->frag_threshold = 2346;
	priv->rts_threshold = 2347;
	priv->short_retry = 7;
	priv->long_retry = 4;

	priv->wep_is_on = 0;
	priv->default_key = 0;
	priv->encryption_level = 0;
	priv->exclude_unencrypted = 0;
	priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
	priv->use_wpa = 0;
	memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
	memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));

	priv->default_beacon_period = priv->beacon_period = 100;
	priv->listen_interval = 1;

	init_timer(&priv->management_timer);
	spin_lock_init(&priv->irqlock);
	spin_lock_init(&priv->timerlock);
	priv->management_timer.function = atmel_management_timer;
	priv->management_timer.data = (unsigned long) dev;

	dev->open = atmel_open;
	dev->stop = atmel_close;
	dev->change_mtu = atmel_change_mtu;
	dev->set_mac_address = atmel_set_mac_address;
	dev->hard_start_xmit = start_tx;
	dev->get_stats = atmel_get_stats;
	dev->wireless_handlers = (struct iw_handler_def *)&atmel_handler_def;
	dev->do_ioctl = atmel_ioctl;
	dev->irq = irq;
	dev->base_addr = port;

	SET_NETDEV_DEV(dev, sys_dev);

	if ((rc = request_irq(dev->irq, service_interrupt, SA_SHIRQ, dev->name, dev))) {
		printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
		goto err_out_free;
	}

	if (!request_region(dev->base_addr, 32,
			    priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
		goto err_out_irq;
	}

	if (register_netdev(dev))
		goto err_out_res;

	if (!probe_atmel_card(dev)){
		unregister_netdev(dev);
		goto err_out_res;
	}

	netif_carrier_off(dev);

	ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
	if (!ent)
		printk(KERN_WARNING "atmel: unable to create /proc entry.\n");

	printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
	       dev->name, DRIVER_MAJOR, DRIVER_MINOR,
	       dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
	       dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5] );

	SET_MODULE_OWNER(dev);
	return dev;

err_out_res:
	release_region( dev->base_addr, 32);
err_out_irq:
	free_irq(dev->irq, dev);
err_out_free:
	free_netdev(dev);
	return NULL;
}

EXPORT_SYMBOL(init_atmel_card);

void stop_atmel_card(struct net_device *dev)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* put a brick on it... */
	if (priv->bus_type == BUS_TYPE_PCCARD)
		atmel_write16(dev, GCR, 0x0060);
	atmel_write16(dev, GCR, 0x0040);

	del_timer_sync(&priv->management_timer);
	unregister_netdev(dev);
	remove_proc_entry("driver/atmel", NULL);
	free_irq(dev->irq, dev);
	kfree(priv->firmware);
	release_region(dev->base_addr, 32);
	free_netdev(dev);
}

EXPORT_SYMBOL(stop_atmel_card);

static int atmel_set_essid(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_point *dwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* Check if we asked for `any' */
	if(dwrq->flags == 0) {
		priv->connect_to_any_BSS = 1;
	} else {
		int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;

		priv->connect_to_any_BSS = 0;

		/* Check the size of the string */
		if (dwrq->length > MAX_SSID_LENGTH + 1)
			 return -E2BIG;
		if (index != 0)
			return -EINVAL;

		memcpy(priv->new_SSID, extra, dwrq->length - 1);
		priv->new_SSID_size = dwrq->length - 1;
	}

	return -EINPROGRESS;
}

static int atmel_get_essid(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_point *dwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* Get the current SSID */
	if (priv->new_SSID_size != 0) {
		memcpy(extra, priv->new_SSID, priv->new_SSID_size);
		extra[priv->new_SSID_size] = '\0';
		dwrq->length = priv->new_SSID_size;
	} else {
		memcpy(extra, priv->SSID, priv->SSID_size);
		extra[priv->SSID_size] = '\0';
		dwrq->length = priv->SSID_size;
	}

	dwrq->flags = !priv->connect_to_any_BSS; /* active */

	return 0;
}

static int atmel_get_wap(struct net_device *dev,
			 struct iw_request_info *info,
			 struct sockaddr *awrq,
			 char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
	awrq->sa_family = ARPHRD_ETHER;

	return 0;
}

static int atmel_set_encode(struct net_device *dev,
			    struct iw_request_info *info,
			    struct iw_point *dwrq,
			    char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* Basic checking: do we have a key to set ?
	 * Note : with the new API, it's impossible to get a NULL pointer.
	 * Therefore, we need to check a key size == 0 instead.
	 * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
	 * when no key is present (only change flags), but older versions
	 * don't do it. - Jean II */
	if (dwrq->length > 0) {
		int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
		int current_index = priv->default_key;
		/* Check the size of the key */
		if (dwrq->length > 13) {
			return -EINVAL;
		}
		/* Check the index (none -> use current) */
		if (index < 0 || index >= 4)
			index = current_index;
		else
			priv->default_key = index;
		/* Set the length */
		if (dwrq->length > 5)
			priv->wep_key_len[index] = 13;
		else
			if (dwrq->length > 0)
				priv->wep_key_len[index] = 5;
			else
				/* Disable the key */
				priv->wep_key_len[index] = 0;
		/* Check if the key is not marked as invalid */
		if(!(dwrq->flags & IW_ENCODE_NOKEY)) {
			/* Cleanup */
			memset(priv->wep_keys[index], 0, 13);
			/* Copy the key in the driver */
			memcpy(priv->wep_keys[index], extra, dwrq->length);
		}
		/* WE specify that if a valid key is set, encryption
		 * should be enabled (user may turn it off later)
		 * This is also how "iwconfig ethX key on" works */
		if (index == current_index &&
		    priv->wep_key_len[index] > 0) {
			priv->wep_is_on = 1;
			priv->exclude_unencrypted = 1;
			if (priv->wep_key_len[index] > 5) {
				priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
				priv->encryption_level = 2;
			} else {
				priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
				priv->encryption_level = 1;
			}
		}
	} else {
		/* Do we want to just set the transmit key index ? */
		int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
		if (index >= 0 && index < 4) {
			priv->default_key = index;
		} else
			/* Don't complain if only change the mode */
			if (!dwrq->flags & IW_ENCODE_MODE) {
				return -EINVAL;
			}
	}
	/* Read the flags */
	if (dwrq->flags & IW_ENCODE_DISABLED) {
		priv->wep_is_on = 0;
		priv->encryption_level = 0;
		priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
	} else {
		priv->wep_is_on = 1;
		if (priv->wep_key_len[priv->default_key] > 5) {
			priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
			priv->encryption_level = 2;
		} else {
			priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
			priv->encryption_level = 1;
		}
	}
	if (dwrq->flags & IW_ENCODE_RESTRICTED)
		priv->exclude_unencrypted = 1;
	if(dwrq->flags & IW_ENCODE_OPEN)
		priv->exclude_unencrypted = 0;

	return -EINPROGRESS;		/* Call commit handler */
}

static int atmel_get_encode(struct net_device *dev,
			    struct iw_request_info *info,
			    struct iw_point *dwrq,
			    char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;

	if (!priv->wep_is_on)
		dwrq->flags = IW_ENCODE_DISABLED;
	else {
		if (priv->exclude_unencrypted)
			dwrq->flags = IW_ENCODE_RESTRICTED;
		else
			dwrq->flags = IW_ENCODE_OPEN;
	}
		/* Which key do we want ? -1 -> tx index */
	if (index < 0 || index >= 4)
		index = priv->default_key;
	dwrq->flags |= index + 1;
	/* Copy the key to the user buffer */
	dwrq->length = priv->wep_key_len[index];
	if (dwrq->length > 16) {
		dwrq->length=0;
	} else {
		memset(extra, 0, 16);
		memcpy(extra, priv->wep_keys[index], dwrq->length);
	}

	return 0;
}

static int atmel_set_encodeext(struct net_device *dev,
			    struct iw_request_info *info,
			    union iwreq_data *wrqu,
			    char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct iw_point *encoding = &wrqu->encoding;
	struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
	int idx, key_len, alg = ext->alg, set_key = 1;

	/* Determine and validate the key index */
	idx = encoding->flags & IW_ENCODE_INDEX;
	if (idx) {
		if (idx < 1 || idx > WEP_KEYS)
			return -EINVAL;
		idx--;
	} else
		idx = priv->default_key;

	if (encoding->flags & IW_ENCODE_DISABLED)
	    alg = IW_ENCODE_ALG_NONE;

	if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
		priv->default_key = idx;
		set_key = ext->key_len > 0 ? 1 : 0;
	}

	if (set_key) {
		/* Set the requested key first */
		switch (alg) {
		case IW_ENCODE_ALG_NONE:
			priv->wep_is_on = 0;
			priv->encryption_level = 0;
			priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
			break;
		case IW_ENCODE_ALG_WEP:
			if (ext->key_len > 5) {
				priv->wep_key_len[idx] = 13;
				priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
				priv->encryption_level = 2;
			} else if (ext->key_len > 0) {
				priv->wep_key_len[idx] = 5;
				priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
				priv->encryption_level = 1;
			} else {
				return -EINVAL;
			}
			priv->wep_is_on = 1;
			memset(priv->wep_keys[idx], 0, 13);
			key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
			memcpy(priv->wep_keys[idx], ext->key, key_len);
			break;
		default:
			return -EINVAL;
		}
	}

	return -EINPROGRESS;
}

static int atmel_get_encodeext(struct net_device *dev,
			    struct iw_request_info *info,
			    union iwreq_data *wrqu,
			    char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct iw_point *encoding = &wrqu->encoding;
	struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
	int idx, max_key_len;

	max_key_len = encoding->length - sizeof(*ext);
	if (max_key_len < 0)
		return -EINVAL;

	idx = encoding->flags & IW_ENCODE_INDEX;
	if (idx) {
		if (idx < 1 || idx > WEP_KEYS)
			return -EINVAL;
		idx--;
	} else
		idx = priv->default_key;

	encoding->flags = idx + 1;
	memset(ext, 0, sizeof(*ext));
	
	if (!priv->wep_is_on) {
		ext->alg = IW_ENCODE_ALG_NONE;
		ext->key_len = 0;
		encoding->flags |= IW_ENCODE_DISABLED;
	} else {
		if (priv->encryption_level > 0)
			ext->alg = IW_ENCODE_ALG_WEP;
		else
			return -EINVAL;

		ext->key_len = priv->wep_key_len[idx];
		memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
		encoding->flags |= IW_ENCODE_ENABLED;
	}

	return 0;
}

static int atmel_set_auth(struct net_device *dev,
			       struct iw_request_info *info,
			       union iwreq_data *wrqu, char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct iw_param *param = &wrqu->param;

	switch (param->flags & IW_AUTH_INDEX) {
	case IW_AUTH_WPA_VERSION:
	case IW_AUTH_CIPHER_PAIRWISE:
	case IW_AUTH_CIPHER_GROUP:
	case IW_AUTH_KEY_MGMT:
	case IW_AUTH_RX_UNENCRYPTED_EAPOL:
	case IW_AUTH_PRIVACY_INVOKED:
		/*
		 * atmel does not use these parameters
		 */
		break;

	case IW_AUTH_DROP_UNENCRYPTED:
		priv->exclude_unencrypted = param->value ? 1 : 0;
		break;

	case IW_AUTH_80211_AUTH_ALG: {
			if (param->value & IW_AUTH_ALG_SHARED_KEY) {
				priv->exclude_unencrypted = 1;
			} else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
				priv->exclude_unencrypted = 0;
			} else
				return -EINVAL;
			break;
		}

	case IW_AUTH_WPA_ENABLED:
		/* Silently accept disable of WPA */
		if (param->value > 0)
			return -EOPNOTSUPP;
		break;

	default:
		return -EOPNOTSUPP;
	}
	return -EINPROGRESS;
}

static int atmel_get_auth(struct net_device *dev,
			       struct iw_request_info *info,
			       union iwreq_data *wrqu, char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct iw_param *param = &wrqu->param;

	switch (param->flags & IW_AUTH_INDEX) {
	case IW_AUTH_DROP_UNENCRYPTED:
		param->value = priv->exclude_unencrypted;
		break;

	case IW_AUTH_80211_AUTH_ALG:
		if (priv->exclude_unencrypted == 1)
			param->value = IW_AUTH_ALG_SHARED_KEY;
		else
			param->value = IW_AUTH_ALG_OPEN_SYSTEM;
		break;

	case IW_AUTH_WPA_ENABLED:
		param->value = 0;
		break;

	default:
		return -EOPNOTSUPP;
	}
	return 0;
}


static int atmel_get_name(struct net_device *dev,
			  struct iw_request_info *info,
			  char *cwrq,
			  char *extra)
{
	strcpy(cwrq, "IEEE 802.11-DS");
	return 0;
}

static int atmel_set_rate(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *vwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	if (vwrq->fixed == 0) {
		priv->tx_rate = 3;
		priv->auto_tx_rate = 1;
	} else {
		priv->auto_tx_rate = 0;

		/* Which type of value ? */
		if ((vwrq->value < 4) && (vwrq->value >= 0)) {
			/* Setting by rate index */
			priv->tx_rate = vwrq->value;
		} else {
		/* Setting by frequency value */
			switch (vwrq->value) {
			case  1000000: priv->tx_rate = 0; break;
			case  2000000: priv->tx_rate = 1; break;
			case  5500000: priv->tx_rate = 2; break;
			case 11000000: priv->tx_rate = 3; break;
			default: return -EINVAL;
			}
		}
	}

	return -EINPROGRESS;
}

static int atmel_set_mode(struct net_device *dev,
			  struct iw_request_info *info,
			  __u32 *uwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
		return -EINVAL;

	priv->operating_mode = *uwrq;
	return -EINPROGRESS;
}

static int atmel_get_mode(struct net_device *dev,
			  struct iw_request_info *info,
			  __u32 *uwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	*uwrq = priv->operating_mode;
	return 0;
}

static int atmel_get_rate(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *vwrq,
			 char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	if (priv->auto_tx_rate) {
		vwrq->fixed = 0;
		vwrq->value = 11000000;
	} else {
		vwrq->fixed = 1;
		switch(priv->tx_rate) {
		case 0: vwrq->value =  1000000; break;
		case 1: vwrq->value =  2000000; break;
		case 2: vwrq->value =  5500000; break;
		case 3: vwrq->value = 11000000; break;
		}
	}
	return 0;
}

static int atmel_set_power(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	priv->power_mode = vwrq->disabled ? 0 : 1;
	return -EINPROGRESS;
}

static int atmel_get_power(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	vwrq->disabled = priv->power_mode ? 0 : 1;
	vwrq->flags = IW_POWER_ON;
	return 0;
}

static int atmel_set_retry(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
		if (vwrq->flags & IW_RETRY_MAX)
			priv->long_retry = vwrq->value;
		else if (vwrq->flags & IW_RETRY_MIN)
			priv->short_retry = vwrq->value;
		else {
			/* No modifier : set both */
			priv->long_retry = vwrq->value;
			priv->short_retry = vwrq->value;
		}
		return -EINPROGRESS;
	}

	return -EINVAL;
}

static int atmel_get_retry(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	vwrq->disabled = 0;      /* Can't be disabled */

	/* Note : by default, display the min retry number */
	if (vwrq->flags & IW_RETRY_MAX) {
		vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
		vwrq->value = priv->long_retry;
	} else {
		vwrq->flags = IW_RETRY_LIMIT;
		vwrq->value = priv->short_retry;
		if (priv->long_retry != priv->short_retry)
			vwrq->flags |= IW_RETRY_MIN;
	}

	return 0;
}

static int atmel_set_rts(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *vwrq,
			 char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int rthr = vwrq->value;

	if (vwrq->disabled)
		rthr = 2347;
	if ((rthr < 0) || (rthr > 2347)) {
		return -EINVAL;
	}
	priv->rts_threshold = rthr;

	return -EINPROGRESS;		/* Call commit handler */
}

static int atmel_get_rts(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *vwrq,
			 char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	vwrq->value = priv->rts_threshold;
	vwrq->disabled = (vwrq->value >= 2347);
	vwrq->fixed = 1;

	return 0;
}

static int atmel_set_frag(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *vwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int fthr = vwrq->value;

	if (vwrq->disabled)
		fthr = 2346;
	if ((fthr < 256) || (fthr > 2346)) {
		return -EINVAL;
	}
	fthr &= ~0x1;	/* Get an even value - is it really needed ??? */
	priv->frag_threshold = fthr;

	return -EINPROGRESS;		/* Call commit handler */
}

static int atmel_get_frag(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *vwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	vwrq->value = priv->frag_threshold;
	vwrq->disabled = (vwrq->value >= 2346);
	vwrq->fixed = 1;

	return 0;
}

static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
				2447, 2452, 2457, 2462, 2467, 2472, 2484 };

static int atmel_set_freq(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_freq *fwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int rc = -EINPROGRESS;		/* Call commit handler */

	/* If setting by frequency, convert to a channel */
	if ((fwrq->e == 1) &&
	    (fwrq->m >= (int) 241200000) &&
	    (fwrq->m <= (int) 248700000)) {
		int f = fwrq->m / 100000;
		int c = 0;
		while ((c < 14) && (f != frequency_list[c]))
			c++;
		/* Hack to fall through... */
		fwrq->e = 0;
		fwrq->m = c + 1;
	}
	/* Setting by channel number */
	if ((fwrq->m > 1000) || (fwrq->e > 0))
		rc = -EOPNOTSUPP;
	else {
		int channel = fwrq->m;
		if (atmel_validate_channel(priv, channel) == 0) {
			priv->channel = channel;
		} else {
			rc = -EINVAL;
		}
	}
	return rc;
}

static int atmel_get_freq(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_freq *fwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	fwrq->m = priv->channel;
	fwrq->e = 0;
	return 0;
}

static int atmel_set_scan(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *vwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	unsigned long flags;

	/* Note : you may have realised that, as this is a SET operation,
	 * this is privileged and therefore a normal user can't
	 * perform scanning.
	 * This is not an error, while the device perform scanning,
	 * traffic doesn't flow, so it's a perfect DoS...
	 * Jean II */

	if (priv->station_state == STATION_STATE_DOWN)
		return -EAGAIN;

	/* Timeout old surveys. */
	if ((jiffies - priv->last_survey) > (20 * HZ))
		priv->site_survey_state = SITE_SURVEY_IDLE;
	priv->last_survey = jiffies;

	/* Initiate a scan command */
	if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
		return -EBUSY;

	del_timer_sync(&priv->management_timer);
	spin_lock_irqsave(&priv->irqlock, flags);

	priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
	priv->fast_scan = 0;
	atmel_scan(priv, 0);
	spin_unlock_irqrestore(&priv->irqlock, flags);

	return 0;
}

static int atmel_get_scan(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_point *dwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int i;
	char *current_ev = extra;
	struct iw_event	iwe;

	if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
		return -EAGAIN;

	for (i = 0; i < priv->BSS_list_entries; i++) {
		iwe.cmd = SIOCGIWAP;
		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
		memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
		current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);

		iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
		if (iwe.u.data.length > 32)
			iwe.u.data.length = 32;
		iwe.cmd = SIOCGIWESSID;
		iwe.u.data.flags = 1;
		current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);

		iwe.cmd = SIOCGIWMODE;
		iwe.u.mode = priv->BSSinfo[i].BSStype;
		current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);

		iwe.cmd = SIOCGIWFREQ;
		iwe.u.freq.m = priv->BSSinfo[i].channel;
		iwe.u.freq.e = 0;
		current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);

		iwe.cmd = SIOCGIWENCODE;
		if (priv->BSSinfo[i].UsingWEP)
			iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
		else
			iwe.u.data.flags = IW_ENCODE_DISABLED;
		iwe.u.data.length = 0;
		current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
	}

	/* Length of data */
	dwrq->length = (current_ev - extra);
	dwrq->flags = 0;

	return 0;
}

static int atmel_get_range(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_point *dwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct iw_range *range = (struct iw_range *) extra;
	int k, i, j;

	dwrq->length = sizeof(struct iw_range);
	memset(range, 0, sizeof(struct iw_range));
	range->min_nwid = 0x0000;
	range->max_nwid = 0x0000;
	range->num_channels = 0;
	for (j = 0; j < sizeof(channel_table)/sizeof(channel_table[0]); j++)
		if (priv->reg_domain == channel_table[j].reg_domain) {
			range->num_channels = channel_table[j].max - channel_table[j].min + 1;
			break;
		}
	if (range->num_channels != 0) {
		for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
			range->freq[k].i = i; /* List index */
			range->freq[k].m = frequency_list[i - 1] * 100000;
			range->freq[k++].e = 1;	/* Values in table in MHz -> * 10^5 * 10 */
		}
		range->num_frequency = k;
	}

	range->max_qual.qual = 100;
	range->max_qual.level = 100;
	range->max_qual.noise = 0;
	range->max_qual.updated = IW_QUAL_NOISE_INVALID;

	range->avg_qual.qual = 50;
	range->avg_qual.level = 50;
	range->avg_qual.noise = 0;
	range->avg_qual.updated = IW_QUAL_NOISE_INVALID;

	range->sensitivity = 0;

	range->bitrate[0] =  1000000;
	range->bitrate[1] =  2000000;
	range->bitrate[2] =  5500000;
	range->bitrate[3] = 11000000;
	range->num_bitrates = 4;

	range->min_rts = 0;
	range->max_rts = 2347;
	range->min_frag = 256;
	range->max_frag = 2346;

	range->encoding_size[0] = 5;
	range->encoding_size[1] = 13;
	range->num_encoding_sizes = 2;
	range->max_encoding_tokens = 4;

	range->pmp_flags = IW_POWER_ON;
	range->pmt_flags = IW_POWER_ON;
	range->pm_capa = 0;

	range->we_version_source = WIRELESS_EXT;
	range->we_version_compiled = WIRELESS_EXT;
	range->retry_capa = IW_RETRY_LIMIT ;
	range->retry_flags = IW_RETRY_LIMIT;
	range->r_time_flags = 0;
	range->min_retry = 1;
	range->max_retry = 65535;

	return 0;
}

static int atmel_set_wap(struct net_device *dev,
			 struct iw_request_info *info,
			 struct sockaddr *awrq,
			 char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int i;
	static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
	static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
	unsigned long flags;

	if (awrq->sa_family != ARPHRD_ETHER)
		return -EINVAL;

	if (!memcmp(any, awrq->sa_data, 6) ||
	    !memcmp(off, awrq->sa_data, 6)) {
		del_timer_sync(&priv->management_timer);
		spin_lock_irqsave(&priv->irqlock, flags);
		atmel_scan(priv, 1);
		spin_unlock_irqrestore(&priv->irqlock, flags);
		return 0;
	}

	for (i = 0; i < priv->BSS_list_entries; i++) {
		if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
			if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
				return -EINVAL;
			} else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
				return -EINVAL;
			} else {
				del_timer_sync(&priv->management_timer);
				spin_lock_irqsave(&priv->irqlock, flags);
				atmel_join_bss(priv, i);
				spin_unlock_irqrestore(&priv->irqlock, flags);
				return 0;
			}
		}
	}

	return -EINVAL;
}

static int atmel_config_commit(struct net_device *dev,
			       struct iw_request_info *info,	/* NULL */
			       void *zwrq,			/* NULL */
			       char *extra)			/* NULL */
{
	return atmel_open(dev);
}

static const iw_handler atmel_handler[] =
{
	(iw_handler) atmel_config_commit,	/* SIOCSIWCOMMIT */
	(iw_handler) atmel_get_name,		/* SIOCGIWNAME */
	(iw_handler) NULL,			/* SIOCSIWNWID */
	(iw_handler) NULL,			/* SIOCGIWNWID */
	(iw_handler) atmel_set_freq,		/* SIOCSIWFREQ */
	(iw_handler) atmel_get_freq,		/* SIOCGIWFREQ */
	(iw_handler) atmel_set_mode,		/* SIOCSIWMODE */
	(iw_handler) atmel_get_mode,		/* SIOCGIWMODE */
	(iw_handler) NULL,			/* SIOCSIWSENS */
	(iw_handler) NULL,			/* SIOCGIWSENS */
	(iw_handler) NULL,			/* SIOCSIWRANGE */
	(iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
	(iw_handler) NULL,			/* SIOCSIWPRIV */
	(iw_handler) NULL,			/* SIOCGIWPRIV */
	(iw_handler) NULL,			/* SIOCSIWSTATS */
	(iw_handler) NULL,			/* SIOCGIWSTATS */
	(iw_handler) NULL,			/* SIOCSIWSPY */
	(iw_handler) NULL,			/* SIOCGIWSPY */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) atmel_set_wap,		/* SIOCSIWAP */
	(iw_handler) atmel_get_wap,		/* SIOCGIWAP */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) NULL,			/* SIOCGIWAPLIST */
	(iw_handler) atmel_set_scan,		/* SIOCSIWSCAN */
	(iw_handler) atmel_get_scan,		/* SIOCGIWSCAN */
	(iw_handler) atmel_set_essid,		/* SIOCSIWESSID */
	(iw_handler) atmel_get_essid,		/* SIOCGIWESSID */
	(iw_handler) NULL,			/* SIOCSIWNICKN */
	(iw_handler) NULL,			/* SIOCGIWNICKN */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) atmel_set_rate,		/* SIOCSIWRATE */
	(iw_handler) atmel_get_rate,		/* SIOCGIWRATE */
	(iw_handler) atmel_set_rts,		/* SIOCSIWRTS */
	(iw_handler) atmel_get_rts,		/* SIOCGIWRTS */
	(iw_handler) atmel_set_frag,		/* SIOCSIWFRAG */
	(iw_handler) atmel_get_frag,		/* SIOCGIWFRAG */
	(iw_handler) NULL,			/* SIOCSIWTXPOW */
	(iw_handler) NULL,			/* SIOCGIWTXPOW */
	(iw_handler) atmel_set_retry,		/* SIOCSIWRETRY */
	(iw_handler) atmel_get_retry,		/* SIOCGIWRETRY */
	(iw_handler) atmel_set_encode,		/* SIOCSIWENCODE */
	(iw_handler) atmel_get_encode,		/* SIOCGIWENCODE */
	(iw_handler) atmel_set_power,		/* SIOCSIWPOWER */
	(iw_handler) atmel_get_power,		/* SIOCGIWPOWER */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) NULL,			/* SIOCSIWGENIE */
	(iw_handler) NULL,			/* SIOCGIWGENIE */
	(iw_handler) atmel_set_auth,		/* SIOCSIWAUTH */
	(iw_handler) atmel_get_auth,		/* SIOCGIWAUTH */
	(iw_handler) atmel_set_encodeext,	/* SIOCSIWENCODEEXT */
	(iw_handler) atmel_get_encodeext,	/* SIOCGIWENCODEEXT */
	(iw_handler) NULL,			/* SIOCSIWPMKSA */
};

static const iw_handler atmel_private_handler[] =
{
	NULL,				/* SIOCIWFIRSTPRIV */
};

typedef struct atmel_priv_ioctl {
	char id[32];
	unsigned char __user *data;
	unsigned short len;
} atmel_priv_ioctl;

#define ATMELFWL	SIOCIWFIRSTPRIV
#define ATMELIDIFC	ATMELFWL + 1
#define ATMELRD		ATMELFWL + 2
#define ATMELMAGIC 0x51807
#define REGDOMAINSZ 20

static const struct iw_priv_args atmel_private_args[] = {
	{
		.cmd = ATMELFWL,
		.set_args = IW_PRIV_TYPE_BYTE
				| IW_PRIV_SIZE_FIXED
				| sizeof (atmel_priv_ioctl),
		.get_args = IW_PRIV_TYPE_NONE,
		.name = "atmelfwl"
	}, {
		.cmd = ATMELIDIFC,
		.set_args = IW_PRIV_TYPE_NONE,
		.get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
		.name = "atmelidifc"
	}, {
		.cmd = ATMELRD,
		.set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
		.get_args = IW_PRIV_TYPE_NONE,
		.name = "regdomain"
	},
};

static const struct iw_handler_def atmel_handler_def =
{
	.num_standard	= sizeof(atmel_handler)/sizeof(iw_handler),
	.num_private	= sizeof(atmel_private_handler)/sizeof(iw_handler),
	.num_private_args = sizeof(atmel_private_args)/sizeof(struct iw_priv_args),
	.standard	= (iw_handler *) atmel_handler,
	.private	= (iw_handler *) atmel_private_handler,
	.private_args	= (struct iw_priv_args *) atmel_private_args,
	.get_wireless_stats = atmel_get_wireless_stats
};

static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
	int i, rc = 0;
	struct atmel_private *priv = netdev_priv(dev);
	atmel_priv_ioctl com;
	struct iwreq *wrq = (struct iwreq *) rq;
	unsigned char *new_firmware;
	char domain[REGDOMAINSZ + 1];

	switch (cmd) {
	case ATMELIDIFC:
		wrq->u.param.value = ATMELMAGIC;
		break;

	case ATMELFWL:
		if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
			rc = -EFAULT;
			break;
		}

		if (!capable(CAP_NET_ADMIN)) {
			rc = -EPERM;
			break;
		}

		if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
			rc = -ENOMEM;
			break;
		}

		if (copy_from_user(new_firmware, com.data, com.len)) {
			kfree(new_firmware);
			rc = -EFAULT;
			break;
		}

		kfree(priv->firmware);

		priv->firmware = new_firmware;
		priv->firmware_length = com.len;
		strncpy(priv->firmware_id, com.id, 31);
		priv->firmware_id[31] = '\0';
		break;

	case ATMELRD:
		if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
			rc = -EFAULT;
			break;
		}

		if (!capable(CAP_NET_ADMIN)) {
			rc = -EPERM;
			break;
		}

		domain[REGDOMAINSZ] = 0;
		rc = -EINVAL;
		for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++) {
			/* strcasecmp doesn't exist in the library */
			char *a = channel_table[i].name;
			char *b = domain;
			while (*a) {
				char c1 = *a++;
				char c2 = *b++;
				if (tolower(c1) != tolower(c2))
					break;
			}
			if (!*a && !*b) {
				priv->config_reg_domain = channel_table[i].reg_domain;
				rc = 0;
			}
		}

		if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
			rc = atmel_open(dev);
		break;

	default:
		rc = -EOPNOTSUPP;
	}

	return rc;
}

struct auth_body {
	u16 alg;
	u16 trans_seq;
	u16 status;
	u8 el_id;
	u8 chall_text_len;
	u8 chall_text[253];
};

static void atmel_enter_state(struct atmel_private *priv, int new_state)
{
	int old_state = priv->station_state;

	if (new_state == old_state)
		return;

	priv->station_state = new_state;

	if (new_state == STATION_STATE_READY) {
		netif_start_queue(priv->dev);
		netif_carrier_on(priv->dev);
	}

	if (old_state == STATION_STATE_READY) {
		netif_carrier_off(priv->dev);
		if (netif_running(priv->dev))
			netif_stop_queue(priv->dev);
		priv->last_beacon_timestamp = 0;
	}
}

static void atmel_scan(struct atmel_private *priv, int specific_ssid)
{
	struct {
		u8 BSSID[6];
		u8 SSID[MAX_SSID_LENGTH];
		u8 scan_type;
		u8 channel;
		u16 BSS_type;
		u16 min_channel_time;
		u16 max_channel_time;
		u8 options;
		u8 SSID_size;
	} cmd;

	memset(cmd.BSSID, 0xff, 6);

	if (priv->fast_scan) {
		cmd.SSID_size = priv->SSID_size;
		memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
		cmd.min_channel_time = cpu_to_le16(10);
		cmd.max_channel_time = cpu_to_le16(50);
	} else {
		priv->BSS_list_entries = 0;
		cmd.SSID_size = 0;
		cmd.min_channel_time = cpu_to_le16(10);
		cmd.max_channel_time = cpu_to_le16(120);
	}

	cmd.options = 0;

	if (!specific_ssid)
		cmd.options |= SCAN_OPTIONS_SITE_SURVEY;

	cmd.channel = (priv->channel & 0x7f);
	cmd.scan_type = SCAN_TYPE_ACTIVE;
	cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
		BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);

	atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));

	/* This must come after all hardware access to avoid being messed up
	   by stuff happening in interrupt context after we leave STATE_DOWN */
	atmel_enter_state(priv, STATION_STATE_SCANNING);
}

static void join(struct atmel_private *priv, int type)
{
	struct {
		u8 BSSID[6];
		u8 SSID[MAX_SSID_LENGTH];
		u8 BSS_type; /* this is a short in a scan command - weird */
		u8 channel;
		u16 timeout;
		u8 SSID_size;
		u8 reserved;
	} cmd;

	cmd.SSID_size = priv->SSID_size;
	memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
	memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
	cmd.channel = (priv->channel & 0x7f);
	cmd.BSS_type = type;
	cmd.timeout = cpu_to_le16(2000);

	atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
}

static void start(struct atmel_private *priv, int type)
{
	struct {
		u8 BSSID[6];
		u8 SSID[MAX_SSID_LENGTH];
		u8 BSS_type;
		u8 channel;
		u8 SSID_size;
		u8 reserved[3];
	} cmd;

	cmd.SSID_size = priv->SSID_size;
	memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
	memcpy(cmd.BSSID, priv->BSSID, 6);
	cmd.BSS_type = type;
	cmd.channel = (priv->channel & 0x7f);

	atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
}

static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
				u8 channel)
{
	int rejoin = 0;
	int new = capability & MFIE_TYPE_POWER_CONSTRAINT ?
		SHORT_PREAMBLE : LONG_PREAMBLE;

	if (priv->preamble != new) {
		priv->preamble = new;
		rejoin = 1;
		atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
	}

	if (priv->channel != channel) {
		priv->channel = channel;
		rejoin = 1;
		atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
	}

	if (rejoin) {
		priv->station_is_associated = 0;
		atmel_enter_state(priv, STATION_STATE_JOINNING);

		if (priv->operating_mode == IW_MODE_INFRA)
			join(priv, BSS_TYPE_INFRASTRUCTURE);
		else
			join(priv, BSS_TYPE_AD_HOC);
	}
}

static void send_authentication_request(struct atmel_private *priv, u16 system,
					u8 *challenge, int challenge_len)
{
	struct ieee80211_hdr_4addr header;
	struct auth_body auth;

	header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
	header.duration_id = cpu_to_le16(0x8000);
	header.seq_ctl = 0;
	memcpy(header.addr1, priv->CurrentBSSID, 6);
	memcpy(header.addr2, priv->dev->dev_addr, 6);
	memcpy(header.addr3, priv->CurrentBSSID, 6);

	if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
		/* no WEP for authentication frames with TrSeqNo 1 */
                header.frame_ctl |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);

	auth.alg = cpu_to_le16(system);

	auth.status = 0;
	auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
	priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
	priv->CurrentAuthentTransactionSeqNum += 2;

	if (challenge_len != 0)	{
		auth.el_id = 16; /* challenge_text */
		auth.chall_text_len = challenge_len;
		memcpy(auth.chall_text, challenge, challenge_len);
		atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
	} else {
		atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
	}
}

static void send_association_request(struct atmel_private *priv, int is_reassoc)
{
	u8 *ssid_el_p;
	int bodysize;
	struct ieee80211_hdr_4addr header;
	struct ass_req_format {
		u16 capability;
		u16 listen_interval;
		u8 ap[6]; /* nothing after here directly accessible */
		u8 ssid_el_id;
		u8 ssid_len;
		u8 ssid[MAX_SSID_LENGTH];
		u8 sup_rates_el_id;
		u8 sup_rates_len;
		u8 rates[4];
	} body;

	header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
		(is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
	header.duration_id = cpu_to_le16(0x8000);
	header.seq_ctl = 0;

	memcpy(header.addr1, priv->CurrentBSSID, 6);
	memcpy(header.addr2, priv->dev->dev_addr, 6);
	memcpy(header.addr3, priv->CurrentBSSID, 6);

	body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
	if (priv->wep_is_on)
		body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
	if (priv->preamble == SHORT_PREAMBLE)
		body.capability |= cpu_to_le16(MFIE_TYPE_POWER_CONSTRAINT);

	body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);

	/* current AP address - only in reassoc frame */
	if (is_reassoc) {
		memcpy(body.ap, priv->CurrentBSSID, 6);
		ssid_el_p = (u8 *)&body.ssid_el_id;
		bodysize = 18 + priv->SSID_size;
	} else {
		ssid_el_p = (u8 *)&body.ap[0];
		bodysize = 12 + priv->SSID_size;
	}

	ssid_el_p[0] = MFIE_TYPE_SSID;
	ssid_el_p[1] = priv->SSID_size;
	memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
	ssid_el_p[2 + priv->SSID_size] = MFIE_TYPE_RATES;
	ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
	memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);

	atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
}

static int is_frame_from_current_bss(struct atmel_private *priv,
				     struct ieee80211_hdr_4addr *header)
{
	if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
		return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
	else
		return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
}

static int retrieve_bss(struct atmel_private *priv)
{
	int i;
	int max_rssi = -128;
	int max_index = -1;

	if (priv->BSS_list_entries == 0)
		return -1;

	if (priv->connect_to_any_BSS) {
		/* Select a BSS with the max-RSSI but of the same type and of
		   the same WEP mode and that it is not marked as 'bad' (i.e.
		   we had previously failed to connect to this BSS with the
		   settings that we currently use) */
		priv->current_BSS = 0;
		for (i = 0; i < priv->BSS_list_entries; i++) {
			if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
			    ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
			     (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
			    !(priv->BSSinfo[i].channel & 0x80)) {
				max_rssi = priv->BSSinfo[i].RSSI;
				priv->current_BSS = max_index = i;
			}
		}
		return max_index;
	}

	for (i = 0; i < priv->BSS_list_entries; i++) {
		if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
		    memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
		    priv->operating_mode == priv->BSSinfo[i].BSStype &&
		    atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
			if (priv->BSSinfo[i].RSSI >= max_rssi) {
				max_rssi = priv->BSSinfo[i].RSSI;
				max_index = i;
			}
		}
	}
	return max_index;
}

static void store_bss_info(struct atmel_private *priv,
			   struct ieee80211_hdr_4addr *header, u16 capability,
			   u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
			   u8 *ssid, int is_beacon)
{
	u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
	int i, index;

	for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
		if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
			index = i;

        /* If we process a probe and an entry from this BSS exists
	   we will update the BSS entry with the info from this BSS.
	   If we process a beacon we will only update RSSI */

	if (index == -1) {
		if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
			return;
		index = priv->BSS_list_entries++;
		memcpy(priv->BSSinfo[index].BSSID, bss, 6);
		priv->BSSinfo[index].RSSI = rssi;
	} else {
		if (rssi > priv->BSSinfo[index].RSSI)
			priv->BSSinfo[index].RSSI = rssi;
		if (is_beacon)
			return;
	}

	priv->BSSinfo[index].channel = channel;
	priv->BSSinfo[index].beacon_period = beacon_period;
	priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
	memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
	priv->BSSinfo[index].SSIDsize = ssid_len;

	if (capability & WLAN_CAPABILITY_IBSS)
		priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
	else if (capability & WLAN_CAPABILITY_ESS)
		priv->BSSinfo[index].BSStype =IW_MODE_INFRA;

	priv->BSSinfo[index].preamble = capability & MFIE_TYPE_POWER_CONSTRAINT ?
		SHORT_PREAMBLE : LONG_PREAMBLE;
}

static void authenticate(struct atmel_private *priv, u16 frame_len)
{
	struct auth_body *auth = (struct auth_body *)priv->rx_buf;
	u16 status = le16_to_cpu(auth->status);
	u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
	u16 system = le16_to_cpu(auth->alg);

	if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
		/* no WEP */
		if (priv->station_was_associated) {
			atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
			send_association_request(priv, 1);
			return;
		} else {
			atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
			send_association_request(priv, 0);
			return;
		}
	}

	if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
		int should_associate = 0;
		/* WEP */
		if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
			return;

		if (system == WLAN_AUTH_OPEN) {
			if (trans_seq_no == 0x0002) {
				should_associate = 1;
			}
		} else if (system == WLAN_AUTH_SHARED_KEY) {
			if (trans_seq_no == 0x0002 &&
			    auth->el_id == MFIE_TYPE_CHALLENGE) {
				send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
				return;
			} else if (trans_seq_no == 0x0004) {
				should_associate = 1;
			}
		}

		if (should_associate) {
			if(priv->station_was_associated) {
				atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
				send_association_request(priv, 1);
				return;
			} else {
				atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
				send_association_request(priv, 0);
				return;
			}
		}
	}

	if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
		/* Do opensystem first, then try sharedkey */
		if (system == WLAN_AUTH_OPEN) {
			priv->CurrentAuthentTransactionSeqNum = 0x001;
			priv->exclude_unencrypted = 1;
			send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
			return;
		} else if (priv->connect_to_any_BSS) {
			int bss_index;

			priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;

			if ((bss_index  = retrieve_bss(priv)) != -1) {
				atmel_join_bss(priv, bss_index);
				return;
			}
		}
	}

	priv->AuthenticationRequestRetryCnt = 0;
	atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
	priv->station_is_associated = 0;
}

static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
{
	struct ass_resp_format {
		u16 capability;
		u16 status;
		u16 ass_id;
		u8 el_id;
		u8 length;
		u8 rates[4];
	} *ass_resp = (struct ass_resp_format *)priv->rx_buf;

	u16 status = le16_to_cpu(ass_resp->status);
	u16 ass_id = le16_to_cpu(ass_resp->ass_id);
	u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;

	union iwreq_data wrqu;

	if (frame_len < 8 + rates_len)
		return;

	if (status == WLAN_STATUS_SUCCESS) {
		if (subtype == IEEE80211_STYPE_ASSOC_RESP)
			priv->AssociationRequestRetryCnt = 0;
		else
			priv->ReAssociationRequestRetryCnt = 0;

		atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
				MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
		atmel_set_mib(priv, Phy_Mib_Type,
			      PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
		if (priv->power_mode == 0) {
			priv->listen_interval = 1;
			atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
				       MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
			atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
					MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
		} else {
			priv->listen_interval = 2;
			atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
				       MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
			atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
					MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
		}

		priv->station_is_associated = 1;
		priv->station_was_associated = 1;
		atmel_enter_state(priv, STATION_STATE_READY);

		/* Send association event to userspace */
		wrqu.data.length = 0;
		wrqu.data.flags = 0;
		memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
		wrqu.ap_addr.sa_family = ARPHRD_ETHER;
		wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);

		return;
	}

	if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
	    status != WLAN_STATUS_ASSOC_DENIED_RATES &&
	    status != WLAN_STATUS_CAPS_UNSUPPORTED &&
	    priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
		mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
		priv->AssociationRequestRetryCnt++;
		send_association_request(priv, 0);
		return;
	}

	if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
	    status != WLAN_STATUS_ASSOC_DENIED_RATES &&
	    status != WLAN_STATUS_CAPS_UNSUPPORTED &&
	    priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
		mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
		priv->ReAssociationRequestRetryCnt++;
		send_association_request(priv, 1);
		return;
	}

	atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
	priv->station_is_associated = 0;

	if (priv->connect_to_any_BSS) {
		int bss_index;
		priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;

		if ((bss_index = retrieve_bss(priv)) != -1)
			atmel_join_bss(priv, bss_index);
	}
}

void atmel_join_bss(struct atmel_private *priv, int bss_index)
{
	struct bss_info *bss =  &priv->BSSinfo[bss_index];

	memcpy(priv->CurrentBSSID, bss->BSSID, 6);
	memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);

	/* The WPA stuff cares about the current AP address */
	if (priv->use_wpa)
		build_wpa_mib(priv);

	/* When switching to AdHoc turn OFF Power Save if needed */

	if (bss->BSStype == IW_MODE_ADHOC &&
	    priv->operating_mode != IW_MODE_ADHOC &&
	    priv->power_mode) {
		priv->power_mode = 0;
		priv->listen_interval = 1;
		atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
			       MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
		atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
				MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
	}

	priv->operating_mode = bss->BSStype;
	priv->channel = bss->channel & 0x7f;
	priv->beacon_period = bss->beacon_period;

	if (priv->preamble != bss->preamble) {
		priv->preamble = bss->preamble;
		atmel_set_mib8(priv, Local_Mib_Type,
			       LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
	}

	if (!priv->wep_is_on && bss->UsingWEP) {
		atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
		priv->station_is_associated = 0;
		return;
	}

	if (priv->wep_is_on && !bss->UsingWEP) {
		atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
		priv->station_is_associated = 0;
		return;
	}

	atmel_enter_state(priv, STATION_STATE_JOINNING);

	if (priv->operating_mode == IW_MODE_INFRA)
		join(priv, BSS_TYPE_INFRASTRUCTURE);
	else
		join(priv, BSS_TYPE_AD_HOC);
}

static void restart_search(struct atmel_private *priv)
{
	int bss_index;

	if (!priv->connect_to_any_BSS) {
		atmel_scan(priv, 1);
	} else {
		priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;

		if ((bss_index = retrieve_bss(priv)) != -1)
			atmel_join_bss(priv, bss_index);
		else
			atmel_scan(priv, 0);
	}
}

static void smooth_rssi(struct atmel_private *priv, u8 rssi)
{
	u8 old = priv->wstats.qual.level;
	u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */

	switch (priv->firmware_type) {
		case ATMEL_FW_TYPE_502E:
			max_rssi = 63; /* 502-rmfd-reve max by experiment */
			break;
		default:
			break;
	}

	rssi = rssi * 100 / max_rssi;
	if ((rssi + old) % 2)
		priv->wstats.qual.level = (rssi + old) / 2 + 1;
	else
		priv->wstats.qual.level = (rssi + old) / 2;
	priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
	priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
}

static void atmel_smooth_qual(struct atmel_private *priv)
{
	unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
	while (time_diff--) {
		priv->last_qual += HZ;
		priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
		priv->wstats.qual.qual +=
			priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
		priv->beacons_this_sec = 0;
	}
	priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
	priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
}

/* deals with incoming managment frames. */
static void atmel_management_frame(struct atmel_private *priv,
				   struct ieee80211_hdr_4addr *header,
				   u16 frame_len, u8 rssi)
{
	u16 subtype;

	subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE;
	switch (subtype) {
	case IEEE80211_STYPE_BEACON:
	case IEEE80211_STYPE_PROBE_RESP:

		/* beacon frame has multiple variable-length fields -
		   never let an engineer loose with a data structure design. */
		{
			struct beacon_format {
				u64 timestamp;
				u16 interval;
				u16 capability;
				u8 ssid_el_id;
				u8 ssid_length;
				/* ssid here */
				u8 rates_el_id;
				u8 rates_length;
				/* rates here */
				u8 ds_el_id;
				u8 ds_length;
				/* ds here */
			} *beacon = (struct beacon_format *)priv->rx_buf;

			u8 channel, rates_length, ssid_length;
			u64 timestamp = le64_to_cpu(beacon->timestamp);
			u16 beacon_interval = le16_to_cpu(beacon->interval);
			u16 capability = le16_to_cpu(beacon->capability);
			u8 *beaconp = priv->rx_buf;
			ssid_length = beacon->ssid_length;
			/* this blows chunks. */
			if (frame_len < 14 || frame_len < ssid_length + 15)
				return;
			rates_length = beaconp[beacon->ssid_length + 15];
			if (frame_len < ssid_length + rates_length + 18)
				return;
			if (ssid_length >  MAX_SSID_LENGTH)
				return;
			channel = beaconp[ssid_length + rates_length + 18];

			if (priv->station_state == STATION_STATE_READY) {
				smooth_rssi(priv, rssi);
				if (is_frame_from_current_bss(priv, header)) {
					priv->beacons_this_sec++;
					atmel_smooth_qual(priv);
					if (priv->last_beacon_timestamp) {
						/* Note truncate this to 32 bits - kernel can't divide a long long */
						u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
						int beacons = beacon_delay / (beacon_interval * 1000);
						if (beacons > 1)
							priv->wstats.miss.beacon += beacons - 1;
					}
					priv->last_beacon_timestamp = timestamp;
					handle_beacon_probe(priv, capability, channel);
				}
			}

			if (priv->station_state == STATION_STATE_SCANNING)
				store_bss_info(priv, header, capability,
					       beacon_interval, channel, rssi,
					       ssid_length,
					       &beacon->rates_el_id,
					       subtype == IEEE80211_STYPE_BEACON);
		}
		break;

	case IEEE80211_STYPE_AUTH:

		if (priv->station_state == STATION_STATE_AUTHENTICATING)
			authenticate(priv, frame_len);

		break;

	case IEEE80211_STYPE_ASSOC_RESP:
	case IEEE80211_STYPE_REASSOC_RESP:

		if (priv->station_state == STATION_STATE_ASSOCIATING ||
		    priv->station_state == STATION_STATE_REASSOCIATING)
			associate(priv, frame_len, subtype);

		break;

	case IEEE80211_STYPE_DISASSOC:
		if (priv->station_is_associated &&
		    priv->operating_mode == IW_MODE_INFRA &&
		    is_frame_from_current_bss(priv, header)) {
			priv->station_was_associated = 0;
			priv->station_is_associated = 0;

			atmel_enter_state(priv, STATION_STATE_JOINNING);
			join(priv, BSS_TYPE_INFRASTRUCTURE);
		}

		break;

	case IEEE80211_STYPE_DEAUTH:
		if (priv->operating_mode == IW_MODE_INFRA &&
		    is_frame_from_current_bss(priv, header)) {
			priv->station_was_associated = 0;

			atmel_enter_state(priv, STATION_STATE_JOINNING);
			join(priv, BSS_TYPE_INFRASTRUCTURE);
		}

		break;
	}
}

/* run when timer expires */
static void atmel_management_timer(u_long a)
{
	struct net_device *dev = (struct net_device *) a;
	struct atmel_private *priv = netdev_priv(dev);
	unsigned long flags;

	/* Check if the card has been yanked. */
	if (priv->card && priv->present_callback &&
		!(*priv->present_callback)(priv->card))
		return;

	spin_lock_irqsave(&priv->irqlock, flags);

	switch (priv->station_state) {

	case STATION_STATE_AUTHENTICATING:
		if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
			atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
			priv->station_is_associated = 0;
			priv->AuthenticationRequestRetryCnt = 0;
			restart_search(priv);
		} else {
			int auth = WLAN_AUTH_OPEN;
			priv->AuthenticationRequestRetryCnt++;
			priv->CurrentAuthentTransactionSeqNum = 0x0001;
			mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
			if (priv->wep_is_on && priv->exclude_unencrypted)
				auth = WLAN_AUTH_SHARED_KEY;
			send_authentication_request(priv, auth, NULL, 0);
	  }
	  break;

	case STATION_STATE_ASSOCIATING:
		if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
			atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
			priv->station_is_associated = 0;
			priv->AssociationRequestRetryCnt = 0;
			restart_search(priv);
		} else {
			priv->AssociationRequestRetryCnt++;
			mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
			send_association_request(priv, 0);
		}
	  break;

	case STATION_STATE_REASSOCIATING:
		if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
			atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
			priv->station_is_associated = 0;
			priv->ReAssociationRequestRetryCnt = 0;
			restart_search(priv);
		} else {
			priv->ReAssociationRequestRetryCnt++;
			mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
			send_association_request(priv, 1);
		}
		break;

	default:
		break;
	}

	spin_unlock_irqrestore(&priv->irqlock, flags);
}

static void atmel_command_irq(struct atmel_private *priv)
{
	u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
	u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
	int fast_scan;

	if (status == CMD_STATUS_IDLE ||
	    status == CMD_STATUS_IN_PROGRESS)
		return;

	switch (command){

	case CMD_Start:
		if (status == CMD_STATUS_COMPLETE) {
			priv->station_was_associated = priv->station_is_associated;
			atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
				      (u8 *)priv->CurrentBSSID, 6);
			atmel_enter_state(priv, STATION_STATE_READY);
		}
		break;

	case CMD_Scan:
		fast_scan = priv->fast_scan;
		priv->fast_scan = 0;

		if (status != CMD_STATUS_COMPLETE) {
			atmel_scan(priv, 1);
		} else {
			int bss_index = retrieve_bss(priv);
			if (bss_index != -1) {
				atmel_join_bss(priv, bss_index);
			} else if (priv->operating_mode == IW_MODE_ADHOC &&
				   priv->SSID_size != 0) {
				start(priv, BSS_TYPE_AD_HOC);
			} else {
				priv->fast_scan = !fast_scan;
				atmel_scan(priv, 1);
			}
			priv->site_survey_state = SITE_SURVEY_COMPLETED;
		}
		break;

	case CMD_SiteSurvey:
		priv->fast_scan = 0;

		if (status != CMD_STATUS_COMPLETE)
			return;

		priv->site_survey_state = SITE_SURVEY_COMPLETED;
		if (priv->station_is_associated) {
			atmel_enter_state(priv, STATION_STATE_READY);
		} else {
			atmel_scan(priv, 1);
		}
		break;

	case CMD_Join:
		if (status == CMD_STATUS_COMPLETE) {
			if (priv->operating_mode == IW_MODE_ADHOC) {
				priv->station_was_associated = priv->station_is_associated;
				atmel_enter_state(priv, STATION_STATE_READY);
			} else {
				int auth = WLAN_AUTH_OPEN;
				priv->AuthenticationRequestRetryCnt = 0;
				atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);

				mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
				priv->CurrentAuthentTransactionSeqNum = 0x0001;
				if (priv->wep_is_on && priv->exclude_unencrypted)
					auth = WLAN_AUTH_SHARED_KEY;
				send_authentication_request(priv, auth, NULL, 0);
			}
			return;
		}

		atmel_scan(priv, 1);
	}
}

static int atmel_wakeup_firmware(struct atmel_private *priv)
{
	struct host_info_struct *iface = &priv->host_info;
	u16 mr1, mr3;
	int i;

	if (priv->card_type == CARD_TYPE_SPI_FLASH)
		atmel_set_gcr(priv->dev, GCR_REMAP);

	/* wake up on-board processor */
	atmel_clear_gcr(priv->dev, 0x0040);
	atmel_write16(priv->dev, BSR, BSS_SRAM);

	if (priv->card_type == CARD_TYPE_SPI_FLASH)
		mdelay(100);

	/* and wait for it */
	for (i = LOOP_RETRY_LIMIT; i; i--) {
		mr1 = atmel_read16(priv->dev, MR1);
		mr3 = atmel_read16(priv->dev, MR3);

		if (mr3 & MAC_BOOT_COMPLETE)
			break;
		if (mr1 & MAC_BOOT_COMPLETE &&
		    priv->bus_type == BUS_TYPE_PCCARD)
			break;
	}

	if (i == 0) {
		printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
		return 0;
	}

	if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
		printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
		return 0;
	}

	/* now check for completion of MAC initialization through
	   the FunCtrl field of the IFACE, poll MR1 to detect completion of
	   MAC initialization, check completion status, set interrupt mask,
	   enables interrupts and calls Tx and Rx initialization functions */

	atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);

	for (i = LOOP_RETRY_LIMIT; i; i--) {
		mr1 = atmel_read16(priv->dev, MR1);
		mr3 = atmel_read16(priv->dev, MR3);

		if (mr3 & MAC_INIT_COMPLETE)
			break;
		if (mr1 & MAC_INIT_COMPLETE &&
		    priv->bus_type == BUS_TYPE_PCCARD)
			break;
	}

	if (i == 0) {
		printk(KERN_ALERT "%s: MAC failed to initialise.\n",
				priv->dev->name);
		return 0;
	}

	/* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
	if ((mr3 & MAC_INIT_COMPLETE) &&
	    !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
		printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
		return 0;
	}
	if ((mr1 & MAC_INIT_COMPLETE) &&
	    !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
		printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
		return 0;
	}

	atmel_copy_to_host(priv->dev, (unsigned char *)iface,
			   priv->host_info_base, sizeof(*iface));

	iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
	iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
	iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
	iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
	iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
	iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
	iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
	iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
	iface->build_version = le16_to_cpu(iface->build_version);
	iface->command_pos = le16_to_cpu(iface->command_pos);
	iface->major_version = le16_to_cpu(iface->major_version);
	iface->minor_version = le16_to_cpu(iface->minor_version);
	iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
	iface->mac_status = le16_to_cpu(iface->mac_status);

	return 1;
}

/* determine type of memory and MAC address */
static int probe_atmel_card(struct net_device *dev)
{
	int rc = 0;
	struct atmel_private *priv = netdev_priv(dev);

	/* reset pccard */
	if (priv->bus_type == BUS_TYPE_PCCARD)
		atmel_write16(dev, GCR, 0x0060);

	atmel_write16(dev, GCR, 0x0040);
	mdelay(500);

	if (atmel_read16(dev, MR2) == 0) {
		/* No stored firmware so load a small stub which just
		   tells us the MAC address */
		int i;
		priv->card_type = CARD_TYPE_EEPROM;
		atmel_write16(dev, BSR, BSS_IRAM);
		atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
		atmel_set_gcr(dev, GCR_REMAP);
		atmel_clear_gcr(priv->dev, 0x0040);
		atmel_write16(dev, BSR, BSS_SRAM);
		for (i = LOOP_RETRY_LIMIT; i; i--)
			if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
				break;
		if (i == 0) {
			printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
		} else {
			atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
			/* got address, now squash it again until the network
			   interface is opened */
			if (priv->bus_type == BUS_TYPE_PCCARD)
				atmel_write16(dev, GCR, 0x0060);
			atmel_write16(dev, GCR, 0x0040);
			rc = 1;
		}
	} else if (atmel_read16(dev, MR4) == 0) {
		/* Mac address easy in this case. */
		priv->card_type = CARD_TYPE_PARALLEL_FLASH;
		atmel_write16(dev,  BSR, 1);
		atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
		atmel_write16(dev,  BSR, 0x200);
		rc = 1;
	} else {
		/* Standard firmware in flash, boot it up and ask
		   for the Mac Address */
		priv->card_type = CARD_TYPE_SPI_FLASH;
		if (atmel_wakeup_firmware(priv)) {
			atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);

			/* got address, now squash it again until the network
			   interface is opened */
			if (priv->bus_type == BUS_TYPE_PCCARD)
				atmel_write16(dev, GCR, 0x0060);
			atmel_write16(dev, GCR, 0x0040);
			rc = 1;
		}
	}

	if (rc) {
		if (dev->dev_addr[0] == 0xFF) {
			u8 default_mac[] = {0x00,0x04, 0x25, 0x00, 0x00, 0x00};
			printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
			memcpy(dev->dev_addr, default_mac, 6);
		}
	}

	return rc;
}

/* Move the encyption information on the MIB structure.
   This routine is for the pre-WPA firmware: later firmware has
   a different format MIB and a different routine. */
static void build_wep_mib(struct atmel_private *priv)
{
	struct { /* NB this is matched to the hardware, don't change. */
		u8 wep_is_on;
		u8 default_key; /* 0..3 */
		u8 reserved;
		u8 exclude_unencrypted;

		u32 WEPICV_error_count;
		u32 WEP_excluded_count;

		u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
		u8 encryption_level; /* 0, 1, 2 */
		u8 reserved2[3];
	} mib;
	int i;

	mib.wep_is_on = priv->wep_is_on;
	if (priv->wep_is_on) {
		if (priv->wep_key_len[priv->default_key] > 5)
			mib.encryption_level = 2;
		else
			mib.encryption_level = 1;
	} else {
		mib.encryption_level = 0;
	}

	mib.default_key = priv->default_key;
	mib.exclude_unencrypted = priv->exclude_unencrypted;

	for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
		memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);

	atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
}

static void build_wpa_mib(struct atmel_private *priv)
{
	/* This is for the later (WPA enabled) firmware. */

	struct { /* NB this is matched to the hardware, don't change. */
		u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
		u8 receiver_address[6];
		u8 wep_is_on;
		u8 default_key; /* 0..3 */
		u8 group_key;
		u8 exclude_unencrypted;
		u8 encryption_type;
		u8 reserved;

		u32 WEPICV_error_count;
		u32 WEP_excluded_count;

		u8 key_RSC[4][8];
	} mib;

	int i;

	mib.wep_is_on = priv->wep_is_on;
	mib.exclude_unencrypted = priv->exclude_unencrypted;
	memcpy(mib.receiver_address, priv->CurrentBSSID, 6);

	/* zero all the keys before adding in valid ones. */
	memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));

	if (priv->wep_is_on) {
		/* There's a comment in the Atmel code to the effect that this
		   is only valid when still using WEP, it may need to be set to
		   something to use WPA */
		memset(mib.key_RSC, 0, sizeof(mib.key_RSC));

		mib.default_key = mib.group_key = 255;
		for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
			if (priv->wep_key_len[i] > 0) {
				memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
				if (i == priv->default_key) {
					mib.default_key = i;
					mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
					mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
				} else {
					mib.group_key = i;
					priv->group_cipher_suite = priv->pairwise_cipher_suite;
				        mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
					mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
				}
			}
		}
		if (mib.default_key == 255)
			mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
		if (mib.group_key == 255)
			mib.group_key = mib.default_key;

	}

	atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
}

static int reset_atmel_card(struct net_device *dev)
{
	/* do everything necessary to wake up the hardware, including
	   waiting for the lightning strike and throwing the knife switch....

	   set all the Mib values which matter in the card to match
	   their settings in the atmel_private structure. Some of these
	   can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
	   can only be changed by tearing down the world and coming back through
	   here.

	   This routine is also responsible for initialising some
	   hardware-specific fields in the atmel_private structure,
	   including a copy of the firmware's hostinfo stucture
	   which is the route into the rest of the firmare datastructures. */

	struct atmel_private *priv = netdev_priv(dev);
	u8 configuration;
	int old_state = priv->station_state;

	/* data to add to the firmware names, in priority order
	   this implemenents firmware versioning */

	static char *firmware_modifier[] = {
		"-wpa",
		"",
		NULL
	};

	/* reset pccard */
	if (priv->bus_type == BUS_TYPE_PCCARD)
		atmel_write16(priv->dev, GCR, 0x0060);

	/* stop card , disable interrupts */
	atmel_write16(priv->dev, GCR, 0x0040);

	if (priv->card_type == CARD_TYPE_EEPROM) {
		/* copy in firmware if needed */
		const struct firmware *fw_entry = NULL;
		unsigned char *fw;
		int len = priv->firmware_length;
		if (!(fw = priv->firmware)) {
			if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
				if (strlen(priv->firmware_id) == 0) {
					printk(KERN_INFO
					       "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
					       dev->name);
					printk(KERN_INFO
					       "%s: if not, use the firmware= module parameter.\n",
					       dev->name);
					strcpy(priv->firmware_id, "atmel_at76c502.bin");
				}
				if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) != 0) {
					printk(KERN_ALERT
					       "%s: firmware %s is missing, cannot continue.\n",
					       dev->name, priv->firmware_id);
					return 0;
				}
			} else {
				int fw_index = 0;
				int success = 0;

				/* get firmware filename entry based on firmware type ID */
				while (fw_table[fw_index].fw_type != priv->firmware_type
						&& fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
					fw_index++;

				/* construct the actual firmware file name */
				if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
					int i;
					for (i = 0; firmware_modifier[i]; i++) {
						snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
							firmware_modifier[i], fw_table[fw_index].fw_file_ext);
						priv->firmware_id[31] = '\0';
						if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
							success = 1;
							break;
						}
					}
				}
				if (!success) {
					printk(KERN_ALERT
					       "%s: firmware %s is missing, cannot start.\n",
					       dev->name, priv->firmware_id);
					priv->firmware_id[0] = '\0';
					return 0;
				}
			}

			fw = fw_entry->data;
			len = fw_entry->size;
		}

	        if (len <= 0x6000) {
			atmel_write16(priv->dev, BSR, BSS_IRAM);
			atmel_copy_to_card(priv->dev, 0, fw, len);
			atmel_set_gcr(priv->dev, GCR_REMAP);
		} else {
			/* Remap */
			atmel_set_gcr(priv->dev, GCR_REMAP);
			atmel_write16(priv->dev, BSR, BSS_IRAM);
			atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
			atmel_write16(priv->dev, BSR, 0x2ff);
			atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
		}

		if (fw_entry)
			release_firmware(fw_entry);
	}

	if (!atmel_wakeup_firmware(priv))
		return 0;

	/* Check the version and set the correct flag for wpa stuff,
	   old and new firmware is incompatible.
	   The pre-wpa 3com firmware reports major version 5,
	   the wpa 3com firmware is major version 4 and doesn't need
	   the 3com broken-ness filter. */
	priv->use_wpa = (priv->host_info.major_version == 4);
	priv->radio_on_broken = (priv->host_info.major_version == 5);

        /* unmask all irq sources */
	atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);

	/* int Tx system and enable Tx */
	atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
	atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
	atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
	atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);

	priv->tx_desc_free = priv->host_info.tx_desc_count;
	priv->tx_desc_head = 0;
	priv->tx_desc_tail = 0;
	priv->tx_desc_previous = 0;
	priv->tx_free_mem = priv->host_info.tx_buff_size;
	priv->tx_buff_head = 0;
	priv->tx_buff_tail = 0;

	configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
	atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
				   configuration | FUNC_CTRL_TxENABLE);

	/* init Rx system and enable */
	priv->rx_desc_head = 0;

	configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
	atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
				   configuration | FUNC_CTRL_RxENABLE);

	if (!priv->radio_on_broken) {
		if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
		    CMD_STATUS_REJECTED_RADIO_OFF) {
			printk(KERN_INFO
			       "%s: cannot turn the radio on. (Hey radio, you're beautiful!)\n",
			       dev->name);
                        return 0;
		}
	}

	/* set up enough MIB values to run. */
	atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
	atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
	atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
	atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
	atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
	atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
	atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
	atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
		      priv->dev->dev_addr, 6);
	atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
	atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
	atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
	atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
	atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
	if (priv->use_wpa)
		build_wpa_mib(priv);
	else
		build_wep_mib(priv);

	if (old_state == STATION_STATE_READY)
	{
		union iwreq_data wrqu;

		wrqu.data.length = 0;
		wrqu.data.flags = 0;
		wrqu.ap_addr.sa_family = ARPHRD_ETHER;
		memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
		wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
	}

	return 1;
}

static void atmel_send_command(struct atmel_private *priv, int command,
			       void *cmd, int cmd_size)
{
	if (cmd)
		atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
				   cmd, cmd_size);

	atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
	atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
}

static int atmel_send_command_wait(struct atmel_private *priv, int command,
				   void *cmd, int cmd_size)
{
	int i, status;

	atmel_send_command(priv, command, cmd, cmd_size);

	for (i = 5000; i; i--) {
		status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
		if (status != CMD_STATUS_IDLE &&
		    status != CMD_STATUS_IN_PROGRESS)
			break;
		udelay(20);
	}

	if (i == 0) {
		printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
		status =  CMD_STATUS_HOST_ERROR;
	} else {
		if (command != CMD_EnableRadio)
			status = CMD_STATUS_COMPLETE;
	}