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2019-05-13free(9) sizes.mpi1-2/+4
From miod@
2018-01-11Add size for free.visa1-2/+5
OK mpi@
2017-04-30Rename Debugger() into db_enter().mpi1-4/+4
Using a name with the 'db_' prefix makes it invisible from the dynamic profiler. ok deraadt@, kettenis@, visa@
2015-09-02sizes for free()deraadt1-2/+2
2015-05-19Move acquisition of the kernel lock deeper in the interrupt path, and makemiod1-1/+10
sure clock interrupts do not attempt to acquire it. This will also eventually allow for IPL_MPSAFE interrupts on alpha. Tested by dlg@ and I.
2014-12-09Replace some malloc(n*size,...) calls with mallocarray().doug2-4/+4
ok tedu@ deraadt@
2014-11-16Replace a plethora of historical protection options with justderaadt1-3/+3
PROT_NONE, PROT_READ, PROT_WRITE, and PROT_EXEC from mman.h. PROT_MASK is introduced as the one true way of extracting those bits. Remove UVM_ADV_* wrapper, using the standard names. ok doug guenther kettenis
2014-09-13Replace all queue *_END macro calls except CIRCLEQ_END with NULL.doug1-2/+2
CIRCLEQ_* is deprecated and not called in the tree. The other queue types have *_END macros which were added for symmetry with CIRCLEQ_END. They are defined as NULL. There's no reason to keep the other *_END macro calls. ok millert@
2014-07-12add a size argument to free. will be used soon, but for now default to 0.tedu3-6/+6
after discussions with beck deraadt kettenis.
2014-07-11sgmap loading didnt respect the dmamaps max number of segments.dlg1-1/+4
this let it wanter off writing segment descriptors off in memory it didnt own, which led to some pretty awesome memory corruption. if you had a network card with a small number of tx descriptors per packet, a lot of memory, and a heavily fragmented packet (ie, ssh) you were basically guaranteed a confusing panic. ok miod@
2014-07-11Convert bus_dmamem_map(9) to km_alloc(9) in order to make it fail andmpi1-7/+6
not sleep if the allocator cannot obtain a lock when BUS_DMA_NOWAIT is specified. idea and inputs from kettenis@, ok miod@
2014-06-14Preallocate sgmap extent regions for tsp, cia and mcpcia dma maps, which falljmatthew2-6/+24
back to sgmap if the direct mapping fails. ok miod@
2014-03-31Use extent_alloc_with_descr(9) and add a mutex to protect the extent.kettenis3-12/+23
This should make bus_dmamap_load(9) and bus_dmamap_unload(9) "mpsafe". As a bonus this gets rid of a potential memory allocation in the IO path. ok miod@
2011-06-23Fix the error path in bus_dmamem_map.ariane1-6/+2
As discussed on icb: remove the comment, remove pmap_remove (uvm_km_free does that for us). ok oga@, deraadt@
2011-04-15More than a decade ago, interrupt handlers on sparc started returning 0deraadt1-3/+7
(interrupt was not for me), 1 (positive interrupt was for me), or -1 (i am not sure...). We have continued with this practice in as many drivers as possible, throughout the tree. This makes some of the architectures use that information in their interrupt handler calling code -- if 1 is returned (and we know this specific machine does not have edge-shared interrupts), we finish servicing other possible handlers on the same pin. If the interrupt pin remains asserted (from a different device), we will end up back in the interrupt servicing code of course... but this is cheaper than calling all the chained interrupts on a pin. This does of course count on shared level interrupts being properly sorted by IPL. There have been some concerns about starvation of drivers which incorrectly return 1. Those drivers should be hunted down so that they return -1. (other architectures will follow) ok kettenis drahn dlg miod
2010-12-26Kill pmap_phys_address(), and force every driver's mmap() routine to returnmiod1-2/+2
a physical address [more precisely, something suitable to pass to pmap_enter()'sphysical address argument]. This allows MI drivers to implement mmap() routines without having to know about the pmap_phys_address() implementation and #ifdef obfuscation.
2010-11-20This is a first step towards getting rid of avail_start and avail_end in themiod1-4/+2
kernel, currently limited to low-hanging fruit: these variables were used by bus_dma to specify the range in which to allocate memory, back when uvm_pglistalloc() was stupid and would not walk the vm_physseg[]. Nowadays, except on some platforms for early initialization, these variables are not used, or do not need to be global variables. Therefore: - remove `extern' declarations of avail_start and avail_end (or close cousins, such as arm physical_start and physical_end) from files which no longer need to use them. - make them local variables whenever possible. - remove them when they are assigned to but no longer used.
2010-09-20Get rid of evcount's support for arranging counters in a treematthew1-3/+2
hierarchy. Everything attached to a single root node anyway, so at best we had a bush. "i think it is good" deraadt@
2010-04-10pmap_extract() does the equivalent of vtophys if pmap_kernel(), so instead ofoga2-11/+15
doing if (p != NULL) pmap_extract() else vtophys() in a loop, just do pmap_extract unconditionally. ok miod@ (he found a typo, all hail miod!)
2010-03-29PMAP_CANFAIL for bus_dmamem_map on all other architectures (and someoga1-6/+18
whitespace tweaks on i386 so that it matches). ok kettenis@
2009-09-30Remove unused last argument of alpha_shared_intr_disestablish().miod1-3/+2
2009-04-20Add a BUS_DMA_ZERO flag for bus_dmamem_alloc() to return zeroed memory.oga1-1/+3
Saves every damned driver calling bzero(), and continues the M_ZERO, PR_ZERO symmetry.
2009-04-14Convert the waitok field of uvm_pglistalloc to "flags", more will be added soon.oga1-3/+5
For the possibility of sleeping, the first two flags are UVM_PLA_WAITOK and UVM_PLA_NOWAIT. It is an error not to show intention, so assert that one of the two is provided. Switch over every caller in the tree to using the appropriate flag. ok art@, ariane@
2009-03-07When allocating memory in bus_dmamem_alloc() with uvm_pglistalloc(), do notmiod1-2/+2
try to be smart for the address range, uvm_pglistalloc() is smart enough nowadays.
2008-06-26First pass at removing clauses 3 and 4 from NetBSD licenses.ray5-40/+5
Not sure what's more surprising: how long it took for NetBSD to catch up to the rest of the BSDs (including UCB), or the amount of code that NetBSD has claimed for itself without attributing to the actual authors. OK deraadt@
2007-10-02Apply (with slight variants) this elimination of bzero() with M_ZERO:krw1-4/+3
- if ((mapstore = malloc(mapsize, M_DEVBUF, - (flags & BUS_DMA_NOWAIT) ? M_NOWAIT : M_WAITOK)) == NULL) + if ((mapstore = malloc(mapsize, M_DEVBUF, (flags & BUS_DMA_NOWAIT) ? + (M_NOWAIT | M_ZERO) : (M_WAITOK | M_ZERO))) == NULL) return (ENOMEM); - bzero(mapstore, mapsize);
2006-06-15Rework the interrupt code, shaving some cycles off in the process.brad1-1/+9
Rather than an "iointr" routine that decomposes a vector into an IRQ, we maintain a vector table directly, hooking up each "iointr" routine at the correct vector. This also allows us to hook device interrupts up to specific vectors. From thorpej NetBSD Tested by myself and a number of end-users.
2006-05-21Check for stale flags in the DMA map.brad1-1/+5
From thorpej NetBSD
2006-05-21- _bus_dmamap_load_buffer_direct_common -> _bus_dmamap_load_buffer_directbrad1-9/+10
- fix _bus_dmamap_load_(uio/mbuf)_direct panic messages. - s/vm_page_alloc_memory/uvm_pglistalloc/ in panic message. From NetBSD
2006-05-21Fix a couple of comments.brad1-4/+4
From NetBSD
2006-05-21Pay attention to BUS_DMA_READ; don't need to allocate a spillbrad1-13/+45
page if it is set. From NetBSD
2006-05-21Implement dmamap_load_uio for SGMAPs.brad1-2/+73
From NetBSD
2006-05-12Keep track of which DMA window was actually used to map thebrad2-2/+10
request (not always the passed in DMA tag if we try direct-map and then fall back to sgmap-mapped). Use the actual window when performing dmamap_sync and dmamap_unload operations. From NetBSD ok martin@
2006-04-13Use PAGE_SIZE rather than NBPG.brad3-13/+13
From NetBSD ok martin@ miod@
2006-04-04clean up after Theo's "support mbuf handling in alpha sgmap dma maps" commit.brad2-113/+5
ok martin@
2006-03-27rev 1.30brad1-13/+12
Don't increase the segment index if we skipped a zero-length mbuf. rev 1.22 Since the SGMAP buffer load subroutine doesn't need to modify the segment index, don't pass it by reference. From NetBSD ok miod@
2006-03-20factorize SGMAP-mapped DMA map creation and destroy codemartin2-2/+51
ok miod@, additional testing jsg@ from NetBSD
2006-03-18In _bus_dmamem_alloc_range(), do not ignore the caller's ``high'' parameter.miod1-3/+1
Makes isadma much happier. From NetBSD
2006-03-13Protect sgmap extents with splvm(); from NetBSD.miod1-5/+10
2006-01-29Add a alpha_shared_intr_reset_strays() function that resets the straymartin1-1/+14
interrupt counter for a given shared interrupt descriptor. When an interrupt is successfully handled, reset the strays counter, thus preventing a "slow leak" from eventually shutting off the interrupt vector. from NetBSD via KUDO Takashi
2005-10-28no more Mach-macrosmartin1-2/+2
2004-12-25Use list and queue macros where applicable to make the code easier to read;miod2-11/+8
no functional change.
2004-11-09Do not map empty mbufs (m_len == 0) in bus_dmamap_load_mbuf() as these mappingsclaudio2-3/+8
may disturb the dma as seen in ipw(4). Emtpy mbufs are at the beginning of the mbuf chain and are as example a "side-effect" of a previous m_adj() call. OK miod@ mickey@ jason@ markus@
2004-06-28Use new event counter API for interrupt counting on alpha. By me, with someaaron1-2/+7
edits by Theo. deraadt@ ok
2004-01-13support mbuf handling in alpha sgmap dma maps; from netbsdderaadt1-180/+187
2003-10-18typos from Jared Yanovich;jmc2-5/+5
2002-10-07this removes the functionality of adding allocatedmickey1-1/+2
pages into the queue already containing allocated pages. breaks i386:setup_buffers() because of this.
2002-10-06No more need to initialize the result list before uvm_pglistalloc.art1-2/+1
2002-06-25No \n at the end of a panic() message... I thought all occurences had beenmiod1-2/+2
squashed already.
2002-03-20Since the sgmap is used in interrupts protect the extent with splvm.art1-1/+7
nate@ ok. Should fix a bunch of random memory corruption problems on many machines. How we could live so long without it is beyond me. Now my traktor is happy.
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