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2012-09-28brcmfmac: use define instead of hardcoded values.Hante Meuleman
brcmf_parse_tlvs was using hardcoded values. Reviewed-by: Arend Van Spriel <arend@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Signed-off-by: Hante Meuleman <meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28brcmfmac: use different fw api for encryption,auth. configHante Meuleman
This patch changes the commands being used to configure encryption and authentication. These new methods are needed for when p2p and hostap support are added. Reviewed-by: Arend Van Spriel <arend@broadcom.com> Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Signed-off-by: Hante Meuleman <meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28brcmfmac: use wait_event_timeout for fw control packets over usb.Hante Meuleman
firmware control packets over usb are async acked. This is awaited for by using interruptible wait. This can be interrupted by signal which results in undesirable behavior. Instead wait_event_timeout is used. Reviewed-by: Arend Van Spriel <arend@broadcom.com> Signed-off-by: Hante Meuleman <meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28b43legacy: Fix crash on unload when firmware not availableLarry Finger
When b43legacy is loaded without the firmware being available, a following unload generates a kernel NULL pointer dereference BUG as follows: [ 214.330789] BUG: unable to handle kernel NULL pointer dereference at 0000004c [ 214.330997] IP: [<c104c395>] drain_workqueue+0x15/0x170 [ 214.331179] *pde = 00000000 [ 214.331311] Oops: 0000 [#1] SMP [ 214.331471] Modules linked in: b43legacy(-) ssb pcmcia mac80211 cfg80211 af_packet mperf arc4 ppdev sr_mod cdrom sg shpchp yenta_socket pcmcia_rsrc pci_hotplug pcmcia_core battery parport_pc parport floppy container ac button edd autofs4 ohci_hcd ehci_hcd usbcore usb_common thermal processor scsi_dh_rdac scsi_dh_hp_sw scsi_dh_emc scsi_dh_alua scsi_dh fan thermal_sys hwmon ata_generic pata_ali libata [last unloaded: cfg80211] [ 214.333421] Pid: 3639, comm: modprobe Not tainted 3.6.0-rc6-wl+ #163 Source Technology VIC 9921/ALI Based Notebook [ 214.333580] EIP: 0060:[<c104c395>] EFLAGS: 00010246 CPU: 0 [ 214.333687] EIP is at drain_workqueue+0x15/0x170 [ 214.333788] EAX: c162ac40 EBX: cdfb8360 ECX: 0000002a EDX: 00002a2a [ 214.333890] ESI: 00000000 EDI: 00000000 EBP: cd767e7c ESP: cd767e5c [ 214.333957] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 [ 214.333957] CR0: 8005003b CR2: 0000004c CR3: 0c96a000 CR4: 00000090 [ 214.333957] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 214.333957] DR6: ffff0ff0 DR7: 00000400 [ 214.333957] Process modprobe (pid: 3639, ti=cd766000 task=cf802e90 task.ti=cd766000) [ 214.333957] Stack: [ 214.333957] 00000292 cd767e74 c12c5e09 00000296 00000296 cdfb8360 cdfb9220 00000000 [ 214.333957] cd767e90 c104c4fd cdfb8360 cdfb9220 cd682800 cd767ea4 d0c10184 cd682800 [ 214.333957] cd767ea4 cba31064 cd767eb8 d0867908 cba31064 d087e09c cd96f034 cd767ec4 [ 214.333957] Call Trace: [ 214.333957] [<c12c5e09>] ? skb_dequeue+0x49/0x60 [ 214.333957] [<c104c4fd>] destroy_workqueue+0xd/0x150 [ 214.333957] [<d0c10184>] ieee80211_unregister_hw+0xc4/0x100 [mac80211] [ 214.333957] [<d0867908>] b43legacy_remove+0x78/0x80 [b43legacy] [ 214.333957] [<d083654d>] ssb_device_remove+0x1d/0x30 [ssb] [ 214.333957] [<c126f15a>] __device_release_driver+0x5a/0xb0 [ 214.333957] [<c126fb07>] driver_detach+0x87/0x90 [ 214.333957] [<c126ef4c>] bus_remove_driver+0x6c/0xe0 [ 214.333957] [<c1270120>] driver_unregister+0x40/0x70 [ 214.333957] [<d083686b>] ssb_driver_unregister+0xb/0x10 [ssb] [ 214.333957] [<d087c488>] b43legacy_exit+0xd/0xf [b43legacy] [ 214.333957] [<c1089dde>] sys_delete_module+0x14e/0x2b0 [ 214.333957] [<c110a4a7>] ? vfs_write+0xf7/0x150 [ 214.333957] [<c1240050>] ? tty_write_lock+0x50/0x50 [ 214.333957] [<c110a6f8>] ? sys_write+0x38/0x70 [ 214.333957] [<c1397c55>] syscall_call+0x7/0xb [ 214.333957] Code: bc 27 00 00 00 00 a1 74 61 56 c1 55 89 e5 e8 a3 fc ff ff 5d c3 90 55 89 e5 57 56 89 c6 53 b8 40 ac 62 c1 83 ec 14 e8 bb b7 34 00 <8b> 46 4c 8d 50 01 85 c0 89 56 4c 75 03 83 0e 40 80 05 40 ac 62 [ 214.333957] EIP: [<c104c395>] drain_workqueue+0x15/0x170 SS:ESP 0068:cd767e5c [ 214.333957] CR2: 000000000000004c [ 214.341110] ---[ end trace c7e90ec026d875a6 ]---Index: wireless-testing/drivers/net/wireless/b43legacy/main.c The problem is fixed by making certain that the ucode pointer is not NULL before deregistering the driver in mac80211. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stable <stable@vger.kernel.org> [v 3.3.0+] Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28ath9k: Enable MCI for AR9565Bala Shanmugam
Signed-off-by: Bala Shanmugam <bkamatch@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28brcmfmac: use kcalloc() to prevent integer overflowDan Carpenter
The multiplication here looks like it could overflow. I've changed it to use kcalloc() to prevent that. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28ath9k: Fix chainmask selection for AR9462Sujith Manoharan
Force chain 1 to be used for CCK rates since the target power table stored in EEPROM is too high to transmit with both chains. This is needed to avoid regulatory violation. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: add inactivity deauth support for apKevin Gan
The firmware has support for this feature, so we offload it to firmware. In start_ap, driver passes the inactivity timeout value to firmware via TLVs and firmware will report STA_DEAUTH event to driver when inactivity timer is fired. Signed-off-by: Kevin Gan <ganhy@marvell.com> Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Nishant Sarmukadam <nishants@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: set txpd when send a mgmt frame for AP and GO modeStone Piao
Set packet type and packet offset in txpd when send a mgmt frame in AP and GO mode. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Kevin Gan <ganhy@marvell.com> Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: parse P2P IEs from beacon_dataStone Piao
Parse P2P IEs and set them to FW with related masks. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: add support for P2P GO in interface type changeStone Piao
When cfg80211 calls to change interface type for P2P GO, send P2P mode config commands to firmware and set bss role and bss mode accordingly. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: add support for P2P client in interface type changeStone Piao
When cfg80211 calls to change interface type for P2P client, send P2P mode config commands to firmware. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: add P2P interfaceStone Piao
Due to firmware design, driver needs to add a default P2P interface to implement find phase and action frame handshake. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: send firmware initialization commands synchronouslyStone Piao
The driver will send some commands to firmware during the initialization. Currently these commands are sent asynchronously, which means that we firstly insert all of them to a pre-allocated command queue, and then start to process them one by one. The command queue will soon be exhausted if we keep adding new initialization commands. This issue can be resolved by sending initialization commands synchronously because each command is consumed and the buffer is recycled before queuing next command. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: append each IE into a seperate IE bufferStone Piao
When scan is triggered from cfg80211, the request contains some IEs and we should parse all the IEs and append each IE into a seperate IE buffer. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: process remain on channel expired eventStone Piao
Process remain on channel expired event, and notify cfg80211. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: implement remain_on_channel and cancel_remain_on_channelStone Piao
Add a new command to implement remain_on_channel and cancel_remain_on_channel. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: report received management frames to cfg80211Stone Piao
Process the management frames received from firmware and report them to cfg80211. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Kevin Gan <ganhy@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: implement cfg80211 mgmt_frame_register handlerStone Piao
Add a new command to implement mgmt_frame_register. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: advertise mgmt_stype to cfg80211Stone Piao
Advertise supported management frame types to cfg80211. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: implement cfg80211 mgmt_tx handlerStone Piao
Implement mgmt_tx in cfg80211 ops through data path. Advertise probe resp offload and skip to send probe resp in AP or GO mode. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28mwifiex: fix coding style issueStone Piao
Remove unnecessary blank lines and extra tab. Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28ath9k: Add a debugfs file to adjust antenna diversitySujith Manoharan
Location: /<debugfs>/ieee80211/phy#/ath9k/diversity Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28ath9k: Handle errors properly in MCI initializationSujith Manoharan
The MCI initialization path has various points of failures, handle these to ensure that we bail out correctly in such cases. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28ath9k: Fix rx filtering issue for older chipsThomas Wagner
We need to have the promiscuous mode enabled for older chipsets so that the olderchips hardware does not filters out some valid/necessary frames that need to be sent to mac80211. Fix this by enabling promiscus mode for all the chipsets whose macversion <= AR9160 chipsets. This should fix https://bugzilla.kernel.org/show_bug.cgi?id=45591 shafi: made the fix generic by having the frame filtering disabled for chipsets older than AR9280. Cc: Javier Cardona <javier@cozybit.com> Signed-off-by: Thomas Wagner <Thomas.Wagner@hs-rm.de> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28bcma: change delays to follow timers-howto guideRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Cc: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-28Merge branch 'for-linville' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/luca/wl12xx
2012-09-28NFSv4: Ensure that idmap_pipe_downcall sanity-checks the downcall dataTrond Myklebust
Use the idmapper upcall data to verify that the legacy idmapper daemon is indeed responding to an upcall that we sent. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Bryan Schumaker <bjschuma@netapp.com>
2012-09-28NFSv4: Clean up the legacy idmapper upcallTrond Myklebust
Replace the BUG_ON(idmap->idmap_key_cons != NULL) with a WARN_ON_ONCE(). Then get rid of the ACCESS_ONCE(idmap->idmap_key_cons). Then add helper functions for starting, finishing and aborting the legacy upcall. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Bryan Schumaker <bjschuma@netapp.com>
2012-09-28Input: wacom - mark Intuos5 pad as in-prox when touching buttonsJason Gerecke
If the ExpressKeys on the Intuos5 are touched, they currently result an out-of-prox packet being sent even if the pad is already out of prox. This can cause some confusion in the X driver. To restore the expected semantics, we make being touched a sufficient condition to signal proximity. https://bugs.freedesktop.org/show_bug.cgi?id=54250 Reported-by: Timo Aaltonen <tjaalton@ubuntu.com> Signed-off-by: Jason Gerecke <killertofu@gmail.com> Reviewed-by: Chris Bagwell <chris@cnpbagwell.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-09-28Input: synaptics - adjust threshold for treating position values as negativeSeth Forshee
Commit c039450 (Input: synaptics - handle out of bounds values from the hardware) caused any hardware reported values over 7167 to be treated as a wrapped-around negative value. It turns out that some firmware uses the value 8176 to indicate a finger near the edge of the touchpad whose actual position cannot be determined. This value now gets treated as negative, which can cause pointer jumps and broken edge scrolling on these machines. I only know of one touchpad which reports negative values, and this hardware never reports any value lower than -8 (i.e. 8184). Moving the threshold for treating a value as negative up to 8176 should work fine then for any hardware we currently know about, and since we're dealing with unspecified behavior it's probably the best we can do. The special 8176 value is also likely to result in sudden jumps in position, so let's also clamp this to the maximum specified value for the axis. BugLink: http://bugs.launchpad.net/bugs/1046512 https://bugzilla.kernel.org/show_bug.cgi?id=46371 Cc: stable@vger.kernel.org Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org> Tested-by: Alan Swanson <swanson@ukfsn.org> Tested-by: Arteom <arutemus@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-09-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David S Miller: 1) Netfilter xt_limit module can use uninitialized rules, from Jan Engelhardt. 2) Wei Yongjun has found several more spots where error pointers were treated as NULL/non-NULL and vice versa. 3) bnx2x was converted to pci_io{,un}map() but one remaining plain iounmap() got missed. From Neil Horman. 4) Due to a fence-post type error in initialization of inetpeer entries (which is where we store the ICMP rate limiting information), we can erroneously drop ICMPs if the inetpeer was created right around when jiffies wraps. Fix from Nicolas Dichtel. 5) smsc75xx resume fix from Steve Glendinnig. 6) LAN87xx smsc chips need an explicit hardware init, from Marek Vasut. 7) qlcnic uses msleep() with locks held, fix from Narendra K. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: netdev: octeon: fix return value check in octeon_mgmt_init_phy() inetpeer: fix token initialization qlcnic: Fix scheduling while atomic bug bnx2: Clean up remaining iounmap net: phy: smsc: Implement PHY config_init for LAN87xx smsc75xx: fix resume after device reset netdev: pasemi: fix return value check in pasemi_mac_phy_init() team: fix return value check l2tp: fix return value check netfilter: xt_limit: have r->cost != 0 case work
2012-09-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs fixes from Al Viro: "A couple of fixes; one for automount/lazy umount race, another a classic "we don't protect the refcount transition to zero with the lock that protects looking for object in hash" kind of crap in lockd." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: close the race in nlmsvc_free_block() do_add_mount()/umount -l races
2012-09-28Merge branch 'for-linus-3.6-rc-final' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML fixes from Richard Weinberger. * 'for-linus-3.6-rc-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: Preinclude include/linux/kern_levels.h um: Fix IPC on um um: kill thread->forking um: let signal_delivered() do SIGTRAP on singlestepping into handler um: don't leak floating point state and segment registers on execve() um: take cleaning singlestep to start_thread()
2012-09-28Merge tag 'dm-3.6-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm Pull dm fixes from Alasdair G Kergon: "A few fixes for problems discovered during the 3.6 cycle. Of particular note, are fixes to the thin target's discard support, which I hope is finally working correctly; and fixes for multipath ioctls and device limits when there are no paths." * tag 'dm-3.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm: dm verity: fix overflow check dm thin: fix discard support for data devices dm thin: tidy discard support dm: retain table limits when swapping to new table with no devices dm table: clear add_random unless all devices have it set dm: handle requests beyond end of device instead of using BUG_ON dm mpath: only retry ioctl when no paths if queue_if_no_path set dm thin: do not set discard_zeroes_data
2012-09-28NFSv4: Remove BUG_ON() and ACCESS_ONCE() calls in the idmapperTrond Myklebust
The use of ACCESS_ONCE() is wrong, since the various routines that set/clear idmap->idmap_key_cons should be strictly ordered w.r.t. each other, and the idmap->idmap_mutex ensures that only one thread at a time may be in an upcall situation. Also replace the BUG_ON()s with WARN_ON_ONCE() where appropriate. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28iommu/amd: Report irq remapping through IOMMU-APIJoerg Roedel
Report the availability of irq remapping through the IOMMU-API to allow KVM device passthrough again without additional module parameter overrides. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/amd: Print message to system log when irq remapping is enabledJoerg Roedel
Print an indicator to dmesg to easily find out if interrupt remapping is enabled of a given system. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/irq: Use amd_iommu_irq_ops if supportedJoerg Roedel
Finally enable interrupt remapping for AMD systems. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/amd: Make sure irq remapping still works on dma init failureJoerg Roedel
Do not deinitialize the AMD IOMMU driver completly when interrupt remapping is already in use but the initialization of the DMA layer fails for some reason. Make sure the IOMMU can still be used to remap interrupts. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/amd: Add initialization routines for AMD interrupt remappingJoerg Roedel
Add the six routines required to setup interrupt remapping with the AMD IOMMU. Also put it all together into the AMD specific irq_remap_ops. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/amd: Add call-back routine for HPET MSIJoerg Roedel
Add a routine to setup a HPET MSI interrupt for remapping. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/amd: Implement MSI routines for interrupt remappingJoerg Roedel
Add routines to setup interrupt remapping for MSI interrupts. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/amd: Add IOAPIC remapping routinesJoerg Roedel
Add the routine to setup interrupt remapping for ioapic interrupts. Also add a routine to change the affinity of an irq and to free an irq allocation for interrupt remapping. The last two functions will also be used for MSI interrupts. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/amd: Add routines to manage irq remapping tablesJoerg Roedel
Add routines to: * Alloc remapping tables and single entries from these tables * Change entries in the tables * Free entries in the table Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/amd: Add IRTE invalidation routineJoerg Roedel
Add routine to invalidate the IOMMU cache for interupt translations. Also include the IRTE caches when flushing all IOMMU caches. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28thp: avoid VM_BUG_ON page_count(page) false positives in ↵Andrea Arcangeli
__collapse_huge_page_copy Speculative cache pagecache lookups can elevate the refcount from under us, so avoid the false positive. If the refcount is < 2 we'll be notified by a VM_BUG_ON in put_page_testzero as there are two put_page(src_page) in a row before returning from this function. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Rik van Riel <riel@redhat.com> Reviewed-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Hugh Dickins <hughd@google.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Petr Holasek <pholasek@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-28iommu/amd: Make sure IOMMU is not considered to translate itselfJoerg Roedel
The IVRS table usually includes the IOMMU device. But the IOMMU does never translate itself, so make sure the IOMMU driver knows this. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/amd: Split device table initialization into irq and dma partJoerg Roedel
When the IOMMU is enabled very early (as with irq-remapping) some devices are still in BIOS hand. When dma is blocked early this can cause lots of IO_PAGE_FAULTs. So delay the DMA initialization and do it right before the dma_ops are initialized. To be secure, block all interrupts by default when irq-remapping is enabled in the system. They will be reenabled on demand later. Without blocking interrupts by default devices can issue arbitrary interrupts by sending special DMA packets to the CPU that look like MSI messages. This is especially dangerous when a device is assigned to a KVM guest because the guest can then DoS the host. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28iommu/amd: Check if IOAPIC information is correctJoerg Roedel
When the IOAPIC information provided in the IVRS table is not correct or not complete the system may not boot at all when interrupt remapping is enabled. So check if this information is correct and print out a firmware bug message when it is not. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
generated by cgit (git 2.34.1) at 2025-09-24 16:37:08 +0000