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path: root/drivers/misc/mei
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2013-03-29mei: move mei-me to separate moduleTomas Winkler
mei layer provides host bus message layer, client management, and os interface mei-me - provides access to ME hardware through the pci bus Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-29mei: prefix me hardware specific functions with mei_me_Tomas Winkler
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-29mei: rename function mei_hw_init to mei_startTomas Winkler
The hw initialization is now done as part of hw specific code this makes the name mei_hw_init little misleading. We rename it to mei_start in spirit of already existing functions mei_stop and mei_reset. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-29mei: ME structures should be initialized in mei_device_initTomas Winkler
mei_timer and mei_host_client_init belongs to mei framework and are not ME hw specific. AMTHIF and WD are available only for ME but are above the hardware layer so move the initialization back from mei_me_dev_init to mei_device_init. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-29mei: unregister watchdog from mei_stop functionTomas Winkler
we need to unregister watchdog device both in suspend and remove as the registration is recreated on reset Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-29mei: drop RECOVERING_FROM_RESET device stateTomas Winkler
ECOVERING_FROM_RESET device state is never set we can remove it Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-26Merge branch 'char-misc-linus' into char-misc-nextGreg Kroah-Hartman
This picks up the MEI fixes that we need in this branch now. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-25mei: add mei_irq_compl_handler functionTomas Winkler
similar to read/write add also irq completion handler that is called for the irq thread rename missnamed mei_irq_complete_handler to mei_cl_complete_handler as it operates on a single client Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-15mei: ME hardware reset needs to be synchronizedTomas Winkler
This fixes failure during initialization on Lynx Point LP devices. ME driver needs to release the device from the reset only after the FW has completed its flow and indicated it by delivering an interrupt to the host. This is the correct behavior for all the ME devices yet the the previous versions are less susceptive to the implementation that ignored FW reset completion indication. We add mei_me_hw_reset_release function which is called after reset from the interrupt thread or directly from mei_reset during power down. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-15mei: add mei_stop function to stop mei deviceTomas Winkler
mei_stop calls mei_reset with disabling the interrupts. It will have the same effect as the open code it replaces in the mei_remove. The reset sequence on remove is required for the Lynx Point LP devices to clean the reset state. mei_stop is called from mei_pci_suspend and mei_remove functions Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-15mei: add hw start callbackTomas Winkler
This callback wraps up hardware dependent details of the hardware initialization. This callback also contains host ready setting so we can remove host_set_ready callback In ME we switch to waiting on event so we can streamline the initialization flow. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-15mei: revamp mei_data2slotsTomas Winkler
1. Move the mei_data2slots to mei_dev.h as it will be used by the all supported HW. 2. Change return value from u8 to u32 to catch possible overflows 3. Eliminate computing the slots number twice in the same function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-07mei: fix undefined wd symbols when MEI_ME is not setTomas Winkler
Currently watchdog client is compiled with MEI and not with MEI_ME Fixes error: When CONFIG_WATCHDOG is not enabled: ERROR: "watchdog_unregister_device" [drivers/misc/mei/mei.ko] undefined! ERROR: "watchdog_register_device" [drivers/misc/mei/mei.ko] undefined Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-06mei: move clients cleanup code from init.c to client.cTomas Winkler
during reset we clean up client data structures we move that code into wrappers in client and call the wrappers Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-06mei: rename to mei_host_buffer_is_empty to hbuf_is_readyTomas Winkler
we rename the mei_host_buffer_is_empty to keep naming convention of hbuf and also make the query more generic to be correct also for other under laying hardware Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-06mei: move interrupt handlers to be me hw specificTomas Winkler
interrupt handler are platform specifics so we move them to hw-mei.c. For sake of that we need to export write, read, and complete handlers from the interrupt.c Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-06mei: separate compilation of the ME hardware specificsTomas Winkler
We add struct mei_hw_ops to virtualize access to hw specific configurations. This allows us to separate the compilation of the ME interface from the ME hardware specifics Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-06mei: initial extract of ME hw specifics from mei_deviceTomas Winkler
This is initial step of move the ME hw specifics out of mei_device structure into mei_me_hw Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-06mei: sperate interface and pci code into two filesTomas Winkler
leave misc file operations in the main and move PCI related code into pci-me Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-18Merge 3.8-rc4 into char-misc-nextGreg Kroah-Hartman
This brings in all of the mei and other fixes that are needed to continue development in this branch. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17mei: Fix some more kernel-doc typos in hw-me.cSedat Dilek
Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-14mei: drop the warning when cl is not initialized during unlinkingTomas Winkler
On systems where wd and amthif is not initialized we will hit cl->dev == NULL. This condition is okay so we don't need to be laud about it. Fixes the follwing warning during suspend [ 137.061985] WARNING: at drivers/misc/mei/client.c:315 mei_cl_unlink+0x86/0x90 [mei]() [ 137.061986] Hardware name: 530U3BI/530U4BI/530U4BH [ 137.062140] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek joydev coretemp kvm_intel snd_hda_intel snd_hda_codec kvm arc4 iwldvm snd_hwdep i915 snd_pcm mac80211 ghash_clmulni_intel snd_page_alloc aesni_intel snd_seq_midi xts snd_seq_midi_event aes_x86_64 rfcomm snd_rawmidi parport_pc bnep lrw snd_seq uvcvideo i2c_algo_bit ppdev gf128mul iwlwifi snd_timer drm_kms_helper ablk_helper cryptd drm snd_seq_device videobuf2_vmalloc psmouse videobuf2_memops snd cfg80211 btusb videobuf2_core soundcore videodev lp bluetooth samsung_laptop wmi microcode mei serio_raw mac_hid video hid_generic lpc_ich parport usbhid hid r8169 [ 137.062143] Pid: 2706, comm: kworker/u:15 Tainted: G D W 3.8.0-rc2-next20130109-1-iniza-generic #1 [ 137.062144] Call Trace: [ 137.062156] [<ffffffff8105860f>] warn_slowpath_common+0x7f/0xc0 [ 137.062159] [<ffffffff8135b1ea>] ? ioread32+0x3a/0x40 [ 137.062162] [<ffffffff8105866a>] warn_slowpath_null+0x1a/0x20 [ 137.062168] [<ffffffffa0076be6>] mei_cl_unlink+0x86/0x90 [mei] [ 137.062173] [<ffffffffa0071325>] mei_reset+0xc5/0x240 [mei] [ 137.062178] [<ffffffffa0073703>] mei_pci_resume+0xa3/0x110 [mei] [ 137.062183] [<ffffffff81379cae>] pci_pm_resume+0x7e/0xe0 [ 137.062185] [<ffffffff81379c30>] ? pci_pm_thaw+0x80/0x80 [ 137.062189] [<ffffffff8145a415>] dpm_run_callback.isra.6+0x25/0x50 [ 137.062192] [<ffffffff8145a6cf>] device_resume+0x9f/0x140 [ 137.062194] [<ffffffff8145a791>] async_resume+0x21/0x50 [ 137.062200] [<ffffffff810858b0>] async_run_entry_fn+0x90/0x1c0 [ 137.062203] [<ffffffff810778e5>] process_one_work+0x155/0x460 [ 137.062207] [<ffffffff81078578>] worker_thread+0x168/0x400 [ 137.062210] [<ffffffff81078410>] ? manage_workers+0x2b0/0x2b0 [ 137.062214] [<ffffffff8107d9f0>] kthread+0xc0/0xd0 [ 137.062218] [<ffffffff8107d930>] ? flush_kthread_worker+0xb0/0xb0 [ 137.062222] [<ffffffff816bac6c>] ret_from_fork+0x7c/0xb0 [ 137.062228] [<ffffffff8107d930>] ? flush_kthread_worker+0xb0/0xb0 Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: move work initialization to mei_device_initTomas Winkler
Let mei_device_init initialize all the software constructs. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: make host csr and me csr internal to hw-meTomas Winkler
Move csr reading into me hardware functional calls. Since we gave up on registers caching we remove some of the unnecessary queries in mei_hw_init ane mei_reset functions. We add mei_hw_config function to wrap up host buffer depth configuration. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: reenable mei_hcsr_set abstractionTomas Winkler
Now when mei_hcsr_set is local to hw-me.c we can benefit form the fact that it wraps H_IS removal from the host csr. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: abstract host and device readienessTomas Winkler
Add mei_host_set_ready function to enable the device and is_ready function to query the host and me readiness Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: use non cached hcsr for interrupt enablementTomas Winkler
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: don't use cached value for hcsr in mei_hw_resetTomas Winkler
Open code mei_hw_reset to avoid using cached hcsr. Using cached hcsr can cause unwanted side effects. Move mei_hw_restet function to hw-me.c as it is hw dependent Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: remove mei_csr_clear_his prototypeTomas Winkler
The function mei_csr_clear_his is not implemented Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: remove write only need_reset member of struct mei_deviceTomas Winkler
need_reset is not used anymore Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: hw-me.c fix kernel docTomas Winkler
Fix the kernel doc for the functions in hw-me.c Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: move MEI_IAMTHIF_IDLE to amthif host init functionTomas Winkler
Since the amthif state is not examined until amthif is connected we can safely move it to the amthif host init function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: normalize me host client linking routinesTomas Winkler
In order we can use the same code pattern for in-kernel and user space host clients we replace mei_cl_link_to_me with mei_cl_link function. We then have to keep me client lookupout of the new link function. The unlinking cannot be yet symetric due to amthif connection handling Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: rename remaining amthi strings to amthifTomas Winkler
the only real thing that left was mei_amthi_guid the rest was in the strings and comments Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: mei_dev.h - remove prototypes of dropped functionsTomas Winkler
mei_task_initialize_clients and mei_initialize_clients are no longer among us Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: move me client storage allocation to hbm.cTomas Winkler
rename function to mei_me_cl_allocate to match the current names convention: mei_hbm_me_cl_allocate Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: drop read_pending member form struct mei_clTomas Winkler
read_pending never changes, it is a leftover from the old code. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: rename interface to hw-meTomas Winkler
Rename hw-me.h to hw-me-regs.h as this file contains only register definitions. Files hw-me.[ch] now contains ME hw dependant functionality Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: move watchdog prototypes to mei_dev.h from interface.hTomas Winkler
interface.h contains lower layer functionality Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: implement mei_cl_connect functionTomas Winkler
Implement mei_cl_connect that warps host client parts of the connection and leave the ioctl specifics in the mei_ioctl_connect_client function. Move mei_ioctl_connect_client to main.c where it belongs Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: fix client functions namesTomas Winkler
Use common prefix for function names: mei_cl_ - for host clients mei_me_ - for me clients mei_io_ - for io callback functions Because mei_cl holds mei_device back pointer we can also drop the dev argument from the client functions add client.h header to export the clients API Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: move client functions to client.cTomas Winkler
This file now contains me and host client functions and also io callback helpers We also kill iorw.c which is no longer needed Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-08mei: add new hbm.h header to export hbm protocolTomas Winkler
hbm.h provides access host bus messaging functionality for other MEI layers Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-07mei: move hbm responses from interrupt.c to hbm.cTomas Winkler
1. Add common prefix mei_hbm_ to all handlers and made them static 2. Drop now useless function same_flow_addr Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-07mei: add common prefix to hbm functionTomas Winkler
1. use mei_hbm_ for basic host bus message function 2. use mei_hbm_cl prefix for host bus messages that operation on behalf of a client Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-07mei: use structured buffer for the write bufferTomas Winkler
We can drop useless castings and use proper types. We remove the casting in mei_hbm_hdr function and add new function mei_hbm_stop_request_prepare that utilize the new structure Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-07mei: simplify preparing client host bus messagesTomas Winkler
Define a new parent type mei_hbm_cl_cmd for hbm commands that are sent on behalf of specific ME client. This allows us compacting boilerplate code via mei_hbm_cl_hdr function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-07mei: drop nonexistent function prototypeTomas Winkler
mei_amthif_read_message prototype was not dropped in one of the moving/renaming patches Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-07mei: move host bus message handling to hbm.cTomas Winkler
for sake of more layered design we move host bus message handling to the new hbm.c file Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-07mei: move hw dependent functions to interface.cTomas Winkler
1. move direct register handling to interface.c and make them static 2. add new function mei_clear_interrupts that wraps direct register access 3. export other functions in mei_dev.h Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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