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* mei: add 9 series PCH mei device idsTomas Winkler2013-12-12
| | | | | | | | | | | commit 76a9635979e543f04a5885198e68ff28e3311b67 upstream. And Lynx Point H Refresh and Wildcat Point LP device ids. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: me: add Lynx Point Wellsburg work station device idTomas Winkler2013-12-12
| | | | | | | | | | commit 838b3a6d62413b336f3dde15ecff161070358957 upstream. add missing device id for LPT based work station Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: nfc: fix memory leak in error pathTomas Winkler2013-11-29
| | | | | | | | | | | | | | commit 4bff7208f332b2b1d7cf1338e50527441283a198 upstream. The flow may reach the err label without freeing cl and cl_info cl and cl_info weren't assigned to ndev->cl and cl_info so they weren't freed in mei_nfc_free called on error path Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: cancel stall timers in mei_resetAlexander Usyskin2013-10-05
| | | | | | | | | | | | | commit 4a704575cc1afb3b848f096778fa9b8d7b3d5813 upstream. Unset init_clients_timer and amthif_stall_timers in mei_reset in order to cancel timer ticking and hence avoid recursive reset calls. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: bus: stop wait for read during cl state transitionTomas Winkler2013-10-05
| | | | | | | | | | | | | | | | commit e2b31644e999e8bfe3efce880fb32840299abf41 upstream. Bus layer omitted check for client state transition while waiting for read completion The client state transition may occur for example as result of firmware initiated reset Add mei_cl_is_transitioning wrapper to reduce the code repetition.: Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: make me client counters less error proneTomas Winkler2013-10-05
| | | | | | | | | | | | | | | commit 1aee351a739153529fbb98ee461777b2abd5e1c9 upstream. 1. u8 counters are prone to hard to detect overflow: make them unsigned long to match bit_ functions argument type 2. don't check me_clients_num for negativity, it is unsigned. 3. init all the me client counters from one place Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: me: fix hardware reset flowTomas Winkler2013-09-08
| | | | | | | | | | | | | | | | | | | | | | | commit ff96066e3171acdea356b331163495957cb833d0 upstream. Both H_IS and H_IE needs to be set to receive H_RDY interrupt 1. Assert H_IS to clear the interrupts during hw reset and use mei_me_reg_write instead of mei_hcsr_set as the later strips down the H_IS 2. fix interrupt disablement embarrassing typo hcsr |= ~H_IE -> hcsr &= ~H_IE; this will remove the unwanted interrupt on power down 3. remove useless debug print outs Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Cc: Shuah Khan <shuah.kh@samsung.com> Cc: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: me: fix waiting for hw readyTomas Winkler2013-08-29
| | | | | | | | | | | | | | | | commit dab9bf41b23fe700c4a74133e41eb6a21706031e upstream. 1. MEI_INTEROP_TIMEOUT is in seconds not in jiffies so we use mei_secs_to_jiffies macro While cold boot is fast this is relevant in resume 2. wait_event_interruptible_timeout can return with -ERESTARTSYS so do not override it with -ETIMEDOUT 3.Adjust error message Tested-by: Shuah Khan <shuah.kh@samsung.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: don't have to clean the state on power upTomas Winkler2013-08-29
| | | | | | | | | | | | commit 99f22c4ef24cf87b0dae6aabe6b5e620b62961d9 upstream. When powering up, we don't have to clean up the device state nothing is connected. Tested-by: Shuah Khan <shuah.kh@samsung.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: me: fix reset state machineTomas Winkler2013-08-29
| | | | | | | | | | | | | | commit 315a383ad7dbd484fafb93ef08038e3dbafbb7a8 upstream. ME HW ready bit is down after hw reset was asserted or on error. Only on error we need to enter the reset flow, additional reset need to be prevented when reset was triggered during initialization , power up/down or a reset is already in progress Tested-by: Shuah Khan <shuah.kh@samsung.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: me: clear interrupts on the resume pathTomas Winkler2013-06-14
| | | | | | | | | | | | | | We need to clear pending interrupts on the resume path. This brings the device into defined state before starting the reset flow This should solve suspend/resume issues: mei_me : wait hw ready failed. status = 0x0 mei_me : version message write failed Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: nfc: fix nfc device freeingTomas Winkler2013-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nfc_dev is a static variable and is not cleaned properly upon reset mainly ndev->cl and ndev->cl_info are not set to NULL after freeing which mei_stop:198: mei_me 0000:00:16.0: stopping the device. [ 404.253427] general protection fault: 0000 [#2] SMP [ 404.253437] Modules linked in: mei_me(-) binfmt_misc snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device edd af_packet cpufreq_conservative cpufreq_userspace cpufreq_powersave fuse loop dm_mod hid_generic usbhid hid coretemp acpi_cpufreq mperf kvm_intel kvm crc32c_intel ghash_clmulni_intel aesni_intel ablk_helper cryptd lrw gf128mul snd_hda_codec_hdmi glue_helper aes_x86_64 e1000e snd_hda_intel snd_hda_codec ehci_pci iTCO_wdt iTCO_vendor_support ehci_hcd snd_hwdep xhci_hcd snd_pcm usbcore ptp mei sg microcode snd_timer pps_core i2c_i801 snd pcspkr battery rtc_cmos lpc_ich mfd_core soundcore usb_common snd_page_alloc ac ext3 jbd mbcache drm_kms_helper drm intel_agp i2c_algo_bit intel_gtt i2c_core sd_mod crc_t10dif thermal fan video button processor thermal_sys hwmon ahci libahci libata scsi_mod [last unloaded: mei_me] [ 404.253591] CPU: 0 PID: 5551 Comm: modprobe Tainted: G D W 3.10.0-rc3 #1 [ 404.253611] task: ffff880143cd8300 ti: ffff880144a2a000 task.ti: ffff880144a2a000 [ 404.253619] RIP: 0010:[<ffffffff81334e5d>] [<ffffffff81334e5d>] device_del+0x1d/0x1d0 [ 404.253638] RSP: 0018:ffff880144a2bcf8 EFLAGS: 00010206 [ 404.253645] RAX: 2020302e30202030 RBX: ffff880144fdb000 RCX: 0000000000000086 [ 404.253652] RDX: 0000000000000001 RSI: 0000000000000086 RDI: ffff880144fdb000 [ 404.253659] RBP: ffff880144a2bd18 R08: 0000000000000651 R09: 0000000000000006 [ 404.253666] R10: 0000000000000651 R11: 0000000000000006 R12: ffff880144fdb000 [ 404.253673] R13: ffff880149371098 R14: ffff880144482c00 R15: ffffffffa04710e0 [ 404.253681] FS: 00007f251c59a700(0000) GS:ffff88014e200000(0000) knlGS:0000000000000000 [ 404.253689] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 404.253696] CR2: ffffffffff600400 CR3: 0000000145319000 CR4: 00000000001407f0 [ 404.253703] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 404.253710] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 404.253716] Stack: [ 404.253720] ffff880144fdb000 ffff880143ffe000 ffff880149371098 ffffffffa0471000 [ 404.253732] ffff880144a2bd38 ffffffff8133502d ffff88014e20cf48 ffff880143ffe1d8 [ 404.253744] ffff880144a2bd48 ffffffffa02a4749 ffff880144a2bd58 ffffffffa02a4ba1 [ 404.253755] Call Trace: [ 404.253766] [<ffffffff8133502d>] device_unregister+0x1d/0x60 [ 404.253787] [<ffffffffa02a4749>] mei_cl_remove_device+0x9/0x10 [mei] [ 404.253804] [<ffffffffa02a4ba1>] mei_nfc_host_exit+0x21/0x30 [mei] [ 404.253819] [<ffffffffa029c2dd>] mei_stop+0x3d/0x90 [mei] [ 404.253830] [<ffffffffa046e220>] mei_me_remove+0x60/0xe0 [mei_me] [ 404.253843] [<ffffffff81278f37>] pci_device_remove+0x37/0xb0 [ 404.253855] [<ffffffff81337c68>] __device_release_driver+0x98/0x100 [ 404.253865] [<ffffffff81337d80>] driver_detach+0xb0/0xc0 [ 404.253876] [<ffffffff81336b4f>] bus_remove_driver+0x8f/0x120 [ 404.253891] [<ffffffff81075990>] ? try_to_wake_up+0x2b0/0x2b0 [ 404.253903] [<ffffffff81338a48>] driver_unregister+0x58/0x90 [ 404.253913] [<ffffffff8127906b>] pci_unregister_driver+0x2b/0xb0 [ 404.253924] [<ffffffffa046f244>] mei_me_driver_exit+0x10/0xdcc [mei_me] [ 404.253936] [<ffffffff810a50d8>] SyS_delete_module+0x198/0x2b0 [ 404.253949] [<ffffffff814850d9>] ? do_page_fault+0x9/0x10 [ 404.253961] [<ffffffff81489692>] system_call_fastpath+0x16/0x1b [ 404.253967] Code: 41 5c 41 5d 41 5e 41 5f c9 c3 0f 1f 40 00 55 48 89 e5 41 56 41 55 41 54 49 89 fc 53 48 8b 87 88 00 00 00 4c 8b 37 48 85 c0 74 18 <48> 8b 78 78 4c 89 e2 be 02 00 00 00 48 81 c7 f8 00 00 00 e8 3b [ 404.254048] RIP [<ffffffff81334e5d>] device_del+0x1d/0x1d0 Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: init: Flush scheduled work before resetting the deviceSamuel Ortiz2013-06-14
| | | | | | | | | | | | Flushing pending work items before resetting the device makes more sense than doing so afterwards. Some of them, like e.g. the NFC initialization one, find themselves with client IDs changed after the reset, eventually leading to trigger a client.c:mei_me_cl_by_id() warning after a few modprobe/rmmod cycles. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: bus: Reset event_cb when disabling a deviceSamuel Ortiz2013-05-21
| | | | | | | | | | After cancelling all reads from the disable hook, we need to reset the event_cb pointer as well or else we won't be able to set a new one up when re-enabling the device. Acked-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mei: fix out of array access to me clients arrayTomas Winkler2013-05-21
| | | | | | | | | | | The patch 9f81abdac362: "mei: implement mei_cl_connect function" from Jan 8, 2013, leads to the following static checker warning: "drivers/misc/mei/main.c:522 mei_ioctl_connect_client() warn: check 'dev->me_clients[]' for negative offsets (-2)" Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2013-04-30
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "Usual stuff, mostly comment fixes, typo fixes, printk fixes and small code cleanups" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (45 commits) mm: Convert print_symbol to %pSR gfs2: Convert print_symbol to %pSR m32r: Convert print_symbol to %pSR iostats.txt: add easy-to-find description for field 6 x86 cmpxchg.h: fix wrong comment treewide: Fix typo in printk and comments doc: devicetree: Fix various typos docbook: fix 8250 naming in device-drivers pata_pdc2027x: Fix compiler warning treewide: Fix typo in printks mei: Fix comments in drivers/misc/mei treewide: Fix typos in kernel messages pm44xx: Fix comment for "CONFIG_CPU_IDLE" doc: Fix typo "CONFIG_CGROUP_CGROUP_MEMCG_SWAP" mmzone: correct "pags" to "pages" in comment. kernel-parameters: remove outdated 'noresidual' parameter Remove spurious _H suffixes from ifdef comments sound: Remove stray pluses from Kconfig file radio-shark: Fix printk "CONFIG_LED_CLASS" doc: put proper reference to CONFIG_MODULE_SIG_ENFORCE ...
| * mei: Fix comments in drivers/misc/meiMasanari Iida2013-04-05
| | | | | | | | | | | | | | | | Correct typos and fix stray comments. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Winkler, Tomas <tomas.winkler@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | mei: fix krealloc() misuse in in mei_cl_irq_read_msg()Wei Yongjun2013-04-23
| | | | | | | | | | | | | | | | | | | | | | | | If krealloc() returns NULL, it doesn't free the original. So any code of the form 'foo = krealloc(foo, ...);' is almost certainly a bug. Introduced by commit fcb136e1ac5774909e0d85189f721b8dfa800e0f(mei: fix reading large reposnes) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: reduce flow control only for completed messagesTomas Winkler2013-04-23
| | | | | | | | | | | | | | | | | | | | | | | | | | This fixes bug when only first chunk of a large message split by hbuf_max_len is written to the hardware. All the consequent chunks will not get a new credit. A regression introduced by the commit 0ef319c93cebff9f82bdd0cdbb298f2dd00acda8 mei: streamline write complete flow function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: reseting -> resettingBill Nottingham2013-04-19
| | | | | | | | | | | | | | | | This enum leaks out to userspace via error messages, so fix the spelling. Signed-off-by: Bill Nottingham <notting@redhat.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: fix reading large reposnesTomas Winkler2013-04-19
| | | | | | | | | | | | | | | | | | | | While writting to device is limitted to max_msg_length advertized in client properites the read can be much longer delivered consequiting chunks. We use krealloc to enlarge the buffer when needed. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: revamp mei_irq_read_client_message functionTomas Winkler2013-04-19
| | | | | | | | | | | | | | | | | | | | | | 1. Rename the function and change parameters order, so that first parameter is mei_device 2. Simplify the function code flow 3. Rename helper functions to more self descriptive names 4. Use helpers common functions where possible Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: revamp mei_amthif_irq_read_messageTomas Winkler2013-04-19
| | | | | | | | | | | | | | | | Rename the function to mei_amthif_irq_read_msg and change parameters order Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: revamp hbm state machineTomas Winkler2013-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Rename init_clients_state to hbm_state and use MEI_HBM_ prefix for HBM states 2. Remove recvd_msg and use hbm state for synchronizing hbm protocol has successful start. We can wake up the hbm event from start response handler and remove the hack from the interrupt thread 3. mei_hbm_start_wait function encapsulate start completion waiting Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: wd: fix line over 80 charactersTomas Winkler2013-04-15
| | | | | | | | | | | | | | | | Fix checkpatch warning: WARNING: line over 80 characters Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: convert to use simple_open()Wei Yongjun2013-04-11
| | | | | | | | | | | | | | | | | | This removes an open coded simple_open() function and replaces file operations references to the function with simple_open() instead. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: nfc: Implement MEI bus opsSamuel Ortiz2013-04-10
| | | | | | | | | | | | | | | | | | | | | | | | The send ops for NFC builds the command header, updates the request id and then waits for an ACK. The recv ops check if it receives data or an ACK and in the latter case wakes the send ops up. The enable ops sends the NFC HECI connect command. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: nfc: Add NFC device to the MEI busSamuel Ortiz2013-04-10
| | | | | | | | | | | | | | | | | | After building its bus name as a string based on its vendor id and radio type, we can add it to the bus. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: nfc: Initial nfc implementationSamuel Ortiz2013-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | NFC ME device is exported through the MEI bus to be consumed by the NFC subsystem. NFC is represented by two mei clients: An info one and the actual NFC one. In order to properly build the ME id we first need to retrieve the firmware information from the info client and then disconnect from it. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: bus: Add device enabling and disabling APISamuel Ortiz2013-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | It should be left to the drivers to enable and disable the device on the MEI bus when e.g getting probed. For drivers to be able to safely call the enable and disable hooks, the mei_cl_ops must be set before it's probed and thus this should happen before registering the device on the MEI bus. Hence the mei_cl_add_device() prototype change. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: notify about the reset in error levelTomas Winkler2013-04-08
| | | | | | | | | | | | | | | | Display errors causing device reset using dev_err and not dev_dbg also change messages text to something more concise Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: add mei_cl_write functionTomas Winkler2013-04-08
| | | | | | | | | | | | | | | | | | consolidate write code to a specific me client in mei_cl_write function the function is called from mei device write handler and from mei_cl bus send function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: add debugfs hooksTomas Winkler2013-04-05
| | | | | | | | | | | | | | | | debugfs exposes device state and list of me clients and their properties Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: bus: Implement bus driver data setter/getterSamuel Ortiz2013-03-29
| | | | | | | | | | | | | | | | MEI drivers should be able to carry their private data around. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: bus: Synchronous API for the data transmissionSamuel Ortiz2013-03-29
| | | | | | | | | | | | | | | | | | | | | | | | Define a truly synchronous API for the bus Tx path by putting all pending request to the write list and wait for the interrupt tx handler to wake us up. The ___mei_cl_send() out path is also slightly reworked to make it look more like main.c:mei_write(). Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: bus: Call bus routines from the core codeSamuel Ortiz2013-03-29
| | | | | | | | | | | | | | | | | | Register the MEI bus type against the kernel core bus APIs and call the bus Rx handler from interrupt.c Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: bus: Add bus related structures to mei_clSamuel Ortiz2013-03-29
| | | | | | | | | | | | | | | | | | We keep track of all MEI devices on the bus through a specific linked list. We also have a mei_device instance in the mei_cl structure. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: bus: Initial implementation for I/O routinesSamuel Ortiz2013-03-29
| | | | | | | | | | | | Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: bus: Implement driver registrationSamuel Ortiz2013-03-29
| | | | | | | | | | | | Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: bus: Initial MEI Client bus type implementationSamuel Ortiz2013-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mei client bus will present some of the mei clients as devices for other standard subsystems Implement the probe, remove, match, device addtion routines, along with the sysfs and uevent ones. mei_cl_device_id is also added to mod_devicetable.h A mei-cleint-bus.txt document describing the rationale and the API usage is also added while ABI/testing/sysfs-bus-mei describeis the modalias ABI. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: move mei-me to separate moduleTomas Winkler2013-03-29
| | | | | | | | | | | | | | | | | | | | | | 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>
* | mei: prefix me hardware specific functions with mei_me_Tomas Winkler2013-03-29
| | | | | | | | | | Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: rename function mei_hw_init to mei_startTomas Winkler2013-03-29
| | | | | | | | | | | | | | | | | | | | | | 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>
* | mei: ME structures should be initialized in mei_device_initTomas Winkler2013-03-29
| | | | | | | | | | | | | | | | | | | | 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>
* | mei: unregister watchdog from mei_stop functionTomas Winkler2013-03-29
| | | | | | | | | | | | | | | | 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>
* | mei: drop RECOVERING_FROM_RESET device stateTomas Winkler2013-03-29
| | | | | | | | | | | | | | | | 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>
* | Merge branch 'char-misc-linus' into char-misc-nextGreg Kroah-Hartman2013-03-26
|\ \ | | | | | | | | | | | | | | | This picks up the MEI fixes that we need in this branch now. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | mei: ME hardware reset needs to be synchronizedTomas Winkler2013-03-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | mei: add mei_stop function to stop mei deviceTomas Winkler2013-03-15
| |/ | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | mei: add mei_irq_compl_handler functionTomas Winkler2013-03-25
| | | | | | | | | | | | | | | | | | | | | | 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>
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