- 16 Jan, 2013 9 commits
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Samuel Iglesias Gonsalvez authored
We protect important data such as TX buffer pointer, nb_bytes counter and status registers of the device, from accessing several times at the same time. Signed-off-by:
Samuel Iglesias Gonsalvez <siglesias@igalia.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Samuel Iglesias Gonsalvez authored
Due to the IRQ processing, we can generate another IRQ that can come before we end the previous one, so we lost it. E.g. when transmitting a character. To allow the processing in SMP machines, we ack the IRQ at the beginning of the IRQ handler. Signed-off-by:
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Samuel Iglesias Gonsalvez authored
RX is enabled when the tty port is open, so no need to do it in initialization time: it can allow the device to receive characters but no TTY client is listening to them. It produced an infinite number of IRQ as RxFIFO is not read to clear that IRQ in the device, so it is still pending. Signed-off-by:
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Samuel Iglesias Gonsalvez authored
Depending of the device, it disables the TX mode in different places when there is no more data to transmit. This patch reorder them and disable the TX mode in the same place. Signed-off-by:
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Samuel Iglesias Gonsalvez authored
In case of several characters present in RxFIFO, they will have the flag of the previous one, no matter if the actual character was received properly or not. This patch fixes this bug. Signed-off-by:
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Samuel Iglesias Gonsalvez authored
Don't block the TTY client when sending characters. Signed-off-by:
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Samuel Iglesias Gonsalvez authored
Trying to setup the pppd server to use ipoctal's serial ports, it says the ports are busy the first time. If the operation is repeated, a kernel bug due to a dereference of a NULL pointer appears. Removing the one-access-only setup from the driver, removes this kernel bug. Signed-off-by:
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Alberto Garcia authored
It is an unsigned int so that check is pointless. Signed-off-by:
Alberto Garcia <agarcia@igalia.com> Signed-off-by:
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Alberto Garcia authored
In order to transmit data, the driver enables Tx and sleeps until *board_write is set to 1 by the interrupt handler. It can happen, though, that the data is sent even before the process is asleep. In this case *board_write must be set to 1 anyway, otherwise we will be waiting for a condition that will never be true. Signed-off-by:
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- 14 Jan, 2013 1 commit
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Tomas Winkler authored
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:
Tomas Winkler <tomas.winkler@intel.com> Signed-off-by:
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- 09 Jan, 2013 30 commits
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Tomas Winkler authored
Let mei_device_init initialize all the software constructs. Signed-off-by:
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Tomas Winkler authored
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:
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Tomas Winkler authored
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:
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Tomas Winkler authored
Add mei_host_set_ready function to enable the device and is_ready function to query the host and me readiness Signed-off-by:
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Tomas Winkler authored
Signed-off-by:
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Tomas Winkler authored
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:
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Tomas Winkler authored
The function mei_csr_clear_his is not implemented Signed-off-by:
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Tomas Winkler authored
need_reset is not used anymore Signed-off-by:
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Tomas Winkler authored
Fix the kernel doc for the functions in hw-me.c Signed-off-by:
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Tomas Winkler authored
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:
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Tomas Winkler authored
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:
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Tomas Winkler authored
the only real thing that left was mei_amthi_guid the rest was in the strings and comments Signed-off-by:
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Tomas Winkler authored
mei_task_initialize_clients and mei_initialize_clients are no longer among us Signed-off-by:
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Tomas Winkler authored
rename function to mei_me_cl_allocate to match the current names convention: mei_hbm_me_cl_allocate Signed-off-by:
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Tomas Winkler authored
read_pending never changes, it is a leftover from the old code. Signed-off-by:
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Tomas Winkler authored
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:
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Tomas Winkler authored
interface.h contains lower layer functionality Signed-off-by:
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Tomas Winkler authored
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:
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Tomas Winkler authored
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:
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Tomas Winkler authored
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:
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Tomas Winkler authored
hbm.h provides access host bus messaging functionality for other MEI layers Signed-off-by:
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George Zhang authored
VMCI head config patch Adds all the necessary files to enable building of the VMCI module with the Linux Makefiles and Kconfig systems. Also adds the header files used for building modules against the driver. Signed-off-by:
George Zhang <georgezhang@vmware.com> Acked-by:
Andy king <acking@vmware.com> Acked-by:
Dmitry Torokhov <dtor@vmware.com> Signed-off-by:
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George Zhang authored
VMCI host side driver code implementation. Signed-off-by:
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George Zhang authored
VMCI guest side driver code implementation. Signed-off-by:
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George Zhang authored
VMCI routing code is responsible for routing between various hosts/guests as well as routing in nested scenarios. Signed-off-by:
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George Zhang authored
VMCI resource tracks all used resources within the vmci code. Signed-off-by:
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George Zhang authored
VMCI queue pairs allow for bi-directional ordered communication between host and guests. Signed-off-by:
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George Zhang authored
VMCI handle code adds support for dynamic arrays that will grow if they need to. Signed-off-by:
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George Zhang authored
VMCI event code that manages event handlers and handles callbacks when specific events fire. Signed-off-by:
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George Zhang authored
VMCI driver code implementes both the host and guest personalities of the VMCI driver. Signed-off-by:
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