#
5d33dc7d |
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11-Oct-2023 |
Randy Dunlap <rdunlap@infradead.org> |
misc: mei: hw.h: fix kernel-doc warnings Fix kernel-doc warnings in hw.h: hw.h:809: warning: missing initial short description on line: * struct hbm_client_dma_unmap_request hw.h:812: warning: contents before sections hw.h:825: warning: missing initial short description on line: * struct hbm_client_dma_response hw.h:828: warning: contents before sections Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20231012024845.29169-2-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
64459c62 |
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11-Oct-2023 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: docs: use correct structures name in kdoc Fix misalignment between structures names and their kdoc in hw.h Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20231011074301.223879-2-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
1fb1ea0d |
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10-Mar-2023 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
mei: Move uuid.h to the MEI namespace There is only a single user of the UUID uAPI, let's make it part of that user. The way it's done is to prevent compilation time breakage for the user space that does #include <linux/uuid.h> In the future MEI user space tools can switch over to use mei_uuid.h. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230310170747.22782-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
2af56dde |
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27-Sep-2022 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: adjust extended header kdocs Fix kdoc for struct mei_ext_hdr and mei_ext_begin(). Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220928004145.745803-4-daniele.ceraolospurio@intel.com
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#
4ed1cc99 |
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27-Sep-2022 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: add support to GSC extended header GSC extend header is of variable size and data is provided in a sgl list inside the header and not in the data buffers, need to enable the path. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Vitaly Lubart <vitaly.lubart@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220928004145.745803-2-daniele.ceraolospurio@intel.com
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#
95953618 |
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07-Sep-2022 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: extend timeouts on slow devices Parametrize operational timeouts in order to support slow firmware on some graphics devices. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-9-tomas.winkler@intel.com Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
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#
2cca3465 |
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11-Nov-2021 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: bus: add client dma interface Expose the client dma mapping via mei client bus interface. The client dma has to be mapped before the device is enabled, therefore we need to create device linking already during mapping and we need to unmap after the client is disable hence we need to postpone the unlink and flush till unmapping or when destroying the device. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Co-developed-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210420172755.12178-1-emmanuel.grumbach@intel.com Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20211112062814.7502-1-emmanuel.grumbach@intel.com
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#
40292383 |
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21-Jun-2021 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: revamp mei extension header structure layout. The mei extension header was build as array of flexible structures which will not work if actually more headers are added. (Currently only vtag header was used). Sparse reports: drivers/misc/mei/hw.h:253:32: warning: array of flexible structures Use basic type u8 for the variable sized extension. Define explicitly mei_ext_hdr_vtag structure. And also fix mei_ext_next() function to point correctly to the end of the header. Note: the headers are part of firmware interface and need to be __packed. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20210621193756.134027-2-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
09f8c33a |
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21-Jun-2021 |
Tamar Mashiah <tamar.mashiah@intel.com> |
mei: fix kdoc in the driver Over time the functions were renamed, but this was not always reflected in kdoc, fix that. Signed-off-by: Tamar Mashiah <tamar.mashiah@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20210621193756.134027-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
dfad8742 |
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06-Feb-2021 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: hbm: add client dma hbm messages Define structures for client DMA HBM protocol. The protocol requires passing dma buffer address and the buffer id. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20210206144325.25682-4-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
b7a48041 |
|
06-Feb-2021 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: add support for client dma capability Client DMA capability indicates whether the firmware supports setting up a direct DMA channel between the host and me client. The DMA capabilities are supported from firmware HBM version 2.2 and newer. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20210206144325.25682-3-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
b21de80a |
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27-Oct-2020 |
Gustavo A. R. Silva <gustavoars@kernel.org> |
mei: hw: Replace zero-length array with flexible-array member There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.9/process/deprecated.html#zero-length-and-one-element-arrays Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
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#
74a9c967 |
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18-Aug-2020 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: bump hbm version to 2.2 Bump HBM version to 2.2 to indicate vtag support. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200818115147.2567012-6-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
0cd7c01a |
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18-Aug-2020 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: add support for mei extended header. Add an extend header beyond existing 4 bytes of the mei message header. The extension is of variable length, starting with meta header that contains the number of headers and the overall size of the extended headers excluding meta header itself followed by TLV list of extended headers. Currently only supported extension is the vtag. From the HW perspective the extended headers is already part of the payload. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Link: https://lore.kernel.org/r/20200818115147.2567012-5-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
2dd1e5ae |
|
18-Aug-2020 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: add vtag support bit in client properties Vtag support is on a client basis, meaning not every client supports it. The vtag capability is communicated via the client properties structure during client enumeration process. Export the propertiy via sysfs. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200818115147.2567012-4-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
beb4e1e5 |
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18-Aug-2020 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: restrict vtag support to hbm version 2.2 The vtag allows partitioning the mei messages into virtual groups/channels. Vtags are supported for firmwares with HBM version 2.2 and newer and only when a firmware confirms the support via capability handshake. This change only define vtag restrictions in order to make the series bisectable. Everything will be enabled when driver HBM version is set to 2.2. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200818115147.2567012-3-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
e5cab1f9 |
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18-Aug-2020 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: hbm: add capabilities message The new capabilities command in HBM version 2.2 allows performing capabilities handshake between the firmware and the host driver. The driver requests a capability by setting the appropriate bit in 24bit wide bitmask and the fw responses with the bit set providing the requested capability is supported. Bump copyright year in affected files. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200818115147.2567012-2-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
92ca3dd4 |
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23-Jul-2020 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: hw: don't use one element arrays Replace the single element arrays with a simple value type u8 reserved, even thought is is not used for dynamically sized trailing elements it confuses the effort of replacing one-element arrays with flexible arrays for that purpose. Link: https://github.com/KSPP/linux/issues/79 Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200723145927.882743-7-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
e24ca925 |
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23-Jul-2020 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
Revert "mei: Avoid the use of one-element arrays" This reverts commit 3c3b7ddef7879abb2c42422e898145826c79e5f0, as it turns out Tomas made a better series of patches for this same issue. Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
3c3b7dde |
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14-Jul-2020 |
Gustavo A. R. Silva <gustavoars@kernel.org> |
mei: Avoid the use of one-element arrays One-element arrays are being deprecated[1]. Replace the one-element arrays with a simple value type u8 reserved, once this is just a placeholder for alignment. Also, while there, use the preferred form for passing a size of a struct. The alternative form where struct name is spelled out hurts readability and introduces an opportunity for a bug when the variable type is changed but the corresponding sizeof that is passed as argument is not. [1] https://github.com/KSPP/linux/issues/79 Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20200714214516.GA1040@embeddedor Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
f490e8ae |
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26-Feb-2020 |
Gustavo A. R. Silva <gustavo@embeddedor.com> |
misc: Replace zero-length array with flexible-array member The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Dimitri Sivanich <sivanich@hpe.com> Link: https://lore.kernel.org/r/20200226222240.GA14474@embeddedor Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
3aef021b |
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11-Feb-2020 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: limit number of bytes in mei header. The MEI message header provides only 9 bits for storing the message size, limiting to 511. In theory the host buffer (hbuf) can contain up to 1020 bytes (limited by byte = 255 * 4) With the current hardware and hbuf size 512, this is not a real issue, but as hardening approach we enforce the limit. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200211160522.7562-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
1e55b609 |
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11-Mar-2019 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: adjust the copyright notice in the files. Use unified version of the copyright notice in the files Update copyright years according the year the files were touched, except this patch and SPDX conversions. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
9fff0425 |
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11-Mar-2019 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: convert to SPDX license tags Replace boiler plate licenses texts with the SPDX license identifiers in the mei files header. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
4ad84cb5 |
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23-Dec-2018 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: squash single_recv_buf into one bit in client properties single_recv_buf member of struct mei_client_properties has a boolean value and can be represented in on bit, to free other 7 bits for another usage. 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>
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#
d2227583 |
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22-Nov-2018 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: bump hbm version to 2.1 Bump HBM version to 2.1 to indicate DMA transfer support. 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>
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#
6316321f |
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22-Nov-2018 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: dma ring: implement rx circular buffer logic Implement circular buffer protocol over receive dma buffer. Add extension to the mei message header that holds length of the buffer on the dma buffer. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
2513eb0d |
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22-Nov-2018 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: hw: add dma ring control block The DMA ring control block contains write and read indices for host and device circular buffers. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
c2bd9fc1 |
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31-Jul-2018 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: restrict dma ring support to hbm version 2.1 Only a firmware with version 2.1 and above supports dma ring feature. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
9d89ddfc |
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31-Jul-2018 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: hbm: introduce dma bit in the message header Add dma_ring bit in the mei message header for conveying that the message data itself are on the dma ring. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
ee7aba5a |
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31-Jul-2018 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: hbm: define dma ring setup protocol The protocol defines how to setup an I/O ring on top of host memory to utilize the device DMA engine for faster transport. Three memory buffers are allocated. A Host circular buffer for from the Host to Device communication. A Device circular buffer for from Device to the Host communication. And finally a Control block where the pointers for the both circular buffers are managed. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
3458657f |
|
06-Jun-2018 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: remove unused MEI_IAMTHIF_STALL_TIMER define MEI_IAMTHIF_STALL_TIMER is unused now and can be safely removed. 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>
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#
b6a38565 |
|
30-Apr-2017 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: hw: fix a spelling mistake notifcation -> notification Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
7ee7f45a |
|
10-Jan-2017 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: bus: enable OS version only for SPT and newer Sending OS version for support of TPM2_ChangeEPS() is required only for SPT FW (HMB version 2.0) and newer. On older platforms the command should be just ignored by the firmware but some older platforms misbehave so it's safer to send the command only if required. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=192051 Fixes: 7279b238bade (mei: send OS type to the FW) Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Tested-by: Jan Niehusmann <jan@gondor.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
#
27f476ea |
|
07-Feb-2016 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: hbm: send immediate reply flag in enum request Signal the FW that it can send an HBM enumeration answer immediately, without waiting for FW initialization completion, meaning before all the FW clients are ready and registered. Organize enumeration response options to enum as a byproduct. 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>
|
#
f4e06246 |
|
07-Feb-2016 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: fixed address clients for the new platforms Enable by default connection to fixed address clients from user-space for skylake and newer platform. 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>
|
#
d0df8dfb |
|
07-Feb-2016 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: amthif: don't drop read packets on timeout Since the driver now uses a list for storing read packets instead of single variable a pending read is no longer blocking other connections. A pending read will be discarded up the file closure. 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>
|
#
155718cf |
|
02-Aug-2015 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: hbm: bump supported HBM version to 2.0 HBM 2.0 version for Sunrise point Skylake (PCH) based devices Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
#
859ef2ff |
|
02-Aug-2015 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: me: d0i3: add d0i3 enter/exit state machine Rework mei power gating state machine to support entry and exit to and from D0i3 power state. The choice between legacy and D0i3 routines is conditioned on d0i3_supported flag. The patch introduces warning: drivers/misc/mei/hw-me.c:901:12: warning: ‘mei_me_d0i3_enter’ defined but not used [-Wunused-function] it will go away in consequent patch 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>
|
#
71e117f2 |
|
29-Jul-2015 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: hbm: add new error code MEI_CL_CONN_NOT_ALLOWED The device can return error 5 (NOT_ALLOWED) on connection attempt. This error can happen if: 1. An another connection attempt is in progress 2. There is an attempt to connect a fixed (connectionless) client 3. The number of available connections is exceeded (new in HBM 2.0) We should not hit that error unless there is an internal book keeping hiccup except option (3), therefore we translate the error code to errno EBUSY; 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>
|
#
4d99877d |
|
26-Jul-2015 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: enable async event notifications only from hbm version 2.0 Only FW version 2.0 and newer support the async event notification. For backward compatibility block the feature if the FW version is older then 2.0 Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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d3c1c809 |
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26-Jul-2015 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: define async notification hbm commands FW has gained new capability where a FW client can asynchronously notify the host that an event has occurred in its process. The notification doesn't provide any data and host may need to query further the FW client in order to get details of the event. Host can subscribe or unsubscribe to the event notification via designated HBM commands, and also the notification is carried on a new HBM command. This patch adds definitions of asynchronous notification HBM commands. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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18901357 |
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23-Jul-2015 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: disconnect on connection request timeout For the FW with HBM version >= 2.0 we don't need to reset the whole device in case of a particular client failing to connect, it is enough to send disconnect a request to bring the device to the stable state. 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>
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70ef835c |
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23-Jul-2015 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: support for dynamic clients HBM version 2.0 and above allows ME clients in the system to register/unregister after the system is fully initialized. Clients may be added or removed after enum_resp message was received 1. To preserve backward compatibility the driver can opt-in to receive client add messages by setting allow_add field in enum_req 2. A new client is added upon reception of MEI_HBM_ADD_CLIENT_REQ_CMD 3. A client is removed in a lazy manner when connection request respond with MEI_HBMS_CLIENT_NOT_FOUND status Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ce23139c |
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29-Sep-2014 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: fix kernel-doc warnings Add missed parameters descriptions and return values descriptions 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>
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a8605ea2 |
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29-Sep-2014 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: fix KDoc documentation formatting Fix Kdoc documentation formatting warnings genertaed by ./scripts/kernel-doc 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>
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89778d6e |
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21-Aug-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: add hbm commands return status values HBM uses global list of status values from which the values of particular commands are derived Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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3438c1f3 |
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21-Aug-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: use consistently me_addr in the hbm structures Use consistently me_addr name in hbm protocol structures to represent in firmware client address Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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61a1aea7 |
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18-Mar-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: me: bump hbm version to 1.1 to support power gating Communicate hbm version 1.1 to firmware to tell that we now support power gating isolation protocol Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ba9cdd0e |
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18-Mar-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: me: add pg exit and entry flow commands For power gating entry we write hbm pg entry request command and then we set pg register For power gating exit we clear pg register and wait for exit request hbm command. Exit power gating request might also be initiated by the firmware w/o explicit driver request The power gating state is tracked by pg_state member of me_hw Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ee7e5afd |
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18-Mar-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: condition PGI support on HW and HBM version Enable power gating isolation only if hw and fw support it. This is indicated by ME_PGIC_HRA bit in ME_CSR_HA register and on HBM protocol version. The information is exported to MEI layer through new pg_is_enabled hw op. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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4fcbc99b |
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18-Mar-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: implement power gating isolation hbm layer Add send message functions and receive dispatch stubs for power gating isolation hbm protocol. The protocol consist of requests for entering and exiting the power gating isolation state and their responses. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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285e2996 |
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17-Feb-2014 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: hbm: revamp client connect and disconnection status 1. Return -ENOTTY on client connect if the requested client was not found on the enumeration list or the client was internally disabled, in the later case FW will return NOT_FOUND. 2. Return -EBUSY if the client cannot be connected because of resource contention 3. Change response status enum to have MEI_CL_ prefix 4. Add function to translate response status to a string for more readable logging 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>
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7d93e58d |
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14-Jan-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: allow multiple retries if the hw reset has failed In some rare case mei hw reset may take long time to settle. Instead of blocking resume flow we span another driver reset flow in separate work context This allows as to shorten hw reset timeout to something more acceptable by DPM_WATCHDOG_TIMEOUT Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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479327fc |
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17-Dec-2013 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: enable marking internal commands Set hbm header bit 30 for internal commands This mark commands that are generated by the device driver Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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cd51ed64 |
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25-Dec-2012 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: simplify preparing client host bus messages 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>
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db7da79d |
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25-Dec-2012 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: mei_me_client is not hw API move to mei_dev.h Move struct mei_me_client from hw.h to mei_dev.h as it is not part of the hardware API. The structutre doesn't have to be packed. Add kdoc for this structure. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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66ef5ea9 |
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25-Dec-2012 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: extract device dependent constants into hw-me.h Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1d3f3da3 |
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25-Dec-2012 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: move internal host clients ids to mei_dev.h from hw.h Internal clients numbers are implementation choice and not defined by the hardware. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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aeba4a06 |
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11-Nov-2012 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: use the same bus msg for connect and disconnect request structs hbm_client_connect_request and hbm_client_disconnect_request have the same layout so we can drop the later Add kdoc for the request and response structure so it is clear they can be used for both purposes Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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3870c320 |
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01-Nov-2012 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: normalize timeouts definitions 1. The hardware book defines timeouts in seconds so we stick to this and define the wrapper function mei_secs_to_jiffies around msecs_to_jiffies to use be used instead multiplying by HZ 2. We add name space prefix MEI_ to all timer defines Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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9af51423 |
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28-Aug-2012 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: add lynx point pci device ids Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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6ddf3aea |
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06-Aug-2012 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: style : reformat PCI device IDs 1. reformat PCI ids list in hw.h for better readability 2. update some code and brand names Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ffc2825c |
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01-May-2012 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
Staging: mei: move the mei code out of staging It's been cleaned up, and there's nothing else left to do, so move it out of staging into drivers/misc/ where all can use it now. Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Oren Weil <oren.jer.weil@intel.com> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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