#
d37b59c7 |
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11-Oct-2023 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: docs: add missing entries to kdoc in struct mei_cfg_idx Document all entries in struct mei_cfg_idx. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20231011074301.223879-3-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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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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#
5b063995 |
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07-Sep-2022 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: gsc: use polling instead of interrupts A work-around for a HW issue in XEHPSDV that manifests itself when SW reads a gsc register when gsc is sending an interrupt. The work-around is to disable interrupts and to use polling instead. Cc: James Ausmus <james.ausmus@intel.com> Signed-off-by: Vitaly Lubart <vitaly.lubart@intel.com> 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/20220907215113.1596567-7-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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#
a98c30fd |
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19-Apr-2022 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: add support for graphics system controller (gsc) devices GSC is a graphics system controller, based on CSE, it provides a chassis controller for graphics discrete cards, as well as it supports media protection on selected devices. mei_gsc binds to a auxiliary devices exposed by Intel discrete driver i915. v2: fix error check in mei_gsc_probe v3: update MODULE_LICENSE ("GPL" is preferred over "GPL v2" and they both map to GPL version 2) 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> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> #v3 Link: https://patchwork.freedesktop.org/patch/msgid/20220419193314.526966-3-daniele.ceraolospurio@intel.com
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#
2f79d3d1 |
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28-Jul-2020 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: add device kind to sysfs Some of the mei device heads are not generic and have a specific purpose, we need to announce it to the user space so it is possible to detect the correct device node via matching attributes. Generic heads are marked as 'mei' while special purpose heads have their own names. Currently we are adding 'itouch' string for Intel IPTS 1.0, 2.0 devices. This is done via new sysfs attribute 'kind'. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200728192242.3117779-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
45a2c762 |
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19-Jun-2020 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: me: constify the device parameter to the probe quirk The quirk_probe there is no writing to pci device hence we can constify the passed pci_dev pointer. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200619165121.2145330-2-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
8c289ea0 |
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19-Jun-2020 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: me: add tiger lake point device ids for H platforms. Add Tiger Lake device ids H for HECI1. TGH_H is also used in Tatlow SPS platform we need to disable the mei interface there. Cc: <stable@vger.kernel.org> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200619165121.2145330-7-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
f76d77f5 |
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19-Jun-2020 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: me: disable mei interface on Mehlow server platforms For SPS firmware versions 5.0 and newer the way detection has changed. The detection is done now via PCI_CFG_HFS_3 register. To prevent conflict the previous method will get sps_4 suffix Disable both CNP_H and CNP_H_3 interfaces. CNP_H_3 requires a separate configuration as it doesn't support DMA. Cc: <stable@vger.kernel.org> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200619165121.2145330-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
d76bc820 |
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28-Apr-2020 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: me: disable mei interface on LBG servers. Disable the MEI driver on LBG SPS (server) platforms, some corner flows such as recovery mode does not work, and the driver doesn't have working use cases. Cc: <stable@vger.kernel.org> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200428211200.12200-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
52f6efdf |
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06-Nov-2019 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: add trc detection register to sysfs The glitch detection HW (TRC) save it status information into TRC status register. Make it available to user-space via read-only sysfs file. The TRC register is availab for PCH15 gen and newer, for older platforms reading the sysfs file will fail with EOPNOTSUPP. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20191107104445.19101-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
261e071a |
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06-Nov-2019 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: abstract fw status register read. This is to allow working with mei devices embedded within another pci device, where mei device is represented as a platform child device and fw status registers are not necessarily resident in the device pci config space. Bump the copyright year to 2019 on the modified files. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20191106223841.15802-4-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
261b3e1f |
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06-Nov-2019 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: me: store irq number in the hw struct. Store irq number in hw struct to by used by synchronize_irq(). This is to allow working with mei devices embedded within another pci devices, via MFD framework, where mei device is represented as a platform device. Bump the copyright year to 2019 on hw-me.c and hw-me.h Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20191106223841.15802-3-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
907b471c |
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06-Nov-2019 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: me: mei_me_dev_init() use struct device instead of struct pci_dev. It's enough to bind mei_device with associated 'struct device' instead of actual 'struct pci_dev'. This is to allow working with mei devices embedded within another pci device, usually via MFD framework, where mei device is represented as a platform device. Bump copyright year to 2019 on effected files. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20191106223841.15802-2-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
f8204f0d |
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04-Oct-2019 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: avoid FW version request on Ibex Peak and earlier The fixed MKHI client on PCH 6 gen platforms does not support fw version retrieval. The error is not fatal, but it fills up the kernel logs and slows down the driver start. This patch disables requesting FW version on GEN6 and earlier platforms. Fixes warning: [ 15.964298] mei mei::55213584-9a29-4916-badf-0fb7ed682aeb:01: Could not read FW version [ 15.964301] mei mei::55213584-9a29-4916-badf-0fb7ed682aeb:01: version command failed -5 Cc: <stable@vger.kernel.org> +v4.18 Cc: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20191004181722.31374-1-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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#
7026a5fd |
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31-Jul-2018 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: define dma ring buffer sizes for PCH12 HW and newer Define dma ring buffer sizes for PCH12 (CLN HW and newer) 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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#
8c8d964c |
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23-Jul-2018 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: move hbuf_depth from the mei device to the hw modules The host buffer depth is hardware specific so it's better to handle it inside the me and txe hw modules. In me the depth is read from register in txe it's a constant number. The value is now retrieved via mei_hbuf_depth accessor, while it replaces mei_hbuf_max_len. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
f5ac3c49 |
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14-Jun-2017 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: me: use an index instead of a pointer for private data Device 'new_id' interface is useful for testing of not yet published hardware on older kernels and for internally used device ids on simulation platforms. However currently with the device configuration held in device_id driver data as a pointer to mei_cfg structure it is hard, as one need to locate the address of the correct structure. A recommended way of doing that is to use and index instead of a pointer. This patch adds a new list of configuration mei_cfg_list[] indexed via enum mei_cfg_idx. In addition it cleanups ich platform naming, renames legacy generation to ich and what was ich to ich10. 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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#
a2eb0fc0 |
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04-Dec-2016 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: fix the back to back interrupt handling Since the newer HW sports two interrupts causes we cannot just simply acknowledge the interrupts directly in the quick handler and store the cause in the member variable, as the cause will be overridden upon next interrupt while the interrupt thread was not yet scheduled handling the previous interrupt. The simple fix is to disable interrupts in quick handler and acknowledge and enabled them in the interrupt thread. 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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#
1fa55b4e |
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02-Aug-2015 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: me: d0i3: enable d0i3 interrupts D0i3 adds additional interrupt reason bit, therefore we add a variable intr_source to save the interrupt causes for further dispatching. The interrupt cause is saved in the irq quick handler to achieve unified behavior for both MSI enabled and shared interrupt platforms. 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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#
bb9f4d26 |
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02-Aug-2015 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: me: d0i3: add flag to indicate D0i3 support Detect d0i3 low power state during hw configuration, the value is set in HFS_1 pci config reigister. 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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#
2d1995fc |
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10-Feb-2015 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: me: change power gating function name conventions The current power gating naming was confusing, we wish to swap meanings of register and flow level power gating terms, For registers writing level use terms set and unset: mei_me_pg_set, mei_me_pg_unset For flow/high level use power gating enter and power gating exit terms mei_me_pg_enter_sync, mei_me_pg_exit_sync 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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#
edca5ea3 |
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19-Nov-2014 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: read and print all six FW status registers ME devices prior to PCH8 (Lynx Point) have two FW status registers, on PCH8 and newer excluding txe there are six FW status registers. 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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#
18caeb70 |
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12-Nov-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: kill cached host and me csr values Kill host_hw_status and me_hw_state from me hw structure that used to cache host and me csr values. We do not use the cached values across the function calls anymore 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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#
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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#
4ad96db6 |
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29-Sep-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: push pci cfg structure me hw Device specific configurations are currently only needed by me hw so we can remove it from txe Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
c919951d |
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12-May-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: me: move probe quirk to cfg structure Move quirk FW type detector to cfg structure 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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#
8d929d48 |
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12-May-2014 |
Alexander Usyskin <alexander.usyskin@intel.com> |
mei: add per device configuration Add mei_cfg structure that holds per device configuration data and hooks, as the first step we add firmware status register offsets 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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#
180ea05b |
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18-Mar-2014 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: me: add runtime pm framework Add runtime pm framework for ME devices. The runtime pm handlers are used to run me power gating isolation protocol 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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#
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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#
81ec5502 |
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14-Feb-2014 |
Bjorn Helgaas <bhelgaas@google.com> |
mei: Add include of <linux/irqreturn.h> We currently include <linux/irqreturn.h> in <linux/pci.h>, but I'm about to remove that from linux/pci.h, so add explicit includes where needed. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com>
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#
c8c8d080 |
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11-Mar-2013 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: revamp mei_data2slots 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>
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#
06ecd645 |
|
06-Feb-2013 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: move interrupt handlers to be me hw specific 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>
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#
827eef51 |
|
06-Feb-2013 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: separate compilation of the ME hardware specifics 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>
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#
52c34561 |
|
06-Feb-2013 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: initial extract of ME hw specifics from mei_device 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>
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#
9dc64d6a |
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08-Jan-2013 |
Tomas Winkler <tomas.winkler@intel.com> |
mei: rename interface to hw-me 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>
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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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