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2022-08-21intel_th: pci: Add Raptor Lake-S CPU supportAlexander Shishkin1-0/+5
[ Upstream commit ff46a601afc5a66a81c3945b83d0a2caeb88e8bc ] Add support for the Trace Hub in Raptor Lake-S CPU. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable <stable@kernel.org> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20220705082637.59979-7-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-21intel_th: pci: Add Raptor Lake-S PCH supportAlexander Shishkin1-0/+5
[ Upstream commit 23e2de5826e2fc4dd43e08bab3a2ea1a5338b063 ] Add support for the Trace Hub in Raptor Lake-S PCH. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable <stable@kernel.org> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20220705082637.59979-6-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-21intel_th: pci: Add Meteor Lake-P supportAlexander Shishkin1-0/+5
[ Upstream commit 802a9a0b1d91274ef10d9fe429b4cc1e8c200aef ] Add support for the Trace Hub in Meteor Lake-P. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable <stable@kernel.org> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20220705082637.59979-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-21intel_th: msu: Fix vmalloced buffersAlexander Shishkin1-2/+12
[ Upstream commit ac12ad3ccf6d386e64a9d6a890595a2509d24edd ] After commit f5ff79fddf0e ("dma-mapping: remove CONFIG_DMA_REMAP") there's a chance of DMA buffer getting allocated via vmalloc(), which messes up the mmapping code: > RIP: msc_mmap_fault [intel_th_msu] > Call Trace: > <TASK> > __do_fault > do_fault ... Fix this by accounting for vmalloc possibility. Fixes: ba39bd830605 ("intel_th: msu: Switch over to scatterlist") Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20220705082637.59979-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-21intel_th: msu-sink: Potential dereference of null pointerJiasheng Jiang1-0/+3
[ Upstream commit 82f76a4a720791d889de775b5f7541d601efc8bd ] The return value of dma_alloc_coherent() needs to be checked. To avoid use of null pointer in sg_set_buf() in case of the failure of alloc. Fixes: f220df66f676 ("intel_th: msu-sink: An example msu buffer "sink"") Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20220705082637.59979-3-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-21intel_th: Fix a resource leak in an error handling pathChristophe JAILLET1-2/+8
[ Upstream commit 086c28ab7c5699256aced0049aae9c42f1410313 ] If an error occurs after calling 'pci_alloc_irq_vectors()', 'pci_free_irq_vectors()' must be called as already done in the remove function. Fixes: 7b7036d47c35 ("intel_th: pci: Use MSI interrupt signalling") Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20220705082637.59979-2-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20intel_th: Wait until port is in reset before programming itAlexander Shishkin3-0/+36
[ Upstream commit ab1afed701d2db7eb35c1a2526a29067a38e93d1 ] Some devices don't drain their pipelines if we don't make sure that the corresponding output port is in reset before programming it for a new trace capture, resulting in bits of old trace appearing in the new trace capture. Fix that by explicitly making sure the reset is asserted before programming new trace capture. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20210621151246.31891-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-11intel_th: pci: Add Alder Lake-M supportAlexander Shishkin1-0/+5
commit 48cb17531b15967d9d3f34c770a25cc6c4ca6ad1 upstream. This adds support for the Trace Hub in Alder Lake-M PCH. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org # v4.14+ Link: https://lore.kernel.org/r/20210414171251.14672-8-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-11intel_th: Consistency and off-by-one fixPavel Machek1-2/+2
[ Upstream commit 18ffbc47d45a1489b664dd68fb3a7610a6e1dea3 ] Consistently use "< ... +1" in for loops. Fix of-by-one in for_each_set_bit(). Signed-off-by: Pavel Machek <pavel@denx.de> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/lkml/20190724095841.GA6952@amd/ Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210414171251.14672-6-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-11intel_th: pci: Add Rocket Lake CPU supportAlexander Shishkin1-0/+5
commit 9f7f2a5e01ab4ee56b6d9c0572536fe5fd56e376 upstream. This adds support for the Trace Hub in Rocket Lake CPUs. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable <stable@vger.kernel.org> # v4.14+ Link: https://lore.kernel.org/r/20210414171251.14672-7-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-27intel_th: pci: Add Alder Lake-P supportAlexander Shishkin1-0/+5
commit cb5c681ab9037e25fcca20689c82cf034566d610 upstream. This adds support for the Trace Hub in Alder Lake-P. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20210115195917.3184-3-alexander.shishkin@linux.intel.com Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-05intel_th: pci: Add Alder Lake CPU supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Alder Lake CPU. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20201005071319.78508-9-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-05intel_th: pci: Add Alder Lake-S supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Alder Lake-S. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20201005071319.78508-8-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-08-24treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva1-2/+2
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-07-10intel_th: Fix a NULL dereference when hub driver is not loadedAlexander Shishkin2-6/+19
Connecting master to an output port when GTH driver module is not loaded triggers a NULL dereference: > RIP: 0010:intel_th_set_output+0x35/0x70 [intel_th] > Call Trace: > ? sth_stm_link+0x12/0x20 [intel_th_sth] > stm_source_link_store+0x164/0x270 [stm_core] > dev_attr_store+0x17/0x30 > sysfs_kf_write+0x3e/0x50 > kernfs_fop_write+0xda/0x1b0 > __vfs_write+0x1b/0x40 > vfs_write+0xb9/0x1a0 > ksys_write+0x67/0xe0 > __x64_sys_write+0x1a/0x20 > do_syscall_64+0x57/0x1d0 > entry_SYSCALL_64_after_hwframe+0x44/0xa9 Make sure the module in question is loaded and return an error if not. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Fixes: 39f4034693b7c ("intel_th: Add driver infrastructure for Intel(R) Trace Hub devices") Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reported-by: Ammy Yi <ammy.yi@intel.com> Tested-by: Ammy Yi <ammy.yi@intel.com> Cc: stable@vger.kernel.org # v4.4 Link: https://lore.kernel.org/r/20200706161339.55468-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-10intel_th: pci: Add Emmitsburg PCH supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Emmitsburg PCH. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org # v4.14+ Link: https://lore.kernel.org/r/20200706161339.55468-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-10intel_th: pci: Add Tiger Lake PCH-H supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Tiger Lake PCH-H. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org # v4.14+ Link: https://lore.kernel.org/r/20200706161339.55468-3-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-10intel_th: pci: Add Jasper Lake CPU supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Jasper Lake CPU. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org # v4.14+ Link: https://lore.kernel.org/r/20200706161339.55468-2-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-24intel_th: msu: Make stopping the trace optionalAlexander Shishkin1-1/+37
Some use cases prefer to keep collecting the trace data into the last available window while the other windows are being offloaded instead of stopping the trace. In this scenario, the window switch happens automatically when the next window becomes available again. Add an option to allow this and a sysfs attribute to enable it. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20200319085152.52183-1-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-23Merge 5.6-rc7 into char-misc-nextGreg Kroah-Hartman2-6/+12
We need the char/misc driver fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18intel_th: pci: Add Elkhart Lake CPU supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Elkhart Lake CPU. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200317062215.15598-7-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18intel_th: Fix user-visible error codesAlexander Shishkin1-3/+3
There are a few places in the driver that end up returning ENOTSUPP to the user, replace those with EINVAL. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Fixes: ba82664c134ef ("intel_th: Add Memory Storage Unit driver") Cc: stable@vger.kernel.org # v4.4+ Link: https://lore.kernel.org/r/20200317062215.15598-6-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18intel_th: msu: Fix the unexpected state warningAlexander Shishkin1-3/+4
The unexpected state warning should only warn on illegal state transitions. Fix that. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Fixes: 615c164da0eb4 ("intel_th: msu: Introduce buffer interface") Cc: stable@vger.kernel.org # v5.4+ Link: https://lore.kernel.org/r/20200317062215.15598-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18intel_th: Disallow multi mode on devices where it's brokenAlexander Shishkin3-4/+17
Some versions of Intel TH have an issue that prevents the multi mode of MSU from working correctly, resulting in no trace data and potentially stuck MSU pipeline. Disable multi mode on such devices. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20200317062215.15598-2-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17intel_th: msu: Fix window switching without windowsAlexander Shishkin1-5/+9
Commit 6cac7866c2741 ("intel_th: msu: Add a sysfs attribute to trigger window switch") adds a NULL pointer dereference in the case when there are no windows allocated: > BUG: kernel NULL pointer dereference, address: 0000000000000000 > #PF: supervisor read access in kernel mode > #PF: error_code(0x0000) - not-present page > PGD 0 P4D 0 > Oops: 0000 1 SMP > CPU: 5 PID: 1110 Comm: bash Not tainted 5.5.0-rc1+ #1 > RIP: 0010:msc_win_switch+0xa/0x80 [intel_th_msu] > Call Trace: > ? win_switch_store+0x9b/0xc0 [intel_th_msu] > dev_attr_store+0x17/0x30 > sysfs_kf_write+0x3e/0x50 > kernfs_fop_write+0xda/0x1b0 > __vfs_write+0x1b/0x40 > vfs_write+0xb9/0x1a0 > ksys_write+0x67/0xe0 > __x64_sys_write+0x1a/0x20 > do_syscall_64+0x57/0x1d0 > entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fix that by disallowing window switching with multiwindow buffers without windows. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Fixes: 6cac7866c274 ("intel_th: msu: Add a sysfs attribute to trigger window switch") Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reported-by: Ammy Yi <ammy.yi@intel.com> Tested-by: Ammy Yi <ammy.yi@intel.com> Cc: stable@vger.kernel.org # v5.2+ Link: https://lore.kernel.org/r/20191217115527.74383-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17intel_th: Fix freeing IRQsAlexander Shishkin2-3/+6
Commit aac8da65174a ("intel_th: msu: Start handling IRQs") implicitly relies on the use of devm_request_irq() to subsequently free the irqs on device removal, but in case of the pci_free_irq_vectors() API, the handlers need to be freed before it is called. Therefore, at the moment the driver's remove path trips a BUG_ON(irq_has_action()): > kernel BUG at drivers/pci/msi.c:375! > invalid opcode: 0000 1 SMP > CPU: 2 PID: 818 Comm: rmmod Not tainted 5.5.0-rc1+ #1 > RIP: 0010:free_msi_irqs+0x67/0x1c0 > pci_disable_msi+0x116/0x150 > pci_free_irq_vectors+0x1b/0x20 > intel_th_pci_remove+0x22/0x30 [intel_th_pci] > pci_device_remove+0x3e/0xb0 > device_release_driver_internal+0xf0/0x1c0 > driver_detach+0x4c/0x8f > bus_remove_driver+0x5c/0xd0 > driver_unregister+0x31/0x50 > pci_unregister_driver+0x40/0x90 > intel_th_pci_driver_exit+0x10/0xad6 [intel_th_pci] > __x64_sys_delete_module+0x147/0x290 > ? exit_to_usermode_loop+0xd7/0x120 > do_syscall_64+0x57/0x1b0 > entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fix this by explicitly freeing irqs before freeing the vectors. We keep using the devm_* variants because they are still useful in early error paths. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Fixes: aac8da65174a ("intel_th: msu: Start handling IRQs") Reported-by: Ammy Yi <ammy.yi@intel.com> Tested-by: Ammy Yi <ammy.yi@intel.com> Cc: stable@vger.kernel.org # v5.2+ Link: https://lore.kernel.org/r/20191217115527.74383-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17intel_th: pci: Add Elkhart Lake SOC supportAlexander Shishkin1-0/+5
This adds support for Intel Trace Hub in Elkhart Lake. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20191217115527.74383-3-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17intel_th: pci: Add Comet Lake PCH-V supportAlexander Shishkin1-0/+5
This adds Intel(R) Trace Hub PCI ID for Comet Lake PCH-V. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20191217115527.74383-2-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-20intel_th: pci: Add Tiger Lake CPU supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Tiger Lake CPU. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20191120130806.44028-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-20intel_th: pci: Add Ice Lake CPU supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Ice Lake CPU. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20191120130806.44028-3-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-20intel_th: Fix a double put_device() in error pathAlexander Shishkin1-6/+2
Commit a753bfcfdb1f ("intel_th: Make the switch allocate its subdevices") factored out intel_th_subdevice_alloc() from intel_th_populate(), but got the error path wrong, resulting in two instances of a double put_device() on a freshly initialized, but not 'added' device. Fix this by only doing one put_device() in the error path. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Fixes: a753bfcfdb1f ("intel_th: Make the switch allocate its subdevices") Reported-by: Wen Yang <wenyang@linux.alibaba.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org # v4.14+ Link: https://lore.kernel.org/r/20191120130806.44028-2-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-04intel_th: pci: Add Jasper Lake PCH supportAlexander Shishkin1-0/+5
This adds support for Intel TH on Jasper Lake PCH. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20191028070651.9770-8-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-04intel_th: pci: Add Comet Lake PCH supportAlexander Shishkin1-0/+5
This adds support for Intel TH on Comet Lake PCH. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20191028070651.9770-7-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-04intel_th: msu: Fix possible memory leak in mode_store()Wei Yongjun1-1/+3
'mode' is malloced in mode_store() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/lkml/20190801013825.182543-1-weiyongjun1@huawei.com/ Link: https://lore.kernel.org/r/20191028070651.9770-6-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-04intel_th: msu: Fix overflow in shift of an unsigned intColin Ian King1-1/+1
The shift of the unsigned int win->nr_blocks by PAGE_SHIFT may potentially overflow. Note that the intended return of this shift is expected to be a size_t however the shift is being performed as an unsigned int. Fix this by casting win->nr_blocks to a size_t before performing the shift. Addresses-Coverity: ("Unintentional integer overflow") Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/lkml/20190726113151.8967-1-colin.king@canonical.com/ Link: https://lore.kernel.org/r/20191028070651.9770-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-04intel_th: msu: Fix missing allocation failure check on a kstrndupColin Ian King1-0/+3
Commit 615c164da0eb ("intel_th: msu: Introduce buffer interface") forgot to add a NULL pointer check for the value returned from kstrdup(), which will be troublesome if the allocation fails. Fix that by adding the check. Addresses-Coverity: ("Dereference null return") Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface") Signed-off-by: Colin Ian King <colin.king@canonical.com> [alexander.shishkin: amended the commit message] Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/lkml/20190726120421.9650-1-colin.king@canonical.com/ Link: https://lore.kernel.org/r/20191028070651.9770-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-04intel_th: msu: Fix an uninitialized mutexAlexander Shishkin1-1/+1
Commit 615c164da0eb ("intel_th: msu: Introduce buffer interface") added a mutex that it forgot to initialize, resulting in a lockdep splat. Fix that by initializing the mutex statically. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface") Link: https://lore.kernel.org/r/20191028070651.9770-3-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-04intel_th: gth: Fix the window switching sequenceAlexander Shishkin1-0/+3
Commit 8116db57cf16 ("intel_th: Add switch triggering support") added a trigger assertion of the CTS, but forgot to de-assert it at the end of the sequence. This results in window switches randomly not happening. Fix that by de-asserting the trigger at the end of the window switch sequence. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Fixes: 8116db57cf16 ("intel_th: Add switch triggering support") Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20191028070651.9770-2-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-18Merge tag 'char-misc-5.4-rc1' of ↵Linus Torvalds4-100/+576
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver pull request for 5.4-rc1. As has been happening in previous releases, more and more individual driver subsystem trees are ending up in here. Now if that is good or bad I can't tell, but hopefully it makes your life easier as it's more of an aggregation of trees together to one merge point for you. Anyway, lots of stuff in here: - habanalabs driver updates - thunderbolt driver updates - misc driver updates - coresight and intel_th hwtracing driver updates - fpga driver updates - extcon driver updates - some dma driver updates - char driver updates - android binder driver updates - nvmem driver updates - phy driver updates - parport driver fixes - pcmcia driver fix - uio driver updates - w1 driver updates - configfs fixes - other assorted driver updates All of these have been in linux-next for a long time with no reported issues" * tag 'char-misc-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (200 commits) misc: mic: Use PTR_ERR_OR_ZERO rather than its implementation habanalabs: correctly cast variable to __le32 habanalabs: show correct id in error print habanalabs: stop using the acronym KMD habanalabs: display card name as sensors header habanalabs: add uapi to retrieve aggregate H/W events habanalabs: add uapi to retrieve device utilization habanalabs: Make the Coresight timestamp perpetual habanalabs: explicitly set the queue-id enumerated numbers habanalabs: print to kernel log when reset is finished habanalabs: replace __le32_to_cpu with le32_to_cpu habanalabs: replace __cpu_to_le32/64 with cpu_to_le32/64 habanalabs: Handle HW_IP_INFO if device disabled or in reset habanalabs: Expose devices after initialization is done habanalabs: improve security in Debug IOCTL habanalabs: use default structure for user input in Debug IOCTL habanalabs: Add descriptive name to PSOC app status register habanalabs: Add descriptive names to PSOC scratch-pad registers habanalabs: create two char devices per ASIC habanalabs: change device_setup_cdev() to be more generic ...
2019-09-18Merge tag 'leds-for-5.4-rc1' of ↵Linus Torvalds1-9/+1
git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds Pull LED updates from Jacek Anaszewski: "In this cycle we've finally managed to contribute the patch set sorting out LED naming issues. Besides that there are many changes scattered among various LED class drivers and triggers. LED naming related improvements: - add new 'function' and 'color' fwnode properties and deprecate 'label' property which has been frequently abused for conveying vendor specific names that have been available in sysfs anyway - introduce a set of standard LED_FUNCTION* definitions - introduce a set of standard LED_COLOR_ID* definitions - add a new {devm_}led_classdev_register_ext() API with the capability of automatic LED name composition basing on the properties available in the passed fwnode; the function is backwards compatible in a sense that it uses 'label' data, if present in the fwnode, for creating LED name - add tools/leds/get_led_device_info.sh script for retrieving LED vendor, product and bus names, if applicable; it also performs basic validation of an LED name - update following drivers and their DT bindings to use the new LED registration API: - leds-an30259a, leds-gpio, leds-as3645a, leds-aat1290, leds-cr0014114, leds-lm3601x, leds-lm3692x, leds-lp8860, leds-lt3593, leds-sc27xx-blt Other LED class improvements: - replace {devm_}led_classdev_register() macros with inlines - allow to call led_classdev_unregister() unconditionally - switch to use fwnode instead of be stuck with OF one LED triggers improvements: - led-triggers: - fix dereferencing of null pointer - fix a memory leak bug - ledtrig-gpio: - GPIO 0 is valid Drop superseeded apu2/3 support from leds-apu since for apu2+ a newer, more complete driver exists, based on a generic driver for the AMD SOCs gpio-controller, supporting LEDs as well other devices: - drop profile field from priv data - drop iosize field from priv data - drop enum_apu_led_platform_types - drop superseeded apu2/3 led support - add pr_fmt prefix for better log output - fix error message on probing failure Other misc fixes and improvements to existing LED class drivers: - leds-ns2, leds-max77650: - add of_node_put() before return - leds-pwm, leds-is31fl32xx: - use struct_size() helper - leds-lm3697, leds-lm36274, leds-lm3532: - switch to use fwnode_property_count_uXX() - leds-lm3532: - fix brightness control for i2c mode - change the define for the fs current register - fixes for the driver for stability - add full scale current configuration - dt: Add property for full scale current. - avoid potentially unpaired regulator calls - move static keyword to the front of declarations - fix optional led-max-microamp prop error handling - leds-max77650: - add of_node_put() before return - add MODULE_ALIAS() - Switch to fwnode property API - leds-as3645a: - fix misuse of strlcpy - leds-netxbig: - add of_node_put() in netxbig_leds_get_of_pdata() - remove legacy board-file support - leds-is31fl319x: - simplify getting the adapter of a client - leds-ti-lmu-common: - fix coccinelle issue - move static keyword to the front of declaration - leds-syscon: - use resource managed variant of device register - leds-ktd2692: - fix a typo in the name of a constant - leds-lp5562: - allow firmware files up to the maximum length - leds-an30259a: - fix typo - leds-pca953x: - include the right header" * tag 'leds-for-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds: (72 commits) leds: lm3532: Fix optional led-max-microamp prop error handling led: triggers: Fix dereferencing of null pointer leds: ti-lmu-common: Move static keyword to the front of declaration leds: lm3532: Move static keyword to the front of declarations leds: trigger: gpio: GPIO 0 is valid leds: pwm: Use struct_size() helper leds: is31fl32xx: Use struct_size() helper leds: ti-lmu-common: Fix coccinelle issue in TI LMU leds: lm3532: Avoid potentially unpaired regulator calls leds: syscon: Use resource managed variant of device register leds: Replace {devm_}led_classdev_register() macros with inlines leds: Allow to call led_classdev_unregister() unconditionally leds: lm3532: Add full scale current configuration dt: lm3532: Add property for full scale current. leds: lm3532: Fixes for the driver for stability leds: lm3532: Change the define for the fs current register leds: lm3532: Fix brightness control for i2c mode leds: Switch to use fwnode instead of be stuck with OF one leds: max77650: Switch to fwnode property API led: triggers: Fix a memory leak bug ...
2019-09-02Merge 5.3-rc7 into char-misc-nextGreg Kroah-Hartman1-0/+10
We need the fixes in here as well for testing and merges Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-28intel_th: pci: Add Tiger Lake supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Tiger Lake PCH. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: stable@vger.kernel.org # v4.14+ Link: https://lore.kernel.org/r/20190821074955.3925-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-28intel_th: pci: Add support for another Lewisburg PCHAlexander Shishkin1-0/+5
Add support for the Trace Hub in another Lewisburg PCH. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: stable@vger.kernel.org # v4.14+ Link: https://lore.kernel.org/r/20190821074955.3925-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-19Merge 5.3-rc5 into char-misc-nextGreg Kroah-Hartman2-2/+2
We need the char/misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-30intel_th: Use the correct style for SPDX License IdentifierNishad Kamdar2-2/+2
This patch corrects the SPDX License Identifier style in header files related to Drivers for Intel(R) Trace Hub controller. For C header files Documentation/process/license-rules.rst mandates C-like comments (opposed to C source files where C++ style should be used) Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46 Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-30drivers: Introduce device lookup variants by device typeSuzuki K Poulose1-9/+1
Add a helper to match a device by its type and provide wrappers for {bus/class/driver}_find_device() APIs. Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Harald Freudenberger <freude@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux-usb@vger.kernel.org Cc: Oliver Neukum <oneukum@suse.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Joe Perches <joe@perches.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20190723221838.12024-5-suzuki.poulose@arm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-25intel_th: msu: Preserve pre-existing buffer configurationAlexander Shishkin1-2/+7
The MSU configuration registers may contain buffer address/size set by the BIOS or an external hardware debugger, which may want to take over tracing from the driver when the driver is not actively tracing. Preserve these settings when not actively tracing. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190705141425.19894-6-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-25intel_th: msu: Prevent freeing buffers while locked windows existAlexander Shishkin1-0/+5
We already prevent freeing buffers via sysfs interface in case there are existing users or if trace is active. Treat the existence of locked windows similarly and return -EBUSY on attempts to free the buffer. When the last window is unlocked, the freeing will succeed. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190705141425.19894-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-25intel_th: msu: Get rid of the window size limitAlexander Shishkin1-71/+68
Currently, the window size is limited to the maximum number of sg entries in one table. This is because the code addresses individual blocks within the window by their numeric index. In reality, though, the blocks most often are iterated through sequentially. By rewriting the logic to use sg pointers instead of block indices we loose the necessity to dereference them directly and gain the ability to use multiple chained tables if necessary. Get rid of the limitation by replacing index-based block accesses with sequential block accesses. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190705141425.19894-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-25intel_th: msu-sink: An example msu buffer "sink"Alexander Shishkin2-0/+119
This patch adds an example MSU buffer "sink", which consumes trace data from MSC buffers. Functionally, it acts similarly to "multi" mode with automatic window switching. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190705141425.19894-3-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-07 22:53:51 +0300