- 24 9月, 2017 1 次提交
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由 Hamza Attak 提交于
The patch simply replaces all msleep function calls with usleep_range calls in the generic drivers. Tested with an Infineon TPM 1.2, using the generic tpm-tis module, for a thousand PCR extends, we see results going from 1m57s unpatched to 40s with the new patch. We obtain similar results when using the original and patched tpm_infineon driver, which is also part of the patch. Similarly with a STM TPM 2.0, using the CRB driver, it takes about 20ms per extend unpatched and around 7ms with the new patch. Note that the PCR consistency is untouched with this patch, each TPM has been tested with 10 million extends and the aggregated PCR value is continuously verified to be correct. As an extension of this work, this could potentially and easily be applied to other vendor's drivers. Still, these changes are not included in the proposed patch as they are untested. Signed-off-by: NHamza Attak <hamza@hpe.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJames Morris <james.l.morris@oracle.com>
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- 07 7月, 2017 3 次提交
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由 Enric Balletbo i Serra 提交于
The suspend/resume behavior of the TPM can be controlled by setting "powered-while-suspended" in the DTS. This is useful for the cases when hardware does not power-off the TPM. Signed-off-by: NSonny Rao <sonnyrao@chromium.org> Signed-off-by: NEnric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJames Morris <james.l.morris@oracle.com>
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由 Jarkko Sakkinen 提交于
Consolidated all the "manual" TPM startup code to a single function in order to make code flows a bit cleaner and migrate to tpm_buf. Tested-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJames Morris <james.l.morris@oracle.com>
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由 Azhar Shaikh 提交于
To overcome a hardware limitation on Intel Braswell systems, disable CLKRUN protocol during TPM transactions and re-enable once the transaction is completed. Signed-off-by: NAzhar Shaikh <azhar.shaikh@intel.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJames Morris <james.l.morris@oracle.com>
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- 14 6月, 2017 4 次提交
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由 Stefan Berger 提交于
Introduce the flag TPM_TRANSMIT_RAW that allows us to transmit a command without recursing into the requesting of locality. Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Jarkko Sakkinen 提交于
Removed struct tpm_pcrextend_in as it is not used for anything anymore. Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: NPeter Huewe <peterhuewe@gmx.de>
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由 Jarkko Sakkinen 提交于
You should not do arithmetic with __be32 or __le32 types because sometimes it results incorrect results. Calculations must be done only with integers that are in in the CPU byte order. This commit migrates tpm_getcap() to struct tpm_buf in order to sort out these issues. Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
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由 Roberto Sassu 提交于
In the long term, TPM 1.2 functions in the driver interface will be modified to use tpm_buf_init(). However, tag and ordinals cannot be passed directly to tpm_buf_init(), because this function performs CPU native to big-endian conversion of these arguments. Since TPM_TAG_RQU_COMMAND and TPM_ORD_ are already converted, passing them to the function will undo the previous conversion. This patch moves the conversion of TPM_TAG_RQU_COMMAND from the tpm.h header file in the driver directory to the tpm_input_header declarations in the driver interface and tpm-sysfs.c. Signed-off-by: NRoberto Sassu <roberto.sassu@huawei.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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- 04 4月, 2017 6 次提交
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由 Jarkko Sakkinen 提交于
This commit adds support for requesting and relinquishing locality 0 in tpm_crb for the course of command transmission. In order to achieve this, two new callbacks are added to struct tpm_class_ops: - request_locality - relinquish_locality With CRB interface you first set either requestAccess or relinquish bit from TPM_LOC_CTRL_x register and then wait for locAssigned and tpmRegValidSts bits to be set in the TPM_LOC_STATE_x register. The reason why were are doing this is to make sure that the driver will work properly with Intel TXT that uses locality 2. There's no explicit guarantee that it would relinquish this locality. In more general sense this commit enables tpm_crb to be a well behaving citizen in a multi locality environment. Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: NJerry Snitselaar <jsnitsel@redhat.com> Tested-by: NJerry Snitselaar <jsnitsel@redhat.com>
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由 James Bottomley 提交于
Sessions are different from transient objects in that their handles may not be virtualized (because they're used for some hmac calculations). Additionally when a session is context saved, a vestigial memory remains in the TPM and if it is also flushed, that will be lost and the session context will refuse to load next time, so the code is updated to flush only transient objects after a context save. Add a separate array (chip->session_tbl) to save and restore sessions by handle. Use the failure of a context save or load to signal that the session has been flushed from the TPM and we can remove its memory from chip->session_tbl. Sessions are also isolated during each instance of a tpm space. This means that spaces shouldn't be able to see each other's sessions and is enforced by ensuring that a space user may only refer to sessions handles that are present in their own chip->session_tbl. Finally when a space is closed, all the sessions belonging to it should be flushed so the handles may be re-used by other spaces. Note that if we get a session save or load error, all sessions are effectively flushed. Even though we restore the session buffer, all the old sessions will refuse to load after the flush and they'll be purged from our session memory. This means that while transient context handling is still soft in the face of errors, session handling is hard (any failure of the model means all sessions are lost). Fixes-from: Colin Ian King <colin.king@canonical.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 James Bottomley 提交于
Currently the tpm spaces are not exposed to userspace. Make this exposure via a separate device, which can now be opened multiple times because each read/write transaction goes separately via the space. Concurrency is protected by the chip->tpm_mutex for each read/write transaction separately. The TPM is cleared of all transient objects by the time the mutex is dropped, so there should be no interference between the kernel and userspace. Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Jarkko Sakkinen 提交于
Added an ability to virtualize TPM commands into an isolated context that we call a TPM space because the word context is already heavily used in the TPM specification. Both the handle areas and bodies (where necessary) are virtualized. The mechanism works by adding a new parameter struct tpm_space to the tpm_transmit() function. This new structure contains the list of virtual handles and a buffer of page size (currently) for backing storage. When tpm_transmit() is called with a struct tpm_space instance it will execute the following sequence: 1. Take locks. 2. Load transient objects from the backing storage by using ContextLoad and map virtual handles to physical handles. 3. Perform the transaction. 4. Save transient objects to backing storage by using ContextSave and map resulting physical handle to virtual handle if there is such. This commit does not implement virtualization support for hmac and policy sessions. Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJames Bottomley <James.Bottomley@HansenPartnership.com> Reviewed-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Jarkko Sakkinen 提交于
Check for every TPM 2.0 command that the command code is supported and the command buffer has at least the length that can contain the header and the handle area. For ContextSave and FlushContext we mark the body to be part of the handle area. This gives validation for these commands at zero cost, including the body of the command. The more important reason for this is that we can virtualize these commands in the same way as you would virtualize the handle area of a command. Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJames Bottomley <James.Bottomley@HansenPartnership.com> Reviewed-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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由 Jarkko Sakkinen 提交于
Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJames Bottomley <James.Bottomley@HansenPartnership.com> Reviewed-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
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- 20 2月, 2017 1 次提交
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由 Jarkko Sakkinen 提交于
There's no need to export tpm2_get_pcr_alloation() because it is only a helper function for tpm2_auto_startup(). For the same reason it does not make much sense to maintain documentation for it. Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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- 04 2月, 2017 6 次提交
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由 Stefan Berger 提交于
In cap_t the size of the type bool is assumed to be one byte. This commit sorts out the issue by changing the type to u8. Fixes: c659af78 ("tpm: Check size of response before accessing data") Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Nayna Jain 提交于
Unlike the device driver support for TPM 1.2, the TPM 2.0 does not support the securityfs pseudo files for displaying the firmware event log. This patch enables support for providing the TPM 2.0 event log in binary form. TPM 2.0 event log supports a crypto agile format that records multiple digests, which is different from TPM 1.2. This patch enables the tpm_bios_log_setup for TPM 2.0 and adds the event log parser which understand the TPM 2.0 crypto agile format. Signed-off-by: NNayna Jain <nayna@linux.vnet.ibm.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NKenneth Goldman <kgold@linux.vnet.ibm.com> Tested-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Nayna Jain 提交于
The current TPM 2.0 device driver extends only the SHA1 PCR bank but the TCG Specification[1] recommends extending all active PCR banks, to prevent malicious users from setting unused PCR banks with fake measurements and quoting them. The existing in-kernel interface(tpm_pcr_extend()) expects only a SHA1 digest. To extend all active PCR banks with differing digest sizes, the SHA1 digest is padded with trailing 0's as needed. This patch reuses the defined digest sizes from the crypto subsystem, adding a dependency on CRYPTO_HASH_INFO module. [1] TPM 2.0 Specification referred here is "TCG PC Client Specific Platform Firmware Profile for TPM 2.0" Signed-off-by: NNayna Jain <nayna@linux.vnet.ibm.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NKenneth Goldman <kgold@linux.vnet.ibm.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Nayna Jain 提交于
This patch implements the TPM 2.0 capability TPM_CAP_PCRS to retrieve the active PCR banks from the TPM. This is needed to enable extending all active banks as recommended by TPM 2.0 TCG Specification. Signed-off-by: NNayna Jain <nayna@linux.vnet.ibm.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NKenneth Goldman <kgold@linux.vnet.ibm.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Jarkko Sakkinen 提交于
The error code handling is broken as any error code that has the same bits set as TPM_RC_HASH passes. Implemented tpm2_rc_value() helper to parse the error value from FMT0 and FMT1 error codes so that these types of mistakes are prevented in the future. Fixes: 5ca4c20c ("keys, trusted: select hash algorithm for TPM2 chips") Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
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由 Jarkko Sakkinen 提交于
These are non-generic functions and do not belong to tpm.h. Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
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- 24 1月, 2017 1 次提交
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由 Stefan Berger 提交于
Make sure that we have not received less bytes than what is indicated in the header of the TPM response. Also, check the number of bytes in the response before accessing its data. Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkine@linux.intel.com> Tested-by: NJarkko Sakkinen <jarkko.sakkine@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkine@linux.intel.com>
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- 28 11月, 2016 5 次提交
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由 Nayna Jain 提交于
Move the backing memory for the event log into tpm_chip and push the tpm_chip into read_log. This optimizes read_log processing by only doing it once and prepares things for the next patches in the series which require the tpm_chip to locate the event log via ACPI and OF handles instead of searching. This is straightfoward except for the issue of passing a kref through i_private with securityfs. Since securityfs_remove does not have any removal fencing like sysfs we use the inode lock to safely get a kref on the tpm_chip. Suggested-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: NNayna Jain <nayna@linux.vnet.ibm.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Jarkko Sakkinen 提交于
This commit is based on a commit by Nayna Jain. Replaced dynamically allocated bios_dir with a static array as the size is always constant. Suggested-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Jason Gunthorpe 提交于
This is no longer necessary, all calls to tpm_chip_unregister happen in remove() callbacks. Signed-off-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: NTomas Winkler <tomas.winkler@intel.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Jason Gunthorpe 提交于
The tis driver does a tpm_get_timeouts out side of tpm_chip_register, and tpm_get_timeouts can print a message, resulting in two prints, eg: tpm tpm0: [Hardware Error]: Adjusting reported timeouts: A 10000->750000us B 10000->2000000us C 10000->750000us D 10000->750000us Keep track and prevent tpm_get_timeouts from running a second time, and clarify the purpose of the call in tpm_tis_core to only be connected to irq testing. Signed-off-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Jarkko Sakkinen 提交于
Use cpu_to_b32 at the time it is needed in enum tpm_capabilities and enum tpm_sub_capabilities in order to be consistent with the other enums in drivats/char/tpm/tpm.h. Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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- 15 9月, 2016 3 次提交
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由 Jarkko Sakkinen 提交于
Since tpm_gen_interrupt() is only used in tpm_tis_core.c this commit replaces it with an internal tpm_tis_gen_interrupt(). The semantics also changed in a way that on a system error the driver initialization is failed. Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
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由 Jarkko Sakkinen 提交于
Removed unnecessary externs from tpm.h. Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
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由 Jarkko Sakkinen 提交于
Unseal and load operations should be done as an atomic operation. This commit introduces unlocked tpm_transmit() so that tpm2_unseal_trusted() can do the locking by itself. Fixes: 0fe54803 ("keys, trusted: seal/unseal with TPM 2.0 chips") Cc: stable@vger.kernel.org Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
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- 19 7月, 2016 1 次提交
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由 Jason Gunthorpe 提交于
The TCG standard startup sequence (get timeouts, tpm startup, etc) for TPM and TPM2 chips is being open coded in many drivers, move it into the core code. tpm_tis and tpm_crb are used as the basis for the core code implementation and the easy drivers are converted. In the process several small drivers bugs relating to error handling this flow are fixed. For now the flag TPM_OPS_AUTO_STARTUP is optional to allow a staged driver roll out, but ultimately all drivers should use this flow and the flag removed. Some drivers still do not implement the startup sequence at all and will need to be tested with it enabled. Signed-off-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Tested-by: NAndrew Zamansky <andrew.zamansky@nuvoton.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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- 25 6月, 2016 9 次提交
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由 Christophe Ricard 提交于
Add missing include guards in tpm.h Signed-off-by: NPeter Huewe <peter.huewe@infineon.com> Signed-off-by: NChristophe Ricard <christophe-h.ricard@st.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Stefan Berger 提交于
Introduce TPM_CHIP_FLAG_VIRTUAL to be used when the chip device has no parent device. Prevent sysfs entries requiring a parent device from being created. Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Jason Gunthorpe 提交于
The final thing preventing this was the way the sysfs files were attached to the pdev. Follow the approach developed for ppi and move the sysfs files to the chip->dev with symlinks from the pdev for compatibility. Everything in the core now sanely uses container_of to get the chip. Signed-off-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Tested-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Christophe Ricard 提交于
Remove useless priv field in struct tpm_vendor_specific and take benefit of chip->dev.driver_data. As priv is the latest field available in struct tpm_vendor_specific, remove any reference to that structure. Signed-off-by: NChristophe Ricard <christophe-h.ricard@st.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Christophe Ricard 提交于
Move tpm_vendor_specific data related to TCG PTP specification to tpm_chip. Move all fields directly linked with well known TCG concepts and used in TPM drivers (tpm_i2c_atmel, tpm_i2c_infineon, tpm_i2c_nuvoton, tpm_tis and xen-tpmfront) as well as in TPM core files (tpm-sysfs, tpm-interface and tpm2-cmd) in tpm_chip. Signed-off-by: NChristophe Ricard <christophe-h.ricard@st.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Christophe Ricard 提交于
Dropped the field 'locality' from struct tpm_vendor_specific migrated it to the private structures of st33zp24, tpm_i2c_infineon and tpm_tis. Signed-off-by: NChristophe Ricard <christophe-h.ricard@st.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Christophe Ricard 提交于
Dropped the field 'read_queue' from struct tpm_vendor_specific and make it available to the various private structures in the drivers. Signed-off-by: NChristophe Ricard <christophe-h.ricard@st.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Christophe Ricard 提交于
Dropped the field 'irq' from struct tpm_vendor_specific and make it available to the various private structures in the drivers using irqs. A dedicated flag TPM_CHIP_FLAG_IRQ is added for the upper layers. In st33zp24, struct st33zp24_dev declaration is moved to st33zp24.h in order to make accessible irq from other phy's(i2c, spi). In tpm_i2c_nuvoton, chip->vendor.priv is not directly allocated. We can access irq field from priv_data in a cleaner way. Signed-off-by: NChristophe Ricard <christophe-h.ricard@st.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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由 Christophe Ricard 提交于
Dropped the field 'iobase' from struct tpm_vendor_specific and migrated it to the private structures of tpm_atmel and tpm_tis. Signed-off-by: NChristophe Ricard <christophe-h.ricard@st.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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