- 16 Oct, 2018 10 commits
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Christoph Hellwig authored
The dma_addr_t member is unused ever since we switched the SCSI layer to send down single-segement command using a scatterlist as well many years ago. Signed-off-by:
Christoph Hellwig <hch@lst.de> Tested-by:
Finn Thain <fthain@telegraphics.com.au> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Christoph Hellwig authored
Except for the mac_esp driver, which uses PIO or pseudo DMA, all drivers share the same dma mapping calls. Move the dma mapping into the core code using the scsi_dma_map / scsi_dma_unmap helpers, with a special identify mapping variant triggered off a new ESP_FLAG_NO_DMA_MAP flag for mac_esp. Signed-off-by:
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Christoph Hellwig authored
We can simplify use esp->dev now. Signed-off-by:
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Christoph Hellwig authored
esp->dev is a void pointer that points either to a struct device, or a struct platform_device. As we can easily get from the device to the platform_device if needed change it to always point to a struct device and properly type the pointer to avoid errors. Signed-off-by:
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Christoph Hellwig authored
esp_sbus_map_command_block is called straight from the probe routine without any locks held, so we can safely use GFP_KERNEL here. Signed-off-by:
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Christoph Hellwig authored
Remove usage of the legacy PCI DMA API. To make this easier we also store a struct device instead of pci_dev in the dev field of struct esp. Signed-off-by:
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Venkat Gopalakrishnan authored
Per Qcom's UFS host controller HW design, the UFS Tx lane1 clock could be muxed with Tx lane0 clock, hence keep Tx lane1 clock optional by ignoring it if it is not provided in device tree. This change also performs some cleanup to lanes per direction checks when enable/disable lane clocks just for symmetry. Signed-off-by:
Venkat Gopalakrishnan <venkatg@codeaurora.org> Signed-off-by:
Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by:
Can Guo <cang@codeaurora.org> Reviewed-by:
Vivek Gautam <vivek.gautam@codeaurora.org> Reviewed-by:
Douglas Anderson <dianders@chromium.org> Tested-by:
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Arnd Bergmann authored
We get a warning from 'make headers_check' about a newly introduced usage of integer types in the scsi/scsi_bsg_ufs.h uapi header: usr/include/scsi/scsi_bsg_ufs.h:18: found __[us]{8,16,32,64} type without #include <linux/types.h> Aside from the missing linux/types.h inclusion, I also noticed that it uses the wrong types: 'u32' is not available at all in user space, and 'uint32_t' depends on the inclusion of a standard header that we should not include from kernel headers. Change the all to __u32 and similar types here. I also note the usage of '__be32' and '__be16' that seems unfortunate for a user space API. I wonder if it would be better to define the interface in terms of a CPU-endian structure and convert it in kernel space. Fixes: e77044c5 ("scsi: ufs-bsg: Add support for uic commands in ufs_bsg_request()") Fixes: df032bf2 ("scsi: ufs: Add a bsg endpoint that supports UPIUs") Signed-off-by:Arnd Bergmann <arnd@arndb.de> Reviewed-by:
Avri Altman <avri.altman@wdc.com> Signed-off-by:
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Christoph Hellwig authored
dma_alloc_coherent allocates memory that can be used by the cpu and the device at the same time, calls to pci_dma_sync_* are not required, and in fact actively harmful on some architectures like arm. Signed-off-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
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Christoph Hellwig authored
The dma_map_sg / dma_unmap_sg APIs called from scsi_dma_map / scsi_dma_unmap already transfer memory ownership to the device or cpu respectively. Adding additional calls to pci_dma_sync_sg_* will in fact lead to data corruption if we end up using swiotlb for some reason. Also remove the now pointless megaraid_mbox_sync_scb function. Signed-off-by:
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- 11 Oct, 2018 20 commits
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Colin Ian King authored
There are extraneous parantheses that are causing clang to produce a warning so remove these. Clean up 3 clang warnings: equality comparison with extraneous parentheses [-Wparentheses-equality] Signed-off-by:
Colin Ian King <colin.king@canonical.com> Acked-by:
Ching Huang <ching2048@areca.com.tw> Signed-off-by:
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Avri Altman authored
Make ufshcd_send_uic_cmd() public for that. Signed-off-by:
Bart Van Assche <Bart.VanAssche@wdc.com> Signed-off-by:
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Avri Altman authored
Do that for the currently supported UPIUs: query, nop out, and task management. We do not support UPIU of type scsi command yet, while we are using the job's request and reply pointers to hold the payload. We will look into it in later patches. We might need to elaborate the raw upiu api for that. We also still not supporting uic commands: For first phase, we plan to use the existing api, and send only uic commands that are already supported. Anyway, all that will come in the next patch. Signed-off-by:
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Avri Altman authored
The UFS host software uses a combination of a host register set and Transfer Request Descriptors in system memory to communicate with host controller hardware. In its mmio space, a separate places are assigned to UTP Transfer Request Descriptor ("utrd") list, and to UTP Task Management Request Descriptor ("utmrd") list. The provided API supports utrd-typed requests: nop out and device management commands. It also supports utmrd-type requests: task management requests. Other UPIU types are not supported for now. We utilize the already existing code for tag and task work queues. That is, all utrd-typed UPIUs are "disguised" as device management commands. Similarly, the utmrd-typed UPUIs uses the task management infrastructure. It is up to the caller to fill the upiu request properly, as it will be copied without any further input validations. Signed-off-by: -
Avri Altman authored
Use the structure size in pointer arithmetic instead of an opaque 32 bytes for the over-allocation of descriptors. Signed-off-by:
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Avri Altman authored
For now, just provide an API to allocate and remove ufs-bsg node. We will use this framework to manage ufs devices by sending UPIU transactions. For the time being, implements an empty bsg_request() - will add some more functionality in coming patches. Nonetheless, we reveal here the protocol we are planning to use: UFS Transport Protocol Transactions. UFS transactions consist of packets called UFS Protocol Information Units (UPIU). There are UPIU’s defined for UFS SCSI commands, responses, data in and data out, task management, utility functions, vendor functions, transaction synchronization and control, and more. By using UPIUs, we get access to the most fine-grained internals of this protocol, and able to communicate with the device in ways, that are sometimes beyond the capacity of the ufs driver. Moreover and as a result, our core structure - ufs_bsg_node has a pretty lean structure: using upiu transactions that contains the outmost detailed info, so we don't really need complex constructs to support it. Signed-off-by:
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Avri Altman authored
in preparation to send UPIU requests via bsg. Signed-off-by:
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Christoph Hellwig authored
Add a helper that takes a utp_task_req_desc and issues it, which will be useful for UFS bsg support. Rewrite ufshcd_issue_tm_cmd0x to use this new helper. Signed-off-by:
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Christoph Hellwig authored
Remove the pointless task_req_upiu and task_rsp_upiu indirections, which are __le32 arrays always cast to given structures and just add the members directly. Also clean up variables names in use in the callers a bit to make the code more readable. Signed-off-by:
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Lance Roy authored
lockdep_assert_held() is better suited to checking locking requirements, since it won't get confused when someone else holds the lock. This is also a step towards possibly removing spin_is_locked(). Signed-off-by:
Lance Roy <ldr709@gmail.com> Cc: Karan Tilak Kumar <kartilak@cisco.com> Cc: Sesidhar Baddela <sebaddel@cisco.com> Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: <linux-scsi@vger.kernel.org> Reviewed-by:
Bart Van Assche <bvanassche@acm.org> Signed-off-by:
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Nathan Chancellor authored
Clang warns when multiple pairs of parentheses are used for a single conditional statement. drivers/scsi/mpt3sas/mpt3sas_base.c:535:11: warning: equality comparison with extraneous parentheses [-Wparentheses-equality] if ((ioc == NULL)) ~~~~^~~~~~~ drivers/scsi/mpt3sas/mpt3sas_base.c:535:11: note: remove extraneous parentheses around the comparison to silence this warning if ((ioc == NULL)) ~ ^ ~ drivers/scsi/mpt3sas/mpt3sas_base.c:535:11: note: use '=' to turn this equality comparison into an assignment if ((ioc == NULL)) ^~ = drivers/scsi/mpt3sas/mpt3sas_base.c:539:12: warning: equality comparison with extraneous parentheses [-Wparentheses-equality] if ((pdev == NULL)) ~~~~~^~~~~~~ drivers/scsi/mpt3sas/mpt3sas_base.c:539:12: note: remove extraneous parentheses around the comparison to silence this warning if ((pdev == NULL)) ~ ^ ~ drivers/scsi/mpt3sas/mpt3sas_base.c:539:12: note: use '=' to turn this equality comparison into an assignment if ((pdev == NULL)) ^~ = 2 warnings generated. Remove them and while we're at it, simplify the NULL checks as '!var' is used more than 'var == NULL'. Signed-off-by:Nathan Chancellor <natechancellor@gmail.com> Signed-off-by:
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Souptick Joarder authored
Replaced dma_pool_alloc + memset with dma_pool_zalloc. Signed-off-by:
Brajeswar Ghosh <brajeswar.linux@gmail.com> Signed-off-by:
Souptick Joarder <jrdr.linux@gmail.com> Acked-by:
Suganath Prabu <suganath-prabu.subramani@broadcom.com> Signed-off-by:
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Joe Perches authored
All the uses have been removed, delete the macro. Signed-off-by:
Joe Perches <joe@perches.com> Acked-by:
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Joe Perches authored
Convert these uses to ioc_<level> where appropriate. Signed-off-by:
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Joe Perches authored
Remove the logging level as panic calls stop the machine and should always be emitted regardless of requested logging level. These existing panic uses are perhaps inappropriate. Miscellanea: o Coalesce formats and convert MPT3SAS_FMT to "%s: " to improve clarity Signed-off-by:
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Joe Perches authored
Convert the existing 2 uses to make the format and arguments matching more obvious. Miscellanea: o Move the word "enabled" into the format to trivially reduce object size o Remove unnecessary parentheses Signed-off-by:
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Joe Perches authored
These have misordered uses of __func__ and ioc->name that could mismatch MPT3SAS_FMT and "%s: ". Convert them to ioc_<level>. Signed-off-by:
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Joe Perches authored
Use a more common logging style. Done using the perl script below and some typing $ git grep --name-only -w MPT3SAS_FMT -- "*.c" | \ xargs perl -i -e 'local $/; while (<>) { s/\bpr_(info|err|notice|warn)\s*\(\s*MPT3SAS_FMT\s*("[^"]+"(?:\s*\\?\s*"[^"]+"\s*){0,5}\s*),\s*ioc->name\s*/ioc_\1(ioc, \2/g; print;}' Miscellanea for these conversions: o Coalesce formats o Realign arguments o Remove unnecessary parentheses o Use casts to u64 instead of unsigned long long where appropriate o Convert broken pr_info uses to pr_cont o Fix broken format string concatenation with line continuations and excess whitespace Signed-off-by: -
Joe Perches authored
These macros can help identify specific logging uses and eventually perhaps reduce object sizes. Signed-off-by:
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Matthew R. Ochs authored
The uapi header file listed in the cxlflash stanza has a typo. Removed the trailing 's' from the filename. Reported-by:
Matthew R. Ochs <mrochs@linux.ibm.com> Acked-by:
Uma Krishnan <ukrishn@linux.ibm.com> Signed-off-by:
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- 28 Sep, 2018 10 commits
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Himanshu Madhani authored
This patch fixes commit bcc71cc3 ("scsi: qla2xxx: Fix for double free of SRB structure") which placed code in wrong routines. Also updated the use of WARN_ON() to WARN_ON_ONCE() to prevent flooding log messages. Fixes: bcc71cc3 ("scsi: qla2xxx: Fix for double free of SRB structure") Signed-off-by:
Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by:
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Finn Thain authored
The SR_RST bit isn't latched. Hence, detecting a bus reset isn't reliable. When it is detected, the right thing to do is to drop all connected and disconnected commands. The code for that is already present so refactor it and call it when SR_RST is set. Tested-by:
Michael Schmitz <schmitzmic@gmail.com> Signed-off-by:
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Finn Thain authored
The X3T9.2 specification (draft) says, under "6.1.4.2 RESELECTION time-out procedure", that a target may assert RST or go to BUS FREE phase if the initiator does not respond within 200 us. Something like this has been observed with AztecMonster II target. When it happens, all we can do is wait for the target to try again. Tested-by:
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Finn Thain authored
The X3T9.2 specification (draft) says, under "6.1.4.1 RESELECTION", ... The reselected initiator shall then assert the BSY signal within a selection abort time of its most recent detection of being reselected; this is required for correct operation of the time-out procedure. The selection abort time is only 200 us which may be insufficient time for a printk() call. Move the diagnostics to the error paths. Tested-by: -
Finn Thain authored
When NCR5380_abort() returns FAILED, the driver forgets that the target is still busy. Hence, further commands may be sent to the target, which may fail during selection and produce the error message, "reselection after won arbitration?". Prevent this by leaving the busy flag set when NCR5380_abort() fails. Tested-by:
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Finn Thain authored
The X3T9.2 specification (draft) says, under "6.1.4.1 RESELECTION", that "the initiator shall not respond to a RESELECTION phase if other than two SCSI ID bits are on the DATA BUS." This issue (too many bits set) has been observed in the wild, so add a check. Tested-by:
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Finn Thain authored
When sense data is valid, call set_driver_byte(cmd, DRIVER_SENSE). Otherwise some callers of scsi_execute() will ignore sense data. Don't set DID_ERROR or DID_RESET just because sense data is missing. Tested-by:
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Finn Thain authored
This is mostly needed because an AztecMonster II target has been observed disconnecting REQUEST SENSE commands and then failing to reselect properly. Suggested-by:
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Finn Thain authored
The return value is taken to mean "retry" or "don't retry". Change it to bool to improve readability. Fix related comments. No functional change. Tested-by:
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Finn Thain authored
Replace a 'goto' statement with a simple 'return' where possible. This improves readability. No functional change. Tested-by:
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