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path: root/drivers/scsi/esas2r/esas2r_init.c
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2020-11-25scsi: esas2r: Use generic power managementVaibhav Gupta1-32/+12
Drivers should do only device-specific jobs. But in general, drivers using legacy PCI PM framework for .suspend()/.resume() have to manage many PCI PM-related tasks themselves which can be done by PCI Core itself. This brings extra load on the driver and it directly calls PCI helper functions to handle them. Switch to the new generic framework by updating function signatures and define a "struct dev_pm_ops" variable to bind PM callbacks. Also, remove unnecessary calls to the PCI Helper functions along with the legacy .suspend & .resume bindings. Link: https://lore.kernel.org/r/20201102164730.324035-12-vaibhavgupta40@gmail.com Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-25scsi: esas2r: Drop PCI Wakeup calls from .resumeVaibhav Gupta1-4/+0
The driver calls pci_enable_wake(...., false) in esas2r_resume(), and there is no corresponding pci_enable_wake(...., true) in esas2r_suspend(). Either it should do enable-wake the device in .suspend() or should not invoke pci_enable_wake() at all. Concluding that this driver doesn't support enable-wake and PCI core calls pci_enable_wake(pci_dev, PCI_D0, false) during resume, drop it from esas2r_resume(). Link: https://lore.kernel.org/r/20201102164730.324035-11-vaibhavgupta40@gmail.com Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10scsi: esas2r: esas2r_init: Place brackets around a potentially empty if()Lee Jones1-2/+3
Fixes the following W=1 kernel build warning(s): drivers/scsi/esas2r/esas2r_init.c: In function ‘esas2r_init_adapter’: drivers/scsi/esas2r/esas2r_init.c:418:41: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] Link: https://lore.kernel.org/r/20201102142359.561122-10-lee.jones@linaro.org Cc: Bradley Grove <linuxdrivers@attotech.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-23treewide: 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>
2019-08-12scsi: esas2r: Prefer pcie_capability_read_word()Frederick Lawler1-9/+4
Commit 8c0d3a02c130 ("PCI: Add accessors for PCI Express Capability") added accessors for the PCI Express Capability so that drivers didn't need to be aware of differences between v1 and v2 of the PCI Express Capability. Replace pci_read_config_word() and pci_write_config_word() calls with pcie_capability_read_word() and pcie_capability_write_word(). Signed-off-by: Frederick Lawler <fred@fredlawl.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-11scsi: esas2r: esas2r_init: mark expected switch fall-throughsGustavo A. R. Silva1-1/+2
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Bradley Grove <bgrove@atto.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-15scsi: esas2r: use dma_set_mask_and_coherentChristoph Hellwig1-35/+14
The driver currently uses pci_set_dma_mask despite otherwise using the generic DMA API. Also move the dma_get_required_mask check before actually setting the dma mask so that we don't end up with inconsistent settings in corner cases. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-12treewide: kzalloc() -> kcalloc()Kees Cook1-5/+6
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-04-20scsi: esas2r: use ktime_get_real_seconds()Arnd Bergmann1-3/+2
do_gettimeofday() is deprecated because of the y2038 overflow. Here, we use the result to pass into a 32-bit field in the firmware, which still risks an overflow, but if the firmware is written to expect unsigned values, it can at least last until y2106, and there is not much we can do about it. This changes do_gettimeofday() to ktime_get_real_seconds(), which at least simplifies the code a bit, and avoids the deprecated interface. I'm adding a comment about the overflow to document what happens. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-19scsi: esas2r: remove initialization / cleanup dead woodChristoph Hellwig1-21/+0
esas2r has been converted to hotplug style initialization long ago, but kept various remant of the old-style scsi_module.c initialization around. Remove those. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-12scsi: esas2r: Replace semaphore fs_api_semaphore with mutexBinoy Jayan1-1/+1
The semaphore 'fs_api_semaphore' is used as a simple mutex, so it should be written as one. Semaphores are going away in the future. Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-12scsi: esas2r: Replace semaphore fm_api_semaphore with mutexBinoy Jayan1-1/+1
The semaphore 'fm_api_semaphore' is used as a simple mutex, so it should be written as one. Semaphores are going away in the future. Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-09scsi: esas2r: Fix format string type mistakesEmese Revfy1-1/+1
This adds the missing __printf attribute which allows compile time format string checking (and will be used by the coming initify gcc plugin). Additionally, this fixes the warnings exposed by the attribute. Signed-off-by: Emese Revfy <re.emese@gmail.com> [kees: split scsi/acpi, merged attr and fix, new commit messages] Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-08-25scsi: esas2r: don't reinitialize adapter's req_tableShawn Lin1-4/+0
req_table is allocate by kzalloc, so we don't need to zero it again. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Acked-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-01-27[SCSI] esas2r: use PCI define for Max_Read_Request_SizeRafał Miłecki1-2/+3
Replace a magic number with a PCI #define symbol. [bhelgaas: add parenthesis] Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-03-19[SCSI] remove deprecated IRQF_DISABLED from SCSIMichael Opdenacker1-1/+1
It's a NOOP since 2.6.35 and it will be removed one day. [jejb: remove from missed arm scsi drivers] Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-10-25[SCSI] esas2r: Remove superfluous mask of pcie_cap_regBradley Grove1-1/+1
Signed-off-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-10-25[SCSI] esas2r: Fixes for big-endian platformsBradley Grove1-4/+7
In esas2r_format_init_msg(), sgl_page_size and epoch_time params are converted to little endian and the firmware version read from the hba is converted to cpu endianess. In esas2r_rq_init_request, correct and simplify the construction of the SCSI handle. These fixes are the result of testing on a PPC64 machine. Signed-off-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-10-25[SCSI] esas2r: Directly call kernel functions for atomic bit operationsBradley Grove1-74/+69
Previously the code embedded the kernel's test_bit/clear_bit functions in wrappers that accepted u32 parameters. The wrapper cast these parameters to longs before passing them to the kernel's bit functions. This did not work properly on platforms with 64-bit longs. Signed-off-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-06[SCSI] esas2r: Remove null test for stack allocated fw_coredump_bufferBradley Grove1-2/+1
Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-06[SCSI] esas2r: smatch - Fix dereference that occurs prior to checkBradley Grove1-1/+2
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-06[SCSI] esas2r: smatch - Use biwise rather than logical AND for checking if ↵Bradley Grove1-1/+1
any bit set Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03[SCSI] esas2r: ATTO Technology ExpressSAS 6G SAS/SATA RAID Adapter DriverBradley Grove1-0/+1773
This is a new driver for ATTO Technology's ExpressSAS series of hardware RAID adapters. It supports the following adapters: - ExpressSAS R60F - ExpressSAS R680 - ExpressSAS R608 - ExpressSAS R644 Signed-off-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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