Convert the driver to modern style probing. Given that there only is a
single instance for a given board that can be done using a global struct
Scsi_Host instance easily.
Also fix the removal path by passing the correct cookie to free_irq, and
enable it unconditionally.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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>
This function is only used inside the SCSI midlayer, so remove the
export for it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
32 bit port capabilities are required to support new speeds which can
not be supported using 16 bit port capabilities.
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In preparation to enabling -Wvla, remove VLAs and replace them with
fixed-length arrays instead.
bfad_bsg.c uses a variable-length array declaration to measure the
size of a putative array; this can be replaced by the product of the
size of an element and the number of elements, avoiding the VLA
altogether.
This was prompted by https://lkml.org/lkml/2018/3/7/621
Signed-off-by: Stephen Kitt <steve@sk2.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In preparation to enabling -Wvla, remove VLAs and replace them with
fixed-length arrays instead.
The arrays fixed here, using the number of constant sections, aren't
really VLAs, but they appear so to the compiler. Replace the array sizes
with a pre-processor-level constant instead using ARRAY_SIZE.
This was prompted by https://lkml.org/lkml/2018/3/7/621
Signed-off-by: Stephen Kitt <steve@sk2.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In the comment for function alua_alloc_pg() the argument '@h' is
mistakenly referred to. Fix this by replacing it with the correct
argument reference, '@tpgs', and provide a short description.
Signed-off-by: John Pittman <jpittman@redhat.com>
Reviewed-by Laurence Oberman <loberman@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
aha1740 doesn't use scsi_register, so it should not use scsi_unregister
either.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Since moving away from using scsi_module.c these were never called. The
implementations are called directly, though so they remain.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
dpt_i2o doesn't use scsi_register, so it should not use scsi_unregister
either. Also refactor the module exit path to make a little more sense.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
These two drivers do not appear to be in active use. Deprecate them.
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There are several unions that are local to the source and do not need to
be in global scope, so make them static. Also add in a missing void
parameter to functions lpfc_nvme_cmd_template and
lpfc_nvmet_cmd_template to clean up non-ANSI warning.
Cleans up sparse warnings:
drivers/scsi/lpfc/lpfc_nvme.c:68:19: warning: symbol
'lpfc_iread_cmd_template' was not declared. Should it be static?
drivers/scsi/lpfc/lpfc_nvme.c:69:19: warning: symbol
'lpfc_iwrite_cmd_template' was not declared. Should it be static?
drivers/scsi/lpfc/lpfc_nvme.c:70:19: warning: symbol
'lpfc_icmnd_cmd_template' was not declared. Should it be static?
drivers/scsi/lpfc/lpfc_nvme.c:74:24: warning: non-ANSI function
'lpfc_tsend_cmd_template' was not declared. Should it be static?
drivers/scsi/lpfc/lpfc_nvmet.c:78:19: warning: symbol
'lpfc_treceive_cmd_template' was not declared. Should it be static?
drivers/scsi/lpfc/lpfc_nvmet.c:79:19: warning: symbol
'lpfc_trsp_cmd_template' was not declared. Should it be static?
drivers/scsi/lpfc/lpfc_nvmet.c:83:25: warning: non-ANSI function
declaration of function 'lpfc_nvmet_cmd_template'
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In preparation to enabling -Wvla, remove VLAs and replace them with
fixed-length arrays instead.
scsi_dh_{alua,emc,rdac} use variable-length array declarations to store
command blocks, with the appropriate size as determined by
COMMAND_SIZE. This patch replaces these with fixed-sized arrays using
MAX_COMMAND_SIZE, so that the array size can be determined at compile
time.
This was prompted by https://lkml.org/lkml/2018/3/7/621
Signed-off-by: Stephen Kitt <steve@sk2.org>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In jazz_esp and sun3x_esp, the esp_driver_ops methods pass esp->dev in
dma api calls as if it was a pointer to a struct device. But it actually
points to a struct platform_device. Fix this.
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Export device table of v3 hw to userspace, or auto probe will fail for v3
hw.
Also change the module alias to include "pci", instead of "platform".
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Do some modifications for register configuring for hip08.
In future, to reduce kernel churn with patches to modify registers, any
registers which may change between board models (mostly PHY/SERDES related)
should be set in ACPI reset handler.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The patch does some code cleanup and fixes some small bugs:
- Correct return status of phy_up_v3_hw() and phy_bcast_v3_hw()
- Add static for function phy_get_max_linkrate_v3_hw()
- Change exception return status when no reset method
- Change magic value to ts->stat in slot_complete_vx_hw()
- Remove unnecessary check for dev_is_sata()
- Fix some issues of alignment and indents (Authored by Xiaofei Tan in
another patch, but added here to be practical)
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
It is an implicit regulation that error code that function returned should
be negative. But hisi_sas_task_prep() doesn't follow this. This may cause
problems in the upper layer code.
For example, in sas_expander.c of libsas, smp_execute_task_sg() may return
the number of bytes of underrun. It will be conflicted with the scenaio
lldd_execute_task() return an positive error code.
This patch change the return value from SAS_PHY_DOWN to -ECOMM in
hisi_sas_task_prep().
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The structure element hisi_sas_devices.running_req to count how many
commands are active is in effect only ever written in the code, so remove
it.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The current 110ms expiry time is not long enough for the internal abort
task.
The reason is that the internal abort task could be blocked in HW if the HW
is retrying to set up link. The internal abort task will be executed only
when the retry process finished.
The maximum time is 5s for the retry of setting up link. So, the timer
expire should be more than 5s. This patch increases it from 110ms to 6s.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
It is not right to set the register PROG_PHY_LINK_RATE while PHY is still
enabled. So if we want to change PHY linkrate, we need to disable PHY before
setting the register PROG_PHY_LINK_RATE, and then start-up PHY. This patch
is to fix this issue.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In sysfs, there are two files about minimum linkrate, and also two files for
maximum linkrate. Take maximum linkrate example, maximum_linkrate_hw is
read-only and indicated by the register HARD_PHY_LINKRATE, and
maximum_linkrate is read-write and corresponding to the register
PROG_PHY_LINK_RATE.
But in the function phy_up_v*_hw(), we get *_linkrate value from
HARD_PHY_LINKRATE. It is not right. This patch is to fix this issue.
Unreferenced PHY-interrupt enum is also removed for v3 hw.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The register SAS_PHY_CTRL is configured according to signal quality. The
signal quality is calculated by signal attenuation of hardware physical
link. It may be different for different PCB layout.
So, in order to give better support to new board, this patch add support to
reading the devicetree property, "hisilicon,signal-attenuation". Of course,
we still keep an default value in driver to adapt old board.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The SCSI PRE-FETCH (10 or 16) command is present both on hard disks
and some SSDs. It is useful when the address of the next block(s) to
be read is known but it is not following the LBA of the current READ
(so read-ahead won't help). It returns two "good" SCSI Status values.
If the requested blocks have fitted (or will most likely fit (when
the IMMED bit is set)) into the disk's cache, it returns CONDITION
MET. If it didn't (or will not) fit then it returns GOOD status.
The goal of this patch is to stop the SCSI subsystem treating the
CONDITION MET SCSI status as an error. The current state makes the
PRE-FETCH command effectively unusable via pass-throughs.
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Updated Copyright in files updated as part of 12.0.0.1
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Update the driver version to 12.0.0.1
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver fails to allocate command buffers in the routine
lpfc_new_scsi_buf_s4
There is an inconsistency between lpfc_mem_alloc(), where the
phba->lpfc_sg_dma_buf_pool is created, and lpfc_new_scsi_buf_s4(),
when we allocate a buffer from the pool and check the alignment. The
alignment should be on a page boundary, based on LPFC_SLI3_BG_ENABLED in
sli3_options, for both cases.
Fix by explicitly tracking sli4 vs sli3 and BG options. The result is that
phba->cfg_sg_dma_buf_size is now set correctly for SLI-4.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
POST_SGL_PAGES mailbox command failed with status (timeout).
wait_event_interruptible_timeout when called from mailbox wait interface,
gets interrupted, and will randomly fail. Behavior seems very specific to 1
particular server type.
Fix by changing from wait_event_interruptible_timeout to
wait_for_completion_timeout.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When a port is configured for NVME and SCSI Initiator support and it probes
a target supporting both SCSI and NVME, NVME devices are discovered, but
SCSI devices are not.
The nlp_fc4_type for all NPorts should be cleared on Link Up or just before
GID_FTs get issued, as opposed to just during GID_FT cmpl. RSCN activity as
well as Link Up can trigger GID_FT. One GID_FT may complete before the next
one is issued.
Fix by clearng nlp_fc4_type on link up and just before both GID_FTs are
issued. During port swapping, copy nlp_fc4_type to the new ndlp
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
To reduce latency when initializing WQE content, created templates for the
most common wqes. This reduces the number of operations taken to set the
content. It's not a lot of speed up, but every bit helps.
This patch updates the NVME target path.
[mkp: fixed typo]
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
To reduce latency when initializing WQE content, create templates for the
most common wqes. This reduces the number of operations taken to set the
content. It's not a lot of speed up, but every bit helps.
This patch updates the NVME initiator path.
[mkp: fixed typo]
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver is very sloppy about the WQE structure passed between routines.
The base struct type is a 64byte wqe. But in many routines they typecast and
access 128byte wqes. There were a couple of cases in the past (corrected
already) where the typecasts were incorrectly done and the 64byte buffer was
accessed as a 128 byte buffer.
Clean this up by properly declaring wqe's as 128byte wqe's and removing the
typecasts. 64byte wqes are considered a subset of the 128byte wqes.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
First Burst support was not properly indicated in NVMe PRLI.
Correct the bit position and the logic to check and set first burst support.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Commit 6e8e1c14c6 ("scsi: lpfc: Add WQ Full Logic for NVME Target") fails
the static checker. Checker correctly identified a missing unlock on a
return path.
Add the unlock.
Fixes: 6e8e1c14c6 ("scsi: lpfc: Add WQ Full Logic for NVME Target")
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use dma_pool_zalloc() instead of dma_pool_alloc + memset
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Commit 1351e69fc6 ("scsi: lpfc: Add push-to-adapter support to sli4")
fails compilation on some 32-bit systems as writeq() is not supported on
all architectures. Additionally, it was pointed out that as writeX()
does byteswapping if necessary for pci vs the cpu endianness, the code
was broken on BE PPC.
After discussions with Arnd Bergmann, we've resolved the issue
to the following:
Instead of writeX(), use __raw_writeX() - which writes to io
space while preserving byte order. To use this, the code
was changed to use a different buffer that lpfc prepped
via sli_pcimem_bcopy() that was set to the bytestream to
be written.
On platforms with __raw_writeq support, use the routine, otherwise
use __raw_writel()
[mkp: checkpatch]
Fixes: 1351e69fc6 ("scsi: lpfc: Add push-to-adapter support to sli4")
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In scsi core, __scsi_queue_insert should just put request back on the
queue and retry using the same command as before. However, for blk-mq,
scsi_mq_requeue_cmd is employed here which will unprepare the
request. To align with the semantics of __scsi_queue_insert, use
blk_mq_requeue_request with kick_requeue_list == true and put the
reference of scsi_device.
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use dma_pool_zalloc() instead of dma_pool_alloc + memset
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Acked-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The newly added code mixes up phys_addr_t/resource_size_t with dma_addr_t
and void pointers, as seen from these compiler warning:
drivers/scsi/mpt3sas/mpt3sas_base.c: In function '_base_get_chain_phys':
drivers/scsi/mpt3sas/mpt3sas_base.c:235:21: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
base_chain_phys = (void *)ioc->chip_phys + MPI_FRAME_START_OFFSET +
^
drivers/scsi/mpt3sas/mpt3sas_base.c: In function '_clone_sg_entries':
drivers/scsi/mpt3sas/mpt3sas_base.c:427:20: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
sgel->Address = (dma_addr_t)dst_addr_phys;
^
drivers/scsi/mpt3sas/mpt3sas_base.c:438:7: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
(dma_addr_t)buff_ptr_phys;
^
drivers/scsi/mpt3sas/mpt3sas_base.c:444:10: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
(dma_addr_t)buff_ptr_phys;
Both dma_addr_t and phys_addr_t may be wider than a pointer, so we must
avoid the conversion to pointer types. This also helps readability.
A second problem is treating MMIO addresses from a 'struct resource'
as addresses that can be used for DMA on that device. In almost all
cases, those are the same, but on some of the more obscure architectures,
PCI memory address 0 is mapped into the CPU address space at a nonzero
offset. I don't have a good fix for that, so I'm adding a comment here,
plus a WARN_ON() that triggers whenever the phys_addr_t number is
outside of the low 32-bit address space and causes a straight overflow
when assigned to the 32-bit sgel->Address.
Fixes: 182ac784b4 ("scsi: mpt3sas: Introduce Base function for cloning.")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
On 64 bit CPUs there is a memory corruption bug on probe(). It should
be a u32 pointer instead of an unsigned long pointer or we write past
the end of the setupdata[] array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch fixes the byte order of the SGPIO api and brings it back in
sync with ledmon v0.80 and above.
[mkp: added missing SoB and fixed whitespace]
Signed-off-by: Wilfried Weissmann <wilfried.weissmann@gmx.at>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Avoid that the kernel-doc tool complains about mismatches between
kernel-doc headers and function definitions. Avoid that errors like the
following are reported when building the UFS driver with W=1:
drivers/scsi/ufs/tc-dwc-g210-pci.c:60: error: Cannot parse struct or union!
drivers/scsi/ufs/tc-dwc-g210-pltfrm.c:26: warning: cannot understand function prototype: 'struct ufs_hba_variant_ops tc_dwc_g210_20bit_pltfm_hba_vops = '
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Vivek Gautam <vivek.gautam@codeaurora.org>
Cc: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Avoid that the kernel-doc tool complains about a mismatch between the
kernel-doc header and the function argument list.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Sending I/O through 32 bit descriptors to Ventura series of controller
results in IO timeout on certain conditions. This error only occurs on
systems with high I/O activity.
Changes in this patch will prevent driver from using 32 bit descriptor
and use 64 bit Descriptors
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If the posted request has an error of any type, the IOC writes
a Reply message into a host-based system reply message frame.
This functions clone it in the BAR0 mapped region.
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
1) Added function _base_clone_mpi_to_sys_mem to clone
MPI request into system BAR0 mapped region.
2) Separate out MPI Endpoint IO submissions to function
_base_put_smid_mpi_ep_scsi_io.
3) MPI EP requests are submitted in two 32 bit MMIO writes.
from _base_mpi_ep_writeq.
For 32 bit Arch,_base_writeq function is identical
to _base_mpi_ep_writeq, Removed duplicate code as suggested.
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
All scsi IO's and config request's data buffer and sgl are cloned to
system memory in _clone_sg_entries before submitting it to firmware.
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
For MPI Endpoint/Mcpu, driver should double buffer data buffer/SGLs.
This is normally copied from host to internal memory of IOC by DMA
engine of PCI device. Since the interface to DMA from host to mCPU is
not present for Mcpu/MPI Endpoint device, driver does double copy of
those buffers directly to the mCPU memory region via BAR0 region.
Introduced API to calculate and return BAR0 mapped host buffer's
physical and virtual address for the provided smid.
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This configures shost max sector to 128, single reply descriptor post
queue, sgl table size to 16 and 32 bit DMA for MPI Endpoint and it
supports 64K as max IO.
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
