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2015-11-25hisi_sas: Add hisi sas device typeJohn Garry
Include initialisation. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Add hisi_hba workqueueJohn Garry
Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Set dev DMA maskJohn Garry
Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Add phy SAS ADDR initializationJohn Garry
The SAS address for the HBA comes from the device tree. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Add cq structure initializationJohn Garry
Each completion queue has a structure. This is mainly for passing to irq handler so we know which queue the irq occured on. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Add slot init codeJohn Garry
Add functionality to init slot indexing. Slot indexing is for the host to track which slots (or tags) are free and which are used. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Add hisi_sas_removeJohn Garry
This patch also includes relevant memory/pool freeing and sas/scsi host removal. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Allocate memories and create poolsJohn Garry
Allocate DMA and non-DMA memories for the controller. Also create DMA pools. These include: - Delivery queues - Completion queues - Command status buffer - Command table - ITCT (For device context) - Host slot info - IO status - Breakpoint - host slot indexing - SG data - FIS - interrupts names Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Add HW DMA structuresJohn Garry
Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Scan device treeJohn Garry
Scan the device tree for all properties. Also do this: - do ioremap for SAS registers - allocate memory for interrupt names Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Add scsi host registrationJohn Garry
Add functionality to register device as a scsi host. The SAS domain transport ops are empty at this point. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25hisi_sas: Add initial bare main driverJohn Garry
This patch adds the initial bare main driver for the HiSilicon SAS HBA. This only introduces the changes to build and load the main driver module. The complete driver consists of the core main module and also a module platform driver for driving the hw. The HBA is a platform device. Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25devicetree: bindings: scsi: HiSi SASJohn Garry
Add devicetree bindings for HiSilicon SAS driver. Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25scsi: Centralise ssp frame information unitsJohn Garry
The xfer_rdy, command, and task frame's iu structures are not available in <scsi/sas.h>, but only aic94xx driver folder. Add them to include/scsi/sas.h Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Introduce atp870_init()Ondrej Zary
Move 870-specific init code to a separate function atp870_init() Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Introduce atp885_init()Ondrej Zary
Move 885-specific init code to a separate function atp885_init() Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Introduce atp880_init()Ondrej Zary
Move 880-specific init code to a separate function atp880_init() Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Initialize tables earlierOndrej Zary
Call _init_tables before chip-specific initialization. This avoids code duplication and fixes a bug(?) in 880 init where the values read from flash into atpdev->sp are then overwritten by calling init_tables. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Remove scam_on from struct atp_unitOndrej Zary
scam_on is used only during probe, no need to keep it later. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Request IRQ later, remove weird lockingOndrej Zary
Allocate IRQ later during probe to avoid code duplication and also remove the need for weird locking in _probe. (It was probably there to prevent race with the IRQ handler?) Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Use pci_request_regionsOndrej Zary
Use pci_request_regions and do it before accessing the I/O ports. Also add missing pci_disable_device() call to atp870u_remove(). Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Introduce is880(), is885() and remove dev_idOndrej Zary
Introduce chip type inline functions to simplify code, allowing to delete dev_id from struct atp_unit. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Simplify _probe()Ondrej Zary
Move shpnt common code to the top, remove base_io, use pci_resource_len. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Remove chip_ver from struct atp_unitOndrej Zary
chip_ver is used for wide chip detection only. Remove it and use a local variable instead (for 870; 880 and 885 are always wide). Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Improve unsupported chip detectionOndrej Zary
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Improve _probe()Ondrej Zary
Move scsi_host_alloc() to the top of _probe() to remove code duplication, *p and unneeded atpdev (de)allocation and copying. While at it, fix the error paths to return real error codes and also add missing pci_disble_device() call. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Remove unused irq from struct atp_unitOndrej Zary
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Remove useless and broken card countingOndrej Zary
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Use n_io_port in request_region and release_regionOndrej Zary
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Use module_pci_driverOndrej Zary
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Remove empty tscam_885()Ondrej Zary
tscam_885() is empty (except a delay) so remove it. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Reduce log spam on module load/unloadOndrej Zary
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Introduce atp_set_host_idOndrej Zary
The code for setting host adapter ID is the same for all chips. Move it to a common function. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Fix incorrect writeb_io access to register 0x3aOndrej Zary
The ioport region is 0x20 bytes long so accessing 0x3a register using writeb_io is incorrect. Use writeb_base instead. There's no change in behavior as 870 chips have ioport = baseport. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Replace port 0x80 delay by udelayOndrej Zary
tscam() is using port 0x80 access for delays but that's x86-only. Use udelay(2) instead. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Convert remaining in[bwl] and out[bwl] to wrappersOndrej Zary
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Rename is885() to atp_is()Ondrej Zary
Now that all the is* functions except is885() are gone, rename is885() to atp_is() to avoid confusion. Don't know what "is" means, though... Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Remove is870()Ondrej Zary
Now that is885() supports everything from is870() and the rest of the code is almost identical, remove is870() and use is885() instead. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Move 870-specific code out of is870()Ondrej Zary
Move few remaining 870-specific code lines out of is870() Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Add remaining 870 support to is885()Ondrej Zary
Add remaining 870 support to is885(): - different synw, no synuw - synu[4] = 0x0c - atp_writeb_io(dev, c, 0x04, 0x00); instead of atp_writeb_io(dev, c, 0x14, 0x00); (isn't that a bug?) - atp_writeb_io(dev, c, 0x14, 0xff); instead of atp_writeb_io(dev, c, 0x14, 0x06); - different mbuf[3] and mbuf[4] checks Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Add wide_chip parameter to is870() and is885()Ondrej Zary
Don't check chip_ver in is870() but add wide_chip parameter for that. Then add the non-wide support to is885(). Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Remove is880()Ondrej Zary
Now that is880() and is885() are almost identical (except for some cpu_relax() calls and debug printks), remove is880() and use is885() instead. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Move chip-specific lines out of is880() and is885()Ondrej Zary
Move few chip-specifis lines out of is880() and is885() so they become almost identical. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Add channel parameter to is870() and is880()Ondrej Zary
Add channel parameter to is870() and is880() functions to simplify comparing them with is885(). Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Unify code format in is870(), is880() and is885()Ondrej Zary
Unify code formatting in is870(), is880() and is885() functions to simplify comparing them. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Convert is885() to use wrappersOndrej Zary
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Convert is880() to use wrappersOndrej Zary
Subtract 0x40 to use _io access wrappers. Now it's obvious that is870() and is880() are very similar. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Convert is870() to use wrappersOndrej Zary
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Introduce HW access wrappersOndrej Zary
Introduce *_read? and *_write? wrappers to improve code readability. Also make sure that baseport is always initialized, not only for ATP880. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-25atp870u: Remove ugly gotos #5Ondrej Zary
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinicke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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