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scsi: cxlflash: Hardware AFU for OCXL

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When an adapter is initialized, transport specific configuration and MMIO
mapping details need to be saved. For CXL, this data is managed by the
underlying kernel module. To maintain a separation between the cxlflash core
and underlying transports, introduce a new structure to store data specific to
the OCXL AFU.

Initially only the pointers to underlying PCI and generic devices are added to
this new structure - it will be expanded further in future commits. Services
to create and destroy this hardware AFU are added and integrated in the probe
and exit paths of the driver.

Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Uma Krishnan
2018-03-26 11:31:01 -05:00
committed by Martin K. Petersen
parent 76ebe01fce
commit 48e077dbb4
5 changed files with 73 additions and 2 deletions
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1
drivers/scsi/cxlflash/backend.h
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@@ -36,6 +36,7 @@ struct cxlflash_backend_ops {
int (*allocate_afu_irqs)(void *ctx_cookie, int num);
void (*free_afu_irqs)(void *ctx_cookie);
void * (*create_afu)(struct pci_dev *dev);
void (*destroy_afu)(void *afu_cookie);
struct file * (*get_fd)(void *ctx_cookie, struct file_operations *fops,
int *fd);
void * (*fops_get_context)(struct file *file);