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scsi: cxlflash: Support adapter context discovery 

Provide means to obtain the process element of an adapter context as well as
locate an adapter context by file.

Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Uma Krishnan 2018-03-26 11:32:20 -05:00 committed by Martin K. Petersen
parent 926a62f9bd
commit b18718c626
1 changed files with 26 additions and 0 deletions
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26
drivers/scsi/cxlflash/ocxl_hw.c
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@ -150,6 +150,19 @@ err1:
goto out;
}
/**
* ocxlflash_process_element() - get process element of the adapter context
* @ctx_cookie: Adapter context associated with the process element.
*
* Return: process element of the adapter context
*/
static int ocxlflash_process_element(void *ctx_cookie)
{
struct ocxlflash_context *ctx = ctx_cookie;
return ctx->pe;
}
/**
* ocxlflash_set_master() - sets the context as master
* @ctx_cookie: Adapter context to set as master.
@ -469,9 +482,21 @@ err1:
goto out;
}
/**
* ocxlflash_fops_get_context() - get the context associated with the file
* @file: File associated with the adapter context.
*
* Return: pointer to the context
*/
static void *ocxlflash_fops_get_context(struct file *file)
{
return file->private_data;
}
/* Backend ops to ocxlflash services */
const struct cxlflash_backend_ops cxlflash_ocxl_ops = {
.module = THIS_MODULE,
.process_element = ocxlflash_process_element,
.set_master = ocxlflash_set_master,
.get_context = ocxlflash_get_context,
.dev_context_init = ocxlflash_dev_context_init,
@ -479,4 +504,5 @@ const struct cxlflash_backend_ops cxlflash_ocxl_ops = {
.create_afu = ocxlflash_create_afu,
.destroy_afu = ocxlflash_destroy_afu,
.get_fd = ocxlflash_get_fd,
.fops_get_context = ocxlflash_fops_get_context,
};