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cxl: Introduce implementation-specific API

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The backend API (in cxl.h) lists some low-level functions whose
implementation is different on bare-metal and in a guest. Each
environment implements its own functions, and the common code uses
them through function pointers, defined in cxl_backend_ops

Co-authored-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Frederic Barrat
2016-03-04 12:26:28 +01:00
committed by Michael Ellerman
parent cca44c0192
commit 5be587b111
11 changed files with 185 additions and 120 deletions
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8
drivers/misc/cxl/api.c
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@@ -100,7 +100,7 @@ EXPORT_SYMBOL_GPL(cxl_allocate_afu_irqs);
void cxl_free_afu_irqs(struct cxl_context *ctx)
{
afu_irq_name_free(ctx);
cxl_release_irq_ranges(&ctx->irqs, ctx->afu->adapter);
cxl_ops->release_irq_ranges(&ctx->irqs, ctx->afu->adapter);
}
EXPORT_SYMBOL_GPL(cxl_free_afu_irqs);
@@ -176,7 +176,7 @@ int cxl_start_context(struct cxl_context *ctx, u64 wed,
cxl_ctx_get();
if ((rc = cxl_attach_process(ctx, kernel, wed , 0))) {
if ((rc = cxl_ops->attach_process(ctx, kernel, wed, 0))) {
put_pid(ctx->pid);
cxl_ctx_put();
goto out;
@@ -342,11 +342,11 @@ int cxl_afu_reset(struct cxl_context *ctx)
struct cxl_afu *afu = ctx->afu;
int rc;
rc = __cxl_afu_reset(afu);
rc = cxl_ops->afu_reset(afu);
if (rc)
return rc;
return cxl_afu_check_and_enable(afu);
return cxl_ops->afu_check_and_enable(afu);
}
EXPORT_SYMBOL_GPL(cxl_afu_reset);