diff options
| author | Alastair D'Silva <alastair@d-silva.org> | 2019-03-27 16:31:33 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-05-03 02:55:02 +1000 |
| commit | b9721d275cc2c5e6c07371239c827e0faf05a6b9 (patch) | |
| tree | 06ac877469c44d3c14a93a013440150818c6567a /drivers/misc/ocxl/context.c | |
| parent | 75ca758adbafc81804c39b2c200ecdc819a6c042 (diff) | |
ocxl: Allow external drivers to use OpenCAPI contexts
Most OpenCAPI operations require a valid context, so
exposing these functions to external drivers is necessary.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/misc/ocxl/context.c')
| -rw-r--r-- | drivers/misc/ocxl/context.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/misc/ocxl/context.c b/drivers/misc/ocxl/context.c index c73a859d2224..b60e674ac019 100644 --- a/drivers/misc/ocxl/context.c +++ b/drivers/misc/ocxl/context.c @@ -4,15 +4,17 @@ #include "trace.h" #include "ocxl_internal.h" -struct ocxl_context *ocxl_context_alloc(void) -{ - return kzalloc(sizeof(struct ocxl_context), GFP_KERNEL); -} - -int ocxl_context_init(struct ocxl_context *ctx, struct ocxl_afu *afu, +int ocxl_context_alloc(struct ocxl_context **context, struct ocxl_afu *afu, struct address_space *mapping) { int pasid; + struct ocxl_context *ctx; + + *context = kzalloc(sizeof(struct ocxl_context), GFP_KERNEL); + if (!*context) + return -ENOMEM; + + ctx = *context; ctx->afu = afu; mutex_lock(&afu->contexts_lock); @@ -43,6 +45,7 @@ int ocxl_context_init(struct ocxl_context *ctx, struct ocxl_afu *afu, ocxl_afu_get(afu); return 0; } +EXPORT_SYMBOL_GPL(ocxl_context_alloc); /* * Callback for when a translation fault triggers an error @@ -63,7 +66,7 @@ static void xsl_fault_error(void *data, u64 addr, u64 dsisr) wake_up_all(&ctx->events_wq); } -int ocxl_context_attach(struct ocxl_context *ctx, u64 amr) +int ocxl_context_attach(struct ocxl_context *ctx, u64 amr, struct mm_struct *mm) { int rc; @@ -75,7 +78,7 @@ int ocxl_context_attach(struct ocxl_context *ctx, u64 amr) } rc = ocxl_link_add_pe(ctx->afu->fn->link, ctx->pasid, - current->mm->context.id, ctx->tidr, amr, current->mm, + mm->context.id, ctx->tidr, amr, mm, xsl_fault_error, ctx); if (rc) goto out; @@ -85,6 +88,7 @@ out: mutex_unlock(&ctx->status_mutex); return rc; } +EXPORT_SYMBOL_GPL(ocxl_context_attach); static vm_fault_t map_afu_irq(struct vm_area_struct *vma, unsigned long address, u64 offset, struct ocxl_context *ctx) @@ -243,6 +247,7 @@ int ocxl_context_detach(struct ocxl_context *ctx) } return 0; } +EXPORT_SYMBOL_GPL(ocxl_context_detach); void ocxl_context_detach_all(struct ocxl_afu *afu) { @@ -280,3 +285,4 @@ void ocxl_context_free(struct ocxl_context *ctx) ocxl_afu_put(ctx->afu); kfree(ctx); } +EXPORT_SYMBOL_GPL(ocxl_context_free); |