diff options
Diffstat (limited to 'drivers/misc/cxl/context.c')
| -rw-r--r-- | drivers/misc/cxl/context.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c index ac2531e4ad32..4472ce11f98d 100644 --- a/drivers/misc/cxl/context.c +++ b/drivers/misc/cxl/context.c @@ -188,13 +188,26 @@ int cxl_context_iomap(struct cxl_context *ctx, struct vm_area_struct *vma) if (ctx->afu->current_mode == CXL_MODE_DEDICATED) { if (start + len > ctx->afu->adapter->ps_size) return -EINVAL; + + if (cxl_is_psl9(ctx->afu)) { + /* + * Make sure there is a valid problem state + * area space for this AFU. + */ + if (ctx->master && !ctx->afu->psa) { + pr_devel("AFU doesn't support mmio space\n"); + return -EINVAL; + } + + /* Can't mmap until the AFU is enabled */ + if (!ctx->afu->enabled) + return -EBUSY; + } } else { if (start + len > ctx->psn_size) return -EINVAL; - } - if (ctx->afu->current_mode != CXL_MODE_DEDICATED) { - /* make sure there is a valid per process space for this AFU */ + /* Make sure there is a valid per process space for this AFU */ if ((ctx->master && !ctx->afu->psa) || (!ctx->afu->pp_psa)) { pr_devel("AFU doesn't support mmio space\n"); return -EINVAL; |