diff options
| -rw-r--r-- | drivers/scsi/cxlflash/ocxl_hw.c | 39 | ||||
| -rw-r--r-- | drivers/scsi/cxlflash/ocxl_hw.h | 3 |
2 files changed, 42 insertions, 0 deletions
diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c index 235803407b89..b39a03d149d0 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.c +++ b/drivers/scsi/cxlflash/ocxl_hw.c @@ -164,6 +164,44 @@ static int ocxlflash_process_element(void *ctx_cookie) } /** + * start_context() - local routine to start a context + * @ctx: Adapter context to be started. + * + * Assign the context specific MMIO space. + * + * Return: 0 on success, -errno on failure + */ +static int start_context(struct ocxlflash_context *ctx) +{ + struct ocxl_hw_afu *afu = ctx->hw_afu; + struct ocxl_afu_config *acfg = &afu->acfg; + bool master = ctx->master; + + if (master) { + ctx->psn_size = acfg->global_mmio_size; + ctx->psn_phys = afu->gmmio_phys; + } else { + ctx->psn_size = acfg->pp_mmio_stride; + ctx->psn_phys = afu->ppmmio_phys + (ctx->pe * ctx->psn_size); + } + + return 0; +} + +/** + * ocxlflash_start_context() - start a kernel context + * @ctx_cookie: Adapter context to be started. + * + * Return: 0 on success, -errno on failure + */ +static int ocxlflash_start_context(void *ctx_cookie) +{ + struct ocxlflash_context *ctx = ctx_cookie; + + return start_context(ctx); +} + +/** * ocxlflash_set_master() - sets the context as master * @ctx_cookie: Adapter context to set as master. */ @@ -581,6 +619,7 @@ static void *ocxlflash_fops_get_context(struct file *file) const struct cxlflash_backend_ops cxlflash_ocxl_ops = { .module = THIS_MODULE, .process_element = ocxlflash_process_element, + .start_context = ocxlflash_start_context, .set_master = ocxlflash_set_master, .get_context = ocxlflash_get_context, .dev_context_init = ocxlflash_dev_context_init, diff --git a/drivers/scsi/cxlflash/ocxl_hw.h b/drivers/scsi/cxlflash/ocxl_hw.h index 18236e6dafd5..ee19717ad682 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.h +++ b/drivers/scsi/cxlflash/ocxl_hw.h @@ -41,4 +41,7 @@ struct ocxlflash_context { struct address_space *mapping; /* Mapping for pseudo filesystem */ bool master; /* Whether this is a master context */ int pe; /* Process element */ + + phys_addr_t psn_phys; /* Process mapping */ + u64 psn_size; /* Process mapping size */ }; |