diff options
| author | Stefan Raspl <raspl@linux.ibm.com> | 2023-01-23 19:17:47 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-01-25 09:46:48 +0000 |
| commit | 1baedb13f1d50ae8c7852134fdf934b4463e9baa (patch) | |
| tree | 6db6f8ba24534ba4c51974020a5a957a0d8e70e5 /include | |
| parent | 462502ff9acb7bb02405e3e486428472db7c48dc (diff) | |
s390/ism: Introduce struct ism_dmb
Conceptually, a DMB is a structure that belongs to ISM devices. However,
SMC currently 'owns' this structure. So future exploiters of ISM devices
would be forced to include SMC headers to work - which is just weird.
Therefore, we switch ISM to struct ism_dmb, introduce a new public header
with the definition (will be populated with further API calls later on),
and, add a thin wrapper to please SMC. Since structs smcd_dmb and ism_dmb
are identical, we can simply convert between the two for now.
Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Jan Karcher <jaka@linux.ibm.com>
Signed-off-by: Wenjia Zhang <wenjia@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ism.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/ism.h b/include/linux/ism.h new file mode 100644 index 000000000000..69bfbf0faaa1 --- /dev/null +++ b/include/linux/ism.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Internal Shared Memory + * + * Definitions for the ISM module + * + * Copyright IBM Corp. 2022 + */ +#ifndef _ISM_H +#define _ISM_H + +struct ism_dmb { + u64 dmb_tok; + u64 rgid; + u32 dmb_len; + u32 sba_idx; + u32 vlan_valid; + u32 vlan_id; + void *cpu_addr; + dma_addr_t dma_addr; +}; + +#endif /* _ISM_H */ |