diff options
| author | Abhijit Gangurde <abhijit.gangurde@amd.com> | 2025-09-03 11:45:58 +0530 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2025-09-11 02:18:36 -0400 |
| commit | 11016c795eec341e8f087e95dea78189b88057a6 (patch) | |
| tree | 9d2b9b0959135d3b40b812f3fb9224c9d87e992d /drivers/net/ethernet/pensando/ionic/ionic_api.h | |
| parent | 2dc6a6a6782def51879ff3e739f6e9706d6c1c4f (diff) | |
net: ionic: Provide doorbell and CMB region information
The RDMA device needs information of controller memory bar and
doorbell capability to share with user context. Discover CMB regions
and express doorbell capabilities on device init.
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Co-developed-by: Pablo Cascón <pablo.cascon@amd.com>
Signed-off-by: Pablo Cascón <pablo.cascon@amd.com>
Co-developed-by: Allen Hubbe <allen.hubbe@amd.com>
Signed-off-by: Allen Hubbe <allen.hubbe@amd.com>
Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
Link: https://patch.msgid.link/20250903061606.4139957-7-abhijit.gangurde@amd.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/pensando/ionic/ionic_api.h')
| -rw-r--r-- | drivers/net/ethernet/pensando/ionic/ionic_api.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_api.h b/drivers/net/ethernet/pensando/ionic/ionic_api.h index 5fd23aa8c5a1..bd88666836b8 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_api.h +++ b/drivers/net/ethernet/pensando/ionic/ionic_api.h @@ -106,4 +106,26 @@ int ionic_intr_alloc(struct ionic_lif *lif, struct ionic_intr_info *intr); */ void ionic_intr_free(struct ionic_lif *lif, int intr); +/** + * ionic_get_cmb - Reserve cmb pages + * @lif: Logical interface + * @pgid: First page index + * @pgaddr: First page bus addr (contiguous) + * @order: Log base two number of pages (PAGE_SIZE) + * @stride_log2: Size of stride to determine CMB pool + * @expdb: Will be set to true if this CMB region has expdb enabled + * + * Return: zero or negative error status + */ +int ionic_get_cmb(struct ionic_lif *lif, u32 *pgid, phys_addr_t *pgaddr, + int order, u8 stride_log2, bool *expdb); + +/** + * ionic_put_cmb - Release cmb pages + * @lif: Logical interface + * @pgid: First page index + * @order: Log base two number of pages (PAGE_SIZE) + */ +void ionic_put_cmb(struct ionic_lif *lif, u32 pgid, int order); + #endif /* _IONIC_API_H_ */ |