diff options
| author | Long Li <longli@microsoft.com> | 2026-06-05 03:57:12 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-06-10 03:22:26 +0300 |
| commit | d478457fc1b7fd80f481c323a8d22567d99d6881 (patch) | |
| tree | 6a012e6d31eb95c28d6de079796951ad21f33260 /include | |
| parent | d7c253d614887f5f006fe868f30b65fb72d3c193 (diff) | |
| download | linux-d478457fc1b7fd80f481c323a8d22567d99d6881.tar.xz | |
net: mana: Introduce GIC context with refcounting for interrupt management
To allow Ethernet EQs to use dedicated or shared MSI-X vectors and RDMA
EQs to share the same MSI-X, introduce a GIC (GDMA IRQ Context) with
reference counting. This allows the driver to create an interrupt context
on an assigned or unassigned MSI-X vector and share it across multiple
EQ consumers.
Signed-off-by: Long Li <longli@microsoft.com>
Link: https://patch.msgid.link/20260605005717.2059954-4-longli@microsoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/mana/gdma.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h index 145cc59dfc19..e3ee85c614ec 100644 --- a/include/net/mana/gdma.h +++ b/include/net/mana/gdma.h @@ -388,6 +388,11 @@ struct gdma_irq_context { spinlock_t lock; struct list_head eq_list; char name[MANA_IRQ_NAME_SZ]; + unsigned int msi; + unsigned int irq; + refcount_t refcount; + unsigned int bitmap_refs; + bool dyn_msix; }; enum gdma_context_flags { @@ -450,6 +455,9 @@ struct gdma_context { unsigned long flags; + /* Protect access to GIC context */ + struct mutex gic_mutex; + /* Indicate if this device is sharing MSI for EQs on MANA */ bool msi_sharing; @@ -1027,6 +1035,10 @@ int mana_gd_resume(struct pci_dev *pdev); bool mana_need_log(struct gdma_context *gc, int err); +struct gdma_irq_context *mana_gd_get_gic(struct gdma_context *gc, + bool use_msi_bitmap, + int *msi_requested); +void mana_gd_put_gic(struct gdma_context *gc, bool use_msi_bitmap, int msi); int mana_gd_query_device_cfg(struct gdma_context *gc, u32 proto_major_ver, u32 proto_minor_ver, u32 proto_micro_ver, u16 *max_num_vports, u8 *bm_hostmode); |