diff options
| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2024-01-02 13:45:09 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-04 16:08:13 +0100 |
| commit | c99b38c412343053e9af187e595793c8805bb9b8 (patch) | |
| tree | f8e3d9a6cefd815dabb32e4b6455f47c728b7b66 /drivers/usb/host/xhci.h | |
| parent | 49a78b05d5ca1e23fd737747a8757b8bdc319b30 (diff) | |
xhci: add support to allocate several interrupters
Modify the XHCI drivers to accommodate for handling multiple event rings in
case there are multiple interrupters. Add the required APIs so clients are
able to allocate/request for an interrupter ring, and pass this information
back to the client driver. This allows for users to handle the resource
accordingly, such as passing the event ring base address to an audio DSP.
There is no actual support for multiple MSI/MSI-X vectors.
[export xhci_initialize_ring_info() -wcheng]
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
Link: https://lore.kernel.org/r/20240102214549.22498-2-quic_wcheng@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 90e6b6ef7bd2..a5c72a634e6a 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1774,7 +1774,7 @@ struct xhci_hcd { struct reset_control *reset; /* data structures */ struct xhci_device_context_array *dcbaa; - struct xhci_interrupter *interrupter; + struct xhci_interrupter **interrupters; struct xhci_ring *cmd_ring; unsigned int cmd_ring_state; #define CMD_RING_STATE_RUNNING (1 << 0) @@ -2085,6 +2085,10 @@ struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, int type, gfp_t flags); void xhci_free_container_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); +struct xhci_interrupter * +xhci_create_secondary_interrupter(struct usb_hcd *hcd, int num_seg); +void xhci_remove_secondary_interrupter(struct usb_hcd + *hcd, struct xhci_interrupter *ir); /* xHCI host controller glue */ typedef void (*xhci_get_quirks_t)(struct device *, struct xhci_hcd *); |