diff options
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 431afd864d..32dd611efa 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -111,9 +111,10 @@ struct xhci_hccr { #define HCS_IST(p) (((p) >> 0) & 0xf) /* bits 4:7, max number of Event Ring segments */ #define HCS_ERST_MAX(p) (((p) >> 4) & 0xf) +/* bits 21:25 Hi 5 bits of Scratchpad buffers SW must allocate for the HW */ /* bit 26 Scratchpad restore - for save/restore HW state - not used yet */ -/* bits 27:31 number of Scratchpad buffers SW must allocate for the HW */ -#define HCS_MAX_SCRATCHPAD(p) (((p) >> 27) & 0x1f) +/* bits 27:31 Lo 5 bits of Scratchpad buffers SW must allocate for the HW */ +#define HCS_MAX_SCRATCHPAD(p) ((((p) >> 16) & 0x3e0) | (((p) >> 27) & 0x1f)) /* HCSPARAMS3 - hcs_params3 - bitmasks */ /* bits 0:7, Max U1 to U0 latency for the roothub ports */ @@ -1037,6 +1038,10 @@ struct xhci_erst { unsigned int erst_size; }; +struct xhci_scratchpad { + u64 *sp_array; +}; + /* * Each segment table entry is 4*32bits long. 1K seems like an ok size: * (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table, @@ -1224,6 +1229,7 @@ struct xhci_ctrl { struct xhci_intr_reg *ir_set; struct xhci_erst erst; struct xhci_erst_entry entry[ERST_NUM_SEGS]; + struct xhci_scratchpad *scratchpad; struct xhci_virt_device *devs[MAX_HC_SLOTS]; int rootdev; }; |