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libpayload: Add support for interrupt transfers in EHCI

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This adds support for usb interrupt transfers in the EHCI driver. Split
transactions are supported, so this enables support for HID keyboards
devices over hubs in high-speed mode.

Change-Id: I9eb08f12b12c67ece10814952cb8651278b02f9d
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1083
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Nico Huber
2012-05-25 10:09:13 +02:00
committed by Stefan Reinauer
parent 4842dfe6f7
commit 62eb5b3837
2 changed files with 242 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
payloads/libpayload/drivers/usb/ehci_private.h
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@@ -61,9 +61,13 @@ typedef volatile struct {
typedef volatile struct {
u32 usbcmd;
#define HC_OP_RS 1
#define HC_OP_PERIODIC_SCHED_EN_SHIFT 4
#define HC_OP_PERIODIC_SCHED_EN (1 << HC_OP_PERIODIC_SCHED_EN_SHIFT)
#define HC_OP_ASYNC_SCHED_EN_SHIFT 5
#define HC_OP_ASYNC_SCHED_EN (1 << HC_OP_ASYNC_SCHED_EN_SHIFT)
u32 usbsts;
#define HC_OP_PERIODIC_SCHED_STAT_SHIFT 14
#define HC_OP_PERIODIC_SCHED_STAT (1 << HC_OP_PERIODIC_SCHED_STAT_SHIFT)
#define HC_OP_ASYNC_SCHED_STAT_SHIFT 15
#define HC_OP_ASYNC_SCHED_STAT (1 << HC_OP_ASYNC_SCHED_STAT_SHIFT)
u32 usbintr;
@@ -78,6 +82,7 @@ typedef volatile struct {
typedef volatile struct {
#define QTD_TERMINATE 1
#define QTD_PTR_MASK ~0x1f
u32 next_qtd;
u32 alt_next_qtd;
u32 token;
@@ -116,6 +121,7 @@ typedef volatile struct {
#define QH_NON_HS_CTRL_EP_SHIFT 27
#define QH_NAK_CNT_SHIFT 28
u32 epcaps;
#define QH_UFRAME_CMASK_SHIFT 8
#define QH_HUB_ADDRESS_SHIFT 16
#define QH_PORT_NUMBER_SHIFT 23
#define QH_PIPE_MULTIPLIER_SHIFT 30
@@ -128,6 +134,10 @@ typedef struct ehci {
hc_op_t *operation;
} ehci_t;
#define PS_TERMINATE 1
#define PS_TYPE_QH 1 << 1
#define PS_PTR_MASK ~0x1f
#define EHCI_INST(controller) ((ehci_t*)((controller)->instance))