Add stubs for USB OHCI support.

Enable USB wrapper functions to call either ohci or ehci helpers.
Implement pci_config_maskw in place of pci_set_bus_master.
Introduce 'struct usb_pipe' in place of 'void *' for pipes.

1 files changed, 97 insertions, 0 deletions

diff --git a/src/usb-ohci.h b/src/usb-ohci.h
new file mode 100644
index 00000000..9d13f8ce
--- /dev/null
+++ b/src/usb-ohci.h
@@ -0,0 +1,97 @@
+#ifndef __USB_OHCI_H
+#define __USB_OHCI_H
+
+// usb-ohci.c
+struct usb_s;
+int ohci_init(struct usb_s *cntl);
+int ohci_control(u32 endp, int dir, const void *cmd, int cmdsize
+                 , void *data, int datasize);
+struct usb_pipe *ohci_alloc_intr_pipe(u32 endp, int period);
+int ohci_poll_intr(void *pipe, void *data);
+
+
+/****************************************************************
+ * ohci structs and flags
+ ****************************************************************/
+
+struct ohci_ed {
+    u32 hwINFO;
+    u32 hwTailP;
+    u32 hwHeadP;
+    u32 hwNextED;
+} PACKED;
+
+#define ED_ISO          (1 << 15)
+#define ED_SKIP         (1 << 14)
+#define ED_LOWSPEED     (1 << 13)
+#define ED_OUT          (0x01 << 11)
+#define ED_IN           (0x02 << 11)
+
+#define ED_C            (0x02)
+#define ED_H            (0x01)
+
+struct ohci_td {
+    u32 hwINFO;
+    u32 hwCBP;
+    u32 hwNextTD;
+    u32 hwBE;
+} PACKED;
+
+#define TD_CC       0xf0000000
+#define TD_CC_GET(td_p) ((td_p >>28) & 0x0f)
+#define TD_DI       0x00E00000
+#define TD_DI_SET(X) (((X) & 0x07)<< 21)
+
+#define TD_DONE     0x00020000
+#define TD_ISO      0x00010000
+
+#define TD_EC       0x0C000000
+#define TD_T        0x03000000
+#define TD_T_DATA0  0x02000000
+#define TD_T_DATA1  0x03000000
+#define TD_T_TOGGLE 0x00000000
+#define TD_DP       0x00180000
+#define TD_DP_SETUP 0x00000000
+#define TD_DP_IN    0x00100000
+#define TD_DP_OUT   0x00080000
+
+#define TD_R        0x00040000
+
+struct ohci_hcca {
+    u32  int_table[32];
+    u32  frame_no;
+    u32  done_head;
+    u8   reserved[120];
+} PACKED;
+
+struct ohci_regs {
+    u32  revision;
+    u32  control;
+    u32  cmdstatus;
+    u32  intrstatus;
+    u32  intrenable;
+    u32  intrdisable;
+
+    u32  hcca;
+    u32  ed_periodcurrent;
+    u32  ed_controlhead;
+    u32  ed_controlcurrent;
+    u32  ed_bulkhead;
+    u32  ed_bulkcurrent;
+    u32  donehead;
+
+    u32  fminterval;
+    u32  fmremaining;
+    u32  fmnumber;
+    u32  periodicstart;
+    u32  lsthresh;
+
+    u32  roothub_a;
+    u32  roothub_b;
+    u32  roothub_status;
+    u32  roothub_portstatus[15];
+} PACKED;
+
+#define OHCI_INTR_MIE   (1 << 31)
+
+#endif // usb-ohci.h