97 lines
4.1 KiB
C
97 lines
4.1 KiB
C
/****************************************************************************
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* arch/arm/src/sama5/chip/sam_ehci.h
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_SAMA5_CHIP_SAM_EHCI_H
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#define __ARCH_ARM_SRC_SAMA5_CHIP_SAM_EHCI_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/usb/ohci.h>
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#include "chip.h"
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#include "chip/sam_memorymap.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* The SAMA5 supports 3 root hub ports */
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#define SAM_EHCI_NRHPORT 3
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/* Registers ****************************************************************/
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/* Traditionally, NuttX specifies register locations using individual
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* register offsets from a base address. That tradition is broken here and,
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* instead, register blocks are represented as structures. This is done here
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* because, in principle, EHCI operational register address may not be known
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* at compile time; the operational registers lie at an offset specified in
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* the 'caplength' byte of the Host Controller Capability Registers.
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*
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* However, for the case of the SAMA5 EHCI, we know apriori that the value
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* of 'caplength' is 0x10. We keep this structure, however, to faciltate
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* porting this driver to other environments where, perhaps, such knowledge
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* is not available.
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*/
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/* Host Controller Capability Registers */
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#define HCCR ((struct ehci_hccr_s *)SAM_UHPEHCI_VSECTION)
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/* Host Controller Operational Registers */
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#define HCOR ((volatile struct ehci_hcor_s *)(SAM_UHPEHCI_VSECTION + 0x10))
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/* USB2 Debug Port Register Interface. These are not documented, but I was
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* able to find these by registers by peeking at EHCI memory.
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*/
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#define HDEBUG ((volatile struct ehci_debug_s *)(SAM_UHPEHCI_VSECTION + 0x90))
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#endif /* __ARCH_ARM_SRC_SAMA5_CHIP_SAM_EHCI_H */
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