Add start of USB host controller
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3176 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
108f6c2bad
commit
8c243b3182
@ -161,9 +161,10 @@ void up_initialize(void)
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up_netinitialize();
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/* Initialize USB */
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/* Initialize USB -- device and/or host */
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up_usbinitialize();
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up_usbhostinitialize();
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up_ledon(LED_IRQSENABLED);
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}
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@ -267,7 +267,6 @@ extern void up_netinitialize(void);
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# define up_netinitialize()
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#endif
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#ifdef CONFIG_USBDEV
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extern void up_usbinitialize(void);
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extern void up_usbuninitialize(void);
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@ -276,6 +275,12 @@ extern void up_usbuninitialize(void);
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# define up_usbuninitialize()
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#endif
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#ifdef CONFIG_USBHOST
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extern void up_usbhostinitialize(void);
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#else
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# define up_usbhostinitialize()
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __UP_INTERNAL_H */
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@ -69,6 +69,10 @@ ifeq ($(CONFIG_USBDEV),y)
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CHIP_CSRCS += lpc17_usbdev.c
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endif
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ifeq ($(CONFIG_USBHOST),y)
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CHIP_CSRCS += lpc17_usbhost.c
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endif
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ifeq ($(CONFIG_LPC17_GPDMA),y)
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CHIP_CSRCS += lpc17_gpdma.c
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endif
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@ -41,7 +41,7 @@
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************************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/ohci.h>
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#include <nuttx/usb/ohci.h>
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#include "chip.h"
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#include "lpc17_memorymap.h"
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@ -52,7 +52,7 @@
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/* Register offsets *****************************************************************/
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/* USB Host Controller (OHCI) *******************************************************/
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/* See include/nuttx/ohci.h */
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/* See include/nuttx/usb/ohci.h */
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#define LPC17_USBHOST_MODID_OFFSET 0x00fc /* Module ID/Revision ID */
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@ -270,7 +270,7 @@
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/* Register bit definitions *********************************************************/
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/* USB Host Controller (OHCI) *******************************************************/
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/* See include/nuttx/ohci.h */
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/* See include/nuttx/usb/ohci.h */
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/* Module ID/Revision ID */
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@ -299,8 +299,7 @@
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#define USBOTG_STCTRL_PORTFUNC_SHIFT (0) /* Bits 0-1: Controls port function */
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#define USBOTG_STCTRL_PORTFUNC_MASK (3 << USBOTG_STCTRL_PORTFUNC_SHIFT)
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# define USBOTG_STCTRL_PORTFUNC_HNPOK (1 << USBOTG_STCTRL_PORTFUNC_SHIFT) /* HNP suceeded */
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#define USBOTG_STCTRL_TMRSCALE_SHIFT (0) /* Bits 2-3: Timer scale selection */
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#define USBOTG_STCTRL_TMRSCALE_SHIFT (2) /* Bits 2-3: Timer scale selection */
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#define USBOTG_STCTRL_TMRSCALE_MASK (3 << USBOTG_STCTRL_TMR_SCALE_SHIFT)
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# define USBOTG_STCTRL_TMRSCALE_10US (0 << USBOTG_STCTRL_TMR_SCALE_SHIFT) /* 10uS (100 KHz) */
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# define USBOTG_STCTRL_TMRSCALE_100US (1 << USBOTG_STCTRL_TMR_SCALE_SHIFT) /* 100uS (10 KHz) */
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@ -576,6 +575,14 @@
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#define USBDEV_CLK_OTGCLK (1 << 3) /* Bit 3: OTG clock (OTG only) */
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#define USBDEV_CLK_AHBCLK (1 << 4) /* Bit 4: AHB clock */
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/* Bits 5-31: Reserved */
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/* Alternate naming */
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#define USBOTG_CLK_HOSTCLK USBDEV_CLK_HOSTCLK
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#define USBOTG_CLK_DEVCLK USBDEV_CLK_DEVCLK
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#define USBOTG_CLK_I2CCLK USBDEV_CLK_I2CCLK
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#define USBOTG_CLK_PORTSELCLK USBDEV_CLK_PORTSELCLK
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#define USBOTG_CLK_OTGCLK USBDEV_CLK_OTGCLK
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#define USBOTG_CLK_AHBCLK USBDEV_CLK_AHBCLK
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/* Endpoints *************************************************************************/
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480
arch/arm/src/lpc17xx/lpc17_usbhost.c
Executable file
480
arch/arm/src/lpc17xx/lpc17_usbhost.c
Executable file
@ -0,0 +1,480 @@
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/*******************************************************************************
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* arch/arm/src/lpc17xx/lpc17_usbhost.c
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*
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* Copyright (C) 2010 Gregory Nutt. All rights reserved.
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* Authors: Rafael Noronha
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* Gregory Nutt <spudmonkey@racsa.co.cr>
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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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/*******************************************************************************
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* Included Files
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*******************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/usb/usb.h>
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#include <nuttx/usb/usbhost.h>
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#include <nuttx/usb/ohci.h>
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#include <nuttx/usb/usbhost_trace.h>
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#include <arch/irq.h>
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#include <arch/board/board.h>
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#include "chip.h"
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#include "up_arch.h"
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#include "up_internal.h"
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#include "lpc17_internal.h"
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#include "lpc17_usb.h"
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#include "lpc17_syscon.h"
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/*******************************************************************************
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* Definitions
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*******************************************************************************/
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/* Configuration ***************************************************************/
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/* CLKCTRL enable bits */
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#define LPC17_CLKCTRL_ENABLES (USBOTG_CLK_HOSTCLK|USBOTG_CLK_DEVCLK|\
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USBOTG_CLK_I2CCLK|USBOTG_CLK_OTGCLK|\
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USBOTG_CLK_AHBCLK)
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/* Dump GPIO registers */
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#if defined(CONFIG_LPC17_USBHOST_REGDEBUG) && defined(CONFIG_DEBUG_GPIO)
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# define usbhost_dumpgpio() \
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do { \
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lpc17_dumpgpio(GPIO_USB_DP, "D+ P0.29; D- P0.30"); \
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lpc17_dumpgpio(GPIO_USB_UPLED, "LED P1:18; PPWR P1:19 PWRD P1:22 PVRCR P1:27); \
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} while (0);
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#else
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# define usbhost_dumpgpio()
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#endif
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/* USB Host Memory *************************************************************/
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#warning "Needs to be removed from the heap in lpc17_allocateheap.c"
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#define USBHOST_SRAM_BASE LPC17_SRAM_BANK1
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/* Debug ***********************************************************************/
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/* Trace error codes */
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#warning "To be provided"
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/* Trace interrupt codes */
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#warning "To be provided"
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/*******************************************************************************
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* Private Types
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*******************************************************************************/
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/* This structure retains the state of the USB host controller */
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struct lpc17_usbhost_s
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{
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/* Common device fields. This must be the first thing defined in the
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* structure so that it is possible to simply cast from struct usbhost_s
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* to structlpc17_usbhost_s.
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*/
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struct usbhost_driver_s usbhost;
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/* The bound device class driver */
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struct usbhost_class_s *class;
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};
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/* HostController EndPoint Descriptor */
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struct usbhost_hced_s
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{
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volatile uint32_t control; /* Endpoint descriptor control */
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volatile uint32_t tailtd; /* Physical address of tail in Transfer descriptor list */
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volatile uint32_t headtd; /* Physical address of head in Transfer descriptor list */
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volatile uint32_t hext; /* Physical address of next Endpoint descriptor */
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};
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/* HostController Transfer Descriptor */
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struct usbhost_hctd_s
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{
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volatile uint32_t control; /* Transfer descriptor control */
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volatile uint32_t currbufptr; /* Physical address of current buffer pointer */
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volatile uint32_t bext; /* Physical pointer to next Transfer Descriptor */
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volatile uint32_t bufend; /* Physical address of end of buffer */
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};
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/* Host Controller Communication Area */
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struct usbhost_hcca_s
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{
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volatile uint32_t inttable[32]; /* Interrupt table */
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volatile uint32_t framenumber; /* Frame number */
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volatile uint32_t donehead; /* Done head */
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volatile uint8_t reserved[116]; /* Reserved for future use */
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volatile uint8_t unknown[4]; /* Unused */
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};
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/* Helper definitions */
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#define Hcca = ((volatile struct usbhost_hcca_s *)(USBHOST_SRAM_BASE + 0x000))
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#define TDHead = ((volatile struct usbhost_hctd_s *)(USBHOST_SRAM_BASE + 0x100))
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#define TDTail = ((volatile struct usbhost_hctd_s *)(USBHOST_SRAM_BASE + 0x110))
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#define EDCtrl = ((volatile struct usbhost_hced_s *)(USBHOST_SRAM_BASE + 0x120))
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#define EDBulkIn = ((volatile struct usbhost_hced_s *)(USBHOST_SRAM_BASE + 0x130))
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#define EDBulkOut = ((volatile struct usbhost_hced_s *)(USBHOST_SRAM_BASE + 0x140))
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#define TDBuffer = ((volatile uint8_t *)(USBHOST_SRAM_BASE + 0x150))
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/*******************************************************************************
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* Private Function Prototypes
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*******************************************************************************/
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/* Register operations ********************************************************/
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#ifdef CONFIG_LPC17_USBHOST_REGDEBUG
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static void lpc17_printreg(uint32_t addr, uint32_t val, bool iswrite);
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static void lpc17_checkreg(uint32_t addr, uint32_t val, bool iswrite);
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static uint32_t lpc17_getreg(uint32_t addr);
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static void lpc17_putreg(uint32_t val, uint32_t addr);
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#else
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# define lpc17_getreg(addr) getreg32(addr)
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# define lpc17_putreg(val,addr) putreg32(val,addr)
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#endif
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/* Interrupt handling **********************************************************/
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static int lpc17_usbinterrupt(int irq, FAR void *context);
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/* USB host controller operations **********************************************/
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/*******************************************************************************
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* Private Data
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*******************************************************************************/
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/* Since there is only a single USB interface, all status information can be
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* be simply retained in a single global instance.
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*/
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static struct lpc17_usbhost_s g_usbhost;
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/*******************************************************************************
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* Public Data
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*******************************************************************************/
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/*******************************************************************************
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* Private Functions
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*******************************************************************************/
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/*******************************************************************************
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* Name: lpc17_printreg
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*
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* Description:
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* Print the contents of an LPC17xx register operation
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*
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*******************************************************************************/
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#ifdef CONFIG_LPC17_USBHOST_REGDEBUG
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static void lpc17_printreg(uint32_t addr, uint32_t val, bool iswrite)
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{
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lldbg("%08x%s%08x\n", addr, iswrite ? "<-" : "->", val);
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}
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#endif
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/*******************************************************************************
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* Name: lpc17_checkreg
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*
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* Description:
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* Get the contents of an LPC17xx register
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*
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*******************************************************************************/
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#ifdef CONFIG_LPC17_USBHOST_REGDEBUG
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static void lpc17_checkreg(uint32_t addr, uint32_t val, bool iswrite)
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{
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static uint32_t prevaddr = 0;
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static uint32_t preval = 0;
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static uint32_t count = 0;
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static bool prevwrite = false;
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/* Is this the same value that we read from/wrote to the same register last time?
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* Are we polling the register? If so, suppress the output.
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*/
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if (addr == prevaddr && val == preval && prevwrite == iswrite)
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{
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/* Yes.. Just increment the count */
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count++;
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}
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else
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{
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/* No this is a new address or value or operation. Were there any
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* duplicate accesses before this one?
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*/
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if (count > 0)
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{
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/* Yes.. Just one? */
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if (count == 1)
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{
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/* Yes.. Just one */
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lpc17_printreg(prevaddr, preval, prevwrite);
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}
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else
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{
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/* No.. More than one. */
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lldbg("[repeats %d more times]\n", count);
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}
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}
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/* Save the new address, value, count, and operation for next time */
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prevaddr = addr;
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preval = val;
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count = 0;
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prevwrite = iswrite;
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/* Show the new regisgter access */
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lpc17_printreg(addr, val, iswrite);
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}
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}
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#endif
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/*******************************************************************************
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* Name: lpc17_getreg
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*
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* Description:
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* Get the contents of an LPC17xx register
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*
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*******************************************************************************/
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#ifdef CONFIG_LPC17_USBHOST_REGDEBUG
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static uint32_t lpc17_getreg(uint32_t addr)
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{
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/* Read the value from the register */
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uint32_t val = getreg32(addr);
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/* Check if we need to print this value */
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lpc17_checkreg(addr, val, false);
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return val;
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}
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#endif
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/*******************************************************************************
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* Name: lpc17_putreg
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*
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* Description:
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* Set the contents of an LPC17xx register to a value
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*
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*******************************************************************************/
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#ifdef CONFIG_LPC17_USBHOST_REGDEBUG
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static void lpc17_putreg(uint32_t val, uint32_t addr)
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{
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/* Check if we need to print this value */
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lpc17_checkreg(addr, val, true);
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/* Write the value */
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putreg32(val, addr);
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}
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#endif
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/*******************************************************************************
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* Name: lpc17_usbinterrupt
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*
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* Description:
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* USB interrupt handler
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*
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*******************************************************************************/
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static int lpc17_usbinterrupt(int irq, FAR void *context)
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{
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struct lpc17_usbhost_s *priv = &g_usbhost;
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/* Read the device interrupt status register */
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usbtrace(TRACE_INTENTRY(LPC17_TRACEINTID_USB), 0xbeef);
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#warning "Not implemented"
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usbtrace(TRACE_INTEXIT(LPC17_TRACEINTID_USB), 0);
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return OK;
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}
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/*******************************************************************************
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* USB Host Device Operations
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*******************************************************************************/
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/*******************************************************************************
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* Public Functions
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*******************************************************************************/
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/*******************************************************************************
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* Name: up_usbhostinitialize
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*
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* Description:
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* Initialize USB host device controller hardware.
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*
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* Assumptions:
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* This function is called very early in the initialization sequence in order
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* to initialize the USB device functionality.
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*
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*******************************************************************************/
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void up_usbhostinitialize(void)
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{
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struct lpc17_usbhost_s *priv = &g_usbhost;
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uint32_t regval;
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irqstate_t flags;
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int i;
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usbtrace(TRACE_DEVINIT, 0);
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/* Enable power by setting PCUSB in the PCONP register */
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flags = irqsave();
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regval = lpc17_getreg(LPC17_SYSCON_PCONP);
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regval |= SYSCON_PCONP_PCUSB;
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lpc17_putreg(regval, LPC17_SYSCON_PCONP);
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/* Enable clocking on USB (USB PLL clocking was initialized in very low-
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* evel clock setup logic (see lpc17_clockconfig.c)). We do still need
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* to set up USBOTG CLKCTRL to enable clocking.
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*/
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lpc17_putreg(LPC17_CLKCTRL_ENABLES, LPC17_USBOTG_CLKCTRL);
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/* Then wait for the clocks to be reported as "ON" */
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do
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{
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regval = lpc17_getreg(LPC17_USBOTG_CLKST);
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||||
}
|
||||
while ((regval & LPC17_CLKCTRL_ENABLES) != LPC17_CLKCTRL_ENABLES);
|
||||
|
||||
lpc17_putreg(3, LPC17_USBOTG_STCTRL);
|
||||
|
||||
/* Step 3: Configure I/O pins */
|
||||
|
||||
usbhost_dumpgpio();
|
||||
lpc17_configgpio(GPIO_USB_DP); /* Positive differential data */
|
||||
lpc17_configgpio(GPIO_USB_DM); /* Negative differential data */
|
||||
lpc17_configgpio(GPIO_USB_UPLED); /* GoodLink LED control signal */
|
||||
lpc17_configgpio(GPIO_USB_PPWR); /* Port Power enable signal for USB port */
|
||||
lpc17_configgpio(GPIO_USB_PWRD); /* Power Status for USB port (host power switch) */
|
||||
lpc17_configgpio(GPIO_USB_OVRCR); /* USB port Over-Current status */
|
||||
usbhost_dumpgpio();
|
||||
|
||||
udbg("Initializing Host Stack\n");
|
||||
|
||||
/* Initialize all the TDs, EDs and HCCA to 0 */
|
||||
|
||||
usbhost_edinit(EDCtrl);
|
||||
usbhost_edinit(EDBulkIn);
|
||||
usbhost_edinit(EDBulkOut);
|
||||
usbhost_tdinit(TDHead);
|
||||
usbhost_tdinit(TDTail);
|
||||
usbhost_hccanit(Hcca);
|
||||
|
||||
/* Wait 50MS then perform hardware reset */
|
||||
|
||||
up_mdelay(50);
|
||||
|
||||
lpc17_putreg(0, LPC17_USBHOST_CTRL); /* Hardware reset */
|
||||
lpc17_putreg(0, LPC17_USBHOST_CTRLHEADED); /* Initialize control list head to Zero */
|
||||
lpc17_putreg(0, LPC17_USBHOST_BULKHEADED); /* Initialize bulk list head to Zero */
|
||||
|
||||
/* Software reset */
|
||||
|
||||
lpc17_putreg(OHCI_CMDST_HCR, LPC17_USBHOST_CMDST);
|
||||
|
||||
/* Write Fm interval and largest data packet counter */
|
||||
|
||||
lpc17_putreg(DEFAULT_FMINTERVAL, LPC17_USBHOST_FMINT);
|
||||
|
||||
/* Put HC in operational state */
|
||||
|
||||
regval = lpc17_getreg(LPC17_USBHOST_CTRL);
|
||||
regval &= ~OHCI_CTRL_HCFS_MASK;
|
||||
regval |= OHCI_CTRL_HCFS_OPER;
|
||||
lpc17_putreg(regval, LPC17_USBHOST_CTRL);
|
||||
|
||||
/* Set HCCA base address */
|
||||
|
||||
lpc17_putreg((uint32_t)Hcca, LPC17_USBHOST_HCCA);
|
||||
|
||||
/* Clear pending interrupts */
|
||||
|
||||
regval = lpc17_getreg(LPC17_USBHOST_INTST);
|
||||
lpc17_putreg(revgval, LPC17_USBHOST_INTST);
|
||||
|
||||
/* Enable OHCI interrupts */
|
||||
|
||||
lpc17_putreg((OHCI_INT_MIE | OHCI_INT_WDH | OHCI_INT_RHSC), LPC17_USBHOST_INTEN);
|
||||
|
||||
/* Attach USB host controller interrupt handler */
|
||||
|
||||
if (irq_attach(LPC17_IRQ_USB, lpc17_usbinterrupt) != 0)
|
||||
{
|
||||
usbtrace(TRACE_DEVERROR(LPC17_TRACEERR_IRQREGISTRATION),
|
||||
(uint16_t)LPC17_IRQ_USB);
|
||||
return;
|
||||
}
|
||||
|
||||
/* Enable USB interrupts at the SYCON controller */
|
||||
|
||||
flags = irqsave();
|
||||
regval = lpc17_getreg(LPC17_SYSCON_USBINTST);
|
||||
regval |= SYSCON_USBINTST_ENINTS;
|
||||
lpc17_putreg(regval, LPC17_SYSCON_USBINTST);
|
||||
irqrestore(flags);
|
||||
|
||||
/* Enable interrupts at the interrupt controller */
|
||||
|
||||
up_enable_irq(LPC17_IRQ_USB); /* enable USB interrupt */
|
||||
udbg("USB host Initialized\n");
|
||||
}
|
||||
@ -1,5 +1,5 @@
|
||||
/****************************************************************************
|
||||
* include/nuttx/ohci.h
|
||||
* include/nuttx/usb/ohci.h
|
||||
*
|
||||
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
@ -37,8 +37,8 @@
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __INCLUDE_NUTTX_OHCI_H
|
||||
#define __INCLUDE_NUTTX_OHCI_H
|
||||
#ifndef __INCLUDE_NUTTX_USB_OHCI_H
|
||||
#define __INCLUDE_NUTTX_USB_OHCI_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
@ -427,4 +427,4 @@ extern "C" {
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __INCLUDE_NUTTX_OHCI_H */
|
||||
#endif /* __INCLUDE_NUTTX_USB_OHCI_H */
|
||||
Loading…
Reference in New Issue
Block a user