upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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958 lines
21 KiB
958 lines
21 KiB
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2009 Wind River Systems, Inc.
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* Tom Rix <Tom.Rix@windriver.com>
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*
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* This file is a rewrite of the usb device part of
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* repository git.omapzoom.org/repo/u-boot.git, branch master,
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* file cpu/omap3/fastboot.c
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*
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* This is the unique part of its copyright :
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*
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* -------------------------------------------------------------------------
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*
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* (C) Copyright 2008 - 2009
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* Windriver, <www.windriver.com>
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* Tom Rix <Tom.Rix@windriver.com>
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*
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* -------------------------------------------------------------------------
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*
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* The details of connecting the device to the uboot usb device subsystem
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* came from the old omap3 repository www.sakoman.net/u-boot-omap3.git,
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* branch omap3-dev-usb, file drivers/usb/usbdcore_musb.c
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*
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* This is the unique part of its copyright :
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*
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* -------------------------------------------------------------------------
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*
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* (C) Copyright 2008 Texas Instruments Incorporated.
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*
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* Based on
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* u-boot OMAP1510 USB drivers (drivers/usbdcore_omap1510.c)
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* twl4030 init based on linux (drivers/i2c/chips/twl4030_usb.c)
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*
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* Author: Diego Dompe (diego.dompe@ridgerun.com)
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* Atin Malaviya (atin.malaviya@gmail.com)
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*
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* -------------------------------------------------------------------------
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*/
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#include <common.h>
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#include <usbdevice.h>
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#include <usb/udc.h>
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#include "../gadget/ep0.h"
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#include "musb_core.h"
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#if defined(CONFIG_USB_OMAP3)
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#include "omap3.h"
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#elif defined(CONFIG_USB_AM35X)
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#include "am35x.h"
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#elif defined(CONFIG_USB_DAVINCI)
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#include "davinci.h"
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#endif
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/* Define MUSB_DEBUG for debugging */
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/* #define MUSB_DEBUG */
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#include "musb_debug.h"
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#define MAX_ENDPOINT 15
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#define GET_ENDPOINT(dev,ep) \
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(((struct usb_device_instance *)(dev))->bus->endpoint_array + ep)
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#define SET_EP0_STATE(s) \
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do { \
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if ((0 <= (s)) && (SET_ADDRESS >= (s))) { \
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if ((s) != ep0_state) { \
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if ((debug_setup) && (debug_level > 1)) \
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serial_printf("INFO : Changing state " \
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"from %s to %s in %s at " \
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"line %d\n", \
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ep0_state_strings[ep0_state],\
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ep0_state_strings[s], \
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__PRETTY_FUNCTION__, \
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__LINE__); \
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ep0_state = s; \
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} \
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} else { \
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if (debug_level > 0) \
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serial_printf("Error at %s %d with setting " \
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"state %d is invalid\n", \
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__PRETTY_FUNCTION__, __LINE__, s); \
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} \
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} while (0)
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/* static implies these initialized to 0 or NULL */
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static int debug_setup;
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static int debug_level;
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static struct musb_epinfo epinfo[MAX_ENDPOINT * 2 + 2];
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static enum ep0_state_enum {
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IDLE = 0,
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TX,
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RX,
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SET_ADDRESS
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} ep0_state = IDLE;
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static char *ep0_state_strings[4] = {
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"IDLE",
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"TX",
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"RX",
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"SET_ADDRESS",
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};
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static struct urb *ep0_urb;
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struct usb_endpoint_instance *ep0_endpoint;
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static struct usb_device_instance *udc_device;
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static int enabled;
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#ifdef MUSB_DEBUG
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static void musb_db_regs(void)
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{
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u8 b;
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u16 w;
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b = readb(&musbr->faddr);
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serial_printf("\tfaddr 0x%2.2x\n", b);
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b = readb(&musbr->power);
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musb_print_pwr(b);
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w = readw(&musbr->ep[0].ep0.csr0);
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musb_print_csr0(w);
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b = readb(&musbr->devctl);
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musb_print_devctl(b);
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b = readb(&musbr->ep[0].ep0.configdata);
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musb_print_config(b);
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w = readw(&musbr->frame);
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serial_printf("\tframe 0x%4.4x\n", w);
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b = readb(&musbr->index);
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serial_printf("\tindex 0x%2.2x\n", b);
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w = readw(&musbr->ep[1].epN.rxmaxp);
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musb_print_rxmaxp(w);
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w = readw(&musbr->ep[1].epN.rxcsr);
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musb_print_rxcsr(w);
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w = readw(&musbr->ep[1].epN.txmaxp);
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musb_print_txmaxp(w);
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w = readw(&musbr->ep[1].epN.txcsr);
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musb_print_txcsr(w);
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}
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#else
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#define musb_db_regs()
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#endif /* DEBUG_MUSB */
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static void musb_peri_softconnect(void)
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{
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u8 power, devctl;
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/* Power off MUSB */
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power = readb(&musbr->power);
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power &= ~MUSB_POWER_SOFTCONN;
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writeb(power, &musbr->power);
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/* Read intr to clear */
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readb(&musbr->intrusb);
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readw(&musbr->intrrx);
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readw(&musbr->intrtx);
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udelay(1000 * 1000); /* 1 sec */
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/* Power on MUSB */
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power = readb(&musbr->power);
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power |= MUSB_POWER_SOFTCONN;
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/*
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* The usb device interface is usb 1.1
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* Disable 2.0 high speed by clearring the hsenable bit.
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*/
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power &= ~MUSB_POWER_HSENAB;
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writeb(power, &musbr->power);
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/* Check if device is in b-peripheral mode */
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devctl = readb(&musbr->devctl);
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if (!(devctl & MUSB_DEVCTL_BDEVICE) ||
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(devctl & MUSB_DEVCTL_HM)) {
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serial_printf("ERROR : Unsupport USB mode\n");
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serial_printf("Check that mini-B USB cable is attached "
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"to the device\n");
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}
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if (debug_setup && (debug_level > 1))
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musb_db_regs();
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}
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static void musb_peri_reset(void)
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{
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if ((debug_setup) && (debug_level > 1))
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serial_printf("INFO : %s reset\n", __PRETTY_FUNCTION__);
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if (ep0_endpoint)
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ep0_endpoint->endpoint_address = 0xff;
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/* Sync sw and hw addresses */
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writeb(udc_device->address, &musbr->faddr);
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SET_EP0_STATE(IDLE);
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}
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static void musb_peri_resume(void)
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{
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/* noop */
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}
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static void musb_peri_ep0_stall(void)
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{
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u16 csr0;
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csr0 = readw(&musbr->ep[0].ep0.csr0);
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csr0 |= MUSB_CSR0_P_SENDSTALL;
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writew(csr0, &musbr->ep[0].ep0.csr0);
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if ((debug_setup) && (debug_level > 1))
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serial_printf("INFO : %s stall\n", __PRETTY_FUNCTION__);
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}
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static void musb_peri_ep0_ack_req(void)
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{
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u16 csr0;
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csr0 = readw(&musbr->ep[0].ep0.csr0);
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csr0 |= MUSB_CSR0_P_SVDRXPKTRDY;
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writew(csr0, &musbr->ep[0].ep0.csr0);
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}
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static void musb_ep0_tx_ready(void)
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{
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u16 csr0;
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csr0 = readw(&musbr->ep[0].ep0.csr0);
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csr0 |= MUSB_CSR0_TXPKTRDY;
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writew(csr0, &musbr->ep[0].ep0.csr0);
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}
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static void musb_ep0_tx_ready_and_last(void)
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{
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u16 csr0;
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csr0 = readw(&musbr->ep[0].ep0.csr0);
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csr0 |= (MUSB_CSR0_TXPKTRDY | MUSB_CSR0_P_DATAEND);
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writew(csr0, &musbr->ep[0].ep0.csr0);
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}
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static void musb_peri_ep0_last(void)
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{
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u16 csr0;
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csr0 = readw(&musbr->ep[0].ep0.csr0);
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csr0 |= MUSB_CSR0_P_DATAEND;
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writew(csr0, &musbr->ep[0].ep0.csr0);
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}
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static void musb_peri_ep0_set_address(void)
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{
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u8 faddr;
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writeb(udc_device->address, &musbr->faddr);
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/* Verify */
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faddr = readb(&musbr->faddr);
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if (udc_device->address == faddr) {
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SET_EP0_STATE(IDLE);
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usbd_device_event_irq(udc_device, DEVICE_ADDRESS_ASSIGNED, 0);
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if ((debug_setup) && (debug_level > 1))
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serial_printf("INFO : %s Address set to %d\n",
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__PRETTY_FUNCTION__, udc_device->address);
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} else {
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if (debug_level > 0)
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serial_printf("ERROR : %s Address missmatch "
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"sw %d vs hw %d\n",
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__PRETTY_FUNCTION__,
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udc_device->address, faddr);
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}
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}
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static void musb_peri_rx_ack(unsigned int ep)
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{
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u16 peri_rxcsr;
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peri_rxcsr = readw(&musbr->ep[ep].epN.rxcsr);
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peri_rxcsr &= ~MUSB_RXCSR_RXPKTRDY;
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writew(peri_rxcsr, &musbr->ep[ep].epN.rxcsr);
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}
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static void musb_peri_tx_ready(unsigned int ep)
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{
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u16 peri_txcsr;
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peri_txcsr = readw(&musbr->ep[ep].epN.txcsr);
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peri_txcsr |= MUSB_TXCSR_TXPKTRDY;
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writew(peri_txcsr, &musbr->ep[ep].epN.txcsr);
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}
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static void musb_peri_ep0_zero_data_request(int err)
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{
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musb_peri_ep0_ack_req();
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if (err) {
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musb_peri_ep0_stall();
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SET_EP0_STATE(IDLE);
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} else {
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musb_peri_ep0_last();
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/* USBD state */
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switch (ep0_urb->device_request.bRequest) {
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case USB_REQ_SET_ADDRESS:
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if ((debug_setup) && (debug_level > 1))
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serial_printf("INFO : %s received set "
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"address\n", __PRETTY_FUNCTION__);
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break;
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case USB_REQ_SET_CONFIGURATION:
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if ((debug_setup) && (debug_level > 1))
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serial_printf("INFO : %s Configured\n",
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__PRETTY_FUNCTION__);
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usbd_device_event_irq(udc_device, DEVICE_CONFIGURED, 0);
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break;
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}
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/* EP0 state */
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if (USB_REQ_SET_ADDRESS == ep0_urb->device_request.bRequest) {
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SET_EP0_STATE(SET_ADDRESS);
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} else {
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SET_EP0_STATE(IDLE);
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}
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}
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}
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static void musb_peri_ep0_rx_data_request(void)
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{
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/*
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* This is the completion of the data OUT / RX
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*
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* Host is sending data to ep0 that is not
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* part of setup. This comes from the cdc_recv_setup
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* op that is device specific.
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*
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*/
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musb_peri_ep0_ack_req();
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ep0_endpoint->rcv_urb = ep0_urb;
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ep0_urb->actual_length = 0;
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SET_EP0_STATE(RX);
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}
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static void musb_peri_ep0_tx_data_request(int err)
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{
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if (err) {
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musb_peri_ep0_stall();
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SET_EP0_STATE(IDLE);
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} else {
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musb_peri_ep0_ack_req();
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ep0_endpoint->tx_urb = ep0_urb;
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ep0_endpoint->sent = 0;
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SET_EP0_STATE(TX);
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}
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}
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static void musb_peri_ep0_idle(void)
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{
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u16 count0;
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int err;
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u16 csr0;
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/*
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* Verify addresses
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* A lot of confusion can be caused if the address
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* in software, udc layer, does not agree with the
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* hardware. Since the setting of the hardware address
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* must be set after the set address request, the
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* usb state machine is out of sync for a few frame.
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* It is a good idea to run this check when changes
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* are made to the state machine.
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*/
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if ((debug_level > 0) &&
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(ep0_state != SET_ADDRESS)) {
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u8 faddr;
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faddr = readb(&musbr->faddr);
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if (udc_device->address != faddr) {
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serial_printf("ERROR : %s addresses do not"
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"match sw %d vs hw %d\n",
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__PRETTY_FUNCTION__,
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udc_device->address, faddr);
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udelay(1000 * 1000);
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hang();
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}
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}
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csr0 = readw(&musbr->ep[0].ep0.csr0);
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if (!(MUSB_CSR0_RXPKTRDY & csr0))
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goto end;
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count0 = readw(&musbr->ep[0].ep0.count0);
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if (count0 == 0)
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goto end;
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if (count0 != 8) {
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if ((debug_setup) && (debug_level > 1))
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serial_printf("WARN : %s SETUP incorrect size %d\n",
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__PRETTY_FUNCTION__, count0);
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musb_peri_ep0_stall();
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goto end;
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}
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read_fifo(0, count0, &ep0_urb->device_request);
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if (debug_level > 2)
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print_usb_device_request(&ep0_urb->device_request);
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if (ep0_urb->device_request.wLength == 0) {
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err = ep0_recv_setup(ep0_urb);
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/* Zero data request */
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musb_peri_ep0_zero_data_request(err);
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} else {
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/* Is data coming or going ? */
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u8 reqType = ep0_urb->device_request.bmRequestType;
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if (USB_REQ_DEVICE2HOST == (reqType & USB_REQ_DIRECTION_MASK)) {
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err = ep0_recv_setup(ep0_urb);
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/* Device to host */
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musb_peri_ep0_tx_data_request(err);
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} else {
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/*
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* Host to device
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*
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* The RX routine will call ep0_recv_setup
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* when the data packet has arrived.
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*/
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musb_peri_ep0_rx_data_request();
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}
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}
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end:
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return;
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}
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static void musb_peri_ep0_rx(void)
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{
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/*
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* This is the completion of the data OUT / RX
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*
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* Host is sending data to ep0 that is not
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* part of setup. This comes from the cdc_recv_setup
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* op that is device specific.
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*
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* Pass the data back to driver ep0_recv_setup which
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* should give the cdc_recv_setup the chance to handle
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* the rx
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*/
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u16 csr0;
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u16 count0;
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if (debug_level > 3) {
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if (0 != ep0_urb->actual_length) {
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serial_printf("%s finished ? %d of %d\n",
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__PRETTY_FUNCTION__,
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ep0_urb->actual_length,
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ep0_urb->device_request.wLength);
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}
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}
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if (ep0_urb->device_request.wLength == ep0_urb->actual_length) {
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musb_peri_ep0_last();
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SET_EP0_STATE(IDLE);
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ep0_recv_setup(ep0_urb);
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return;
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}
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csr0 = readw(&musbr->ep[0].ep0.csr0);
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if (!(MUSB_CSR0_RXPKTRDY & csr0))
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return;
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count0 = readw(&musbr->ep[0].ep0.count0);
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if (count0) {
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struct usb_endpoint_instance *endpoint;
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u32 length;
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u8 *data;
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endpoint = ep0_endpoint;
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if (endpoint && endpoint->rcv_urb) {
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struct urb *urb = endpoint->rcv_urb;
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unsigned int remaining_space = urb->buffer_length -
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urb->actual_length;
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if (remaining_space) {
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int urb_bad = 0; /* urb is good */
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if (count0 > remaining_space)
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length = remaining_space;
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else
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length = count0;
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data = (u8 *) urb->buffer_data;
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data += urb->actual_length;
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/* The common musb fifo reader */
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read_fifo(0, length, data);
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musb_peri_ep0_ack_req();
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/*
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* urb's actual_length is updated in
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* usbd_rcv_complete
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*/
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usbd_rcv_complete(endpoint, length, urb_bad);
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} else {
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if (debug_level > 0)
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serial_printf("ERROR : %s no space in "
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"rcv buffer\n",
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__PRETTY_FUNCTION__);
|
|
}
|
|
} else {
|
|
if (debug_level > 0)
|
|
serial_printf("ERROR : %s problem with "
|
|
"endpoint\n",
|
|
__PRETTY_FUNCTION__);
|
|
}
|
|
} else {
|
|
if (debug_level > 0)
|
|
serial_printf("ERROR : %s with nothing to do\n",
|
|
__PRETTY_FUNCTION__);
|
|
}
|
|
}
|
|
|
|
static void musb_peri_ep0_tx(void)
|
|
{
|
|
u16 csr0;
|
|
int transfer_size = 0;
|
|
unsigned int p, pm;
|
|
|
|
csr0 = readw(&musbr->ep[0].ep0.csr0);
|
|
|
|
/* Check for pending tx */
|
|
if (csr0 & MUSB_CSR0_TXPKTRDY)
|
|
goto end;
|
|
|
|
/* Check if this is the last packet sent */
|
|
if (ep0_endpoint->sent >= ep0_urb->actual_length) {
|
|
SET_EP0_STATE(IDLE);
|
|
goto end;
|
|
}
|
|
|
|
transfer_size = ep0_urb->actual_length - ep0_endpoint->sent;
|
|
/* Is the transfer size negative ? */
|
|
if (transfer_size <= 0) {
|
|
if (debug_level > 0)
|
|
serial_printf("ERROR : %s problem with the"
|
|
" transfer size %d\n",
|
|
__PRETTY_FUNCTION__,
|
|
transfer_size);
|
|
SET_EP0_STATE(IDLE);
|
|
goto end;
|
|
}
|
|
|
|
/* Truncate large transfers to the fifo size */
|
|
if (transfer_size > ep0_endpoint->tx_packetSize)
|
|
transfer_size = ep0_endpoint->tx_packetSize;
|
|
|
|
write_fifo(0, transfer_size, &ep0_urb->buffer[ep0_endpoint->sent]);
|
|
ep0_endpoint->sent += transfer_size;
|
|
|
|
/* Done or more to send ? */
|
|
if (ep0_endpoint->sent >= ep0_urb->actual_length)
|
|
musb_ep0_tx_ready_and_last();
|
|
else
|
|
musb_ep0_tx_ready();
|
|
|
|
/* Wait a bit */
|
|
pm = 10;
|
|
for (p = 0; p < pm; p++) {
|
|
csr0 = readw(&musbr->ep[0].ep0.csr0);
|
|
if (!(csr0 & MUSB_CSR0_TXPKTRDY))
|
|
break;
|
|
|
|
/* Double the delay. */
|
|
udelay(1 << pm);
|
|
}
|
|
|
|
if ((ep0_endpoint->sent >= ep0_urb->actual_length) && (p < pm))
|
|
SET_EP0_STATE(IDLE);
|
|
|
|
end:
|
|
return;
|
|
}
|
|
|
|
static void musb_peri_ep0(void)
|
|
{
|
|
u16 csr0;
|
|
|
|
if (SET_ADDRESS == ep0_state)
|
|
return;
|
|
|
|
csr0 = readw(&musbr->ep[0].ep0.csr0);
|
|
|
|
/* Error conditions */
|
|
if (MUSB_CSR0_P_SENTSTALL & csr0) {
|
|
csr0 &= ~MUSB_CSR0_P_SENTSTALL;
|
|
writew(csr0, &musbr->ep[0].ep0.csr0);
|
|
SET_EP0_STATE(IDLE);
|
|
}
|
|
if (MUSB_CSR0_P_SETUPEND & csr0) {
|
|
csr0 |= MUSB_CSR0_P_SVDSETUPEND;
|
|
writew(csr0, &musbr->ep[0].ep0.csr0);
|
|
SET_EP0_STATE(IDLE);
|
|
if ((debug_setup) && (debug_level > 1))
|
|
serial_printf("WARN: %s SETUPEND\n",
|
|
__PRETTY_FUNCTION__);
|
|
}
|
|
|
|
/* Normal states */
|
|
if (IDLE == ep0_state)
|
|
musb_peri_ep0_idle();
|
|
|
|
if (TX == ep0_state)
|
|
musb_peri_ep0_tx();
|
|
|
|
if (RX == ep0_state)
|
|
musb_peri_ep0_rx();
|
|
}
|
|
|
|
static void musb_peri_rx_ep(unsigned int ep)
|
|
{
|
|
u16 peri_rxcount;
|
|
u8 peri_rxcsr = readw(&musbr->ep[ep].epN.rxcsr);
|
|
|
|
if (!(peri_rxcsr & MUSB_RXCSR_RXPKTRDY)) {
|
|
if (debug_level > 0)
|
|
serial_printf("ERROR : %s %d without MUSB_RXCSR_RXPKTRDY set\n",
|
|
__PRETTY_FUNCTION__, ep);
|
|
return;
|
|
}
|
|
|
|
peri_rxcount = readw(&musbr->ep[ep].epN.rxcount);
|
|
if (peri_rxcount) {
|
|
struct usb_endpoint_instance *endpoint;
|
|
u32 length;
|
|
u8 *data;
|
|
|
|
endpoint = GET_ENDPOINT(udc_device, ep);
|
|
if (endpoint && endpoint->rcv_urb) {
|
|
struct urb *urb = endpoint->rcv_urb;
|
|
unsigned int remaining_space = urb->buffer_length -
|
|
urb->actual_length;
|
|
|
|
if (remaining_space) {
|
|
int urb_bad = 0; /* urb is good */
|
|
|
|
if (peri_rxcount > remaining_space)
|
|
length = remaining_space;
|
|
else
|
|
length = peri_rxcount;
|
|
|
|
data = (u8 *) urb->buffer_data;
|
|
data += urb->actual_length;
|
|
|
|
/* The common musb fifo reader */
|
|
read_fifo(ep, length, data);
|
|
|
|
musb_peri_rx_ack(ep);
|
|
|
|
/*
|
|
* urb's actual_length is updated in
|
|
* usbd_rcv_complete
|
|
*/
|
|
usbd_rcv_complete(endpoint, length, urb_bad);
|
|
|
|
} else {
|
|
if (debug_level > 0)
|
|
serial_printf("ERROR : %s %d no space "
|
|
"in rcv buffer\n",
|
|
__PRETTY_FUNCTION__, ep);
|
|
}
|
|
} else {
|
|
if (debug_level > 0)
|
|
serial_printf("ERROR : %s %d problem with "
|
|
"endpoint\n",
|
|
__PRETTY_FUNCTION__, ep);
|
|
}
|
|
|
|
} else {
|
|
if (debug_level > 0)
|
|
serial_printf("ERROR : %s %d with nothing to do\n",
|
|
__PRETTY_FUNCTION__, ep);
|
|
}
|
|
}
|
|
|
|
static void musb_peri_rx(u16 intr)
|
|
{
|
|
unsigned int ep;
|
|
|
|
/* Check for EP0 */
|
|
if (0x01 & intr)
|
|
musb_peri_ep0();
|
|
|
|
for (ep = 1; ep < 16; ep++) {
|
|
if ((1 << ep) & intr)
|
|
musb_peri_rx_ep(ep);
|
|
}
|
|
}
|
|
|
|
static void musb_peri_tx(u16 intr)
|
|
{
|
|
/* Check for EP0 */
|
|
if (0x01 & intr)
|
|
musb_peri_ep0_tx();
|
|
|
|
/*
|
|
* Use this in the future when handling epN tx
|
|
*
|
|
* u8 ep;
|
|
*
|
|
* for (ep = 1; ep < 16; ep++) {
|
|
* if ((1 << ep) & intr) {
|
|
* / * handle tx for this endpoint * /
|
|
* }
|
|
* }
|
|
*/
|
|
}
|
|
|
|
void udc_irq(void)
|
|
{
|
|
/* This is a high freq called function */
|
|
if (enabled) {
|
|
u8 intrusb;
|
|
|
|
intrusb = readb(&musbr->intrusb);
|
|
|
|
/*
|
|
* See drivers/usb/gadget/mpc8xx_udc.c for
|
|
* state diagram going from detached through
|
|
* configuration.
|
|
*/
|
|
if (MUSB_INTR_RESUME & intrusb) {
|
|
usbd_device_event_irq(udc_device,
|
|
DEVICE_BUS_ACTIVITY, 0);
|
|
musb_peri_resume();
|
|
}
|
|
|
|
musb_peri_ep0();
|
|
|
|
if (MUSB_INTR_RESET & intrusb) {
|
|
usbd_device_event_irq(udc_device, DEVICE_RESET, 0);
|
|
musb_peri_reset();
|
|
}
|
|
|
|
if (MUSB_INTR_DISCONNECT & intrusb) {
|
|
/* cable unplugged from hub/host */
|
|
usbd_device_event_irq(udc_device, DEVICE_RESET, 0);
|
|
musb_peri_reset();
|
|
usbd_device_event_irq(udc_device, DEVICE_HUB_RESET, 0);
|
|
}
|
|
|
|
if (MUSB_INTR_SOF & intrusb) {
|
|
usbd_device_event_irq(udc_device,
|
|
DEVICE_BUS_ACTIVITY, 0);
|
|
musb_peri_resume();
|
|
}
|
|
|
|
if (MUSB_INTR_SUSPEND & intrusb) {
|
|
usbd_device_event_irq(udc_device,
|
|
DEVICE_BUS_INACTIVE, 0);
|
|
}
|
|
|
|
if (ep0_state != SET_ADDRESS) {
|
|
u16 intrrx, intrtx;
|
|
|
|
intrrx = readw(&musbr->intrrx);
|
|
intrtx = readw(&musbr->intrtx);
|
|
|
|
if (intrrx)
|
|
musb_peri_rx(intrrx);
|
|
|
|
if (intrtx)
|
|
musb_peri_tx(intrtx);
|
|
} else {
|
|
if (MUSB_INTR_SOF & intrusb) {
|
|
u8 faddr;
|
|
faddr = readb(&musbr->faddr);
|
|
/*
|
|
* Setting of the address can fail.
|
|
* Normally it succeeds the second time.
|
|
*/
|
|
if (udc_device->address != faddr)
|
|
musb_peri_ep0_set_address();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void udc_set_nak(int ep_num)
|
|
{
|
|
/* noop */
|
|
}
|
|
|
|
void udc_unset_nak(int ep_num)
|
|
{
|
|
/* noop */
|
|
}
|
|
|
|
int udc_endpoint_write(struct usb_endpoint_instance *endpoint)
|
|
{
|
|
int ret = 0;
|
|
|
|
/* Transmit only if the hardware is available */
|
|
if (endpoint->tx_urb && endpoint->state == 0) {
|
|
unsigned int ep = endpoint->endpoint_address &
|
|
USB_ENDPOINT_NUMBER_MASK;
|
|
|
|
u16 peri_txcsr = readw(&musbr->ep[ep].epN.txcsr);
|
|
|
|
/* Error conditions */
|
|
if (peri_txcsr & MUSB_TXCSR_P_UNDERRUN) {
|
|
peri_txcsr &= ~MUSB_TXCSR_P_UNDERRUN;
|
|
writew(peri_txcsr, &musbr->ep[ep].epN.txcsr);
|
|
}
|
|
|
|
if (debug_level > 1)
|
|
musb_print_txcsr(peri_txcsr);
|
|
|
|
/* Check if a packet is waiting to be sent */
|
|
if (!(peri_txcsr & MUSB_TXCSR_TXPKTRDY)) {
|
|
u32 length;
|
|
u8 *data;
|
|
struct urb *urb = endpoint->tx_urb;
|
|
unsigned int remaining_packet = urb->actual_length -
|
|
endpoint->sent;
|
|
|
|
if (endpoint->tx_packetSize < remaining_packet)
|
|
length = endpoint->tx_packetSize;
|
|
else
|
|
length = remaining_packet;
|
|
|
|
data = (u8 *) urb->buffer;
|
|
data += endpoint->sent;
|
|
|
|
/* common musb fifo function */
|
|
write_fifo(ep, length, data);
|
|
|
|
musb_peri_tx_ready(ep);
|
|
|
|
endpoint->last = length;
|
|
/* usbd_tx_complete will take care of updating 'sent' */
|
|
usbd_tx_complete(endpoint);
|
|
}
|
|
} else {
|
|
if (debug_level > 0)
|
|
serial_printf("ERROR : %s Problem with urb %p "
|
|
"or ep state %d\n",
|
|
__PRETTY_FUNCTION__,
|
|
endpoint->tx_urb, endpoint->state);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void udc_setup_ep(struct usb_device_instance *device, unsigned int id,
|
|
struct usb_endpoint_instance *endpoint)
|
|
{
|
|
if (0 == id) {
|
|
/* EP0 */
|
|
ep0_endpoint = endpoint;
|
|
ep0_endpoint->endpoint_address = 0xff;
|
|
ep0_urb = usbd_alloc_urb(device, endpoint);
|
|
} else if (MAX_ENDPOINT >= id) {
|
|
int ep_addr;
|
|
|
|
/* Check the direction */
|
|
ep_addr = endpoint->endpoint_address;
|
|
if (USB_DIR_IN == (ep_addr & USB_ENDPOINT_DIR_MASK)) {
|
|
/* IN */
|
|
epinfo[(id * 2) + 1].epsize = endpoint->tx_packetSize;
|
|
} else {
|
|
/* OUT */
|
|
epinfo[id * 2].epsize = endpoint->rcv_packetSize;
|
|
}
|
|
|
|
musb_configure_ep(&epinfo[0], ARRAY_SIZE(epinfo));
|
|
} else {
|
|
if (debug_level > 0)
|
|
serial_printf("ERROR : %s endpoint request %d "
|
|
"exceeds maximum %d\n",
|
|
__PRETTY_FUNCTION__, id, MAX_ENDPOINT);
|
|
}
|
|
}
|
|
|
|
void udc_connect(void)
|
|
{
|
|
/* noop */
|
|
}
|
|
|
|
void udc_disconnect(void)
|
|
{
|
|
/* noop */
|
|
}
|
|
|
|
void udc_enable(struct usb_device_instance *device)
|
|
{
|
|
/* Save the device structure pointer */
|
|
udc_device = device;
|
|
|
|
enabled = 1;
|
|
}
|
|
|
|
void udc_disable(void)
|
|
{
|
|
enabled = 0;
|
|
}
|
|
|
|
void udc_startup_events(struct usb_device_instance *device)
|
|
{
|
|
/* The DEVICE_INIT event puts the USB device in the state STATE_INIT. */
|
|
usbd_device_event_irq(device, DEVICE_INIT, 0);
|
|
|
|
/*
|
|
* The DEVICE_CREATE event puts the USB device in the state
|
|
* STATE_ATTACHED.
|
|
*/
|
|
usbd_device_event_irq(device, DEVICE_CREATE, 0);
|
|
|
|
/* Resets the address to 0 */
|
|
usbd_device_event_irq(device, DEVICE_RESET, 0);
|
|
|
|
udc_enable(device);
|
|
}
|
|
|
|
int udc_init(void)
|
|
{
|
|
int ret;
|
|
int ep_loop;
|
|
|
|
ret = musb_platform_init();
|
|
if (ret < 0)
|
|
goto end;
|
|
|
|
/* Configure all the endpoint FIFO's and start usb controller */
|
|
musbr = musb_cfg.regs;
|
|
|
|
/* Initialize the endpoints */
|
|
for (ep_loop = 0; ep_loop <= MAX_ENDPOINT * 2; ep_loop++) {
|
|
epinfo[ep_loop].epnum = (ep_loop / 2) + 1;
|
|
epinfo[ep_loop].epdir = ep_loop % 2; /* OUT, IN */
|
|
epinfo[ep_loop].epsize = 0;
|
|
}
|
|
|
|
musb_peri_softconnect();
|
|
|
|
ret = 0;
|
|
end:
|
|
|
|
return ret;
|
|
}
|
|
|