mirror of
https://github.com/AsahiLinux/u-boot
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53677ef18e
This commit gets rid of a huge amount of silly white-space issues. Especially, all sequences of SPACEs followed by TAB characters get removed (unless they appear in print statements). Also remove all embedded "vim:" and "vi:" statements which hide indentation problems. Signed-off-by: Wolfgang Denk <wd@denx.de>
1445 lines
36 KiB
C
1445 lines
36 KiB
C
/*
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* ISP116x HCD (Host Controller Driver) for u-boot.
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*
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* Copyright (C) 2006-2007 Rodolfo Giometti <giometti@linux.it>
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* Copyright (C) 2006-2007 Eurotech S.p.A. <info@eurotech.it>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Derived in part from the SL811 HCD driver "u-boot/drivers/usb/sl811_usb.c"
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* (original copyright message follows):
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*
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* (C) Copyright 2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* This code is based on linux driver for sl811hs chip, source at
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* drivers/usb/host/sl811.c:
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*
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* SL811 Host Controller Interface driver for USB.
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*
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* Copyright (c) 2003/06, Courage Co., Ltd.
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*
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* Based on:
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* 1.uhci.c by Linus Torvalds, Johannes Erdfelt, Randy Dunlap,
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* Georg Acher, Deti Fliegl, Thomas Sailer, Roman Weissgaerber,
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* Adam Richter, Gregory P. Smith;
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* 2.Original SL811 driver (hc_sl811.o) by Pei Liu <pbl@cypress.com>
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* 3.Rewrited as sl811.o by Yin Aihua <yinah:couragetech.com.cn>
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*
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* [[GNU/GPL disclaimer]]
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*
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* and in part from AU1x00 OHCI HCD driver "u-boot/cpu/mips/au1x00_usb_ohci.c"
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* (original copyright message follows):
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*
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* URB OHCI HCD (Host Controller Driver) for USB on the AU1x00.
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*
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* (C) Copyright 2003
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* Gary Jennejohn, DENX Software Engineering <gj@denx.de>
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*
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* [[GNU/GPL disclaimer]]
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*
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* Note: Part of this code has been derived from linux
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*/
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#include <common.h>
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#ifdef CONFIG_USB_ISP116X_HCD
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#include <asm/io.h>
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#include <usb.h>
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#include <malloc.h>
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#include <linux/list.h>
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/*
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* ISP116x chips require certain delays between accesses to its
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* registers. The following timing options exist.
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*
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* 1. Configure your memory controller (the best)
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* 2. Use ndelay (easiest, poorest). For that, enable the following macro.
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*
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* Value is in microseconds.
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*/
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#ifdef ISP116X_HCD_USE_UDELAY
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#define UDELAY 1
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#endif
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/*
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* On some (slowly?) machines an extra delay after data packing into
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* controller's FIFOs is required, * otherwise you may get the following
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* error:
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*
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* uboot> usb start
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* (Re)start USB...
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* USB: scanning bus for devices... isp116x: isp116x_submit_job: CTL:TIMEOUT
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* isp116x: isp116x_submit_job: ****** FIFO not ready! ******
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*
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* USB device not responding, giving up (status=4)
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* isp116x: isp116x_submit_job: ****** FIFO not empty! ******
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* isp116x: isp116x_submit_job: ****** FIFO not empty! ******
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* isp116x: isp116x_submit_job: ****** FIFO not empty! ******
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* 3 USB Device(s) found
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* scanning bus for storage devices... 0 Storage Device(s) found
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*
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* Value is in milliseconds.
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*/
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#ifdef ISP116X_HCD_USE_EXTRA_DELAY
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#define EXTRA_DELAY 2
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#endif
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/*
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* Enable the following defines if you wish enable debugging messages.
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*/
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#undef DEBUG /* enable debugging messages */
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#undef TRACE /* enable tracing code */
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#undef VERBOSE /* verbose debugging messages */
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#include "isp116x.h"
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#define DRIVER_VERSION "08 Jan 2007"
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static const char hcd_name[] = "isp116x-hcd";
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struct isp116x isp116x_dev;
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struct isp116x_platform_data isp116x_board;
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static int got_rhsc; /* root hub status change */
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struct usb_device *devgone; /* device which was disconnected */
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static int rh_devnum; /* address of Root Hub endpoint */
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/* ------------------------------------------------------------------------- */
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#define ALIGN(x,a) (((x)+(a)-1UL)&~((a)-1UL))
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#define min_t(type,x,y) \
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({ type __x = (x); type __y = (y); __x < __y ? __x : __y; })
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/* ------------------------------------------------------------------------- */
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static int isp116x_reset(struct isp116x *isp116x);
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/* --- Debugging functions ------------------------------------------------- */
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#define isp116x_show_reg(d, r) { \
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if ((r) < 0x20) { \
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DBG("%-12s[%02x]: %08x", #r, \
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r, isp116x_read_reg32(d, r)); \
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} else { \
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DBG("%-12s[%02x]: %04x", #r, \
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r, isp116x_read_reg16(d, r)); \
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} \
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}
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#define isp116x_show_regs(d) { \
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isp116x_show_reg(d, HCREVISION); \
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isp116x_show_reg(d, HCCONTROL); \
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isp116x_show_reg(d, HCCMDSTAT); \
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isp116x_show_reg(d, HCINTSTAT); \
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isp116x_show_reg(d, HCINTENB); \
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isp116x_show_reg(d, HCFMINTVL); \
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isp116x_show_reg(d, HCFMREM); \
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isp116x_show_reg(d, HCFMNUM); \
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isp116x_show_reg(d, HCLSTHRESH); \
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isp116x_show_reg(d, HCRHDESCA); \
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isp116x_show_reg(d, HCRHDESCB); \
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isp116x_show_reg(d, HCRHSTATUS); \
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isp116x_show_reg(d, HCRHPORT1); \
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isp116x_show_reg(d, HCRHPORT2); \
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isp116x_show_reg(d, HCHWCFG); \
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isp116x_show_reg(d, HCDMACFG); \
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isp116x_show_reg(d, HCXFERCTR); \
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isp116x_show_reg(d, HCuPINT); \
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isp116x_show_reg(d, HCuPINTENB); \
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isp116x_show_reg(d, HCCHIPID); \
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isp116x_show_reg(d, HCSCRATCH); \
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isp116x_show_reg(d, HCITLBUFLEN); \
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isp116x_show_reg(d, HCATLBUFLEN); \
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isp116x_show_reg(d, HCBUFSTAT); \
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isp116x_show_reg(d, HCRDITL0LEN); \
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isp116x_show_reg(d, HCRDITL1LEN); \
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}
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#if defined(TRACE)
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static int isp116x_get_current_frame_number(struct usb_device *usb_dev)
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{
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struct isp116x *isp116x = &isp116x_dev;
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return isp116x_read_reg32(isp116x, HCFMNUM);
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}
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static void dump_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
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int len, char *str)
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{
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#if defined(VERBOSE)
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int i;
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#endif
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DBG("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d stat:%#lx",
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str,
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isp116x_get_current_frame_number(dev),
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usb_pipedevice(pipe),
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usb_pipeendpoint(pipe),
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usb_pipeout(pipe) ? 'O' : 'I',
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usb_pipetype(pipe) < 2 ?
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(usb_pipeint(pipe) ?
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"INTR" : "ISOC") :
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(usb_pipecontrol(pipe) ? "CTRL" : "BULK"), len, dev->status);
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#if defined(VERBOSE)
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if (len > 0 && buffer) {
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printf(__FILE__ ": data(%d):", len);
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for (i = 0; i < 16 && i < len; i++)
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printf(" %02x", ((__u8 *) buffer)[i]);
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printf("%s\n", i < len ? "..." : "");
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}
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#endif
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}
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#define PTD_DIR_STR(ptd) ({char __c; \
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switch(PTD_GET_DIR(ptd)){ \
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case 0: __c = 's'; break; \
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case 1: __c = 'o'; break; \
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default: __c = 'i'; break; \
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}; __c;})
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/*
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Dump PTD info. The code documents the format
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perfectly, right :)
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*/
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static inline void dump_ptd(struct ptd *ptd)
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{
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#if defined(VERBOSE)
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int k;
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#endif
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DBG("PTD(ext) : cc:%x %d%c%d %d,%d,%d t:%x %x%x%x",
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PTD_GET_CC(ptd),
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PTD_GET_FA(ptd), PTD_DIR_STR(ptd), PTD_GET_EP(ptd),
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PTD_GET_COUNT(ptd), PTD_GET_LEN(ptd), PTD_GET_MPS(ptd),
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PTD_GET_TOGGLE(ptd),
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PTD_GET_ACTIVE(ptd), PTD_GET_SPD(ptd), PTD_GET_LAST(ptd));
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#if defined(VERBOSE)
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printf("isp116x: %s: PTD(byte): ", __FUNCTION__);
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for (k = 0; k < sizeof(struct ptd); ++k)
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printf("%02x ", ((u8 *) ptd)[k]);
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printf("\n");
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#endif
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}
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static inline void dump_ptd_data(struct ptd *ptd, u8 * buf, int type)
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{
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#if defined(VERBOSE)
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int k;
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if (type == 0 /* 0ut data */ ) {
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printf("isp116x: %s: out data: ", __FUNCTION__);
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for (k = 0; k < PTD_GET_LEN(ptd); ++k)
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printf("%02x ", ((u8 *) buf)[k]);
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printf("\n");
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}
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if (type == 1 /* 1n data */ ) {
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printf("isp116x: %s: in data: ", __FUNCTION__);
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for (k = 0; k < PTD_GET_COUNT(ptd); ++k)
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printf("%02x ", ((u8 *) buf)[k]);
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printf("\n");
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}
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if (PTD_GET_LAST(ptd))
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DBG("--- last PTD ---");
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#endif
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}
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#else
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#define dump_msg(dev, pipe, buffer, len, str) do { } while (0)
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#define dump_pkt(dev, pipe, buffer, len, setup, str, small) do {} while (0)
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#define dump_ptd(ptd) do {} while (0)
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#define dump_ptd_data(ptd, buf, type) do {} while (0)
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#endif
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/* --- Virtual Root Hub ---------------------------------------------------- */
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/* Device descriptor */
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static __u8 root_hub_dev_des[] = {
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0x12, /* __u8 bLength; */
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0x01, /* __u8 bDescriptorType; Device */
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0x10, /* __u16 bcdUSB; v1.1 */
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0x01,
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0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
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0x00, /* __u8 bDeviceSubClass; */
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0x00, /* __u8 bDeviceProtocol; */
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0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
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0x00, /* __u16 idVendor; */
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0x00,
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0x00, /* __u16 idProduct; */
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0x00,
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0x00, /* __u16 bcdDevice; */
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0x00,
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0x00, /* __u8 iManufacturer; */
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0x01, /* __u8 iProduct; */
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0x00, /* __u8 iSerialNumber; */
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0x01 /* __u8 bNumConfigurations; */
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};
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/* Configuration descriptor */
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static __u8 root_hub_config_des[] = {
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0x09, /* __u8 bLength; */
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0x02, /* __u8 bDescriptorType; Configuration */
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0x19, /* __u16 wTotalLength; */
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0x00,
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0x01, /* __u8 bNumInterfaces; */
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0x01, /* __u8 bConfigurationValue; */
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0x00, /* __u8 iConfiguration; */
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0x40, /* __u8 bmAttributes;
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Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
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0x00, /* __u8 MaxPower; */
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/* interface */
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0x09, /* __u8 if_bLength; */
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0x04, /* __u8 if_bDescriptorType; Interface */
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0x00, /* __u8 if_bInterfaceNumber; */
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0x00, /* __u8 if_bAlternateSetting; */
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0x01, /* __u8 if_bNumEndpoints; */
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0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
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0x00, /* __u8 if_bInterfaceSubClass; */
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0x00, /* __u8 if_bInterfaceProtocol; */
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0x00, /* __u8 if_iInterface; */
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/* endpoint */
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0x07, /* __u8 ep_bLength; */
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0x05, /* __u8 ep_bDescriptorType; Endpoint */
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0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
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0x03, /* __u8 ep_bmAttributes; Interrupt */
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0x00, /* __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
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0x02,
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0xff /* __u8 ep_bInterval; 255 ms */
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};
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static unsigned char root_hub_str_index0[] = {
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0x04, /* __u8 bLength; */
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0x03, /* __u8 bDescriptorType; String-descriptor */
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0x09, /* __u8 lang ID */
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0x04, /* __u8 lang ID */
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};
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static unsigned char root_hub_str_index1[] = {
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0x22, /* __u8 bLength; */
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0x03, /* __u8 bDescriptorType; String-descriptor */
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'I', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'S', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'P', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'1', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'1', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'6', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'x', /* __u8 Unicode */
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0, /* __u8 Unicode */
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' ', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'R', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'o', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'o', /* __u8 Unicode */
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0, /* __u8 Unicode */
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't', /* __u8 Unicode */
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0, /* __u8 Unicode */
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' ', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'H', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'u', /* __u8 Unicode */
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0, /* __u8 Unicode */
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'b', /* __u8 Unicode */
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0, /* __u8 Unicode */
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};
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/*
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* Hub class-specific descriptor is constructed dynamically
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*/
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/* --- Virtual root hub management functions ------------------------------- */
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static int rh_check_port_status(struct isp116x *isp116x)
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{
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u32 temp, ndp, i;
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int res;
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res = -1;
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temp = isp116x_read_reg32(isp116x, HCRHSTATUS);
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ndp = (temp & RH_A_NDP);
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for (i = 0; i < ndp; i++) {
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temp = isp116x_read_reg32(isp116x, HCRHPORT1 + i);
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/* check for a device disconnect */
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if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
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(RH_PS_PESC | RH_PS_CSC)) && ((temp & RH_PS_CCS) == 0)) {
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res = i;
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break;
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}
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}
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return res;
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}
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/* --- HC management functions --------------------------------------------- */
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/* Write len bytes to fifo, pad till 32-bit boundary
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*/
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static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len)
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{
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u8 *dp = (u8 *) buf;
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u16 *dp2 = (u16 *) buf;
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u16 w;
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int quot = len % 4;
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if ((unsigned long)dp2 & 1) {
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/* not aligned */
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for (; len > 1; len -= 2) {
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w = *dp++;
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w |= *dp++ << 8;
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isp116x_raw_write_data16(isp116x, w);
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}
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if (len)
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isp116x_write_data16(isp116x, (u16) * dp);
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} else {
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/* aligned */
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for (; len > 1; len -= 2)
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isp116x_raw_write_data16(isp116x, *dp2++);
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if (len)
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isp116x_write_data16(isp116x, 0xff & *((u8 *) dp2));
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}
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if (quot == 1 || quot == 2)
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isp116x_raw_write_data16(isp116x, 0);
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}
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/* Read len bytes from fifo and then read till 32-bit boundary
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*/
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static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len)
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{
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u8 *dp = (u8 *) buf;
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u16 *dp2 = (u16 *) buf;
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u16 w;
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int quot = len % 4;
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if ((unsigned long)dp2 & 1) {
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/* not aligned */
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for (; len > 1; len -= 2) {
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w = isp116x_raw_read_data16(isp116x);
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*dp++ = w & 0xff;
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*dp++ = (w >> 8) & 0xff;
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}
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if (len)
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*dp = 0xff & isp116x_read_data16(isp116x);
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} else {
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/* aligned */
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for (; len > 1; len -= 2)
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*dp2++ = isp116x_raw_read_data16(isp116x);
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if (len)
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*(u8 *) dp2 = 0xff & isp116x_read_data16(isp116x);
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}
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if (quot == 1 || quot == 2)
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isp116x_raw_read_data16(isp116x);
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}
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|
|
/* Write PTD's and data for scheduled transfers into the fifo ram.
|
|
* Fifo must be empty and ready */
|
|
static void pack_fifo(struct isp116x *isp116x, struct usb_device *dev,
|
|
unsigned long pipe, struct ptd *ptd, int n, void *data,
|
|
int len)
|
|
{
|
|
int buflen = n * sizeof(struct ptd) + len;
|
|
int i, done;
|
|
|
|
DBG("--- pack buffer %p - %d bytes (fifo %d) ---", data, len, buflen);
|
|
|
|
isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT);
|
|
isp116x_write_reg16(isp116x, HCXFERCTR, buflen);
|
|
isp116x_write_addr(isp116x, HCATLPORT | ISP116x_WRITE_OFFSET);
|
|
|
|
done = 0;
|
|
for (i = 0; i < n; i++) {
|
|
DBG("i=%d - done=%d - len=%d", i, done, PTD_GET_LEN(&ptd[i]));
|
|
|
|
dump_ptd(&ptd[i]);
|
|
isp116x_write_data16(isp116x, ptd[i].count);
|
|
isp116x_write_data16(isp116x, ptd[i].mps);
|
|
isp116x_write_data16(isp116x, ptd[i].len);
|
|
isp116x_write_data16(isp116x, ptd[i].faddr);
|
|
|
|
dump_ptd_data(&ptd[i], (__u8 *) data + done, 0);
|
|
write_ptddata_to_fifo(isp116x,
|
|
(__u8 *) data + done,
|
|
PTD_GET_LEN(&ptd[i]));
|
|
|
|
done += PTD_GET_LEN(&ptd[i]);
|
|
}
|
|
}
|
|
|
|
/* Read the processed PTD's and data from fifo ram back to URBs' buffers.
|
|
* Fifo must be full and done */
|
|
static int unpack_fifo(struct isp116x *isp116x, struct usb_device *dev,
|
|
unsigned long pipe, struct ptd *ptd, int n, void *data,
|
|
int len)
|
|
{
|
|
int buflen = n * sizeof(struct ptd) + len;
|
|
int i, done, cc, ret;
|
|
|
|
isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT);
|
|
isp116x_write_reg16(isp116x, HCXFERCTR, buflen);
|
|
isp116x_write_addr(isp116x, HCATLPORT);
|
|
|
|
ret = TD_CC_NOERROR;
|
|
done = 0;
|
|
for (i = 0; i < n; i++) {
|
|
DBG("i=%d - done=%d - len=%d", i, done, PTD_GET_LEN(&ptd[i]));
|
|
|
|
ptd[i].count = isp116x_read_data16(isp116x);
|
|
ptd[i].mps = isp116x_read_data16(isp116x);
|
|
ptd[i].len = isp116x_read_data16(isp116x);
|
|
ptd[i].faddr = isp116x_read_data16(isp116x);
|
|
dump_ptd(&ptd[i]);
|
|
|
|
read_ptddata_from_fifo(isp116x,
|
|
(__u8 *) data + done,
|
|
PTD_GET_LEN(&ptd[i]));
|
|
dump_ptd_data(&ptd[i], (__u8 *) data + done, 1);
|
|
|
|
done += PTD_GET_LEN(&ptd[i]);
|
|
|
|
cc = PTD_GET_CC(&ptd[i]);
|
|
|
|
/* Data underrun means basically that we had more buffer space than
|
|
* the function had data. It is perfectly normal but upper levels have
|
|
* to know how much we actually transferred.
|
|
*/
|
|
if (cc == TD_NOTACCESSED ||
|
|
(cc != TD_CC_NOERROR && (ret == TD_CC_NOERROR || ret == TD_DATAUNDERRUN)))
|
|
ret = cc;
|
|
}
|
|
|
|
DBG("--- unpack buffer %p - %d bytes (fifo %d) ---", data, len, buflen);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Interrupt handling
|
|
*/
|
|
static int isp116x_interrupt(struct isp116x *isp116x)
|
|
{
|
|
u16 irqstat;
|
|
u32 intstat;
|
|
int ret = 0;
|
|
|
|
isp116x_write_reg16(isp116x, HCuPINTENB, 0);
|
|
irqstat = isp116x_read_reg16(isp116x, HCuPINT);
|
|
isp116x_write_reg16(isp116x, HCuPINT, irqstat);
|
|
DBG(">>>>>> irqstat %x <<<<<<", irqstat);
|
|
|
|
if (irqstat & HCuPINT_ATL) {
|
|
DBG(">>>>>> HCuPINT_ATL <<<<<<");
|
|
udelay(500);
|
|
ret = 1;
|
|
}
|
|
|
|
if (irqstat & HCuPINT_OPR) {
|
|
intstat = isp116x_read_reg32(isp116x, HCINTSTAT);
|
|
isp116x_write_reg32(isp116x, HCINTSTAT, intstat);
|
|
DBG(">>>>>> HCuPINT_OPR %x <<<<<<", intstat);
|
|
|
|
if (intstat & HCINT_UE) {
|
|
ERR("unrecoverable error, controller disabled");
|
|
|
|
/* FIXME: be optimistic, hope that bug won't repeat
|
|
* often. Make some non-interrupt context restart the
|
|
* controller. Count and limit the retries though;
|
|
* either hardware or software errors can go forever...
|
|
*/
|
|
isp116x_reset(isp116x);
|
|
ret = -1;
|
|
return -1;
|
|
}
|
|
|
|
if (intstat & HCINT_RHSC) {
|
|
got_rhsc = 1;
|
|
ret = 1;
|
|
/* When root hub or any of its ports is going
|
|
to come out of suspend, it may take more
|
|
than 10ms for status bits to stabilize. */
|
|
wait_ms(20);
|
|
}
|
|
|
|
if (intstat & HCINT_SO) {
|
|
ERR("schedule overrun");
|
|
ret = -1;
|
|
}
|
|
|
|
irqstat &= ~HCuPINT_OPR;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* With one PTD we can transfer almost 1K in one go;
|
|
* HC does the splitting into endpoint digestible transactions
|
|
*/
|
|
struct ptd ptd[1];
|
|
|
|
static inline int max_transfer_len(struct usb_device *dev, unsigned long pipe)
|
|
{
|
|
unsigned mpck = usb_maxpacket(dev, pipe);
|
|
|
|
/* One PTD can transfer 1023 bytes but try to always
|
|
* transfer multiples of endpoint buffer size
|
|
*/
|
|
return 1023 / mpck * mpck;
|
|
}
|
|
|
|
/* Do an USB transfer
|
|
*/
|
|
static int isp116x_submit_job(struct usb_device *dev, unsigned long pipe,
|
|
int dir, void *buffer, int len)
|
|
{
|
|
struct isp116x *isp116x = &isp116x_dev;
|
|
int type = usb_pipetype(pipe);
|
|
int epnum = usb_pipeendpoint(pipe);
|
|
int max = usb_maxpacket(dev, pipe);
|
|
int dir_out = usb_pipeout(pipe);
|
|
int speed_low = usb_pipeslow(pipe);
|
|
int i, done = 0, stat, timeout, cc;
|
|
|
|
/* 500 frames or 0.5s timeout when function is busy and NAKs transactions for a while */
|
|
int retries = 500;
|
|
|
|
DBG("------------------------------------------------");
|
|
dump_msg(dev, pipe, buffer, len, "SUBMIT");
|
|
DBG("------------------------------------------------");
|
|
|
|
if (len >= 1024) {
|
|
ERR("Too big job");
|
|
dev->status = USB_ST_CRC_ERR;
|
|
return -1;
|
|
}
|
|
|
|
if (isp116x->disabled) {
|
|
ERR("EPIPE");
|
|
dev->status = USB_ST_CRC_ERR;
|
|
return -1;
|
|
}
|
|
|
|
/* device pulled? Shortcut the action. */
|
|
if (devgone == dev) {
|
|
ERR("ENODEV");
|
|
dev->status = USB_ST_CRC_ERR;
|
|
return USB_ST_CRC_ERR;
|
|
}
|
|
|
|
if (!max) {
|
|
ERR("pipesize for pipe %lx is zero", pipe);
|
|
dev->status = USB_ST_CRC_ERR;
|
|
return -1;
|
|
}
|
|
|
|
if (type == PIPE_ISOCHRONOUS) {
|
|
ERR("isochronous transfers not supported");
|
|
dev->status = USB_ST_CRC_ERR;
|
|
return -1;
|
|
}
|
|
|
|
/* FIFO not empty? */
|
|
if (isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_FULL) {
|
|
ERR("****** FIFO not empty! ******");
|
|
dev->status = USB_ST_BUF_ERR;
|
|
return -1;
|
|
}
|
|
|
|
retry:
|
|
isp116x_write_reg32(isp116x, HCINTSTAT, 0xff);
|
|
|
|
/* Prepare the PTD data */
|
|
ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK |
|
|
PTD_TOGGLE(usb_gettoggle(dev, epnum, dir_out));
|
|
ptd->mps = PTD_MPS(max) | PTD_SPD(speed_low) | PTD_EP(epnum) | PTD_LAST_MSK;
|
|
ptd->len = PTD_LEN(len) | PTD_DIR(dir);
|
|
ptd->faddr = PTD_FA(usb_pipedevice(pipe));
|
|
|
|
retry_same:
|
|
/* Pack data into FIFO ram */
|
|
pack_fifo(isp116x, dev, pipe, ptd, 1, buffer, len);
|
|
#ifdef EXTRA_DELAY
|
|
wait_ms(EXTRA_DELAY);
|
|
#endif
|
|
|
|
/* Start the data transfer */
|
|
|
|
/* Allow more time for a BULK device to react - some are slow */
|
|
if (usb_pipetype(pipe) == PIPE_BULK)
|
|
timeout = 5000;
|
|
else
|
|
timeout = 100;
|
|
|
|
/* Wait for it to complete */
|
|
for (;;) {
|
|
/* Check whether the controller is done */
|
|
stat = isp116x_interrupt(isp116x);
|
|
|
|
if (stat < 0) {
|
|
dev->status = USB_ST_CRC_ERR;
|
|
break;
|
|
}
|
|
if (stat > 0)
|
|
break;
|
|
|
|
/* Check the timeout */
|
|
if (--timeout)
|
|
udelay(1);
|
|
else {
|
|
ERR("CTL:TIMEOUT ");
|
|
stat = USB_ST_CRC_ERR;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* We got an Root Hub Status Change interrupt */
|
|
if (got_rhsc) {
|
|
isp116x_show_regs(isp116x);
|
|
|
|
got_rhsc = 0;
|
|
|
|
/* Abuse timeout */
|
|
timeout = rh_check_port_status(isp116x);
|
|
if (timeout >= 0) {
|
|
/*
|
|
* FIXME! NOTE! AAAARGH!
|
|
* This is potentially dangerous because it assumes
|
|
* that only one device is ever plugged in!
|
|
*/
|
|
devgone = dev;
|
|
}
|
|
}
|
|
|
|
/* Ok, now we can read transfer status */
|
|
|
|
/* FIFO not ready? */
|
|
if (!(isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_DONE)) {
|
|
ERR("****** FIFO not ready! ******");
|
|
dev->status = USB_ST_BUF_ERR;
|
|
return -1;
|
|
}
|
|
|
|
/* Unpack data from FIFO ram */
|
|
cc = unpack_fifo(isp116x, dev, pipe, ptd, 1, buffer, len);
|
|
|
|
i = PTD_GET_COUNT(ptd);
|
|
done += i;
|
|
buffer += i;
|
|
len -= i;
|
|
|
|
/* There was some kind of real problem; Prepare the PTD again
|
|
* and retry from the failed transaction on
|
|
*/
|
|
if (cc && cc != TD_NOTACCESSED && cc != TD_DATAUNDERRUN) {
|
|
if (retries >= 100) {
|
|
retries -= 100;
|
|
/* The chip will have toggled the toggle bit for the failed
|
|
* transaction too. We have to toggle it back.
|
|
*/
|
|
usb_settoggle(dev, epnum, dir_out, !PTD_GET_TOGGLE(ptd));
|
|
goto retry;
|
|
}
|
|
}
|
|
/* "Normal" errors; TD_NOTACCESSED would mean in effect that the function have NAKed
|
|
* the transactions from the first on for the whole frame. It may be busy and we retry
|
|
* with the same PTD. PTD_ACTIVE (and not TD_NOTACCESSED) would mean that some of the
|
|
* PTD didn't make it because the function was busy or the frame ended before the PTD
|
|
* finished. We prepare the rest of the data and try again.
|
|
*/
|
|
else if (cc == TD_NOTACCESSED || PTD_GET_ACTIVE(ptd) || (cc != TD_DATAUNDERRUN && PTD_GET_COUNT(ptd) < PTD_GET_LEN(ptd))) {
|
|
if (retries) {
|
|
--retries;
|
|
if (cc == TD_NOTACCESSED && PTD_GET_ACTIVE(ptd) && !PTD_GET_COUNT(ptd)) goto retry_same;
|
|
usb_settoggle(dev, epnum, dir_out, PTD_GET_TOGGLE(ptd));
|
|
goto retry;
|
|
}
|
|
}
|
|
|
|
if (cc != TD_CC_NOERROR && cc != TD_DATAUNDERRUN) {
|
|
DBG("****** completition code error %x ******", cc);
|
|
switch (cc) {
|
|
case TD_CC_BITSTUFFING:
|
|
dev->status = USB_ST_BIT_ERR;
|
|
break;
|
|
case TD_CC_STALL:
|
|
dev->status = USB_ST_STALLED;
|
|
break;
|
|
case TD_BUFFEROVERRUN:
|
|
case TD_BUFFERUNDERRUN:
|
|
dev->status = USB_ST_BUF_ERR;
|
|
break;
|
|
default:
|
|
dev->status = USB_ST_CRC_ERR;
|
|
}
|
|
return -cc;
|
|
}
|
|
else usb_settoggle(dev, epnum, dir_out, PTD_GET_TOGGLE(ptd));
|
|
|
|
dump_msg(dev, pipe, buffer, len, "SUBMIT(ret)");
|
|
|
|
dev->status = 0;
|
|
return done;
|
|
}
|
|
|
|
/* Adapted from au1x00_usb_ohci.c
|
|
*/
|
|
static int isp116x_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
|
|
void *buffer, int transfer_len,
|
|
struct devrequest *cmd)
|
|
{
|
|
struct isp116x *isp116x = &isp116x_dev;
|
|
u32 tmp = 0;
|
|
|
|
int leni = transfer_len;
|
|
int len = 0;
|
|
int stat = 0;
|
|
u32 datab[4];
|
|
u8 *data_buf = (u8 *) datab;
|
|
u16 bmRType_bReq;
|
|
u16 wValue;
|
|
u16 wIndex;
|
|
u16 wLength;
|
|
|
|
if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
|
|
INFO("Root-Hub submit IRQ: NOT implemented");
|
|
return 0;
|
|
}
|
|
|
|
bmRType_bReq = cmd->requesttype | (cmd->request << 8);
|
|
wValue = swap_16(cmd->value);
|
|
wIndex = swap_16(cmd->index);
|
|
wLength = swap_16(cmd->length);
|
|
|
|
DBG("--- HUB ----------------------------------------");
|
|
DBG("submit rh urb, req=%x val=%#x index=%#x len=%d",
|
|
bmRType_bReq, wValue, wIndex, wLength);
|
|
dump_msg(dev, pipe, buffer, transfer_len, "RH");
|
|
DBG("------------------------------------------------");
|
|
|
|
switch (bmRType_bReq) {
|
|
case RH_GET_STATUS:
|
|
DBG("RH_GET_STATUS");
|
|
|
|
*(__u16 *) data_buf = swap_16(1);
|
|
len = 2;
|
|
break;
|
|
|
|
case RH_GET_STATUS | RH_INTERFACE:
|
|
DBG("RH_GET_STATUS | RH_INTERFACE");
|
|
|
|
*(__u16 *) data_buf = swap_16(0);
|
|
len = 2;
|
|
break;
|
|
|
|
case RH_GET_STATUS | RH_ENDPOINT:
|
|
DBG("RH_GET_STATUS | RH_ENDPOINT");
|
|
|
|
*(__u16 *) data_buf = swap_16(0);
|
|
len = 2;
|
|
break;
|
|
|
|
case RH_GET_STATUS | RH_CLASS:
|
|
DBG("RH_GET_STATUS | RH_CLASS");
|
|
|
|
tmp = isp116x_read_reg32(isp116x, HCRHSTATUS);
|
|
|
|
*(__u32 *) data_buf = swap_32(tmp & ~(RH_HS_CRWE | RH_HS_DRWE));
|
|
len = 4;
|
|
break;
|
|
|
|
case RH_GET_STATUS | RH_OTHER | RH_CLASS:
|
|
DBG("RH_GET_STATUS | RH_OTHER | RH_CLASS");
|
|
|
|
tmp = isp116x_read_reg32(isp116x, HCRHPORT1 + wIndex - 1);
|
|
*(__u32 *) data_buf = swap_32(tmp);
|
|
isp116x_show_regs(isp116x);
|
|
len = 4;
|
|
break;
|
|
|
|
case RH_CLEAR_FEATURE | RH_ENDPOINT:
|
|
DBG("RH_CLEAR_FEATURE | RH_ENDPOINT");
|
|
|
|
switch (wValue) {
|
|
case RH_ENDPOINT_STALL:
|
|
DBG("C_HUB_ENDPOINT_STALL");
|
|
len = 0;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case RH_CLEAR_FEATURE | RH_CLASS:
|
|
DBG("RH_CLEAR_FEATURE | RH_CLASS");
|
|
|
|
switch (wValue) {
|
|
case RH_C_HUB_LOCAL_POWER:
|
|
DBG("C_HUB_LOCAL_POWER");
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_C_HUB_OVER_CURRENT:
|
|
DBG("C_HUB_OVER_CURRENT");
|
|
isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_OCIC);
|
|
len = 0;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
|
|
DBG("RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS");
|
|
|
|
switch (wValue) {
|
|
case RH_PORT_ENABLE:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_CCS);
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_PORT_SUSPEND:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_POCI);
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_PORT_POWER:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_LSDA);
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_C_PORT_CONNECTION:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_CSC);
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_C_PORT_ENABLE:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_PESC);
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_C_PORT_SUSPEND:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_PSSC);
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_C_PORT_OVER_CURRENT:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_POCI);
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_C_PORT_RESET:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_PRSC);
|
|
len = 0;
|
|
break;
|
|
|
|
default:
|
|
ERR("invalid wValue");
|
|
stat = USB_ST_STALLED;
|
|
}
|
|
|
|
isp116x_show_regs(isp116x);
|
|
|
|
break;
|
|
|
|
case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
|
|
DBG("RH_SET_FEATURE | RH_OTHER | RH_CLASS");
|
|
|
|
switch (wValue) {
|
|
case RH_PORT_SUSPEND:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_PSS);
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_PORT_RESET:
|
|
/* Spin until any current reset finishes */
|
|
while (1) {
|
|
tmp =
|
|
isp116x_read_reg32(isp116x,
|
|
HCRHPORT1 + wIndex - 1);
|
|
if (!(tmp & RH_PS_PRS))
|
|
break;
|
|
wait_ms(1);
|
|
}
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_PRS);
|
|
wait_ms(10);
|
|
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_PORT_POWER:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_PPS);
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_PORT_ENABLE:
|
|
isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
|
|
RH_PS_PES);
|
|
len = 0;
|
|
break;
|
|
|
|
default:
|
|
ERR("invalid wValue");
|
|
stat = USB_ST_STALLED;
|
|
}
|
|
|
|
isp116x_show_regs(isp116x);
|
|
|
|
break;
|
|
|
|
case RH_SET_ADDRESS:
|
|
DBG("RH_SET_ADDRESS");
|
|
|
|
rh_devnum = wValue;
|
|
len = 0;
|
|
break;
|
|
|
|
case RH_GET_DESCRIPTOR:
|
|
DBG("RH_GET_DESCRIPTOR: %x, %d", wValue, wLength);
|
|
|
|
switch (wValue) {
|
|
case (USB_DT_DEVICE << 8): /* device descriptor */
|
|
len = min_t(unsigned int,
|
|
leni, min_t(unsigned int,
|
|
sizeof(root_hub_dev_des),
|
|
wLength));
|
|
data_buf = root_hub_dev_des;
|
|
break;
|
|
|
|
case (USB_DT_CONFIG << 8): /* configuration descriptor */
|
|
len = min_t(unsigned int,
|
|
leni, min_t(unsigned int,
|
|
sizeof(root_hub_config_des),
|
|
wLength));
|
|
data_buf = root_hub_config_des;
|
|
break;
|
|
|
|
case ((USB_DT_STRING << 8) | 0x00): /* string 0 descriptors */
|
|
len = min_t(unsigned int,
|
|
leni, min_t(unsigned int,
|
|
sizeof(root_hub_str_index0),
|
|
wLength));
|
|
data_buf = root_hub_str_index0;
|
|
break;
|
|
|
|
case ((USB_DT_STRING << 8) | 0x01): /* string 1 descriptors */
|
|
len = min_t(unsigned int,
|
|
leni, min_t(unsigned int,
|
|
sizeof(root_hub_str_index1),
|
|
wLength));
|
|
data_buf = root_hub_str_index1;
|
|
break;
|
|
|
|
default:
|
|
ERR("invalid wValue");
|
|
stat = USB_ST_STALLED;
|
|
}
|
|
|
|
break;
|
|
|
|
case RH_GET_DESCRIPTOR | RH_CLASS:
|
|
DBG("RH_GET_DESCRIPTOR | RH_CLASS");
|
|
|
|
tmp = isp116x_read_reg32(isp116x, HCRHDESCA);
|
|
|
|
data_buf[0] = 0x09; /* min length; */
|
|
data_buf[1] = 0x29;
|
|
data_buf[2] = tmp & RH_A_NDP;
|
|
data_buf[3] = 0;
|
|
if (tmp & RH_A_PSM) /* per-port power switching? */
|
|
data_buf[3] |= 0x01;
|
|
if (tmp & RH_A_NOCP) /* no overcurrent reporting? */
|
|
data_buf[3] |= 0x10;
|
|
else if (tmp & RH_A_OCPM) /* per-port overcurrent rep? */
|
|
data_buf[3] |= 0x08;
|
|
|
|
/* Corresponds to data_buf[4-7] */
|
|
datab[1] = 0;
|
|
data_buf[5] = (tmp & RH_A_POTPGT) >> 24;
|
|
|
|
tmp = isp116x_read_reg32(isp116x, HCRHDESCB);
|
|
|
|
data_buf[7] = tmp & RH_B_DR;
|
|
if (data_buf[2] < 7)
|
|
data_buf[8] = 0xff;
|
|
else {
|
|
data_buf[0] += 2;
|
|
data_buf[8] = (tmp & RH_B_DR) >> 8;
|
|
data_buf[10] = data_buf[9] = 0xff;
|
|
}
|
|
|
|
len = min_t(unsigned int, leni,
|
|
min_t(unsigned int, data_buf[0], wLength));
|
|
break;
|
|
|
|
case RH_GET_CONFIGURATION:
|
|
DBG("RH_GET_CONFIGURATION");
|
|
|
|
*(__u8 *) data_buf = 0x01;
|
|
len = 1;
|
|
break;
|
|
|
|
case RH_SET_CONFIGURATION:
|
|
DBG("RH_SET_CONFIGURATION");
|
|
|
|
isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPSC);
|
|
len = 0;
|
|
break;
|
|
|
|
default:
|
|
ERR("*** *** *** unsupported root hub command *** *** ***");
|
|
stat = USB_ST_STALLED;
|
|
}
|
|
|
|
len = min_t(int, len, leni);
|
|
if (buffer != data_buf)
|
|
memcpy(buffer, data_buf, len);
|
|
|
|
dev->act_len = len;
|
|
dev->status = stat;
|
|
DBG("dev act_len %d, status %d", dev->act_len, dev->status);
|
|
|
|
dump_msg(dev, pipe, buffer, transfer_len, "RH(ret)");
|
|
|
|
return stat;
|
|
}
|
|
|
|
/* --- Transfer functions -------------------------------------------------- */
|
|
|
|
int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
|
|
int len, int interval)
|
|
{
|
|
DBG("dev=%p pipe=%#lx buf=%p size=%d int=%d",
|
|
dev, pipe, buffer, len, interval);
|
|
|
|
return -1;
|
|
}
|
|
|
|
int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
|
|
int len, struct devrequest *setup)
|
|
{
|
|
int devnum = usb_pipedevice(pipe);
|
|
int epnum = usb_pipeendpoint(pipe);
|
|
int max = max_transfer_len(dev, pipe);
|
|
int dir_in = usb_pipein(pipe);
|
|
int done, ret;
|
|
|
|
/* Control message is for the HUB? */
|
|
if (devnum == rh_devnum)
|
|
return isp116x_submit_rh_msg(dev, pipe, buffer, len, setup);
|
|
|
|
/* Ok, no HUB message so send the message to the device */
|
|
|
|
/* Setup phase */
|
|
DBG("--- SETUP PHASE --------------------------------");
|
|
usb_settoggle(dev, epnum, 1, 0);
|
|
ret = isp116x_submit_job(dev, pipe,
|
|
PTD_DIR_SETUP,
|
|
setup, sizeof(struct devrequest));
|
|
if (ret < 0) {
|
|
DBG("control setup phase error (ret = %d", ret);
|
|
return -1;
|
|
}
|
|
|
|
/* Data phase */
|
|
DBG("--- DATA PHASE ---------------------------------");
|
|
done = 0;
|
|
usb_settoggle(dev, epnum, !dir_in, 1);
|
|
while (done < len) {
|
|
ret = isp116x_submit_job(dev, pipe,
|
|
dir_in ? PTD_DIR_IN : PTD_DIR_OUT,
|
|
(__u8 *) buffer + done,
|
|
max > len - done ? len - done : max);
|
|
if (ret < 0) {
|
|
DBG("control data phase error (ret = %d)", ret);
|
|
return -1;
|
|
}
|
|
done += ret;
|
|
|
|
if (dir_in && ret < max) /* short packet */
|
|
break;
|
|
}
|
|
|
|
/* Status phase */
|
|
DBG("--- STATUS PHASE -------------------------------");
|
|
usb_settoggle(dev, epnum, !dir_in, 1);
|
|
ret = isp116x_submit_job(dev, pipe,
|
|
!dir_in ? PTD_DIR_IN : PTD_DIR_OUT, NULL, 0);
|
|
if (ret < 0) {
|
|
DBG("control status phase error (ret = %d", ret);
|
|
return -1;
|
|
}
|
|
|
|
dev->act_len = done;
|
|
|
|
dump_msg(dev, pipe, buffer, len, "DEV(ret)");
|
|
|
|
return done;
|
|
}
|
|
|
|
int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
|
|
int len)
|
|
{
|
|
int dir_out = usb_pipeout(pipe);
|
|
int max = max_transfer_len(dev, pipe);
|
|
int done, ret;
|
|
|
|
DBG("--- BULK ---------------------------------------");
|
|
DBG("dev=%ld pipe=%ld buf=%p size=%d dir_out=%d",
|
|
usb_pipedevice(pipe), usb_pipeendpoint(pipe), buffer, len, dir_out);
|
|
|
|
done = 0;
|
|
while (done < len) {
|
|
ret = isp116x_submit_job(dev, pipe,
|
|
!dir_out ? PTD_DIR_IN : PTD_DIR_OUT,
|
|
(__u8 *) buffer + done,
|
|
max > len - done ? len - done : max);
|
|
if (ret < 0) {
|
|
DBG("error on bulk message (ret = %d)", ret);
|
|
return -1;
|
|
}
|
|
|
|
done += ret;
|
|
|
|
if (!dir_out && ret < max) /* short packet */
|
|
break;
|
|
}
|
|
|
|
dev->act_len = done;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* --- Basic functions ----------------------------------------------------- */
|
|
|
|
static int isp116x_sw_reset(struct isp116x *isp116x)
|
|
{
|
|
int retries = 15;
|
|
int ret = 0;
|
|
|
|
DBG("");
|
|
|
|
isp116x->disabled = 1;
|
|
|
|
isp116x_write_reg16(isp116x, HCSWRES, HCSWRES_MAGIC);
|
|
isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR);
|
|
while (--retries) {
|
|
/* It usually resets within 1 ms */
|
|
wait_ms(1);
|
|
if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR))
|
|
break;
|
|
}
|
|
if (!retries) {
|
|
ERR("software reset timeout");
|
|
ret = -1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int isp116x_reset(struct isp116x *isp116x)
|
|
{
|
|
unsigned long t;
|
|
u16 clkrdy = 0;
|
|
int ret, timeout = 15 /* ms */ ;
|
|
|
|
DBG("");
|
|
|
|
ret = isp116x_sw_reset(isp116x);
|
|
if (ret)
|
|
return ret;
|
|
|
|
for (t = 0; t < timeout; t++) {
|
|
clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY;
|
|
if (clkrdy)
|
|
break;
|
|
wait_ms(1);
|
|
}
|
|
if (!clkrdy) {
|
|
ERR("clock not ready after %dms", timeout);
|
|
/* After sw_reset the clock won't report to be ready, if
|
|
H_WAKEUP pin is high. */
|
|
ERR("please make sure that the H_WAKEUP pin is pulled low!");
|
|
ret = -1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void isp116x_stop(struct isp116x *isp116x)
|
|
{
|
|
u32 val;
|
|
|
|
DBG("");
|
|
|
|
isp116x_write_reg16(isp116x, HCuPINTENB, 0);
|
|
|
|
/* Switch off ports' power, some devices don't come up
|
|
after next 'start' without this */
|
|
val = isp116x_read_reg32(isp116x, HCRHDESCA);
|
|
val &= ~(RH_A_NPS | RH_A_PSM);
|
|
isp116x_write_reg32(isp116x, HCRHDESCA, val);
|
|
isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS);
|
|
|
|
isp116x_sw_reset(isp116x);
|
|
}
|
|
|
|
/*
|
|
* Configure the chip. The chip must be successfully reset by now.
|
|
*/
|
|
static int isp116x_start(struct isp116x *isp116x)
|
|
{
|
|
struct isp116x_platform_data *board = isp116x->board;
|
|
u32 val;
|
|
|
|
DBG("");
|
|
|
|
/* Clear interrupt status and disable all interrupt sources */
|
|
isp116x_write_reg16(isp116x, HCuPINT, 0xff);
|
|
isp116x_write_reg16(isp116x, HCuPINTENB, 0);
|
|
|
|
isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE);
|
|
isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE);
|
|
|
|
/* Hardware configuration */
|
|
val = HCHWCFG_DBWIDTH(1);
|
|
if (board->sel15Kres)
|
|
val |= HCHWCFG_15KRSEL;
|
|
/* Remote wakeup won't work without working clock */
|
|
if (board->remote_wakeup_enable)
|
|
val |= HCHWCFG_CLKNOTSTOP;
|
|
if (board->oc_enable)
|
|
val |= HCHWCFG_ANALOG_OC;
|
|
isp116x_write_reg16(isp116x, HCHWCFG, val);
|
|
|
|
/* --- Root hub configuration */
|
|
val = (25 << 24) & RH_A_POTPGT;
|
|
/* AN10003_1.pdf recommends RH_A_NPS (no power switching) to
|
|
be always set. Yet, instead, we request individual port
|
|
power switching. */
|
|
val |= RH_A_PSM;
|
|
/* Report overcurrent per port */
|
|
val |= RH_A_OCPM;
|
|
isp116x_write_reg32(isp116x, HCRHDESCA, val);
|
|
isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA);
|
|
|
|
val = RH_B_PPCM;
|
|
isp116x_write_reg32(isp116x, HCRHDESCB, val);
|
|
isp116x->rhdescb = isp116x_read_reg32(isp116x, HCRHDESCB);
|
|
|
|
val = 0;
|
|
if (board->remote_wakeup_enable)
|
|
val |= RH_HS_DRWE;
|
|
isp116x_write_reg32(isp116x, HCRHSTATUS, val);
|
|
isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS);
|
|
|
|
isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf);
|
|
|
|
/* Go operational */
|
|
val = HCCONTROL_USB_OPER;
|
|
if (board->remote_wakeup_enable)
|
|
val |= HCCONTROL_RWE;
|
|
isp116x_write_reg32(isp116x, HCCONTROL, val);
|
|
|
|
/* Disable ports to avoid race in device enumeration */
|
|
isp116x_write_reg32(isp116x, HCRHPORT1, RH_PS_CCS);
|
|
isp116x_write_reg32(isp116x, HCRHPORT2, RH_PS_CCS);
|
|
|
|
isp116x_show_regs(isp116x);
|
|
|
|
isp116x->disabled = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* --- Init functions ------------------------------------------------------ */
|
|
|
|
int isp116x_check_id(struct isp116x *isp116x)
|
|
{
|
|
int val;
|
|
|
|
val = isp116x_read_reg16(isp116x, HCCHIPID);
|
|
if ((val & HCCHIPID_MASK) != HCCHIPID_MAGIC) {
|
|
ERR("invalid chip ID %04x", val);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int usb_lowlevel_init(void)
|
|
{
|
|
struct isp116x *isp116x = &isp116x_dev;
|
|
|
|
DBG("");
|
|
|
|
got_rhsc = rh_devnum = 0;
|
|
|
|
/* Init device registers addr */
|
|
isp116x->addr_reg = (u16 *) ISP116X_HCD_ADDR;
|
|
isp116x->data_reg = (u16 *) ISP116X_HCD_DATA;
|
|
|
|
/* Setup specific board settings */
|
|
#ifdef ISP116X_HCD_SEL15kRES
|
|
isp116x_board.sel15Kres = 1;
|
|
#endif
|
|
#ifdef ISP116X_HCD_OC_ENABLE
|
|
isp116x_board.oc_enable = 1;
|
|
#endif
|
|
#ifdef ISP116X_HCD_REMOTE_WAKEUP_ENABLE
|
|
isp116x_board.remote_wakeup_enable = 1;
|
|
#endif
|
|
isp116x->board = &isp116x_board;
|
|
|
|
/* Try to get ISP116x silicon chip ID */
|
|
if (isp116x_check_id(isp116x) < 0)
|
|
return -1;
|
|
|
|
isp116x->disabled = 1;
|
|
isp116x->sleeping = 0;
|
|
|
|
isp116x_reset(isp116x);
|
|
isp116x_start(isp116x);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int usb_lowlevel_stop(void)
|
|
{
|
|
struct isp116x *isp116x = &isp116x_dev;
|
|
|
|
DBG("");
|
|
|
|
if (!isp116x->disabled)
|
|
isp116x_stop(isp116x);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_USB_ISP116X_HCD */
|