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Support generic OHCI support for the s3c24x0 cpu.

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master
Markus Klotzbuecher 19 years ago committed by Markus Klotzbuecher
parent 301f1aa384
commit ddf83a2fce
7 changed files with 199 additions and 26 deletions
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  1. 6
      cpu/arm920t/at91rm9200/usb.c
  2. 2
      cpu/arm920t/s3c24x0/Makefile
  3. 72
      cpu/arm920t/s3c24x0/usb.c
  4. 5
      cpu/pxa/usb.c
  5. 133
      drivers/usb_ohci.c
  6. 2
      drivers/usb_ohci.h
  7. 5
      include/configs/trab.h

6
cpu/arm920t/at91rm9200/usb.c
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@ -43,5 +43,11 @@ int usb_cpu_stop()
*AT91C_PMC_SCDR = AT91C_PMC_UHP; /* 48MHz clock disabled for UHP */
return 0;
}
int usb_cpu_init_fail()
{
usb_cpu_stop();
}
# endif /* CONFIG_AT91RM9200 */
#endif /* defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) */

2
cpu/arm920t/s3c24x0/Makefile
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@ -26,7 +26,7 @@ include $(TOPDIR)/config.mk
LIB = lib$(SOC).a
OBJS = i2c.o interrupts.o serial.o speed.o \
usb_ohci.o
usb.o
all: .depend $(LIB)

72
cpu/arm920t/s3c24x0/usb.c
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@ -0,0 +1,72 @@
/*
* (C) Copyright 2006
* DENX Software Engineering <mk@denx.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#if defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT)
# if defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410)
#if defined(CONFIG_S3C2400)
# include <s3c2400.h>
#elif defined(CONFIG_S3C2410)
# include <s3c2410.h>
#endif
int usb_cpu_init()
{
S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
/*
* Set the 48 MHz UPLL clocking. Values are taken from
* "PLL value selection guide", 6-23, s3c2400_UM.pdf.
*/
clk_power->UPLLCON = ((40 << 12) + (1 << 4) + 2);
gpio->MISCCR |= 0x8; /* 1 = use pads related USB for USB host */
/*
* Enable USB host clock.
*/
clk_power->CLKCON |= (1 << 4);
return 0;
}
int usb_cpu_stop()
{
S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
/* may not want to do this */
clk_power->CLKCON &= ~(1 << 4);
return 0;
}
int usb_cpu_init_fail()
{
S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
clk_power->CLKCON &= ~(1 << 4);
return 0;
}
# endif /* defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) */
#endif /* defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) */

5
cpu/pxa/usb.c
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@ -66,8 +66,13 @@ int usb_cpu_stop()
{
/* may not want to do this */
/* CKENA &= ~(CKENA_2_USBHOST | CKENA_20_UDC); */
return 0;
}
int usb_cpu_init_fail()
{
return 0;
}
# endif /* CONFIG_CPU_MONAHANS */
#endif /* defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) */

133
drivers/usb_ohci.c
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@ -21,7 +21,7 @@
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
@ -45,13 +45,25 @@
#ifdef CONFIG_USB_OHCI
#include <asm/arch/hardware.h>
#if defined(CONFIG_S3C2400)
# include <s3c2400.h>
#elif defined(CONFIG_S3C2410)
# include <s3c2410.h>
#elif defined(CONFIG_ARM920T)
# include <asm/arch/hardware.h>
#elif defined(CONFIG_CPU_MONAHANS)
# include <asm/arch/pxa-regs.h>
#endif
#include <malloc.h>
#include <usb.h>
#include "usb_ohci.h"
#ifdef CONFIG_ARM920T
#undef S3C24X0_merge
#if defined(CONFIG_ARM920T) || \
defined(CONFIG_S3C2400) || \
defined(CONFIG_S3C2410)
# define OHCI_USE_NPS /* force NoPowerSwitching mode */
#endif
@ -98,6 +110,12 @@ int got_rhsc;
/* device which was disconnected */
struct usb_device *devgone;
#ifdef S3C24X0_merge
/* flag guarding URB transation */
int urb_finished = 0;
#endif
/*-------------------------------------------------------------------------*/
/* AMD-756 (D2 rev) reports corrupt register contents in some cases.
@ -402,6 +420,17 @@ int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
err("sohci_submit_job: EPIPE");
return -1;
}
#ifdef S3C24X0_merge
/* if we have an unfinished URB from previous transaction let's
* fail and scream as quickly as possible so as not to corrupt
* further communication */
if (!urb_finished) {
err("sohci_submit_job: URB NOT FINISHED");
return -1;
}
/* we're about to begin a new transaction here so mark the URB unfinished */
urb_finished = 0;
#endif
/* every endpoint has a ed, locate and fill it */
if (!(ed = ep_add_ed (dev, pipe))) {
@ -574,12 +603,14 @@ static int ep_unlink (ohci_t *ohci, ed_t *ed)
/*-------------------------------------------------------------------------*/
/* add/reinit an endpoint; this should be done once at the usb_set_configuration command,
* but the USB stack is a little bit stateless so we do it at every transaction
* if the state of the ed is ED_NEW then a dummy td is added and the state is changed to ED_UNLINK
* in all other cases the state is left unchanged
* the ed info fields are setted anyway even though most of them should not change */
/* add/reinit an endpoint; this should be done once at the
* usb_set_configuration command, but the USB stack is a little bit
* stateless so we do it at every transaction if the state of the ed
* is ED_NEW then a dummy td is added and the state is changed to
* ED_UNLINK in all other cases the state is left unchanged the ed
* info fields are setted anyway even though most of them should not
* change
*/
static ed_t * ep_add_ed (struct usb_device *usb_dev, unsigned long pipe)
{
td_t *td;
@ -663,7 +694,9 @@ static void td_fill (ohci_t *ohci, unsigned int info,
else
td->hwBE = 0;
td->hwNextTD = m32_swap (td_pt);
#ifndef S3C24X0_merge
td->hwPSW [0] = m16_swap (((__u32)data & 0x0FFF) | 0xE000);
#endif
/* append to queue */
td->ed->hwTailP = td->hwNextTD;
@ -830,7 +863,18 @@ static int dl_done_list (ohci_t *ohci, td_t *td_list)
dbg("ConditionCode %#x", cc);
stat = cc_to_error[cc];
}
#ifdef S3C24X0_merge
/* see if this done list makes for all TD's of current URB,
* and mark the URB finished if so */
if (++(lurb_priv->td_cnt) == lurb_priv->length) {
if ((ed->state & (ED_OPER | ED_UNLINK)))
urb_finished = 1;
else
dbg("dl_done_list: strange.., ED state %x, ed->state\n");
} else
dbg("dl_done_list: processing TD %x, len %x\n", lurb_priv->td_cnt,
lurb_priv->length);
#endif
if (ed->state != ED_NEW) {
edHeadP = m32_swap (ed->hwHeadP) & 0xfffffff0;
edTailP = m32_swap (ed->hwTailP);
@ -1172,7 +1216,7 @@ pkt_print(dev, pipe, buffer, transfer_len, cmd, "SUB(rh)", usb_pipein(pipe));
}
len = min_t(unsigned int, leni,
min_t(unsigned int, data_buf [0], wLength));
min_t(unsigned int, data_buf [0], wLength));
OK (len);
}
@ -1260,18 +1304,38 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
stat = USB_ST_CRC_ERR;
break;
}
#ifdef S3C24X0_merge
/* NOTE: since we are not interrupt driven in U-Boot and always
* handle only one URB at a time, we cannot assume the
* transaction finished on the first successful return from
* hc_interrupt().. unless the flag for current URB is set,
* meaning that all TD's to/from device got actually
* transferred and processed. If the current URB is not
* finished we need to re-iterate this loop so as
* hc_interrupt() gets called again as there needs to be some
* more TD's to process still */
if ((stat >= 0) && (stat != 0xff) && (urb_finished)) {
#else
if (stat >= 0 && stat != 0xff) {
#endif
/* 0xff is returned for an SF-interrupt */
break;
}
if (--timeout) {
wait_ms(1);
} else {
err("CTL:TIMEOUT ");
#ifdef S3C24X0_merge
dbg("submit_common_msg: TO status %x\n", stat);
urb_finished = 1;
#endif
stat = USB_ST_CRC_ERR;
break;
}
}
#ifndef S3C24X0_merge
/* we got an Root Hub Status Change interrupt */
if (got_rhsc) {
#ifdef DEBUG
@ -1293,6 +1357,7 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
devgone = dev;
}
}
#endif /* S3C24X0_merge */
dev->status = stat;
dev->act_len = transfer_len;
@ -1462,24 +1527,40 @@ static int hc_start (ohci_t * ohci)
/* an interrupt happens */
static int
hc_interrupt (void)
static int hc_interrupt (void)
{
ohci_t *ohci = &gohci;
struct ohci_regs *regs = ohci->regs;
int ints;
int stat = -1;
#ifdef S3C24X0_merge
if ((ohci->hcca->done_head != 0) &&
!(m32_swap (ohci->hcca->done_head) & 0x01)) {
ints = OHCI_INTR_WDH;
} else if ((ints = readl (&regs->intrstatus)) == ~(u32)0) {
ohci->disabled++;
err ("%s device removed!", ohci->slot_name);
return -1;
} else if ((ints &= readl (&regs->intrenable)) == 0) {
dbg("hc_interrupt: returning..\n");
return 0xff;
}
#else
if ((ohci->hcca->done_head != 0) && !(m32_swap (ohci->hcca->done_head) & 0x01)) {
ints = OHCI_INTR_WDH;
} else {
ints = readl (&regs->intrstatus);
}
#endif
/* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
if (ints & OHCI_INTR_RHSC) {
got_rhsc = 1;
#ifdef S3C24X0_merge
stat = 0xff;
#endif
}
if (ints & OHCI_INTR_UE) {
@ -1552,13 +1633,13 @@ static char ohci_inited = 0;
int usb_lowlevel_init(void)
{
#if CFG_USB_OHCI_CPU_INIT
#ifdef CFG_USB_OHCI_CPU_INIT
/* cpu dependant init */
if(usb_cpu_init())
return -1;
#endif
#if CFG_USB_OHCI_BOARD_INIT
#ifdef CFG_USB_OHCI_BOARD_INIT
/* board dependant init */
if(usb_board_init())
return -1;
@ -1598,15 +1679,14 @@ int usb_lowlevel_init(void)
if (hc_reset (&gohci) < 0) {
hc_release_ohci (&gohci);
err ("can't reset usb-%s", gohci.slot_name);
/* Initialization failed disable clocks */
#if CFG_USB_OHCI_BOARD_INIT
#ifdef CFG_USB_OHCI_BOARD_INIT
/* board dependant cleanup */
usb_board_stop();
usb_board_init_fail();
#endif
#if CFG_USB_OHCI_CPU_INIT
#ifdef CFG_USB_OHCI_CPU_INIT
/* cpu dependant cleanup */
usb_cpu_stop();
usb_cpu_init_fail();
#endif
return -1;
}
@ -1618,12 +1698,12 @@ int usb_lowlevel_init(void)
err ("can't start usb-%s", gohci.slot_name);
hc_release_ohci (&gohci);
/* Initialization failed */
#if CFG_USB_OHCI_BOARD_INIT
#ifdef CFG_USB_OHCI_BOARD_INIT
/* board dependant cleanup */
usb_board_stop();
#endif
#if CFG_USB_OHCI_CPU_INIT
#ifdef CFG_USB_OHCI_CPU_INIT
/* cpu dependant cleanup */
usb_cpu_stop();
#endif
@ -1634,6 +1714,9 @@ int usb_lowlevel_init(void)
ohci_dump (&gohci, 1);
#else
wait_ms(1);
# ifdef S3C24X0_merge
urb_finished = 1;
# endif
#endif
ohci_inited = 1;
return 0;
@ -1649,13 +1732,13 @@ int usb_lowlevel_stop(void)
/* call hc_release_ohci() here ? */
hc_reset (&gohci);
#if CFG_USB_OHCI_BOARD_INIT
#ifdef CFG_USB_OHCI_BOARD_INIT
/* board dependant cleanup */
if(usb_board_stop())
return -1;
#endif
#if CFG_USB_OHCI_CPU_INIT
#ifdef CFG_USB_OHCI_CPU_INIT
/* cpu dependant cleanup */
if(usb_cpu_stop())
return -1;

2
drivers/usb_ohci.h
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@ -11,11 +11,13 @@
#ifdef CFG_USB_BOARD_INIT
extern int usb_board_init(void);
extern int usb_board_stop(void);
extern int usb_cpu_init_fail(void);
#endif
#ifdef CFG_USB_CPU_INIT
extern int usb_cpu_init(void);
extern int usb_cpu_stop(void);
extern int usb_cpu_init_fail(void);
#endif

5
include/configs/trab.h
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@ -84,6 +84,11 @@
#define CONFIG_USB_STORAGE 1
#define CONFIG_DOS_PARTITION 1
#undef CFG_USB_OHCI_BOARD_INIT
#define CFG_USB_OHCI_CPU_INIT 1
#define CFG_USB_OHCI_REGS_BASE S3C24X0_USB_HOST_BASE
#define CFG_USB_OHCI_SLOT_NAME "s3c2400"
/*
* Size of malloc() pool
*/

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