1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
320 lines
8.3 KiB
C
320 lines
8.3 KiB
C
/*
|
|
* linux/drivers/usb/gadget/pxa2xx_udc.h
|
|
* Intel PXA2xx on-chip full speed USB device controller
|
|
*
|
|
* Copyright (C) 2003 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
|
|
* Copyright (C) 2003 David Brownell
|
|
*
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#ifndef __LINUX_USB_GADGET_PXA2XX_H
|
|
#define __LINUX_USB_GADGET_PXA2XX_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
/* pxa2xx has this (move to include/asm-arm/arch-pxa/pxa-regs.h) */
|
|
#define UFNRH_SIR (1 << 7) /* SOF interrupt request */
|
|
#define UFNRH_SIM (1 << 6) /* SOF interrupt mask */
|
|
#define UFNRH_IPE14 (1 << 5) /* ISO packet error, ep14 */
|
|
#define UFNRH_IPE9 (1 << 4) /* ISO packet error, ep9 */
|
|
#define UFNRH_IPE4 (1 << 3) /* ISO packet error, ep4 */
|
|
|
|
/* pxa255 has this (move to include/asm-arm/arch-pxa/pxa-regs.h) */
|
|
#define UDCCFR UDC_RES2 /* UDC Control Function Register */
|
|
#define UDCCFR_AREN (1 << 7) /* ACK response enable (now) */
|
|
#define UDCCFR_ACM (1 << 2) /* ACK control mode (wait for AREN) */
|
|
|
|
/* latest pxa255 errata define new "must be one" bits in UDCCFR */
|
|
#define UDCCFR_MB1 (0xff & ~(UDCCFR_AREN|UDCCFR_ACM))
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
struct pxa2xx_udc;
|
|
|
|
struct pxa2xx_ep {
|
|
struct usb_ep ep;
|
|
struct pxa2xx_udc *dev;
|
|
|
|
const struct usb_endpoint_descriptor *desc;
|
|
struct list_head queue;
|
|
unsigned long pio_irqs;
|
|
unsigned long dma_irqs;
|
|
short dma;
|
|
|
|
unsigned short fifo_size;
|
|
u8 bEndpointAddress;
|
|
u8 bmAttributes;
|
|
|
|
unsigned stopped : 1;
|
|
unsigned dma_fixup : 1;
|
|
|
|
/* UDCCS = UDC Control/Status for this EP
|
|
* UBCR = UDC Byte Count Remaining (contents of OUT fifo)
|
|
* UDDR = UDC Endpoint Data Register (the fifo)
|
|
* DRCM = DMA Request Channel Map
|
|
*/
|
|
volatile u32 *reg_udccs;
|
|
volatile u32 *reg_ubcr;
|
|
volatile u32 *reg_uddr;
|
|
#ifdef USE_DMA
|
|
volatile u32 *reg_drcmr;
|
|
#define drcmr(n) .reg_drcmr = & DRCMR ## n ,
|
|
#else
|
|
#define drcmr(n)
|
|
#endif
|
|
};
|
|
|
|
struct pxa2xx_request {
|
|
struct usb_request req;
|
|
struct list_head queue;
|
|
};
|
|
|
|
enum ep0_state {
|
|
EP0_IDLE,
|
|
EP0_IN_DATA_PHASE,
|
|
EP0_OUT_DATA_PHASE,
|
|
EP0_END_XFER,
|
|
EP0_STALL,
|
|
};
|
|
|
|
#define EP0_FIFO_SIZE ((unsigned)16)
|
|
#define BULK_FIFO_SIZE ((unsigned)64)
|
|
#define ISO_FIFO_SIZE ((unsigned)256)
|
|
#define INT_FIFO_SIZE ((unsigned)8)
|
|
|
|
struct udc_stats {
|
|
struct ep0stats {
|
|
unsigned long ops;
|
|
unsigned long bytes;
|
|
} read, write;
|
|
unsigned long irqs;
|
|
};
|
|
|
|
#ifdef CONFIG_USB_PXA2XX_SMALL
|
|
/* when memory's tight, SMALL config saves code+data. */
|
|
#undef USE_DMA
|
|
#define PXA_UDC_NUM_ENDPOINTS 3
|
|
#endif
|
|
|
|
#ifndef PXA_UDC_NUM_ENDPOINTS
|
|
#define PXA_UDC_NUM_ENDPOINTS 16
|
|
#endif
|
|
|
|
struct pxa2xx_udc {
|
|
struct usb_gadget gadget;
|
|
struct usb_gadget_driver *driver;
|
|
|
|
enum ep0_state ep0state;
|
|
struct udc_stats stats;
|
|
unsigned got_irq : 1,
|
|
vbus : 1,
|
|
pullup : 1,
|
|
has_cfr : 1,
|
|
req_pending : 1,
|
|
req_std : 1,
|
|
req_config : 1;
|
|
|
|
#define start_watchdog(dev) mod_timer(&dev->timer, jiffies + (HZ/200))
|
|
struct timer_list timer;
|
|
|
|
struct device *dev;
|
|
struct pxa2xx_udc_mach_info *mach;
|
|
u64 dma_mask;
|
|
struct pxa2xx_ep ep [PXA_UDC_NUM_ENDPOINTS];
|
|
};
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#ifdef CONFIG_ARCH_LUBBOCK
|
|
#include <asm/arch/lubbock.h>
|
|
/* lubbock can also report usb connect/disconnect irqs */
|
|
|
|
#ifdef DEBUG
|
|
#define HEX_DISPLAY(n) if (machine_is_lubbock()) { LUB_HEXLED = (n); }
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
/* LEDs are only for debug */
|
|
#ifndef HEX_DISPLAY
|
|
#define HEX_DISPLAY(n) do {} while(0)
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
#include <asm/leds.h>
|
|
|
|
#define LED_CONNECTED_ON leds_event(led_green_on)
|
|
#define LED_CONNECTED_OFF do { \
|
|
leds_event(led_green_off); \
|
|
HEX_DISPLAY(0); \
|
|
} while(0)
|
|
#endif
|
|
|
|
#ifndef LED_CONNECTED_ON
|
|
#define LED_CONNECTED_ON do {} while(0)
|
|
#define LED_CONNECTED_OFF do {} while(0)
|
|
#endif
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static struct pxa2xx_udc *the_controller;
|
|
|
|
/* one GPIO should be used to detect host disconnect */
|
|
static inline int is_usb_connected(void)
|
|
{
|
|
if (!the_controller->mach->udc_is_connected)
|
|
return 1;
|
|
return the_controller->mach->udc_is_connected();
|
|
}
|
|
|
|
/* one GPIO should force the host to see this device (or not) */
|
|
static inline void make_usb_disappear(void)
|
|
{
|
|
if (!the_controller->mach->udc_command)
|
|
return;
|
|
the_controller->mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
|
|
}
|
|
|
|
static inline void let_usb_appear(void)
|
|
{
|
|
if (!the_controller->mach->udc_command)
|
|
return;
|
|
the_controller->mach->udc_command(PXA2XX_UDC_CMD_CONNECT);
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
/*
|
|
* Debugging support vanishes in non-debug builds. DBG_NORMAL should be
|
|
* mostly silent during normal use/testing, with no timing side-effects.
|
|
*/
|
|
#define DBG_NORMAL 1 /* error paths, device state transitions */
|
|
#define DBG_VERBOSE 2 /* add some success path trace info */
|
|
#define DBG_NOISY 3 /* ... even more: request level */
|
|
#define DBG_VERY_NOISY 4 /* ... even more: packet level */
|
|
|
|
#ifdef DEBUG
|
|
|
|
static const char *state_name[] = {
|
|
"EP0_IDLE",
|
|
"EP0_IN_DATA_PHASE", "EP0_OUT_DATA_PHASE",
|
|
"EP0_END_XFER", "EP0_STALL"
|
|
};
|
|
|
|
#define DMSG(stuff...) printk(KERN_DEBUG "udc: " stuff)
|
|
|
|
#ifdef VERBOSE
|
|
# define UDC_DEBUG DBG_VERBOSE
|
|
#else
|
|
# define UDC_DEBUG DBG_NORMAL
|
|
#endif
|
|
|
|
static void __attribute__ ((__unused__))
|
|
dump_udccr(const char *label)
|
|
{
|
|
u32 udccr = UDCCR;
|
|
DMSG("%s %02X =%s%s%s%s%s%s%s%s\n",
|
|
label, udccr,
|
|
(udccr & UDCCR_REM) ? " rem" : "",
|
|
(udccr & UDCCR_RSTIR) ? " rstir" : "",
|
|
(udccr & UDCCR_SRM) ? " srm" : "",
|
|
(udccr & UDCCR_SUSIR) ? " susir" : "",
|
|
(udccr & UDCCR_RESIR) ? " resir" : "",
|
|
(udccr & UDCCR_RSM) ? " rsm" : "",
|
|
(udccr & UDCCR_UDA) ? " uda" : "",
|
|
(udccr & UDCCR_UDE) ? " ude" : "");
|
|
}
|
|
|
|
static void __attribute__ ((__unused__))
|
|
dump_udccs0(const char *label)
|
|
{
|
|
u32 udccs0 = UDCCS0;
|
|
|
|
DMSG("%s %s %02X =%s%s%s%s%s%s%s%s\n",
|
|
label, state_name[the_controller->ep0state], udccs0,
|
|
(udccs0 & UDCCS0_SA) ? " sa" : "",
|
|
(udccs0 & UDCCS0_RNE) ? " rne" : "",
|
|
(udccs0 & UDCCS0_FST) ? " fst" : "",
|
|
(udccs0 & UDCCS0_SST) ? " sst" : "",
|
|
(udccs0 & UDCCS0_DRWF) ? " dwrf" : "",
|
|
(udccs0 & UDCCS0_FTF) ? " ftf" : "",
|
|
(udccs0 & UDCCS0_IPR) ? " ipr" : "",
|
|
(udccs0 & UDCCS0_OPR) ? " opr" : "");
|
|
}
|
|
|
|
static void __attribute__ ((__unused__))
|
|
dump_state(struct pxa2xx_udc *dev)
|
|
{
|
|
u32 tmp;
|
|
unsigned i;
|
|
|
|
DMSG("%s %s, uicr %02X.%02X, usir %02X.%02x, ufnr %02X.%02X\n",
|
|
is_usb_connected() ? "host " : "disconnected",
|
|
state_name[dev->ep0state],
|
|
UICR1, UICR0, USIR1, USIR0, UFNRH, UFNRL);
|
|
dump_udccr("udccr");
|
|
if (dev->has_cfr) {
|
|
tmp = UDCCFR;
|
|
DMSG("udccfr %02X =%s%s\n", tmp,
|
|
(tmp & UDCCFR_AREN) ? " aren" : "",
|
|
(tmp & UDCCFR_ACM) ? " acm" : "");
|
|
}
|
|
|
|
if (!dev->driver) {
|
|
DMSG("no gadget driver bound\n");
|
|
return;
|
|
} else
|
|
DMSG("ep0 driver '%s'\n", dev->driver->driver.name);
|
|
|
|
if (!is_usb_connected())
|
|
return;
|
|
|
|
dump_udccs0 ("udccs0");
|
|
DMSG("ep0 IN %lu/%lu, OUT %lu/%lu\n",
|
|
dev->stats.write.bytes, dev->stats.write.ops,
|
|
dev->stats.read.bytes, dev->stats.read.ops);
|
|
|
|
for (i = 1; i < PXA_UDC_NUM_ENDPOINTS; i++) {
|
|
if (dev->ep [i].desc == 0)
|
|
continue;
|
|
DMSG ("udccs%d = %02x\n", i, *dev->ep->reg_udccs);
|
|
}
|
|
}
|
|
|
|
#else
|
|
|
|
#define DMSG(stuff...) do{}while(0)
|
|
|
|
#define dump_udccr(x) do{}while(0)
|
|
#define dump_udccs0(x) do{}while(0)
|
|
#define dump_state(x) do{}while(0)
|
|
|
|
#define UDC_DEBUG ((unsigned)0)
|
|
|
|
#endif
|
|
|
|
#define DBG(lvl, stuff...) do{if ((lvl) <= UDC_DEBUG) DMSG(stuff);}while(0)
|
|
|
|
#define WARN(stuff...) printk(KERN_WARNING "udc: " stuff)
|
|
#define INFO(stuff...) printk(KERN_INFO "udc: " stuff)
|
|
|
|
|
|
#endif /* __LINUX_USB_GADGET_PXA2XX_H */
|