Commit eb81955b authored by Ilya Yanok's avatar Ilya Yanok Committed by Marek Vasut
Browse files

musb-new: port of Linux musb driver



Existing U-Boot musb driver has no support for the new gadget framework
and also seems to have other limitations. As gadget framework is ported
from Linux it seems pretty natural to port musb gadget driver as well.

This driver supports both host and peripheral modes.

This is not a replacement for current musb driver (at least now) as
there are still some consumers of the old UDC interface.

No DMA operation support included, CONFIG_MUSB_PIO_ONLY should be
defined.

Virtual root hub device is not implemented.

Known problems: with no devices connected usb_lowlevel_start() fails.
Signed-off-by: default avatarIlya Yanok <ilya.yanok@cogentembedded.com>
parent c60795f4
......@@ -322,6 +322,7 @@ LIBS-y += drivers/usb/eth/libusb_eth.o
LIBS-y += drivers/usb/gadget/libusb_gadget.o
LIBS-y += drivers/usb/host/libusb_host.o
LIBS-y += drivers/usb/musb/libusb_musb.o
LIBS-y += drivers/usb/musb-new/libusb_musb-new.o
LIBS-y += drivers/usb/phy/libusb_phy.o
LIBS-y += drivers/usb/ulpi/libusb_ulpi.o
LIBS-y += drivers/video/libvideo.o
......
......@@ -125,8 +125,8 @@
#endif
/* Mentor high speed "dual role" controller, in peripheral role */
#ifdef CONFIG_USB_GADGET_MUSB_HDRC
#define gadget_is_musbhdrc(g) (!strcmp("musb_hdrc", (g)->name))
#ifdef CONFIG_MUSB_GADGET
#define gadget_is_musbhdrc(g) (!strcmp("musb-hdrc", (g)->name))
#else
#define gadget_is_musbhdrc(g) 0
#endif
......
#
# for USB OTG silicon based on Mentor Graphics INVENTRA designs
#
include $(TOPDIR)/config.mk
LIB := $(obj)libusb_musb-new.o
COBJS-$(CONFIG_MUSB_GADGET) += musb_gadget.o musb_gadget_ep0.o musb_core.o
COBJS-$(CONFIG_MUSB_GADGET) += musb_uboot.o
COBJS-$(CONFIG_MUSB_HOST) += musb_host.o musb_core.o musb_uboot.o
CFLAGS_NO_WARN := $(call cc-option,-Wno-unused-variable) \
$(call cc-option,-Wno-unused-but-set-variable) \
$(call cc-option,-Wno-unused-label)
CFLAGS += $(CFLAGS_NO_WARN)
COBJS := $(sort $(COBJS-y))
SRCS := $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
all: $(LIB)
#$(LIB): $(OBJS)
$(LIB): $(obj).depend $(OBJS)
$(call cmd_link_o_target, $(OBJS))
#########################################################################
# defines $(obj).depend target
include $(SRCTREE)/rules.mk
sinclude $(obj).depend
#########################################################################
#ifndef __LINUX_COMPAT_H__
#define __LINUX_COMPAT_H__
#include <malloc.h>
#include <linux/list.h>
#include <linux/compat.h>
#define __init
#define __devinit
#define __devinitdata
#define __devinitconst
#define __iomem
#define __deprecated
typedef enum { false = 0, true = 1 } bool;
struct unused {};
typedef struct unused unused_t;
typedef int irqreturn_t;
typedef unused_t spinlock_t;
struct work_struct {};
struct timer_list {};
struct notifier_block {};
typedef unsigned long dmaaddr_t;
#define spin_lock_init(lock) do {} while (0)
#define spin_lock(lock) do {} while (0)
#define spin_unlock(lock) do {} while (0)
#define spin_lock_irqsave(lock, flags) do {} while (0)
#define spin_unlock_irqrestore(lock, flags) do {} while (0)
#define setup_timer(timer, func, data) do {} while (0)
#define schedule_work(work) do {} while (0)
#define INIT_WORK(work, fun) do {} while (0)
#define cpu_relax() do {} while (0)
#define pr_debug(fmt, args...) debug(fmt, ##args)
#define dev_dbg(dev, fmt, args...) \
debug(fmt, ##args)
#define dev_vdbg(dev, fmt, args...) \
debug(fmt, ##args)
#define dev_info(dev, fmt, args...) \
printf(fmt, ##args)
#define dev_err(dev, fmt, args...) \
printf(fmt, ##args)
#define printk printf
#define WARN(condition, fmt, args...) ({ \
int ret_warn = !!condition; \
if (ret_warn) \
printf(fmt, ##args); \
ret_warn; })
#define KERN_DEBUG
#define KERN_NOTICE
#define KERN_WARNING
#define KERN_ERR
#define kfree(ptr) free(ptr)
#define pm_runtime_get_sync(dev) do {} while (0)
#define pm_runtime_put(dev) do {} while (0)
#define pm_runtime_put_sync(dev) do {} while (0)
#define pm_runtime_use_autosuspend(dev) do {} while (0)
#define pm_runtime_set_autosuspend_delay(dev, delay) do {} while (0)
#define pm_runtime_enable(dev) do {} while (0)
#define MODULE_DESCRIPTION(desc)
#define MODULE_AUTHOR(author)
#define MODULE_LICENSE(license)
#define MODULE_ALIAS(alias)
#define module_param(name, type, perm)
#define MODULE_PARM_DESC(name, desc)
#define EXPORT_SYMBOL_GPL(name)
#define writesl(a, d, s) __raw_writesl((unsigned long)a, d, s)
#define readsl(a, d, s) __raw_readsl((unsigned long)a, d, s)
#define writesw(a, d, s) __raw_writesw((unsigned long)a, d, s)
#define readsw(a, d, s) __raw_readsw((unsigned long)a, d, s)
#define writesb(a, d, s) __raw_writesb((unsigned long)a, d, s)
#define readsb(a, d, s) __raw_readsb((unsigned long)a, d, s)
#define IRQ_NONE 0
#define IRQ_HANDLED 0
#define dev_set_drvdata(dev, data) do {} while (0)
#define disable_irq_wake(irq) do {} while (0)
#define enable_irq_wake(irq) -EINVAL
#define free_irq(irq, data) do {} while (0)
#define request_irq(nr, f, flags, nm, data) 0
#define device_init_wakeup(dev, a) do {} while (0)
#define platform_data device_data
#ifndef wmb
#define wmb() asm volatile ("" : : : "memory")
#endif
#endif /* __LINUX_COMPAT_H__ */
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/*
* MUSB OTG driver defines
*
* Copyright 2005 Mentor Graphics Corporation
* Copyright (C) 2005-2006 by Texas Instruments
* Copyright (C) 2006-2007 Nokia Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __MUSB_CORE_H__
#define __MUSB_CORE_H__
#ifndef __UBOOT__
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/timer.h>
#include <linux/device.h>
#include <linux/usb.h>
#include <linux/usb/otg.h>
#else
#include <asm/errno.h>
#endif
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/musb.h>
struct musb;
struct musb_hw_ep;
struct musb_ep;
/* Helper defines for struct musb->hwvers */
#define MUSB_HWVERS_MAJOR(x) ((x >> 10) & 0x1f)
#define MUSB_HWVERS_MINOR(x) (x & 0x3ff)
#define MUSB_HWVERS_RC 0x8000
#define MUSB_HWVERS_1300 0x52C
#define MUSB_HWVERS_1400 0x590
#define MUSB_HWVERS_1800 0x720
#define MUSB_HWVERS_1900 0x784
#define MUSB_HWVERS_2000 0x800
#include "musb_debug.h"
#include "musb_dma.h"
#include "musb_io.h"
#include "musb_regs.h"
#include "musb_gadget.h"
#ifndef __UBOOT__
#include <linux/usb/hcd.h>
#endif
#include "musb_host.h"
#define is_peripheral_enabled(musb) ((musb)->board_mode != MUSB_HOST)
#define is_host_enabled(musb) ((musb)->board_mode != MUSB_PERIPHERAL)
#define is_otg_enabled(musb) ((musb)->board_mode == MUSB_OTG)
/* NOTE: otg and peripheral-only state machines start at B_IDLE.
* OTG or host-only go to A_IDLE when ID is sensed.
*/
#define is_peripheral_active(m) (!(m)->is_host)
#define is_host_active(m) ((m)->is_host)
#ifdef CONFIG_PROC_FS
#include <linux/fs.h>
#define MUSB_CONFIG_PROC_FS
#endif
/****************************** PERIPHERAL ROLE *****************************/
#ifndef __UBOOT__
#define is_peripheral_capable() (1)
#else
#ifdef CONFIG_MUSB_GADGET
#define is_peripheral_capable() (1)
#else
#define is_peripheral_capable() (0)
#endif
#endif
extern irqreturn_t musb_g_ep0_irq(struct musb *);
extern void musb_g_tx(struct musb *, u8);
extern void musb_g_rx(struct musb *, u8);
extern void musb_g_reset(struct musb *);
extern void musb_g_suspend(struct musb *);
extern void musb_g_resume(struct musb *);
extern void musb_g_wakeup(struct musb *);
extern void musb_g_disconnect(struct musb *);
/****************************** HOST ROLE ***********************************/
#ifndef __UBOOT__
#define is_host_capable() (1)
#else
#ifdef CONFIG_MUSB_HOST
#define is_host_capable() (1)
#else
#define is_host_capable() (0)
#endif
#endif
extern irqreturn_t musb_h_ep0_irq(struct musb *);
extern void musb_host_tx(struct musb *, u8);
extern void musb_host_rx(struct musb *, u8);
/****************************** CONSTANTS ********************************/
#ifndef MUSB_C_NUM_EPS
#define MUSB_C_NUM_EPS ((u8)16)
#endif
#ifndef MUSB_MAX_END0_PACKET
#define MUSB_MAX_END0_PACKET ((u16)MUSB_EP0_FIFOSIZE)
#endif
/* host side ep0 states */
enum musb_h_ep0_state {
MUSB_EP0_IDLE,
MUSB_EP0_START, /* expect ack of setup */
MUSB_EP0_IN, /* expect IN DATA */
MUSB_EP0_OUT, /* expect ack of OUT DATA */
MUSB_EP0_STATUS, /* expect ack of STATUS */
} __attribute__ ((packed));
/* peripheral side ep0 states */
enum musb_g_ep0_state {
MUSB_EP0_STAGE_IDLE, /* idle, waiting for SETUP */
MUSB_EP0_STAGE_SETUP, /* received SETUP */
MUSB_EP0_STAGE_TX, /* IN data */
MUSB_EP0_STAGE_RX, /* OUT data */
MUSB_EP0_STAGE_STATUSIN, /* (after OUT data) */
MUSB_EP0_STAGE_STATUSOUT, /* (after IN data) */
MUSB_EP0_STAGE_ACKWAIT, /* after zlp, before statusin */
} __attribute__ ((packed));
/*
* OTG protocol constants. See USB OTG 1.3 spec,
* sections 5.5 "Device Timings" and 6.6.5 "Timers".
*/
#define OTG_TIME_A_WAIT_VRISE 100 /* msec (max) */
#define OTG_TIME_A_WAIT_BCON 1100 /* min 1 second */
#define OTG_TIME_A_AIDL_BDIS 200 /* min 200 msec */
#define OTG_TIME_B_ASE0_BRST 100 /* min 3.125 ms */
/*************************** REGISTER ACCESS ********************************/
/* Endpoint registers (other than dynfifo setup) can be accessed either
* directly with the "flat" model, or after setting up an index register.
*/
#if defined(CONFIG_ARCH_DAVINCI) || defined(CONFIG_SOC_OMAP2430) \
|| defined(CONFIG_SOC_OMAP3430) || defined(CONFIG_BLACKFIN) \
|| defined(CONFIG_ARCH_OMAP4)
/* REVISIT indexed access seemed to
* misbehave (on DaVinci) for at least peripheral IN ...
*/
#define MUSB_FLAT_REG
#endif
/* TUSB mapping: "flat" plus ep0 special cases */
#if defined(CONFIG_USB_MUSB_TUSB6010) || \
defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
#define musb_ep_select(_mbase, _epnum) \
musb_writeb((_mbase), MUSB_INDEX, (_epnum))
#define MUSB_EP_OFFSET MUSB_TUSB_OFFSET
/* "flat" mapping: each endpoint has its own i/o address */
#elif defined(MUSB_FLAT_REG)
#define musb_ep_select(_mbase, _epnum) (((void)(_mbase)), ((void)(_epnum)))
#define MUSB_EP_OFFSET MUSB_FLAT_OFFSET
/* "indexed" mapping: INDEX register controls register bank select */
#else
#define musb_ep_select(_mbase, _epnum) \
musb_writeb((_mbase), MUSB_INDEX, (_epnum))
#define MUSB_EP_OFFSET MUSB_INDEXED_OFFSET
#endif
/****************************** FUNCTIONS ********************************/
#define MUSB_HST_MODE(_musb)\
{ (_musb)->is_host = true; }
#define MUSB_DEV_MODE(_musb) \
{ (_musb)->is_host = false; }
#define test_devctl_hst_mode(_x) \
(musb_readb((_x)->mregs, MUSB_DEVCTL)&MUSB_DEVCTL_HM)
#define MUSB_MODE(musb) ((musb)->is_host ? "Host" : "Peripheral")
/******************************** TYPES *************************************/
/**
* struct musb_platform_ops - Operations passed to musb_core by HW glue layer
* @init: turns on clocks, sets up platform-specific registers, etc
* @exit: undoes @init
* @set_mode: forcefully changes operating mode
* @try_ilde: tries to idle the IP
* @vbus_status: returns vbus status if possible
* @set_vbus: forces vbus status
* @adjust_channel_params: pre check for standard dma channel_program func
*/
struct musb_platform_ops {
int (*init)(struct musb *musb);
int (*exit)(struct musb *musb);
void (*enable)(struct musb *musb);
void (*disable)(struct musb *musb);
int (*set_mode)(struct musb *musb, u8 mode);
void (*try_idle)(struct musb *musb, unsigned long timeout);
int (*vbus_status)(struct musb *musb);
void (*set_vbus)(struct musb *musb, int on);
int (*adjust_channel_params)(struct dma_channel *channel,
u16 packet_sz, u8 *mode,
dma_addr_t *dma_addr, u32 *len);
};
/*
* struct musb_hw_ep - endpoint hardware (bidirectional)
*
* Ordered slightly for better cacheline locality.
*/
struct musb_hw_ep {
struct musb *musb;
void __iomem *fifo;
void __iomem *regs;
#if defined(CONFIG_USB_MUSB_TUSB6010) || \
defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
void __iomem *conf;
#endif
/* index in musb->endpoints[] */
u8 epnum;
/* hardware configuration, possibly dynamic */
bool is_shared_fifo;
bool tx_double_buffered;
bool rx_double_buffered;
u16 max_packet_sz_tx;
u16 max_packet_sz_rx;
struct dma_channel *tx_channel;
struct dma_channel *rx_channel;
#if defined(CONFIG_USB_MUSB_TUSB6010) || \
defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
/* TUSB has "asynchronous" and "synchronous" dma modes */
dma_addr_t fifo_async;
dma_addr_t fifo_sync;
void __iomem *fifo_sync_va;
#endif
void __iomem *target_regs;
/* currently scheduled peripheral endpoint */
struct musb_qh *in_qh;
struct musb_qh *out_qh;
u8 rx_reinit;
u8 tx_reinit;
/* peripheral side */
struct musb_ep ep_in; /* TX */
struct musb_ep ep_out; /* RX */
};
static inline struct musb_request *next_in_request(struct musb_hw_ep *hw_ep)
{
return next_request(&hw_ep->ep_in);
}
static inline struct musb_request *next_out_request(struct musb_hw_ep *hw_ep)
{
return next_request(&hw_ep->ep_out);
}
struct musb_csr_regs {
/* FIFO registers */
u16 txmaxp, txcsr, rxmaxp, rxcsr;
u16 rxfifoadd, txfifoadd;
u8 txtype, txinterval, rxtype, rxinterval;
u8 rxfifosz, txfifosz;
u8 txfunaddr, txhubaddr, txhubport;
u8 rxfunaddr, rxhubaddr, rxhubport;
};
struct musb_context_registers {
u8 power;
u16 intrtxe, intrrxe;
u8 intrusbe;
u16 frame;
u8 index, testmode;
u8 devctl, busctl, misc;
u32 otg_interfsel;
struct musb_csr_regs index_regs[MUSB_C_NUM_EPS];
};
/*
* struct musb - Driver instance data.
*/
struct musb {
/* device lock */
spinlock_t lock;
const struct musb_platform_ops *ops;
struct musb_context_registers context;
irqreturn_t (*isr)(int, void *);
struct work_struct irq_work;
u16 hwvers;
/* this hub status bit is reserved by USB 2.0 and not seen by usbcore */
#define MUSB_PORT_STAT_RESUME (1 << 31)
u32 port1_status;
unsigned long rh_timer;
enum musb_h_ep0_state ep0_stage;
/* bulk traffic normally dedicates endpoint hardware, and each
* direction has its own ring of host side endpoints.
* we try to progress the transfer at the head of each endpoint's
* queue until it completes or NAKs too much; then we try the next
* endpoint.
*/
struct musb_hw_ep *bulk_ep;
struct list_head control; /* of musb_qh */
struct list_head in_bulk; /* of musb_qh */
struct list_head out_bulk; /* of musb_qh */
struct timer_list otg_timer;
struct notifier_block nb;
struct dma_controller *dma_controller;
struct device *controller;
void __iomem *ctrl_base;
void __iomem *mregs;
#if defined(CONFIG_USB_MUSB_TUSB6010) || \
defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
dma_addr_t async;
dma_addr_t sync;
void __iomem *sync_va;
#endif
/* passed down from chip/board specific irq handlers */
u8 int_usb;
u16 int_rx;
u16 int_tx;
struct usb_phy *xceiv;
int nIrq;
unsigned irq_wake:1;
struct musb_hw_ep endpoints[MUSB_C_NUM_EPS];
#define control_ep endpoints
#define VBUSERR_RETRY_COUNT 3
u16 vbuserr_retry;
u16 epmask;
u8 nr_endpoints;
u8 board_mode; /* enum musb_mode */
int (*board_set_power)(int state);
u8 min_power; /* vbus for periph, in mA/2 */
bool is_host;
int a_wait_bcon; /* VBUS timeout in msecs */
unsigned long idle_timeout; /* Next timeout in jiffies */
/* active means connected and not suspended */
unsigned is_active:1;
unsigned is_multipoint:1;
unsigned ignore_disconnect:1; /* during bus resets */
unsigned hb_iso_rx:1; /* high bandwidth iso rx? */
unsigned hb_iso_tx:1; /* high bandwidth iso tx? */
unsigned dyn_fifo:1; /* dynamic FIFO supported? */
unsigned bulk_split:1;
#define can_bulk_split(musb,type) \
(((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_split)
unsigned bulk_combine:1;
#define can_bulk_combine(musb,type) \
(((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_combine)
/* is_suspended means USB B_PERIPHERAL suspend */
unsigned is_suspended:1;
/* may_wakeup means remote wakeup is enabled */
unsigned may_wakeup:1;
/* is_self_powered is reported in device status and the
* config descriptor. is_bus_powered means B_PERIPHERAL
* draws some VBUS current; both can be true.
*/
unsigned is_self_powered:1;
unsigned is_bus_powered:1;
unsigned set_address:1;
unsigned test_mode:1;
unsigned softconnect:1;
u8 address;
u8 test_mode_nr;
u16 ackpend; /* ep0 */
enum musb_g_ep0_state ep0_state;
struct usb_gadget g; /* the gadget */
struct usb_gadget_driver *gadget_driver; /* its driver */
/*
* FIXME: Remove this flag.
*
* This is only added to allow Blackfin to work
* with current driver. For some unknown reason
* Blackfin doesn't work with double buffering
* and that's enabled by default.
*
* We added this flag to forcefully disable double
* buffering until we get it working.
*/
<