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/*

 * Texas Instruments TUSB6010 emulation.

 * Based on reverse-engineering of a linux driver.

 *

 * Copyright (C) 2008 Nokia Corporation

 * Written by Andrzej Zaborowski <andrew@openedhand.com>

 *

 * 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 or

 * (at your option) version 3 of the License.

 *

 * 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, see <http://www.gnu.org/licenses/>.

 */

#include "qemu-common.h"

#include "qemu/timer.h"

#include "hw/usb.h"

#include "hw/arm/omap.h"

#include "hw/irq.h"

#include "hw/arm/devices.h"

#include "hw/sysbus.h"

typedef struct TUSBState {

    SysBusDevice busdev;

    MemoryRegion iomem[2];

    qemu_irq irq;

    MUSBState *musb;

    QEMUTimer *otg_timer;

    QEMUTimer *pwr_timer;

    int power;

    uint32_t scratch;

    uint16_t test_reset;

    uint32_t prcm_config;

    uint32_t prcm_mngmt;

    uint16_t otg_status;

    uint32_t dev_config;

    int host_mode;

    uint32_t intr;

    uint32_t intr_ok;

    uint32_t mask;

    uint32_t usbip_intr;

    uint32_t usbip_mask;

    uint32_t gpio_intr;

    uint32_t gpio_mask;

    uint32_t gpio_config;

    uint32_t dma_intr;

    uint32_t dma_mask;

    uint32_t dma_map;

    uint32_t dma_config;

    uint32_t ep0_config;

    uint32_t rx_config[15];

    uint32_t tx_config[15];

    uint32_t wkup_mask;

    uint32_t pullup[2];

    uint32_t control_config;

    uint32_t otg_timer_val;

} TUSBState;

#define TUSB_DEVCLOCK                        60000000        /* 60 MHz */

#define TUSB_VLYNQ_CTRL                        0x004

/* Mentor Graphics OTG core registers.  */

#define TUSB_BASE_OFFSET                0x400

/* FIFO registers, 32-bit.  */

#define TUSB_FIFO_BASE                        0x600

/* Device System & Control registers, 32-bit.  */

#define TUSB_SYS_REG_BASE                0x800

#define TUSB_DEV_CONF                        (TUSB_SYS_REG_BASE + 0x000)

#define        TUSB_DEV_CONF_USB_HOST_MODE        (1 << 16)

#define        TUSB_DEV_CONF_PROD_TEST_MODE        (1 << 15)

#define        TUSB_DEV_CONF_SOFT_ID                (1 << 1)

#define        TUSB_DEV_CONF_ID_SEL                (1 << 0)

#define TUSB_PHY_OTG_CTRL_ENABLE        (TUSB_SYS_REG_BASE + 0x004)

#define TUSB_PHY_OTG_CTRL                (TUSB_SYS_REG_BASE + 0x008)

#define        TUSB_PHY_OTG_CTRL_WRPROTECT        (0xa5 << 24)

#define        TUSB_PHY_OTG_CTRL_O_ID_PULLUP        (1 << 23)

#define        TUSB_PHY_OTG_CTRL_O_VBUS_DET_EN        (1 << 19)

#define        TUSB_PHY_OTG_CTRL_O_SESS_END_EN        (1 << 18)

#define        TUSB_PHY_OTG_CTRL_TESTM2        (1 << 17)

#define        TUSB_PHY_OTG_CTRL_TESTM1        (1 << 16)

#define        TUSB_PHY_OTG_CTRL_TESTM0        (1 << 15)

#define        TUSB_PHY_OTG_CTRL_TX_DATA2        (1 << 14)

#define        TUSB_PHY_OTG_CTRL_TX_GZ2        (1 << 13)

#define        TUSB_PHY_OTG_CTRL_TX_ENABLE2        (1 << 12)

#define        TUSB_PHY_OTG_CTRL_DM_PULLDOWN        (1 << 11)

#define        TUSB_PHY_OTG_CTRL_DP_PULLDOWN        (1 << 10)

#define        TUSB_PHY_OTG_CTRL_OSC_EN        (1 << 9)

#define        TUSB_PHY_OTG_CTRL_PHYREF_CLK(v)        (((v) & 3) << 7)

#define        TUSB_PHY_OTG_CTRL_PD                (1 << 6)

#define        TUSB_PHY_OTG_CTRL_PLL_ON        (1 << 5)

#define        TUSB_PHY_OTG_CTRL_EXT_RPU        (1 << 4)

#define        TUSB_PHY_OTG_CTRL_PWR_GOOD        (1 << 3)

#define        TUSB_PHY_OTG_CTRL_RESET                (1 << 2)

#define        TUSB_PHY_OTG_CTRL_SUSPENDM        (1 << 1)

#define        TUSB_PHY_OTG_CTRL_CLK_MODE        (1 << 0)

/* OTG status register */

#define TUSB_DEV_OTG_STAT                (TUSB_SYS_REG_BASE + 0x00c)

#define        TUSB_DEV_OTG_STAT_PWR_CLK_GOOD        (1 << 8)

#define        TUSB_DEV_OTG_STAT_SESS_END        (1 << 7)

#define        TUSB_DEV_OTG_STAT_SESS_VALID        (1 << 6)

#define        TUSB_DEV_OTG_STAT_VBUS_VALID        (1 << 5)

#define        TUSB_DEV_OTG_STAT_VBUS_SENSE        (1 << 4)

#define        TUSB_DEV_OTG_STAT_ID_STATUS        (1 << 3)

#define        TUSB_DEV_OTG_STAT_HOST_DISCON        (1 << 2)

#define        TUSB_DEV_OTG_STAT_LINE_STATE        (3 << 0)

#define        TUSB_DEV_OTG_STAT_DP_ENABLE        (1 << 1)

#define        TUSB_DEV_OTG_STAT_DM_ENABLE        (1 << 0)

#define TUSB_DEV_OTG_TIMER                (TUSB_SYS_REG_BASE + 0x010)

#define TUSB_DEV_OTG_TIMER_ENABLE        (1 << 31)

#define TUSB_DEV_OTG_TIMER_VAL(v)        ((v) & 0x07ffffff)

#define TUSB_PRCM_REV                        (TUSB_SYS_REG_BASE + 0x014)

/* PRCM configuration register */

#define TUSB_PRCM_CONF                        (TUSB_SYS_REG_BASE + 0x018)

#define        TUSB_PRCM_CONF_SFW_CPEN                (1 << 24)

#define        TUSB_PRCM_CONF_SYS_CLKSEL(v)        (((v) & 3) << 16)

/* PRCM management register */

#define TUSB_PRCM_MNGMT                        (TUSB_SYS_REG_BASE + 0x01c)

#define        TUSB_PRCM_MNGMT_SRP_FIX_TMR(v)        (((v) & 0xf) << 25)

#define        TUSB_PRCM_MNGMT_SRP_FIX_EN        (1 << 24)

#define        TUSB_PRCM_MNGMT_VBUS_VAL_TMR(v)        (((v) & 0xf) << 20)

#define        TUSB_PRCM_MNGMT_VBUS_VAL_FLT_EN        (1 << 19)

#define        TUSB_PRCM_MNGMT_DFT_CLK_DIS        (1 << 18)

#define        TUSB_PRCM_MNGMT_VLYNQ_CLK_DIS        (1 << 17)

#define        TUSB_PRCM_MNGMT_OTG_SESS_END_EN        (1 << 10)

#define        TUSB_PRCM_MNGMT_OTG_VBUS_DET_EN        (1 << 9)

#define        TUSB_PRCM_MNGMT_OTG_ID_PULLUP        (1 << 8)

#define        TUSB_PRCM_MNGMT_15_SW_EN        (1 << 4)

#define        TUSB_PRCM_MNGMT_33_SW_EN        (1 << 3)

#define        TUSB_PRCM_MNGMT_5V_CPEN                (1 << 2)

#define        TUSB_PRCM_MNGMT_PM_IDLE                (1 << 1)

#define        TUSB_PRCM_MNGMT_DEV_IDLE        (1 << 0)

/* Wake-up source clear and mask registers */

#define TUSB_PRCM_WAKEUP_SOURCE                (TUSB_SYS_REG_BASE + 0x020)

#define TUSB_PRCM_WAKEUP_CLEAR                (TUSB_SYS_REG_BASE + 0x028)

#define TUSB_PRCM_WAKEUP_MASK                (TUSB_SYS_REG_BASE + 0x02c)

#define        TUSB_PRCM_WAKEUP_RESERVED_BITS        (0xffffe << 13)

#define        TUSB_PRCM_WGPIO_7                (1 << 12)

#define        TUSB_PRCM_WGPIO_6                (1 << 11)

#define        TUSB_PRCM_WGPIO_5                (1 << 10)

#define        TUSB_PRCM_WGPIO_4                (1 << 9)

#define        TUSB_PRCM_WGPIO_3                (1 << 8)

#define        TUSB_PRCM_WGPIO_2                (1 << 7)

#define        TUSB_PRCM_WGPIO_1                (1 << 6)

#define        TUSB_PRCM_WGPIO_0                (1 << 5)

#define        TUSB_PRCM_WHOSTDISCON                (1 << 4)        /* Host disconnect */

#define        TUSB_PRCM_WBUS                        (1 << 3)        /* USB bus resume */

#define        TUSB_PRCM_WNORCS                (1 << 2)        /* NOR chip select */

#define        TUSB_PRCM_WVBUS                        (1 << 1)        /* OTG PHY VBUS */

#define        TUSB_PRCM_WID                        (1 << 0)        /* OTG PHY ID detect */

#define TUSB_PULLUP_1_CTRL                (TUSB_SYS_REG_BASE + 0x030)

#define TUSB_PULLUP_2_CTRL                (TUSB_SYS_REG_BASE + 0x034)

#define TUSB_INT_CTRL_REV                (TUSB_SYS_REG_BASE + 0x038)

#define TUSB_INT_CTRL_CONF                (TUSB_SYS_REG_BASE + 0x03c)

#define TUSB_USBIP_INT_SRC                (TUSB_SYS_REG_BASE + 0x040)

#define TUSB_USBIP_INT_SET                (TUSB_SYS_REG_BASE + 0x044)

#define TUSB_USBIP_INT_CLEAR                (TUSB_SYS_REG_BASE + 0x048)

#define TUSB_USBIP_INT_MASK                (TUSB_SYS_REG_BASE + 0x04c)

#define TUSB_DMA_INT_SRC                (TUSB_SYS_REG_BASE + 0x050)

#define TUSB_DMA_INT_SET                (TUSB_SYS_REG_BASE + 0x054)

#define TUSB_DMA_INT_CLEAR                (TUSB_SYS_REG_BASE + 0x058)

#define TUSB_DMA_INT_MASK                (TUSB_SYS_REG_BASE + 0x05c)

#define TUSB_GPIO_INT_SRC                (TUSB_SYS_REG_BASE + 0x060)

#define TUSB_GPIO_INT_SET                (TUSB_SYS_REG_BASE + 0x064)

#define TUSB_GPIO_INT_CLEAR                (TUSB_SYS_REG_BASE + 0x068)

#define TUSB_GPIO_INT_MASK                (TUSB_SYS_REG_BASE + 0x06c)

/* NOR flash interrupt source registers */

#define TUSB_INT_SRC                        (TUSB_SYS_REG_BASE + 0x070)

#define TUSB_INT_SRC_SET                (TUSB_SYS_REG_BASE + 0x074)

#define TUSB_INT_SRC_CLEAR                (TUSB_SYS_REG_BASE + 0x078)

#define TUSB_INT_MASK                        (TUSB_SYS_REG_BASE + 0x07c)

#define        TUSB_INT_SRC_TXRX_DMA_DONE        (1 << 24)

#define        TUSB_INT_SRC_USB_IP_CORE        (1 << 17)

#define        TUSB_INT_SRC_OTG_TIMEOUT        (1 << 16)

#define        TUSB_INT_SRC_VBUS_SENSE_CHNG        (1 << 15)

#define        TUSB_INT_SRC_ID_STATUS_CHNG        (1 << 14)

#define        TUSB_INT_SRC_DEV_WAKEUP                (1 << 13)

#define        TUSB_INT_SRC_DEV_READY                (1 << 12)

#define        TUSB_INT_SRC_USB_IP_TX                (1 << 9)

#define        TUSB_INT_SRC_USB_IP_RX                (1 << 8)

#define        TUSB_INT_SRC_USB_IP_VBUS_ERR        (1 << 7)

#define        TUSB_INT_SRC_USB_IP_VBUS_REQ        (1 << 6)

#define        TUSB_INT_SRC_USB_IP_DISCON        (1 << 5)

#define        TUSB_INT_SRC_USB_IP_CONN        (1 << 4)

#define        TUSB_INT_SRC_USB_IP_SOF                (1 << 3)

#define        TUSB_INT_SRC_USB_IP_RST_BABBLE        (1 << 2)

#define        TUSB_INT_SRC_USB_IP_RESUME        (1 << 1)

#define        TUSB_INT_SRC_USB_IP_SUSPEND        (1 << 0)

#define TUSB_GPIO_REV                        (TUSB_SYS_REG_BASE + 0x080)

#define TUSB_GPIO_CONF                        (TUSB_SYS_REG_BASE + 0x084)

#define TUSB_DMA_CTRL_REV                (TUSB_SYS_REG_BASE + 0x100)

#define TUSB_DMA_REQ_CONF                (TUSB_SYS_REG_BASE + 0x104)

#define TUSB_EP0_CONF                        (TUSB_SYS_REG_BASE + 0x108)

#define TUSB_EP_IN_SIZE                        (TUSB_SYS_REG_BASE + 0x10c)

#define TUSB_DMA_EP_MAP                        (TUSB_SYS_REG_BASE + 0x148)

#define TUSB_EP_OUT_SIZE                (TUSB_SYS_REG_BASE + 0x14c)

#define TUSB_EP_MAX_PACKET_SIZE_OFFSET        (TUSB_SYS_REG_BASE + 0x188)

#define TUSB_SCRATCH_PAD                (TUSB_SYS_REG_BASE + 0x1c4)

#define TUSB_WAIT_COUNT                        (TUSB_SYS_REG_BASE + 0x1c8)

#define TUSB_PROD_TEST_RESET                (TUSB_SYS_REG_BASE + 0x1d8)

#define TUSB_DIDR1_LO                        (TUSB_SYS_REG_BASE + 0x1f8)

#define TUSB_DIDR1_HI                        (TUSB_SYS_REG_BASE + 0x1fc)

/* Device System & Control register bitfields */

#define TUSB_INT_CTRL_CONF_INT_RLCYC(v)        (((v) & 0x7) << 18)

#define TUSB_INT_CTRL_CONF_INT_POLARITY        (1 << 17)

#define TUSB_INT_CTRL_CONF_INT_MODE        (1 << 16)

#define TUSB_GPIO_CONF_DMAREQ(v)        (((v) & 0x3f) << 24)

#define TUSB_DMA_REQ_CONF_BURST_SIZE(v)        (((v) & 3) << 26)

#define TUSB_DMA_REQ_CONF_DMA_RQ_EN(v)        (((v) & 0x3f) << 20)

#define TUSB_DMA_REQ_CONF_DMA_RQ_ASR(v)        (((v) & 0xf) << 16)

#define TUSB_EP0_CONFIG_SW_EN                (1 << 8)

#define TUSB_EP0_CONFIG_DIR_TX                (1 << 7)

#define TUSB_EP0_CONFIG_XFR_SIZE(v)        ((v) & 0x7f)

#define TUSB_EP_CONFIG_SW_EN                (1 << 31)

#define TUSB_EP_CONFIG_XFR_SIZE(v)        ((v) & 0x7fffffff)

#define TUSB_PROD_TEST_RESET_VAL        0xa596

static void tusb_intr_update(TUSBState *s)

{

    if (s->control_config & TUSB_INT_CTRL_CONF_INT_POLARITY)

        qemu_set_irq(s->irq, s->intr & ~s->mask & s->intr_ok);

    else

        qemu_set_irq(s->irq, (!(s->intr & ~s->mask)) & s->intr_ok);

}

static void tusb_usbip_intr_update(TUSBState *s)

{

    /* TX interrupt in the MUSB */

    if (s->usbip_intr & 0x0000ffff & ~s->usbip_mask)

        s->intr |= TUSB_INT_SRC_USB_IP_TX;

    else

        s->intr &= ~TUSB_INT_SRC_USB_IP_TX;

    /* RX interrupt in the MUSB */

    if (s->usbip_intr & 0xffff0000 & ~s->usbip_mask)

        s->intr |= TUSB_INT_SRC_USB_IP_RX;

    else

        s->intr &= ~TUSB_INT_SRC_USB_IP_RX;

    /* XXX: What about TUSB_INT_SRC_USB_IP_CORE?  */

    tusb_intr_update(s);

}

static void tusb_dma_intr_update(TUSBState *s)

{

    if (s->dma_intr & ~s->dma_mask)

        s->intr |= TUSB_INT_SRC_TXRX_DMA_DONE;

    else

        s->intr &= ~TUSB_INT_SRC_TXRX_DMA_DONE;

    tusb_intr_update(s);

}

static void tusb_gpio_intr_update(TUSBState *s)

{

    /* TODO: How is this signalled?  */

}

extern CPUReadMemoryFunc * const musb_read[];

extern CPUWriteMemoryFunc * const musb_write[];

static uint32_t tusb_async_readb(void *opaque, hwaddr addr)

{

    TUSBState *s = (TUSBState *) opaque;

    switch (addr & 0xfff) {

    case TUSB_BASE_OFFSET ... (TUSB_BASE_OFFSET | 0x1ff):

        return musb_read[0](s->musb, addr & 0x1ff);

    case TUSB_FIFO_BASE ... (TUSB_FIFO_BASE | 0x1ff):

        return musb_read[0](s->musb, 0x20 + ((addr >> 3) & 0x3c));

    }

    printf("%s: unknown register at %03x\n",

                    __FUNCTION__, (int) (addr & 0xfff));

    return 0;

}

static uint32_t tusb_async_readh(void *opaque, hwaddr addr)

{

    TUSBState *s = (TUSBState *) opaque;

    switch (addr & 0xfff) {

    case TUSB_BASE_OFFSET ... (TUSB_BASE_OFFSET | 0x1ff):

        return musb_read[1](s->musb, addr & 0x1ff);

    case TUSB_FIFO_BASE ... (TUSB_FIFO_BASE | 0x1ff):

        return musb_read[1](s->musb, 0x20 + ((addr >> 3) & 0x3c));

    }

    printf("%s: unknown register at %03x\n",

                    __FUNCTION__, (int) (addr & 0xfff));

    return 0;

}

static uint32_t tusb_async_readw(void *opaque, hwaddr addr)

{

    TUSBState *s = (TUSBState *) opaque;

    int offset = addr & 0xfff;

    int epnum;

    uint32_t ret;

    switch (offset) {

    case TUSB_DEV_CONF:

        return s->dev_config;

    case TUSB_BASE_OFFSET ... (TUSB_BASE_OFFSET | 0x1ff):

        return musb_read[2](s->musb, offset & 0x1ff);

    case TUSB_FIFO_BASE ... (TUSB_FIFO_BASE | 0x1ff):

        return musb_read[2](s->musb, 0x20 + ((addr >> 3) & 0x3c));

    case TUSB_PHY_OTG_CTRL_ENABLE:

    case TUSB_PHY_OTG_CTRL:

        return 0x00;        /* TODO */

    case TUSB_DEV_OTG_STAT:

        ret = s->otg_status;

#if 0

        if (!(s->prcm_mngmt & TUSB_PRCM_MNGMT_OTG_VBUS_DET_EN))

            ret &= ~TUSB_DEV_OTG_STAT_VBUS_VALID;

#endif

        return ret;

    case TUSB_DEV_OTG_TIMER:

        return s->otg_timer_val;

    case TUSB_PRCM_REV:

        return 0x20;

    case TUSB_PRCM_CONF:

        return s->prcm_config;

    case TUSB_PRCM_MNGMT:

        return s->prcm_mngmt;

    case TUSB_PRCM_WAKEUP_SOURCE:

    case TUSB_PRCM_WAKEUP_CLEAR:        /* TODO: What does this one return?  */

        return 0x00000000;

    case TUSB_PRCM_WAKEUP_MASK:

        return s->wkup_mask;

    case TUSB_PULLUP_1_CTRL:

        return s->pullup[0];

    case TUSB_PULLUP_2_CTRL:

        return s->pullup[1];

    case TUSB_INT_CTRL_REV:

        return 0x20;

    case TUSB_INT_CTRL_CONF:

        return s->control_config;

    case TUSB_USBIP_INT_SRC:

    case TUSB_USBIP_INT_SET:        /* TODO: What do these two return?  */

    case TUSB_USBIP_INT_CLEAR:

        return s->usbip_intr;

    case TUSB_USBIP_INT_MASK:

        return s->usbip_mask;

    case TUSB_DMA_INT_SRC:

    case TUSB_DMA_INT_SET:        /* TODO: What do these two return?  */

    case TUSB_DMA_INT_CLEAR:

        return s->dma_intr;

    case TUSB_DMA_INT_MASK:

        return s->dma_mask;

    case TUSB_GPIO_INT_SRC:        /* TODO: What do these two return?  */

    case TUSB_GPIO_INT_SET:

    case TUSB_GPIO_INT_CLEAR:

        return s->gpio_intr;

    case TUSB_GPIO_INT_MASK:

        return s->gpio_mask;

    case TUSB_INT_SRC:

    case TUSB_INT_SRC_SET:        /* TODO: What do these two return?  */

    case TUSB_INT_SRC_CLEAR:

        return s->intr;

    case TUSB_INT_MASK:

        return s->mask;

    case TUSB_GPIO_REV:

        return 0x30;

    case TUSB_GPIO_CONF:

        return s->gpio_config;

    case TUSB_DMA_CTRL_REV:

        return 0x30;

    case TUSB_DMA_REQ_CONF:

        return s->dma_config;

    case TUSB_EP0_CONF:

        return s->ep0_config;

    case TUSB_EP_IN_SIZE ... (TUSB_EP_IN_SIZE + 0x3b):

        epnum = (offset - TUSB_EP_IN_SIZE) >> 2;

        return s->tx_config[epnum];

    case TUSB_DMA_EP_MAP:

        return s->dma_map;

    case TUSB_EP_OUT_SIZE ... (TUSB_EP_OUT_SIZE + 0x3b):

        epnum = (offset - TUSB_EP_OUT_SIZE) >> 2;

        return s->rx_config[epnum];

    case TUSB_EP_MAX_PACKET_SIZE_OFFSET ...

            (TUSB_EP_MAX_PACKET_SIZE_OFFSET + 0x3b):

        return 0x00000000;        /* TODO */

    case TUSB_WAIT_COUNT:

        return 0x00;                /* TODO */

    case TUSB_SCRATCH_PAD:

        return s->scratch;

    case TUSB_PROD_TEST_RESET:

        return s->test_reset;

    /* DIE IDs */

    case TUSB_DIDR1_LO:

        return 0xa9453c59;

    case TUSB_DIDR1_HI:

        return 0x54059adf;

    }

    printf("%s: unknown register at %03x\n", __FUNCTION__, offset);

    return 0;

}

static void tusb_async_writeb(void *opaque, hwaddr addr,

                uint32_t value)

{

    TUSBState *s = (TUSBState *) opaque;

    switch (addr & 0xfff) {

    case TUSB_BASE_OFFSET ... (TUSB_BASE_OFFSET | 0x1ff):

        musb_write[0](s->musb, addr & 0x1ff, value);

        break;

    case TUSB_FIFO_BASE ... (TUSB_FIFO_BASE | 0x1ff):

        musb_write[0](s->musb, 0x20 + ((addr >> 3) & 0x3c), value);

        break;

    default:

        printf("%s: unknown register at %03x\n",

                        __FUNCTION__, (int) (addr & 0xfff));

        return;

    }

}

static void tusb_async_writeh(void *opaque, hwaddr addr,

                uint32_t value)

{

    TUSBState *s = (TUSBState *) opaque;

    switch (addr & 0xfff) {

    case TUSB_BASE_OFFSET ... (TUSB_BASE_OFFSET | 0x1ff):

        musb_write[1](s->musb, addr & 0x1ff, value);

        break;

    case TUSB_FIFO_BASE ... (TUSB_FIFO_BASE | 0x1ff):

        musb_write[1](s->musb, 0x20 + ((addr >> 3) & 0x3c), value);

        break;

    default:

        printf("%s: unknown register at %03x\n",

                        __FUNCTION__, (int) (addr & 0xfff));

        return;

    }

}

static void tusb_async_writew(void *opaque, hwaddr addr,

                uint32_t value)

{

    TUSBState *s = (TUSBState *) opaque;

    int offset = addr & 0xfff;

    int epnum;

    switch (offset) {

    case TUSB_VLYNQ_CTRL:

        break;

    case TUSB_BASE_OFFSET ... (TUSB_BASE_OFFSET | 0x1ff):

        musb_write[2](s->musb, offset & 0x1ff, value);

        break;

    case TUSB_FIFO_BASE ... (TUSB_FIFO_BASE | 0x1ff):

        musb_write[2](s->musb, 0x20 + ((addr >> 3) & 0x3c), value);

        break;

    case TUSB_DEV_CONF:

        s->dev_config = value;

        s->host_mode = (value & TUSB_DEV_CONF_USB_HOST_MODE);

        if (value & TUSB_DEV_CONF_PROD_TEST_MODE)

            hw_error("%s: Product Test mode not allowed\n", __FUNCTION__);

        break;

    case TUSB_PHY_OTG_CTRL_ENABLE:

    case TUSB_PHY_OTG_CTRL:

        return;                /* TODO */

    case TUSB_DEV_OTG_TIMER:

        s->otg_timer_val = value;

        if (value & TUSB_DEV_OTG_TIMER_ENABLE)

            qemu_mod_timer(s->otg_timer, qemu_get_clock_ns(vm_clock) +

                            muldiv64(TUSB_DEV_OTG_TIMER_VAL(value),

                                     get_ticks_per_sec(), TUSB_DEVCLOCK));

        else

            qemu_del_timer(s->otg_timer);

        break;

    case TUSB_PRCM_CONF:

        s->prcm_config = value;

        break;

    case TUSB_PRCM_MNGMT:

        s->prcm_mngmt = value;

        break;

    case TUSB_PRCM_WAKEUP_CLEAR:

        break;

    case TUSB_PRCM_WAKEUP_MASK:

        s->wkup_mask = value;

        break;

    case TUSB_PULLUP_1_CTRL:

        s->pullup[0] = value;

        break;

    case TUSB_PULLUP_2_CTRL:

        s->pullup[1] = value;

        break;

    case TUSB_INT_CTRL_CONF:

        s->control_config = value;

        tusb_intr_update(s);

        break;

    case TUSB_USBIP_INT_SET:

        s->usbip_intr |= value;

        tusb_usbip_intr_update(s);

        break;

    case TUSB_USBIP_INT_CLEAR:

        s->usbip_intr &= ~value;

        tusb_usbip_intr_update(s);

        musb_core_intr_clear(s->musb, ~value);

        break;

    case TUSB_USBIP_INT_MASK:

        s->usbip_mask = value;

        tusb_usbip_intr_update(s);

        break;

    case TUSB_DMA_INT_SET:

        s->dma_intr |= value;

        tusb_dma_intr_update(s);

        break;

    case TUSB_DMA_INT_CLEAR:

        s->dma_intr &= ~value;

        tusb_dma_intr_update(s);

        break;

    case TUSB_DMA_INT_MASK:

        s->dma_mask = value;

        tusb_dma_intr_update(s);

        break;

    case TUSB_GPIO_INT_SET:

        s->gpio_intr |= value;

        tusb_gpio_intr_update(s);

        break;

    case TUSB_GPIO_INT_CLEAR:

        s->gpio_intr &= ~value;

        tusb_gpio_intr_update(s);

        break;

    case TUSB_GPIO_INT_MASK:

        s->gpio_mask = value;

        tusb_gpio_intr_update(s);

        break;

    case TUSB_INT_SRC_SET:

        s->intr |= value;

        tusb_intr_update(s);

        break;

    case TUSB_INT_SRC_CLEAR:

        s->intr &= ~value;

        tusb_intr_update(s);

        break;

    case TUSB_INT_MASK:

        s->mask = value;

        tusb_intr_update(s);

        break;

    case TUSB_GPIO_CONF:

        s->gpio_config = value;

        break;

    case TUSB_DMA_REQ_CONF:

        s->dma_config = value;

        break;

    case TUSB_EP0_CONF:

        s->ep0_config = value & 0x1ff;

        musb_set_size(s->musb, 0, TUSB_EP0_CONFIG_XFR_SIZE(value),

                        value & TUSB_EP0_CONFIG_DIR_TX);

        break;

    case TUSB_EP_IN_SIZE ... (TUSB_EP_IN_SIZE + 0x3b):

        epnum = (offset - TUSB_EP_IN_SIZE) >> 2;

        s->tx_config[epnum] = value;

        musb_set_size(s->musb, epnum + 1, TUSB_EP_CONFIG_XFR_SIZE(value), 1);

        break;

    case TUSB_DMA_EP_MAP:

        s->dma_map = value;

        break;

    case TUSB_EP_OUT_SIZE ... (TUSB_EP_OUT_SIZE + 0x3b):

        epnum = (offset - TUSB_EP_OUT_SIZE) >> 2;

        s->rx_config[epnum] = value;

        musb_set_size(s->musb, epnum + 1, TUSB_EP_CONFIG_XFR_SIZE(value), 0);

        break;

    case TUSB_EP_MAX_PACKET_SIZE_OFFSET ...

            (TUSB_EP_MAX_PACKET_SIZE_OFFSET + 0x3b):

        return;                /* TODO */

    case TUSB_WAIT_COUNT:

        return;                /* TODO */

    case TUSB_SCRATCH_PAD:

        s->scratch = value;

        break;

    case TUSB_PROD_TEST_RESET:

        s->test_reset = value;

        break;

    default:

        printf("%s: unknown register at %03x\n", __FUNCTION__, offset);

        return;

    }

}

static const MemoryRegionOps tusb_async_ops = {

    .old_mmio = {

        .read = { tusb_async_readb, tusb_async_readh, tusb_async_readw, },

        .write =  { tusb_async_writeb, tusb_async_writeh, tusb_async_writew, },

    },

    .endianness = DEVICE_NATIVE_ENDIAN,

};

static void tusb_otg_tick(void *opaque)

{

    TUSBState *s = (TUSBState *) opaque;

    s->otg_timer_val = 0;

    s->intr |= TUSB_INT_SRC_OTG_TIMEOUT;

    tusb_intr_update(s);

}

static void tusb_power_tick(void *opaque)

{

    TUSBState *s = (TUSBState *) opaque;

    if (s->power) {

        s->intr_ok = ~0;

        tusb_intr_update(s);

    }

}

static void tusb_musb_core_intr(void *opaque, int source, int level)

{

    TUSBState *s = (TUSBState *) opaque;

    uint16_t otg_status = s->otg_status;

    switch (source) {

    case musb_set_vbus:

        if (level)

            otg_status |= TUSB_DEV_OTG_STAT_VBUS_VALID;

        else

            otg_status &= ~TUSB_DEV_OTG_STAT_VBUS_VALID;

        /* XXX: only if TUSB_PHY_OTG_CTRL_OTG_VBUS_DET_EN set?  */

        /* XXX: only if TUSB_PRCM_MNGMT_OTG_VBUS_DET_EN set?  */

        if (s->otg_status != otg_status) {

            s->otg_status = otg_status;

            s->intr |= TUSB_INT_SRC_VBUS_SENSE_CHNG;

            tusb_intr_update(s);

        }

        break;

    case musb_set_session:

        /* XXX: only if TUSB_PHY_OTG_CTRL_OTG_SESS_END_EN set?  */

        /* XXX: only if TUSB_PRCM_MNGMT_OTG_SESS_END_EN set?  */

        if (level) {

            s->otg_status |= TUSB_DEV_OTG_STAT_SESS_VALID;

            s->otg_status &= ~TUSB_DEV_OTG_STAT_SESS_END;

        } else {

            s->otg_status &= ~TUSB_DEV_OTG_STAT_SESS_VALID;

            s->otg_status |= TUSB_DEV_OTG_STAT_SESS_END;

        }

        /* XXX: some IRQ or anything?  */

        break;

    case musb_irq_tx:

    case musb_irq_rx:

        s->usbip_intr = musb_core_intr_get(s->musb);

        /* Fall through.  */

    default:

        if (level)

            s->intr |= 1 << source;

        else

            s->intr &= ~(1 << source);

        tusb_intr_update(s);

        break;

    }

}

static void tusb6010_power(TUSBState *s, int on)

{

    if (!on) {

        s->power = 0;

    } else if (!s->power && on) {

        s->power = 1;

        /* Pull the interrupt down after TUSB6010 comes up.  */

        s->intr_ok = 0;

        tusb_intr_update(s);

        qemu_mod_timer(s->pwr_timer,

                       qemu_get_clock_ns(vm_clock) + get_ticks_per_sec() / 2);

    }

}

static void tusb6010_irq(void *opaque, int source, int level)

{

    if (source) {

        tusb_musb_core_intr(opaque, source - 1, level);

    } else {

        tusb6010_power(opaque, level);

    }

}

static void tusb6010_reset(DeviceState *dev)

{

    TUSBState *s = FROM_SYSBUS(TUSBState, SYS_BUS_DEVICE(dev));

    int i;

    s->test_reset = TUSB_PROD_TEST_RESET_VAL;

    s->host_mode = 0;

    s->dev_config = 0;

    s->otg_status = 0;        /* !TUSB_DEV_OTG_STAT_ID_STATUS means host mode */

    s->power = 0;

    s->mask = 0xffffffff;

    s->intr = 0x00000000;

    s->otg_timer_val = 0;

    s->scratch = 0;

    s->prcm_config = 0;

    s->prcm_mngmt = 0;

    s->intr_ok = 0;

    s->usbip_intr = 0;

    s->usbip_mask = 0;

    s->gpio_intr = 0;

    s->gpio_mask = 0;

    s->gpio_config = 0;

    s->dma_intr = 0;

    s->dma_mask = 0;

    s->dma_map = 0;

    s->dma_config = 0;

    s->ep0_config = 0;

    s->wkup_mask = 0;

    s->pullup[0] = s->pullup[1] = 0;

    s->control_config = 0;

    for (i = 0; i < 15; i++) {

        s->rx_config[i] = s->tx_config[i] = 0;

    }

    musb_reset(s->musb);

}

static int tusb6010_init(SysBusDevice *dev)

{

    TUSBState *s = FROM_SYSBUS(TUSBState, dev);

    s->otg_timer = qemu_new_timer_ns(vm_clock, tusb_otg_tick, s);

    s->pwr_timer = qemu_new_timer_ns(vm_clock, tusb_power_tick, s);

    memory_region_init_io(&s->iomem[1], &tusb_async_ops, s, "tusb-async",

                          UINT32_MAX);

    sysbus_init_mmio(dev, &s->iomem[0]);

    sysbus_init_mmio(dev, &s->iomem[1]);

    sysbus_init_irq(dev, &s->irq);

    qdev_init_gpio_in(&dev->qdev, tusb6010_irq, musb_irq_max + 1);

    s->musb = musb_init(&dev->qdev, 1);

    return 0;

}

static void tusb6010_class_init(ObjectClass *klass, void *data)

{

    DeviceClass *dc = DEVICE_CLASS(klass);

    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);

    k->init = tusb6010_init;

    dc->reset = tusb6010_reset;

}

static const TypeInfo tusb6010_info = {

    .name          = "tusb6010",

    .parent        = TYPE_SYS_BUS_DEVICE,

    .instance_size = sizeof(TUSBState),

    .class_init    = tusb6010_class_init,

};

static void tusb6010_register_types(void)

{

    type_register_static(&tusb6010_info);

}

type_init(tusb6010_register_types)