diff options
Diffstat (limited to 'drivers/usb/gadget/imx_udc.c')
| -rw-r--r-- | drivers/usb/gadget/imx_udc.c | 940 |
1 files changed, 940 insertions, 0 deletions
diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c new file mode 100644 index 000000000..d18059764 --- /dev/null +++ b/drivers/usb/gadget/imx_udc.c @@ -0,0 +1,940 @@ +/* + * Copyright (C) 2010 Freescale Semiconductor, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "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 + * COPYRIGHT OWNER OR CONTRIBUTORS 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. + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/types.h> +#include <malloc.h> +#include <command.h> +#include <asm/errno.h> +#include <usbdevice.h> +#include <usb/imx_udc.h> +#include "ep0.h" + +#ifdef DEBUG +#define DBG(x...) printf(x) +#else +#define DBG(x...) do {} while (0) +#endif + +#define mdelay(n) udelay((n)*1000) + +#define EP_TQ_ITEM_SIZE 4 + +#define inc_index(x) (x = ((x+1) % EP_TQ_ITEM_SIZE)) + +#define ep_is_in(e, tx) ((e == 0) ? (mxc_udc.ep0_dir == USB_DIR_IN) : tx) + +#define USB_RECIP_MASK 0x03 +#define USB_TYPE_MASK (0x03 << 5) + +typedef struct { + int epnum; + int dir; + int max_pkt_size; + struct usb_endpoint_instance *epi; + struct ep_queue_item *ep_dtd[EP_TQ_ITEM_SIZE]; + int index; /* to index the free tx tqi */ + int done; /* to index the complete rx tqi */ + struct ep_queue_item *tail; /* last item in the dtd chain */ + struct ep_queue_head *ep_qh; +} mxc_ep_t; + +typedef struct { + int max_ep; + int ep0_dir; + int setaddr; + struct ep_queue_head *ep_qh; + mxc_ep_t *mxc_ep; + u32 qh_dma; +} mxc_udc_ctrl; + +typedef struct usb_device_request setup_packet; + +static int usb_highspeed; +static mxc_udc_ctrl mxc_udc; +static struct usb_device_instance *udc_device; +static struct urb *ep0_urb; +/* + * malloc an nocached memory + * dmaaddr: phys address + * size : memory size + * align : alignment for this memroy + * return : vir address(NULL when malloc failt) +*/ +static void *malloc_dma_buffer(u32 *dmaaddr, int size, int align) +{ + int msize = (size + align - 1); + u32 vir, vir_align; + + vir = (u32)malloc(msize); + vir = ioremap_nocache(iomem_to_phys(vir), msize); + memset((void *)vir, 0, msize); + vir_align = (vir + align - 1) & (~(align - 1)); + *dmaaddr = (u32)iomem_to_phys(vir_align); + DBG("vir addr %x, dma addr %x\n", vir_align, *dmaaddr); + return (void *)vir_align; +} + +int is_usb_disconnected() +{ + int ret = 0; + + ret = readl(USB_OTGSC) & OTGSC_B_SESSION_VALID ? 0 : 1; + return ret; +} + +static int mxc_init_usb_qh(void) +{ + int size; + memset(&mxc_udc, 0, sizeof(mxc_udc)); + mxc_udc.max_ep = (readl(USB_DCCPARAMS) & DCCPARAMS_DEN_MASK) * 2; + DBG("udc max ep = %d\n", mxc_udc.max_ep); + size = mxc_udc.max_ep * sizeof(struct ep_queue_head); + mxc_udc.ep_qh = malloc_dma_buffer(&mxc_udc.qh_dma, size, 1024); + if (!mxc_udc.ep_qh) { + printf("malloc ep qh dma buffer failure\n"); + return -1; + } + memset(mxc_udc.ep_qh, 0, size); + writel(mxc_udc.qh_dma & 0xfffff800, USB_ENDPOINTLISTADDR); + + return 0; +} + +static int mxc_init_ep_struct(void) +{ + int i; + + DBG("init mxc ep\n"); + mxc_udc.mxc_ep = malloc(mxc_udc.max_ep * sizeof(mxc_ep_t)); + if (!mxc_udc.mxc_ep) { + printf("malloc ep struct failure\n"); + return -1; + } + memset((void *)mxc_udc.mxc_ep, 0, sizeof(mxc_ep_t) * mxc_udc.max_ep); + for (i = 0; i < mxc_udc.max_ep / 2; i++) { + mxc_ep_t *ep; + ep = mxc_udc.mxc_ep + i * 2; + ep->epnum = i; + ep->index = ep->done = 0; + ep->dir = USB_RECV; /* data from host to device */ + ep->ep_qh = &mxc_udc.ep_qh[i * 2]; + + ep = mxc_udc.mxc_ep + (i * 2 + 1); + ep->epnum = i; + ep->index = ep->done = 0; + ep->dir = USB_SEND; /* data to host from device */ + ep->ep_qh = &mxc_udc.ep_qh[(i * 2 + 1)]; + } + return 0; +} + +static int mxc_init_ep_dtd(u8 index) +{ + mxc_ep_t *ep; + struct ep_queue_item *tqi; + u32 dma; + int i; + + if (index >= mxc_udc.max_ep) + DBG("%s ep %d is not valid\n", __func__, index); + + ep = mxc_udc.mxc_ep + index; + tqi = malloc_dma_buffer(&dma, + EP_TQ_ITEM_SIZE * sizeof(struct ep_queue_item), 1024); + if (tqi == NULL) { + printf("%s malloc tq item failure\n", __func__); + return -1; + } + for (i = 0; i < EP_TQ_ITEM_SIZE; i++) { + ep->ep_dtd[i] = tqi + i; + ep->ep_dtd[i]->item_dma = + dma + i * sizeof(struct ep_queue_item); + } + return -1; +} +static void mxc_ep_qh_setup(u8 ep_num, u8 dir, u8 ep_type, + u32 max_pkt_len, u32 zlt, u8 mult) +{ + struct ep_queue_head *p_qh = mxc_udc.ep_qh + (2 * ep_num + dir); + u32 tmp = 0; + + tmp = max_pkt_len << 16; + switch (ep_type) { + case USB_ENDPOINT_XFER_CONTROL: + tmp |= (1 << 15); + break; + case USB_ENDPOINT_XFER_ISOC: + tmp |= (mult << 30); + break; + case USB_ENDPOINT_XFER_BULK: + case USB_ENDPOINT_XFER_INT: + break; + default: + DBG("error ep type is %d\n", ep_type); + return; + } + if (zlt) + tmp |= (1<<29); + + p_qh->config = tmp; +} + +static void mxc_ep_setup(u8 ep_num, u8 dir, u8 ep_type) +{ + u32 epctrl = 0; + epctrl = readl(USB_ENDPTCTRL(ep_num)); + if (dir) { + if (ep_num) + epctrl |= EPCTRL_TX_DATA_TOGGLE_RST; + epctrl |= EPCTRL_TX_ENABLE; + epctrl |= ((u32)(ep_type) << EPCTRL_TX_EP_TYPE_SHIFT); + } else { + if (ep_num) + epctrl |= EPCTRL_RX_DATA_TOGGLE_RST; + epctrl |= EPCTRL_RX_ENABLE; + epctrl |= ((u32)(ep_type) << EPCTRL_RX_EP_TYPE_SHIFT); + } + writel(epctrl, USB_ENDPTCTRL(ep_num)); +} + +static void mxc_tqi_init_page(struct ep_queue_item *tqi) +{ + tqi->page0 = tqi->page_dma; + tqi->page1 = tqi->page0 + 0x1000; + tqi->page2 = tqi->page1 + 0x1000; + tqi->page3 = tqi->page2 + 0x1000; + tqi->page4 = tqi->page3 + 0x1000; +} +static int mxc_malloc_ep0_ptr(mxc_ep_t *ep) +{ + int i; + struct ep_queue_item *tqi; + int max_pkt_size = USB_MAX_CTRL_PAYLOAD; + + ep->max_pkt_size = max_pkt_size; + for (i = 0; i < EP_TQ_ITEM_SIZE; i++) { + tqi = ep->ep_dtd[i]; + tqi->page_vir = (u32)malloc_dma_buffer(&tqi->page_dma, + max_pkt_size, 1024); + if ((void *)tqi->page_vir == NULL) { + printf("malloc ep's dtd bufer failure, i=%d\n", i); + return -1; + } + mxc_tqi_init_page(tqi); + } + return 0; +} + +static void ep0_setup(void) +{ + mxc_ep_qh_setup(0, USB_RECV, USB_ENDPOINT_XFER_CONTROL, + USB_MAX_CTRL_PAYLOAD, 0, 0); + mxc_ep_qh_setup(0, USB_SEND, USB_ENDPOINT_XFER_CONTROL, + USB_MAX_CTRL_PAYLOAD, 0, 0); + mxc_ep_setup(0, USB_RECV, USB_ENDPOINT_XFER_CONTROL); + mxc_ep_setup(0, USB_SEND, USB_ENDPOINT_XFER_CONTROL); + mxc_init_ep_dtd(0 * 2 + USB_RECV); + mxc_init_ep_dtd(0 * 2 + USB_SEND); + mxc_malloc_ep0_ptr(mxc_udc.mxc_ep + (USB_RECV)); + mxc_malloc_ep0_ptr(mxc_udc.mxc_ep + (USB_SEND)); +} + + +static int mxc_tqi_is_busy(struct ep_queue_item *tqi) +{ + /* bit 7 is set by software when send, clear by controller + when finish */ + return tqi->info & (1 << 7); +} + +static int mxc_ep_xfer_is_working(mxc_ep_t *ep, u32 in) +{ + /* in: means device -> host */ + u32 bitmask = 1 << (ep->epnum + in * 16); + u32 temp, prime, tstat; + + prime = (bitmask & readl(USB_ENDPTPRIME)); + if (prime) + return 1; + do { + temp = readl(USB_USBCMD); + writel(temp|USB_CMD_ATDTW, USB_USBCMD); + tstat = readl(USB_ENDPTSTAT) & bitmask; + } while (!readl(USB_USBCMD) & USB_CMD_ATDTW); + writel(temp & (~USB_CMD_ATDTW), USB_USBCMD); + + if (tstat) + return 1; + return 0; +} + +static void mxc_update_qh(mxc_ep_t *ep, struct ep_queue_item *tqi, u32 in) +{ + /* in: means device -> host */ + struct ep_queue_head *qh = ep->ep_qh; + u32 bitmask = 1 << (ep->epnum + in * 16); + DBG("%s, line %d, epnum=%d, in=%d\n", __func__, + __LINE__, ep->epnum, in); + qh->next_queue_item = tqi->item_dma; + qh->info = 0; + writel(bitmask, USB_ENDPTPRIME); +} + +static void _dump_buf(u32 buf, u32 len) +{ +#ifdef DEBUG + char *data = (char *)buf; + int i; + for (i = 0; i < len; i++) + printf("%x ", data[i]); + printf("\n"); +#endif +} + + +static void mxc_udc_queue_update(u8 epnum, u8 *data, u32 len, u32 tx) +{ + mxc_ep_t *ep; + struct ep_queue_item *tqi, *head, *last; + int send = 0; + int in; + + head = last = NULL; + in = ep_is_in(epnum, tx); + ep = mxc_udc.mxc_ep + (epnum * 2 + in); + DBG("epnum = %d, in = %d\n", epnum, in); + do { + tqi = ep->ep_dtd[ep->index]; + DBG("%s, index = %d, tqi = %p\n", __func__, ep->index, tqi); + while (mxc_tqi_is_busy(tqi)) + ; + mxc_tqi_init_page(tqi); + DBG("%s, line = %d, len = %d\n", __func__, __LINE__, len); + inc_index(ep->index); + send = MIN(len, 0x1000); + if (data) { + memcpy((void *)tqi->page_vir, (void *)data, send); + _dump_buf(tqi->page_vir, send); + } + if (!head) + last = head = tqi; + else { + last->next_item_ptr = tqi->item_dma; + last->next_item_vir = tqi; + last = tqi; + } + if (!tx) + tqi->reserved[0] = send; + /* we set IOS for every dtd */ + tqi->info = ((send << 16) | (1 << 15) | (1 << 7)); + data += send; + len -= send; + } while (len); + + last->next_item_ptr = 0x1; /* end */ + if (ep->tail) { + ep->tail->next_item_ptr = head->item_dma; + ep->tail->next_item_vir = head; + if (mxc_ep_xfer_is_working(ep, in)) { + DBG("ep is working\n"); + goto out; + } + } + mxc_update_qh(ep, head, in); +out: + ep->tail = last; +} + +static void mxc_udc_txqueue_update(u8 ep, u8 *data, u32 len) +{ + mxc_udc_queue_update(ep, data, len, 1); +} + +void mxc_udc_rxqueue_update(u8 ep, u32 len) +{ + mxc_udc_queue_update(ep, NULL, len, 0); +} + +static void mxc_ep0_stall(void) +{ + u32 temp; + temp = readl(USB_ENDPTCTRL(0)); + temp |= EPCTRL_TX_EP_STALL | EPCTRL_RX_EP_STALL; + writel(temp, USB_ENDPTCTRL(0)); +} +/* + * usb function + */ +void usb_setup(void) +{ + unsigned int temp = 0, portctrl = 0; + + /* Stop and reset the usb controller */ + temp = readl(USB_USBCMD); + temp &= ~USB_CMD_RUN_STOP; + writel(temp, USB_USBCMD); + + temp = readl(USB_USBCMD); + temp |= USB_CMD_CTRL_RESET; + writel(temp, USB_USBCMD); + while (readl(USB_USBCMD) & USB_CMD_CTRL_RESET) + ; + + /* Set the controller as device mode */ + temp = readl(USB_USBMODE); + temp &= ~USB_MODE_CTRL_MODE_MASK; /* clear mode bits */ + temp |= USB_MODE_CTRL_MODE_DEVICE; + /* Disable Setup Lockout */ + writel(temp, USB_USBMODE); + + /* Config PHY interface */ + portctrl = readl(USB_PORTSC); + portctrl &= ~(PORTSCX_PHY_TYPE_SEL | PORTSCX_PORT_WIDTH); + portctrl |= PORTSCX_PTW_16BIT; + writel(portctrl, USB_PORTSC); + + writel(0xffffffff, USB_ENDPTFLUSH); +} +static void mxc_usb_run(void) +{ + unsigned int temp = 0; + + /* Enable DR irq reg */ + temp = USB_INTR_INT_EN | USB_INTR_ERR_INT_EN + | USB_INTR_PTC_DETECT_EN | USB_INTR_RESET_EN + | USB_INTR_DEVICE_SUSPEND | USB_INTR_SYS_ERR_EN; + + writel(temp, USB_USBINTR); + + /* Set controller to Run */ + temp = readl(USB_USBCMD); + temp |= USB_CMD_RUN_STOP; + writel(temp, USB_USBCMD); +} + +static void mxc_usb_stop(void) +{ + unsigned int temp = 0; + + writel(temp, USB_USBINTR); + + /* Set controller to Stop */ + temp = readl(USB_USBCMD); + temp &= ~USB_CMD_RUN_STOP; + writel(temp, USB_USBCMD); +} + +static void usb_phy_init(void) +{ + u32 temp; + /* select 24M clk */ + temp = readl(USB_PHY1_CTRL); + temp &= ~3; + temp |= 1; + writel(temp, USB_PHY1_CTRL); + /* Config PHY interface */ + temp = readl(USB_PORTSC); + temp &= ~(PORTSCX_PHY_TYPE_SEL | PORTSCX_PORT_WIDTH); + temp |= PORTSCX_PTW_16BIT; + writel(temp, USB_PORTSC); + DBG("Config PHY END\n"); +} + +static void usb_set_mode_device(void) +{ + u32 temp; + /* Do core reset */ + temp = readl(USB_USBCMD); + temp |= USB_CMD_CTRL_RESET; + writel(temp, USB_USBCMD); + while (readl(USB_USBCMD) & USB_CMD_CTRL_RESET) + ; + DBG("DOORE RESET END\n"); + + DBG("init core to device mode\n"); + temp = readl(USB_USBMODE); + temp &= ~USB_MODE_CTRL_MODE_MASK; /* clear mode bits */ + temp |= USB_MODE_CTRL_MODE_DEVICE; + /* Disable Setup Lockout */ + temp |= USB_MODE_SETUP_LOCK_OFF; + writel(temp, USB_USBMODE); + DBG("init core to device mode end\n"); +} + +static void usb_init_eps(void) +{ + u32 temp; + + temp = readl(USB_ENDPTNAKEN); + temp |= 0x10001; /* clear mode bits */ + writel(temp, USB_ENDPTNAKEN); + writel(readl(USB_ENDPTCOMPLETE), USB_ENDPTCOMPLETE); + writel(readl(USB_ENDPTSETUPSTAT), USB_ENDPTSETUPSTAT); + writel(0xffffffff, USB_ENDPTFLUSH); + DBG("FLUSH END\n"); +} + +static void usb_udc_init(void) +{ + DBG("\n************************\n"); + DBG(" usb init start\n"); + DBG("\n************************\n"); + + usb_phy_init(); + usb_set_mode_device(); + mxc_init_usb_qh(); + usb_init_eps(); + mxc_init_ep_struct(); + ep0_setup(); +} + +void usb_shutdown(void) +{ + u32 temp; + /* disable pullup */ + temp = readl(USB_USBCMD); + temp &= ~USB_CMD_RUN_STOP; + writel(temp, USB_USBCMD); + mdelay(2); +} + +static void ch9getstatus(u8 request_type, u16 value, u16 index, u16 length) +{ + u16 tmp; + + if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) { + tmp = 1 << 0; /* self powerd */ + tmp |= 0 << 1; /* not remote wakeup able */ + } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) { + tmp = 0; + } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) { + tmp = 0; + } + mxc_udc.ep0_dir = USB_DIR_IN; + mxc_udc_queue_update(0, (u8 *)&tmp, 2, 0xffffffff); +} +static void mxc_udc_read_setup_pkt(setup_packet *s) +{ + u32 temp; + temp = readl(USB_ENDPTSETUPSTAT); + writel(temp, USB_ENDPTSETUPSTAT); + DBG("setup stat %x\n", temp); + do { + temp = readl(USB_USBCMD); + temp |= USB_CMD_SUTW; + writel(temp, USB_USBCMD); + memcpy((void *)s, + (void *)mxc_udc.mxc_ep[0].ep_qh->setup_data, 8); + } while (!readl(USB_USBCMD) & USB_CMD_SUTW); + + DBG("handle_setup s.type=%x req=%x len=%x\n", + s->bmRequestType, s->bRequest, s->wLength); + temp = readl(USB_USBCMD); + temp &= ~USB_CMD_SUTW; + writel(temp, USB_ENDPTSETUPSTAT); +} + +static void mxc_udc_recv_setup(void) +{ + setup_packet *s = &ep0_urb->device_request; + + mxc_udc_read_setup_pkt(s); + if (s->wLength) { + mxc_udc.ep0_dir = (s->bmRequestType & USB_DIR_IN) ? + USB_DIR_OUT : USB_DIR_IN; + mxc_udc_queue_update(0, NULL, 0, 0xffffffff); + } + if (ep0_recv_setup(ep0_urb)) { + mxc_ep0_stall(); + return; + } + switch (s->bRequest) { + case USB_REQ_GET_STATUS: + if ((s->bmRequestType & (USB_DIR_IN | USB_TYPE_MASK)) != + (USB_DIR_IN | USB_TYPE_STANDARD)) + break; + ch9getstatus(s->bmRequestType, s->wValue, + s->wIndex, s->wLength); + return; + case USB_REQ_SET_ADDRESS: + if (s->bmRequestType != (USB_DIR_OUT | + USB_TYPE_STANDARD | USB_RECIP_DEVICE)) + break; + mxc_udc.setaddr = 1; + mxc_udc.ep0_dir = USB_DIR_IN; + mxc_udc_queue_update(0, NULL, 0, 0xffffffff); + usbd_device_event_irq(udc_device, DEVICE_ADDRESS_ASSIGNED, 0); + return; + case USB_REQ_SET_CONFIGURATION: + usbd_device_event_irq(udc_device, DEVICE_CONFIGURED, 0); + case USB_REQ_CLEAR_FEATURE: + case USB_REQ_SET_FEATURE: + { + int rc = -1; + if ((s->bmRequestType & (USB_RECIP_MASK | USB_TYPE_MASK)) == + (USB_RECIP_ENDPOINT | USB_TYPE_STANDARD)) + rc = 0; + else if ((s->bmRequestType & + (USB_RECIP_MASK | USB_TYPE_MASK)) == + (USB_RECIP_DEVICE | USB_TYPE_STANDARD)) + rc = 0; + else + break; + if (rc == 0) { + mxc_udc.ep0_dir = USB_DIR_IN; + mxc_udc_queue_update(0, NULL, 0, 0xffffffff); + } + return; + } + default: + break; + } + if (s->wLength) { + mxc_udc.ep0_dir = (s->bmRequestType & USB_DIR_IN) ? + USB_DIR_IN : USB_DIR_OUT; + mxc_udc_queue_update(0, ep0_urb->buffer, + ep0_urb->actual_length, 0xffffffff); + ep0_urb->actual_length = 0; + } else { + mxc_udc.ep0_dir = USB_DIR_IN; + mxc_udc_queue_update(0, NULL, 0, 0xffffffff); + } +} +static int mxc_udc_tqi_empty(struct ep_queue_item *tqi) +{ + int ret; + + ret = tqi->info & (1 << 7); + return ret; +} + +static struct usb_endpoint_instance *mxc_get_epi(u8 epnum) +{ + int i; + for (i = 0; i < udc_device->bus->max_endpoints; i++) { + if ((udc_device->bus->endpoint_array[i].endpoint_address & + USB_ENDPOINT_NUMBER_MASK) == epnum) + return &udc_device->bus->endpoint_array[i]; + } + return NULL; +} +static u32 _mxc_ep_recv_data(u8 epnum, struct ep_queue_item *tqi) +{ + struct usb_endpoint_instance *epi = mxc_get_epi(epnum); + struct urb *urb; + u32 len = 0; + + if (!epi) + return 0; + + urb = epi->rcv_urb; + if (urb) { + u8 *data = urb->buffer + urb->actual_length; + int remain_len = (tqi->info >> 16) & (0xefff); + len = tqi->reserved[0] - remain_len; + DBG("recv len %d-%d-%d\n", len, tqi->reserved[0], remain_len); + memcpy(data, (void *)tqi->page_vir, len); + } + return len; +} + +static void mxc_udc_ep_recv(u8 epnum) +{ + mxc_ep_t *ep = mxc_udc.mxc_ep + (epnum * 2 + USB_RECV); + struct ep_queue_item *tqi; + while (1) { + u32 nbytes; + tqi = ep->ep_dtd[ep->done]; + if (mxc_udc_tqi_empty(tqi)) + break; + nbytes = _mxc_ep_recv_data(epnum, tqi); + usbd_rcv_complete(ep->epi, nbytes, 0); + inc_index(ep->done); + if (ep->done == ep->index) + break; + } +} +static void mxc_udc_handle_xfer_complete(void) +{ + int i; + u32 bitpos = readl(USB_ENDPTCOMPLETE); + + writel(bitpos, USB_ENDPTCOMPLETE); + + for (i = 0; i < mxc_udc.max_ep; i++) { + int epnum = i >> 1; + int dir = i % 2; + u32 bitmask = 1 << (epnum + 16 * dir); + if (!(bitmask & bitpos)) + continue; + DBG("ep %d, dir %d, complete\n", epnum, dir); + if (!epnum) { + if (mxc_udc.setaddr) { + writel(udc_device->address << 25, + USB_DEVICEADDR); + mxc_udc.setaddr = 0; + } + continue; + } + DBG("############### dir = %d ***************\n", dir); + if (dir == USB_SEND) + continue; + mxc_udc_ep_recv(epnum); + } +} +static void usb_dev_hand_usbint(void) +{ + if (readl(USB_ENDPTSETUPSTAT)) { + DBG("recv one setup packet\n"); + mxc_udc_recv_setup(); + } + if (readl(USB_ENDPTCOMPLETE)) { + DBG("Dtd complete irq\n"); + mxc_udc_handle_xfer_complete(); + } +} + +static void usb_dev_hand_reset(void) +{ + u32 temp; + temp = readl(USB_DEVICEADDR); + temp &= ~0xfe000000; + writel(temp, USB_DEVICEADDR); + writel(readl(USB_ENDPTSETUPSTAT), USB_ENDPTSETUPSTAT); + writel(readl(USB_ENDPTCOMPLETE), USB_ENDPTCOMPLETE); + while (readl(USB_ENDPTPRIME)) + ; + writel(0xffffffff, USB_ENDPTFLUSH); + DBG("reset-PORTSC=%x\n", readl(USB_PORTSC)); + usbd_device_event_irq(udc_device, DEVICE_RESET, 0); +} + +void usb_dev_hand_pci(void) +{ + u32 speed; + while (readl(USB_PORTSC) & PORTSCX_PORT_RESET) + ; + speed = readl(USB_PORTSC) & PORTSCX_PORT_SPEED_MASK; + switch (speed) { + case PORTSCX_PORT_SPEED_HIGH: + usb_highspeed = 2; + break; + case PORTSCX_PORT_SPEED_FULL: + usb_highspeed = 1; + break; + case PORTSCX_PORT_SPEED_LOW: + usb_highspeed = 0; + break; + default: + break; + } + DBG("portspeed=%d, speed = %x\n", usb_highspeed, speed); +} + +void usb_dev_hand_suspend(void) +{ +} +static int ll; +void mxc_irq_poll(void) +{ + unsigned irq_src = readl(USB_USBSTS) & readl(USB_USBINTR); + writel(irq_src, USB_USBSTS); + + if (irq_src == 0) + return; + + if (irq_src & USB_STS_INT) { + ll++; + DBG("USB_INT\n"); + usb_dev_hand_usbint(); + } + if (irq_src & USB_STS_RESET) { + printf("USB_RESET\n"); + usb_dev_hand_reset(); + } + if (irq_src & USB_STS_PORT_CHANGE) + usb_dev_hand_pci(); + if (irq_src & USB_STS_SUSPEND) + printf("USB_SUSPEND\n"); + if (irq_src & USB_STS_ERR) + printf("USB_ERR\n"); +} + +void mxc_udc_wait_cable_insert(void) +{ + u32 temp; + int cable_connect = 1; + + do { + udelay(50); + + temp = readl(USB_OTGSC); + if (temp & (OTGSC_B_SESSION_VALID)) { + printf("USB Mini b cable Connected!\n"); + break; + } else if (cable_connect == 1) { + printf("wait usb cable into the connector!\n"); + cable_connect = 0; + } + } while (1); +} + +/* + * mxc_udc_init function + */ +int mxc_udc_init(void) +{ + set_usboh3_clk(); + set_usb_phy1_clk(); + enable_usboh3_clk(1); + enable_usb_phy1_clk(1); + usb_udc_init(); + + return 0; +} + +void mxc_udc_poll(void) +{ + mxc_irq_poll(); +} + +/* + * Functions for gadget APIs + */ +int udc_init(void) +{ + mxc_udc_init(); + return 0; +} + +void udc_setup_ep(struct usb_device_instance *device, u32 index, + struct usb_endpoint_instance *epi) +{ + u8 dir, epnum, zlt, mult; + u8 ep_type; + u32 max_pkt_size; + int ep_addr; + mxc_ep_t *ep; + + if (epi) { + zlt = 1; + mult = 0; + ep_addr = epi->endpoint_address; + epnum = ep_addr & USB_ENDPOINT_NUMBER_MASK; + DBG("setup ep %d\n", epnum); + if ((ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) { + dir = USB_SEND; + ep_type = epi->tx_attributes; + max_pkt_size = epi->tx_packetSize; + } else { + dir = USB_RECV; + ep_type = epi->rcv_attributes; + max_pkt_size = epi->rcv_packetSize; + } + if (ep_type == USB_ENDPOINT_XFER_ISOC) { + mult = (u32)(1 + ((max_pkt_size >> 11) & 0x03)); + max_pkt_size = max_pkt_size & 0x7ff; + DBG("mult = %d\n", mult); + } + ep = mxc_udc.mxc_ep + (epnum * 2 + dir); + ep->epi = epi; + if (epnum) { + struct ep_queue_item *tqi; + int i; + + mxc_ep_qh_setup(epnum, dir, ep_type, + max_pkt_size, zlt, mult); + mxc_ep_setup(epnum, dir, ep_type); + mxc_init_ep_dtd(epnum * 2 + dir); + + /* malloc endpoint's dtd's data buffer*/ + ep->max_pkt_size = max_pkt_size; + for (i = 0; i < EP_TQ_ITEM_SIZE; i++) { + tqi = ep->ep_dtd[i]; + tqi->page_vir = (u32)malloc_dma_buffer( + &tqi->page_dma, max_pkt_size, 1024); + if ((void *)tqi->page_vir == NULL) { + printf("malloc dtd bufer failure\n"); + return; + } + mxc_tqi_init_page(tqi); + } + } + } +} + + +int udc_endpoint_write(struct usb_endpoint_instance *epi) +{ + struct urb *urb = epi->tx_urb; + int ep_num = epi->endpoint_address & USB_ENDPOINT_NUMBER_MASK; + u8 *data = (u8 *)urb->buffer + epi->sent; + int n = urb->actual_length - epi->sent; + mxc_udc_txqueue_update(ep_num, data, n); + epi->last = n; + epi->sent += n; + return 0; +} + +void udc_enable(struct usb_device_instance *device) +{ + udc_device = device; + ep0_urb = usbd_alloc_urb(udc_device, udc_device->bus->endpoint_array); +} + +void udc_startup_events(struct usb_device_instance *device) +{ + usbd_device_event_irq(device, DEVICE_INIT, 0); + usbd_device_event_irq(device, DEVICE_CREATE, 0); + udc_enable(device); +} + +void udc_irq(void) +{ + mxc_irq_poll(); +} + +void udc_connect(void) +{ + mxc_usb_run(); + mxc_udc_wait_cable_insert(); +} + +void udc_disconnect(void) +{ + mxc_usb_stop(); +} + +void udc_set_nak(int epid) +{ +} + +void udc_unset_nak(int epid) +{ +} |