/*
- * Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD.
+ * Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
*
* 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; version 2 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#define PCH_UDC_PCI_BAR 1
#define PCI_DEVICE_ID_INTEL_EG20T_UDC 0x8808
+#define PCI_VENDOR_ID_ROHM 0x10DB
+#define PCI_DEVICE_ID_ML7213_IOH_UDC 0x801D
+#define PCI_DEVICE_ID_ML7831_IOH_UDC 0x8808
static const char ep0_string[] = "ep0in";
static DEFINE_SPINLOCK(udc_stall_spinlock); /* stall spin lock */
struct pch_udc_dev *pch_udc; /* pointer to device object */
-
static int speed_fs;
module_param_named(speed_fs, speed_fs, bool, S_IRUGO);
MODULE_PARM_DESC(speed_fs, "true for Full speed operation");
* @dma_mapped: DMA memory mapped for request
* @dma_done: DMA completed for request
* @chain_len: chain length
+ * @buf: Buffer memory for align adjustment
+ * @dma: DMA memory for align adjustment
*/
struct pch_udc_request {
struct usb_request req;
dma_mapped:1,
dma_done:1;
unsigned chain_len;
+ void *buf;
+ dma_addr_t dma;
};
static inline u32 pch_udc_readl(struct pch_udc_dev *dev, unsigned long reg)
/**
* pch_udc_ep_set_bufsz() - Set the maximum packet size for the endpoint
* @ep: Reference to structure of type pch_udc_ep_regs
- * @buf_size: The buffer size
+ * @buf_size: The buffer word size
*/
static void pch_udc_ep_set_bufsz(struct pch_udc_ep *ep,
u32 buf_size, u32 ep_in)
/**
* pch_udc_ep_set_maxpkt() - Set the Max packet size for the endpoint
* @ep: Reference to structure of type pch_udc_ep_regs
- * @pkt_size: The packet size
+ * @pkt_size: The packet byte size
*/
static void pch_udc_ep_set_maxpkt(struct pch_udc_ep *ep, u32 pkt_size)
{
*/
static void pch_udc_ep_fifo_flush(struct pch_udc_ep *ep, int dir)
{
- unsigned int loopcnt = 0;
- struct pch_udc_dev *dev = ep->dev;
-
if (dir) { /* IN ep */
pch_udc_ep_bit_set(ep, UDC_EPCTL_ADDR, UDC_EPCTL_F);
return;
}
-
- if (pch_udc_read_ep_status(ep) & UDC_EPSTS_MRXFIFO_EMP)
- return;
- pch_udc_ep_bit_set(ep, UDC_EPCTL_ADDR, UDC_EPCTL_MRXFLUSH);
- /* Wait for RxFIFO Empty */
- loopcnt = 10000;
- while (!(pch_udc_read_ep_status(ep) & UDC_EPSTS_MRXFIFO_EMP) &&
- --loopcnt)
- udelay(5);
- if (!loopcnt)
- dev_err(&dev->pdev->dev, "RxFIFO not Empty\n");
- pch_udc_ep_bit_clr(ep, UDC_EPCTL_ADDR, UDC_EPCTL_MRXFLUSH);
}
/**
else
buff_size = UDC_EPOUT_BUFF_SIZE;
pch_udc_ep_set_bufsz(ep, buff_size, ep->in);
- pch_udc_ep_set_maxpkt(ep, le16_to_cpu(desc->wMaxPacketSize));
+ pch_udc_ep_set_maxpkt(ep, usb_endpoint_maxp(desc));
pch_udc_ep_set_nak(ep);
pch_udc_ep_fifo_flush(ep, ep->in);
/* Configure the endpoint */
(cfg->cur_cfg << UDC_CSR_NE_CFG_SHIFT) |
(cfg->cur_intf << UDC_CSR_NE_INTF_SHIFT) |
(cfg->cur_alt << UDC_CSR_NE_ALT_SHIFT) |
- le16_to_cpu(desc->wMaxPacketSize) << UDC_CSR_NE_MAX_PKT_SHIFT;
+ usb_endpoint_maxp(desc) << UDC_CSR_NE_MAX_PKT_SHIFT;
if (ep->in)
pch_udc_write_csr(ep->dev, val, UDC_EPIN_IDX(ep->num));
return -EOPNOTSUPP;
}
+static int pch_udc_start(struct usb_gadget_driver *driver,
+ int (*bind)(struct usb_gadget *));
+static int pch_udc_stop(struct usb_gadget_driver *driver);
static const struct usb_gadget_ops pch_udc_ops = {
.get_frame = pch_udc_pcd_get_frame,
.wakeup = pch_udc_pcd_wakeup,
.pullup = pch_udc_pcd_pullup,
.vbus_session = pch_udc_pcd_vbus_session,
.vbus_draw = pch_udc_pcd_vbus_draw,
+ .start = pch_udc_start,
+ .stop = pch_udc_stop,
};
/**
dev = ep->dev;
if (req->dma_mapped) {
- if (ep->in)
- dma_unmap_single(&dev->pdev->dev, req->req.dma,
- req->req.length, DMA_TO_DEVICE);
- else
- dma_unmap_single(&dev->pdev->dev, req->req.dma,
- req->req.length, DMA_FROM_DEVICE);
+ if (req->dma == DMA_ADDR_INVALID) {
+ if (ep->in)
+ dma_unmap_single(&dev->pdev->dev, req->req.dma,
+ req->req.length,
+ DMA_TO_DEVICE);
+ else
+ dma_unmap_single(&dev->pdev->dev, req->req.dma,
+ req->req.length,
+ DMA_FROM_DEVICE);
+ req->req.dma = DMA_ADDR_INVALID;
+ } else {
+ if (ep->in)
+ dma_unmap_single(&dev->pdev->dev, req->dma,
+ req->req.length,
+ DMA_TO_DEVICE);
+ else {
+ dma_unmap_single(&dev->pdev->dev, req->dma,
+ req->req.length,
+ DMA_FROM_DEVICE);
+ memcpy(req->req.buf, req->buf, req->req.length);
+ }
+ kfree(req->buf);
+ req->dma = DMA_ADDR_INVALID;
+ }
req->dma_mapped = 0;
- req->req.dma = DMA_ADDR_INVALID;
}
ep->halted = 1;
spin_unlock(&dev->lock);
struct pch_udc_data_dma_desc *td = req->td_data;
unsigned i = req->chain_len;
+ dma_addr_t addr2;
+ dma_addr_t addr = (dma_addr_t)td->next;
+ td->next = 0x00;
for (; i > 1; --i) {
- dma_addr_t addr = (dma_addr_t)td->next;
/* do not free first desc., will be done by free for request */
td = phys_to_virt(addr);
+ addr2 = (dma_addr_t)td->next;
pci_pool_free(dev->data_requests, td, addr);
+ td->next = 0x00;
+ addr = addr2;
}
+ req->chain_len = 1;
}
/**
if (req->chain_len > 1)
pch_udc_free_dma_chain(ep->dev, req);
- for (; ; bytes -= buf_len, ++len) {
- if (ep->in)
- td->status = PCH_UDC_BS_HST_BSY | min(buf_len, bytes);
- else
- td->status = PCH_UDC_BS_HST_BSY;
+ if (req->dma == DMA_ADDR_INVALID)
+ td->dataptr = req->req.dma;
+ else
+ td->dataptr = req->dma;
+ td->status = PCH_UDC_BS_HST_BSY;
+ for (; ; bytes -= buf_len, ++len) {
+ td->status = PCH_UDC_BS_HST_BSY | min(buf_len, bytes);
if (bytes <= buf_len)
break;
-
last = td;
td = pci_pool_alloc(ep->dev->data_requests, gfp_flags,
&dma_addr);
if (!td)
goto nomem;
-
i += buf_len;
- td->dataptr = req->req.dma + i;
+ td->dataptr = req->td_data->dataptr + i;
last->next = dma_addr;
}
{
int retval;
- req->td_data->dataptr = req->req.dma;
- req->td_data->status |= PCH_UDC_DMA_LAST;
/* Allocate and create a DMA chain */
retval = pch_udc_create_dma_chain(ep, req, ep->ep.maxpacket, gfp);
if (retval) {
- pr_err("%s: could not create DMA chain: %d\n",
- __func__, retval);
+ pr_err("%s: could not create DMA chain:%d\n", __func__, retval);
return retval;
}
- if (!ep->in)
- return 0;
- if (req->req.length <= ep->ep.maxpacket)
- req->td_data->status = PCH_UDC_DMA_LAST | PCH_UDC_BS_HST_BSY |
- req->req.length;
- /* if bytes < max packet then tx bytes must
- * be written in packet per buffer mode
- */
- if ((req->req.length < ep->ep.maxpacket) || !ep->num)
+ if (ep->in)
req->td_data->status = (req->td_data->status &
- ~PCH_UDC_RXTX_BYTES) | req->req.length;
- req->td_data->status = (req->td_data->status &
- ~PCH_UDC_BUFF_STS) | PCH_UDC_BS_HST_BSY;
+ ~PCH_UDC_BUFF_STS) | PCH_UDC_BS_HST_RDY;
return 0;
}
ep->desc = desc;
ep->halted = 0;
pch_udc_ep_enable(ep, &ep->dev->cfg_data, desc);
- ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+ ep->ep.maxpacket = usb_endpoint_maxp(desc);
pch_udc_enable_ep_interrupts(ep->dev, PCH_UDC_EPINT(ep->in, ep->num));
spin_unlock_irqrestore(&dev->lock, iflags);
return 0;
if (!req)
return NULL;
req->req.dma = DMA_ADDR_INVALID;
+ req->dma = DMA_ADDR_INVALID;
INIT_LIST_HEAD(&req->queue);
if (!ep->dev->dma_addr)
return &req->req;
return -EINVAL;
if (!dev->driver || (dev->gadget.speed == USB_SPEED_UNKNOWN))
return -ESHUTDOWN;
- spin_lock_irqsave(&ep->dev->lock, iflags);
+ spin_lock_irqsave(&dev->lock, iflags);
/* map the buffer for dma */
if (usbreq->length &&
((usbreq->dma == DMA_ADDR_INVALID) || !usbreq->dma)) {
- if (ep->in)
- usbreq->dma = dma_map_single(&dev->pdev->dev,
- usbreq->buf,
- usbreq->length,
- DMA_TO_DEVICE);
- else
- usbreq->dma = dma_map_single(&dev->pdev->dev,
- usbreq->buf,
- usbreq->length,
- DMA_FROM_DEVICE);
+ if (!((unsigned long)(usbreq->buf) & 0x03)) {
+ if (ep->in)
+ usbreq->dma = dma_map_single(&dev->pdev->dev,
+ usbreq->buf,
+ usbreq->length,
+ DMA_TO_DEVICE);
+ else
+ usbreq->dma = dma_map_single(&dev->pdev->dev,
+ usbreq->buf,
+ usbreq->length,
+ DMA_FROM_DEVICE);
+ } else {
+ req->buf = kzalloc(usbreq->length, GFP_ATOMIC);
+ if (!req->buf) {
+ retval = -ENOMEM;
+ goto probe_end;
+ }
+ if (ep->in) {
+ memcpy(req->buf, usbreq->buf, usbreq->length);
+ req->dma = dma_map_single(&dev->pdev->dev,
+ req->buf,
+ usbreq->length,
+ DMA_TO_DEVICE);
+ } else
+ req->dma = dma_map_single(&dev->pdev->dev,
+ req->buf,
+ usbreq->length,
+ DMA_FROM_DEVICE);
+ }
req->dma_mapped = 1;
}
if (usbreq->length > 0) {
struct pch_udc_request *req;
struct pch_udc_dev *dev = ep->dev;
unsigned int count;
+ struct pch_udc_data_dma_desc *td;
+ dma_addr_t addr;
if (list_empty(&ep->queue))
return;
-
/* next request */
req = list_entry(ep->queue.next, struct pch_udc_request, queue);
- if ((req->td_data_last->status & PCH_UDC_BUFF_STS) !=
- PCH_UDC_BS_DMA_DONE)
- return;
pch_udc_clear_dma(ep->dev, DMA_DIR_RX);
pch_udc_ep_set_ddptr(ep, 0);
- if ((req->td_data_last->status & PCH_UDC_RXTX_STS) !=
- PCH_UDC_RTS_SUCC) {
- dev_err(&dev->pdev->dev, "Invalid RXTX status (0x%08x) "
- "epstatus=0x%08x\n",
- (req->td_data_last->status & PCH_UDC_RXTX_STS),
- (int)(ep->epsts));
- return;
- }
- count = req->td_data_last->status & PCH_UDC_RXTX_BYTES;
+ if ((req->td_data_last->status & PCH_UDC_BUFF_STS) ==
+ PCH_UDC_BS_DMA_DONE)
+ td = req->td_data_last;
+ else
+ td = req->td_data;
+ while (1) {
+ if ((td->status & PCH_UDC_RXTX_STS) != PCH_UDC_RTS_SUCC) {
+ dev_err(&dev->pdev->dev, "Invalid RXTX status=0x%08x "
+ "epstatus=0x%08x\n",
+ (req->td_data->status & PCH_UDC_RXTX_STS),
+ (int)(ep->epsts));
+ return;
+ }
+ if ((td->status & PCH_UDC_BUFF_STS) == PCH_UDC_BS_DMA_DONE)
+ if (td->status | PCH_UDC_DMA_LAST) {
+ count = td->status & PCH_UDC_RXTX_BYTES;
+ break;
+ }
+ if (td == req->td_data_last) {
+ dev_err(&dev->pdev->dev, "Not complete RX descriptor");
+ return;
+ }
+ addr = (dma_addr_t)td->next;
+ td = phys_to_virt(addr);
+ }
/* on 64k packets the RXBYTES field is zero */
if (!count && (req->req.length == UDC_DMA_MAXPACKET))
count = UDC_DMA_MAXPACKET;
req->td_data->status |= PCH_UDC_DMA_LAST;
- req->td_data_last->status |= PCH_UDC_BS_HST_BSY;
+ td->status |= PCH_UDC_BS_HST_BSY;
req->dma_going = 0;
req->req.actual = count;
/* Complete request queue */
empty_req_queue(ep);
}
- if (dev->driver && dev->driver->disconnect)
+ if (dev->driver && dev->driver->disconnect) {
+ spin_unlock(&dev->lock);
dev->driver->disconnect(&dev->gadget);
+ spin_lock(&dev->lock);
+ }
}
/**
return 0;
}
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int pch_udc_start(struct usb_gadget_driver *driver,
int (*bind)(struct usb_gadget *))
{
struct pch_udc_dev *dev = pch_udc;
dev->connected = 1;
return 0;
}
-EXPORT_SYMBOL(usb_gadget_probe_driver);
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int pch_udc_stop(struct usb_gadget_driver *driver)
{
struct pch_udc_dev *dev = pch_udc;
pch_udc_disable_interrupts(dev, UDC_DEVINT_MSK);
- /* Assues that there are no pending requets with this driver */
+ /* Assures that there are no pending requests with this driver */
+ driver->disconnect(&dev->gadget);
driver->unbind(&dev->gadget);
dev->gadget.dev.driver = NULL;
dev->driver = NULL;
pch_udc_set_disconnect(dev);
return 0;
}
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
static void pch_udc_shutdown(struct pci_dev *pdev)
{
{
struct pch_udc_dev *dev = pci_get_drvdata(pdev);
+ usb_del_gadget_udc(&dev->gadget);
+
/* gadget driver must not be registered */
if (dev->driver)
dev_err(&pdev->dev,
/* Put the device in disconnected state till a driver is bound */
pch_udc_set_disconnect(dev);
+ retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget);
+ if (retval)
+ goto finished;
return 0;
finished:
.class = (PCI_CLASS_SERIAL_USB << 8) | 0xfe,
.class_mask = 0xffffffff,
},
+ {
+ PCI_DEVICE(PCI_VENDOR_ID_ROHM, PCI_DEVICE_ID_ML7213_IOH_UDC),
+ .class = (PCI_CLASS_SERIAL_USB << 8) | 0xfe,
+ .class_mask = 0xffffffff,
+ },
+ {
+ PCI_DEVICE(PCI_VENDOR_ID_ROHM, PCI_DEVICE_ID_ML7831_IOH_UDC),
+ .class = (PCI_CLASS_SERIAL_USB << 8) | 0xfe,
+ .class_mask = 0xffffffff,
+ },
{ 0 },
};
module_exit(pch_udc_pci_exit);
MODULE_DESCRIPTION("Intel EG20T USB Device Controller");
-MODULE_AUTHOR("OKI SEMICONDUCTOR, <toshiharu-linux@dsn.okisemi.com>");
+MODULE_AUTHOR("LAPIS Semiconductor, <tomoya-linux@dsn.lapis-semi.com>");
MODULE_LICENSE("GPL");
projects / linux-flexiantxendom0.git / blobdiff