Cypress c67x00 (EZ-Host/EZ-OTG) support

Index: linux-2.6/drivers/usb/c67x00/c67x00.h
===================================================================
@@ -0,0 +1,285 @@
+/*
+ * c67x00.h: Cypress C67X00 USB register and field definitions
+ *
+ * Copyright (C) 2006-2008 Barco N.V.
+ *    Derived from the Cypress cy7c67200/300 ezusb linux driver and
+ *    based on multiple host controller drivers inside the linux kernel.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301  USA.
+ */
+
+#ifndef _USB_C67X00_H
+#define _USB_C67X00_H
+
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/completion.h>
+#include <linux/mutex.h>
+
+/* ---------------------------------------------------------------------
+ * Cypress C67x00 register definitions
+ */
+
+/* Hardware Revision Register */
+#define HW_REV_REG		0xC004
+
+/* General USB registers */
+/* ===================== */
+
+/* USB Control Register */
+#define USB_CTL_REG(x)		((x) ? 0xC0AA : 0xC08A)
+
+#define LOW_SPEED_PORT(x)	((x) ? 0x0800 : 0x0400)
+#define HOST_MODE		0x0200
+#define PORT_RES_EN(x)		((x) ? 0x0100 : 0x0080)
+#define SOF_EOP_EN(x)		((x) ? 0x0002 : 0x0001)
+
+/* USB status register - Notice it has different content in hcd/udc mode */
+#define USB_STAT_REG(x)		((x) ? 0xC0B0 : 0xC090)
+
+#define EP0_IRQ_FLG		0x0001
+#define EP1_IRQ_FLG		0x0002
+#define EP2_IRQ_FLG		0x0004
+#define EP3_IRQ_FLG		0x0008
+#define EP4_IRQ_FLG		0x0010
+#define EP5_IRQ_FLG		0x0020
+#define EP6_IRQ_FLG		0x0040
+#define EP7_IRQ_FLG		0x0080
+#define RESET_IRQ_FLG		0x0100
+#define SOF_EOP_IRQ_FLG		0x0200
+#define ID_IRQ_FLG		0x4000
+#define VBUS_IRQ_FLG		0x8000
+
+/* USB Host only registers */
+/* ======================= */
+
+/* Host n Control Register */
+#define HOST_CTL_REG(x)		((x) ? 0xC0A0 : 0xC080)
+
+#define PREAMBLE_EN		0x0080	/* Preamble enable */
+#define SEQ_SEL			0x0040	/* Data Toggle Sequence Bit Select */
+#define ISO_EN			0x0010	/* Isochronous enable  */
+#define ARM_EN			0x0001	/* Arm operation */
+
+/* Host n Interrupt Enable Register */
+#define HOST_IRQ_EN_REG(x)	((x) ? 0xC0AC : 0xC08C)
+
+#define SOF_EOP_IRQ_EN		0x0200	/* SOF/EOP Interrupt Enable  */
+#define SOF_EOP_TMOUT_IRQ_EN	0x0800	/* SOF/EOP Timeout Interrupt Enable  */
+#define ID_IRQ_EN		0x4000	/* ID interrupt enable */
+#define VBUS_IRQ_EN		0x8000	/* VBUS interrupt enable */
+#define DONE_IRQ_EN		0x0001	/* Done Interrupt Enable  */
+
+/* USB status register */
+#define HOST_STAT_MASK		0x02FD
+#define PORT_CONNECT_CHANGE(x)	((x) ? 0x0020 : 0x0010)
+#define PORT_SE0_STATUS(x)	((x) ? 0x0008 : 0x0004)
+
+/* Host Frame Register */
+#define HOST_FRAME_REG(x)	((x) ? 0xC0B6 : 0xC096)
+
+#define HOST_FRAME_MASK		0x07FF
+
+/* USB Peripheral only registers */
+/* ============================= */
+
+/* Device n Port Sel reg */
+#define DEVICE_N_PORT_SEL(x)	((x) ? 0xC0A4 : 0xC084)
+
+/* Device n Interrupt Enable Register */
+#define DEVICE_N_IRQ_EN_REG(x)	((x) ? 0xC0AC : 0xC08C)
+
+#define DEVICE_N_ENDPOINT_N_CTL_REG(dev, ep)	((dev)  		\
+						 ? (0x0280 + (ep << 4)) \
+						 : (0x0200 + (ep << 4)))
+#define DEVICE_N_ENDPOINT_N_STAT_REG(dev, ep)	((dev)			\
+						 ? (0x0286 + (ep << 4)) \
+						 : (0x0206 + (ep << 4)))
+
+#define DEVICE_N_ADDRESS(dev)	((dev) ? (0xC0AE) : (0xC08E))
+
+/* HPI registers */
+/* ============= */
+
+/* HPI Status register */
+#define SOFEOP_FLG(x)		(1 << ((x) ? 12 : 10))
+#define SIEMSG_FLG(x)		(1 << (4 + (x)))
+#define RESET_FLG(x)		((x) ? 0x0200 : 0x0002)
+#define DONE_FLG(x)		(1 << (2 + (x)))
+#define RESUME_FLG(x)		(1 << (6 + (x)))
+#define MBX_OUT_FLG		0x0001	/* Message out available */
+#define MBX_IN_FLG		0x0100
+#define ID_FLG			0x4000
+#define VBUS_FLG		0x8000
+
+/* Interrupt routing register */
+#define HPI_IRQ_ROUTING_REG	0x0142
+
+#define HPI_SWAP_ENABLE(x)	((x) ? 0x0100 : 0x0001)
+#define RESET_TO_HPI_ENABLE(x)	((x) ? 0x0200 : 0x0002)
+#define DONE_TO_HPI_ENABLE(x)	((x) ? 0x0008 : 0x0004)
+#define RESUME_TO_HPI_ENABLE(x)	((x) ? 0x0080 : 0x0040)
+#define SOFEOP_TO_HPI_EN(x)	((x) ? 0x2000 : 0x0800)
+#define SOFEOP_TO_CPU_EN(x)	((x) ? 0x1000 : 0x0400)
+#define ID_TO_HPI_ENABLE	0x4000
+#define VBUS_TO_HPI_ENABLE	0x8000
+
+/* SIE msg registers */
+#define SIEMSG_REG(x)		((x) ? 0x0148 : 0x0144)
+
+#define HUSB_TDListDone		0x1000
+
+#define SUSB_EP0_MSG		0x0001
+#define SUSB_EP1_MSG		0x0002
+#define SUSB_EP2_MSG		0x0004
+#define SUSB_EP3_MSG		0x0008
+#define SUSB_EP4_MSG		0x0010
+#define SUSB_EP5_MSG		0x0020
+#define SUSB_EP6_MSG		0x0040
+#define SUSB_EP7_MSG		0x0080
+#define SUSB_RST_MSG		0x0100
+#define SUSB_SOF_MSG		0x0200
+#define SUSB_CFG_MSG		0x0400
+#define SUSB_SUS_MSG		0x0800
+#define SUSB_ID_MSG	       	0x4000
+#define SUSB_VBUS_MSG		0x8000
+
+/* BIOS interrupt routines */
+
+#define SUSBx_RECEIVE_INT(x)	((x) ? 97 : 81)
+#define SUSBx_SEND_INT(x)	((x) ? 96 : 80)
+
+#define SUSBx_DEV_DESC_VEC(x)	((x) ? 0x00D4 : 0x00B4)
+#define SUSBx_CONF_DESC_VEC(x)	((x) ? 0x00D6 : 0x00B6)
+#define SUSBx_STRING_DESC_VEC(x) ((x) ? 0x00D8 : 0x00B8)
+
+#define CY_HCD_BUF_ADDR		0x500	/* Base address for host */
+#define SIE_TD_SIZE		0x200	/* size of the td list */
+#define SIE_TD_BUF_SIZE		0x400	/* size of the data buffer */
+
+#define SIE_TD_OFFSET(host)	((host) ? (SIE_TD_SIZE+SIE_TD_BUF_SIZE) : 0)
+#define SIE_BUF_OFFSET(host)	(SIE_TD_OFFSET(host) + SIE_TD_SIZE)
+
+/* Base address of HCD + 2 x TD_SIZE + 2 x TD_BUF_SIZE */
+#define CY_UDC_REQ_HEADER_BASE	0x1100
+/* 8- byte request headers for IN/OUT transfers */
+#define CY_UDC_REQ_HEADER_SIZE	8
+
+#define CY_UDC_REQ_HEADER_ADDR(ep_num)	(CY_UDC_REQ_HEADER_BASE + \
+					 ((ep_num) * CY_UDC_REQ_HEADER_SIZE))
+#define CY_UDC_DESC_BASE_ADDRESS	(CY_UDC_REQ_HEADER_ADDR(8))
+
+#define CY_UDC_BIOS_REPLACE_BASE	0x1800
+#define CY_UDC_REQ_BUFFER_BASE		0x2000
+#define CY_UDC_REQ_BUFFER_SIZE		0x0400
+#define CY_UDC_REQ_BUFFER_ADDR(ep_num)	(CY_UDC_REQ_BUFFER_BASE + \
+					 ((ep_num) * CY_UDC_REQ_BUFFER_SIZE))
+
+/* ---------------------------------------------------------------------
+ * Driver data structures
+ */
+
+struct c67x00_device;
+
+/**
+ * struct c67x00_sie - Common data associated with a SIE
+ * @lock: lock to protect this struct and the associated chip registers
+ * @private_data: subdriver dependent data
+ * @irq: subdriver dependent irq handler, set NULL when not used
+ * @dev: link to common driver structure
+ * @sie_num: SIE number on chip, starting from 0
+ * @mode: SIE mode (host/peripheral/otg/not used)
+ */
+struct c67x00_sie {
+	/* Entries to be used by the subdrivers */
+	spinlock_t lock;	/* protect this structure */
+	void *private_data;
+	void (*irq) (struct c67x00_sie *sie, u16 int_status, u16 msg);
+
+	/* Read only: */
+	struct c67x00_device *dev;
+	int sie_num;
+	int mode;
+};
+
+#define sie_dev(s)	(&(s)->dev->pdev->dev)
+
+/**
+ * struct c67x00_lcp
+ */
+struct c67x00_lcp {
+	/* Internal use only */
+	struct mutex mutex;
+	struct completion msg_received;
+	u16 last_msg;
+};
+
+/*
+ * struct c67x00_hpi
+ */
+struct c67x00_hpi {
+	void __iomem *base;
+	int regstep;
+	spinlock_t lock;
+	struct c67x00_lcp lcp;
+};
+
+#define C67X00_SIES	2
+#define C67X00_PORTS	2
+
+/**
+ * struct c67x00_device - Common data associated with a c67x00 instance
+ * @hpi: hpi addresses
+ * @sie: array of sie's on this chip
+ * @pdev: platform device of instance
+ * @pdata: configuration provided by the platform
+ */
+struct c67x00_device {
+	struct c67x00_hpi hpi;
+	struct c67x00_sie sie[C67X00_SIES];
+	struct platform_device *pdev;
+	struct c67x00_platform_data *pdata;
+};
+
+/* ---------------------------------------------------------------------
+ * Low level interface functions
+ */
+
+/* Host Port Interface (HPI) functions */
+u16 c67x00_ll_hpi_status(struct c67x00_device *dev);
+void c67x00_ll_hpi_reg_init(struct c67x00_device *dev);
+void c67x00_ll_hpi_enable_sofeop(struct c67x00_sie *sie);
+void c67x00_ll_hpi_disable_sofeop(struct c67x00_sie *sie);
+
+/* General functions */
+u16 c67x00_ll_fetch_siemsg(struct c67x00_device *dev, int sie_num);
+u16 c67x00_ll_get_usb_ctl(struct c67x00_sie *sie);
+void c67x00_ll_usb_clear_status(struct c67x00_sie *sie, u16 bits);
+u16 c67x00_ll_usb_get_status(struct c67x00_sie *sie);
+void c67x00_ll_write_mem_le16(struct c67x00_device *dev, u16 addr,
+			      void *data, int len);
+void c67x00_ll_read_mem_le16(struct c67x00_device *dev, u16 addr,
+			     void *data, int len);
+
+/* Called by c67x00_irq to handle lcp interrupts */
+void c67x00_ll_irq(struct c67x00_device *dev, u16 int_status);
+
+/* Setup and teardown */
+void c67x00_ll_init(struct c67x00_device *dev);
+void c67x00_ll_release(struct c67x00_device *dev);
+int c67x00_ll_reset(struct c67x00_device *dev);
+
+#endif				/* _USB_C67X00_H */

405 lines not on this page · raw message

Index: linux-2.6/drivers/usb/c67x00/c67x00-drv.c
===================================================================
@@ -0,0 +1,229 @@
+/*
+ * c67x00-drv.c: Cypress C67X00 USB Common infrastructure
+ *
+ * Copyright (C) 2006-2008 Barco N.V.
+ *    Derived from the Cypress cy7c67200/300 ezusb linux driver and
+ *    based on multiple host controller drivers inside the linux kernel.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301  USA.
+ */
+
+/*
+ * This file implements the common infrastructure for using the c67x00.
+ * It is both the link between the platform configuration and subdrivers and
+ * the link between the common hardware parts and the subdrivers (e.g.
+ * interrupt handling).
+ *
+ * The c67x00 has 2 SIE's (serial interface engine) wich can be configured
+ * to be host, device or OTG (with some limitations, E.G. only SIE1 can be OTG).
+ *
+ * Depending on the platform configuration, the SIE's are created and
+ * the corresponding subdriver is initialized (c67x00_probe_sie).
+ */
+
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/usb.h>
+#include <linux/usb/c67x00.h>
+#include <asm/io.h>
+
+#include "c67x00.h"
+
+static void c67x00_probe_sie(struct c67x00_sie *sie,
+			     struct c67x00_device *dev, int sie_num)
+{
+	spin_lock_init(&sie->lock);
+	sie->dev = dev;
+	sie->sie_num = sie_num;
+	sie->mode = c67x00_sie_config(dev->pdata->sie_config, sie_num);
+
+	switch (sie->mode) {
+	case C67X00_SIE_UNUSED:
+		dev_info(sie_dev(sie),
+			 "Not using SIE %d as requested\n", sie->sie_num);
+		break;
+
+	default:
+		dev_err(sie_dev(sie),
+			"Unsupported configuration: 0x%x for SIE %d\n",
+			sie->mode, sie->sie_num);
+		break;
+	}
+}
+
+static void c67x00_remove_sie(struct c67x00_sie *sie)
+{
+}
+
+static irqreturn_t c67x00_irq(int irq, void *__dev)
+{
+	struct c67x00_device *c67x00 = __dev;
+	struct c67x00_sie *sie;
+	u16 msg, int_status;
+	int i, count = 8;
+
+	int_status = c67x00_ll_hpi_status(c67x00);
+	if (!int_status)
+		return IRQ_NONE;
+
+	while (int_status != 0 && (count-- >= 0)) {
+		c67x00_ll_irq(c67x00, int_status);
+		for (i = 0; i < C67X00_SIES; i++) {
+			sie = &c67x00->sie[i];
+			msg = 0;
+			if (int_status & SIEMSG_FLG(i))
+				msg = c67x00_ll_fetch_siemsg(c67x00, i);
+			if (sie->irq)
+				sie->irq(sie, int_status, msg);
+		}
+		int_status = c67x00_ll_hpi_status(c67x00);
+	}
+
+	if (int_status)
+		dev_warn(&c67x00->pdev->dev, "Not all interrupts handled! "
+			 "status = 0x%04x\n", int_status);
+
+	return IRQ_HANDLED;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int __devinit c67x00_drv_probe(struct platform_device *pdev)
+{
+	struct c67x00_device *c67x00;
+	struct c67x00_platform_data *pdata;
+	struct resource *res, *res2;
+	int ret, i;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENODEV;
+
+	res2 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!res2)
+		return -ENODEV;
+
+	pdata = pdev->dev.platform_data;
+	if (!pdata)
+		return -ENODEV;
+
+	c67x00 = kzalloc(sizeof(*c67x00), GFP_KERNEL);
+	if (!c67x00)
+		return -ENOMEM;
+
+	if (!request_mem_region(res->start, res->end - res->start + 1,
+				pdev->name)) {
+		dev_err(&pdev->dev, "Memory region busy\n");
+		ret = -EBUSY;
+		goto request_mem_failed;
+	}
+	c67x00->hpi.base = ioremap(res->start, res->end - res->start + 1);
+	if (!c67x00->hpi.base) {
+		dev_err(&pdev->dev, "Unable to map HPI registers\n");
+		ret = -EIO;
+		goto map_failed;
+	}
+
+	spin_lock_init(&c67x00->hpi.lock);
+	c67x00->hpi.regstep = pdata->hpi_regstep;
+	c67x00->pdata = pdev->dev.platform_data;
+	c67x00->pdev = pdev;
+
+	c67x00_ll_init(c67x00);
+	c67x00_ll_hpi_reg_init(c67x00);
+
+	ret = request_irq(res2->start, c67x00_irq, 0, pdev->name, c67x00);
+	if (ret) {
+		dev_err(&pdev->dev, "Cannot claim IRQ\n");
+		goto request_irq_failed;
+	}
+
+	ret = c67x00_ll_reset(c67x00);
+	if (ret) {
+		dev_err(&pdev->dev, "Device reset failed\n");
+		goto reset_failed;
+	}
+
+	for (i = 0; i < C67X00_SIES; i++)
+		c67x00_probe_sie(&c67x00->sie[i], c67x00, i);
+
+	platform_set_drvdata(pdev, c67x00);
+
+	return 0;
+
+ reset_failed:
+	free_irq(res2->start, c67x00);
+ request_irq_failed:
+	iounmap(c67x00->hpi.base);
+ map_failed:
+	release_mem_region(res->start, res->end - res->start + 1);
+ request_mem_failed:
+	kfree(c67x00);
+
+	return ret;
+}
+
+static int __devexit c67x00_drv_remove(struct platform_device *pdev)
+{
+	struct c67x00_device *c67x00 = platform_get_drvdata(pdev);
+	struct resource *res;
+	int i;
+
+	for (i = 0; i < C67X00_SIES; i++)
+		c67x00_remove_sie(&c67x00->sie[i]);
+
+	c67x00_ll_release(c67x00);
+
+	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (res)
+		free_irq(res->start, c67x00);
+
+	iounmap(c67x00->hpi.base);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (res)
+		release_mem_region(res->start, res->end - res->start + 1);
+
+	kfree(c67x00);
+
+	return 0;
+}
+
+static struct platform_driver c67x00_driver = {
+	.probe	= c67x00_drv_probe,
+	.remove	= __devexit_p(c67x00_drv_remove),
+	.driver	= {
+		.owner = THIS_MODULE,
+		.name = "c67x00",
+	},
+};
+
+static int __init c67x00_init(void)
+{
+	return platform_driver_register(&c67x00_driver);
+}
+
+static void __exit c67x00_exit(void)
+{
+	platform_driver_unregister(&c67x00_driver);
+}
+
+module_init(c67x00_init);
+module_exit(c67x00_exit);
+
+MODULE_AUTHOR("Peter Korsgaard, Jan Veldeman, Grant Likely");
+MODULE_DESCRIPTION("Cypress C67X00 USB Controller Driver");
+MODULE_LICENSE("GPL");

48 lines not on this page · raw message

Index: linux-2.6/drivers/usb/c67x00/c67x00-hcd.c
===================================================================
@@ -0,0 +1,412 @@
+/*
+ * c67x00-hcd.c: Cypress C67X00 USB Host Controller Driver
+ *
+ * Copyright (C) 2006-2008 Barco N.V.
+ *    Derived from the Cypress cy7c67200/300 ezusb linux driver and
+ *    based on multiple host controller drivers inside the linux kernel.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301  USA.
+ */
+
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/usb.h>
+
+#include "c67x00.h"
+#include "c67x00-hcd.h"
+
+/* --------------------------------------------------------------------------
+ * Root Hub Support
+ */
+
+static __u8 c67x00_hub_des[] = {
+	0x09,			/*  __u8  bLength; */
+	0x29,			/*  __u8  bDescriptorType; Hub-descriptor */
+	0x02,			/*  __u8  bNbrPorts; */
+	0x00,			/* __u16  wHubCharacteristics; */
+	0x00,			/*   (per-port OC, no power switching) */
+	0x32,			/*  __u8  bPwrOn2pwrGood; 2ms */
+	0x00,			/*  __u8  bHubContrCurrent; 0 mA */
+	0x00,			/*  __u8  DeviceRemovable; ** 7 Ports max ** */
+	0xff,			/*  __u8  PortPwrCtrlMask; ** 7 ports max ** */
+};
+
+static void c67x00_hub_reset_host_port(struct c67x00_sie *sie, int port)
+{
+	struct c67x00_hcd *c67x00 = sie->private_data;
+	unsigned long flags;
+
+	c67x00_ll_husb_reset(sie, port);
+
+	spin_lock_irqsave(&c67x00->lock, flags);
+	c67x00_ll_husb_reset_port(sie, port);
+	spin_unlock_irqrestore(&c67x00->lock, flags);
+
+	c67x00_ll_set_husb_eot(sie->dev, DEFAULT_EOT);
+}
+
+static int c67x00_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+	struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
+	struct c67x00_sie *sie = c67x00->sie;
+	u16 status;
+	int i;
+
+	*buf = 0;
+	status = c67x00_ll_usb_get_status(sie);
+	for (i = 0; i < C67X00_PORTS; i++)
+		if (status & PORT_CONNECT_CHANGE(i))
+			*buf |= (1 << i);
+
+	/* bit 0 denotes hub change, b1..n port change */
+	*buf <<= 1;
+
+	return !!*buf;
+}
+
+static int c67x00_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+			      u16 wIndex, char *buf, u16 wLength)
+{
+	struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
+	struct c67x00_sie *sie = c67x00->sie;
+	u16 status, usb_status;
+	int len = 0;
+	unsigned int port = wIndex-1;
+	u16 wPortChange, wPortStatus;
+
+	switch (typeReq) {
+
+	case GetHubStatus:
+		*(__le32 *) buf = cpu_to_le32(0);
+		len = 4;		/* hub power */
+		break;
+
+	case GetPortStatus:
+		if (wIndex > C67X00_PORTS)
+			return -EPIPE;
+
+		status = c67x00_ll_usb_get_status(sie);
+		usb_status = c67x00_ll_get_usb_ctl(sie);
+
+		wPortChange = 0;
+		if (status & PORT_CONNECT_CHANGE(port))
+			wPortChange |= USB_PORT_STAT_C_CONNECTION;
+
+		wPortStatus = USB_PORT_STAT_POWER;
+		if (!(status & PORT_SE0_STATUS(port)))
+			wPortStatus |= USB_PORT_STAT_CONNECTION;
+		if (usb_status & LOW_SPEED_PORT(port)) {
+			wPortStatus |= USB_PORT_STAT_LOW_SPEED;
+			c67x00->low_speed_ports |= (1 << port);
+		} else
+			c67x00->low_speed_ports &= ~(1 << port);
+
+		if (usb_status & SOF_EOP_EN(port))
+			wPortStatus |= USB_PORT_STAT_ENABLE;
+
+		*(__le16 *) buf = cpu_to_le16(wPortStatus);
+		*(__le16 *) (buf + 2) = cpu_to_le16(wPortChange);
+		len = 4;
+		break;
+
+	case SetHubFeature:	/* We don't implement these */
+	case ClearHubFeature:
+		switch (wValue) {
+		case C_HUB_OVER_CURRENT:
+		case C_HUB_LOCAL_POWER:
+			len = 0;
+			break;
+
+		default:
+			return -EPIPE;
+		}
+		break;
+
+	case SetPortFeature:
+		if (wIndex > C67X00_PORTS)
+			return -EPIPE;
+
+		switch (wValue) {
+		case USB_PORT_FEAT_SUSPEND:
+			dev_dbg(c67x00_hcd_dev(c67x00),
+				"SetPortFeature %d (SUSPEND)\n", port);
+			len = 0;
+			break;
+
+		case USB_PORT_FEAT_RESET:
+			c67x00_hub_reset_host_port(sie, port);
+			len = 0;
+			break;
+
+		case USB_PORT_FEAT_POWER:
+			/* Power always enabled */
+			len = 0;
+			break;
+
+		default:
+			dev_dbg(c67x00_hcd_dev(c67x00),
+				"%s: SetPortFeature %d (0x%04x) Error!\n",
+				__func__, port, wValue);
+			return -EPIPE;
+		}
+		break;
+
+	case ClearPortFeature:
+		if (wIndex > C67X00_PORTS)
+			return -EPIPE;
+
+		switch (wValue) {
+		case USB_PORT_FEAT_ENABLE:
+			/* Reset the port so that the c67x00 also notices the
+			 * disconnect */
+			c67x00_hub_reset_host_port(sie, port);
+			len = 0;
+			break;
+
+		case USB_PORT_FEAT_C_ENABLE:
+			dev_dbg(c67x00_hcd_dev(c67x00),
+				"ClearPortFeature (%d): C_ENABLE\n", port);
+			len = 0;
+			break;
+
+		case USB_PORT_FEAT_SUSPEND:
+			dev_dbg(c67x00_hcd_dev(c67x00),
+				"ClearPortFeature (%d): SUSPEND\n", port);
+			len = 0;
+			break;
+
+		case USB_PORT_FEAT_C_SUSPEND:
+			dev_dbg(c67x00_hcd_dev(c67x00),
+				"ClearPortFeature (%d): C_SUSPEND\n", port);
+			len = 0;
+			break;
+
+		case USB_PORT_FEAT_POWER:
+			dev_dbg(c67x00_hcd_dev(c67x00),
+				"ClearPortFeature (%d): POWER\n", port);
+			return -EPIPE;
+
+		case USB_PORT_FEAT_C_CONNECTION:
+			c67x00_ll_usb_clear_status(sie,
+						   PORT_CONNECT_CHANGE(port));
+			len = 0;
+			break;
+
+		case USB_PORT_FEAT_C_OVER_CURRENT:
+			dev_dbg(c67x00_hcd_dev(c67x00),
+				"ClearPortFeature (%d): OVER_CURRENT\n", port);
+			len = 0;
+			break;
+
+		case USB_PORT_FEAT_C_RESET:
+			dev_dbg(c67x00_hcd_dev(c67x00),
+				"ClearPortFeature (%d): C_RESET\n", port);
+			len = 0;
+			break;
+
+		default:
+			dev_dbg(c67x00_hcd_dev(c67x00),
+				"%s: ClearPortFeature %d (0x%04x) Error!\n",
+				__func__, port, wValue);
+			return -EPIPE;
+		}
+		break;
+
+	case GetHubDescriptor:
+		len = min_t(unsigned int, sizeof(c67x00_hub_des), wLength);
+		memcpy(buf, c67x00_hub_des, len);
+		break;
+
+	default:
+		dev_dbg(c67x00_hcd_dev(c67x00), "%s: unknown\n", __func__);
+		return -EPIPE;
+	}
+
+	return 0;
+}
+
+/* ---------------------------------------------------------------------
+ * Main part of host controller driver
+ */
+
+/**
+ * c67x00_hcd_irq
+ *
+ * This function is called from the interrupt handler in c67x00-drv.c
+ */
+static void c67x00_hcd_irq(struct c67x00_sie *sie, u16 int_status, u16 msg)
+{
+	struct c67x00_hcd *c67x00 = sie->private_data;
+	struct usb_hcd *hcd = c67x00_hcd_to_hcd(c67x00);
+
+	/* Handle sie message flags */
+	if (msg) {
+		if (msg & HUSB_TDListDone)
+			c67x00_sched_kick(c67x00);
+		else
+			dev_warn(c67x00_hcd_dev(c67x00),
+				 "Unknown SIE msg flag(s): 0x%04x\n", msg);
+	}
+
+	if (unlikely(hcd->state == HC_STATE_HALT))
+		return;
+
+	if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))
+		return;
+
+	/* Handle Start of frame events */
+	if (int_status & SOFEOP_FLG(sie->sie_num)) {
+		c67x00_ll_usb_clear_status(sie, SOF_EOP_IRQ_FLG);
+		c67x00_sched_kick(c67x00);
+		set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
+	}
+}
+
+/**
+ * c67x00_hcd_start: Host controller start hook
+ */
+static int c67x00_hcd_start(struct usb_hcd *hcd)
+{
+	hcd->uses_new_polling = 1;
+	hcd->state = HC_STATE_RUNNING;
+	hcd->poll_rh = 1;
+
+	return 0;
+}
+
+/**
+ * c67x00_hcd_stop: Host controller stop hook
+ */
+static void c67x00_hcd_stop(struct usb_hcd *hcd)
+{
+	/* Nothing to do */
+}
+
+static int c67x00_hcd_get_frame(struct usb_hcd *hcd)
+{
+	struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
+	u16 temp_val;
+
+	dev_dbg(c67x00_hcd_dev(c67x00), "%s\n", __func__);
+	temp_val = c67x00_ll_husb_get_frame(c67x00->sie);
+	temp_val &= HOST_FRAME_MASK;
+	return temp_val ? (temp_val - 1) : HOST_FRAME_MASK;
+}
+
+static struct hc_driver c67x00_hc_driver = {
+	.description	= "c67x00-hcd",
+	.product_desc	= "Cypress C67X00 Host Controller",
+	.hcd_priv_size	= sizeof(struct c67x00_hcd),
+	.flags		= HCD_USB11 | HCD_MEMORY,
+
+	/*
+	 * basic lifecycle operations
+	 */
+	.start		= c67x00_hcd_start,
+	.stop		= c67x00_hcd_stop,
+
+	/*
+	 * managing i/o requests and associated device resources
+	 */
+	.urb_enqueue	= c67x00_urb_enqueue,
+	.urb_dequeue	= c67x00_urb_dequeue,
+	.endpoint_disable = c67x00_endpoint_disable,
+
+	/*
+	 * scheduling support
+	 */
+	.get_frame_number = c67x00_hcd_get_frame,
+
+	/*
+	 * root hub support
+	 */
+	.hub_status_data = c67x00_hub_status_data,
+	.hub_control	= c67x00_hub_control,
+};
+
+/* ---------------------------------------------------------------------
+ * Setup/Teardown routines
+ */
+
+int c67x00_hcd_probe(struct c67x00_sie *sie)
+{
+	struct c67x00_hcd *c67x00;
+	struct usb_hcd *hcd;
+	unsigned long flags;
+	int retval;
+
+	if (usb_disabled())
+		return -ENODEV;
+
+	hcd = usb_create_hcd(&c67x00_hc_driver, sie_dev(sie), "c67x00_sie");
+	if (!hcd) {
+		retval = -ENOMEM;
+		goto err0;
+	}
+	c67x00 = hcd_to_c67x00_hcd(hcd);
+
+	spin_lock_init(&c67x00->lock);
+	c67x00->sie = sie;
+
+	INIT_LIST_HEAD(&c67x00->list[PIPE_ISOCHRONOUS]);
+	INIT_LIST_HEAD(&c67x00->list[PIPE_INTERRUPT]);
+	INIT_LIST_HEAD(&c67x00->list[PIPE_CONTROL]);
+	INIT_LIST_HEAD(&c67x00->list[PIPE_BULK]);
+	c67x00->urb_count = 0;
+	INIT_LIST_HEAD(&c67x00->td_list);
+	c67x00->td_base_addr = CY_HCD_BUF_ADDR + SIE_TD_OFFSET(sie->sie_num);
+	c67x00->buf_base_addr = CY_HCD_BUF_ADDR + SIE_BUF_OFFSET(sie->sie_num);
+	c67x00->max_frame_bw = MAX_FRAME_BW_STD;
+
+	c67x00_ll_husb_init_host_port(sie);
+
+	init_completion(&c67x00->endpoint_disable);
+	retval = c67x00_sched_start_scheduler(c67x00);
+	if (retval)
+		goto err1;
+
+	retval = usb_add_hcd(hcd, 0, 0);
+	if (retval) {
+		dev_dbg(sie_dev(sie), "%s: usb_add_hcd returned %d\n",
+			__func__, retval);
+		goto err2;
+	}
+
+	spin_lock_irqsave(&sie->lock, flags);
+	sie->private_data = c67x00;
+	sie->irq = c67x00_hcd_irq;
+	spin_unlock_irqrestore(&sie->lock, flags);
+
+	return retval;
+
+ err2:
+	c67x00_sched_stop_scheduler(c67x00);
+ err1:
+	usb_put_hcd(hcd);
+ err0:
+	return retval;
+}
+
+/* may be called with controller, bus, and devices active */
+void c67x00_hcd_remove(struct c67x00_sie *sie)
+{
+	struct c67x00_hcd *c67x00 = sie->private_data;
+	struct usb_hcd *hcd = c67x00_hcd_to_hcd(c67x00);
+
+	c67x00_sched_stop_scheduler(c67x00);
+	usb_remove_hcd(hcd);
+	usb_put_hcd(hcd);
+}

133 lines not on this page · raw message

1,170 lines not on this page · raw message

Index: linux-2.6/drivers/usb/c67x00/c67x00-drv.c
===================================================================
@@ -41,6 +41,7 @@
 #include <asm/io.h>
 
 #include "c67x00.h"
+#include "c67x00-hcd.h"
 
 static void c67x00_probe_sie(struct c67x00_sie *sie,
 			     struct c67x00_device *dev, int sie_num)

@@ -51,6 +52,10 @@
 	sie->mode = c67x00_sie_config(dev->pdata->sie_config, sie_num);
 
 	switch (sie->mode) {
+	case C67X00_SIE_HOST:
+		c67x00_hcd_probe(sie);
+		break;
+
 	case C67X00_SIE_UNUSED:
 		dev_info(sie_dev(sie),
 			 "Not using SIE %d as requested\n", sie->sie_num);

@@ -66,6 +71,14 @@
 
 static void c67x00_remove_sie(struct c67x00_sie *sie)
 {
+	switch (sie->mode) {
+	case C67X00_SIE_HOST:
+		c67x00_hcd_remove(sie);
+		break;
+
+	default:
+		break;
+	}
 }
 
 static irqreturn_t c67x00_irq(int irq, void *__dev)

Index: linux-2.6/drivers/usb/c67x00/c67x00.h
===================================================================
@@ -274,6 +274,15 @@
 void c67x00_ll_read_mem_le16(struct c67x00_device *dev, u16 addr,
 			     void *data, int len);
 
+/* Host specific functions */
+void c67x00_ll_set_husb_eot(struct c67x00_device *dev, u16 value);
+void c67x00_ll_husb_reset(struct c67x00_sie *sie, int port);
+void c67x00_ll_husb_set_current_td(struct c67x00_sie *sie, u16 addr);
+u16 c67x00_ll_husb_get_current_td(struct c67x00_sie *sie);
+u16 c67x00_ll_husb_get_frame(struct c67x00_sie *sie);
+void c67x00_ll_husb_init_host_port(struct c67x00_sie *sie);
+void c67x00_ll_husb_reset_port(struct c67x00_sie *sie, int port);
+
 /* Called by c67x00_irq to handle lcp interrupts */
 void c67x00_ll_irq(struct c67x00_device *dev, u16 int_status);
 

81 lines not on this page · raw message

Index: linux-2.6/drivers/usb/c67x00/c67x00-udc.c
===================================================================
@@ -0,0 +1,905 @@
+/*
+ * c67x00-udc.c: Cypress C67X00 USB device controller
+ *
+ * Copyright (C) 2006-2008 Barco N.V.
+ *    Derived from the Cypress cy7c67200/300 ezusb linux driver and
+ *    based on multiple device controller drivers inside the linux kernel.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301  USA.
+ */
+
+#include <linux/device.h>
+#include <linux/usb.h>
+#include <linux/usb/c67x00.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/ch9.h>
+
+#include "c67x00.h"
+#include "c67x00-udc.h"
+
+/* Defined in DEVICE n ENDPOINT STATUS REGISTERS */
+#define OVERFLOW_FLG		0x0800	/* Receive overflow */
+#define UNDERFLOW_FLG		0x0400	/* Receive underflow */
+#define OUT_EXCEPTION_FLG	0x0200	/* OUT received when armed for IN */
+#define IN_EXCEPTION_FLG	0x0100	/* IN received when armed for OUT */
+#define STALL_FLG		0x0080	/* Stall sent */
+#define NAK_FLG			0x0040	/* NAK sent */
+#define LENGTH_EXCEPT_FLG	0x0020	/* Overflow or Underflow occured */
+#define SETUP_FLG		0x0010	/* SETUP packet received */
+#define SEQ_STAT		0x0008	/* Last Data Toggle Sequence bit sent
+						or received */
+#define TIMEOUT_FLG		0x0004	/* Last transmission timed out */
+#define ERROR_FLG		0x0002	/* CRC Err detected in last
+						reception*/
+#define ACK_FLG			0x0001	/* Last transaction ACK'D (sent
+						or received) */
+
+/* Defined in DEVICE n ENDPOINT CONTROL REGISTERS */
+#define DIR_SEL_IN	0x0004	/* Last transmission timed out */
+#define EP_ENABLE	0x0002	/* Enable Endpoint */
+
+
+
+struct c67x00_request {
+	struct usb_request req;
+	struct list_head queue;
+};
+
+
+
+struct c67x00_udc_ep {
+	struct usb_ep ep;
+	struct c67x00_udc *udc;
+
+	struct list_head queue;
+	int ep_num;
+	int is_ep_in;
+	int enable;
+	int stopped;
+	int start_io;
+};
+
+#define C67X00_MAX_NB_END_POINTS 8
+
+struct c67x00_udc {
+	spinlock_t lock;
+	struct c67x00_sie *sie;
+	struct usb_gadget gadget;
+	struct usb_gadget_driver *driver;
+	struct c67x00_udc_ep ep[C67X00_MAX_NB_END_POINTS];
+	struct work_struct io_work;
+	int config_nr;
+	/* The highest string descriptor entry
+	   (used to retrieve descriptors from gadget driver) */
+	int top_str_id;
+	u16 string_desc_addr;
+};
+
+const static unsigned char get_descriptor_device[] = {
+	USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+	USB_REQ_GET_DESCRIPTOR,
+	0x00,
+	USB_DT_DEVICE,
+	0x00,
+	0x00,
+	0x12,
+	0x00
+};
+
+const static unsigned char get_descriptor_config[] = {
+	USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+	USB_REQ_GET_DESCRIPTOR,
+	0x00,
+	USB_DT_CONFIG,
+	0x00,
+	0x00,
+	0x40,
+	0x00
+};
+
+static unsigned char get_descriptor_string[] = {
+	USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+	USB_REQ_GET_DESCRIPTOR,
+	0x00,
+	USB_DT_STRING,
+	0x00,
+	0x00,
+	0xFF,
+	0x00
+};
+
+#define SIEx_DEV_DESC_LOC(x)	((x) ? (CY_UDC_DESC_BASE_ADDRESS + 0x200) \
+				 : CY_UDC_DESC_BASE_ADDRESS)
+#define SIEx_CONF_DESC_LOC(x)	(SIEx_DEV_DESC_LOC(x) + 32)
+
+/* ------------------------------------------------------------------------- */
+/* gadget ops */
+
+static int c67x00_get_frame(struct usb_gadget *_gadget)
+{
+	printk(KERN_DEBUG "c67x00-udc : c67x00_get_frame\n");
+	return -ENODEV;
+}
+
+static int c67x00_wakeup(struct usb_gadget *_gadget)
+{
+	printk(KERN_DEBUG "c67x00-udc : c67x00_wakeup\n");
+	return -ENODEV;
+}
+
+static int c67x00_selfpowered(struct usb_gadget *_gadget,
+			      int is_selfpowered)
+{
+	printk(KERN_DEBUG "c67x00-udc : c67x00_selfpowered\n");
+	return -ENODEV;
+}
+
+static int c67x00_vbus_session(struct usb_gadget *_gadget, int is_active)
+{
+	printk(KERN_DEBUG "c67x00-udc : c67x00_vbus_session\n");
+	return -ENODEV;
+}
+
+static int c67x00_pullup(struct usb_gadget *_gadget, int is_on)
+{
+	printk(KERN_DEBUG "c67x00-udc : c67x00_pullup\n");
+	return -ENODEV;
+}
+
+
+static const struct usb_gadget_ops c67x00_udc_ops = {
+	.get_frame = c67x00_get_frame,
+	.wakeup = c67x00_wakeup,
+	.set_selfpowered = c67x00_selfpowered,
+	.vbus_session = c67x00_vbus_session,
+	.pullup = c67x00_pullup
+};
+
+
+
+/*
+ * the sie and gadget_driver get probed/registered from 2 totally independant
+ * places, this datastructure binds them together
+ */
+static struct c67x00_udc controller = {
+	.gadget = {
+		.ops = &c67x00_udc_ops,
+		.name = "c67x00_udc",
+		.speed = USB_SPEED_FULL,
+		.is_dualspeed = 1,
+		.is_a_peripheral = 1,
+		.dev = {
+			.bus_id = "gadget",
+		},
+	},
+};
+
+
+/*----------------------------------------------------------------------------*/
+
+static void c67x00_udc_set_configuration(struct c67x00_sie *sie, u16 config)
+{
+	struct usb_ctrlrequest request;
+	struct c67x00_udc *udc = sie->private_data;
+
+	dev_dbg(sie_dev(sie), "set configuration %d\n", config);
+
+	request.bRequest = USB_REQ_SET_CONFIGURATION;
+	request.bRequestType = 0;
+	request.wValue = cpu_to_le16(config);
+	udc->driver->setup(&udc->gadget, &request);
+}
+
+static int c67x00_udc_parse_descriptor(struct c67x00_udc *udc,
+				       struct c67x00_request *req)
+{
+	int retval = 0;
+	u8 *buf = req->req.buf;
+
+	if (req->req.length < 2)
+		return 0;
+
+	switch (buf[1]) {
+	case USB_DT_DEVICE: {
+		struct usb_device_descriptor *desc = req->req.buf;
+
+		/* Look for the highest stringIndex */
+		if (desc->iManufacturer > udc->top_str_id)
+			udc->top_str_id = desc->iManufacturer;
+		if (desc->iProduct > udc->top_str_id)
+			udc->top_str_id = desc->iProduct;
+		if (desc->iSerialNumber > udc->top_str_id)
+			udc->top_str_id = desc->iSerialNumber;
+
+		/* Write descriptor to C67x00 memory */
+		c67x00_ll_write_mem_le16(udc->sie->dev,
+					 SIEx_DEV_DESC_LOC(udc->sie->sie_num),
+					 req->req.buf, req->req.length);
+
+		/* Write vector address to c67x00 */
+		c67x00_ll_set_device_descriptor_location(
+			udc->sie, SIEx_DEV_DESC_LOC(udc->sie->sie_num));
+
+		retval = 1;
+		break;
+	}
+
+	case USB_DT_CONFIG: {
+		struct usb_config_descriptor *desc = req->req.buf;
+		int offset;
+		u16 length;
+
+		/* store config number to pass to the gadget driver,
+		   once the c67x00 is configured */
+		udc->config_nr = desc->bConfigurationValue;
+
+		length = le16_to_cpu(desc->wTotalLength);
+
+		if (desc->iConfiguration > udc->top_str_id)
+			udc->top_str_id = desc->iConfiguration;
+
+		offset = desc->bLength;
+
+		while (offset < length) {
+			if (buf[offset + 1] == USB_DT_INTERFACE) {
+				struct usb_interface_descriptor *if_desc =
+					(struct usb_interface_descriptor *)
+					(buf + offset);
+
+				if (if_desc->iInterface > udc->top_str_id)
+					udc->top_str_id = if_desc->iInterface;
+			}
+
+			offset += buf[offset];
+		}
+
+		if ((length % 8) == 0) {
+			/* BIOS can't handle descriptors with size multiple
+			   of xfer size */
+			length += 1;
+			/* desc->wTotalLength = cpu_to_le16(length); */
+		}
+
+		/* BIOS can only handle configuration 1,
+		   so make sure the config nr is 1 */
+		desc->bConfigurationValue = 1;
+
+		c67x00_ll_write_mem_le16(udc->sie->dev,
+					 SIEx_CONF_DESC_LOC(udc->sie->sie_num),
+					 req->req.buf, length);
+
+		/* Write vector address to SW interrupt */
+		c67x00_ll_set_configuration_descriptor_location(
+			udc->sie, SIEx_CONF_DESC_LOC(udc->sie->sie_num));
+
+		/* String descriptors start behind configuration descriptor */
+		udc->string_desc_addr =
+			SIEx_CONF_DESC_LOC(udc->sie->sie_num) + length;
+
+		/* Make sure the address is even */
+		if (udc->string_desc_addr & 0x01)
+			udc->string_desc_addr++;
+
+		/* Write string descriptor vector address */
+		c67x00_ll_set_string_descriptor_location(
+			udc->sie, udc->string_desc_addr);
+
+		retval = 1;
+		break;
+	}
+
+	case USB_DT_STRING:
+		/* Write string descriptor */
+		c67x00_ll_write_mem_le16(udc->sie->dev, udc->string_desc_addr,
+					 req->req.buf, req->req.length);
+
+		/* set address to end of this descriptor */
+		udc->string_desc_addr += req->req.length;
+
+		retval = 1;
+		break;
+	}
+
+	return retval;
+}
+
+/*
+ * done - retire a request; caller blocked irqs
+ */
+static void c67x00_udc_done(struct c67x00_udc_ep *ep,
+			    struct c67x00_request *req, int status)
+{
+	int stopped = ep->stopped;
+
+	list_del_init(&req->queue);
+
+	if (likely(req->req.status == -EINPROGRESS))
+		req->req.status = status;
+	else
+		status = req->req.status;
+/*
+	if (status && status != -ESHUTDOWN)
+		DBG(DBG_VERBOSE, "complete %s req %p stat %d len %u/%u\n",
+			ep->ep.name, &req->req, status,
+			req->req.actual, req->req.length);
+*/
+
+	/* don't modify queue heads during completion callback */
+	ep->stopped = 1;
+	req->req.complete(&ep->ep, &req->req);
+	ep->stopped = stopped;
+}
+
+/*----------- UDC send/receive functions -------------------------------------*/
+
+static void c67x00_udc_start_io_irq(struct c67x00_udc_ep *ep)
+{
+	struct c67x00_sie *sie = ep->udc->sie;
+	struct c67x00_request *req =
+		list_entry(ep->queue.next, struct c67x00_request, queue);
+
+	if (ep->is_ep_in)
+		c67x00_ll_susb_start_send(sie, ep->ep_num,
+					  req->req.buf, req->req.length);
+	else
+		c67x00_ll_susb_start_receive(sie, ep->ep_num, req->req.length);
+}
+
+static void c67x00_udc_io_work(struct work_struct *_udc)
+{
+	int i = 0;
+	struct c67x00_udc *udc =
+	    container_of(_udc, struct c67x00_udc, io_work);
+
+	for (i = 0; i < C67X00_MAX_NB_END_POINTS; i++) {
+		struct c67x00_udc_ep *ep = &udc->ep[i];
+		if (ep->start_io) {
+			ep->start_io = 0;
+			c67x00_udc_start_io_irq(ep);
+		}
+	}
+}
+
+static void c67x00_udc_schedule_io_irq(struct c67x00_udc_ep *ep)
+{
+	ep->start_io = 1;
+
+	/* start work queue */
+	schedule_work(&ep->udc->io_work);
+}
+
+static void c67x00_udc_done_irq(struct c67x00_udc_ep *ep, int status)
+{
+	struct c67x00_request *req;
+	struct c67x00_sie *sie = ep->udc->sie;
+	int result;
+
+	result = c67x00_ll_susb_get_transfer_status(sie, ep->ep_num);
+	if (result < 0) {
+		dev_err(sie_dev(sie), "udc_done_irq error (%d)\n", result);
+		return;
+	}
+
+	if (unlikely(list_empty(&ep->queue)))
+		return;
+
+	req = list_entry(ep->queue.next, struct c67x00_request, queue);
+
+	req->req.actual = req->req.length - result;
+
+	if (!ep->is_ep_in && ep->ep_num != 0)
+		c67x00_ll_susb_receive(sie, ep->ep_num,
+				       req->req.buf, req->req.actual);
+
+	c67x00_udc_done(ep, req, 0);
+	if (!list_empty(&ep->queue) && !ep->stopped)
+		/* restart io req */
+		c67x00_udc_schedule_io_irq(ep);
+}
+
+/* -------------------------------------------------------------------------- */
+/* endpoints */
+
+static const char *c67x00_ep_name[C67X00_MAX_NB_END_POINTS] = {
+	"ep0", "ep1out-bulk", "ep2in-bulk", "ep3", "ep4", "ep5", "ep6", "ep7"
+};
+
+
+/* -------------------------------------------------------------------------- */
+/* ep opts */
+
+/*
+ * empties entire endpoint queue
+ */
+static void c67x00_nuke_ep(struct c67x00_udc_ep *ep, int status)
+{
+	ep->stopped = 1;
+
+	while (!list_empty(&ep->queue)) {
+		struct c67x00_request *req =
+			list_entry(ep->queue.next, struct c67x00_request,
+				   queue);
+		c67x00_udc_done(ep, req, status);
+	}
+}
+
+static int c67x00_ep_enable(struct usb_ep *_ep,
+			    const struct usb_endpoint_descriptor *desc)
+{
+	struct c67x00_udc_ep *ep;
+	struct c67x00_sie *sie;
+	u16 maxpacket;
+
+	ep = container_of(_ep, struct c67x00_udc_ep, ep);
+	sie = ep->udc->sie;
+
+	maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+
+	c67x00_ll_set_device_ep_status(sie, ep->ep_num, 0x0000);
+
+	if (desc->bEndpointAddress & USB_DIR_IN) {
+		ep->is_ep_in = 1;
+		c67x00_ll_set_ep_ctrl_reg(sie, ep->ep_num,
+					  EP_ENABLE | DIR_SEL_IN);
+		c67x00_ll_set_ep_packet_size_reg(sie, ep->ep_num, maxpacket);
+	} else {
+		ep->is_ep_in = 0;
+		c67x00_ll_set_ep_ctrl_reg(sie, ep->ep_num, EP_ENABLE);
+		c67x00_ll_set_ep_packet_size_reg(sie, ep->ep_num, maxpacket);
+	}
+
+	ep->enable = 1;
+	ep->stopped = 0;
+	ep->ep.maxpacket = maxpacket;
+
+	return 0;
+}
+
+static int c67x00_ep_disable(struct usb_ep *_ep)
+{
+	unsigned long flags;
+	struct c67x00_udc_ep *ep;
+
+	ep = container_of(_ep, struct c67x00_udc_ep, ep);
+
+	dev_dbg(sie_dev(ep->udc->sie), "ep_disable %s\n", _ep->name);
+
+	spin_lock_irqsave(&ep->udc->lock, flags);
+
+	ep->enable = 0;
+	ep->stopped = 1;
+
+	c67x00_nuke_ep(ep, -ESHUTDOWN);
+
+	spin_unlock_irqrestore(&ep->udc->lock, flags);
+
+	return 0;
+}
+
+
+struct usb_request *c67x00_ep_alloc_request(struct usb_ep *_ep,
+					    gfp_t gfp_flags)
+{
+	struct c67x00_request *req;
+
+	req = kzalloc(sizeof(struct c67x00_request), gfp_flags);
+	if (!req)
+		return NULL;
+
+	INIT_LIST_HEAD(&req->queue);
+	return &req->req;
+}
+
+static void c67x00_ep_free_request(struct usb_ep *_ep,
+				   struct usb_request *_req)
+{
+	struct c67x00_request *req = NULL;
+	struct c67x00_udc_ep *ep;
+
+	ep = container_of(_ep, struct c67x00_udc_ep, ep);
+	dev_dbg(sie_dev(ep->udc->sie), "free_request %s\n", _ep->name);
+
+	req = container_of(_req, struct c67x00_request, req);
+
+	if (_req)
+		kfree(req);
+}
+
+static int c67x00_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
+			   gfp_t gfp_flags)
+{
+	struct c67x00_udc_ep *ep;
+	struct c67x00_request *req;
+	unsigned long flags;
+	int request = 0;
+	struct c67x00_udc *dev;
+
+	req = container_of(_req, struct c67x00_request, req);
+	if (unlikely
+	    (!_req || !_req->complete || !_req->buf
+	     || !list_empty(&req->queue))) {
+		printk(KERN_WARNING "bad params\n");
+		return -EINVAL;
+	}
+
+	ep = container_of(_ep, struct c67x00_udc_ep, ep);
+	if (unlikely(!_ep)) {
+		dev_warn(sie_dev(ep->udc->sie), "bad ep\n");
+		return -EINVAL;
+	}
+
+	dev = ep->udc;
+	if (unlikely
+	    (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) {
+		dev_warn(sie_dev(ep->udc->sie), "bogus device state\n");
+		return -ESHUTDOWN;
+	}
+
+	if (ep->ep_num == 0) {
+		/* The gadget driver returns the descriptors through this way */
+		if (!c67x00_udc_parse_descriptor(dev, req)) {
+			req->req.actual = req->req.length;
+			return -EINVAL;
+		} else {
+			req->req.status = 0;
+			req->req.actual = req->req.length;
+			req->req.complete(&ep->ep, &req->req);
+			return 0;
+		}
+
+	}
+
+	spin_lock_irqsave(&dev->lock, flags);
+
+	_req->status = -EINPROGRESS;
+	_req->actual = 0;
+
+	/* Start I/O queue if the list was empty */
+	if (list_empty(&ep->queue) && !ep->stopped)
+		request = 1;
+
+	/* Add the request to the queue of the endpoint */
+	list_add_tail(&req->queue, &ep->queue);
+
+	if (request)
+		c67x00_udc_schedule_io_irq(ep);
+
+	spin_unlock_irqrestore(&dev->lock, flags);
+
+	return 0;
+}
+
+
+static int c67x00_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+	struct c67x00_udc_ep *ep;
+	struct c67x00_request *req;
+	unsigned long flags;
+
+	ep = container_of(_ep, struct c67x00_udc_ep, ep);
+	if (!_ep || ep->ep_num == 0)
+		return -EINVAL;
+
+	dev_dbg(sie_dev(ep->udc->sie), "dequeue %s\n", _ep->name);
+
+	spin_lock_irqsave(&ep->udc->lock, flags);
+
+	/* make sure it's actually queued on this endpoint */
+	list_for_each_entry(req, &ep->queue, queue) {
+		if (&req->req == _req)
+			break;
+	}
+	if (&req->req != _req) {
+		spin_unlock_irqrestore(&ep->udc->lock, flags);
+		return -EINVAL;
+	}
+
+	c67x00_udc_done(ep, req, -ECONNRESET);
+
+	spin_unlock_irqrestore(&ep->udc->lock, flags);
+	return 0;
+}
+
+
+
+static int c67x00_ep_set_halt(struct usb_ep *_ep, int value)
+{
+	printk(KERN_WARNING "c67x00-udc : ep set_halt %s\n", _ep->name);
+	return -ENODEV;
+}
+
+static void c67x00_ep_fifo_flush(struct usb_ep *_ep)
+{
+	printk(KERN_WARNING "c67x00-udc : ep fifo_flush %s\n", _ep->name);
+}
+
+
+static const struct usb_ep_ops c67x00_ep_ops = {
+	.enable = c67x00_ep_enable,
+	.disable = c67x00_ep_disable,
+
+	.alloc_request = c67x00_ep_alloc_request,
+	.free_request = c67x00_ep_free_request,
+
+	.queue = c67x00_ep_queue,
+	.dequeue = c67x00_ep_dequeue,
+
+	.set_halt = c67x00_ep_set_halt,
+	.fifo_flush = c67x00_ep_fifo_flush,
+};
+
+/* -------------------------------------------------------------------------- */
+
+void c67x00_udc_msg_received(struct c67x00_sie *sie, u16 msg)
+{
+	struct c67x00_udc *udc = sie->private_data;
+	u16 EPx_msg_mask = /*SUSB_EP0_MSG | */ SUSB_EP1_MSG
+		| SUSB_EP2_MSG
+		| SUSB_EP3_MSG
+		| SUSB_EP4_MSG
+		| SUSB_EP5_MSG
+		| SUSB_EP6_MSG
+		| SUSB_EP7_MSG;
+
+	if ((msg & EPx_msg_mask) != 0) {
+		int i, mask = 0x01;
+
+		for (i = 0; i < C67X00_MAX_NB_END_POINTS; i++, mask <<= 1)
+			if (msg & mask)
+				c67x00_udc_done_irq(&udc->ep[i], 0);
+	}
+
+	if (msg & SUSB_RST_MSG) {
+		int i;
+		dev_dbg(sie_dev(sie),
+			 "udc_msg_rec (0x%04X) : SUSB_RST_MSG\n", msg);
+
+		for (i = 0; i < C67X00_MAX_NB_END_POINTS; i++) {
+			struct c67x00_udc_ep *ep = &udc->ep[i];
+			if (i != 0 && ep->enable) {
+				ep->stopped = 1;
+				c67x00_nuke_ep(ep, -ESHUTDOWN);
+			}
+		}
+		if (udc->driver && udc->driver->disconnect)
+			udc->driver->disconnect(&udc->gadget);
+	}
+
+	if (msg & SUSB_SOF_MSG) {
+		dev_dbg(sie_dev(sie),
+			 "udc_msg_rec (0x%04X) : SUSB_SOF_MSG\n", msg);
+	}
+
+	if (msg & SUSB_CFG_MSG) {
+		dev_dbg(sie_dev(sie),
+			 "udc_msg_rec (0x%04X) : SUSB_CFG_MSG\n", msg);
+		/* the c67x00 BIOS only supports 1 configuration,
+		   so it must be configuration 1 */
+		c67x00_udc_set_configuration(sie, udc->config_nr);
+	}
+
+	if (msg & SUSB_SUS_MSG) {
+		dev_dbg(sie_dev(sie),
+			 "udc_msg_rec (0x%04X) : SUSB_SUS_MSG\n", msg);
+	}
+
+	if (msg & SUSB_ID_MSG) {
+		dev_dbg(sie_dev(sie),
+			 "udc_msg_rec (0x%04X) : SUSB_ID_MSG\n", msg);
+	}
+
+	if (msg & SUSB_VBUS_MSG) {
+		dev_dbg(sie_dev(sie),
+			 "udc_msg_rec (0x%04X) : SUSB_VBUS_MSG\n", msg);
+	}
+}
+
+
+/*
+ * This function is called from the interrupt handler in c67x00-drv.c
+ */
+static void c67x00_udc_irq(struct c67x00_sie *sie, u16 int_status, u16 msg)
+{
+	u16 device_status;
+
+	if (msg)
+		c67x00_udc_msg_received(sie, msg);
+
+	device_status = c67x00_ll_usb_get_status(sie);
+
+	if (int_status & SOFEOP_FLG(sie->sie_num))
+		c67x00_ll_usb_clear_status(sie, SOF_EOP_IRQ_FLG);
+
+	if (int_status & RESET_FLG(sie->sie_num)) {
+		dev_info(sie_dev(sie), "sie%d : reset IRQ\n",
+			 sie->sie_num);
+
+		/* Handle reset here */
+		c67x00_ll_usb_clear_status(sie, RESET_IRQ_FLG);
+	}
+
+	if (int_status & DONE_FLG(sie->sie_num))
+		dev_info(sie_dev(sie), "sie%d : done IRQ -> "
+			 "device status 0x%04X\n",
+			 sie->sie_num, device_status);
+}
+
+
+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+{
+	struct c67x00_udc *udc = &controller;
+	int i, retval;
+
+	if (!driver
+/*		|| driver->speed < USB_SPEED_FULL*/
+	    || !driver->bind || !driver->setup) {
+
+		printk(KERN_ERR
+		       "c67x00 : invalid gadget driver provided\n");
+		return -EINVAL;
+	}
+
+
+	spin_lock(&udc->lock);
+	if (!udc->sie || udc->driver) {
+		spin_unlock(&udc->lock);
+		return -EBUSY;
+	}
+
+	udc->driver = driver;
+	udc->gadget.dev.driver = &driver->driver;
+	udc->config_nr = 1;
+	udc->top_str_id = 0;
+	device_add(&udc->gadget.dev);
+
+	driver->driver.bus = NULL;
+
+	dev_dbg(sie_dev(udc->sie), "Binding %s to SIE%d\n",
+		 driver->function, udc->sie->sie_num);
+
+	retval = driver->bind(&udc->gadget);
+	if (retval) {
+		dev_warn(sie_dev(udc->sie), "Driver bind failed\n");
+		goto error;
+	}
+
+	/* retrieve descriptors from gadget and program them in device */
+	udc->driver->setup(&udc->gadget,
+			   (struct usb_ctrlrequest *)
+			   get_descriptor_device);
+	udc->driver->setup(&udc->gadget,
+			   (struct usb_ctrlrequest *)
+			   get_descriptor_config);
+
+	for (i = 0; i <= udc->top_str_id; i++) {
+		get_descriptor_string[2] = i;
+		udc->driver->setup(&udc->gadget,
+				   (struct usb_ctrlrequest *)
+				   get_descriptor_string);
+	}
+
+	spin_unlock(&udc->lock);
+
+	/* enable device */
+	c67x00_ll_susb_init(udc->sie);
+
+	return 0;
+
+error :
+	udc->driver = NULL;
+	udc->gadget.dev.driver = NULL;
+	device_del(&udc->gadget.dev);
+
+	spin_unlock(&udc->lock);
+
+	return retval;
+}
+EXPORT_SYMBOL(usb_gadget_register_driver);
+
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+	struct c67x00_udc *udc = &controller;
+
+	printk(KERN_WARNING "c67x00-udc : usb_gadget_unregister_driver\n");
+
+	spin_lock(&udc->lock);
+	if (udc->driver != driver) {
+		spin_unlock(&udc->lock);
+		return -EINVAL;
+	}
+
+	udc->driver = NULL;
+
+	driver->unbind(&udc->gadget);
+	device_del(&udc->gadget.dev);
+
+	c67x00_ll_susb_disable(udc->sie);
+
+	spin_unlock(&udc->lock);
+	return 0;
+}
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+/* -------------------------------------------------------------------------- */
+
+int c67x00_udc_probe(struct c67x00_sie *sie)
+{
+	struct c67x00_udc *udc = &controller;
+	unsigned long flags;
+	int i;
+
+	if (udc->sie) {
+		dev_err(sie_dev(sie),
+			"Only 1 peripheral port supported, check sie_config\n");
+		return -EBUSY;
+	}
+
+	spin_lock_init(&udc->lock);
+	INIT_WORK(&udc->io_work, c67x00_udc_io_work);
+	INIT_LIST_HEAD(&udc->gadget.ep_list);
+
+	udc->gadget.ep0 = &udc->ep[0].ep;
+	INIT_LIST_HEAD(&udc->gadget.ep0->ep_list);
+	for (i = 0; i < C67X00_MAX_NB_END_POINTS; i++) {
+		struct c67x00_udc_ep *ep = &udc->ep[i];
+		if (i != 0) {
+			INIT_LIST_HEAD(&udc->ep[i].ep.ep_list);
+			list_add_tail(&udc->ep[i].ep.ep_list,
+				      &udc->gadget.ep_list);
+		}
+		ep->ep.name = c67x00_ep_name[i];
+		ep->ep.ops = &c67x00_ep_ops;
+		ep->enable = 0;
+		ep->start_io = 0;
+		if (i == 0)
+			ep->ep.maxpacket = 8;
+		else
+			/* Size is set when endpoint is enabled */
+			ep->ep.maxpacket = 512;
+		ep->ep_num = i;
+		ep->udc = udc;
+		INIT_LIST_HEAD(&ep->queue);
+	}
+
+	udc->sie = sie;
+	udc->gadget.dev.parent = &sie->dev->pdev->dev;
+	device_initialize(&udc->gadget.dev);
+
+	spin_lock_irqsave(&sie->lock, flags);
+	sie->private_data = udc;
+	sie->irq = c67x00_udc_irq;
+	spin_unlock_irqrestore(&sie->lock, flags);
+
+	return 0;
+}
+
+void c67x00_udc_remove(struct c67x00_sie *sie)
+{
+	struct c67x00_udc *udc = sie->private_data;
+
+	if (!udc) {
+		dev_err(sie_dev(sie), "No udc found!\n");
+		return;
+	}
+
+	/* gadget driver must not be registered */
+	BUG_ON(udc->driver != NULL);
+
+	spin_lock(&udc->lock);
+	sie->private_data = NULL;
+	udc->sie = NULL;
+	spin_unlock(&udc->lock);
+}

48 lines not on this page · raw message

Index: linux-2.6/drivers/usb/c67x00/c67x00-drv.c
===================================================================
@@ -42,6 +42,7 @@
 
 #include "c67x00.h"
 #include "c67x00-hcd.h"
+#include "c67x00-udc.h"
 
 static void c67x00_probe_sie(struct c67x00_sie *sie,
 			     struct c67x00_device *dev, int sie_num)

@@ -56,6 +57,11 @@
 		c67x00_hcd_probe(sie);
 		break;
 
+	case C67X00_SIE_PERIPHERAL_A:
+	case C67X00_SIE_PERIPHERAL_B:
+		c67x00_udc_probe(sie);
+		break;
+
 	case C67X00_SIE_UNUSED:
 		dev_info(sie_dev(sie),
 			 "Not using SIE %d as requested\n", sie->sie_num);

@@ -76,6 +82,11 @@
 		c67x00_hcd_remove(sie);
 		break;
 
+	case C67X00_SIE_PERIPHERAL_A:
+	case C67X00_SIE_PERIPHERAL_B:
+		c67x00_udc_remove(sie);
+		break;
+
 	default:
 		break;
 	}

218 lines not on this page · raw message

Index: linux-2.6/drivers/usb/c67x00/c67x00.h
===================================================================
@@ -283,6 +283,27 @@
 void c67x00_ll_husb_init_host_port(struct c67x00_sie *sie);
 void c67x00_ll_husb_reset_port(struct c67x00_sie *sie, int port);
 
+/* Slave specific functions */
+void c67x00_ll_susb_init(struct c67x00_sie *sie);
+void c67x00_ll_susb_disable(struct c67x00_sie *sie);
+void c67x00_ll_set_ep_ctrl_reg(struct c67x00_sie *sie, int ep_num, u16 val);
+void c67x00_ll_set_ep_packet_size_reg(struct c67x00_sie *sie, int ep_num,
+				      u16 val);
+u16 c67x00_ll_get_device_ep_status(struct c67x00_sie *sie, int ep);
+void c67x00_ll_set_device_ep_status(struct c67x00_sie *sie, int ep, u16 value);
+void c67x00_ll_set_device_descriptor_location(struct c67x00_sie *sie,
+					      u16 address);
+void c67x00_ll_set_configuration_descriptor_location(struct c67x00_sie *sie,
+						     u16 address);
+void c67x00_ll_set_string_descriptor_location(struct c67x00_sie *sie,
+					      u16 address);
+int c67x00_ll_susb_start_send(struct c67x00_sie *sie, int ep,
+			      void *data, int len);
+int c67x00_ll_susb_start_receive(struct c67x00_sie *sie, int ep, int len);
+int c67x00_ll_susb_get_transfer_status(struct c67x00_sie *sie, int ep);
+void c67x00_ll_susb_receive(struct c67x00_sie *sie, int ep,
+			    void *data, int len);
+
 /* Called by c67x00_irq to handle lcp interrupts */
 void c67x00_ll_irq(struct c67x00_device *dev, u16 int_status);
 

Index: linux-2.6/drivers/usb/gadget/gadget_chips.h
===================================================================
@@ -147,6 +147,12 @@
 #define	gadget_is_m66592(g)	0
 #endif
 
+#ifdef CONFIG_USB_GADGET_C67X00
+#define	gadget_is_c67x00(g)	!strcmp("c67x00_udc", (g)->name)
+#else
+#define	gadget_is_c67x00(g)	0
+#endif
+
 
 // CONFIG_USB_GADGET_SX2
 // CONFIG_USB_GADGET_AU1X00

@@ -212,5 +218,7 @@
 		return 0x20;
 	else if (gadget_is_m66592(gadget))
 		return 0x21;
+	else if (gadget_is_c67x00(gadget))
+		return 0x22;
 	return -ENOENT;
 }

Index: linux-2.6/drivers/usb/c67x00/c67x00-hcd.h
===================================================================
@@ -112,8 +112,21 @@
  * Functions used by c67x00-drv
  */
 
+#ifdef CONFIG_USB_C67X00_HCD
 int c67x00_hcd_probe(struct c67x00_sie *sie);
 void c67x00_hcd_remove(struct c67x00_sie *sie);
+#else
+static inline int c67x00_hcd_probe(struct c67x00_sie *sie)
+{
+	printk(KERN_ERR "hcd requested but CONFIG_USB_C67X00_HCD "
+	       "not enabled!\n");
+	return -ENODEV;
+}
+
+static inline void c67x00_hcd_remove(struct c67x00_sie *sie)
+{
+}
+#endif				/* CONFIG_USB_C67X00_HCD */
 
 /* ---------------------------------------------------------------------
  * Transfer Descriptor scheduling functions