--- /dev/null
+/*
+ * Copyright 2011, Marvell Semiconductor Inc.
+ * Lei Wen <leiwen@marvell.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Back ported to the 8xx platform (from the 8260 platform) by
+ * Murray.Jensen@cmst.csiro.au, 27-Jan-01.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <config.h>
+#include <net.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <linux/types.h>
+#include <usb/mv_udc.h>
+
+#ifndef DEBUG
+#define DBG(x...) do {} while (0)
+#else
+#define DBG(x...) printf(x)
+static const char *reqname(unsigned r)
+{
+ switch (r) {
+ case USB_REQ_GET_STATUS: return "GET_STATUS";
+ case USB_REQ_CLEAR_FEATURE: return "CLEAR_FEATURE";
+ case USB_REQ_SET_FEATURE: return "SET_FEATURE";
+ case USB_REQ_SET_ADDRESS: return "SET_ADDRESS";
+ case USB_REQ_GET_DESCRIPTOR: return "GET_DESCRIPTOR";
+ case USB_REQ_SET_DESCRIPTOR: return "SET_DESCRIPTOR";
+ case USB_REQ_GET_CONFIGURATION: return "GET_CONFIGURATION";
+ case USB_REQ_SET_CONFIGURATION: return "SET_CONFIGURATION";
+ case USB_REQ_GET_INTERFACE: return "GET_INTERFACE";
+ case USB_REQ_SET_INTERFACE: return "SET_INTERFACE";
+ default: return "*UNKNOWN*";
+ }
+}
+#endif
+
+#define PAGE_SIZE 4096
+#define QH_MAXNUM 32
+static struct usb_endpoint_descriptor ep0_out_desc = {
+ .bLength = sizeof(struct usb_endpoint_descriptor),
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 0,
+ .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
+};
+
+static struct usb_endpoint_descriptor ep0_in_desc = {
+ .bLength = sizeof(struct usb_endpoint_descriptor),
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
+};
+
+struct ept_queue_head *epts;
+struct ept_queue_item *items[2 * NUM_ENDPOINTS];
+static int mv_pullup(struct usb_gadget *gadget, int is_on);
+static int mv_ep_enable(struct usb_ep *ep,
+ const struct usb_endpoint_descriptor *desc);
+static int mv_ep_disable(struct usb_ep *ep);
+static int mv_ep_queue(struct usb_ep *ep,
+ struct usb_request *req, gfp_t gfp_flags);
+static struct usb_request *
+mv_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags);
+static void mv_ep_free_request(struct usb_ep *ep, struct usb_request *_req);
+
+static struct usb_gadget_ops mv_udc_ops = {
+ .pullup = mv_pullup,
+};
+
+static struct usb_ep_ops mv_ep_ops = {
+ .enable = mv_ep_enable,
+ .disable = mv_ep_disable,
+ .queue = mv_ep_queue,
+ .alloc_request = mv_ep_alloc_request,
+ .free_request = mv_ep_free_request,
+};
+
+static struct mv_ep ep[2 * NUM_ENDPOINTS];
+static struct mv_drv controller = {
+ .gadget = {
+ .ep0 = &ep[0].ep,
+ .name = "mv_udc",
+ },
+};
+
+static struct usb_request *
+mv_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
+{
+ struct mv_ep *mv_ep = container_of(ep, struct mv_ep, ep);
+ return &mv_ep->req;
+}
+
+static void mv_ep_free_request(struct usb_ep *ep, struct usb_request *_req)
+{
+ return;
+}
+
+static void ep_enable(int num, int in)
+{
+ struct ept_queue_head *head;
+ struct mv_udc *udc = controller.udc;
+ unsigned n;
+ head = epts + 2*num + in;
+
+ n = readl(&udc->epctrl[num]);
+ if (in)
+ n |= (CTRL_TXE | CTRL_TXR | CTRL_TXT_BULK);
+ else
+ n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK);
+
+ if (num != 0)
+ head->config = CONFIG_MAX_PKT(EP_MAX_PACKET_SIZE) | CONFIG_ZLT;
+ writel(n, &udc->epctrl[num]);
+}
+
+static int mv_ep_enable(struct usb_ep *ep,
+ const struct usb_endpoint_descriptor *desc)
+{
+ struct mv_ep *mv_ep = container_of(ep, struct mv_ep, ep);
+ int num, in;
+ num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ in = (desc->bEndpointAddress & USB_DIR_IN) != 0;
+ ep_enable(num, in);
+ mv_ep->desc = desc;
+ return 0;
+}
+
+static int mv_ep_disable(struct usb_ep *ep)
+{
+ return 0;
+}
+
+static int mv_ep_queue(struct usb_ep *ep,
+ struct usb_request *req, gfp_t gfp_flags)
+{
+ struct mv_ep *mv_ep = container_of(ep, struct mv_ep, ep);
+ struct mv_udc *udc = controller.udc;
+ struct ept_queue_item *item;
+ struct ept_queue_head *head;
+ unsigned phys;
+ int bit, num, len, in;
+ num = mv_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ in = (mv_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
+ item = items[2 * num + in];
+ head = epts + 2 * num + in;
+ phys = (unsigned)req->buf;
+ len = req->length;
+
+ item->next = TERMINATE;
+ item->info = INFO_BYTES(len) | INFO_IOC | INFO_ACTIVE;
+ item->page0 = phys;
+ item->page1 = (phys & 0xfffff000) + 0x1000;
+
+ head->next = (unsigned) item;
+ head->info = 0;
+
+ DBG("ept%d %s queue len %x, buffer %x\n",
+ num, in ? "in" : "out", len, phys);
+
+ if (in)
+ bit = EPT_TX(num);
+ else
+ bit = EPT_RX(num);
+
+ flush_cache(phys, len);
+ flush_cache((unsigned long)item, sizeof(struct ept_queue_item));
+ writel(bit, &udc->epprime);
+
+ return 0;
+}
+
+static void handle_ep_complete(struct mv_ep *ep)
+{
+ struct ept_queue_item *item;
+ int num, in, len;
+ num = ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ in = (ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
+ if (num == 0)
+ ep->desc = &ep0_out_desc;
+ item = items[2 * num + in];
+
+ if (item->info & 0xff)
+ printf("EP%d/%s FAIL nfo=%x pg0=%x\n",
+ num, in ? "in" : "out", item->info, item->page0);
+
+ len = (item->info >> 16) & 0x7fff;
+ ep->req.length -= len;
+ DBG("ept%d %s complete %x\n",
+ num, in ? "in" : "out", len);
+ ep->req.complete(&ep->ep, &ep->req);
+ if (num == 0) {
+ ep->req.length = 0;
+ usb_ep_queue(&ep->ep, &ep->req, 0);
+ ep->desc = &ep0_in_desc;
+ }
+}
+
+#define SETUP(type, request) (((type) << 8) | (request))
+
+static void handle_setup(void)
+{
+ struct usb_request *req = &ep[0].req;
+ struct mv_udc *udc = controller.udc;
+ struct ept_queue_head *head;
+ struct usb_ctrlrequest r;
+ int status = 0;
+ int num, in, _num, _in, i;
+ char *buf;
+ head = epts;
+
+ flush_cache((unsigned long)head, sizeof(struct ept_queue_head));
+ memcpy(&r, head->setup_data, sizeof(struct usb_ctrlrequest));
+ writel(EPT_RX(0), &udc->epstat);
+ DBG("handle setup %s, %x, %x index %x value %x\n", reqname(r.bRequest),
+ r.bRequestType, r.bRequest, r.wIndex, r.wValue);
+
+ switch (SETUP(r.bRequestType, r.bRequest)) {
+ case SETUP(USB_RECIP_ENDPOINT, USB_REQ_CLEAR_FEATURE):
+ _num = r.wIndex & 15;
+ _in = !!(r.wIndex & 0x80);
+
+ if ((r.wValue == 0) && (r.wLength == 0)) {
+ req->length = 0;
+ for (i = 0; i < NUM_ENDPOINTS; i++) {
+ if (!ep[i].desc)
+ continue;
+ num = ep[i].desc->bEndpointAddress
+ & USB_ENDPOINT_NUMBER_MASK;
+ in = (ep[i].desc->bEndpointAddress
+ & USB_DIR_IN) != 0;
+ if ((num == _num) && (in == _in)) {
+ ep_enable(num, in);
+ usb_ep_queue(controller.gadget.ep0,
+ req, 0);
+ break;
+ }
+ }
+ }
+ return;
+
+ case SETUP(USB_RECIP_DEVICE, USB_REQ_SET_ADDRESS):
+ /*
+ * write address delayed (will take effect
+ * after the next IN txn)
+ */
+ writel((r.wValue << 25) | (1 << 24), &udc->devaddr);
+ req->length = 0;
+ usb_ep_queue(controller.gadget.ep0, req, 0);
+ return;
+
+ case SETUP(USB_DIR_IN | USB_RECIP_DEVICE, USB_REQ_GET_STATUS):
+ req->length = 2;
+ buf = (char *)req->buf;
+ buf[0] = 1 << USB_DEVICE_SELF_POWERED;
+ buf[1] = 0;
+ usb_ep_queue(controller.gadget.ep0, req, 0);
+ return;
+ }
+ /* pass request up to the gadget driver */
+ if (controller.driver)
+ status = controller.driver->setup(&controller.gadget, &r);
+ else
+ status = -ENODEV;
+
+ if (!status)
+ return;
+ DBG("STALL reqname %s type %x value %x, index %x\n",
+ reqname(r.bRequest), r.bRequestType, r.wValue, r.wIndex);
+ writel((1<<16) | (1 << 0), &udc->epctrl[0]);
+}
+
+static void stop_activity(void)
+{
+ int i, num, in;
+ struct ept_queue_head *head;
+ struct mv_udc *udc = controller.udc;
+ writel(readl(&udc->epcomp), &udc->epcomp);
+ writel(readl(&udc->epstat), &udc->epstat);
+ writel(0xffffffff, &udc->epflush);
+
+ /* error out any pending reqs */
+ for (i = 0; i < NUM_ENDPOINTS; i++) {
+ if (i != 0)
+ writel(0, &udc->epctrl[i]);
+ if (ep[i].desc) {
+ num = ep[i].desc->bEndpointAddress
+ & USB_ENDPOINT_NUMBER_MASK;
+ in = (ep[i].desc->bEndpointAddress & USB_DIR_IN) != 0;
+ head = epts + (num * 2) + (in);
+ head->info = INFO_ACTIVE;
+ }
+ }
+}
+
+void udc_irq(void)
+{
+ struct mv_udc *udc = controller.udc;
+ unsigned n = readl(&udc->usbsts);
+ writel(n, &udc->usbsts);
+ int bit, i, num, in;
+
+ n &= (STS_SLI | STS_URI | STS_PCI | STS_UI | STS_UEI);
+ if (n == 0)
+ return;
+
+ if (n & STS_URI) {
+ DBG("-- reset --\n");
+ stop_activity();
+ }
+ if (n & STS_SLI)
+ DBG("-- suspend --\n");
+
+ if (n & STS_PCI) {
+ DBG("-- portchange --\n");
+ bit = (readl(&udc->portsc) >> 26) & 3;
+ if (bit == 2) {
+ controller.gadget.speed = USB_SPEED_HIGH;
+ for (i = 1; i < NUM_ENDPOINTS && n; i++)
+ if (ep[i].desc)
+ ep[i].ep.maxpacket = 512;
+ } else {
+ controller.gadget.speed = USB_SPEED_FULL;
+ }
+ }
+
+ if (n & STS_UEI)
+ printf("<UEI %x>\n", readl(&udc->epcomp));
+
+ if ((n & STS_UI) || (n & STS_UEI)) {
+ n = readl(&udc->epstat);
+ if (n & EPT_RX(0))
+ handle_setup();
+
+ n = readl(&udc->epcomp);
+ if (n != 0)
+ writel(n, &udc->epcomp);
+
+ for (i = 0; i < NUM_ENDPOINTS && n; i++) {
+ if (ep[i].desc) {
+ num = ep[i].desc->bEndpointAddress
+ & USB_ENDPOINT_NUMBER_MASK;
+ in = (ep[i].desc->bEndpointAddress
+ & USB_DIR_IN) != 0;
+ bit = (in) ? EPT_TX(num) : EPT_RX(num);
+ if (n & bit)
+ handle_ep_complete(&ep[i]);
+ }
+ }
+ }
+}
+
+int usb_gadget_handle_interrupts(void)
+{
+ u32 value;
+ struct mv_udc *udc = controller.udc;
+
+ value = readl(&udc->usbsts);
+ if (value)
+ udc_irq();
+
+ return value;
+}
+
+static int mv_pullup(struct usb_gadget *gadget, int is_on)
+{
+ struct mv_udc *udc = controller.udc;
+ if (is_on) {
+ /* RESET */
+ writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RST, &udc->usbcmd);
+ udelay(200);
+
+ writel((unsigned) epts, &udc->epinitaddr);
+
+ /* select DEVICE mode */
+ writel(USBMODE_DEVICE, &udc->usbmode);
+
+ writel(0xffffffff, &udc->epflush);
+
+ /* Turn on the USB connection by enabling the pullup resistor */
+ writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RUN, &udc->usbcmd);
+ } else {
+ stop_activity();
+ writel(USBCMD_FS2, &udc->usbcmd);
+ udelay(800);
+ if (controller.driver)
+ controller.driver->disconnect(gadget);
+ }
+
+ return 0;
+}
+
+void udc_disconnect(void)
+{
+ struct mv_udc *udc = controller.udc;
+ /* disable pullup */
+ stop_activity();
+ writel(USBCMD_FS2, &udc->usbcmd);
+ udelay(800);
+ if (controller.driver)
+ controller.driver->disconnect(&controller.gadget);
+}
+
+static int mvudc_probe(void)
+{
+ struct ept_queue_head *head;
+ int i;
+
+ controller.gadget.ops = &mv_udc_ops;
+ controller.udc = (struct mv_udc *)CONFIG_USB_REG_BASE;
+ epts = memalign(PAGE_SIZE, QH_MAXNUM * sizeof(struct ept_queue_head));
+ memset(epts, 0, QH_MAXNUM * sizeof(struct ept_queue_head));
+ for (i = 0; i < 2 * NUM_ENDPOINTS; i++) {
+ /*
+ * For item0 and item1, they are served as ep0
+ * out&in seperately
+ */
+ head = epts + i;
+ if (i < 2)
+ head->config = CONFIG_MAX_PKT(EP0_MAX_PACKET_SIZE)
+ | CONFIG_ZLT | CONFIG_IOS;
+ else
+ head->config = CONFIG_MAX_PKT(EP_MAX_PACKET_SIZE)
+ | CONFIG_ZLT;
+ head->next = TERMINATE;
+ head->info = 0;
+
+ items[i] = memalign(PAGE_SIZE, sizeof(struct ept_queue_item));
+ }
+
+ INIT_LIST_HEAD(&controller.gadget.ep_list);
+ ep[0].ep.maxpacket = 64;
+ ep[0].ep.name = "ep0";
+ ep[0].desc = &ep0_in_desc;
+ INIT_LIST_HEAD(&controller.gadget.ep0->ep_list);
+ for (i = 0; i < 2 * NUM_ENDPOINTS; i++) {
+ if (i != 0) {
+ ep[i].ep.maxpacket = 512;
+ ep[i].ep.name = "ep-";
+ list_add_tail(&ep[i].ep.ep_list,
+ &controller.gadget.ep_list);
+ ep[i].desc = NULL;
+ }
+ ep[i].ep.ops = &mv_ep_ops;
+ }
+ return 0;
+}
+
+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+{
+ struct mv_udc *udc = controller.udc;
+ int retval;
+
+ if (!driver
+ || driver->speed < USB_SPEED_FULL
+ || !driver->bind
+ || !driver->setup) {
+ DBG("bad parameter.\n");
+ return -EINVAL;
+ }
+
+ if (!mvudc_probe()) {
+ usb_lowlevel_init();
+ /* select ULPI phy */
+ writel(PTS(PTS_ENABLE) | PFSC, &udc->portsc);
+ }
+ retval = driver->bind(&controller.gadget);
+ if (retval) {
+ DBG("driver->bind() returned %d\n", retval);
+ return retval;
+ }
+ controller.driver = driver;
+
+ return 0;
+}
+
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright 2011, Marvell Semiconductor Inc.
+ * Lei Wen <leiwen@marvell.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 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+#ifndef __MV_UDC_H__
+#define __MV_UDC_H__
+
+#include <asm/byteorder.h>
+#include <asm/errno.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+/* Endpoint 0 states */
+#define EP0_IDLE 0
+#define EP0_IN_DATA 1
+#define EP0_OUT_DATA 2
+#define EP0_XFER_COMPLETE 3
+
+
+/* Endpoint parameters */
+#define MAX_ENDPOINTS 4
+#define EP_MAX_PACKET_SIZE 0x200
+
+#define EP0_MAX_PACKET_SIZE 64
+#define UDC_OUT_ENDPOINT 0x02
+#define UDC_OUT_PACKET_SIZE EP_MAX_PACKET_SIZE
+#define UDC_IN_ENDPOINT 0x01
+#define UDC_IN_PACKET_SIZE EP_MAX_PACKET_SIZE
+#define UDC_INT_ENDPOINT 0x05
+#define UDC_INT_PACKET_SIZE EP_MAX_PACKET_SIZE
+#define UDC_BULK_PACKET_SIZE EP_MAX_PACKET_SIZE
+
+#define NUM_ENDPOINTS 6
+#define REQ_COUNT 12
+struct mv_ep {
+ struct usb_ep ep;
+ struct usb_request req;
+ struct list_head queue;
+ const struct usb_endpoint_descriptor *desc;
+};
+
+struct mv_udc {
+ u32 pad0[80];
+#define MICRO_8FRAME 0x8
+#define USBCMD_ITC(x) (((x > 0xff) ? 0xff : x) << 16)
+#define USBCMD_FS2 (1 << 15)
+#define USBCMD_RST (1 << 1)
+#define USBCMD_RUN (1)
+ u32 usbcmd; /* 0x140 */
+#define STS_SLI (1 << 8)
+#define STS_URI (1 << 6)
+#define STS_PCI (1 << 2)
+#define STS_UEI (1 << 1)
+#define STS_UI (1 << 0)
+ u32 usbsts; /* 0x144 */
+ u32 pad1[3];
+ u32 devaddr; /* 0x154 */
+ u32 epinitaddr; /* 0x158 */
+ u32 pad2[10];
+#define PTS_ENABLE 2
+#define PTS(x) ((x & 0x3) << 30)
+#define PFSC (1 << 24)
+ u32 portsc; /* 0x184 */
+ u32 pad3[8];
+#define USBMODE_DEVICE 2
+ u32 usbmode; /* 0x1a8 */
+ u32 epstat; /* 0x1ac */
+#define EPT_TX(x) (1 << ((x & 0xffff) + 16))
+#define EPT_RX(x) (1 << (x & 0xffff))
+ u32 epprime; /* 0x1b0 */
+ u32 epflush; /* 0x1b4 */
+ u32 pad4;
+ u32 epcomp; /* 0x1bc */
+#define CTRL_TXE (1 << 23)
+#define CTRL_TXR (1 << 22)
+#define CTRL_RXE (1 << 7)
+#define CTRL_RXR (1 << 6)
+#define CTRL_TXT_BULK (2 << 18)
+#define CTRL_RXT_BULK (2 << 2)
+ u32 epctrl[16]; /* 0x1c0 */
+};
+
+struct mv_drv {
+ struct usb_gadget gadget;
+ struct usb_gadget_driver *driver;
+ struct mv_udc *udc;
+};
+
+struct ept_queue_head {
+ unsigned config;
+ unsigned current; /* read-only */
+
+ unsigned next;
+ unsigned info;
+ unsigned page0;
+ unsigned page1;
+ unsigned page2;
+ unsigned page3;
+ unsigned page4;
+ unsigned reserved_0;
+
+ unsigned char setup_data[8];
+
+ unsigned reserved_1;
+ unsigned reserved_2;
+ unsigned reserved_3;
+ unsigned reserved_4;
+};
+
+#define CONFIG_MAX_PKT(n) ((n) << 16)
+#define CONFIG_ZLT (1 << 29) /* stop on zero-len xfer */
+#define CONFIG_IOS (1 << 15) /* IRQ on setup */
+
+struct ept_queue_item {
+ unsigned next;
+ unsigned info;
+ unsigned page0;
+ unsigned page1;
+ unsigned page2;
+ unsigned page3;
+ unsigned page4;
+ unsigned reserved;
+};
+
+#define TERMINATE 1
+#define INFO_BYTES(n) ((n) << 16)
+#define INFO_IOC (1 << 15)
+#define INFO_ACTIVE (1 << 7)
+#define INFO_HALTED (1 << 6)
+#define INFO_BUFFER_ERROR (1 << 5)
+#define INFO_TX_ERROR (1 << 3)
+
+extern int usb_lowlevel_init(void);
+#endif /* __MV_UDC_H__ */
projects / u-boot / commitdiff