diff options
Diffstat (limited to 'packages/linux/linux-ezx-2.6.21/patches/pxa27x-udc-support.2.patch')
| -rwxr-xr-x | packages/linux/linux-ezx-2.6.21/patches/pxa27x-udc-support.2.patch | 3037 |
1 files changed, 0 insertions, 3037 deletions
diff --git a/packages/linux/linux-ezx-2.6.21/patches/pxa27x-udc-support.2.patch b/packages/linux/linux-ezx-2.6.21/patches/pxa27x-udc-support.2.patch deleted file mode 100755 index d35e40f046..0000000000 --- a/packages/linux/linux-ezx-2.6.21/patches/pxa27x-udc-support.2.patch +++ /dev/null @@ -1,3037 +0,0 @@ -diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig -index 4097a86..5d3ea6e 100644 ---- a/drivers/usb/gadget/Kconfig -+++ b/drivers/usb/gadget/Kconfig -@@ -111,6 +111,24 @@ config USB_PXA2XX - default USB_GADGET - select USB_GADGET_SELECTED - -+config USB_GADGET_PXA27X -+ boolean "PXA 27x" -+ depends on ARCH_PXA && PXA27x -+ help -+ Intel's PXA 27x series XScale processors include an integrated -+ full speed USB 1.1 device controller. -+ -+ Say "y" to link the driver statically, or "m" to build a -+ dynamically linked module called "pxa2xx_udc" and force all -+ gadget drivers to also be dynamically linked. -+ -+ -+config USB_PXA27X -+ tristate -+ depends on USB_GADGET_PXA27X -+ default USB_GADGET -+ select USB_GADGET_SELECTED -+ - # if there's only one gadget driver, using only two bulk endpoints, - # don't waste memory for the other endpoints - config USB_PXA2XX_SMALL -diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile -index e71e086..7e508a6 100644 ---- a/drivers/usb/gadget/Makefile -+++ b/drivers/usb/gadget/Makefile -@@ -4,6 +4,7 @@ - obj-$(CONFIG_USB_DUMMY_HCD) += dummy_hcd.o - obj-$(CONFIG_USB_NET2280) += net2280.o - obj-$(CONFIG_USB_PXA2XX) += pxa2xx_udc.o -+obj-$(CONFIG_USB_PXA27X) += pxa27x_udc.o - obj-$(CONFIG_USB_GOKU) += goku_udc.o - obj-$(CONFIG_USB_OMAP) += omap_udc.o - obj-$(CONFIG_USB_LH7A40X) += lh7a40x_udc.o -diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c -index f28af06..e7d72ff 100644 ---- a/drivers/usb/gadget/epautoconf.c -+++ b/drivers/usb/gadget/epautoconf.c -@@ -230,7 +230,8 @@ find_ep (struct usb_gadget *gadget, const char *name) - */ - struct usb_ep * __devinit usb_ep_autoconfig ( - struct usb_gadget *gadget, -- struct usb_endpoint_descriptor *desc -+ struct usb_endpoint_descriptor *desc, -+ int config, int interface, int alt - ) - { - struct usb_ep *ep; -@@ -238,6 +239,11 @@ struct usb_ep * __devinit usb_ep_autoconfig ( - - type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; - -+ /* If have ep_alloc() function use it! */ -+ if (gadget->ops->ep_alloc) -+ return gadget->ops->ep_alloc(gadget, desc, -+ config, interface, alt); -+ - /* First, apply chip-specific "best usage" knowledge. - * This might make a good usb_gadget_ops hook ... - */ -diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c -index 04e6b85..bc6de31 100644 ---- a/drivers/usb/gadget/ether.c -+++ b/drivers/usb/gadget/ether.c -@@ -258,10 +258,6 @@ MODULE_PARM_DESC(host_addr, "Host Ethernet Address"); - #define DEV_CONFIG_CDC - #endif - --#ifdef CONFIG_USB_GADGET_PXA27X --#define DEV_CONFIG_CDC --#endif -- - #ifdef CONFIG_USB_GADGET_S3C2410 - #define DEV_CONFIG_CDC - #endif -@@ -294,6 +290,10 @@ MODULE_PARM_DESC(host_addr, "Host Ethernet Address"); - #define DEV_CONFIG_SUBSET - #endif - -+#ifdef CONFIG_USB_GADGET_PXA27X -+#define DEV_CONFIG_SUBSET -+#endif -+ - #ifdef CONFIG_USB_GADGET_SA1100 - /* use non-CDC for backwards compatibility */ - #define DEV_CONFIG_SUBSET -@@ -2309,6 +2309,9 @@ eth_bind (struct usb_gadget *gadget) - * non-CDC to be compatible with ARM Linux-2.4 "usb-eth". - */ - cdc = 0; -+ } else if (gadget_is_pxa27x(gadget)) { -+ /* hardware can't write zlps */ -+ zlp = 0; - } - - gcnum = usb_gadget_controller_number (gadget); -@@ -2375,7 +2378,22 @@ eth_bind (struct usb_gadget *gadget) - - /* all we really need is bulk IN/OUT */ - usb_ep_autoconfig_reset (gadget); -- in_ep = usb_ep_autoconfig (gadget, &fs_source_desc); -+#ifdef CONFIG_USB_ETH_RNDIS -+ in_ep = usb_ep_autoconfig (gadget, &fs_source_desc, -+ DEV_RNDIS_CONFIG_VALUE, -+ (int)rndis_data_intf.bInterfaceNumber, -+ (int)rndis_data_intf.bAlternateSetting); -+#elif defined(DEV_CONFIG_CDC) -+ in_ep = usb_ep_autoconfig (gadget, &fs_source_desc, -+ DEV_CONFIG_VALUE, -+ (int)data_intf.bInterfaceNumber, -+ (int)data_intf.bAlternateSetting); -+#elif defined(DEV_CONFIG_SUBSET) -+ in_ep = usb_ep_autoconfig (gadget, &fs_source_desc, -+ DEV_CONFIG_VALUE, -+ (int)subset_data_intf.bInterfaceNumber, -+ (int)subset_data_intf.bAlternateSetting); -+#endif /* CONFIG_USB_ETH_RNDIS */ - if (!in_ep) { - autoconf_fail: - dev_err (&gadget->dev, -@@ -2385,7 +2403,22 @@ autoconf_fail: - } - in_ep->driver_data = in_ep; /* claim */ - -- out_ep = usb_ep_autoconfig (gadget, &fs_sink_desc); -+#ifdef CONFIG_USB_ETH_RNDIS -+ out_ep = usb_ep_autoconfig (gadget, &fs_sink_desc, -+ DEV_RNDIS_CONFIG_VALUE, -+ (int)rndis_data_intf.bInterfaceNumber, -+ (int)rndis_data_intf.bAlternateSetting); -+#elif defined(DEV_CONFIG_CDC) -+ out_ep = usb_ep_autoconfig (gadget, &fs_sink_desc, -+ DEV_CONFIG_VALUE, -+ (int)data_intf.bInterfaceNumber, -+ (int)data_intf.bAlternateSetting); -+#elif defined(DEV_CONFIG_SUBSET) -+ out_ep = usb_ep_autoconfig (gadget, &fs_sink_desc, -+ DEV_CONFIG_VALUE, -+ (int)subset_data_intf.bInterfaceNumber, -+ (int)subset_data_intf.bAlternateSetting); -+#endif /* CONFIG_USB_ETH_RNDIS */ - if (!out_ep) - goto autoconf_fail; - out_ep->driver_data = out_ep; /* claim */ -@@ -2395,7 +2428,17 @@ autoconf_fail: - * Since some hosts expect one, try to allocate one anyway. - */ - if (cdc || rndis) { -- status_ep = usb_ep_autoconfig (gadget, &fs_status_desc); -+#ifdef CONFIG_USB_ETH_RNDIS -+ status_ep = usb_ep_autoconfig (gadget, &fs_status_desc, -+ DEV_RNDIS_CONFIG_VALUE, -+ (int)rndis_control_intf.bInterfaceNumber, -+ (int)rndis_control_intf.bAlternateSetting); -+#elif defined(DEV_CONFIG_CDC) -+ status_ep = usb_ep_autoconfig (gadget, &fs_status_desc, -+ DEV_CONFIG_VALUE, -+ (int)control_intf.bInterfaceNumber, -+ (int)control_intf.bAlternateSetting); -+#endif /* CONFIG_USB_ETH_RNDIS */ - if (status_ep) { - status_ep->driver_data = status_ep; /* claim */ - } else if (rndis) { -@@ -2403,13 +2446,14 @@ autoconf_fail: - "can't run RNDIS on %s\n", - gadget->name); - return -ENODEV; -+ } - #ifdef DEV_CONFIG_CDC - /* pxa25x only does CDC subset; often used with RNDIS */ -- } else if (cdc) { -+ else if (cdc) { - control_intf.bNumEndpoints = 0; - /* FIXME remove endpoint from descriptor list */ --#endif - } -+#endif - } - #endif - -diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c -index c6b6479..6af5fdd 100644 ---- a/drivers/usb/gadget/file_storage.c -+++ b/drivers/usb/gadget/file_storage.c -@@ -3920,20 +3920,20 @@ static int __init fsg_bind(struct usb_gadget *gadget) - - /* Find all the endpoints we will use */ - usb_ep_autoconfig_reset(gadget); -- ep = usb_ep_autoconfig(gadget, &fs_bulk_in_desc); -+ ep = usb_ep_autoconfig(gadget, &fs_bulk_in_desc, 0, 0, 0); - if (!ep) - goto autoconf_fail; - ep->driver_data = fsg; // claim the endpoint - fsg->bulk_in = ep; - -- ep = usb_ep_autoconfig(gadget, &fs_bulk_out_desc); -+ ep = usb_ep_autoconfig(gadget, &fs_bulk_out_desc, 0, 0, 0); - if (!ep) - goto autoconf_fail; - ep->driver_data = fsg; // claim the endpoint - fsg->bulk_out = ep; - - if (transport_is_cbi()) { -- ep = usb_ep_autoconfig(gadget, &fs_intr_in_desc); -+ ep = usb_ep_autoconfig(gadget, &fs_intr_in_desc, 0, 0, 0); - if (!ep) - goto autoconf_fail; - ep->driver_data = fsg; // claim the endpoint -diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h -index 2e3d662..f3b3291 100644 ---- a/drivers/usb/gadget/gadget_chips.h -+++ b/drivers/usb/gadget/gadget_chips.h -@@ -177,5 +177,7 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget) - return 0x17; - else if (gadget_is_husb2dev(gadget)) - return 0x18; -+ else if (gadget_is_pxa27x(gadget)) -+ return 0x19; - return -ENOENT; - } -diff --git a/drivers/usb/gadget/gmidi.c b/drivers/usb/gadget/gmidi.c -index d08a8d0..d51feb2 100644 ---- a/drivers/usb/gadget/gmidi.c -+++ b/drivers/usb/gadget/gmidi.c -@@ -1204,7 +1204,7 @@ static int __devinit gmidi_bind(struct usb_gadget *gadget) - * but there may also be important quirks to address. - */ - usb_ep_autoconfig_reset(gadget); -- in_ep = usb_ep_autoconfig(gadget, &bulk_in_desc); -+ in_ep = usb_ep_autoconfig(gadget, &bulk_in_desc, 0, 0, 0); - if (!in_ep) { - autoconf_fail: - printk(KERN_ERR "%s: can't autoconfigure on %s\n", -@@ -1214,7 +1214,7 @@ autoconf_fail: - EP_IN_NAME = in_ep->name; - in_ep->driver_data = in_ep; /* claim */ - -- out_ep = usb_ep_autoconfig(gadget, &bulk_out_desc); -+ out_ep = usb_ep_autoconfig(gadget, &bulk_out_desc, 0, 0, 0); - if (!out_ep) { - goto autoconf_fail; - } -diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c -new file mode 100644 -index 0000000..d89ecc5 ---- /dev/null -+++ b/drivers/usb/gadget/pxa27x_udc.c -@@ -0,0 +1,2354 @@ -+/* -+ * linux/drivers/usb/gadget/pxa27x_udc.c -+ * Intel PXA2xx and IXP4xx on-chip full speed USB device controllers -+ * -+ * Copyright (C) 2002 Intrinsyc, Inc. (Frank Becker) -+ * Copyright (C) 2003 Robert Schwebel, Pengutronix -+ * Copyright (C) 2003 Benedikt Spranger, Pengutronix -+ * Copyright (C) 2003 David Brownell -+ * Copyright (C) 2003 Joshua Wise -+ * Copyright (C) 2004 Intel Corporation -+ * Copyright (C) 2007 Rodolfo Giometti <giometti@linux.it> -+ * -+ * 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 -+ * -+ */ -+ -+#undef DEBUG -+/* #define VERBOSE DBG_VERBOSE */ -+ -+#include <linux/module.h> -+#include <linux/kernel.h> -+#include <linux/ioport.h> -+#include <linux/types.h> -+#include <linux/version.h> -+#include <linux/errno.h> -+#include <linux/delay.h> -+#include <linux/sched.h> -+#include <linux/slab.h> -+#include <linux/init.h> -+#include <linux/timer.h> -+#include <linux/list.h> -+#include <linux/interrupt.h> -+#include <linux/proc_fs.h> -+#include <linux/mm.h> -+#include <linux/device.h> -+#include <linux/dma-mapping.h> -+#include <linux/platform_device.h> -+ -+#include <asm/byteorder.h> -+#include <asm/dma.h> -+#include <asm/io.h> -+#include <asm/irq.h> -+#include <asm/system.h> -+#include <asm/mach-types.h> -+#include <asm/unaligned.h> -+#include <asm/hardware.h> -+#include <asm/arch/pxa-regs.h> -+ -+#include <linux/usb/ch9.h> -+#include <linux/usb_gadget.h> -+ -+#include <asm/arch/udc.h> -+ -+ -+/* -+ * This driver handles the USB Device Controller (UDC) in Intel's PXA 27x -+ * series processors. -+ * Such controller drivers work with a gadget driver. The gadget driver -+ * returns descriptors, implements configuration and data protocols used -+ * by the host to interact with this device, and allocates endpoints to -+ * the different protocol interfaces. The controller driver virtualizes -+ * usb hardware so that the gadget drivers will be more portable. -+ * -+ * This UDC hardware wants to implement a bit too much USB protocol, so -+ * it constrains the sorts of USB configuration change events that work. -+ * The errata for these chips are misleading; some "fixed" bugs from -+ * pxa250 a0/a1 b0/b1/b2 sure act like they're still there. -+ */ -+ -+#define DRIVER_VERSION "08-Feb-2007" -+#define DRIVER_DESC "PXA 27x USB Device Controller driver" -+ -+ -+static const char driver_name [] = "pxa27x_udc"; -+ -+static const char ep0name [] = "ep0"; -+ -+ -+#undef USE_DMA -+#undef DISABLE_TEST_MODE -+ -+#ifdef CONFIG_PROC_FS -+#define UDC_PROC_FILE -+#endif -+ -+#include "pxa27x_udc.h" -+ -+#ifdef CONFIG_EMBEDDED -+/* few strings, and little code to use them */ -+#undef DEBUG -+#undef UDC_PROC_FILE -+#endif -+ -+#ifdef USE_DMA -+static int use_dma = 1; -+module_param(use_dma, bool, 0); -+MODULE_PARM_DESC (use_dma, "true to use dma"); -+ -+static void dma_nodesc_handler (int dmach, void *_ep); -+static void kick_dma(struct pxa27x_ep *ep, struct pxa27x_request *req); -+ -+#define DMASTR " (dma support)" -+ -+#else /* !USE_DMA */ -+#define DMASTR " (pio only)" -+#endif -+ -+#ifdef CONFIG_USB_PXA27X_SMALL -+#define SIZE_STR " (small)" -+#else -+#define SIZE_STR "" -+#endif -+ -+#ifdef DISABLE_TEST_MODE -+/* (mode == 0) == no undocumented chip tweaks -+ * (mode & 1) == double buffer bulk IN -+ * (mode & 2) == double buffer bulk OUT -+ * ... so mode = 3 (or 7, 15, etc) does it for both -+ */ -+static ushort fifo_mode = 0; -+module_param(fifo_mode, ushort, 0); -+MODULE_PARM_DESC (fifo_mode, "pxa27x udc fifo mode"); -+#endif -+ -+#define UDCISR0_IR0 0x3 -+#define UDCISR_INT_MASK (UDC_INT_FIFOERROR | UDC_INT_PACKETCMP) -+#define UDCICR_INT_MASK UDCISR_INT_MASK -+ -+#define UDCCSR_MASK (UDCCSR_FST | UDCCSR_DME) -+/* --------------------------------------------------------------------------- -+ * endpoint related parts of the api to the usb controller hardware, -+ * used by gadget driver; and the inner talker-to-hardware core. -+ * --------------------------------------------------------------------------- -+ */ -+ -+static void pxa27x_ep_fifo_flush (struct usb_ep *ep); -+static void nuke (struct pxa27x_ep *, int status); -+ -+static void pio_irq_enable(int ep_num) -+{ -+ if (ep_num < 16) -+ UDCICR0 |= 3 << (ep_num * 2); -+ else { -+ ep_num -= 16; -+ UDCICR1 |= 3 << (ep_num * 2); -+ } -+} -+ -+static void pio_irq_disable(int ep_num) -+{ -+ ep_num &= 0xf; -+ if (ep_num < 16) -+ UDCICR0 &= ~(3 << (ep_num * 2)); -+ else { -+ ep_num -= 16; -+ UDCICR1 &= ~(3 << (ep_num * 2)); -+ } -+} -+ -+/* The UDCCR reg contains mask and interrupt status bits, -+ * so using '|=' isn't safe as it may ack an interrupt. -+ */ -+#define UDCCR_MASK_BITS (UDCCR_OEN | UDCCR_UDE) -+ -+static inline void udc_set_mask_UDCCR(int mask) -+{ -+ UDCCR = (UDCCR & UDCCR_MASK_BITS) | (mask & UDCCR_MASK_BITS); -+} -+ -+static inline void udc_clear_mask_UDCCR(int mask) -+{ -+ UDCCR = (UDCCR & UDCCR_MASK_BITS) & ~(mask & UDCCR_MASK_BITS); -+} -+ -+static inline void udc_ack_int_UDCCR(int mask) -+{ -+ /* udccr contains the bits we dont want to change */ -+ __u32 udccr = UDCCR & UDCCR_MASK_BITS; -+ -+ UDCCR = udccr | (mask & ~UDCCR_MASK_BITS); -+} -+ -+/* -+ * endpoint enable/disable -+ * -+ * we need to verify the descriptors used to enable endpoints. since pxa27x -+ * endpoint configurations are fixed, and are pretty much always enabled, -+ * there's not a lot to manage here. -+ * -+ * because pxa27x can't selectively initialize bulk (or interrupt) endpoints, -+ * (resetting endpoint halt and toggle), SET_INTERFACE is unusable except -+ * for a single interface (with only the default altsetting) and for gadget -+ * drivers that don't halt endpoints (not reset by set_interface). that also -+ * means that if you use ISO, you must violate the USB spec rule that all -+ * iso endpoints must be in non-default altsettings. -+ */ -+static int pxa27x_ep_enable (struct usb_ep *_ep, -+ const struct usb_endpoint_descriptor *desc) -+{ -+ struct pxa27x_ep *ep; -+ struct pxa27x_udc *dev; -+ -+ ep = container_of (_ep, struct pxa27x_ep, ep); -+ if (!_ep || !desc || _ep->name == ep0name -+ || desc->bDescriptorType != USB_DT_ENDPOINT -+ || ep->fifo_size < le16_to_cpu(desc->wMaxPacketSize)) { -+ DMSG("%s, bad ep or descriptor\n", __FUNCTION__); -+ return -EINVAL; -+ } -+ -+ /* xfer types must match, except that interrupt ~= bulk */ -+ if( ep->ep_type != USB_ENDPOINT_XFER_BULK -+ && desc->bmAttributes != USB_ENDPOINT_XFER_INT) { -+ DMSG("%s, %s type mismatch\n", __FUNCTION__, _ep->name); -+ return -EINVAL; -+ } -+ -+ /* hardware _could_ do smaller, but driver doesn't */ -+ if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK -+ && le16_to_cpu (desc->wMaxPacketSize) -+ != BULK_FIFO_SIZE) -+ || !desc->wMaxPacketSize) { -+ DMSG("%s, bad %s maxpacket\n", __FUNCTION__, _ep->name); -+ return -ERANGE; -+ } -+ -+ dev = ep->dev; -+ if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) { -+ DMSG("%s, bogus device state\n", __FUNCTION__); -+ return -ESHUTDOWN; -+ } -+ -+ ep->desc = desc; -+ ep->dma = -1; -+ ep->stopped = 0; -+ ep->pio_irqs = ep->dma_irqs = 0; -+ ep->ep.maxpacket = le16_to_cpu (desc->wMaxPacketSize); -+ -+ /* flush fifo (mostly for OUT buffers) */ -+ pxa27x_ep_fifo_flush (_ep); -+ -+ /* ... reset halt state too, if we could ... */ -+ -+#ifdef USE_DMA -+ /* for (some) bulk and ISO endpoints, try to get a DMA channel and -+ * bind it to the endpoint. otherwise use PIO. -+ */ -+ DMSG("%s: called attributes=%d\n", __FUNCTION__, ep->ep_type); -+ switch (ep->ep_type) { -+ case USB_ENDPOINT_XFER_ISOC: -+ if (le16_to_cpu(desc->wMaxPacketSize) % 32) -+ break; -+ // fall through -+ case USB_ENDPOINT_XFER_BULK: -+ if (!use_dma || !ep->reg_drcmr) -+ break; -+ ep->dma = pxa_request_dma ((char *)_ep->name, -+ (le16_to_cpu (desc->wMaxPacketSize) > 64) -+ ? DMA_PRIO_MEDIUM /* some iso */ -+ : DMA_PRIO_LOW, -+ dma_nodesc_handler, ep); -+ if (ep->dma >= 0) { -+ *ep->reg_drcmr = DRCMR_MAPVLD | ep->dma; -+ DMSG("%s using dma%d\n", _ep->name, ep->dma); -+ } -+ default: -+ break; -+ } -+#endif -+ DBG(DBG_VERBOSE, "enabled %s\n", _ep->name); -+ return 0; -+} -+ -+static int pxa27x_ep_disable (struct usb_ep *_ep) -+{ -+ struct pxa27x_ep *ep; -+ -+ ep = container_of (_ep, struct pxa27x_ep, ep); -+ if (!_ep || !ep->desc) { -+ DMSG("%s, %s not enabled\n", __FUNCTION__, -+ _ep ? ep->ep.name : NULL); -+ return -EINVAL; -+ } -+ nuke (ep, -ESHUTDOWN); -+ -+#ifdef USE_DMA -+ if (ep->dma >= 0) { -+ *ep->reg_drcmr = 0; -+ pxa_free_dma (ep->dma); -+ ep->dma = -1; -+ } -+#endif -+ -+ /* flush fifo (mostly for IN buffers) */ -+ pxa27x_ep_fifo_flush (_ep); -+ -+ ep->desc = 0; -+ ep->stopped = 1; -+ -+ DBG(DBG_VERBOSE, "%s disabled\n", _ep->name); -+ return 0; -+} -+ -+/*-------------------------------------------------------------------------*/ -+ -+/* for the pxa27x, these can just wrap kmalloc/kfree. gadget drivers -+ * must still pass correctly initialized endpoints, since other controller -+ * drivers may care about how it's currently set up (dma issues etc). -+ */ -+ -+/* -+ * pxa27x_ep_alloc_request - allocate a request data structure -+ */ -+static struct usb_request * -+pxa27x_ep_alloc_request (struct usb_ep *_ep, unsigned int gfp_flags) -+{ -+ struct pxa27x_request *req; -+ -+ req = kmalloc (sizeof *req, gfp_flags); -+ if (!req) -+ return 0; -+ -+ memset (req, 0, sizeof *req); -+ INIT_LIST_HEAD (&req->queue); -+ return &req->req; -+} -+ -+ -+/* -+ * pxa27x_ep_free_request - deallocate a request data structure -+ */ -+static void -+pxa27x_ep_free_request (struct usb_ep *_ep, struct usb_request *_req) -+{ -+ struct pxa27x_request *req; -+ -+ req = container_of(_req, struct pxa27x_request, req); -+ WARN_ON (!list_empty (&req->queue)); -+ kfree(req); -+} -+ -+ -+/* PXA cache needs flushing with DMA I/O (it's dma-incoherent), but there's -+ * no device-affinity and the heap works perfectly well for i/o buffers. -+ * It wastes much less memory than dma_alloc_coherent() would, and even -+ * prevents cacheline (32 bytes wide) sharing problems. -+ */ -+static void * -+pxa27x_ep_alloc_buffer(struct usb_ep *_ep, unsigned bytes, -+ dma_addr_t *dma, unsigned int gfp_flags) -+{ -+ char *retval; -+ -+ retval = kmalloc (bytes, gfp_flags & ~(__GFP_DMA|__GFP_HIGHMEM)); -+ if (retval) -+ *dma = virt_to_bus (retval); -+ return retval; -+} -+ -+static void -+pxa27x_ep_free_buffer(struct usb_ep *_ep, void *buf, dma_addr_t dma, -+ unsigned bytes) -+{ -+ kfree (buf); -+} -+ -+/*-------------------------------------------------------------------------*/ -+ -+/* -+ * done - retire a request; caller blocked irqs -+ */ -+static void done(struct pxa27x_ep *ep, struct pxa27x_request *req, int status) -+{ -+ 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 */ -+ req->req.complete(&ep->ep, &req->req); -+} -+ -+ -+static inline void ep0_idle (struct pxa27x_udc *dev) -+{ -+ dev->ep0state = EP0_IDLE; -+ LED_EP0_OFF; -+} -+ -+static int -+write_packet(volatile u32 *uddr, struct pxa27x_request *req, unsigned max) -+{ -+ u32 *buf; -+ int length, count, remain; -+ -+ buf = (u32*)(req->req.buf + req->req.actual); -+ prefetch(buf); -+ -+ /* how big will this packet be? */ -+ length = min(req->req.length - req->req.actual, max); -+ req->req.actual += length; -+ -+ remain = length & 0x3; -+ count = length & ~(0x3); -+ -+ while (likely(count)) { -+ *uddr = *buf++; -+ count -= 4; -+ } -+ -+ if (remain) { -+ volatile u8* reg=(u8*)uddr; -+ char *rd =(u8*)buf; -+ -+ while (remain--) { -+ *reg=*rd++; -+ } -+ } -+ -+ return length; -+} -+ -+/* -+ * write to an IN endpoint fifo, as many packets as possible. -+ * irqs will use this to write the rest later. -+ * caller guarantees at least one packet buffer is ready (or a zlp). -+ */ -+static int -+write_fifo (struct pxa27x_ep *ep, struct pxa27x_request *req) -+{ -+ unsigned max; -+ -+ max = le16_to_cpu(ep->desc->wMaxPacketSize); -+ do { -+ int count; -+ int is_last, is_short; -+ -+ count = write_packet(ep->reg_udcdr, req, max); -+ -+ /* last packet is usually short (or a zlp) */ -+ if (unlikely (count != max)) -+ is_last = is_short = 1; -+ else { -+ if (likely(req->req.length != req->req.actual) -+ || req->req.zero) -+ is_last = 0; -+ else -+ is_last = 1; -+ /* interrupt/iso maxpacket may not fill the fifo */ -+ is_short = unlikely (max < ep->fifo_size); -+ } -+ -+ DMSG("wrote %s count:%d bytes%s%s %d left %p\n", -+ ep->ep.name, count, -+ is_last ? "/L" : "", is_short ? "/S" : "", -+ req->req.length - req->req.actual, &req->req); -+ -+ /* let loose that packet. maybe try writing another one, -+ * double buffering might work. TSP, TPC, and TFS -+ * bit values are the same for all normal IN endpoints. -+ */ -+ *ep->reg_udccsr = UDCCSR_PC; -+ if (is_short) -+ *ep->reg_udccsr = UDCCSR_SP; -+ -+ /* requests complete when all IN data is in the FIFO */ -+ if (is_last) { -+ done (ep, req, 0); -+ if (list_empty(&ep->queue) || unlikely(ep->dma >= 0)) { -+ pio_irq_disable (ep->ep_num); -+#ifdef USE_DMA -+ /* unaligned data and zlps couldn't use dma */ -+ if (unlikely(!list_empty(&ep->queue))) { -+ req = list_entry(ep->queue.next, -+ struct pxa27x_request, queue); -+ kick_dma(ep,req); -+ return 0; -+ } -+#endif -+ } -+ return 1; -+ } -+ -+ // TODO experiment: how robust can fifo mode tweaking be? -+ // double buffering is off in the default fifo mode, which -+ // prevents TFS from being set here. -+ -+ } while (*ep->reg_udccsr & UDCCSR_FS); -+ return 0; -+} -+ -+/* caller asserts req->pending (ep0 irq status nyet cleared); starts -+ * ep0 data stage. these chips want very simple state transitions. -+ */ -+static inline -+void ep0start(struct pxa27x_udc *dev, u32 flags, const char *tag) -+{ -+ UDCCSR0 = flags|UDCCSR0_SA|UDCCSR0_OPC; -+ UDCISR0 = UDCICR_INT(0, UDC_INT_FIFOERROR | UDC_INT_PACKETCMP); -+ dev->req_pending = 0; -+ DBG(DBG_VERY_NOISY, "%s %s, %02x/%02x\n", -+ __FUNCTION__, tag, UDCCSR0, flags); -+} -+ -+static int -+write_ep0_fifo (struct pxa27x_ep *ep, struct pxa27x_request *req) -+{ -+ unsigned count; -+ int is_short; -+ -+ count = write_packet(&UDCDR0, req, EP0_FIFO_SIZE); -+ ep->dev->stats.write.bytes += count; -+ -+ /* last packet "must be" short (or a zlp) */ -+ is_short = (count != EP0_FIFO_SIZE); -+ -+ DBG(DBG_VERY_NOISY, "ep0in %d bytes %d left %p\n", count, -+ req->req.length - req->req.actual, &req->req); -+ -+ if (unlikely (is_short)) { -+ if (ep->dev->req_pending) -+ ep0start(ep->dev, UDCCSR0_IPR, "short IN"); -+ else -+ UDCCSR0 = UDCCSR0_IPR; -+ -+ count = req->req.length; -+ done (ep, req, 0); -+ ep0_idle(ep->dev); -+#if 0 -+ /* This seems to get rid of lost status irqs in some cases: -+ * host responds quickly, or next request involves config -+ * change automagic, or should have been hidden, or ... -+ * -+ * FIXME get rid of all udelays possible... -+ */ -+ if (count >= EP0_FIFO_SIZE) { -+ count = 100; -+ do { -+ if ((UDCCSR0 & UDCCSR0_OPC) != 0) { -+ /* clear OPC, generate ack */ -+ UDCCSR0 = UDCCSR0_OPC; -+ break; -+ } -+ count--; -+ udelay(1); -+ } while (count); -+ } -+#endif -+ } else if (ep->dev->req_pending) -+ ep0start(ep->dev, 0, "IN"); -+ return is_short; -+} -+ -+ -+/* -+ * read_fifo - unload packet(s) from the fifo we use for usb OUT -+ * transfers and put them into the request. caller should have made -+ * sure there's at least one packet ready. -+ * -+ * returns true if the request completed because of short packet or the -+ * request buffer having filled (and maybe overran till end-of-packet). -+ */ -+static int -+read_fifo (struct pxa27x_ep *ep, struct pxa27x_request *req) -+{ -+ for (;;) { -+ u32 *buf; -+ int bufferspace, count, is_short; -+ -+ /* make sure there's a packet in the FIFO.*/ -+ if (unlikely ((*ep->reg_udccsr & UDCCSR_PC) == 0)) -+ break; -+ buf =(u32*) (req->req.buf + req->req.actual); -+ prefetchw(buf); -+ bufferspace = req->req.length - req->req.actual; -+ -+ /* read all bytes from this packet */ -+ if (likely (*ep->reg_udccsr & UDCCSR_BNE)) { -+ count = 0x3ff & *ep->reg_udcbcr; -+ req->req.actual += min (count, bufferspace); -+ } else /* zlp */ -+ count = 0; -+ -+ is_short = (count < ep->ep.maxpacket); -+ DMSG("read %s udccsr:%02x, count:%d bytes%s req %p %d/%d\n", -+ ep->ep.name, *ep->reg_udccsr, count, -+ is_short ? "/S" : "", -+ &req->req, req->req.actual, req->req.length); -+ -+// dump_regs(ep->ep_num ); -+ count = min(count, bufferspace); -+ while (likely (count > 0)) { -+ *buf++ = *ep->reg_udcdr; -+ count -= 4; -+ } -+ DMSG("Buf:0x%p\n", req->req.buf); -+ -+ *ep->reg_udccsr = UDCCSR_PC; -+ /* RPC/RSP/RNE could now reflect the other packet buffer */ -+ -+ /* completion */ -+ if (is_short || req->req.actual == req->req.length) { -+ done (ep, req, 0); -+ if (list_empty(&ep->queue)) -+ pio_irq_disable (ep->ep_num); -+ return 1; -+ } -+ -+ /* finished that packet. the next one may be waiting... */ -+ } -+ return 0; -+} -+ -+/* -+ * special ep0 version of the above. no UBCR0 or double buffering; status -+ * handshaking is magic. most device protocols don't need control-OUT. -+ * CDC vendor commands (and RNDIS), mass storage CB/CBI, and some other -+ * protocols do use them. -+ */ -+static int -+read_ep0_fifo (struct pxa27x_ep *ep, struct pxa27x_request *req) -+{ -+ u32 *buf, word; -+ unsigned bufferspace; -+ -+ buf = (u32*) (req->req.buf + req->req.actual); -+ bufferspace = req->req.length - req->req.actual; -+ -+ while (UDCCSR0 & UDCCSR0_RNE) { -+ word = UDCDR0; -+ -+ if (unlikely (bufferspace == 0)) { -+ /* this happens when the driver's buffer -+ * is smaller than what the host sent. -+ * discard the extra data. -+ */ -+ if (req->req.status != -EOVERFLOW) -+ DMSG("%s overflow\n", ep->ep.name); -+ req->req.status = -EOVERFLOW; -+ } else { -+ *buf++ = word; -+ req->req.actual += 4; -+ bufferspace -= 4; -+ } -+ } -+ -+ UDCCSR0 = UDCCSR0_OPC ; -+ -+ /* completion */ -+ if (req->req.actual >= req->req.length) -+ return 1; -+ -+ /* finished that packet. the next one may be waiting... */ -+ return 0; -+} -+ -+#ifdef USE_DMA -+ -+#define MAX_IN_DMA ((DCMD_LENGTH + 1) - BULK_FIFO_SIZE) -+static void kick_dma(struct pxa27x_ep *ep, struct pxa27x_request *req) -+{ -+ u32 dcmd = 0; -+ u32 len = req->req.length; -+ u32 buf = req->req.dma; -+ u32 fifo = io_v2p ((u32)ep->reg_udcdr); -+ -+ buf += req->req.actual; -+ len -= req->req.actual; -+ ep->dma_con = 0; -+ -+ DMSG("%s: req:0x%p length:%d, actual:%d dma:%d\n", -+ __FUNCTION__, &req->req, req->req.length, -+ req->req.actual,ep->dma); -+ -+ /* no-descriptor mode can be simple for bulk-in, iso-in, iso-out */ -+ DCSR(ep->dma) = DCSR_NODESC; -+ if (buf & 0x3) -+ DALGN |= 1 << ep->dma; -+ else -+ DALGN &= ~(1 << ep->dma); -+ -+ if (ep->dir_in) { -+ DSADR(ep->dma) = buf; -+ DTADR(ep->dma) = fifo; -+ if (len > MAX_IN_DMA) { -+ len= MAX_IN_DMA; -+ ep->dma_con =1 ; -+ } else if (len >= ep->ep.maxpacket) { -+ if ((ep->dma_con = (len % ep->ep.maxpacket) != 0)) -+ len = ep->ep.maxpacket; -+ } -+ dcmd = len | DCMD_BURST32 | DCMD_WIDTH4 | DCMD_ENDIRQEN -+ | DCMD_FLOWTRG | DCMD_INCSRCADDR; -+ } else { -+ DSADR(ep->dma) = fifo; -+ DTADR(ep->dma) = buf; -+ dcmd = len | DCMD_BURST32 | DCMD_WIDTH4 | DCMD_ENDIRQEN -+ | DCMD_FLOWSRC | DCMD_INCTRGADDR; -+ } -+ *ep->reg_udccsr = UDCCSR_DME; -+ DCMD(ep->dma) = dcmd; -+ DCSR(ep->dma) = DCSR_NODESC | DCSR_EORIRQEN \ -+ | ((ep->dir_in) ? DCSR_STOPIRQEN : 0); -+ *ep->reg_drcmr = ep->dma | DRCMR_MAPVLD; -+ DCSR(ep->dma) |= DCSR_RUN; -+} -+ -+static void cancel_dma(struct pxa27x_ep *ep) -+{ -+ struct pxa27x_request *req; -+ u32 tmp; -+ -+ if (DCSR(ep->dma) == 0 || list_empty(&ep->queue)) -+ return; -+ -+ DMSG("hehe dma:%d,dcsr:0x%x\n", ep->dma, DCSR(ep->dma)); -+ DCSR(ep->dma) = 0; -+ while ((DCSR(ep->dma) & DCSR_STOPSTATE) == 0) -+ cpu_relax(); -+ -+ req = list_entry(ep->queue.next, struct pxa27x_request, queue); -+ tmp = DCMD(ep->dma) & DCMD_LENGTH; -+ req->req.actual = req->req.length - tmp; -+ -+ /* the last tx packet may be incomplete, so flush the fifo. -+ * FIXME correct req.actual if we can -+ */ -+ *ep->reg_udccsr = UDCCSR_FEF; -+} -+ -+static void dma_nodesc_handler(int dmach, void *_ep, struct pt_regs *r) -+{ -+ struct pxa27x_ep *ep = _ep; -+ struct pxa27x_request *req, *req_next; -+ u32 dcsr, tmp, completed; -+ -+ local_irq_disable(); -+ -+ req = list_entry(ep->queue.next, struct pxa27x_request, queue); -+ -+ DMSG("%s, buf:0x%p\n",__FUNCTION__, req->req.buf); -+ -+ ep->dma_irqs++; -+ ep->dev->stats.irqs++; -+ HEX_DISPLAY(ep->dev->stats.irqs); -+ -+ completed = 0; -+ -+ dcsr = DCSR(dmach); -+ DCSR(ep->dma) &= ~DCSR_RUN; -+ -+ if (dcsr & DCSR_BUSERR) { -+ DCSR(dmach) = DCSR_BUSERR; -+ printk(KERN_ERR " Buss Error\n"); -+ req->req.status = -EIO; -+ completed = 1; -+ } else if (dcsr & DCSR_ENDINTR) { -+ DCSR(dmach) = DCSR_ENDINTR; -+ if (ep->dir_in) { -+ tmp = req->req.length - req->req.actual; -+ /* Last packet is a short one*/ -+ if ( tmp < ep->ep.maxpacket) { -+ int count = 0; -+ -+ *ep->reg_udccsr = UDCCSR_SP | \ -+ (*ep->reg_udccsr & UDCCSR_MASK); -+ /*Wait for packet out */ -+ while( (count++ < 10000) && \ -+ !(*ep->reg_udccsr & UDCCSR_FS)); -+ if (count >= 10000) -+ DMSG("Failed to send packet\n"); -+ else -+ DMSG("%s: short packet sent len:%d," -+ "length:%d,actual:%d\n", __FUNCTION__, -+ tmp, req->req.length, req->req.actual); -+ req->req.actual = req->req.length; -+ completed = 1; -+ /* There are still packets to transfer */ -+ } else if ( ep->dma_con) { -+ DMSG("%s: more packets,length:%d,actual:%d\n", -+ __FUNCTION__,req->req.length, -+ req->req.actual); -+ req->req.actual += ep->ep.maxpacket; -+ completed = 0; -+ } else { -+ DMSG("%s: no more packets,length:%d," -+ "actual:%d\n", __FUNCTION__, -+ req->req.length, req->req.actual); -+ req->req.actual = req->req.length; -+ completed = 1; -+ } -+ } else { -+ req->req.actual = req->req.length; -+ completed = 1; -+ } -+ } else if (dcsr & DCSR_EORINTR) { //Only happened in OUT DMA -+ int remain,udccsr ; -+ -+ DCSR(dmach) = DCSR_EORINTR; -+ remain = DCMD(dmach) & DCMD_LENGTH; -+ req->req.actual = req->req.length - remain; -+ -+ udccsr = *ep->reg_udccsr; -+ if (udccsr & UDCCSR_SP) { -+ *ep->reg_udccsr = UDCCSR_PC | (udccsr & UDCCSR_MASK); -+ completed = 1; -+ } -+ DMSG("%s: length:%d actual:%d\n", -+ __FUNCTION__, req->req.length, req->req.actual); -+ } else -+ DMSG("%s: Others dma:%d DCSR:0x%x DCMD:0x%x\n", -+ __FUNCTION__, dmach, DCSR(dmach), DCMD(dmach)); -+ -+ if (likely(completed)) { -+ if (req->queue.next != &ep->queue) { -+ req_next = list_entry(req->queue.next, -+ struct pxa27x_request, queue); -+ kick_dma(ep, req_next); -+ } -+ done(ep, req, 0); -+ } else { -+ kick_dma(ep, req); -+ } -+ -+ local_irq_enable(); -+} -+ -+#endif -+/*-------------------------------------------------------------------------*/ -+ -+static int -+pxa27x_ep_queue(struct usb_ep *_ep, struct usb_request *_req, unsigned int gfp_flags) -+{ -+ struct pxa27x_ep *ep; -+ struct pxa27x_request *req; -+ struct pxa27x_udc *dev; -+ unsigned long flags; -+ -+ req = container_of(_req, struct pxa27x_request, req); -+ if (unlikely (!_req || !_req->complete || !_req->buf|| -+ !list_empty(&req->queue))) { -+ DMSG("%s, bad params\n", __FUNCTION__); -+ return -EINVAL; -+ } -+ -+ ep = container_of(_ep, struct pxa27x_ep, ep); -+ if (unlikely (!_ep || (!ep->desc && ep->ep.name != ep0name))) { -+ DMSG("%s, bad ep\n", __FUNCTION__); -+ return -EINVAL; -+ } -+ -+ DMSG("%s, ep point %d is queue\n", __FUNCTION__, ep->ep_num); -+ -+ dev = ep->dev; -+ if (unlikely (!dev->driver -+ || dev->gadget.speed == USB_SPEED_UNKNOWN)) { -+ DMSG("%s, bogus device state\n", __FUNCTION__); -+ return -ESHUTDOWN; -+ } -+ -+ /* iso is always one packet per request, that's the only way -+ * we can report per-packet status. that also helps with dma. -+ */ -+ if (unlikely (ep->ep_type == USB_ENDPOINT_XFER_ISOC -+ && req->req.length > le16_to_cpu -+ (ep->desc->wMaxPacketSize))) -+ return -EMSGSIZE; -+ -+#ifdef USE_DMA -+ /* FIXME: caller may already have done the dma mapping */ -+ if (ep->dma >= 0) { -+ _req->dma = dma_map_single(dev->dev, _req->buf, _req->length, -+ (ep->dir_in) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); -+ } -+#endif -+ -+ DBG(DBG_NOISY, "%s queue req %p, len %d buf %p\n", -+ _ep->name, _req, _req->length, _req->buf); -+ -+ local_irq_save(flags); -+ -+ _req->status = -EINPROGRESS; -+ _req->actual = 0; -+ -+ /* kickstart this i/o queue? */ -+ if (list_empty(&ep->queue) && !ep->stopped) { -+ if (ep->desc == 0 /* ep0 */) { -+ unsigned length = _req->length; -+ -+ switch (dev->ep0state) { -+ case EP0_IN_DATA_PHASE: -+ dev->stats.write.ops++; -+ if (write_ep0_fifo(ep, req)) -+ req = 0; -+ break; -+ -+ case EP0_OUT_DATA_PHASE: -+ dev->stats.read.ops++; -+ if (dev->req_pending) -+ ep0start(dev, UDCCSR0_IPR, "OUT"); -+ if (length == 0 || ((UDCCSR0 & UDCCSR0_RNE) != 0 -+ && read_ep0_fifo(ep, req))) { -+ ep0_idle(dev); -+ done(ep, req, 0); -+ req = 0; -+ } -+ break; -+ case EP0_NO_ACTION: -+ ep0_idle(dev); -+ req=0; -+ break; -+ default: -+ DMSG("ep0 i/o, odd state %d\n", dev->ep0state); -+ local_irq_restore (flags); -+ return -EL2HLT; -+ } -+#ifdef USE_DMA -+ /* either start dma or prime pio pump */ -+ } else if (ep->dma >= 0) { -+ kick_dma(ep, req); -+#endif -+ /* can the FIFO can satisfy the request immediately? */ -+ } else if (ep->dir_in -+ && (*ep->reg_udccsr & UDCCSR_FS) != 0 -+ && write_fifo(ep, req)) { -+ req = 0; -+ } else if ((*ep->reg_udccsr & UDCCSR_FS) != 0 -+ && read_fifo(ep, req)) { -+ req = 0; -+ } -+ DMSG("req:%p,ep->desc:%p,ep->dma:%d\n", req, ep->desc, ep->dma); -+ if (likely (req && ep->desc) && ep->dma < 0) -+ pio_irq_enable(ep->ep_num); -+ } -+ -+ /* pio or dma irq handler advances the queue. */ -+ if (likely (req != 0)) -+ list_add_tail(&req->queue, &ep->queue); -+ local_irq_restore(flags); -+ -+ return 0; -+} -+ -+ -+/* -+ * nuke - dequeue ALL requests -+ */ -+static void nuke(struct pxa27x_ep *ep, int status) -+{ -+ struct pxa27x_request *req; -+ -+ /* called with irqs blocked */ -+#ifdef USE_DMA -+ if (ep->dma >= 0 && !ep->stopped) -+ cancel_dma(ep); -+#endif -+ while (!list_empty(&ep->queue)) { -+ req = list_entry(ep->queue.next, struct pxa27x_request, queue); -+ done(ep, req, status); -+ } -+ if (ep->desc) -+ pio_irq_disable (ep->ep_num); -+} -+ -+ -+/* dequeue JUST ONE request */ -+static int pxa27x_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) -+{ -+ struct pxa27x_ep *ep; -+ struct pxa27x_request *req; -+ unsigned long flags; -+ -+ ep = container_of(_ep, struct pxa27x_ep, ep); -+ if (!_ep || ep->ep.name == ep0name) -+ return -EINVAL; -+ -+ local_irq_save(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) { -+ local_irq_restore(flags); -+ return -EINVAL; -+ } -+ -+#ifdef USE_DMA -+ if (ep->dma >= 0 && ep->queue.next == &req->queue && !ep->stopped) { -+ cancel_dma(ep); -+ done(ep, req, -ECONNRESET); -+ /* restart i/o */ -+ if (!list_empty(&ep->queue)) { -+ req = list_entry(ep->queue.next, -+ struct pxa27x_request, queue); -+ kick_dma(ep, req); -+ } -+ } else -+#endif -+ done(ep, req, -ECONNRESET); -+ -+ local_irq_restore(flags); -+ return 0; -+} -+ -+/*-------------------------------------------------------------------------*/ -+ -+static int pxa27x_ep_set_halt(struct usb_ep *_ep, int value) -+{ -+ struct pxa27x_ep *ep; -+ unsigned long flags; -+ -+ DMSG("%s is called\n", __FUNCTION__); -+ ep = container_of(_ep, struct pxa27x_ep, ep); -+ if (unlikely (!_ep -+ || (!ep->desc && ep->ep.name != ep0name)) -+ || ep->ep_type == USB_ENDPOINT_XFER_ISOC) { -+ DMSG("%s, bad ep\n", __FUNCTION__); -+ return -EINVAL; -+ } -+ if (value == 0) { -+ /* this path (reset toggle+halt) is needed to implement -+ * SET_INTERFACE on normal hardware. but it can't be -+ * done from software on the PXA UDC, and the hardware -+ * forgets to do it as part of SET_INTERFACE automagic. -+ */ -+ DMSG("only host can clear %s halt\n", _ep->name); -+ return -EROFS; -+ } -+ -+ local_irq_save(flags); -+ -+ if (ep->dir_in && ((*ep->reg_udccsr & UDCCSR_FS) == 0 -+ || !list_empty(&ep->queue))) { -+ local_irq_restore(flags); -+ return -EAGAIN; -+ } -+ -+ /* FST bit is the same for control, bulk in, bulk out, interrupt in */ -+ *ep->reg_udccsr = UDCCSR_FST|UDCCSR_FEF; -+ -+ /* ep0 needs special care */ -+ if (!ep->desc) { -+ start_watchdog(ep->dev); -+ ep->dev->req_pending = 0; -+ ep->dev->ep0state = EP0_STALL; -+ LED_EP0_OFF; -+ -+ /* and bulk/intr endpoints like dropping stalls too */ -+ } else { -+ unsigned i; -+ for (i = 0; i < 1000; i += 20) { -+ if (*ep->reg_udccsr & UDCCSR_SST) -+ break; -+ udelay(20); -+ } -+ } -+ local_irq_restore(flags); -+ -+ DBG(DBG_VERBOSE, "%s halt\n", _ep->name); -+ return 0; -+} -+ -+static int pxa27x_ep_fifo_status(struct usb_ep *_ep) -+{ -+ struct pxa27x_ep *ep; -+ -+ ep = container_of(_ep, struct pxa27x_ep, ep); -+ if (!_ep) { -+ DMSG("%s, bad ep\n", __FUNCTION__); -+ return -ENODEV; -+ } -+ /* pxa can't report unclaimed bytes from IN fifos */ -+ if (ep->dir_in) -+ return -EOPNOTSUPP; -+ if (ep->dev->gadget.speed == USB_SPEED_UNKNOWN -+ || (*ep->reg_udccsr & UDCCSR_FS) == 0) -+ return 0; -+ else -+ return (*ep->reg_udcbcr & 0xfff) + 1; -+} -+ -+static void pxa27x_ep_fifo_flush(struct usb_ep *_ep) -+{ -+ struct pxa27x_ep *ep; -+ -+ ep = container_of(_ep, struct pxa27x_ep, ep); -+ if (!_ep || ep->ep.name == ep0name || !list_empty(&ep->queue)) { -+ DMSG("%s, bad ep\n", __FUNCTION__); -+ return; -+ } -+ -+ /* toggle and halt bits stay unchanged */ -+ -+ /* for OUT, just read and discard the FIFO contents. */ -+ if (!ep->dir_in) { -+ while (((*ep->reg_udccsr) & UDCCSR_BNE) != 0) -+ (void) *ep->reg_udcdr; -+ return; -+ } -+ -+ /* most IN status is the same, but ISO can't stall */ -+ *ep->reg_udccsr = UDCCSR_PC|UDCCSR_FST|UDCCSR_TRN -+ | (ep->ep_type == USB_ENDPOINT_XFER_ISOC) -+ ? 0 : UDCCSR_SST; -+} -+ -+ -+static struct usb_ep_ops pxa27x_ep_ops = { -+ .enable = pxa27x_ep_enable, -+ .disable = pxa27x_ep_disable, -+ -+ .alloc_request = pxa27x_ep_alloc_request, -+ .free_request = pxa27x_ep_free_request, -+ -+ .alloc_buffer = pxa27x_ep_alloc_buffer, -+ .free_buffer = pxa27x_ep_free_buffer, -+ -+ .queue = pxa27x_ep_queue, -+ .dequeue = pxa27x_ep_dequeue, -+ -+ .set_halt = pxa27x_ep_set_halt, -+ .fifo_status = pxa27x_ep_fifo_status, -+ .fifo_flush = pxa27x_ep_fifo_flush, -+}; -+ -+ -+/* --------------------------------------------------------------------------- -+ * device-scoped parts of the api to the usb controller hardware -+ * --------------------------------------------------------------------------- -+ */ -+ -+static inline void validate_fifo_size(struct pxa27x_ep *pxa_ep, u8 bmAttributes) -+{ -+ switch (bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { -+ case USB_ENDPOINT_XFER_CONTROL: -+ pxa_ep->fifo_size = EP0_FIFO_SIZE; -+ break; -+ case USB_ENDPOINT_XFER_ISOC: -+ pxa_ep->fifo_size = ISO_FIFO_SIZE; -+ break; -+ case USB_ENDPOINT_XFER_BULK: -+ pxa_ep->fifo_size = BULK_FIFO_SIZE; -+ break; -+ case USB_ENDPOINT_XFER_INT: -+ pxa_ep->fifo_size = INT_FIFO_SIZE; -+ break; -+ default: -+ break; -+ } -+} -+ -+#define NAME_SIZE 18 -+struct usb_ep* pxa27x_ep_alloc(struct usb_gadget *gadget, struct usb_endpoint_descriptor *desc, int config, int interface, int alt) -+{ -+ u32 tmp ; -+ unsigned i; -+ char* name; -+ struct usb_ep * ep = NULL; -+ struct pxa27x_ep *pxa_ep = NULL; -+ struct pxa27x_udc *dev = the_controller; -+ -+ DMSG("pxa27x_config_ep is called\n"); -+ DMSG(" usb endpoint descriptor is:\n" -+ " bLength:%d\n" -+ " bDescriptorType:%x\n" -+ " bEndpointAddress:%x\n" -+ " bmAttributes:%x\n" -+ " wMaxPacketSize:%d\n", -+ desc->bLength, -+ desc->bDescriptorType,desc->bEndpointAddress, -+ desc->bmAttributes,desc->wMaxPacketSize); -+ -+ for (i = 1; i < UDC_EP_NUM; i++) { -+ if(!dev->ep[i].assigned) { -+ pxa_ep = &dev->ep[i]; -+ pxa_ep->assigned = 1; -+ pxa_ep->ep_num = i; -+ break; -+ } -+ } -+ if (unlikely(i == UDC_EP_NUM)) { -+ printk(KERN_ERR __FILE__ ": Failed to find a spare endpoint\n"); -+ return ep; -+ } -+ -+ -+ ep = &pxa_ep->ep; -+ -+ pxa_ep->dev = dev; -+ pxa_ep->desc = desc; -+ pxa_ep->pio_irqs = pxa_ep->dma_irqs = 0; -+ pxa_ep->dma = -1; -+ -+ if (!(desc->bEndpointAddress & 0xF)) -+ desc->bEndpointAddress |= i; -+ -+ if (!(desc->wMaxPacketSize)) { -+ validate_fifo_size(pxa_ep, desc->bmAttributes); -+ desc->wMaxPacketSize = pxa_ep->fifo_size; -+ } else -+ pxa_ep->fifo_size = desc->wMaxPacketSize; -+ -+ pxa_ep->dir_in = (desc->bEndpointAddress & USB_DIR_IN) ? 1 : 0; -+ pxa_ep->ep_type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; -+ pxa_ep->stopped = 1; -+ pxa_ep->dma_con = 0; -+ pxa_ep->config = config; -+ pxa_ep->interface = interface; -+ pxa_ep->aisn = alt; -+ -+ pxa_ep->reg_udccsr = &UDCCSR0 + i; -+ pxa_ep->reg_udcbcr = &UDCBCR0 + i; -+ pxa_ep->reg_udcdr = &UDCDR0 + i ; -+ pxa_ep->reg_udccr = &UDCCRA - 1 + i; -+#ifdef USE_DMA -+ pxa_ep->reg_drcmr = &DRCMR24 + i; -+#endif -+ -+ DMSG("udccsr=0x%8x, udcbcr=0x%8x, udcdr=0x%8x," -+ "udccr0=0x%8x\n", -+ (unsigned)pxa_ep->reg_udccsr, -+ (unsigned)pxa_ep->reg_udcbcr, -+ (unsigned)pxa_ep->reg_udcdr, -+ (unsigned)pxa_ep->reg_udccr); -+ -+ /* Configure UDCCR */ -+ tmp = 0; -+ tmp |= (pxa_ep->config << UDCCONR_CN_S) & UDCCONR_CN; -+#if 0 -+ tmp |= (pxa_ep->interface << UDCCONR_IN_S) & UDCCONR_IN; -+ tmp |= (pxa_ep->aisn << UDCCONR_AISN_S) & UDCCONR_AISN; -+#else -+ tmp |= (0 << UDCCONR_IN_S) & UDCCONR_IN; -+ tmp |= (0 << UDCCONR_AISN_S) & UDCCONR_AISN; -+#endif -+ tmp |= (desc->bEndpointAddress << UDCCONR_EN_S) & UDCCONR_EN; -+ tmp |= (pxa_ep->ep_type << UDCCONR_ET_S) & UDCCONR_ET; -+ tmp |= (pxa_ep->dir_in) ? UDCCONR_ED : 0; -+ tmp |= (min(pxa_ep->fifo_size, (unsigned)desc->wMaxPacketSize) \ -+ << UDCCONR_MPS_S ) & UDCCONR_MPS; -+ tmp |= UDCCONR_DE | UDCCONR_EE; -+// tmp |= UDCCONR_EE; -+ -+ *pxa_ep->reg_udccr = tmp; -+ -+#ifdef USE_DMA -+ /* Only BULK use DMA */ -+ if ((pxa_ep->ep_type & USB_ENDPOINT_XFERTYPE_MASK)\ -+ == USB_ENDPOINT_XFER_BULK) -+ *pxa_ep->reg_udccsr = UDCCSR_DME; -+#endif -+ -+ DMSG("UDCCR: 0x%p is 0x%x\n", pxa_ep->reg_udccr,*pxa_ep->reg_udccr); -+ -+ /* Fill ep name*/ -+ name = kmalloc(NAME_SIZE, GFP_KERNEL); -+ if (!name) { -+ printk(KERN_ERR "%s: Error\n", __FUNCTION__); -+ return NULL; -+ } -+ -+ switch (pxa_ep->ep_type) { -+ case USB_ENDPOINT_XFER_BULK: -+ sprintf(name, "Bulk-%s-%d", (pxa_ep->dir_in ? "in":"out"), i); -+ break; -+ case USB_ENDPOINT_XFER_INT: -+ sprintf(name, "Interrupt-%s-%d", (pxa_ep->dir_in ? \ -+ "in":"out"), i); -+ break; -+ default: -+ sprintf(name, "endpoint-%s-%d", (pxa_ep->dir_in ? \ -+ "in":"out"), i); -+ break; -+ } -+ ep->name = name; -+ -+ ep->ops = &pxa27x_ep_ops; -+ ep->maxpacket = min((ushort)pxa_ep->fifo_size, desc->wMaxPacketSize); -+ -+ list_add_tail (&ep->ep_list, &gadget->ep_list); -+ return ep; -+} -+ -+static int pxa27x_udc_get_frame(struct usb_gadget *_gadget) -+{ -+ return (UDCFNR & 0x3FF); -+} -+ -+static int pxa27x_udc_wakeup(struct usb_gadget *_gadget) -+{ -+ /* host may not have enabled remote wakeup */ -+ if ((UDCCR & UDCCR_DWRE) == 0) -+ return -EHOSTUNREACH; -+ udc_set_mask_UDCCR(UDCCR_UDR); -+ return 0; -+} -+ -+static const struct usb_gadget_ops pxa27x_udc_ops = { -+ .ep_alloc = pxa27x_ep_alloc, -+ .get_frame = pxa27x_udc_get_frame, -+ .wakeup = pxa27x_udc_wakeup, -+ // current versions must always be self-powered -+}; -+ -+ -+/*-------------------------------------------------------------------------*/ -+ -+#ifdef UDC_PROC_FILE -+ -+static const char proc_node_name [] = "driver/udc"; -+ -+static int -+udc_proc_read(char *page, char **start, off_t off, int count, -+ int *eof, void *_dev) -+{ -+ char *buf = page; -+ struct pxa27x_udc *dev = _dev; -+ char *next = buf; -+ unsigned size = count; -+ unsigned long flags; -+ int i, t; -+ u32 tmp; -+ -+ if (off != 0) -+ return 0; -+ -+ local_irq_save(flags); -+ -+ /* basic device status */ -+ t = scnprintf(next, size, DRIVER_DESC "\n" -+ "%s version: %s\nGadget driver: %s\n", -+ driver_name, DRIVER_VERSION SIZE_STR DMASTR, -+ dev->driver ? dev->driver->driver.name : "(none)"); -+ size -= t; -+ next += t; -+ -+ /* registers for device and ep0 */ -+ t = scnprintf(next, size, -+ "uicr %02X.%02X, usir %02X.%02x, ufnr %02X\n", -+ UDCICR1, UDCICR0, UDCISR1, UDCISR0, UDCFNR); -+ size -= t; -+ next += t; -+ -+ tmp = UDCCR; -+ t = scnprintf(next, size,"udccr %02X =%s%s%s%s%s%s%s%s%s%s, con=%d,inter=%d,altinter=%d\n", tmp, -+ (tmp & UDCCR_OEN) ? " oen":"", -+ (tmp & UDCCR_AALTHNP) ? " aalthnp":"", -+ (tmp & UDCCR_AHNP) ? " rem" : "", -+ (tmp & UDCCR_BHNP) ? " rstir" : "", -+ (tmp & UDCCR_DWRE) ? " dwre" : "", -+ (tmp & UDCCR_SMAC) ? " smac" : "", -+ (tmp & UDCCR_EMCE) ? " emce" : "", -+ (tmp & UDCCR_UDR) ? " udr" : "", -+ (tmp & UDCCR_UDA) ? " uda" : "", -+ (tmp & UDCCR_UDE) ? " ude" : "", -+ (tmp & UDCCR_ACN) >> UDCCR_ACN_S, -+ (tmp & UDCCR_AIN) >> UDCCR_AIN_S, -+ (tmp & UDCCR_AAISN)>> UDCCR_AAISN_S ); -+ -+ size -= t; -+ next += t; -+ -+ tmp = UDCCSR0; -+ t = scnprintf(next, size, -+ "udccsr0 %02X =%s%s%s%s%s%s%s\n", tmp, -+ (tmp & UDCCSR0_SA) ? " sa" : "", -+ (tmp & UDCCSR0_RNE) ? " rne" : "", -+ (tmp & UDCCSR0_FST) ? " fst" : "", -+ (tmp & UDCCSR0_SST) ? " sst" : "", -+ (tmp & UDCCSR0_DME) ? " dme" : "", -+ (tmp & UDCCSR0_IPR) ? " ipr" : "", -+ (tmp & UDCCSR0_OPC) ? " opc" : ""); -+ size -= t; -+ next += t; -+ -+ if (!dev->driver) -+ goto done; -+ -+ t = scnprintf(next, size, "ep0 IN %lu/%lu, OUT %lu/%lu\nirqs %lu\n\n", -+ dev->stats.write.bytes, dev->stats.write.ops, -+ dev->stats.read.bytes, dev->stats.read.ops, -+ dev->stats.irqs); -+ size -= t; -+ next += t; -+ -+ /* dump endpoint queues */ -+ for (i = 0; i < UDC_EP_NUM; i++) { -+ struct pxa27x_ep *ep = &dev->ep [i]; -+ struct pxa27x_request *req; -+ int t; -+ -+ if (i != 0) { -+ const struct usb_endpoint_descriptor *d; -+ -+ d = ep->desc; -+ if (!d) -+ continue; -+ tmp = *dev->ep [i].reg_udccsr; -+ t = scnprintf(next, size, -+ "%s max %d %s udccs %02x udccr:0x%x\n", -+ ep->ep.name, le16_to_cpu (d->wMaxPacketSize), -+ (ep->dma >= 0) ? "dma" : "pio", tmp, -+ *dev->ep[i].reg_udccr); -+ /* TODO translate all five groups of udccs bits! */ -+ -+ } else /* ep0 should only have one transfer queued */ -+ t = scnprintf(next, size, "ep0 max 16 pio irqs %lu\n", -+ ep->pio_irqs); -+ if (t <= 0 || t > size) -+ goto done; -+ size -= t; -+ next += t; -+ -+ if (list_empty(&ep->queue)) { -+ t = scnprintf(next, size, "\t(nothing queued)\n"); -+ if (t <= 0 || t > size) -+ goto done; -+ size -= t; -+ next += t; -+ continue; -+ } -+ list_for_each_entry(req, &ep->queue, queue) { -+#ifdef USE_DMA -+ if (ep->dma >= 0 && req->queue.prev == &ep->queue) -+ t = scnprintf(next, size, -+ "\treq %p len %d/%d " -+ "buf %p (dma%d dcmd %08x)\n", -+ &req->req, req->req.actual, -+ req->req.length, req->req.buf, -+ ep->dma, DCMD(ep->dma) -+ // low 13 bits == bytes-to-go -+ ); -+ else -+#endif -+ t = scnprintf(next, size, -+ "\treq %p len %d/%d buf %p\n", -+ &req->req, req->req.actual, -+ req->req.length, req->req.buf); -+ if (t <= 0 || t > size) -+ goto done; -+ size -= t; -+ next += t; -+ } -+ } -+ -+done: -+ local_irq_restore(flags); -+ *eof = 1; -+ return count - size; -+} -+ -+#define create_proc_files() \ -+ create_proc_read_entry(proc_node_name, 0, NULL, udc_proc_read, dev) -+#define remove_proc_files() \ -+ remove_proc_entry(proc_node_name, NULL) -+ -+#else /* !UDC_PROC_FILE */ -+#define create_proc_files() do {} while (0) -+#define remove_proc_files() do {} while (0) -+ -+#endif /* UDC_PROC_FILE */ -+ -+/* "function" sysfs attribute */ -+static ssize_t -+show_function (struct device *_dev, struct device_attribute *attr, char *buf) -+{ -+ struct pxa27x_udc *dev = dev_get_drvdata (_dev); -+ -+ if (!dev->driver -+ || !dev->driver->function -+ || strlen (dev->driver->function) > PAGE_SIZE) -+ return 0; -+ return scnprintf (buf, PAGE_SIZE, "%s\n", dev->driver->function); -+} -+static DEVICE_ATTR (function, S_IRUGO, show_function, NULL); -+ -+/*-------------------------------------------------------------------------*/ -+ -+/* -+ * udc_disable - disable USB device controller -+ */ -+static void udc_disable(struct pxa27x_udc *dev) -+{ -+ UDCICR0 = UDCICR1 = 0x00000000; -+ -+ udc_clear_mask_UDCCR(UDCCR_UDE); -+ -+ /* Disable clock for USB device */ -+ pxa_set_cken(CKEN11_USB, 0); -+ -+ ep0_idle (dev); -+ dev->gadget.speed = USB_SPEED_UNKNOWN; -+ -+ if (dev->mach->gpio_pullup) -+ GPCR(dev->mach->gpio_pullup) = GPIO_bit(dev->mach->gpio_pullup); -+ if (dev->mach->udc_command) -+ dev->mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT); -+ -+ make_usb_disappear(); -+} -+ -+ -+/* -+ * udc_reinit - initialize software state -+ */ -+static void udc_reinit(struct pxa27x_udc *dev) -+{ -+ u32 i; -+ -+ dev->ep0state = EP0_IDLE; -+ -+ /* basic endpoint records init */ -+ for (i = 0; i < UDC_EP_NUM; i++) { -+ struct pxa27x_ep *ep = &dev->ep[i]; -+ -+ ep->stopped = 0; -+ ep->pio_irqs = ep->dma_irqs = 0; -+ } -+ dev->configuration = 0; -+ dev->interface = 0; -+ dev->alternate = 0; -+ /* the rest was statically initialized, and is read-only */ -+} -+ -+/* until it's enabled, this UDC should be completely invisible -+ * to any USB host. -+ */ -+static void udc_enable (struct pxa27x_udc *dev) -+{ -+ udc_clear_mask_UDCCR(UDCCR_UDE); -+ -+ /* Enable clock for USB device */ -+ pxa_set_cken(CKEN11_USB, 1); -+ -+ UDCICR0 = UDCICR1 = 0; -+ -+ ep0_idle(dev); -+ dev->gadget.speed = USB_SPEED_FULL; -+ dev->stats.irqs = 0; -+ -+ udc_set_mask_UDCCR(UDCCR_UDE); -+ udelay (2); -+ if (UDCCR & UDCCR_EMCE) -+ { -+ printk(KERN_ERR ": There are error in configuration, udc disabled\n"); -+ } -+ -+ /* caller must be able to sleep in order to cope -+ * with startup transients. -+ */ -+ msleep(100); -+ -+ /* enable suspend/resume and reset irqs */ -+ UDCICR1 = UDCICR1_IECC | UDCICR1_IERU | UDCICR1_IESU | UDCICR1_IERS; -+ -+ /* enable ep0 irqs */ -+ UDCICR0 = UDCICR_INT(0,UDCICR_INT_MASK); -+#if 0 -+ for(i=1; i < UDC_EP_NUM; i++) { -+ if (dev->ep[i].assigned) -+ pio_irq_enable(i); -+ } -+#endif -+ -+ if (dev->mach->gpio_pullup) -+ GPSR(dev->mach->gpio_pullup) = GPIO_bit(dev->mach->gpio_pullup); -+ if (dev->mach->udc_command) -+ dev->mach->udc_command(PXA2XX_UDC_CMD_CONNECT); -+ -+ /* FIXME */ -+ let_usb_appear(); -+} -+ -+ -+/* when a driver is successfully registered, it will receive -+ * control requests including set_configuration(), which enables -+ * non-control requests. then usb traffic follows until a -+ * disconnect is reported. then a host may connect again, or -+ * the driver might get unbound. -+ */ -+int usb_gadget_register_driver(struct usb_gadget_driver *driver) -+{ -+ struct pxa27x_udc *dev = the_controller; -+ int retval; -+ -+ DMSG("dev=0x%x, driver=0x%x, speed=%d, " -+ "bind=0x%x, unbind=0x%x, disconnect=0x%x, setup=0x%x\n", -+ (unsigned)dev, (unsigned)driver, driver->speed, -+ (unsigned)driver->bind, (unsigned)driver->unbind, -+ (unsigned)driver->disconnect, (unsigned)driver->setup); -+ -+ if (!driver || driver->speed != USB_SPEED_FULL -+ || !driver->bind -+ || !driver->unbind -+ || !driver->disconnect -+ || !driver->setup) -+ return -EINVAL; -+ if (!dev) -+ return -ENODEV; -+ if (dev->driver) -+ return -EBUSY; -+ -+ /* first hook up the driver ... */ -+ dev->driver = driver; -+ dev->gadget.dev.driver = &driver->driver; -+ -+ device_add(&dev->gadget.dev); -+ retval = driver->bind(&dev->gadget); -+ if (retval) { -+ DMSG("bind to driver %s --> error %d\n", -+ driver->driver.name, retval); -+ device_del (&dev->gadget.dev); -+ -+ dev->driver = 0; -+ dev->gadget.dev.driver = 0; -+ return retval; -+ } -+ device_create_file(dev->dev, &dev_attr_function); -+ -+ /* ... then enable host detection and ep0; and we're ready -+ * for set_configuration as well as eventual disconnect. -+ * NOTE: this shouldn't power up until later. -+ */ -+ DMSG("registered gadget driver '%s'\n", driver->driver.name); -+ udc_enable(dev); -+ dump_state(dev); -+ return 0; -+} -+EXPORT_SYMBOL(usb_gadget_register_driver); -+ -+static void -+stop_activity(struct pxa27x_udc *dev, struct usb_gadget_driver *driver) -+{ -+ int i; -+ -+ DMSG("Trace path 1\n"); -+ /* don't disconnect drivers more than once */ -+ if (dev->gadget.speed == USB_SPEED_UNKNOWN) -+ driver = 0; -+ dev->gadget.speed = USB_SPEED_UNKNOWN; -+ -+ /* prevent new request submissions, kill any outstanding requests */ -+ for (i = 0; i < UDC_EP_NUM; i++) { -+ struct pxa27x_ep *ep = &dev->ep[i]; -+ -+ ep->stopped = 1; -+ nuke(ep, -ESHUTDOWN); -+ } -+ del_timer_sync(&dev->timer); -+ -+ /* report disconnect; the driver is already quiesced */ -+ if (driver) -+ driver->disconnect(&dev->gadget); -+ -+ /* re-init driver-visible data structures */ -+ udc_reinit(dev); -+} -+ -+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) -+{ -+ struct pxa27x_udc *dev = the_controller; -+ -+ if (!dev) -+ return -ENODEV; -+ if (!driver || driver != dev->driver) -+ return -EINVAL; -+ -+ local_irq_disable(); -+ udc_disable(dev); -+ stop_activity(dev, driver); -+ local_irq_enable(); -+ -+ driver->unbind(&dev->gadget); -+ dev->driver = 0; -+ -+ device_del (&dev->gadget.dev); -+ device_remove_file(dev->dev, &dev_attr_function); -+ -+ DMSG("unregistered gadget driver '%s'\n", driver->driver.name); -+ dump_state(dev); -+ return 0; -+} -+EXPORT_SYMBOL(usb_gadget_unregister_driver); -+ -+#ifndef enable_disconnect_irq -+#define enable_disconnect_irq() do {} while (0) -+#define disable_disconnect_irq() do {} while (0) -+#endif -+ -+ -+/*-------------------------------------------------------------------------*/ -+ -+static inline void clear_ep_state (struct pxa27x_udc *dev) -+{ -+ unsigned i; -+ -+ /* hardware SET_{CONFIGURATION,INTERFACE} automagic resets endpoint -+ * fifos, and pending transactions mustn't be continued in any case. -+ */ -+ for (i = 1; i < UDC_EP_NUM; i++) -+ nuke(&dev->ep[i], -ECONNABORTED); -+} -+ -+static void udc_watchdog(unsigned long _dev) -+{ -+ struct pxa27x_udc *dev = (void *)_dev; -+ -+ local_irq_disable(); -+ if (dev->ep0state == EP0_STALL -+ && (UDCCSR0 & UDCCSR0_FST) == 0 -+ && (UDCCSR0 & UDCCSR0_SST) == 0) { -+ UDCCSR0 = UDCCSR0_FST|UDCCSR0_FTF; -+ DBG(DBG_VERBOSE, "ep0 re-stall\n"); -+ start_watchdog(dev); -+ } -+ local_irq_enable(); -+} -+ -+static void handle_ep0 (struct pxa27x_udc *dev) -+{ -+ u32 udccsr0 = UDCCSR0; -+ struct pxa27x_ep *ep = &dev->ep [0]; -+ struct pxa27x_request *req; -+ union { -+ struct usb_ctrlrequest r; -+ u8 raw [8]; -+ u32 word [2]; -+ } u; -+ -+ if (list_empty(&ep->queue)) -+ req = 0; -+ else -+ req = list_entry(ep->queue.next, struct pxa27x_request, queue); -+ -+ /* clear stall status */ -+ if (udccsr0 & UDCCSR0_SST) { -+ nuke(ep, -EPIPE); -+ UDCCSR0 = UDCCSR0_SST; -+ del_timer(&dev->timer); -+ ep0_idle(dev); -+ } -+ -+ /* previous request unfinished? non-error iff back-to-back ... */ -+ if ((udccsr0 & UDCCSR0_SA) != 0 && dev->ep0state != EP0_IDLE) { -+ nuke(ep, 0); -+ del_timer(&dev->timer); -+ ep0_idle(dev); -+ } -+ -+ switch (dev->ep0state) { -+ case EP0_NO_ACTION: -+ printk(KERN_INFO"%s: Busy\n", __FUNCTION__); -+ /*Fall through */ -+ case EP0_IDLE: -+ /* late-breaking status? */ -+ udccsr0 = UDCCSR0; -+ -+ /* start control request? */ -+ if (likely((udccsr0 & (UDCCSR0_OPC|UDCCSR0_SA|UDCCSR0_RNE)) -+ == (UDCCSR0_OPC|UDCCSR0_SA|UDCCSR0_RNE))) { -+ int i; -+ -+ nuke (ep, -EPROTO); -+ /* read SETUP packet */ -+ for (i = 0; i < 2; i++) { -+ if (unlikely(!(UDCCSR0 & UDCCSR0_RNE))) { -+bad_setup: -+ DMSG("SETUP %d!\n", i); -+ goto stall; -+ } -+ u.word [i] = UDCDR0; -+ } -+ if (unlikely((UDCCSR0 & UDCCSR0_RNE) != 0)) -+ goto bad_setup; -+ -+ le16_to_cpus (&u.r.wValue); -+ le16_to_cpus (&u.r.wIndex); -+ le16_to_cpus (&u.r.wLength); -+ -+ LED_EP0_ON; -+ -+ DBG(DBG_VERBOSE, "SETUP %02x.%02x v%04x i%04x l%04x\n", -+ u.r.bRequestType, u.r.bRequest, -+ u.r.wValue, u.r.wIndex, u.r.wLength); -+ /* cope with automagic for some standard requests. */ -+ dev->req_std = (u.r.bRequestType & USB_TYPE_MASK) -+ == USB_TYPE_STANDARD; -+ dev->req_config = 0; -+ dev->req_pending = 1; -+#if 0 -+ switch (u.r.bRequest) { -+ /* hardware was supposed to hide this */ -+ case USB_REQ_SET_CONFIGURATION: -+ case USB_REQ_SET_INTERFACE: -+ case USB_REQ_SET_ADDRESS: -+ printk(KERN_ERR "Should not come here\n"); -+ break; -+ } -+ -+#endif -+ if (u.r.bRequestType & USB_DIR_IN) -+ dev->ep0state = EP0_IN_DATA_PHASE; -+ else -+ dev->ep0state = EP0_OUT_DATA_PHASE; -+ i = dev->driver->setup(&dev->gadget, &u.r); -+ -+ if (i < 0) { -+ /* hardware automagic preventing STALL... */ -+ if (dev->req_config) { -+ /* hardware sometimes neglects to tell -+ * tell us about config change events, -+ * so later ones may fail... -+ */ -+ WARN("config change %02x fail %d?\n", -+ u.r.bRequest, i); -+ return; -+ /* TODO experiment: if has_cfr, -+ * hardware didn't ACK; maybe we -+ * could actually STALL! -+ */ -+ } -+ DBG(DBG_VERBOSE, "protocol STALL, " -+ "%02x err %d\n", UDCCSR0, i); -+stall: -+ /* the watchdog timer helps deal with cases -+ * where udc seems to clear FST wrongly, and -+ * then NAKs instead of STALLing. -+ */ -+ ep0start(dev, UDCCSR0_FST|UDCCSR0_FTF, "stall"); -+ start_watchdog(dev); -+ dev->ep0state = EP0_STALL; -+ LED_EP0_OFF; -+ -+ /* deferred i/o == no response yet */ -+ } else if (dev->req_pending) { -+ if (likely(dev->ep0state == EP0_IN_DATA_PHASE -+ || dev->req_std || u.r.wLength)) -+ ep0start(dev, 0, "defer"); -+ else -+ ep0start(dev, UDCCSR0_IPR, "defer/IPR"); -+ } -+ -+ /* expect at least one data or status stage irq */ -+ return; -+ -+ } else { -+ /* some random early IRQ: -+ * - we acked FST -+ * - IPR cleared -+ * - OPC got set, without SA (likely status stage) -+ */ -+ UDCCSR0 = udccsr0 & (UDCCSR0_SA|UDCCSR0_OPC); -+ } -+ break; -+ case EP0_IN_DATA_PHASE: /* GET_DESCRIPTOR etc */ -+ if (udccsr0 & UDCCSR0_OPC) { -+ UDCCSR0 = UDCCSR0_OPC|UDCCSR0_FTF; -+ DBG(DBG_VERBOSE, "ep0in premature status\n"); -+ if (req) -+ done(ep, req, 0); -+ ep0_idle(dev); -+ } else /* irq was IPR clearing */ { -+ if (req) { -+ /* this IN packet might finish the request */ -+ (void) write_ep0_fifo(ep, req); -+ } /* else IN token before response was written */ -+ } -+ break; -+ case EP0_OUT_DATA_PHASE: /* SET_DESCRIPTOR etc */ -+ if (udccsr0 & UDCCSR0_OPC) { -+ if (req) { -+ /* this OUT packet might finish the request */ -+ if (read_ep0_fifo(ep, req)) -+ done(ep, req, 0); -+ /* else more OUT packets expected */ -+ } /* else OUT token before read was issued */ -+ } else /* irq was IPR clearing */ { -+ DBG(DBG_VERBOSE, "ep0out premature status\n"); -+ if (req) -+ done(ep, req, 0); -+ ep0_idle(dev); -+ } -+ break; -+ case EP0_STALL: -+ UDCCSR0 = UDCCSR0_FST; -+ break; -+ } -+ UDCISR0 = UDCISR_INT(0, UDCISR_INT_MASK); -+} -+ -+ -+static void handle_ep(struct pxa27x_ep *ep) -+{ -+ struct pxa27x_request *req; -+ int completed; -+ u32 udccsr=0; -+ -+ DMSG("%s is called\n", __FUNCTION__); -+ do { -+ completed = 0; -+ if (likely (!list_empty(&ep->queue))) { -+ req = list_entry(ep->queue.next, -+ struct pxa27x_request, queue); -+ } else -+ req = 0; -+ -+// udccsr = *ep->reg_udccsr; -+ DMSG("%s: req:%p, udcisr0:0x%x udccsr %p:0x%x\n", __FUNCTION__, -+ req, UDCISR0, ep->reg_udccsr, *ep->reg_udccsr); -+ if (unlikely(ep->dir_in)) { -+ udccsr = (UDCCSR_SST | UDCCSR_TRN) & *ep->reg_udccsr; -+ if (unlikely (udccsr)) -+ *ep->reg_udccsr = udccsr; -+ -+ if (req && likely ((*ep->reg_udccsr & UDCCSR_FS) != 0)) -+ completed = write_fifo(ep, req); -+ -+ } else { -+ udccsr = (UDCCSR_SST | UDCCSR_TRN) & *ep->reg_udccsr; -+ if (unlikely(udccsr)) -+ *ep->reg_udccsr = udccsr; -+ -+ /* fifos can hold packets, ready for reading... */ -+ if (likely(req)) { -+ completed = read_fifo(ep, req); -+ } else { -+ pio_irq_disable (ep->ep_num); -+ *ep->reg_udccsr = UDCCSR_FEF; -+ DMSG("%s: no req for out data\n", -+ __FUNCTION__); -+ } -+ } -+ ep->pio_irqs++; -+ } while (completed); -+} -+ -+static void pxa27x_change_configuration (struct pxa27x_udc *dev) -+{ -+ struct usb_ctrlrequest req ; -+ -+ req.bRequestType = 0; -+ req.bRequest = USB_REQ_SET_CONFIGURATION; -+ req.wValue = dev->configuration; -+ req.wIndex = 0; -+ req.wLength = 0; -+ -+ dev->ep0state = EP0_NO_ACTION; -+ dev->driver->setup(&dev->gadget, &req); -+ -+} -+ -+static void pxa27x_change_interface (struct pxa27x_udc *dev) -+{ -+ struct usb_ctrlrequest req; -+ -+ req.bRequestType = USB_RECIP_INTERFACE; -+ req.bRequest = USB_REQ_SET_INTERFACE; -+ req.wValue = dev->alternate; -+ req.wIndex = dev->interface; -+ req.wLength = 0; -+ -+ dev->ep0state = EP0_NO_ACTION; -+ dev->driver->setup(&dev->gadget, &req); -+} -+ -+/* -+ * pxa27x_udc_irq - interrupt handler -+ * -+ * avoid delays in ep0 processing. the control handshaking isn't always -+ * under software control (pxa250c0 and the pxa255 are better), and delays -+ * could cause usb protocol errors. -+ */ -+static irqreturn_t pxa27x_udc_irq(int irq, void *_dev) -+{ -+ struct pxa27x_udc *dev = _dev; -+ int handled; -+ -+ dev->stats.irqs++; -+ HEX_DISPLAY(dev->stats.irqs); -+ -+ DBG(DBG_VERBOSE, "Interrupt, UDCISR0:0x%08x, UDCISR1:0x%08x, " -+ "UDCCR:0x%08x\n", UDCISR0, UDCISR1, UDCCR); -+ -+ do { -+ u32 udcir = UDCISR1 & 0xF8000000; -+ -+ handled = 0; -+ -+ /* SUSpend Interrupt Request */ -+ if (unlikely(udcir & UDCISR1_IRSU)) { -+ UDCISR1 = UDCISR1_IRSU; -+ handled = 1; -+ DBG(DBG_VERBOSE, "USB suspend\n"); -+ if (dev->gadget.speed != USB_SPEED_UNKNOWN -+ && dev->driver -+ && dev->driver->suspend) -+ dev->driver->suspend(&dev->gadget); -+ ep0_idle (dev); -+ } -+ -+ /* RESume Interrupt Request */ -+ if (unlikely(udcir & UDCISR1_IRRU)) { -+ UDCISR1 = UDCISR1_IRRU; -+ handled = 1; -+ DBG(DBG_VERBOSE, "USB resume\n"); -+ -+ if (dev->gadget.speed != USB_SPEED_UNKNOWN -+ && dev->driver -+ && dev->driver->resume) -+ dev->driver->resume(&dev->gadget); -+ } -+ -+ if (unlikely(udcir & UDCISR1_IRCC)) { -+ unsigned config, interface, alternate; -+ -+ handled = 1; -+ DBG(DBG_VERBOSE, "USB SET_CONFIGURATION or " -+ "SET_INTERFACE command received\n"); -+ -+ UDCCR |= UDCCR_SMAC; -+ -+ config = (UDCCR & UDCCR_ACN) >> UDCCR_ACN_S; -+ -+ if (dev->configuration != config) { -+ dev->configuration = config; -+ pxa27x_change_configuration(dev) ; -+ } -+ -+ interface = (UDCCR & UDCCR_AIN) >> UDCCR_AIN_S; -+ alternate = (UDCCR & UDCCR_AAISN) >> UDCCR_AAISN_S; -+ -+ if ( (dev->configuration != interface) || \ -+ (dev->alternate != alternate)){ -+ dev->interface = config; -+ dev->alternate = alternate; -+ pxa27x_change_interface(dev); -+ } -+ -+ UDCISR1 = UDCISR1_IRCC; -+ DMSG("%s: con:%d,inter:%d,alt:%d\n", -+ __FUNCTION__, config,interface, alternate); -+ } -+ -+ /* ReSeT Interrupt Request - USB reset */ -+ if (unlikely(udcir & UDCISR1_IRRS)) { -+ UDCISR1 = UDCISR1_IRRS; -+ handled = 1; -+ -+ if ((UDCCR & UDCCR_UDA) == 0) { -+ DBG(DBG_VERBOSE, "SB reset start\n"); -+ -+ /* reset driver and endpoints, -+ * in case that's not yet done -+ */ -+ stop_activity (dev, dev->driver); -+ -+ } -+ INFO("USB reset\n"); -+ dev->gadget.speed = USB_SPEED_FULL; -+ memset(&dev->stats, 0, sizeof dev->stats); -+ -+ } else { -+ u32 udcisr0 = UDCISR0 ; -+ u32 udcisr1 = UDCISR1 & 0xFFFF; -+ int i; -+ -+ if (unlikely (!udcisr0 && !udcisr1)) -+ continue; -+ -+ DBG(DBG_VERY_NOISY, "irq %02x.%02x\n", udcisr1,udcisr0); -+ -+ /* control traffic */ -+ if (udcisr0 & UDCISR0_IR0) { -+ dev->ep[0].pio_irqs++; -+ handle_ep0(dev); -+ handled = 1; -+ } -+ -+ udcisr0 >>= 2; -+ /* endpoint data transfers */ -+ for (i = 1; udcisr0!=0 && i < 16; udcisr0>>=2,i++) { -+ UDCISR0 = UDCISR_INT(i, UDCISR_INT_MASK); -+ -+ if (udcisr0 & UDC_INT_FIFOERROR) -+ printk(KERN_ERR" Endpoint %d Fifo error\n", i); -+ if (udcisr0 & UDC_INT_PACKETCMP) { -+ handle_ep(&dev->ep[i]); -+ handled = 1; -+ } -+ -+ } -+ -+ for (i = 0; udcisr1!=0 && i < 8; udcisr1 >>= 2, i++) { -+ UDCISR1 = UDCISR_INT(i, UDCISR_INT_MASK); -+ -+ if (udcisr1 & UDC_INT_FIFOERROR) { -+ printk(KERN_ERR" Endpoint %d fifo error\n", (i+16)); -+ } -+ -+ if (udcisr1 & UDC_INT_PACKETCMP) { -+ handle_ep(&dev->ep[i+16]); -+ handled = 1; -+ } -+ } -+ } -+ -+ /* we could also ask for 1 msec SOF (SIR) interrupts */ -+ -+ } while (handled); -+ return IRQ_HANDLED; -+} -+ -+static void udc_init_ep(struct pxa27x_udc *dev) -+{ -+ int i; -+ -+ INIT_LIST_HEAD (&dev->gadget.ep_list); -+ INIT_LIST_HEAD (&dev->gadget.ep0->ep_list); -+ -+ for (i = 0; i < UDC_EP_NUM; i++) { -+ struct pxa27x_ep *ep = &dev->ep[i]; -+ -+ ep->dma = -1; -+ if (i != 0) { -+ memset(ep, 0, sizeof(*ep)); -+ } -+ INIT_LIST_HEAD (&ep->queue); -+ } -+} -+ -+/*-------------------------------------------------------------------------*/ -+ -+static void nop_release (struct device *dev) -+{ -+ DMSG("%s %s\n", __FUNCTION__, dev->bus_id); -+} -+ -+/* this uses load-time allocation and initialization (instead of -+ * doing it at run-time) to save code, eliminate fault paths, and -+ * be more obviously correct. -+ */ -+static struct pxa27x_udc memory = { -+ .gadget = { -+ .ops = &pxa27x_udc_ops, -+ .ep0 = &memory.ep[0].ep, -+ .name = driver_name, -+ .dev = { -+ .bus_id = "gadget", -+ .release = nop_release, -+ }, -+ }, -+ -+ /* control endpoint */ -+ .ep[0] = { -+ .ep = { -+ .name = ep0name, -+ .ops = &pxa27x_ep_ops, -+ .maxpacket = EP0_FIFO_SIZE, -+ }, -+ .dev = &memory, -+ .reg_udccsr = &UDCCSR0, -+ .reg_udcdr = &UDCDR0, -+ } -+}; -+ -+#define CP15R0_VENDOR_MASK 0xffffe000 -+ -+#define CP15R0_XSCALE_VALUE 0x69054000 /* intel/arm/xscale */ -+ -+/* -+ * probe - binds to the platform device -+ */ -+static int pxa27x_udc_probe(struct platform_device *pdev) -+{ -+ struct device *dev = &pdev->dev; -+ struct pxa27x_udc *udc = &memory; -+ int retval; -+ u32 chiprev; -+ -+ /* insist on Intel/ARM/XScale */ -+ asm("mrc%? p15, 0, %0, c0, c0" : "=r" (chiprev)); -+ if ((chiprev & CP15R0_VENDOR_MASK) != CP15R0_XSCALE_VALUE) { -+ printk(KERN_ERR "%s: not XScale!\n", driver_name); -+ return -ENODEV; -+ } -+ /* other non-static parts of init */ -+ udc->dev = dev; -+ udc->mach = dev->platform_data; -+ -+ /* FIXME */ -+ if (udc->mach->gpio_pullup) -+ pxa_gpio_mode((udc->mach->gpio_pullup & GPIO_MD_MASK_NR) | \ -+ GPIO_OUT | GPIO_DFLT_HIGH); -+ -+ init_timer(&udc->timer); -+ udc->timer.function = udc_watchdog; -+ udc->timer.data = (unsigned long) udc; -+ -+ device_initialize(&udc->gadget.dev); -+ udc->gadget.dev.parent = dev; -+ udc->gadget.dev.dma_mask = dev->dma_mask; -+ -+ the_controller = udc; -+ dev_set_drvdata(dev, udc); -+ -+ udc_disable(udc); -+ udc_init_ep(udc); -+ udc_reinit(udc); -+ -+ /* irq setup after old hardware state is cleaned up */ -+ retval = request_irq(IRQ_USB, pxa27x_udc_irq, -+ SA_INTERRUPT, driver_name, udc); -+ if (retval != 0) { -+ printk(KERN_ERR "%s: can't get irq %i, err %d\n", -+ driver_name, IRQ_USB, retval); -+ return -EBUSY; -+ } -+ udc->got_irq = 1; -+ -+ create_proc_files(); -+ -+ return 0; -+} -+ -+static int pxa27x_udc_remove(struct platform_device *pdev) -+{ -+ struct device *dev = &pdev->dev; -+ struct pxa27x_udc *udc = dev->driver_data; -+ -+ udc_disable(udc); -+ remove_proc_files(); -+ usb_gadget_unregister_driver(udc->driver); -+ -+ if (udc->got_irq) { -+ free_irq(IRQ_USB, udc); -+ udc->got_irq = 0; -+ } -+ if (machine_is_lubbock() && udc->got_disc) { -+ free_irq(LUBBOCK_USB_DISC_IRQ, udc); -+ udc->got_disc = 0; -+ } -+ dev_set_drvdata(dev, 0); -+ the_controller = 0; -+ return 0; -+} -+ -+#ifdef CONFIG_PM -+static int pxa27x_udc_suspend(struct platform_device *pdev, pm_message_t state) -+{ -+ struct device *dev = &pdev->dev; -+ struct pxa27x_udc *udc = dev->driver_data; -+ int i; -+ -+ DMSG("%s will go into SUSPEND_POWER_DOWN\n", __FUNCTION__); -+ udc->udccsr0 = UDCCSR0; -+ for(i=1; (i<UDC_EP_NUM); i++) { -+ if (udc->ep[i].assigned) { -+ struct pxa27x_ep *ep = &udc->ep[i]; -+ -+ ep->udccsr_value = *ep->reg_udccsr; -+ ep->udccr_value = *ep->reg_udccr; -+ DMSG("EP%d, udccsr:0x%x, udccr:0x%x\n", -+ i, *ep->reg_udccsr, *ep->reg_udccr); -+ } -+ } -+ -+ udc_clear_mask_UDCCR(UDCCR_UDE); -+ pxa_set_cken(CKEN11_USB, 0); -+ -+ return 0; -+} -+ -+static int pxa27x_udc_resume(struct platform_device *pdev) -+{ -+ struct device *dev = &pdev->dev; -+ struct pxa27x_udc *udc = dev->driver_data; -+ int i; -+ -+ DMSG("%s: udc resume\n", __FUNCTION__); -+ -+ UDCCSR0 = udc->udccsr0 & (UDCCSR0_FST | UDCCSR0_DME); -+ for (i=1; i < UDC_EP_NUM; i++) { -+ if (udc->ep[i].assigned) { -+ struct pxa27x_ep *ep = &udc->ep[i]; -+ -+ *ep->reg_udccsr = ep->udccsr_value; -+ *ep->reg_udccr = ep->udccr_value; -+ DMSG("EP%d, udccsr:0x%x, udccr:0x%x\n", -+ i, *ep->reg_udccsr, *ep->reg_udccr); -+ } -+ } -+ udc_enable(udc); -+ /* OTGPH bit is set when sleep mode is entered. -+ * it indicates that OTG pad is retaining its state. -+ * Upon exit from sleep mode and before clearing OTGPH, -+ * Software must configure the USB OTG pad, UDC, and UHC -+ * to the state they were in before entering sleep mode.*/ -+ PSSR |= PSSR_OTGPH; -+ -+ return 0; -+} -+#else -+#define pxa27x_udc_suspend NULL -+#define pxa27x_udc_resume NULL -+#endif -+ -+/*-------------------------------------------------------------------------*/ -+ -+static struct platform_driver pxa27x_udc_driver = { -+ .probe = pxa27x_udc_probe, -+ .remove = pxa27x_udc_remove, -+ .suspend = pxa27x_udc_suspend, -+ .resume = pxa27x_udc_resume, -+ .driver = { -+ .name = "pxa2xx-udc", -+ }, -+}; -+ -+static int __init udc_init(void) -+{ -+ printk(KERN_INFO "%s: version %s\n", driver_name, DRIVER_VERSION); -+ return platform_driver_register(&pxa27x_udc_driver); -+} -+module_init(udc_init); -+ -+static void __exit udc_exit(void) -+{ -+ platform_driver_unregister(&pxa27x_udc_driver); -+} -+module_exit(udc_exit); -+ -+MODULE_DESCRIPTION(DRIVER_DESC); -+MODULE_AUTHOR("Frank Becker, Robert Schwebel, David Brownell"); -+MODULE_LICENSE("GPL"); -diff --git a/drivers/usb/gadget/pxa27x_udc.h b/drivers/usb/gadget/pxa27x_udc.h -new file mode 100644 -index 0000000..c4b72a2 ---- /dev/null -+++ b/drivers/usb/gadget/pxa27x_udc.h -@@ -0,0 +1,329 @@ -+/* -+ * linux/drivers/usb/gadget/pxa27x_udc.h -+ * Intel PXA27x on-chip full speed USB device controller -+ * -+ * Copyright (C) 2003 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix -+ * Copyright (C) 2003 David Brownell -+ * Copyright (C) 2004 Intel Corporation -+ * -+ * 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 __LINUX_USB_GADGET_PXA27X_H -+#define __LINUX_USB_GADGET_PXA27X_H -+ -+#include <linux/types.h> -+ -+struct pxa27x_udc; -+ -+struct pxa27x_ep { -+ struct usb_ep ep; -+ struct pxa27x_udc *dev; -+ -+ const struct usb_endpoint_descriptor *desc; -+ struct list_head queue; -+ unsigned long pio_irqs; -+ unsigned long dma_irqs; -+ -+ int dma; -+ unsigned fifo_size; -+ unsigned ep_num; -+ unsigned ep_type; -+ -+ unsigned stopped : 1; -+ unsigned dma_con : 1; -+ unsigned dir_in : 1; -+ unsigned assigned : 1; -+ -+ unsigned config; -+ unsigned interface; -+ unsigned aisn; -+ /* UDCCSR = UDC Control/Status Register for this EP -+ * UBCR = UDC Byte Count Remaining (contents of OUT fifo) -+ * UDCDR = UDC Endpoint Data Register (the fifo) -+ * UDCCR = UDC Endpoint Configuration Registers -+ * DRCM = DMA Request Channel Map -+ */ -+ volatile u32 *reg_udccsr; -+ volatile u32 *reg_udcbcr; -+ volatile u32 *reg_udcdr; -+ volatile u32 *reg_udccr; -+#ifdef USE_DMA -+ volatile u32 *reg_drcmr; -+#define drcmr(n) .reg_drcmr = & DRCMR ## n , -+#else -+#define drcmr(n) -+#endif -+ -+#ifdef CONFIG_PM -+ unsigned udccsr_value; -+ unsigned udccr_value; -+#endif -+}; -+ -+struct pxa27x_request { -+ struct usb_request req; -+ struct list_head queue; -+}; -+ -+enum ep0_state { -+ EP0_IDLE, -+ EP0_IN_DATA_PHASE, -+ EP0_OUT_DATA_PHASE, -+// EP0_END_XFER, -+ EP0_STALL, -+ EP0_NO_ACTION -+}; -+ -+#define EP0_FIFO_SIZE ((unsigned)16) -+#define BULK_FIFO_SIZE ((unsigned)64) -+#define ISO_FIFO_SIZE ((unsigned)256) -+#define INT_FIFO_SIZE ((unsigned)8) -+ -+struct udc_stats { -+ struct ep0stats { -+ unsigned long ops; -+ unsigned long bytes; -+ } read, write; -+ unsigned long irqs; -+}; -+ -+#ifdef CONFIG_USB_PXA27X_SMALL -+/* when memory's tight, SMALL config saves code+data. */ -+//#undef USE_DMA -+//#define UDC_EP_NUM 3 -+#endif -+ -+#ifndef UDC_EP_NUM -+#define UDC_EP_NUM 24 -+#endif -+ -+struct pxa27x_udc { -+ struct usb_gadget gadget; -+ struct usb_gadget_driver *driver; -+ -+ enum ep0_state ep0state; -+ struct udc_stats stats; -+ unsigned got_irq : 1, -+ got_disc : 1, -+ has_cfr : 1, -+ req_pending : 1, -+ req_std : 1, -+ req_config : 1; -+ -+#define start_watchdog(dev) mod_timer(&dev->timer, jiffies + (HZ/200)) -+ struct timer_list timer; -+ -+ struct device *dev; -+ struct pxa2xx_udc_mach_info *mach; -+ u64 dma_mask; -+ struct pxa27x_ep ep [UDC_EP_NUM]; -+ -+ unsigned configuration, -+ interface, -+ alternate; -+#ifdef CONFIG_PM -+ unsigned udccsr0; -+#endif -+}; -+ -+/*-------------------------------------------------------------------------*/ -+#if 0 -+#ifdef DEBUG -+#define HEX_DISPLAY(n) do { \ -+ if (machine_is_mainstone())\ -+ { MST_LEDDAT1 = (n); } \ -+ } while(0) -+ -+#define HEX_DISPLAY1(n) HEX_DISPLAY(n) -+ -+#define HEX_DISPLAY2(n) do { \ -+ if (machine_is_mainstone()) \ -+ { MST_LEDDAT2 = (n); } \ -+ } while(0) -+ -+#endif /* DEBUG */ -+#endif -+/*-------------------------------------------------------------------------*/ -+ -+/* LEDs are only for debug */ -+#ifndef HEX_DISPLAY -+#define HEX_DISPLAY(n) do {} while(0) -+#endif -+ -+#ifndef LED_CONNECTED_ON -+#define LED_CONNECTED_ON do {} while(0) -+#define LED_CONNECTED_OFF do {} while(0) -+#endif -+#ifndef LED_EP0_ON -+#define LED_EP0_ON do {} while (0) -+#define LED_EP0_OFF do {} while (0) -+#endif -+ -+static struct pxa27x_udc *the_controller; -+ -+/*-------------------------------------------------------------------------*/ -+ -+/* one GPIO should be used to detect host disconnect */ -+static inline int is_usb_connected(void) -+{ -+ if (!the_controller->mach->udc_is_connected) -+ return 1; -+ return the_controller->mach->udc_is_connected(); -+} -+ -+/* one GPIO should force the host to see this device (or not) */ -+static inline void make_usb_disappear(void) -+{ -+ if (!the_controller->mach->udc_command) -+ return; -+ the_controller->mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT); -+} -+ -+static inline void let_usb_appear(void) -+{ -+ if (!the_controller->mach->udc_command) -+ return; -+ the_controller->mach->udc_command(PXA2XX_UDC_CMD_CONNECT); -+} -+ -+/*-------------------------------------------------------------------------*/ -+ -+/* -+ * Debugging support vanishes in non-debug builds. DBG_NORMAL should be -+ * mostly silent during normal use/testing, with no timing side-effects. -+ */ -+#define DBG_NORMAL 1 /* error paths, device state transitions */ -+#define DBG_VERBOSE 2 /* add some success path trace info */ -+#define DBG_NOISY 3 /* ... even more: request level */ -+#define DBG_VERY_NOISY 4 /* ... even more: packet level */ -+ -+#ifdef DEBUG -+ -+static const char *state_name[] = { -+ "EP0_IDLE", -+ "EP0_IN_DATA_PHASE", "EP0_OUT_DATA_PHASE", -+ "EP0_END_XFER", "EP0_STALL" -+}; -+ -+#define DMSG(stuff...) printk(KERN_ERR "udc: " stuff) -+ -+#ifdef VERBOSE -+# define UDC_DEBUG DBG_VERBOSE -+#else -+# define UDC_DEBUG DBG_NORMAL -+#endif -+ -+static void __attribute__ ((__unused__)) -+dump_udccr(const char *label) -+{ -+ u32 udccr = UDCCR; -+ DMSG("%s 0x%08x =%s%s%s%s%s%s%s%s%s%s, con=%d,inter=%d,altinter=%d\n", -+ label, udccr, -+ (udccr & UDCCR_OEN) ? " oen":"", -+ (udccr & UDCCR_AALTHNP) ? " aalthnp":"", -+ (udccr & UDCCR_AHNP) ? " rem" : "", -+ (udccr & UDCCR_BHNP) ? " rstir" : "", -+ (udccr & UDCCR_DWRE) ? " dwre" : "", -+ (udccr & UDCCR_SMAC) ? " smac" : "", -+ (udccr & UDCCR_EMCE) ? " emce" : "", -+ (udccr & UDCCR_UDR) ? " udr" : "", -+ (udccr & UDCCR_UDA) ? " uda" : "", -+ (udccr & UDCCR_UDE) ? " ude" : "", -+ (udccr & UDCCR_ACN) >> UDCCR_ACN_S, -+ (udccr & UDCCR_AIN) >> UDCCR_AIN_S, -+ (udccr & UDCCR_AAISN)>> UDCCR_AAISN_S ); -+} -+ -+static void __attribute__ ((__unused__)) -+dump_udccsr0(const char *label) -+{ -+ u32 udccsr0 = UDCCSR0; -+ -+ DMSG("%s %s 0x%08x =%s%s%s%s%s%s%s\n", -+ label, state_name[the_controller->ep0state], udccsr0, -+ (udccsr0 & UDCCSR0_SA) ? " sa" : "", -+ (udccsr0 & UDCCSR0_RNE) ? " rne" : "", -+ (udccsr0 & UDCCSR0_FST) ? " fst" : "", -+ (udccsr0 & UDCCSR0_SST) ? " sst" : "", -+ (udccsr0 & UDCCSR0_DME) ? " dme" : "", -+ (udccsr0 & UDCCSR0_IPR) ? " ipr" : "", -+ (udccsr0 & UDCCSR0_OPC) ? " opr" : ""); -+} -+ -+static void __attribute__ ((__unused__)) -+dump_state(struct pxa27x_udc *dev) -+{ -+ unsigned i; -+ -+ DMSG("%s, udcicr %02X.%02X, udcsir %02X.%02x, udcfnr %02X\n", -+ state_name[dev->ep0state], -+ UDCICR1, UDCICR0, UDCISR1, UDCISR0, UDCFNR); -+ dump_udccr("udccr"); -+ -+ if (!dev->driver) { -+ DMSG("no gadget driver bound\n"); -+ return; -+ } else -+ DMSG("ep0 driver '%s'\n", dev->driver->driver.name); -+ -+ -+ dump_udccsr0 ("udccsr0"); -+ DMSG("ep0 IN %lu/%lu, OUT %lu/%lu\n", -+ dev->stats.write.bytes, dev->stats.write.ops, -+ dev->stats.read.bytes, dev->stats.read.ops); -+ -+ for (i = 1; i < UDC_EP_NUM; i++) { -+ if (dev->ep [i].desc == 0) -+ continue; -+ DMSG ("udccs%d = %02x\n", i, *dev->ep->reg_udccsr); -+ } -+} -+ -+#if 0 -+static void dump_regs(u8 ep) -+{ -+ DMSG("EP:%d UDCCSR:0x%08x UDCBCR:0x%08x\n UDCCR:0x%08x\n", -+ ep,UDCCSN(ep), UDCBCN(ep), UDCCN(ep)); -+} -+static void dump_req (struct pxa27x_request *req) -+{ -+ struct usb_request *r = &req->req; -+ -+ DMSG("%s: buf:0x%08x length:%d dma:0x%08x actual:%d\n", -+ __FUNCTION__, (unsigned)r->buf, r->length, -+ r->dma, r->actual); -+} -+#endif -+ -+#else -+ -+#define DMSG(stuff...) do{}while(0) -+ -+#define dump_udccr(x) do{}while(0) -+#define dump_udccsr0(x) do{}while(0) -+#define dump_state(x) do{}while(0) -+ -+#define UDC_DEBUG ((unsigned)0) -+ -+#endif -+ -+#define DBG(lvl, stuff...) do{if ((lvl) <= UDC_DEBUG) DMSG(stuff);}while(0) -+ -+#define WARN(stuff...) printk(KERN_WARNING "udc: " stuff) -+#define INFO(stuff...) printk(KERN_INFO "udc: " stuff) -+ -+ -+#endif /* __LINUX_USB_GADGET_PXA27X_H */ -diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c -index e552668..971e491 100644 ---- a/drivers/usb/gadget/serial.c -+++ b/drivers/usb/gadget/serial.c -@@ -1378,20 +1378,20 @@ static int __init gs_bind(struct usb_gadget *gadget) - - usb_ep_autoconfig_reset(gadget); - -- ep = usb_ep_autoconfig(gadget, &gs_fullspeed_in_desc); -+ ep = usb_ep_autoconfig(gadget, &gs_fullspeed_in_desc, 0, 0, 0); - if (!ep) - goto autoconf_fail; - EP_IN_NAME = ep->name; - ep->driver_data = ep; /* claim the endpoint */ - -- ep = usb_ep_autoconfig(gadget, &gs_fullspeed_out_desc); -+ ep = usb_ep_autoconfig(gadget, &gs_fullspeed_out_desc, 0, 0, 0); - if (!ep) - goto autoconf_fail; - EP_OUT_NAME = ep->name; - ep->driver_data = ep; /* claim the endpoint */ - - if (use_acm) { -- ep = usb_ep_autoconfig(gadget, &gs_fullspeed_notify_desc); -+ ep = usb_ep_autoconfig(gadget, &gs_fullspeed_notify_desc, 0, 0, 0); - if (!ep) { - printk(KERN_ERR "gs_bind: cannot run ACM on %s\n", gadget->name); - goto autoconf_fail; -diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c -index 8c85e33..46ffe6c 100644 ---- a/drivers/usb/gadget/zero.c -+++ b/drivers/usb/gadget/zero.c -@@ -1155,7 +1155,7 @@ zero_bind (struct usb_gadget *gadget) - * but there may also be important quirks to address. - */ - usb_ep_autoconfig_reset (gadget); -- ep = usb_ep_autoconfig (gadget, &fs_source_desc); -+ ep = usb_ep_autoconfig (gadget, &fs_source_desc, 0, 0, 0); - if (!ep) { - autoconf_fail: - printk (KERN_ERR "%s: can't autoconfigure on %s\n", -@@ -1165,7 +1165,7 @@ autoconf_fail: - EP_IN_NAME = ep->name; - ep->driver_data = ep; /* claim */ - -- ep = usb_ep_autoconfig (gadget, &fs_sink_desc); -+ ep = usb_ep_autoconfig (gadget, &fs_sink_desc, 0, 0, 0); - if (!ep) - goto autoconf_fail; - EP_OUT_NAME = ep->name; -diff --git a/include/linux/usb_gadget.h b/include/linux/usb_gadget.h -index e17186d..64c81fd 100644 ---- a/include/linux/usb_gadget.h -+++ b/include/linux/usb_gadget.h -@@ -445,10 +445,28 @@ usb_ep_fifo_flush (struct usb_ep *ep) - - struct usb_gadget; - -+/** -+ * struct usb_endpoint_config - possible configurations of a given endpoint -+ * @config: the configuration number -+ * @interface: the interface number -+ * @altinterface: the altinterface number -+ * -+ * Used as an array to pass information about the possible configurations -+ * of a given endpoint to the bus controller. -+ */ -+struct usb_endpoint_config { -+ int config; -+ int interface; -+ int altinterface; -+}; -+ - /* the rest of the api to the controller hardware: device operations, - * which don't involve endpoints (or i/o). - */ - struct usb_gadget_ops { -+ struct usb_ep* (*ep_alloc)(struct usb_gadget *gadget, -+ struct usb_endpoint_descriptor *desc, -+ int config, int interface, int alt); - int (*get_frame)(struct usb_gadget *); - int (*wakeup)(struct usb_gadget *); - int (*set_selfpowered) (struct usb_gadget *, int is_selfpowered); -@@ -872,7 +890,8 @@ int usb_gadget_config_buf(const struct usb_config_descriptor *config, - /* utility wrapping a simple endpoint selection policy */ - - extern struct usb_ep *usb_ep_autoconfig (struct usb_gadget *, -- struct usb_endpoint_descriptor *) __devinit; -+ struct usb_endpoint_descriptor *, -+ int, int, int) __devinit; - - extern void usb_ep_autoconfig_reset (struct usb_gadget *) __devinit; - |