/* AT91SAM7 USB interface code for OpenPCD * (C) 2006 by Harald Welte * * 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 * * based on existing AT91SAM7 UDP CDC ACM example code, licensed as followed: *---------------------------------------------------------------------------- * ATMEL Microcontroller Software Support - ROUSSET - *---------------------------------------------------------------------------- * The software is delivered "AS IS" without warranty or condition of any * kind, either express, implied or statutory. This includes without * limitation any warranty or condition with respect to merchantability or * fitness for any particular purpose, or against the infringements of * intellectual property rights of others. *---------------------------------------------------------------------------- */ #include #include #include #include #include #include #include #include #include #include "../openpcd.h" #include //#define DEBUG_UDP_IRQ //#define DEBUG_UDP_IRQ_IN //#define DEBUG_UDP_IRQ_OUT #define DEBUG_UDP_EP0 #ifdef DEBUG_UDP_IRQ #define DEBUGI(x, args ...) DEBUGP(x, ## args) #else #define DEBUGI(x, args ...) do { } while (0) #endif #ifdef DEBUG_UDP_IRQ_IN #define DEBUGII(x, args ...) DEBUGP(x, ## args) #else #define DEBUGII(x, args ...) do { } while (0) #endif #ifdef DEBUG_UDP_IRQ_OUT #define DEBUGIO(x, args ...) DEBUGP(x, ## args) #else #define DEBUGIO(x, args ...) do { } while (0) #endif #define CONFIG_DFU #ifdef CONFIG_DFU static const struct dfuapi *dfu = DFU_API_LOCATION; #define udp_init dfu->udp_init #define udp_ep0_send_data dfu->ep0_send_data #define udp_ep0_send_zlp dfu->ep0_send_zlp #define udp_ep0_send_stall dfu->ep0_send_stall #else #error non-DFU builds currently not supported (yet) again #endif static struct udp_pcd upcd; const struct usb_device_descriptor dev_descriptor = { .bLength = USB_DT_DEVICE_SIZE, .bDescriptorType = USB_DT_DEVICE, .bcdUSB = 0x0200, .bDeviceClass = USB_CLASS_VENDOR_SPEC, .bDeviceSubClass = 0xff, .bDeviceProtocol = 0xff, .bMaxPacketSize0 = 0x08, .idVendor = USB_VENDOR_ID, .idProduct = USB_PRODUCT_ID, .bcdDevice = 0x0000, .iManufacturer = 0x00, .iProduct = 0x00, .iSerialNumber = 0x00, .bNumConfigurations = 0x01, }; struct _desc { struct usb_config_descriptor ucfg; struct usb_interface_descriptor uif; struct usb_endpoint_descriptor ep[3]; #ifdef CONFIG_DFU struct usb_interface_descriptor uif_dfu; struct usb_dfu_func_descriptor func_dfu; #endif }; const struct _desc cfg_descriptor = { .ucfg = { .bLength = USB_DT_CONFIG_SIZE, .bDescriptorType = USB_DT_CONFIG, .wTotalLength = USB_DT_CONFIG_SIZE + #ifdef CONFIG_DFU 2 * USB_DT_INTERFACE_SIZE + 3 * USB_DT_ENDPOINT_SIZE + USB_DT_DFU_SIZE, .bNumInterfaces = 2, #else 1 * USB_DT_INTERFACE_SIZE + 3 * USB_DT_ENDPOINT_SIZE, .bNumInterfaces = 1, #endif .bConfigurationValue = 1, .iConfiguration = 0, .bmAttributes = USB_CONFIG_ATT_ONE, .bMaxPower = 100, /* 200mA */ }, .uif = { .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, .bInterfaceNumber = 0, .bAlternateSetting = 0, .bNumEndpoints = 3, .bInterfaceClass = USB_CLASS_VENDOR_SPEC, .bInterfaceSubClass = 0, .bInterfaceProtocol = 0xff, .iInterface = 0, }, .ep= { { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = OPENPCD_OUT_EP, .bmAttributes = USB_ENDPOINT_XFER_BULK, .wMaxPacketSize = AT91C_EP_OUT_SIZE, .bInterval = 0x00, }, { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = OPENPCD_IN_EP, .bmAttributes = USB_ENDPOINT_XFER_BULK, .wMaxPacketSize = AT91C_EP_IN_SIZE, .bInterval = 0x00, }, { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = OPENPCD_IRQ_EP, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = AT91C_EP_IN_SIZE, .bInterval = 0xff, /* FIXME */ }, }, #ifdef CONFIG_DFU .uif_dfu = DFU_RT_IF_DESC, .func_dfu = DFU_FUNC_DESC, #endif }; static const struct usb_string_descriptor string0 = { .bLength = sizeof(string0), .bDescriptorType = USB_DT_STRING, .wData[0] = 0x0409, /* English */ }; struct epstate { u_int32_t state_busy; u_int32_t state_pending; }; static const struct epstate epstate[] = { [0] = { .state_busy = RCTX_STATE_INVALID }, [1] = { .state_busy = RCTX_STATE_INVALID }, [2] = { .state_busy = RCTX_STATE_UDP_EP2_BUSY, .state_pending = RCTX_STATE_UDP_EP2_PENDING }, [3] = { .state_busy = RCTX_STATE_UDP_EP3_BUSY, .state_pending = RCTX_STATE_UDP_EP3_PENDING }, }; static void reset_ep(unsigned int ep) { AT91PS_UDP pUDP = upcd.pUdp; struct req_ctx *rctx; //pUDP->UDP_CSR[ep] = AT91C_UDP_EPEDS; atomic_set(&upcd.ep[ep].pkts_in_transit, 0); /* free all currently transmitting contexts */ while (rctx = req_ctx_find_get(0, epstate[ep].state_busy, RCTX_STATE_FREE)) {} pUDP->UDP_RSTEP |= (1 << ep); pUDP->UDP_RSTEP &= ~(1 << ep); upcd.ep[ep].incomplete.rctx = NULL; } static void udp_ep0_handler(void); void udp_unthrottle(void) { AT91PS_UDP pUDP = upcd.pUdp; pUDP->UDP_IER = AT91C_UDP_EPINT1; } static int __udp_refill_ep(int ep) { u_int16_t i; AT91PS_UDP pUDP = upcd.pUdp; struct req_ctx *rctx; unsigned int start, end; /* If we're not configured by the host yet, there is no point * in trying to send data to it... */ if (!upcd.cur_config) { return -ENXIO; } /* If there are already two packets in transit, the DPR of * the SAM7 UDC doesn't have space for more data */ if (atomic_read(&upcd.ep[ep].pkts_in_transit) == 2) { return -EBUSY; } /* If we have an incompletely-transmitted req_ctx (>EP size), * we need to transmit the rest and finish the transaction */ if (upcd.ep[ep].incomplete.rctx) { rctx = upcd.ep[ep].incomplete.rctx; start = upcd.ep[ep].incomplete.bytes_sent; } else { /* get pending rctx and start transmitting from zero */ rctx = req_ctx_find_get(0, epstate[ep].state_pending, epstate[ep].state_busy); if (!rctx) return 0; start = 0; upcd.ep[ep].incomplete.bytes_sent = 0; } if (rctx->tot_len - start <= AT91C_EP_IN_SIZE) end = rctx->tot_len; else end = start + AT91C_EP_IN_SIZE; /* fill FIFO/DPR */ DEBUGII("RCTX_tx(ep=%u,ctx=%u):%u ", ep, req_ctx_num(rctx), end - start); for (i = start; i < end; i++) pUDP->UDP_FDR[ep] = rctx->data[i]; if (atomic_inc_return(&upcd.ep[ep].pkts_in_transit) == 1) { /* not been transmitting before, start transmit */ pUDP->UDP_CSR[ep] |= AT91C_UDP_TXPKTRDY; } if ((end - start < AT91C_EP_OUT_SIZE) || (((end - start) == 0) && end && (rctx->tot_len % AT91C_EP_OUT_SIZE) == 0)) { /* CASE 1: return context to pool, if * - packet transfer < AT91C_EP_OUT_SIZE * - after ZLP of transfer == AT91C_EP_OUT_SIZE * - after ZLP of transfer % AT91C_EP_OUT_SIZE == 0 * - after last packet of transfer % AT91C_EP_OUT_SIZE != 0 */ DEBUGII("RCTX(ep=%u)_tx_done ", ep); DEBUGP("RCTX(ep=%u,ctx=%u)_tx_done ", ep, req_ctx_num(rctx)); upcd.ep[ep].incomplete.rctx = NULL; req_ctx_put(rctx); } else { /* CASE 2: mark transfer as incomplete, if * - after data of transfer == AT91C_EP_OUT_SIZE * - after data of transfer > AT91C_EP_OUT_SIZE * - after last packet of transfer % AT91C_EP_OUT_SIZE == 0 */ upcd.ep[ep].incomplete.rctx = rctx; upcd.ep[ep].incomplete.bytes_sent += end - start; DEBUGII("RCTX(ep=%u)_tx_cont ", ep); } return 1; } int udp_refill_ep(int ep) { unsigned long flags; int ret; local_irq_save(flags); ret = __udp_refill_ep(ep); local_irq_restore(flags); } static void udp_irq(void) { u_int32_t csr; AT91PS_UDP pUDP = upcd.pUdp; AT91_REG isr = pUDP->UDP_ISR; DEBUGI("udp_irq(imr=0x%04x, isr=0x%04x): ", pUDP->UDP_IMR, isr); if (isr & AT91C_UDP_ENDBUSRES) { DEBUGI("ENDBUSRES "); pUDP->UDP_ICR = AT91C_UDP_ENDBUSRES; pUDP->UDP_IER = AT91C_UDP_EPINT0; /* reset all endpoints */ pUDP->UDP_RSTEP = (unsigned int)-1; pUDP->UDP_RSTEP = 0; /* Enable the function */ pUDP->UDP_FADDR = AT91C_UDP_FEN; /* Configure endpoint 0 */ pUDP->UDP_CSR[0] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_CTRL); upcd.cur_config = 0; reset_ep(1); reset_ep(2); reset_ep(3); #ifdef CONFIG_DFU if (*dfu->dfu_state == DFU_STATE_appDETACH) { /* now we need to switch to DFU mode */ dfu->dfu_switch(); goto out; } #endif } if (isr & AT91C_UDP_EPINT0) { DEBUGI("EP0INT(Control) "); udp_ep0_handler(); } if (isr & AT91C_UDP_EPINT1) { u_int32_t cur_rcv_bank = upcd.cur_rcv_bank; u_int16_t i, pkt_size; struct req_ctx *rctx; csr = pUDP->UDP_CSR[1]; pkt_size = csr >> 16; DEBUGI("EP1INT(Out, CSR=0x%08x) ", csr); if (cur_rcv_bank == AT91C_UDP_RX_DATA_BK1) DEBUGIO("cur_bank=1 "); else if (cur_rcv_bank == AT91C_UDP_RX_DATA_BK0) DEBUGIO("cur_bank=0 "); else DEBUGIO("cur_bank INVALID "); if (csr & AT91C_UDP_RX_DATA_BK1) DEBUGIO("BANK1 "); if (csr & AT91C_UDP_RX_DATA_BK0) DEBUGIO("BANK0 "); if (!(csr & cur_rcv_bank)) goto cont_ep2; if (upcd.ep[1].incomplete.rctx) { DEBUGIO("continue_incompl_RCTX "); rctx = upcd.ep[1].incomplete.rctx; } else { /* allocate new req_ctx */ DEBUGIO("alloc_new_RCTX "); /* whether to get a big or a small req_ctx */ if (pkt_size >= AT91C_EP_IN_SIZE) rctx = req_ctx_find_get(1, RCTX_STATE_FREE, RCTX_STATE_UDP_RCV_BUSY); else rctx = req_ctx_find_get(0, RCTX_STATE_FREE, RCTX_STATE_UDP_RCV_BUSY); if (!rctx) { /* disable interrupts for now */ pUDP->UDP_IDR = AT91C_UDP_EPINT1; DEBUGP("NO_RCTX_AVAIL! "); goto cont_ep2; } rctx->tot_len = 0; } DEBUGIO("RCTX=%u ", req_ctx_num(rctx)); if (rctx->size - rctx->tot_len < pkt_size) { DEBUGIO("RCTX too small, truncating !!!\n"); pkt_size = rctx->size - rctx->tot_len; } for (i = 0; i < pkt_size; i++) rctx->data[rctx->tot_len++] = pUDP->UDP_FDR[1]; pUDP->UDP_CSR[1] &= ~cur_rcv_bank; /* toggle current receive bank */ if (cur_rcv_bank == AT91C_UDP_RX_DATA_BK0) cur_rcv_bank = AT91C_UDP_RX_DATA_BK1; else cur_rcv_bank = AT91C_UDP_RX_DATA_BK0; upcd.cur_rcv_bank = cur_rcv_bank; DEBUGIO("rctxdump(%s) ", hexdump(rctx->data, rctx->tot_len)); /* if this is the last packet in transfer, hand rctx up the * stack */ if (pkt_size < AT91C_EP_IN_SIZE) { DEBUGIO("RCTX_rx_done "); req_ctx_set_state(rctx, RCTX_STATE_UDP_RCV_DONE); upcd.ep[1].incomplete.rctx = NULL; } else { DEBUGIO("RCTX_rx_cont "); upcd.ep[1].incomplete.rctx = rctx; } } cont_ep2: if (isr & AT91C_UDP_EPINT2) { csr = pUDP->UDP_CSR[2]; DEBUGI("EP2INT(In, CSR=0x%08x) ", csr); if (csr & AT91C_UDP_TXCOMP) { DEBUGII("ACK_TX_COMP "); /* acknowledge TX completion */ pUDP->UDP_CSR[2] &= ~AT91C_UDP_TXCOMP; while (pUDP->UDP_CSR[2] & AT91C_UDP_TXCOMP) ; /* if we already have another packet in DPR, send it */ if (atomic_dec_return(&upcd.ep[2].pkts_in_transit) == 1) pUDP->UDP_CSR[2] |= AT91C_UDP_TXPKTRDY; __udp_refill_ep(2); } } if (isr & AT91C_UDP_EPINT3) { csr = pUDP->UDP_CSR[3]; DEBUGII("EP3INT(Interrupt, CSR=0x%08x) ", csr); /* Transmit has completed, re-fill from pending rcts for EP3 */ if (csr & AT91C_UDP_TXCOMP) { pUDP->UDP_CSR[3] &= ~AT91C_UDP_TXCOMP; while (pUDP->UDP_CSR[3] & AT91C_UDP_TXCOMP) ; /* if we already have another packet in DPR, send it */ if (atomic_dec_return(&upcd.ep[3].pkts_in_transit) == 1) pUDP->UDP_CSR[3] |= AT91C_UDP_TXPKTRDY; __udp_refill_ep(3); } } if (isr & AT91C_UDP_RXSUSP) { pUDP->UDP_ICR = AT91C_UDP_RXSUSP; DEBUGI("RXSUSP "); /* FIXME: implement suspend/resume */ } if (isr & AT91C_UDP_RXRSM) { pUDP->UDP_ICR = AT91C_UDP_RXRSM; DEBUGI("RXRSM "); /* FIXME: implement suspend/resume */ } if (isr & AT91C_UDP_EXTRSM) { pUDP->UDP_ICR = AT91C_UDP_EXTRSM; DEBUGI("EXTRSM "); /* FIXME: implement suspend/resume */ } if (isr & AT91C_UDP_SOFINT) { pUDP->UDP_ICR = AT91C_UDP_SOFINT; DEBUGI("SOFINT "); } if (isr & AT91C_UDP_WAKEUP) { pUDP->UDP_ICR = AT91C_UDP_WAKEUP; DEBUGI("WAKEUP "); /* FIXME: implement suspend/resume */ } out: DEBUGI("END\r\n"); AT91F_AIC_ClearIt(AT91C_BASE_AIC, AT91C_ID_UDP); } /* Open USB Device Port */ void udp_open(void) { DEBUGPCRF("entering"); udp_init(); upcd.pUdp = AT91C_BASE_UDP; upcd.cur_config = 0; upcd.cur_rcv_bank = AT91C_UDP_RX_DATA_BK0; AT91F_AIC_ConfigureIt(AT91C_BASE_AIC, AT91C_ID_UDP, OPENPCD_IRQ_PRIO_UDP, AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL, udp_irq); AT91F_AIC_EnableIt(AT91C_BASE_AIC, AT91C_ID_UDP); /* End-of-Bus-Reset is always enabled */ /* Set the Pull up resistor */ AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPCD_PIO_UDP_PUP); } void udp_reset(void) { volatile int i; AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPCD_PIO_UDP_PUP); for (i = 0; i < 0xffff; i++) ; AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPCD_PIO_UDP_PUP); } #ifdef DEBUG_UDP_EP0 #define DEBUGE(x, args ...) DEBUGP(x, ## args) #else #define DEBUGE(x, args ...) do { } while (0) #endif /* Handle requests on the USB Control Endpoint */ static void udp_ep0_handler(void) { AT91PS_UDP pUDP = upcd.pUdp; u_int8_t bmRequestType, bRequest; u_int16_t wValue, wIndex, wLength, wStatus; u_int32_t csr = pUDP->UDP_CSR[0]; DEBUGE("CSR=0x%04x ", csr); if (csr & AT91C_UDP_STALLSENT) { DEBUGE("ACK_STALLSENT "); pUDP->UDP_CSR[0] = ~AT91C_UDP_STALLSENT; } if (csr & AT91C_UDP_RX_DATA_BK0) { DEBUGE("ACK_BANK0 "); pUDP->UDP_CSR[0] &= ~AT91C_UDP_RX_DATA_BK0; } if (!(csr & AT91C_UDP_RXSETUP)) { DEBUGE("no setup packet "); return; } DEBUGE("len=%d ", csr >> 16); if (csr >> 16 == 0) { DEBUGE("empty packet "); return; } bmRequestType = pUDP->UDP_FDR[0]; bRequest = pUDP->UDP_FDR[0]; wValue = (pUDP->UDP_FDR[0] & 0xFF); wValue |= (pUDP->UDP_FDR[0] << 8); wIndex = (pUDP->UDP_FDR[0] & 0xFF); wIndex |= (pUDP->UDP_FDR[0] << 8); wLength = (pUDP->UDP_FDR[0] & 0xFF); wLength |= (pUDP->UDP_FDR[0] << 8); DEBUGE("bmRequestType=0x%2x ", bmRequestType); if (bmRequestType & 0x80) { DEBUGE("DATA_IN=1 "); pUDP->UDP_CSR[0] |= AT91C_UDP_DIR; while (!(pUDP->UDP_CSR[0] & AT91C_UDP_DIR)) ; } pUDP->UDP_CSR[0] &= ~AT91C_UDP_RXSETUP; while ((pUDP->UDP_CSR[0] & AT91C_UDP_RXSETUP)) ; DEBUGE("dfu_state = %u ", *dfu->dfu_state); /* Handle supported standard device request Cf Table 9-3 in USB * speciication Rev 1.1 */ switch ((bRequest << 8) | bmRequestType) { case STD_GET_DESCRIPTOR: DEBUGE("GET_DESCRIPTOR "); if (wValue == 0x100) { /* Return Device Descriptor */ #ifdef CONFIG_DFU if (*dfu->dfu_state != DFU_STATE_appIDLE) udp_ep0_send_data((const char *) dfu->dfu_dev_descriptor, MIN(dfu->dfu_dev_descriptor->bLength, wLength)); else #endif udp_ep0_send_data((const char *) &dev_descriptor, MIN(sizeof(dev_descriptor), wLength)); } else if (wValue == 0x200) { /* Return Configuration Descriptor */ #ifdef CONFIG_DFU if (*dfu->dfu_state != DFU_STATE_appIDLE) udp_ep0_send_data((const char *) dfu->dfu_cfg_descriptor, MIN(dfu->dfu_cfg_descriptor->ucfg.wTotalLength, wLength)); else #endif udp_ep0_send_data((const char *) &cfg_descriptor, MIN(sizeof(cfg_descriptor), wLength)); } else if (wValue == 0x300) { /* Return String descriptor */ switch (wIndex) { case 0: udp_ep0_send_data((const char *) &string0, MIN(sizeof(string0), wLength)); break; default: /* FIXME: implement this */ udp_ep0_send_stall(); break; } } else if (wValue == 0x2100) { /* Return Function descriptor */ udp_ep0_send_data((const char *) &dfu->dfu_cfg_descriptor->func_dfu, MIN(sizeof(dfu->dfu_cfg_descriptor->func_dfu), wLength)); #if 0 } else if (wValue == 0x400) { /* Return Interface descriptor */ if (wIndex != 0x01) udp_ep0_send_stall(); udp_ep0_send_data((const char *) &dfu_if_descriptor, MIN(sizeof(dfu_if_descriptor), wLength)); #endif } else udp_ep0_send_stall(); break; case STD_SET_ADDRESS: DEBUGE("SET_ADDRESS "); udp_ep0_send_zlp(); pUDP->UDP_FADDR = (AT91C_UDP_FEN | wValue); pUDP->UDP_GLBSTATE = (wValue) ? AT91C_UDP_FADDEN : 0; break; case STD_SET_CONFIGURATION: DEBUGE("SET_CONFIG "); if (wValue) DEBUGE("VALUE!=0 "); upcd.cur_config = wValue; udp_ep0_send_zlp(); pUDP->UDP_GLBSTATE = (wValue) ? AT91C_UDP_CONFG : AT91C_UDP_FADDEN; pUDP->UDP_CSR[1] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT) : 0; pUDP->UDP_CSR[2] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN) : 0; pUDP->UDP_CSR[3] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN) : 0; pUDP->UDP_IER = (AT91C_UDP_EPINT0|AT91C_UDP_EPINT1| AT91C_UDP_EPINT2|AT91C_UDP_EPINT3); break; case STD_GET_CONFIGURATION: DEBUGE("GET_CONFIG "); udp_ep0_send_data((char *)&(upcd.cur_config), sizeof(upcd.cur_config)); break; case STD_GET_STATUS_ZERO: DEBUGE("GET_STATUS_ZERO "); wStatus = 0; udp_ep0_send_data((char *)&wStatus, sizeof(wStatus)); break; case STD_GET_STATUS_INTERFACE: DEBUGE("GET_STATUS_INTERFACE "); wStatus = 0; udp_ep0_send_data((char *)&wStatus, sizeof(wStatus)); break; case STD_GET_STATUS_ENDPOINT: DEBUGE("GET_STATUS_ENDPOINT(EPidx=%u) ", wIndex&0x0f); wStatus = 0; wIndex &= 0x0F; if ((pUDP->UDP_GLBSTATE & AT91C_UDP_CONFG) && (wIndex <= 3)) { wStatus = (pUDP->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1; udp_ep0_send_data((char *)&wStatus, sizeof(wStatus)); } else if ((pUDP->UDP_GLBSTATE & AT91C_UDP_FADDEN) && (wIndex == 0)) { wStatus = (pUDP->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1; udp_ep0_send_data((char *)&wStatus, sizeof(wStatus)); } else udp_ep0_send_stall(); break; case STD_SET_FEATURE_ZERO: DEBUGE("SET_FEATURE_ZERO "); udp_ep0_send_stall(); break; case STD_SET_FEATURE_INTERFACE: DEBUGE("SET_FEATURE_INTERFACE "); udp_ep0_send_zlp(); break; case STD_SET_FEATURE_ENDPOINT: DEBUGE("SET_FEATURE_ENDPOINT "); udp_ep0_send_zlp(); wIndex &= 0x0F; if ((wValue == 0) && wIndex && (wIndex <= 3)) { pUDP->UDP_CSR[wIndex] = 0; udp_ep0_send_zlp(); } else udp_ep0_send_stall(); break; case STD_CLEAR_FEATURE_ZERO: DEBUGE("CLEAR_FEATURE_ZERO "); udp_ep0_send_stall(); break; case STD_CLEAR_FEATURE_INTERFACE: DEBUGP("CLEAR_FEATURE_INTERFACE "); udp_ep0_send_zlp(); break; case STD_CLEAR_FEATURE_ENDPOINT: DEBUGE("CLEAR_FEATURE_ENDPOINT(EPidx=%u) ", wIndex & 0x0f); wIndex &= 0x0F; if ((wValue == 0) && wIndex && (wIndex <= 3)) { struct req_ctx *rctx; reset_ep(wIndex); udp_ep0_send_zlp(); } else udp_ep0_send_stall(); break; case STD_SET_INTERFACE: DEBUGE("SET INTERFACE "); udp_ep0_send_stall(); break; default: DEBUGE("DEFAULT(req=0x%02x, type=0x%02x) ", bRequest, bmRequestType); #ifdef CONFIG_DFU if ((bmRequestType & 0x3f) == USB_TYPE_DFU) { dfu->dfu_ep0_handler(bmRequestType, bRequest, wValue, wLength); } else #endif udp_ep0_send_stall(); break; } }