/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * Copyright © 2010 Tobias Diedrich * * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include "system.h" #include "usb.h" #include "usb_drv.h" #include "as3525.h" #include "clock-target.h" #include "ascodec.h" #include "as3514.h" #include #include "panic.h" /*#define LOGF_ENABLE*/ #include "logf.h" #include "usb_ch9.h" #include "usb_core.h" #include "string.h" #include "usb-drv-as3525.h" /* OUT EP 2 is an alias for OUT EP 0 on this HW! */ struct usb_drv_ep_spec usb_drv_ep_specs[USB_NUM_EPS] = { {.type = {USB_ENDPOINT_XFER_CONTROL, USB_ENDPOINT_XFER_CONTROL}}, {.type = {USB_ENDPOINT_TYPE_ANY, USB_ENDPOINT_TYPE_ANY}}, {.type = {USB_ENDPOINT_TYPE_NONE, USB_ENDPOINT_TYPE_ANY}}, {.type = {USB_ENDPOINT_TYPE_ANY, USB_ENDPOINT_TYPE_ANY}}, }; uint8_t usb_drv_ep_specs_flags = 0; static struct usb_endpoint endpoints[USB_NUM_EPS][2]; static int got_set_configuration = 0; static int usb_enum_timeout = -1; static bool initialized = false; /* * dma/setup descriptors and buffers should avoid sharing * a cacheline with other data. * dmadescs may share with each other, since we only access them uncached. */ static struct usb_dev_dma_desc dmadescs[USB_NUM_EPS][2] __attribute__((aligned(32))); /* reuse unused EP2 OUT descriptor here */ static struct usb_dev_setup_buf *setup_desc = (void*)&dmadescs[2][1]; #if AS3525_MCLK_SEL != AS3525_CLK_PLLB static inline void usb_enable_pll(void) { CGU_COUNTB = CGU_LOCK_CNT; CGU_PLLB = AS3525_PLLB_SETTING; CGU_PLLBSUP = 0; /* enable PLLB */ while(!(CGU_INTCTRL & CGU_PLLB_LOCK)); /* wait until PLLB is locked */ } static inline void usb_disable_pll(void) { CGU_PLLBSUP = CGU_PLL_POWERDOWN; } #else static inline void usb_enable_pll(void) { } static inline void usb_disable_pll(void) { } #endif /* AS3525_MCLK_SEL != AS3525_CLK_PLLB */ void usb_attach(void) { logf("usb-drv: attach"); /* Nothing to do */ } static void usb_tick(void); static void usb_phy_on(void) { /* PHY clock */ CGU_USB = 1<<5 /* enable */ | (CLK_DIV(AS3525_PLLB_FREQ, 48000000) / 2) << 2 | 2; /* source = PLLB */ /* UVDD on */ ascodec_write(AS3515_USB_UTIL, ascodec_read(AS3515_USB_UTIL) | (1<<4)); mdelay(100); /* reset */ CCU_SRC = CCU_SRC_USB_AHB_EN|CCU_SRC_USB_PHY_EN; CCU_SRL = CCU_SRL_MAGIC_NUMBER; mdelay(1); CCU_SRC = CCU_SRC_USB_AHB_EN; mdelay(1); CCU_SRC = CCU_SRL = 0; USB_GPIO_CSR = USB_GPIO_TX_ENABLE_N | USB_GPIO_TX_BIT_STUFF_EN | USB_GPIO_XO_ON | USB_GPIO_CLK_SEL10; /* 0x06180000; */ } static void usb_phy_suspend(void) { USB_GPIO_CSR |= USB_GPIO_ASESSVLD_EXT | USB_GPIO_BSESSVLD_EXT | USB_GPIO_VBUS_VLD_EXT; mdelay(3); USB_GPIO_CSR |= USB_GPIO_VBUS_VLD_EXT_SEL; mdelay(10); } static void usb_phy_resume(void) { USB_GPIO_CSR &= ~(USB_GPIO_ASESSVLD_EXT | USB_GPIO_BSESSVLD_EXT | USB_GPIO_VBUS_VLD_EXT); mdelay(3); USB_GPIO_CSR &= ~USB_GPIO_VBUS_VLD_EXT_SEL; mdelay(10); } static void setup_desc_init(struct usb_dev_setup_buf *desc) { struct usb_dev_setup_buf *uc_desc = AS3525_UNCACHED_ADDR(desc); uc_desc->status = USB_DMA_DESC_BS_HST_RDY; uc_desc->resv = 0xffffffff; uc_desc->data1 = 0xffffffff; uc_desc->data2 = 0xffffffff; } static void dma_desc_init(int ep, int dir) { struct usb_dev_dma_desc *desc = &dmadescs[ep][dir]; struct usb_dev_dma_desc *uc_desc = AS3525_UNCACHED_ADDR(desc); endpoints[ep][dir].uc_desc = uc_desc; uc_desc->status = USB_DMA_DESC_BS_DMA_DONE | \ USB_DMA_DESC_LAST | \ USB_DMA_DESC_ZERO_LEN; uc_desc->resv = 0xffffffff; uc_desc->data_ptr = 0; uc_desc->next_desc = 0; } static void reset_endpoints(int init) { int i; for(i = 0; i < USB_NUM_EPS; i++) { /* * MPS sizes depending on speed: * LS: 8 (control), no bulk available * FS: 64 (control), 64 (bulk) * HS: 64 (control), 512 (bulk) * * We don't need to handle LS since there is no low-speed only * host AFAIK. */ int mps = i == 0 ? 64 : (usb_drv_port_speed() ? 512 : 64); if (init) { if (endpoints[i][0].state & EP_STATE_BUSY) { if (endpoints[i][0].state & EP_STATE_ASYNC) { endpoints[i][0].rc = -1; semaphore_release(&endpoints[i][0].complete); } else { usb_core_transfer_complete(i, USB_DIR_IN, -1, 0); } } endpoints[i][0].state = 0; semaphore_wait(&endpoints[i][0].complete, TIMEOUT_NOBLOCK); if (i != 2) { /* Skip the OUT EP0 alias */ if (endpoints[i][1].state & EP_STATE_BUSY) usb_core_transfer_complete(i, USB_DIR_OUT, -1, 0); endpoints[i][1].state = 0; semaphore_wait(&endpoints[i][1].complete, TIMEOUT_NOBLOCK); USB_OEP_SUP_PTR(i) = 0; } } dma_desc_init(i, 0); USB_IEP_CTRL (i) = USB_EP_CTRL_FLUSH|USB_EP_CTRL_SNAK; USB_IEP_MPS (i) = mps; /* in bytes */ /* We don't care about the 'IN token received' event */ USB_IEP_STS_MASK(i) = USB_EP_STAT_IN; /* OF: 0x840 */ USB_IEP_TXFSIZE (i) = mps/2; /* in dwords => mps*2 bytes */ USB_IEP_STS (i) = 0xffffffff; /* clear status */ USB_IEP_DESC_PTR(i) = 0; if (i != 2) { /* Skip the OUT EP0 alias */ dma_desc_init(i, 1); USB_OEP_CTRL (i) = USB_EP_CTRL_FLUSH|USB_EP_CTRL_SNAK; USB_OEP_MPS (i) = (mps/2 << 16) | mps; USB_OEP_STS_MASK(i) = USB_EP_STAT_BNA; /* OF: 0x1800 */ USB_OEP_RXFR (i) = 0; /* Always 0 in OF trace? */ USB_OEP_STS (i) = 0xffffffff; /* clear status */ USB_OEP_DESC_PTR(i) = 0; } } setup_desc_init(setup_desc); USB_OEP_SUP_PTR(0) = AS3525_PHYSICAL_ADDR((int)setup_desc); } void usb_drv_init(void) { logf("usb_drv_init() !!!!\n"); if (!initialized) { int i; for (i = 0; i < USB_NUM_EPS; i++) { semaphore_init(&endpoints[i][0].complete, 1, 0); semaphore_init(&endpoints[i][1].complete, 1, 0); } initialized = true; } usb_enable_pll(); /* we have external power, so boost cpu */ cpu_boost(1); /* length regulator: normal operation */ ascodec_write(AS3514_CVDD_DCDC3, ascodec_read(AS3514_CVDD_DCDC3) | 1<<2); /* AHB part */ bitset32(&CGU_PERI, CGU_USB_CLOCK_ENABLE); /* reset AHB */ CCU_SRC = CCU_SRC_USB_AHB_EN; CCU_SRL = CCU_SRL_MAGIC_NUMBER; mdelay(1); CCU_SRC = CCU_SRL = 0; USB_GPIO_CSR = USB_GPIO_TX_ENABLE_N | USB_GPIO_TX_BIT_STUFF_EN | USB_GPIO_XO_ON | USB_GPIO_CLK_SEL10; /* 0x06180000; */ /* bug workaround according to linux patch */ USB_DEV_CFG = (USB_DEV_CFG & ~3) | 1; /* full speed */ /* enable soft disconnect */ USB_DEV_CTRL |= USB_DEV_CTRL_SOFT_DISCONN; usb_phy_on(); usb_phy_suspend(); USB_DEV_CTRL |= USB_DEV_CTRL_SOFT_DISCONN; /* We don't care about SVC or SOF events */ /* Right now we don't handle suspend, so mask those too */ USB_DEV_INTR_MASK = USB_DEV_INTR_SVC | USB_DEV_INTR_SOF | USB_DEV_INTR_USB_SUSPEND | USB_DEV_INTR_EARLY_SUSPEND; USB_DEV_CFG = USB_DEV_CFG_STAT_ACK | USB_DEV_CFG_UNI_DIR | USB_DEV_CFG_PI_16BIT | USB_DEV_CFG_HS | USB_DEV_CFG_SELF_POWERED | USB_DEV_CFG_CSR_PRG | USB_DEV_CFG_PHY_ERR_DETECT; USB_DEV_CTRL = USB_DEV_CTRL_DESC_UPDATE | USB_DEV_CTRL_THRES_ENABLE | USB_DEV_CTRL_BURST_ENABLE | USB_DEV_CTRL_BLEN_8DWORDS | USB_DEV_CTRL_TLEN_8THMAXSIZE; USB_DEV_EP_INTR_MASK &= ~((1<<0) | (1<<16)); /* ep 0 */ reset_endpoints(1); /* clear pending interrupts */ USB_DEV_EP_INTR = 0xffffffff; USB_DEV_INTR = 0xffffffff; VIC_INT_ENABLE = INTERRUPT_USB; usb_phy_resume(); USB_DEV_CTRL &= ~USB_DEV_CTRL_SOFT_DISCONN; USB_GPIO_CSR = USB_GPIO_TX_ENABLE_N | USB_GPIO_TX_BIT_STUFF_EN | USB_GPIO_XO_ON | USB_GPIO_HS_INTR | USB_GPIO_CLK_SEL10; /* 0x06180000; */ tick_add_task(usb_tick); usb_enum_timeout = HZ; /* one second timeout for enumeration */ } void usb_drv_exit(void) { tick_remove_task(usb_tick); USB_DEV_CTRL |= (1<<10); /* soft disconnect */ usb_phy_suspend(); /* * mask all interrupts _before_ writing to VIC_INT_EN_CLEAR, * or else the core might latch the interrupt while * the write ot VIC_INT_EN_CLEAR is in the pipeline and * so cause a fake spurious interrupt. */ USB_DEV_EP_INTR_MASK = 0xffffffff; USB_DEV_INTR_MASK = 0xffffffff; VIC_INT_EN_CLEAR = INTERRUPT_USB; CGU_USB &= ~(1<<5); bitclr32(&CGU_PERI, CGU_USB_CLOCK_ENABLE); /* Disable UVDD generating LDO */ ascodec_write(AS3515_USB_UTIL, ascodec_read(AS3515_USB_UTIL) & ~(1<<4)); usb_disable_pll(); cpu_boost(0); initialized = false; logf("usb_drv_exit() !!!!\n"); } int usb_drv_port_speed(void) { return (USB_DEV_STS & USB_DEV_STS_MASK_SPD) ? 0 : 1; } void usb_drv_ep_init(const struct usb_drv_ep_alloc_ctx* ctx, int ep) { /* FIXME: support max packet size override */ const int epnum = EP_NUM(ep); const int epdir = EP_DIR(ep); const int type = ctx->type[epnum][epdir]; if (epdir == DIR_IN) { USB_IEP_CTRL(epnum) = USB_EP_CTRL_FLUSH | USB_EP_CTRL_SNAK | USB_EP_CTRL_ACT | (type << 4); USB_DEV_EP_INTR_MASK &= ~(1< USB_DMA_DESC_RXTX_BYTES) panicf("usb_recv: len=%d > %d", len, USB_DMA_DESC_RXTX_BYTES); if ((int)ptr & 31) { logf("addr %08x not aligned!\n", (int)ptr); } endpoints[ep][1].state |= EP_STATE_BUSY; endpoints[ep][1].len = len; endpoints[ep][1].rc = -1; /* remove data buffer from cache */ discard_dcache_range(ptr, len); /* DMA setup */ uc_desc->status = USB_DMA_DESC_BS_HST_RDY | USB_DMA_DESC_LAST | len; if (len == 0) { uc_desc->status |= USB_DMA_DESC_ZERO_LEN; uc_desc->data_ptr = 0; } else { uc_desc->data_ptr = AS3525_PHYSICAL_ADDR(ptr); } USB_OEP_DESC_PTR(ep) = AS3525_PHYSICAL_ADDR((int)&dmadescs[ep][1]); USB_OEP_STS(ep) = USB_EP_STAT_OUT_RCVD; /* clear status */ /* Make sure receive DMA is on */ if (!(USB_DEV_CTRL & USB_DEV_CTRL_RDE)){ USB_DEV_CTRL |= USB_DEV_CTRL_RDE; if (!(USB_DEV_CTRL & USB_DEV_CTRL_RDE)) logf("failed to enable RDE!\n"); } USB_OEP_CTRL(ep) |= USB_EP_CTRL_CNAK; /* Go! */ if (USB_OEP_CTRL(ep) & USB_EP_CTRL_NAK) { int i = 0; while (USB_OEP_CTRL(ep) & USB_EP_CTRL_NAK) { USB_OEP_CTRL(ep) |= USB_EP_CTRL_CNAK; /* Go! */ i++; } logf("ep%d CNAK needed %d retries CTRL=%x\n", ep, i, (int)USB_OEP_CTRL(ep)); } return 0; } #if defined(LOGF_ENABLE) static char hexbuf[1025]; static char hextab[16] = "0123456789abcdef"; char *make_hex(char *data, int len) { int i; if (!((int)data & 0x40000000)) data = AS3525_UNCACHED_ADDR(data); /* don't pollute the cache */ if (len > 512) len = 512; for (i=0; i> 4 ]; hexbuf[2*i+1] = hextab[(unsigned char)data[i] & 0xf]; } hexbuf[2*i] = 0; return hexbuf; } #endif static void ep_send(int ep, void *ptr, int len) { struct usb_dev_dma_desc *uc_desc = endpoints[ep][0].uc_desc; endpoints[ep][0].state |= EP_STATE_BUSY; endpoints[ep][0].len = len; endpoints[ep][0].rc = -1; /* * I'm seeing a problem where Linux sends two SETUP requests, * but fails to read the response from the first one. * We then have the response we wanted to send still in our fifo, * so flush the fifo before sending on the control endpoint. */ if (ep == 0) USB_IEP_CTRL(ep) |= USB_EP_CTRL_FLUSH; /* Make sure data is committed to memory */ commit_dcache_range(ptr, len); logf("xx%s\n", make_hex(ptr, len)); uc_desc->status = USB_DMA_DESC_BS_HST_RDY | USB_DMA_DESC_LAST | len; if (len == 0) uc_desc->status |= USB_DMA_DESC_ZERO_LEN; uc_desc->data_ptr = AS3525_PHYSICAL_ADDR(ptr); USB_IEP_DESC_PTR(ep) = AS3525_PHYSICAL_ADDR((int)&dmadescs[ep][0]); USB_IEP_STS(ep) = 0xffffffff; /* clear status */ /* start transfer */ USB_IEP_CTRL(ep) |= USB_EP_CTRL_CNAK | USB_EP_CTRL_PD; /* HW automatically sets NAK bit later */ } int usb_drv_send(int ep, void *ptr, int len) { logf("usb_drv_send(%d,%x,%d): ", ep, (int)ptr, len); ep &= 0x7f; if (ep == 0 && got_set_configuration) { got_set_configuration = 0; if (len != 0) panicf("usb_drv_send: GSC, but len!=0"); /* Tell the HW we handled the request */ USB_DEV_CTRL |= USB_DEV_CTRL_APCSR_DONE; return 0; } ep_send(ep, ptr, len); if (semaphore_wait(&endpoints[ep][0].complete, HZ) == OBJ_WAIT_TIMEDOUT) logf("send timed out!\n"); return endpoints[ep][0].rc; } int usb_drv_send_nonblocking(int ep, void *ptr, int len) { logf("usb_drv_send_nonblocking(%d,%x,%d): ", ep, (int)ptr, len); ep &= 0x7f; endpoints[ep][0].state |= EP_STATE_ASYNC; ep_send(ep, ptr, len); return 0; } static void handle_in_ep(int ep) { int ep_sts = USB_IEP_STS(ep) & ~USB_IEP_STS_MASK(ep); if (ep > 3) panicf("in_ep > 3?!"); USB_IEP_STS(ep) = ep_sts; /* ack */ if (ep_sts & USB_EP_STAT_BNA) { /* Buffer was not set up */ int ctrl = USB_IEP_CTRL(ep); logf("ep%d IN, status %x ctrl %x (BNA)\n", ep, ep_sts, ctrl); panicf("ep%d IN 0x%x 0x%x (BNA)", ep, ep_sts, ctrl); } if (ep_sts & USB_EP_STAT_TDC) { endpoints[ep][0].state &= ~EP_STATE_BUSY; endpoints[ep][0].rc = 0; logf("EP%d %x %stx done len %x stat %08x\n", ep, ep_sts, endpoints[ep][0].state & EP_STATE_ASYNC ? "async " :"", endpoints[ep][0].len, endpoints[ep][0].uc_desc->status); if (endpoints[ep][0].state & EP_STATE_ASYNC) { endpoints[ep][0].state &= ~EP_STATE_ASYNC; usb_core_transfer_complete(ep, USB_DIR_IN, 0, endpoints[ep][0].len); } else { semaphore_release(&endpoints[ep][0].complete); } ep_sts &= ~USB_EP_STAT_TDC; } if (ep_sts) { logf("ep%d IN, hwstat %lx, epstat %x\n", ep, USB_IEP_STS(ep), endpoints[ep][0].state); panicf("ep%d IN 0x%x", ep, ep_sts); } } static void handle_out_ep(int ep) { struct usb_ctrlrequest *req = (void*)AS3525_UNCACHED_ADDR(&setup_desc->data1); int ep_sts = USB_OEP_STS(ep) & ~USB_OEP_STS_MASK(ep); if (ep > 3) panicf("out_ep > 3!?"); USB_OEP_STS(ep) = ep_sts; /* ACK */ if (ep_sts & USB_EP_STAT_BNA) { /* Buffer was not set up */ int ctrl = USB_OEP_CTRL(ep); logf("ep%d OUT, status %x ctrl %x (BNA)\n", ep, ep_sts, ctrl); panicf("ep%d OUT 0x%x 0x%x (BNA)", ep, ep_sts, ctrl); ep_sts &= ~USB_EP_STAT_BNA; } if (ep_sts & USB_EP_STAT_OUT_RCVD) { struct usb_dev_dma_desc *uc_desc = endpoints[ep][1].uc_desc; int dma_sts = uc_desc->status; int dma_len = dma_sts & 0xffff; if (!(dma_sts & USB_DMA_DESC_ZERO_LEN)) { logf("EP%d OUT token, st:%08x len:%d frm:%x data=%s epstate=%d\n", ep, dma_sts & 0xf8000000, dma_len, (dma_sts >> 16) & 0x7ff, make_hex(uc_desc->data_ptr, dma_len), endpoints[ep][1].state); /* * If parts of the just dmaed range are in cache, dump them now. */ discard_dcache_range(uc_desc->data_ptr, dma_len); } else{ logf("EP%d OUT token, st:%08x frm:%x (no data)\n", ep, dma_sts & 0xf8000000, (dma_sts >> 16) & 0x7ff); } if (endpoints[ep][1].state & EP_STATE_BUSY) { endpoints[ep][1].state &= ~EP_STATE_BUSY; endpoints[ep][1].rc = 0; usb_core_transfer_complete(ep, USB_DIR_OUT, 0, dma_len); } else { logf("EP%d OUT, but no one was listening?\n", ep); } USB_OEP_CTRL(ep) |= USB_EP_CTRL_SNAK; /* make sure NAK is set */ ep_sts &= ~USB_EP_STAT_OUT_RCVD; } if (ep_sts & USB_EP_STAT_SETUP_RCVD) { static struct usb_ctrlrequest req_copy; req_copy = *req; logf("t%ld:got SETUP packet: %s type=%d req=%d val=%d ind=%d len=%d\n", current_tick, make_hex((void*)req, 8), req->bRequestType, req->bRequest, req->wValue, req->wIndex, req->wLength); usb_core_setup_received(&req_copy); setup_desc_init(setup_desc); ep_sts &= ~USB_EP_STAT_SETUP_RCVD; } if (ep_sts) { logf("ep%d OUT, status %x\n", ep, ep_sts); panicf("ep%d OUT 0x%x", ep, ep_sts); } } /* * This is a simplified version of the timer based RDE enable from * the Linux amd5536udc.c driver. * We need this because of the following hw issue: * The usb_storage buffer is 63KB, but Linux sends 120KB. * We get the first part, but upon re-enabling receive dma we * get a 'buffer not available' error from the hardware, since * we haven't gotten the next usb_drv_recv_nonblocking() from * the stack yet. * It seems the NAK bit is ignored here and the HW tries to dma * the incoming data anyway. * In theory I think the BNA error should be recoverable, but * I haven't figured out how to do that yet and this approach seems * to work for now. */ static void usb_tick(void) { static int rde_timer = 0; static int rde_fails = 0; if (usb_enum_timeout != -1) { /* * If the enum times out it's a charger, drop out of usb mode. */ if (usb_enum_timeout-- <= 0) usb_remove_int(); } if (USB_DEV_CTRL & USB_DEV_CTRL_RDE) return; if (!(USB_DEV_STS & USB_DEV_STS_RXF_EMPTY)) rde_timer++; if (rde_timer < 2) return; logf("usb_tick: re-enabling RDE\n"); USB_DEV_CTRL |= USB_DEV_CTRL_RDE; rde_timer = 0; if (USB_DEV_CTRL & USB_DEV_CTRL_RDE) { rde_fails = 0; } else { rde_fails++; if (rde_fails > 3) panicf("usb_tick: failed to set RDE"); } } /* interrupt service routine */ void INT_USB_FUNC(void) { int ep = USB_DEV_EP_INTR & ~USB_DEV_EP_INTR_MASK; int intr = USB_DEV_INTR & ~USB_DEV_INTR_MASK; /* ACK interrupt sources */ USB_DEV_EP_INTR = ep; USB_DEV_INTR = intr; /* Handle endpoint interrupts */ while (ep) { int onebit = 31-__builtin_clz(ep); if (onebit < 16) handle_in_ep(onebit); else handle_out_ep(onebit-16); ep &= ~(1 << onebit); } /* Handle general device interrupts */ if (intr) { if (intr & USB_DEV_INTR_SET_INTERFACE) {/* SET_INTERFACE received */ logf("set interface\n"); panicf("set interface"); intr &= ~USB_DEV_INTR_SET_INTERFACE; } if (intr & USB_DEV_INTR_SET_CONFIG) {/* SET_CONFIGURATION received */ /* * This is handled in HW, we have to fake a request here * for usb_core. */ static struct usb_ctrlrequest set_config = { bRequestType: USB_TYPE_STANDARD | USB_RECIP_DEVICE, bRequest: USB_REQ_SET_CONFIGURATION, wValue: 0, wIndex: 0, wLength: 0, }; logf("set config\n"); got_set_configuration = 1; set_config.wValue = USB_DEV_STS & USB_DEV_STS_MASK_CFG; usb_core_setup_received(&set_config); intr &= ~USB_DEV_INTR_SET_CONFIG; } if (intr & USB_DEV_INTR_EARLY_SUSPEND) {/* idle >3ms detected */ logf("usb idle\n"); intr &= ~USB_DEV_INTR_EARLY_SUSPEND; } if (intr & USB_DEV_INTR_USB_RESET) {/* usb reset from host? */ logf("usb reset\n"); reset_endpoints(1); usb_core_bus_reset(); intr &= ~USB_DEV_INTR_USB_RESET; } if (intr & USB_DEV_INTR_USB_SUSPEND) {/* suspend req from host? */ logf("usb suspend\n"); intr &= ~USB_DEV_INTR_USB_SUSPEND; } if (intr & USB_DEV_INTR_SOF) {/* sof received */ logf("sof\n"); intr &= ~USB_DEV_INTR_SOF; } if (intr & USB_DEV_INTR_SVC) {/* device status changed */ logf("svc: %08x otg: %08x\n", (int)USB_DEV_STS, (int)USB_OTG_CSR); intr &= ~USB_DEV_INTR_SVC; } if (intr & USB_DEV_INTR_ENUM_DONE) {/* speed enumeration complete */ int spd = USB_DEV_STS & USB_DEV_STS_MASK_SPD; /* Enumerated Speed */ usb_enum_timeout = -1; logf("speed enum complete: "); if (spd == USB_DEV_STS_SPD_HS) logf("hs\n"); if (spd == USB_DEV_STS_SPD_FS) logf("fs\n"); if (spd == USB_DEV_STS_SPD_LS) logf("ls\n"); USB_DEV_CTRL |= USB_DEV_CTRL_APCSR_DONE; USB_IEP_CTRL(0) |= USB_EP_CTRL_ACT; USB_OEP_CTRL(0) |= USB_EP_CTRL_ACT; intr &= ~USB_DEV_INTR_ENUM_DONE; } if (intr & USB_DEV_INTR_MYSTERY) { logf("got mystery dev intr\n"); USB_DEV_INTR_MASK |= USB_DEV_INTR_MYSTERY; intr &= ~USB_DEV_INTR_MYSTERY; } if (intr) { logf("usb devirq 0x%x", intr); panicf("usb devirq 0x%x", intr); } } } /* (not essential? , not implemented in usb-tcc.c) */ void usb_drv_set_test_mode(int mode) { (void)mode; } /* handled internally by controller */ void usb_drv_set_address(int address) { (void)address; } void usb_drv_stall(int ep, bool stall, bool in) { if (stall) USB_EP_CTRL(ep, in) |= USB_EP_CTRL_STALL; else USB_EP_CTRL(ep, in) &= ~USB_EP_CTRL_STALL; } bool usb_drv_stalled(int ep, bool in) { return USB_EP_CTRL(ep, in) & USB_EP_CTRL_STALL; }