static int ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer, int length, struct devrequest *req) { struct QH *qh; struct qTD *td; volatile struct qTD *vtd; unsigned long ts; uint32_t *tdp; uint32_t endpt, token, usbsts; uint32_t c, toggle; uint32_t cmd; int timeout; int ret = 0; debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe, buffer, length, req); if (req != NULL) debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u\n", req->request, req->request, req->requesttype, req->requesttype, le16_to_cpu(req->value), le16_to_cpu(req->value), le16_to_cpu(req->index)); qh = ehci_alloc(sizeof(struct QH), 32); if (qh == NULL) { debug("unable to allocate QH\n"); return -1; } qh->qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH); c = (usb_pipespeed(pipe) != USB_SPEED_HIGH && usb_pipeendpoint(pipe) == 0) ? 1 : 0; endpt = (8 << 28) | (c << 27) | (usb_maxpacket(dev, pipe) << 16) | (0 << 15) | (1 << 14) | (usb_pipespeed(pipe) << 12) | (usb_pipeendpoint(pipe) << 8) | (0 << 7) | (usb_pipedevice(pipe) << 0); qh->qh_endpt1 = cpu_to_hc32(endpt); endpt = (1 << 30) | (dev->portnr << 23) | (dev->parent->devnum << 16) | (0 << 8) | (0 << 0); qh->qh_endpt2 = cpu_to_hc32(endpt); qh->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); td = NULL; tdp = &qh->qh_overlay.qt_next; toggle = usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)); if (req != NULL) { td = ehci_alloc(sizeof(struct qTD), 32); if (td == NULL) { debug("unable to allocate SETUP td\n"); goto fail; } td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); td->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); token = (0 << 31) | (sizeof(*req) << 16) | (0 << 15) | (0 << 12) | (3 << 10) | (2 << 8) | (0x80 << 0); td->qt_token = cpu_to_hc32(token); if (ehci_td_buffer(td, req, sizeof(*req)) != 0) { debug("unable construct SETUP td\n"); ehci_free(td, sizeof(*td)); goto fail; } *tdp = cpu_to_hc32((uint32_t) td); tdp = &td->qt_next; toggle = 1; } if (length > 0 || req == NULL) { td = ehci_alloc(sizeof(struct qTD), 32); if (td == NULL) { debug("unable to allocate DATA td\n"); goto fail; } td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); td->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); token = (toggle << 31) | (length << 16) | ((req == NULL ? 1 : 0) << 15) | (0 << 12) | (3 << 10) | ((usb_pipein(pipe) ? 1 : 0) << 8) | (0x80 << 0); td->qt_token = cpu_to_hc32(token); if (ehci_td_buffer(td, buffer, length) != 0) { debug("unable construct DATA td\n"); ehci_free(td, sizeof(*td)); goto fail; } *tdp = cpu_to_hc32((uint32_t) td); tdp = &td->qt_next; } if (req != NULL) { td = ehci_alloc(sizeof(struct qTD), 32); if (td == NULL) { debug("unable to allocate ACK td\n"); goto fail; } td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); td->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); token = (toggle << 31) | (0 << 16) | (1 << 15) | (0 << 12) | (3 << 10) | ((usb_pipein(pipe) ? 0 : 1) << 8) | (0x80 << 0); td->qt_token = cpu_to_hc32(token); *tdp = cpu_to_hc32((uint32_t) td); tdp = &td->qt_next; } qh_list.qh_link = cpu_to_hc32((uint32_t) qh | QH_LINK_TYPE_QH); /* Flush dcache */ ehci_flush_dcache(&qh_list); usbsts = ehci_readl(&hcor->or_usbsts); ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f)); /* Enable async. schedule. */ cmd = ehci_readl(&hcor->or_usbcmd); cmd |= CMD_ASE; ehci_writel(&hcor->or_usbcmd, cmd); ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, STD_ASS, 100 * 1000); if (ret < 0) { printf("EHCI fail timeout STD_ASS set\n"); goto fail; } /* Wait for TDs to be processed. */ ts = get_timer(0); vtd = td; timeout = USB_TIMEOUT_MS(pipe); do { /* Invalidate dcache */ ehci_invalidate_dcache(&qh_list); token = hc32_to_cpu(vtd->qt_token); if (!(token & 0x80)) break; WATCHDOG_RESET(); } while (get_timer(ts) < timeout); /* Check that the TD processing happened */ if (token & 0x80) { printf("EHCI timed out on TD - token=%#x\n", token); goto fail; } /* Disable async schedule. */ cmd = ehci_readl(&hcor->or_usbcmd); cmd &= ~CMD_ASE; ehci_writel(&hcor->or_usbcmd, cmd); ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, 0, 100 * 1000); if (ret < 0) { printf("EHCI fail timeout STD_ASS reset\n"); goto fail; } qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH); token = hc32_to_cpu(qh->qh_overlay.qt_token); if (!(token & 0x80)) { debug("TOKEN=%#x\n", token); switch (token & 0xfc) { case 0: toggle = token >> 31; usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), toggle); dev->status = 0; break; case 0x40: dev->status = USB_ST_STALLED; break; case 0xa0: case 0x20: dev->status = USB_ST_BUF_ERR; break; case 0x50: case 0x10: dev->status = USB_ST_BABBLE_DET; break; default: dev->status = USB_ST_CRC_ERR; if ((token & 0x40) == 0x40) dev->status |= USB_ST_STALLED; break; } dev->act_len = length - ((token >> 16) & 0x7fff); } else {
static int ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer, int length, struct devrequest *req) { static struct QH qh __attribute__((aligned(32))); static struct qTD qtd[3] __attribute__((aligned (32))); int qtd_counter = 0; volatile struct qTD *vtd; unsigned long ts; uint32_t *tdp; uint32_t endpt, token, usbsts; uint32_t c, toggle; uint32_t cmd; int timeout; int ret = 0; debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe, buffer, length, req); if (req != NULL) debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u\n", req->request, req->request, req->requesttype, req->requesttype, le16_to_cpu(req->value), le16_to_cpu(req->value), le16_to_cpu(req->index)); memset(&qh, 0, sizeof(struct QH)); memset(qtd, 0, sizeof(qtd)); toggle = usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)); /* * Setup QH (3.6 in ehci-r10.pdf) * * qh_link ................. 03-00 H * qh_endpt1 ............... 07-04 H * qh_endpt2 ............... 0B-08 H * - qh_curtd * qh_overlay.qt_next ...... 13-10 H * - qh_overlay.qt_altnext */ qh.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH); c = (usb_pipespeed(pipe) != USB_SPEED_HIGH && usb_pipeendpoint(pipe) == 0) ? 1 : 0; endpt = (8 << 28) | (c << 27) | (usb_maxpacket(dev, pipe) << 16) | (0 << 15) | (1 << 14) | (usb_pipespeed(pipe) << 12) | (usb_pipeendpoint(pipe) << 8) | (0 << 7) | (usb_pipedevice(pipe) << 0); qh.qh_endpt1 = cpu_to_hc32(endpt); endpt = (1 << 30) | (dev->portnr << 23) | (dev->parent->devnum << 16) | (0 << 8) | (0 << 0); qh.qh_endpt2 = cpu_to_hc32(endpt); qh.qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); tdp = &qh.qh_overlay.qt_next; if (req != NULL) { /* * Setup request qTD (3.5 in ehci-r10.pdf) * * qt_next ................ 03-00 H * qt_altnext ............. 07-04 H * qt_token ............... 0B-08 H * * [ buffer, buffer_hi ] loaded with "req". */ qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); token = (0 << 31) | (sizeof(*req) << 16) | (0 << 15) | (0 << 12) | (3 << 10) | (2 << 8) | (0x80 << 0); qtd[qtd_counter].qt_token = cpu_to_hc32(token); if (ehci_td_buffer(&qtd[qtd_counter], req, sizeof(*req)) != 0) { debug("unable construct SETUP td\n"); goto fail; } /* Update previous qTD! */ *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]); tdp = &qtd[qtd_counter++].qt_next; toggle = 1; } if (length > 0 || req == NULL) { /* * Setup request qTD (3.5 in ehci-r10.pdf) * * qt_next ................ 03-00 H * qt_altnext ............. 07-04 H * qt_token ............... 0B-08 H * * [ buffer, buffer_hi ] loaded with "buffer". */ qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); token = (toggle << 31) | (length << 16) | ((req == NULL ? 1 : 0) << 15) | (0 << 12) | (3 << 10) | ((usb_pipein(pipe) ? 1 : 0) << 8) | (0x80 << 0); qtd[qtd_counter].qt_token = cpu_to_hc32(token); if (ehci_td_buffer(&qtd[qtd_counter], buffer, length) != 0) { debug("unable construct DATA td\n"); goto fail; } /* Update previous qTD! */ *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]); tdp = &qtd[qtd_counter++].qt_next; } if (req != NULL) { /* * Setup request qTD (3.5 in ehci-r10.pdf) * * qt_next ................ 03-00 H * qt_altnext ............. 07-04 H * qt_token ............... 0B-08 H */ qtd[qtd_counter].qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); qtd[qtd_counter].qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); token = (toggle << 31) | (0 << 16) | (1 << 15) | (0 << 12) | (3 << 10) | ((usb_pipein(pipe) ? 0 : 1) << 8) | (0x80 << 0); qtd[qtd_counter].qt_token = cpu_to_hc32(token); /* Update previous qTD! */ *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]); tdp = &qtd[qtd_counter++].qt_next; } qh_list.qh_link = cpu_to_hc32((uint32_t)&qh | QH_LINK_TYPE_QH); /* Flush dcache */ flush_dcache_range((uint32_t)&qh_list, (uint32_t)&qh_list + sizeof(struct QH)); flush_dcache_range((uint32_t)&qh, (uint32_t)&qh + sizeof(struct QH)); flush_dcache_range((uint32_t)qtd, (uint32_t)qtd + sizeof(qtd)); usbsts = ehci_readl(&hcor->or_usbsts); ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f)); /* Enable async. schedule. */ cmd = ehci_readl(&hcor->or_usbcmd); cmd |= CMD_ASE; ehci_writel(&hcor->or_usbcmd, cmd); ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, STD_ASS, 100 * 1000); if (ret < 0) { printf("EHCI fail timeout STD_ASS set\n"); goto fail; } /* Wait for TDs to be processed. */ ts = get_timer(0); vtd = &qtd[qtd_counter - 1]; timeout = USB_TIMEOUT_MS(pipe); do { /* Invalidate dcache */ invalidate_dcache_range((uint32_t)&qh_list, (uint32_t)&qh_list + sizeof(struct QH)); invalidate_dcache_range((uint32_t)&qh, (uint32_t)&qh + sizeof(struct QH)); invalidate_dcache_range((uint32_t)qtd, (uint32_t)qtd + sizeof(qtd)); token = hc32_to_cpu(vtd->qt_token); if (!(token & 0x80)) break; WATCHDOG_RESET(); } while (get_timer(ts) < timeout); /* Invalidate the memory area occupied by buffer */ invalidate_dcache_range(((uint32_t)buffer & ~31), ((uint32_t)buffer & ~31) + roundup(length, 32)); /* Check that the TD processing happened */ if (token & 0x80) { printf("EHCI timed out on TD - token=%#x\n", token); } /* Disable async schedule. */ cmd = ehci_readl(&hcor->or_usbcmd); cmd &= ~CMD_ASE; ehci_writel(&hcor->or_usbcmd, cmd); ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, 0, 100 * 1000); if (ret < 0) { printf("EHCI fail timeout STD_ASS reset\n"); goto fail; } qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH); token = hc32_to_cpu(qh.qh_overlay.qt_token); if (!(token & 0x80)) { debug("TOKEN=%#x\n", token); switch (token & 0xfc) { case 0: toggle = token >> 31; usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), toggle); dev->status = 0; break; case 0x40: dev->status = USB_ST_STALLED; break; case 0xa0: case 0x20: dev->status = USB_ST_BUF_ERR; break; case 0x50: case 0x10: dev->status = USB_ST_BABBLE_DET; break; default: dev->status = USB_ST_CRC_ERR; if ((token & 0x40) == 0x40) dev->status |= USB_ST_STALLED; break; } dev->act_len = length - ((token >> 16) & 0x7fff); } else {