X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=drivers%2Fusb%2Fhost%2Fehci-hcd.c;h=7f98a6354ac4227515cb412f8ed5abde3ed63cdb;hb=612404c28a64a6df300642a1550a65dcc8e01f82;hp=3f7bc2cef6ba1c96a1563b9c295f59263d0069f9;hpb=b2eb7d9bc6032e16b7dd898f7c0ea654f63b61db;p=karo-tx-uboot.git diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 3f7bc2cef6..7f98a6354a 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -22,23 +22,28 @@ */ #include #include +#include #include #include #include #include -#ifdef CONFIG_USB_KEYBOARD -#include -extern unsigned char new[]; -#endif #include "ehci.h" -int rootdev; -struct ehci_hccr *hccr; /* R/O registers, not need for volatile */ -volatile struct ehci_hcor *hcor; +#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT +#define CONFIG_USB_MAX_CONTROLLER_COUNT 1 +#endif + +static struct ehci_ctrl { + struct ehci_hccr *hccr; /* R/O registers, not need for volatile */ + struct ehci_hcor *hcor; + int rootdev; + uint16_t portreset; + struct QH qh_list __attribute__((aligned(USB_DMA_MINALIGN))); +} ehcic[CONFIG_USB_MAX_CONTROLLER_COUNT]; -static uint16_t portreset; -static struct QH qh_list __attribute__((aligned(32))); +#define ALIGN_END_ADDR(type, ptr, size) \ + ((uint32_t)(ptr) + roundup((size) * sizeof(type), USB_DMA_MINALIGN)) static struct descriptor { struct usb_hub_descriptor hub; @@ -112,99 +117,6 @@ static struct descriptor { #define ehci_is_TDI() (0) #endif -#if defined(CONFIG_EHCI_DCACHE) -/* - * Routines to handle (flush/invalidate) the dcache for the QH and qTD - * structures and data buffers. This is needed on platforms using this - * EHCI support with dcache enabled. - */ -static void flush_invalidate(u32 addr, int size, int flush) -{ - if (flush) - flush_dcache_range(addr, addr + size); - else - invalidate_dcache_range(addr, addr + size); -} - -static void cache_qtd(struct qTD *qtd, int flush) -{ - u32 *ptr = (u32 *)qtd->qt_buffer[0]; - int len = (qtd->qt_token & 0x7fff0000) >> 16; - - flush_invalidate((u32)qtd, sizeof(struct qTD), flush); - if (ptr && len) - flush_invalidate((u32)ptr, len, flush); -} - - -static inline struct QH *qh_addr(struct QH *qh) -{ - return (struct QH *)((u32)qh & 0xffffffe0); -} - -static void cache_qh(struct QH *qh, int flush) -{ - struct qTD *qtd; - struct qTD *next; - static struct qTD *first_qtd; - - /* - * Walk the QH list and flush/invalidate all entries - */ - while (1) { - flush_invalidate((u32)qh_addr(qh), sizeof(struct QH), flush); - if ((u32)qh & QH_LINK_TYPE_QH) - break; - qh = qh_addr(qh); - qh = (struct QH *)qh->qh_link; - } - qh = qh_addr(qh); - - /* - * Save first qTD pointer, needed for invalidating pass on this QH - */ - if (flush) - first_qtd = qtd = (struct qTD *)(*(u32 *)&qh->qh_overlay & - 0xffffffe0); - else - qtd = first_qtd; - - /* - * Walk the qTD list and flush/invalidate all entries - */ - while (1) { - if (qtd == NULL) - break; - cache_qtd(qtd, flush); - next = (struct qTD *)((u32)qtd->qt_next & 0xffffffe0); - if (next == qtd) - break; - qtd = next; - } -} - -static inline void ehci_flush_dcache(struct QH *qh) -{ - cache_qh(qh, 1); -} - -static inline void ehci_invalidate_dcache(struct QH *qh) -{ - cache_qh(qh, 0); -} -#else /* CONFIG_EHCI_DCACHE */ -/* - * - */ -static inline void ehci_flush_dcache(struct QH *qh) -{ -} - -static inline void ehci_invalidate_dcache(struct QH *qh) -{ -} -#endif /* CONFIG_EHCI_DCACHE */ - void __ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg) { mdelay(50); @@ -229,29 +141,25 @@ static int handshake(uint32_t *ptr, uint32_t mask, uint32_t done, int usec) return -1; } -static void ehci_free(void *p, size_t sz) -{ - -} - -static int ehci_reset(void) +static int ehci_reset(int index) { uint32_t cmd; uint32_t tmp; uint32_t *reg_ptr; int ret = 0; - cmd = ehci_readl(&hcor->or_usbcmd); + cmd = ehci_readl(&ehcic[index].hcor->or_usbcmd); cmd = (cmd & ~CMD_RUN) | CMD_RESET; - ehci_writel(&hcor->or_usbcmd, cmd); - ret = handshake((uint32_t *)&hcor->or_usbcmd, CMD_RESET, 0, 250 * 1000); + ehci_writel(&ehcic[index].hcor->or_usbcmd, cmd); + ret = handshake((uint32_t *)&ehcic[index].hcor->or_usbcmd, + CMD_RESET, 0, 250 * 1000); if (ret < 0) { printf("EHCI fail to reset\n"); goto out; } if (ehci_is_TDI()) { - reg_ptr = (uint32_t *)((u8 *)hcor + USBMODE); + reg_ptr = (uint32_t *)((u8 *)ehcic[index].hcor + USBMODE); tmp = ehci_readl(reg_ptr); tmp |= USBMODE_CM_HC; #if defined(CONFIG_EHCI_MMIO_BIG_ENDIAN) @@ -259,50 +167,33 @@ static int ehci_reset(void) #endif ehci_writel(reg_ptr, tmp); } + +#ifdef CONFIG_USB_EHCI_TXFIFO_THRESH + cmd = ehci_readl(&ehcic[index].hcor->or_txfilltuning); + cmd &= ~TXFIFO_THRESH_MASK; + cmd |= TXFIFO_THRESH(CONFIG_USB_EHCI_TXFIFO_THRESH); + ehci_writel(&ehcic[index].hcor->or_txfilltuning, cmd); +#endif out: return ret; } -static void *ehci_alloc(size_t sz, size_t align) -{ - static struct QH qh __attribute__((aligned(32))); - static struct qTD td[3] __attribute__((aligned (32))); - static int ntds; - void *p; - - switch (sz) { - case sizeof(struct QH): - p = &qh; - ntds = 0; - break; - case sizeof(struct qTD): - if (ntds == 3) { - debug("out of TDs\n"); - return NULL; - } - p = &td[ntds]; - ntds++; - break; - default: - debug("unknown allocation size\n"); - return NULL; - } - - memset(p, 0, sz); - return p; -} - static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz) { - uint32_t addr, delta, next; + uint32_t delta, next; + uint32_t addr = (uint32_t)buf; int idx; - addr = (uint32_t) buf; + if (addr != ALIGN(addr, ARCH_DMA_MINALIGN)) + debug("EHCI-HCD: Misaligned buffer address (%p)\n", buf); + + flush_dcache_range(addr, ALIGN(addr + sz, ARCH_DMA_MINALIGN)); + idx = 0; - while (idx < 5) { + while (idx < QT_BUFFER_CNT) { td->qt_buffer[idx] = cpu_to_hc32(addr); td->qt_buffer_hi[idx] = 0; - next = (addr + 4096) & ~4095; + next = (addr + EHCI_PAGE_SIZE) & ~(EHCI_PAGE_SIZE - 1); delta = next - addr; if (delta >= sz) break; @@ -311,28 +202,43 @@ static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz) idx++; } - if (idx == 5) { - debug("out of buffer pointers (%u bytes left)\n", sz); + if (idx == QT_BUFFER_CNT) { + printf("out of buffer pointers (%u bytes left)\n", sz); return -1; } return 0; } +static inline u8 ehci_encode_speed(enum usb_device_speed speed) +{ + #define QH_HIGH_SPEED 2 + #define QH_FULL_SPEED 0 + #define QH_LOW_SPEED 1 + if (speed == USB_SPEED_HIGH) + return QH_HIGH_SPEED; + if (speed == USB_SPEED_LOW) + return QH_LOW_SPEED; + return QH_FULL_SPEED; +} + 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; + ALLOC_ALIGN_BUFFER(struct QH, qh, 1, USB_DMA_MINALIGN); + struct qTD *qtd; + int qtd_count = 0; + int qtd_counter = 0; volatile struct qTD *vtd; unsigned long ts; uint32_t *tdp; - uint32_t endpt, token, usbsts; + uint32_t endpt, maxpacket, token, usbsts; uint32_t c, toggle; uint32_t cmd; int timeout; int ret = 0; + struct ehci_ctrl *ctrl = dev->controller; debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe, buffer, length, req); @@ -343,198 +249,336 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer, 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"); +#define PKT_ALIGN 512 + /* + * The USB transfer is split into qTD transfers. Eeach qTD transfer is + * described by a transfer descriptor (the qTD). The qTDs form a linked + * list with a queue head (QH). + * + * Each qTD transfer starts with a new USB packet, i.e. a packet cannot + * have its beginning in a qTD transfer and its end in the following + * one, so the qTD transfer lengths have to be chosen accordingly. + * + * Each qTD transfer uses up to QT_BUFFER_CNT data buffers, mapped to + * single pages. The first data buffer can start at any offset within a + * page (not considering the cache-line alignment issues), while the + * following buffers must be page-aligned. There is no alignment + * constraint on the size of a qTD transfer. + */ + if (req != NULL) + /* 1 qTD will be needed for SETUP, and 1 for ACK. */ + qtd_count += 1 + 1; + if (length > 0 || req == NULL) { + /* + * Determine the qTD transfer size that will be used for the + * data payload (not considering the first qTD transfer, which + * may be longer or shorter, and the final one, which may be + * shorter). + * + * In order to keep each packet within a qTD transfer, the qTD + * transfer size is aligned to PKT_ALIGN, which is a multiple of + * wMaxPacketSize (except in some cases for interrupt transfers, + * see comment in submit_int_msg()). + * + * By default, i.e. if the input buffer is aligned to PKT_ALIGN, + * QT_BUFFER_CNT full pages will be used. + */ + int xfr_sz = QT_BUFFER_CNT; + /* + * However, if the input buffer is not aligned to PKT_ALIGN, the + * qTD transfer size will be one page shorter, and the first qTD + * data buffer of each transfer will be page-unaligned. + */ + if ((uint32_t)buffer & (PKT_ALIGN - 1)) + xfr_sz--; + /* Convert the qTD transfer size to bytes. */ + xfr_sz *= EHCI_PAGE_SIZE; + /* + * Approximate by excess the number of qTDs that will be + * required for the data payload. The exact formula is way more + * complicated and saves at most 2 qTDs, i.e. a total of 128 + * bytes. + */ + qtd_count += 2 + length / xfr_sz; + } +/* + * Threshold value based on the worst-case total size of the allocated qTDs for + * a mass-storage transfer of 65535 blocks of 512 bytes. + */ +#if CONFIG_SYS_MALLOC_LEN <= 64 + 128 * 1024 +#warning CONFIG_SYS_MALLOC_LEN may be too small for EHCI +#endif + qtd = memalign(USB_DMA_MINALIGN, qtd_count * sizeof(struct qTD)); + if (qtd == NULL) { + printf("unable to allocate TDs\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); + + memset(qh, 0, sizeof(struct QH)); + memset(qtd, 0, qtd_count * 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)&ctrl->qh_list | QH_LINK_TYPE_QH); + c = (dev->speed != USB_SPEED_HIGH) && !usb_pipeendpoint(pipe); + maxpacket = usb_maxpacket(dev, pipe); + endpt = QH_ENDPT1_RL(8) | QH_ENDPT1_C(c) | + QH_ENDPT1_MAXPKTLEN(maxpacket) | QH_ENDPT1_H(0) | + QH_ENDPT1_DTC(QH_ENDPT1_DTC_DT_FROM_QTD) | + QH_ENDPT1_EPS(ehci_encode_speed(dev->speed)) | + QH_ENDPT1_ENDPT(usb_pipeendpoint(pipe)) | QH_ENDPT1_I(0) | + QH_ENDPT1_DEVADDR(usb_pipedevice(pipe)); qh->qh_endpt1 = cpu_to_hc32(endpt); - endpt = (1 << 30) | - (dev->portnr << 23) | - (dev->parent->devnum << 16) | (0 << 8) | (0 << 0); + endpt = QH_ENDPT2_MULT(1) | QH_ENDPT2_PORTNUM(dev->portnr) | + QH_ENDPT2_HUBADDR(dev->parent->devnum) | + QH_ENDPT2_UFCMASK(0) | QH_ENDPT2_UFSMASK(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"); + /* + * 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 = QT_TOKEN_DT(0) | QT_TOKEN_TOTALBYTES(sizeof(*req)) | + QT_TOKEN_IOC(0) | QT_TOKEN_CPAGE(0) | QT_TOKEN_CERR(3) | + QT_TOKEN_PID(QT_TOKEN_PID_SETUP) | + QT_TOKEN_STATUS(QT_TOKEN_STATUS_ACTIVE); + qtd[qtd_counter].qt_token = cpu_to_hc32(token); + if (ehci_td_buffer(&qtd[qtd_counter], req, sizeof(*req))) { + printf("unable to construct 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; + /* 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) { - 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; + uint8_t *buf_ptr = buffer; + int left_length = length; + + do { + /* + * Determine the size of this qTD transfer. By default, + * QT_BUFFER_CNT full pages can be used. + */ + int xfr_bytes = QT_BUFFER_CNT * EHCI_PAGE_SIZE; + /* + * However, if the input buffer is not page-aligned, the + * portion of the first page before the buffer start + * offset within that page is unusable. + */ + xfr_bytes -= (uint32_t)buf_ptr & (EHCI_PAGE_SIZE - 1); + /* + * In order to keep each packet within a qTD transfer, + * align the qTD transfer size to PKT_ALIGN. + */ + xfr_bytes &= ~(PKT_ALIGN - 1); + /* + * This transfer may be shorter than the available qTD + * transfer size that has just been computed. + */ + xfr_bytes = min(xfr_bytes, left_length); + + /* + * 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 = QT_TOKEN_DT(toggle) | + QT_TOKEN_TOTALBYTES(xfr_bytes) | + QT_TOKEN_IOC(req == NULL) | QT_TOKEN_CPAGE(0) | + QT_TOKEN_CERR(3) | + QT_TOKEN_PID(usb_pipein(pipe) ? + QT_TOKEN_PID_IN : QT_TOKEN_PID_OUT) | + QT_TOKEN_STATUS(QT_TOKEN_STATUS_ACTIVE); + qtd[qtd_counter].qt_token = cpu_to_hc32(token); + if (ehci_td_buffer(&qtd[qtd_counter], buf_ptr, + xfr_bytes)) { + printf("unable to construct DATA TD\n"); + goto fail; + } + /* Update previous qTD! */ + *tdp = cpu_to_hc32((uint32_t)&qtd[qtd_counter]); + tdp = &qtd[qtd_counter++].qt_next; + /* + * Data toggle has to be adjusted since the qTD transfer + * size is not always an even multiple of + * wMaxPacketSize. + */ + if ((xfr_bytes / maxpacket) & 1) + toggle ^= 1; + buf_ptr += xfr_bytes; + left_length -= xfr_bytes; + } while (left_length > 0); } 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; + /* + * 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 = QT_TOKEN_DT(1) | QT_TOKEN_TOTALBYTES(0) | + QT_TOKEN_IOC(1) | QT_TOKEN_CPAGE(0) | QT_TOKEN_CERR(3) | + QT_TOKEN_PID(usb_pipein(pipe) ? + QT_TOKEN_PID_OUT : QT_TOKEN_PID_IN) | + QT_TOKEN_STATUS(QT_TOKEN_STATUS_ACTIVE); + 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); + ctrl->qh_list.qh_link = cpu_to_hc32((uint32_t)qh | QH_LINK_TYPE_QH); /* Flush dcache */ - ehci_flush_dcache(&qh_list); + flush_dcache_range((uint32_t)&ctrl->qh_list, + ALIGN_END_ADDR(struct QH, &ctrl->qh_list, 1)); + flush_dcache_range((uint32_t)qh, ALIGN_END_ADDR(struct QH, qh, 1)); + flush_dcache_range((uint32_t)qtd, + ALIGN_END_ADDR(struct qTD, qtd, qtd_count)); + + /* Set async. queue head pointer. */ + ehci_writel(&ctrl->hcor->or_asynclistaddr, (uint32_t)&ctrl->qh_list); - usbsts = ehci_readl(&hcor->or_usbsts); - ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f)); + usbsts = ehci_readl(&ctrl->hcor->or_usbsts); + ehci_writel(&ctrl->hcor->or_usbsts, (usbsts & 0x3f)); /* Enable async. schedule. */ - cmd = ehci_readl(&hcor->or_usbcmd); + cmd = ehci_readl(&ctrl->hcor->or_usbcmd); cmd |= CMD_ASE; - ehci_writel(&hcor->or_usbcmd, cmd); + ehci_writel(&ctrl->hcor->or_usbcmd, cmd); - ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, STD_ASS, + ret = handshake((uint32_t *)&ctrl->hcor->or_usbsts, STS_ASS, STS_ASS, 100 * 1000); if (ret < 0) { - printf("EHCI fail timeout STD_ASS set\n"); + printf("EHCI fail timeout STS_ASS set\n"); goto fail; } /* Wait for TDs to be processed. */ ts = get_timer(0); - vtd = td; + vtd = &qtd[qtd_counter - 1]; timeout = USB_TIMEOUT_MS(pipe); do { /* Invalidate dcache */ - ehci_invalidate_dcache(&qh_list); + invalidate_dcache_range((uint32_t)&ctrl->qh_list, + ALIGN_END_ADDR(struct QH, &ctrl->qh_list, 1)); + invalidate_dcache_range((uint32_t)qh, + ALIGN_END_ADDR(struct QH, qh, 1)); + invalidate_dcache_range((uint32_t)qtd, + ALIGN_END_ADDR(struct qTD, qtd, qtd_count)); + token = hc32_to_cpu(vtd->qt_token); - if (!(token & 0x80)) + if (!(QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_ACTIVE)) break; WATCHDOG_RESET(); } while (get_timer(ts) < timeout); + /* + * Invalidate the memory area occupied by buffer + * Don't try to fix the buffer alignment, if it isn't properly + * aligned it's upper layer's fault so let invalidate_dcache_range() + * vow about it. But we have to fix the length as it's actual + * transfer length and can be unaligned. This is potentially + * dangerous operation, it's responsibility of the calling + * code to make sure enough space is reserved. + */ + invalidate_dcache_range((uint32_t)buffer, + ALIGN((uint32_t)buffer + length, ARCH_DMA_MINALIGN)); + /* Check that the TD processing happened */ - if (token & 0x80) { + if (QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_ACTIVE) printf("EHCI timed out on TD - token=%#x\n", token); - } /* Disable async schedule. */ - cmd = ehci_readl(&hcor->or_usbcmd); + cmd = ehci_readl(&ctrl->hcor->or_usbcmd); cmd &= ~CMD_ASE; - ehci_writel(&hcor->or_usbcmd, cmd); + ehci_writel(&ctrl->hcor->or_usbcmd, cmd); - ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, 0, + ret = handshake((uint32_t *)&ctrl->hcor->or_usbsts, STS_ASS, 0, 100 * 1000); if (ret < 0) { - printf("EHCI fail timeout STD_ASS reset\n"); + printf("EHCI fail timeout STS_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)) { + if (!(QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_ACTIVE)) { debug("TOKEN=%#x\n", token); - switch (token & 0xfc) { + switch (QT_TOKEN_GET_STATUS(token) & + ~(QT_TOKEN_STATUS_SPLITXSTATE | QT_TOKEN_STATUS_PERR)) { case 0: - toggle = token >> 31; + toggle = QT_TOKEN_GET_DT(token); usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), toggle); dev->status = 0; break; - case 0x40: + case QT_TOKEN_STATUS_HALTED: dev->status = USB_ST_STALLED; break; - case 0xa0: - case 0x20: + case QT_TOKEN_STATUS_ACTIVE | QT_TOKEN_STATUS_DATBUFERR: + case QT_TOKEN_STATUS_DATBUFERR: dev->status = USB_ST_BUF_ERR; break; - case 0x50: - case 0x10: + case QT_TOKEN_STATUS_HALTED | QT_TOKEN_STATUS_BABBLEDET: + case QT_TOKEN_STATUS_BABBLEDET: dev->status = USB_ST_BABBLE_DET; break; default: dev->status = USB_ST_CRC_ERR; - if ((token & 0x40) == 0x40) + if (QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_HALTED) dev->status |= USB_ST_STALLED; break; } - dev->act_len = length - ((token >> 16) & 0x7fff); + dev->act_len = length - QT_TOKEN_GET_TOTALBYTES(token); } else { dev->act_len = 0; debug("dev=%u, usbsts=%#x, p[1]=%#x, p[2]=%#x\n", - dev->devnum, ehci_readl(&hcor->or_usbsts), - ehci_readl(&hcor->or_portsc[0]), - ehci_readl(&hcor->or_portsc[1])); + dev->devnum, ehci_readl(&ctrl->hcor->or_usbsts), + ehci_readl(&ctrl->hcor->or_portsc[0]), + ehci_readl(&ctrl->hcor->or_portsc[1])); } + free(qtd); return (dev->status != USB_ST_NOT_PROC) ? 0 : -1; fail: - td = (void *)hc32_to_cpu(qh->qh_overlay.qt_next); - while (td != (void *)QT_NEXT_TERMINATE) { - qh->qh_overlay.qt_next = td->qt_next; - ehci_free(td, sizeof(*td)); - td = (void *)hc32_to_cpu(qh->qh_overlay.qt_next); - } - ehci_free(qh, sizeof(*qh)); + free(qtd); return -1; } @@ -558,13 +602,14 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, int len, srclen; uint32_t reg; uint32_t *status_reg; + struct ehci_ctrl *ctrl = dev->controller; if (le16_to_cpu(req->index) > CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS) { printf("The request port(%d) is not configured\n", le16_to_cpu(req->index) - 1); return -1; } - status_reg = (uint32_t *)&hcor->or_portsc[ + status_reg = (uint32_t *)&ctrl->hcor->or_portsc[ le16_to_cpu(req->index) - 1]; srclen = 0; @@ -581,12 +626,14 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, case USB_DT_DEVICE: debug("USB_DT_DEVICE request\n"); srcptr = &descriptor.device; - srclen = 0x12; + srclen = descriptor.device.bLength; break; case USB_DT_CONFIG: debug("USB_DT_CONFIG config\n"); srcptr = &descriptor.config; - srclen = 0x19; + srclen = descriptor.config.bLength + + descriptor.interface.bLength + + descriptor.endpoint.bLength; break; case USB_DT_STRING: debug("USB_DT_STRING config\n"); @@ -621,7 +668,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, case USB_DT_HUB: debug("USB_DT_HUB config\n"); srcptr = &descriptor.hub; - srclen = 0x8; + srclen = descriptor.hub.bLength; break; default: debug("unknown value %x\n", le16_to_cpu(req->value)); @@ -630,7 +677,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, break; case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8): debug("USB_REQ_SET_ADDRESS\n"); - rootdev = le16_to_cpu(req->value); + ctrl->rootdev = le16_to_cpu(req->value); break; case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: debug("USB_REQ_SET_CONFIGURATION\n"); @@ -659,13 +706,13 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, tmpbuf[1] |= USB_PORT_STAT_POWER >> 8; if (ehci_is_TDI()) { - switch ((reg >> 26) & 3) { - case 0: + switch (PORTSC_PSPD(reg)) { + case PORTSC_PSPD_FS: break; - case 1: + case PORTSC_PSPD_LS: tmpbuf[1] |= USB_PORT_STAT_LOW_SPEED >> 8; break; - case 2: + case PORTSC_PSPD_HS: default: tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8; break; @@ -680,7 +727,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, tmpbuf[2] |= USB_PORT_STAT_C_ENABLE; if (reg & EHCI_PS_OCC) tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT; - if (portreset & (1 << le16_to_cpu(req->index))) + if (ctrl->portreset & (1 << le16_to_cpu(req->index))) tmpbuf[2] |= USB_PORT_STAT_C_RESET; srcptr = tmpbuf; @@ -695,7 +742,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, ehci_writel(status_reg, reg); break; case USB_PORT_FEAT_POWER: - if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams))) { + if (HCS_PPC(ehci_readl(&ctrl->hccr->cr_hcsparams))) { reg |= EHCI_PS_PP; ehci_writel(status_reg, reg); } @@ -732,7 +779,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, ret = handshake(status_reg, EHCI_PS_PR, 0, 2 * 1000); if (!ret) - portreset |= + ctrl->portreset |= 1 << le16_to_cpu(req->index); else printf("port(%d) reset error\n", @@ -744,7 +791,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, goto unknown; } /* unblock posted writes */ - (void) ehci_readl(&hcor->or_usbcmd); + (void) ehci_readl(&ctrl->hcor->or_usbcmd); break; case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8): reg = ehci_readl(status_reg); @@ -756,7 +803,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_PE; break; case USB_PORT_FEAT_POWER: - if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams))) + if (HCS_PPC(ehci_readl(&ctrl->hccr->cr_hcsparams))) reg = reg & ~(EHCI_PS_CLEAR | EHCI_PS_PP); case USB_PORT_FEAT_C_CONNECTION: reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_CSC; @@ -765,7 +812,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_OCC; break; case USB_PORT_FEAT_C_RESET: - portreset &= ~(1 << le16_to_cpu(req->index)); + ctrl->portreset &= ~(1 << le16_to_cpu(req->index)); break; default: debug("unknown feature %x\n", le16_to_cpu(req->value)); @@ -773,14 +820,14 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, } ehci_writel(status_reg, reg); /* unblock posted write */ - (void) ehci_readl(&hcor->or_usbcmd); + (void) ehci_readl(&ctrl->hcor->or_usbcmd); break; default: debug("Unknown request\n"); goto unknown; } - wait_ms(1); + mdelay(1); len = min3(srclen, le16_to_cpu(req->length), length); if (srcptr != NULL && len > 0) memcpy(buffer, srcptr, len); @@ -801,72 +848,77 @@ unknown: return -1; } -int usb_lowlevel_stop(void) +int usb_lowlevel_stop(int index) { - return ehci_hcd_stop(); + return ehci_hcd_stop(index); } -int usb_lowlevel_init(void) +int usb_lowlevel_init(int index, void **controller) { uint32_t reg; uint32_t cmd; + struct QH *qh_list; - if (ehci_hcd_init() != 0) + if (ehci_hcd_init(index, &ehcic[index].hccr, &ehcic[index].hcor)) return -1; /* EHCI spec section 4.1 */ - if (ehci_reset() != 0) + if (ehci_reset(index)) return -1; #if defined(CONFIG_EHCI_HCD_INIT_AFTER_RESET) - if (ehci_hcd_init() != 0) + if (ehci_hcd_init(index, &ehcic[index].hccr, &ehcic[index].hcor)) return -1; #endif - /* Set head of reclaim list */ - memset(&qh_list, 0, sizeof(qh_list)); - qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH); - qh_list.qh_endpt1 = cpu_to_hc32((1 << 15) | (USB_SPEED_HIGH << 12)); - qh_list.qh_curtd = cpu_to_hc32(QT_NEXT_TERMINATE); - qh_list.qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); - qh_list.qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); - qh_list.qh_overlay.qt_token = cpu_to_hc32(0x40); + qh_list = &ehcic[index].qh_list; - /* Set async. queue head pointer. */ - ehci_writel(&hcor->or_asynclistaddr, (uint32_t)&qh_list); - - reg = ehci_readl(&hccr->cr_hcsparams); + /* Set head of reclaim list */ + memset(qh_list, 0, sizeof(*qh_list)); + qh_list->qh_link = cpu_to_hc32((uint32_t)qh_list | QH_LINK_TYPE_QH); + qh_list->qh_endpt1 = cpu_to_hc32(QH_ENDPT1_H(1) | + QH_ENDPT1_EPS(USB_SPEED_HIGH)); + qh_list->qh_curtd = cpu_to_hc32(QT_NEXT_TERMINATE); + qh_list->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); + qh_list->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); + qh_list->qh_overlay.qt_token = + cpu_to_hc32(QT_TOKEN_STATUS(QT_TOKEN_STATUS_HALTED)); + + reg = ehci_readl(&ehcic[index].hccr->cr_hcsparams); descriptor.hub.bNbrPorts = HCS_N_PORTS(reg); - printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts); + debug("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts); /* Port Indicators */ if (HCS_INDICATOR(reg)) - descriptor.hub.wHubCharacteristics |= 0x80; + put_unaligned(get_unaligned(&descriptor.hub.wHubCharacteristics) + | 0x80, &descriptor.hub.wHubCharacteristics); /* Port Power Control */ if (HCS_PPC(reg)) - descriptor.hub.wHubCharacteristics |= 0x01; + put_unaligned(get_unaligned(&descriptor.hub.wHubCharacteristics) + | 0x01, &descriptor.hub.wHubCharacteristics); /* Start the host controller. */ - cmd = ehci_readl(&hcor->or_usbcmd); + cmd = ehci_readl(&ehcic[index].hcor->or_usbcmd); /* * Philips, Intel, and maybe others need CMD_RUN before the * root hub will detect new devices (why?); NEC doesn't */ cmd &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET); cmd |= CMD_RUN; - ehci_writel(&hcor->or_usbcmd, cmd); + ehci_writel(&ehcic[index].hcor->or_usbcmd, cmd); /* take control over the ports */ - cmd = ehci_readl(&hcor->or_configflag); + cmd = ehci_readl(&ehcic[index].hcor->or_configflag); cmd |= FLAG_CF; - ehci_writel(&hcor->or_configflag, cmd); + ehci_writel(&ehcic[index].hcor->or_configflag, cmd); /* unblock posted write */ - cmd = ehci_readl(&hcor->or_usbcmd); - wait_ms(5); - reg = HC_VERSION(ehci_readl(&hccr->cr_capbase)); + cmd = ehci_readl(&ehcic[index].hcor->or_usbcmd); + mdelay(5); + reg = HC_VERSION(ehci_readl(&ehcic[index].hccr->cr_capbase)); printf("USB EHCI %x.%02x\n", reg >> 8, reg & 0xff); - rootdev = 0; + ehcic[index].rootdev = 0; + *controller = &ehcic[index]; return 0; } @@ -886,14 +938,15 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer, int length, struct devrequest *setup) { + struct ehci_ctrl *ctrl = dev->controller; if (usb_pipetype(pipe) != PIPE_CONTROL) { debug("non-control pipe (type=%lu)", usb_pipetype(pipe)); return -1; } - if (usb_pipedevice(pipe) == rootdev) { - if (rootdev == 0) + if (usb_pipedevice(pipe) == ctrl->rootdev) { + if (!ctrl->rootdev) dev->speed = USB_SPEED_HIGH; return ehci_submit_root(dev, pipe, buffer, length, setup); } @@ -904,35 +957,24 @@ int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer, int length, int interval) { - debug("dev=%p, pipe=%lu, buffer=%p, length=%d, interval=%d", dev, pipe, buffer, length, interval); - return ehci_submit_async(dev, pipe, buffer, length, NULL); -} -#ifdef CONFIG_SYS_USB_EVENT_POLL -/* - * This function polls for USB keyboard data. - */ -void usb_event_poll() -{ - struct stdio_dev *dev; - struct usb_device *usb_kbd_dev; - struct usb_interface *iface; - struct usb_endpoint_descriptor *ep; - int pipe; - int maxp; - - /* Get the pointer to USB Keyboard device pointer */ - dev = stdio_get_by_name("usbkbd"); - usb_kbd_dev = (struct usb_device *)dev->priv; - iface = &usb_kbd_dev->config.if_desc[0]; - ep = &iface->ep_desc[0]; - pipe = usb_rcvintpipe(usb_kbd_dev, ep->bEndpointAddress); - - /* Submit a interrupt transfer request */ - maxp = usb_maxpacket(usb_kbd_dev, pipe); - usb_submit_int_msg(usb_kbd_dev, pipe, &new[0], - maxp > 8 ? 8 : maxp, ep->bInterval); + /* + * Interrupt transfers requiring several transactions are not supported + * because bInterval is ignored. + * + * Also, ehci_submit_async() relies on wMaxPacketSize being a power of 2 + * <= PKT_ALIGN if several qTDs are required, while the USB + * specification does not constrain this for interrupt transfers. That + * means that ehci_submit_async() would support interrupt transfers + * requiring several transactions only as long as the transfer size does + * not require more than a single qTD. + */ + if (length > usb_maxpacket(dev, pipe)) { + printf("%s: Interrupt transfers requiring several transactions " + "are not supported.\n", __func__); + return -1; + } + return ehci_submit_async(dev, pipe, buffer, length, NULL); } -#endif /* CONFIG_SYS_USB_EVENT_POLL */