volatile struct ehci_hcor *hcor;
static uint16_t portreset;
-static struct QH qh_list __attribute__((aligned(32)));
+DEFINE_ALIGN_BUFFER(struct QH, qh_list, 1, USB_DMA_MINALIGN);
+
+#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;
0x29, /* bDescriptorType: hub descriptor */
2, /* bNrPorts -- runtime modified */
0, /* wHubCharacteristics */
- 0xff, /* bPwrOn2PwrGood */
+ 10, /* bPwrOn2PwrGood */
0, /* bHubCntrCurrent */
{}, /* Device removable */
{} /* at most 7 ports! XXX */
#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)
+void __ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
{
+ mdelay(50);
}
-static inline void ehci_invalidate_dcache(struct QH *qh)
-{
-}
-#endif /* CONFIG_EHCI_DCACHE */
+void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
+ __attribute__((weak, alias("__ehci_powerup_fixup")));
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)
{
uint32_t cmd;
#endif
ehci_writel(reg_ptr, tmp);
}
+
+#ifdef CONFIG_USB_EHCI_TXFIFO_THRESH
+ cmd = ehci_readl(&hcor->or_txfilltuning);
+ cmd &= ~TXFIFO_THRESH(0x3f);
+ cmd |= TXFIFO_THRESH(CONFIG_USB_EHCI_TXFIFO_THRESH);
+ ehci_writel(&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) {
td->qt_buffer[idx] = cpu_to_hc32(addr);
}
if (idx == 5) {
- debug("out of buffer pointers (%u bytes left)\n", sz);
+ printf("out of buffer pointers (%u bytes left)\n", sz);
return -1;
}
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);
+ ALLOC_ALIGN_BUFFER(struct qTD, qtd, 3, USB_DMA_MINALIGN);
+ 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,
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);
+ memset(qh, 0, sizeof(struct QH));
+ memset(qtd, 0, 3 * 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) |
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);
+ /*
+ * 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);
- 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));
+ qtd[qtd_counter].qt_token = cpu_to_hc32(token);
+ if (ehci_td_buffer(&qtd[qtd_counter], req, sizeof(*req)) != 0) {
+ printf("unable construct SETUP td\n");
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);
+ /*
+ * 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);
- 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));
+ qtd[qtd_counter].qt_token = cpu_to_hc32(token);
+ if (ehci_td_buffer(&qtd[qtd_counter], buffer, length) != 0) {
+ printf("unable construct DATA td\n");
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;
}
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);
+ /*
+ * 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);
- td->qt_token = cpu_to_hc32(token);
- *tdp = cpu_to_hc32((uint32_t) td);
- tdp = &td->qt_next;
+ 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);
+ 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)qh_list,
+ ALIGN_END_ADDR(struct QH, 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, 3));
+
+ /* Set async. queue head pointer. */
+ ehci_writel(&hcor->or_asynclistaddr, (uint32_t)qh_list);
usbsts = ehci_readl(&hcor->or_usbsts);
ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f));
/* 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)qh_list,
+ ALIGN_END_ADDR(struct QH, 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, 3));
+
token = hc32_to_cpu(vtd->qt_token);
if (!(token & 0x80))
break;
WATCHDOG_RESET();
- } while (get_timer(ts) < CONFIG_SYS_HZ);
+ } 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) {
+ printf("EHCI timed out on TD - token=%#x\n", token);
+ }
/* Disable async schedule. */
cmd = ehci_readl(&hcor->or_usbcmd);
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);
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));
return -1;
}
* usb 2.0 specification say 50 ms resets on
* root
*/
- wait_ms(50);
- /* terminate the reset */
+ ehci_powerup_fixup(status_reg, ®);
+
ehci_writel(status_reg, reg & ~EHCI_PS_PR);
/*
* A host controller must terminate the reset
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);
#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);
-
- /* Set async. queue head pointer. */
- ehci_writel(&hcor->or_asynclistaddr, (uint32_t)&qh_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);
reg = ehci_readl(&hccr->cr_hcsparams);
descriptor.hub.bNbrPorts = HCS_N_PORTS(reg);
ehci_writel(&hcor->or_configflag, cmd);
/* unblock posted write */
cmd = ehci_readl(&hcor->or_usbcmd);
- wait_ms(5);
+ mdelay(5);
reg = HC_VERSION(ehci_readl(&hccr->cr_capbase));
printf("USB EHCI %x.%02x\n", reg >> 8, reg & 0xff);
debug("dev=%p, pipe=%lu, buffer=%p, length=%d, interval=%d",
dev, pipe, buffer, length, interval);
- return -1;
+ return ehci_submit_async(dev, pipe, buffer, length, NULL);
}
projects / karo-tx-uboot.git / blobdiff