--- /dev/null
+/*
+ * Part of this code has been derived from linux:
+ * Universal Host Controller Interface driver for USB (take II).
+ *
+ * (c) 1999-2001 Georg Acher, acher@in.tum.de (executive slave) (base guitar)
+ * Deti Fliegl, deti@fliegl.de (executive slave) (lead voice)
+ * Thomas Sailer, sailer@ife.ee.ethz.ch (chief consultant) (cheer leader)
+ * Roman Weissgaerber, weissg@vienna.at (virt root hub) (studio porter)
+ * (c) 2000 Yggdrasil Computing, Inc. (port of new PCI interface support
+ * from usb-ohci.c by Adam Richter, adam@yggdrasil.com).
+ * (C) 2000 David Brownell, david-b@pacbell.net (usb-ohci.c)
+ *
+ * HW-initalization based on material of
+ *
+ * (C) Copyright 1999 Linus Torvalds
+ * (C) Copyright 1999 Johannes Erdfelt
+ * (C) Copyright 1999 Randy Dunlap
+ * (C) Copyright 1999 Gregory P. Smith
+ *
+ *
+ * Adapted for U-Boot:
+ * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
+ * (C) Copyright 2008, Daniel Hellström, daniel@gaisler.com
+ * Added AMBA Plug&Play detection of GRUSB, modified interrupt handler.
+ * Added cache flushes where needed.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/**********************************************************************
+ * How it works:
+ * -------------
+ * The framelist / Transfer descriptor / Queue Heads are similar like
+ * in the linux usb_uhci.c.
+ *
+ * During initialization, the following skeleton is allocated in init_skel:
+ *
+ * framespecific | common chain
+ *
+ * framelist[]
+ * [ 0 ]-----> TD ---------\
+ * [ 1 ]-----> TD ----------> TD ------> QH -------> QH -------> QH ---> NULL
+ * ... TD ---------/
+ * [1023]-----> TD --------/
+ *
+ * ^^ ^^ ^^ ^^ ^^
+ * 7 TDs for 1 TD for Start of Start of End Chain
+ * INT (2-128ms) 1ms-INT CTRL Chain BULK Chain
+ *
+ *
+ * Since this is a bootloader, the isochronous transfer descriptor have been removed.
+ *
+ * Interrupt Transfers.
+ * --------------------
+ * For Interrupt transfers USB_MAX_TEMP_INT_TD Transfer descriptor are available. They
+ * will be inserted after the appropriate (depending the interval setting) skeleton TD.
+ * If an interrupt has been detected the dev->irqhandler is called. The status and number
+ * of transfered bytes is stored in dev->irq_status resp. dev->irq_act_len. If the
+ * dev->irqhandler returns 0, the interrupt TD is removed and disabled. If an 1 is returned,
+ * the interrupt TD will be reactivated.
+ *
+ * Control Transfers
+ * -----------------
+ * Control Transfers are issued by filling the tmp_td with the appropriate data and connect
+ * them to the qh_cntrl queue header. Before other control/bulk transfers can be issued,
+ * the programm has to wait for completion. This does not allows asynchronous data transfer.
+ *
+ * Bulk Transfers
+ * --------------
+ * Bulk Transfers are issued by filling the tmp_td with the appropriate data and connect
+ * them to the qh_bulk queue header. Before other control/bulk transfers can be issued,
+ * the programm has to wait for completion. This does not allows asynchronous data transfer.
+ *
+ *
+ */
+
+#include <common.h>
+#include <ambapp.h>
+#include <asm/leon.h>
+#include <asm/leon3.h>
+#include <asm/processor.h>
+
+#ifdef CONFIG_USB_UHCI
+
+#include <usb.h>
+#include "usb_uhci.h"
+
+#define USB_MAX_TEMP_TD 128 /* number of temporary TDs for bulk and control transfers */
+#define USB_MAX_TEMP_INT_TD 32 /* number of temporary TDs for Interrupt transfers */
+
+extern int leon3_snooping_avail;
+/*
+#define out16r(address,data) (*(unsigned short *)(address) = \
+ (unsigned short)( \
+ (((unsigned short)(data)&0xff)<<8) | \
+ (((unsigned short)(data)&0xff00)>>8) \
+ ))
+ */
+#define out16r(address,data) _out16r((unsigned int)(address), (unsigned short)(data))
+void _out16r(unsigned int address, unsigned short data)
+{
+ unsigned short val = (unsigned short)((((unsigned short)(data) & 0xff)
+ << 8) | (((unsigned short)(data)
+ & 0xff00) >> 8));
+#ifdef UHCI_DEBUG_REGS
+ printf("out16r(0x%lx,0x%04x = 0x%04x)\n", address, val, data);
+#endif
+ *(unsigned short *)(address) = val;
+}
+
+#define out32r(address,data) _out32r((unsigned int)(address), (unsigned int)(data))
+void _out32r(unsigned int address, unsigned int data)
+{
+ unsigned int val = (unsigned int)((((unsigned int)(data) & 0x000000ff)
+ << 24) | (((unsigned int)(data) &
+ 0x0000ff00) << 8) |
+ (((unsigned int)(data) & 0x00ff0000)
+ >> 8) | (((unsigned int)(data) &
+ 0xff000000) >> 24));
+#ifdef UHCI_DEBUG_REGS
+ printf("out32r(0x%lx,0x%lx = 0x%lx)\n", address, val, data);
+#endif
+ *(unsigned int *)address = val;
+}
+
+#define in16r(address) _in16r((unsigned int)(address))
+unsigned short _in16r(unsigned int address)
+{
+ unsigned short val = sparc_load_reg_cachemiss_word(address);
+ val = ((val << 8) & 0xff00) | ((val >> 8) & 0xff);
+#ifdef UHCI_DEBUG_REGS
+ printf("in16r(0x%lx): 0x%04x\n", address, val);
+#endif
+ return val;
+}
+
+#define in32r(address) _in32r((unsigned int)(address))
+unsigned int _in32r(unsigned int address)
+{
+ unsigned int val = sparc_load_reg_cachemiss(address);
+ val =
+ ((val << 24) & 0xff000000) | ((val << 8) & 0xff0000) | ((val >> 8) &
+ 0xff00) |
+ ((val >> 24) & 0xff);
+#ifdef UHCI_DEBUG_REGS
+ printf("in32r(0x%lx): 0x%08x\n", address, val);
+#endif
+ return val;
+}
+
+#define READ32(address) sparc_load_reg_cachemiss((unsigned int)(address))
+
+/*#define USB_UHCI_DEBUG*/
+#undef USB_UHCI_DEBUG
+
+void usb_show_td(int max);
+#ifdef USB_UHCI_DEBUG
+void grusb_show_regs(void);
+#define USB_UHCI_PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define USB_UHCI_PRINTF(fmt,args...)
+#endif
+
+static int grusb_irq = -1; /* irq vector, if -1 uhci is stopped / reseted */
+unsigned int usb_base_addr; /* base address */
+
+static uhci_td_t td_int[8] __attribute__ ((aligned(16))); /* Interrupt Transfer descriptors */
+static uhci_qh_t qh_cntrl __attribute__ ((aligned(16))); /* control Queue Head */
+static uhci_qh_t qh_bulk __attribute__ ((aligned(16))); /* bulk Queue Head */
+static uhci_qh_t qh_end __attribute__ ((aligned(16))); /* end Queue Head */
+static uhci_td_t td_last __attribute__ ((aligned(16))); /* last TD (linked with end chain) */
+
+/* temporary tds */
+static uhci_td_t tmp_td[USB_MAX_TEMP_TD] __attribute__ ((aligned(16))); /* temporary bulk/control td's */
+static uhci_td_t tmp_int_td[USB_MAX_TEMP_INT_TD] __attribute__ ((aligned(16))); /* temporary interrupt td's */
+
+static unsigned long framelist[1024] __attribute__ ((aligned(0x1000))); /* frame list */
+
+static struct virt_root_hub rh; /* struct for root hub */
+
+/**********************************************************************
+ * some forward decleration
+ */
+int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
+ void *buffer, int transfer_len,
+ struct devrequest *setup);
+
+/* fill a td with the approproiate data. Link, status, info and buffer
+ * are used by the USB controller itselfes, dev is used to identify the
+ * "connected" device
+ */
+void usb_fill_td(uhci_td_t * td, unsigned long link, unsigned long status,
+ unsigned long info, unsigned long buffer, unsigned long dev)
+{
+ td->link = swap_32(link);
+ td->status = swap_32(status);
+ if ((info & UHCI_PID) == 0)
+ info |= USB_PID_OUT;
+ td->info = swap_32(info);
+ td->buffer = swap_32(buffer);
+ td->dev_ptr = dev;
+}
+
+/* fill a qh with the approproiate data. Head and element are used by the USB controller
+ * itselfes. As soon as a valid dev_ptr is filled, a td chain is connected to the qh.
+ * Please note, that after completion of the td chain, the entry element is removed /
+ * marked invalid by the USB controller.
+ */
+void usb_fill_qh(uhci_qh_t * qh, unsigned long head, unsigned long element)
+{
+ qh->head = swap_32(head);
+ qh->element = swap_32(element);
+ qh->dev_ptr = 0L;
+}
+
+/* get the status of a td->status
+ */
+unsigned long usb_uhci_td_stat(unsigned long status)
+{
+ unsigned long result = 0;
+ result |= (status & TD_CTRL_NAK) ? USB_ST_NAK_REC : 0;
+ result |= (status & TD_CTRL_STALLED) ? USB_ST_STALLED : 0;
+ result |= (status & TD_CTRL_DBUFERR) ? USB_ST_BUF_ERR : 0;
+ result |= (status & TD_CTRL_BABBLE) ? USB_ST_BABBLE_DET : 0;
+ result |= (status & TD_CTRL_CRCTIMEO) ? USB_ST_CRC_ERR : 0;
+ result |= (status & TD_CTRL_BITSTUFF) ? USB_ST_BIT_ERR : 0;
+ result |= (status & TD_CTRL_ACTIVE) ? USB_ST_NOT_PROC : 0;
+ return result;
+}
+
+/* get the status and the transfered len of a td chain.
+ * called from the completion handler
+ */
+int usb_get_td_status(uhci_td_t * td, struct usb_device *dev)
+{
+ unsigned long temp, info;
+ unsigned long stat;
+ uhci_td_t *mytd = td;
+
+ if (dev->devnum == rh.devnum)
+ return 0;
+ dev->act_len = 0;
+ stat = 0;
+ do {
+ temp = swap_32((unsigned long)READ32(&mytd->status));
+ stat = usb_uhci_td_stat(temp);
+ info = swap_32((unsigned long)READ32(&mytd->info));
+ if (((info & 0xff) != USB_PID_SETUP) && (((info >> 21) & 0x7ff) != 0x7ff) && (temp & 0x7FF) != 0x7ff) { /* if not setup and not null data pack */
+ dev->act_len += (temp & 0x7FF) + 1; /* the transfered len is act_len + 1 */
+ }
+ if (stat) { /* status no ok */
+ dev->status = stat;
+ return -1;
+ }
+ temp = swap_32((unsigned long)READ32(&mytd->link));
+ mytd = (uhci_td_t *) (temp & 0xfffffff0);
+ } while ((temp & 0x1) == 0); /* process all TDs */
+ dev->status = stat;
+ return 0; /* Ok */
+}
+
+/*-------------------------------------------------------------------
+ * LOW LEVEL STUFF
+ * assembles QHs und TDs for control, bulk and iso
+ *-------------------------------------------------------------------*/
+int dummy(void)
+{
+ USB_UHCI_PRINTF("DUMMY\n");
+ return 0;
+}
+
+/* Submits a control message. That is a Setup, Data and Status transfer.
+ * Routine does not wait for completion.
+ */
+int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int transfer_len, struct devrequest *setup)
+{
+ unsigned long destination, status;
+ int maxsze = usb_maxpacket(dev, pipe);
+ unsigned long dataptr;
+ int len;
+ int pktsze;
+ int i = 0;
+
+ if (!maxsze) {
+ USB_UHCI_PRINTF
+ ("uhci_submit_control_urb: pipesize for pipe %lx is zero\n",
+ pipe);
+ return -1;
+ }
+ if (((pipe >> 8) & 0x7f) == rh.devnum) {
+ /* this is the root hub -> redirect it */
+ return uhci_submit_rh_msg(dev, pipe, buffer, transfer_len,
+ setup);
+ }
+ USB_UHCI_PRINTF("uhci_submit_control start len %x, maxsize %x\n",
+ transfer_len, maxsze);
+ /* The "pipe" thing contains the destination in bits 8--18 */
+ destination = (pipe & PIPE_DEVEP_MASK) | USB_PID_SETUP; /* Setup stage */
+ /* 3 errors */
+ status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | (3 << 27);
+ /* (urb->transfer_flags & USB_DISABLE_SPD ? 0 : TD_CTRL_SPD); */
+ /* Build the TD for the control request, try forever, 8 bytes of data */
+ usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status, destination | (7 << 21),
+ (unsigned long)setup, (unsigned long)dev);
+#ifdef DEBUG_EXTRA
+ {
+ char *sp = (char *)setup;
+ printf("SETUP to pipe %lx: %x %x %x %x %x %x %x %x\n", pipe,
+ sp[0], sp[1], sp[2], sp[3], sp[4], sp[5], sp[6], sp[7]);
+ }
+#endif
+ dataptr = (unsigned long)buffer;
+ len = transfer_len;
+
+ /* If direction is "send", change the frame from SETUP (0x2D)
+ to OUT (0xE1). Else change it from SETUP to IN (0x69). */
+ destination =
+ (pipe & PIPE_DEVEP_MASK) | ((pipe & USB_DIR_IN) ==
+ 0 ? USB_PID_OUT : USB_PID_IN);
+ while (len > 0) {
+ /* data stage */
+ pktsze = len;
+ i++;
+ if (pktsze > maxsze)
+ pktsze = maxsze;
+ destination ^= 1 << TD_TOKEN_TOGGLE; /* toggle DATA0/1 */
+ usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status, destination | ((pktsze - 1) << 21), dataptr, (unsigned long)dev); /* Status, pktsze bytes of data */
+ tmp_td[i - 1].link = swap_32((unsigned long)&tmp_td[i]);
+
+ dataptr += pktsze;
+ len -= pktsze;
+ }
+
+ /* Build the final TD for control status */
+ /* It's only IN if the pipe is out AND we aren't expecting data */
+
+ destination &= ~UHCI_PID;
+ if (((pipe & USB_DIR_IN) == 0) || (transfer_len == 0))
+ destination |= USB_PID_IN;
+ else
+ destination |= USB_PID_OUT;
+ destination |= 1 << TD_TOKEN_TOGGLE; /* End in Data1 */
+ i++;
+ status &= ~TD_CTRL_SPD;
+ /* no limit on errors on final packet , 0 bytes of data */
+ usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status | TD_CTRL_IOC,
+ destination | (UHCI_NULL_DATA_SIZE << 21), 0,
+ (unsigned long)dev);
+ tmp_td[i - 1].link = swap_32((unsigned long)&tmp_td[i]); /* queue status td */
+ /* usb_show_td(i+1); */
+ USB_UHCI_PRINTF("uhci_submit_control end (%d tmp_tds used)\n", i);
+ /* first mark the control QH element terminated */
+ qh_cntrl.element = 0xffffffffL;
+ /* set qh active */
+ qh_cntrl.dev_ptr = (unsigned long)dev;
+ /* fill in tmp_td_chain */
+ dummy();
+ qh_cntrl.element = swap_32((unsigned long)&tmp_td[0]);
+ return 0;
+}
+
+/*-------------------------------------------------------------------
+ * Prepare TDs for bulk transfers.
+ */
+int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int transfer_len)
+{
+ unsigned long destination, status, info;
+ unsigned long dataptr;
+ int maxsze = usb_maxpacket(dev, pipe);
+ int len;
+ int i = 0;
+
+ if (transfer_len < 0) {
+ printf("Negative transfer length in submit_bulk\n");
+ return -1;
+ }
+ if (!maxsze)
+ return -1;
+ /* The "pipe" thing contains the destination in bits 8--18. */
+ destination = (pipe & PIPE_DEVEP_MASK) | usb_packetid(pipe);
+ /* 3 errors */
+ status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | (3 << 27);
+ /* ((urb->transfer_flags & USB_DISABLE_SPD) ? 0 : TD_CTRL_SPD) | (3 << 27); */
+ /* Build the TDs for the bulk request */
+ len = transfer_len;
+ dataptr = (unsigned long)buffer;
+ do {
+ int pktsze = len;
+ if (pktsze > maxsze)
+ pktsze = maxsze;
+ /* pktsze bytes of data */
+ info =
+ destination | (((pktsze - 1) & UHCI_NULL_DATA_SIZE) << 21) |
+ (usb_gettoggle
+ (dev, usb_pipeendpoint(pipe),
+ usb_pipeout(pipe)) << TD_TOKEN_TOGGLE);
+
+ if ((len - pktsze) == 0)
+ status |= TD_CTRL_IOC; /* last one generates INT */
+
+ usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status, info, dataptr, (unsigned long)dev); /* Status, pktsze bytes of data */
+ if (i > 0)
+ tmp_td[i - 1].link = swap_32((unsigned long)&tmp_td[i]);
+ i++;
+ dataptr += pktsze;
+ len -= pktsze;
+ usb_dotoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
+ } while (len > 0);
+ /* first mark the bulk QH element terminated */
+ qh_bulk.element = 0xffffffffL;
+ /* set qh active */
+ qh_bulk.dev_ptr = (unsigned long)dev;
+ /* fill in tmp_td_chain */
+ qh_bulk.element = swap_32((unsigned long)&tmp_td[0]);
+ return 0;
+}
+
+/* search a free interrupt td
+ */
+uhci_td_t *uhci_alloc_int_td(void)
+{
+ int i;
+ for (i = 0; i < USB_MAX_TEMP_INT_TD; i++) {
+ if (tmp_int_td[i].dev_ptr == 0) /* no device assigned -> free TD */
+ return &tmp_int_td[i];
+ }
+ return NULL;
+}
+
+/*-------------------------------------------------------------------
+ * submits USB interrupt (ie. polling ;-)
+ */
+int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int transfer_len, int interval)
+{
+ int nint, n;
+ unsigned long status, destination;
+ unsigned long info, tmp;
+ uhci_td_t *mytd;
+ if (interval < 0 || interval >= 256)
+ return -1;
+
+ if (interval == 0)
+ nint = 0;
+ else {
+ for (nint = 0, n = 1; nint <= 8; nint++, n += n) { /* round interval down to 2^n */
+ if (interval < n) {
+ interval = n / 2;
+ break;
+ }
+ }
+ nint--;
+ }
+
+ USB_UHCI_PRINTF("Rounded interval to %i, chain %i\n", interval, nint);
+ mytd = uhci_alloc_int_td();
+ if (mytd == NULL) {
+ printf("No free INT TDs found\n");
+ return -1;
+ }
+ status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | TD_CTRL_IOC | (3 << 27);
+/* (urb->transfer_flags & USB_DISABLE_SPD ? 0 : TD_CTRL_SPD) | (3 << 27);
+*/
+
+ destination =
+ (pipe & PIPE_DEVEP_MASK) | usb_packetid(pipe) |
+ (((transfer_len - 1) & 0x7ff) << 21);
+
+ info =
+ destination |
+ (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)) <<
+ TD_TOKEN_TOGGLE);
+ tmp = swap_32(td_int[nint].link);
+ usb_fill_td(mytd, tmp, status, info, (unsigned long)buffer,
+ (unsigned long)dev);
+ /* Link it */
+ tmp = swap_32((unsigned long)mytd);
+ td_int[nint].link = tmp;
+
+ usb_dotoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
+
+ return 0;
+}
+
+/**********************************************************************
+ * Low Level functions
+ */
+
+void reset_hc(void)
+{
+
+ /* Global reset for 100ms */
+ out16r(usb_base_addr + USBPORTSC1, 0x0204);
+ out16r(usb_base_addr + USBPORTSC2, 0x0204);
+ out16r(usb_base_addr + USBCMD, USBCMD_GRESET | USBCMD_RS);
+ /* Turn off all interrupts */
+ out16r(usb_base_addr + USBINTR, 0);
+ mdelay(50);
+ out16r(usb_base_addr + USBCMD, 0);
+ mdelay(10);
+}
+
+void start_hc(void)
+{
+ int timeout = 1000;
+
+ while (in16r(usb_base_addr + USBCMD) & USBCMD_HCRESET) {
+ if (!--timeout) {
+ printf("USBCMD_HCRESET timed out!\n");
+ break;
+ }
+ }
+ /* Turn on all interrupts */
+ out16r(usb_base_addr + USBINTR,
+ USBINTR_TIMEOUT | USBINTR_RESUME | USBINTR_IOC | USBINTR_SP);
+ /* Start at frame 0 */
+ out16r(usb_base_addr + USBFRNUM, 0);
+ /* set Framebuffer base address */
+ out32r(usb_base_addr + USBFLBASEADD, (unsigned long)&framelist);
+ /* Run and mark it configured with a 64-byte max packet */
+ out16r(usb_base_addr + USBCMD, USBCMD_RS | USBCMD_CF | USBCMD_MAXP);
+}
+
+/* Initialize the skeleton
+ */
+void usb_init_skel(void)
+{
+ unsigned long temp;
+ int n;
+
+ for (n = 0; n < USB_MAX_TEMP_INT_TD; n++)
+ tmp_int_td[n].dev_ptr = 0L; /* no devices connected */
+ /* last td */
+ usb_fill_td(&td_last, UHCI_PTR_TERM, TD_CTRL_IOC, USB_PID_OUT, 0, 0L);
+ /* usb_fill_td(&td_last,UHCI_PTR_TERM,0,0,0); */
+ /* End Queue Header */
+ usb_fill_qh(&qh_end, UHCI_PTR_TERM, (unsigned long)&td_last);
+ /* Bulk Queue Header */
+ temp = (unsigned long)&qh_end;
+ usb_fill_qh(&qh_bulk, temp | UHCI_PTR_QH, UHCI_PTR_TERM);
+ /* Control Queue Header */
+ temp = (unsigned long)&qh_bulk;
+ usb_fill_qh(&qh_cntrl, temp | UHCI_PTR_QH, UHCI_PTR_TERM);
+ /* 1ms Interrupt td */
+ temp = (unsigned long)&qh_cntrl;
+ usb_fill_td(&td_int[0], temp | UHCI_PTR_QH, 0, USB_PID_OUT, 0, 0L);
+ temp = (unsigned long)&td_int[0];
+ for (n = 1; n < 8; n++)
+ usb_fill_td(&td_int[n], temp, 0, USB_PID_OUT, 0, 0L);
+ for (n = 0; n < 1024; n++) {
+ /* link all framelist pointers to one of the interrupts */
+ int m, o;
+ if ((n & 127) == 127)
+ framelist[n] = swap_32((unsigned long)&td_int[0]);
+ else
+ for (o = 1, m = 2; m <= 128; o++, m += m)
+ if ((n & (m - 1)) == ((m - 1) / 2))
+ framelist[n] =
+ swap_32((unsigned long)&td_int[o]);
+
+ }
+}
+
+/* check the common skeleton for completed transfers, and update the status
+ * of the "connected" device. Called from the IRQ routine.
+ */
+void usb_check_skel(void)
+{
+ struct usb_device *dev;
+ /* start with the control qh */
+ if (qh_cntrl.dev_ptr != 0) { /* it's a device assigned check if this caused IRQ */
+ dev = (struct usb_device *)qh_cntrl.dev_ptr;
+ /* Flush cache now that hardware updated DATA and TDs/QHs */
+ if (!leon3_snooping_avail)
+ sparc_dcache_flush_all();
+ usb_get_td_status(&tmp_td[0], dev); /* update status */
+ if (!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
+ qh_cntrl.dev_ptr = 0;
+ }
+ }
+ /* now process the bulk */
+ if (qh_bulk.dev_ptr != 0) { /* it's a device assigned check if this caused IRQ */
+ dev = (struct usb_device *)qh_bulk.dev_ptr;
+ /* Flush cache now that hardware updated DATA and TDs/QHs */
+ if (!leon3_snooping_avail)
+ sparc_dcache_flush_all();
+ usb_get_td_status(&tmp_td[0], dev); /* update status */
+ if (!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
+ qh_bulk.dev_ptr = 0;
+ }
+ }
+}
+
+/* check the interrupt chain, ubdate the status of the appropriate device,
+ * call the appropriate irqhandler and reactivate the TD if the irqhandler
+ * returns with 1
+ */
+void usb_check_int_chain(void)
+{
+ int i, res;
+ unsigned long link, status;
+ struct usb_device *dev;
+ uhci_td_t *td, *prevtd;
+
+ for (i = 0; i < 8; i++) {
+ prevtd = &td_int[i]; /* the first previous td is the skeleton td */
+ link = swap_32(READ32(&td_int[i].link)) & 0xfffffff0; /* next in chain */
+ td = (uhci_td_t *) link; /* assign it */
+ /* all interrupt TDs are finally linked to the td_int[0].
+ * so we process all until we find the td_int[0].
+ * if int0 chain points to a QH, we're also done
+ */
+ while (((i > 0) && (link != (unsigned long)&td_int[0])) ||
+ ((i == 0)
+ && !(swap_32(READ32(&td->link)) & UHCI_PTR_QH))) {
+ /* check if a device is assigned with this td */
+ status = swap_32(READ32(&td->status));
+ if ((td->dev_ptr != 0L) && !(status & TD_CTRL_ACTIVE)) {
+ /* td is not active and a device is assigned -> call irqhandler */
+ dev = (struct usb_device *)td->dev_ptr;
+ dev->irq_act_len = ((status & 0x7FF) == 0x7FF) ? 0 : (status & 0x7FF) + 1; /* transfered length */
+ dev->irq_status = usb_uhci_td_stat(status); /* get status */
+ res = dev->irq_handle(dev); /* call irqhandler */
+ if (res == 1) {
+ /* reactivate */
+ status |= TD_CTRL_ACTIVE;
+ td->status = swap_32(status);
+ prevtd = td; /* previous td = this td */
+ } else {
+ prevtd->link = READ32(&td->link); /* link previous td directly to the nex td -> unlinked */
+ /* remove device pointer */
+ td->dev_ptr = 0L;
+ }
+ } /* if we call the irq handler */
+ link = swap_32(READ32(&td->link)) & 0xfffffff0; /* next in chain */
+ td = (uhci_td_t *) link; /* assign it */
+ } /* process all td in this int chain */
+ } /* next interrupt chain */
+}
+
+/* usb interrupt service routine.
+ */
+void handle_usb_interrupt(void)
+{
+ unsigned short status;
+ static int error = 0;
+
+ /*
+ * Read the interrupt status, and write it back to clear the
+ * interrupt cause
+ */
+
+ status = in16r(usb_base_addr + USBSTS);
+
+ if (!status) /* shared interrupt, not mine */
+ return;
+ if (status != 1) {
+ /* remove host controller halted state */
+ if ((status & (USBSTS_HCPE | USBSTS_HCH)) ==
+ (USBSTS_HCPE | USBSTS_HCH)) {
+ /* Stop due to bug in driver, or hardware */
+ out16r(usb_base_addr + USBSTS, status);
+ out16r(usb_base_addr + USBCMD,
+ USBCMD_HCRESET | USBCMD_GRESET);
+ printf
+ ("GRUSB: HW detected error(s) in USB Descriptors (STS: 0x%x)\n",
+ status);
+ usb_show_td(8);
+ return;
+ } else if ((status & 0x20)
+ && ((in16r(usb_base_addr + USBCMD) & USBCMD_RS) ==
+ 0)) {
+ if (error < 10) {
+ out16r(usb_base_addr + USBCMD,
+ USBCMD_RS | in16r(usb_base_addr +
+ USBCMD));
+ error++;
+ }
+ } else
+ error = 0;
+ }
+ usb_check_int_chain(); /* call interrupt handlers for int tds */
+ usb_check_skel(); /* call completion handler for common transfer routines */
+ out16r(usb_base_addr + USBSTS, status);
+}
+
+/* init uhci
+ */
+int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
+{
+ unsigned char temp;
+ ambapp_ahbdev ahbdev;
+
+ /* Find GRUSB core using AMBA Plug&Play information */
+ if (ambapp_ahbslv_first(VENDOR_GAISLER, GAISLER_UHCI, &ahbdev) != 1) {
+ printf("USB UHCI: Failed to find GRUSB controller\n");
+ return -1;
+ }
+ usb_base_addr = ahbdev.address[0];
+ grusb_irq = ahbdev.irq;
+ /*
+ usb_base_addr = 0xfffa0000;
+ grusb_irq = 10;
+ */
+#ifdef USB_UHCI_DEBUG
+ grusb_show_regs();
+#endif
+ memset(td_int, 0, sizeof(td_int));
+ memset(tmp_td, 0, sizeof(tmp_td));
+ memset(tmp_int_td, 0, sizeof(tmp_int_td));
+ memset(&qh_cntrl, 0, sizeof(qh_cntrl));
+ memset(&qh_end, 0, sizeof(qh_end));
+ memset(&td_last, 0, sizeof(td_last));
+
+ irq_free_handler(grusb_irq);
+ USB_UHCI_PRINTF("GRUSB: at 0x%lx irq %d\n", usb_base_addr, grusb_irq);
+ rh.devnum = 0;
+ usb_init_skel();
+ reset_hc();
+ start_hc();
+ irq_install_handler(grusb_irq,
+ (interrupt_handler_t *) handle_usb_interrupt, NULL);
+ return 0;
+}
+
+/* stop uhci
+ */
+int usb_lowlevel_stop(int index)
+{
+ if (grusb_irq == -1)
+ return 1;
+ irq_free_handler(grusb_irq);
+ reset_hc();
+ grusb_irq = -1;
+ return 0;
+}
+
+/*******************************************************************************************
+ * Virtual Root Hub
+ * Since the uhci does not have a real HUB, we simulate one ;-)
+ */
+#undef USB_RH_DEBUG
+
+#ifdef USB_RH_DEBUG
+#define USB_RH_PRINTF(fmt,args...) printf (fmt ,##args)
+static void usb_display_wValue(unsigned short wValue, unsigned short wIndex);
+static void usb_display_Req(unsigned short req);
+#else
+#define USB_RH_PRINTF(fmt,args...)
+static void usb_display_wValue(unsigned short wValue, unsigned short wIndex)
+{
+}
+static void usb_display_Req(unsigned short req)
+{
+}
+#endif
+
+#define WANT_USB_ROOT_HUB_HUB_DES
+#include <usbroothubdes.h>
+#undef WANT_USB_ROOT_HUB_HUB_DES
+
+/*
+ * Root Hub Control Pipe (interrupt Pipes are not supported)
+ */
+
+int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int transfer_len, struct devrequest *cmd)
+{
+ void *data = buffer;
+ int leni = transfer_len;
+ int len = 0;
+ int status = 0;
+ int stat = 0;
+ int i;
+
+ unsigned short cstatus;
+
+ unsigned short bmRType_bReq;
+ unsigned short wValue;
+ unsigned short wIndex;
+ unsigned short wLength;
+
+ if (usb_pipeint(pipe)) {
+ printf("Root-Hub submit IRQ: NOT implemented\n");
+ return 0;
+ }
+ bmRType_bReq = cmd->requesttype | cmd->request << 8;
+ wValue = swap_16(cmd->value);
+ wIndex = swap_16(cmd->index);
+ wLength = swap_16(cmd->length);
+ usb_display_Req(bmRType_bReq);
+ for (i = 0; i < 8; i++)
+ rh.c_p_r[i] = 0;
+ USB_RH_PRINTF("Root-Hub: adr: %2x cmd(%1x): %02x%02x %04x %04x %04x\n",
+ dev->devnum, 8, cmd->requesttype, cmd->request, wValue,
+ wIndex, wLength);
+
+ switch (bmRType_bReq) {
+ /* Request Destination:
+ without flags: Device,
+ RH_INTERFACE: interface,
+ RH_ENDPOINT: endpoint,
+ RH_CLASS means HUB here,
+ RH_OTHER | RH_CLASS almost ever means HUB_PORT here
+ */
+
+ case RH_GET_STATUS:
+ *(unsigned short *)data = swap_16(1);
+ len = 2;
+ break;
+ case RH_GET_STATUS | RH_INTERFACE:
+ *(unsigned short *)data = swap_16(0);
+ len = 2;
+ break;
+ case RH_GET_STATUS | RH_ENDPOINT:
+ *(unsigned short *)data = swap_16(0);
+ len = 2;
+ break;
+ case RH_GET_STATUS | RH_CLASS:
+ *(unsigned long *)data = swap_32(0);
+ len = 4;
+ break; /* hub power ** */
+ case RH_GET_STATUS | RH_OTHER | RH_CLASS:
+
+ status = in16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1));
+ cstatus = ((status & USBPORTSC_CSC) >> (1 - 0)) |
+ ((status & USBPORTSC_PEC) >> (3 - 1)) |
+ (rh.c_p_r[wIndex - 1] << (0 + 4));
+ status = (status & USBPORTSC_CCS) | ((status & USBPORTSC_PE) >> (2 - 1)) | ((status & USBPORTSC_SUSP) >> (12 - 2)) | ((status & USBPORTSC_PR) >> (9 - 4)) | (1 << 8) | /* power on ** */
+ ((status & USBPORTSC_LSDA) << (-8 + 9));
+
+ *(unsigned short *)data = swap_16(status);
+ *(unsigned short *)(data + 2) = swap_16(cstatus);
+ len = 4;
+ break;
+ case RH_CLEAR_FEATURE | RH_ENDPOINT:
+ switch (wValue) {
+ case (RH_ENDPOINT_STALL):
+ len = 0;
+ break;
+ }
+ break;
+
+ case RH_CLEAR_FEATURE | RH_CLASS:
+ switch (wValue) {
+ case (RH_C_HUB_OVER_CURRENT):
+ len = 0; /* hub power over current ** */
+ break;
+ }
+ break;
+
+ case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
+ usb_display_wValue(wValue, wIndex);
+ switch (wValue) {
+ case (RH_PORT_ENABLE):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) & ~USBPORTSC_PE;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_PORT_SUSPEND):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) & ~USBPORTSC_SUSP;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_PORT_POWER):
+ len = 0; /* port power ** */
+ break;
+ case (RH_C_PORT_CONNECTION):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) | USBPORTSC_CSC;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_C_PORT_ENABLE):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) | USBPORTSC_PEC;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_C_PORT_SUSPEND):
+/*** WR_RH_PORTSTAT(RH_PS_PSSC); */
+ len = 0;
+ break;
+ case (RH_C_PORT_OVER_CURRENT):
+ len = 0;
+ break;
+ case (RH_C_PORT_RESET):
+ rh.c_p_r[wIndex - 1] = 0;
+ len = 0;
+ break;
+ }
+ break;
+ case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
+ usb_display_wValue(wValue, wIndex);
+ switch (wValue) {
+ case (RH_PORT_SUSPEND):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) | USBPORTSC_SUSP;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_PORT_RESET):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) | USBPORTSC_PR;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ mdelay(10);
+ status = (status & 0xfff5) & ~USBPORTSC_PR;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ udelay(10);
+ status = (status & 0xfff5) | USBPORTSC_PE;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ mdelay(10);
+ status = (status & 0xfff5) | 0xa;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_PORT_POWER):
+ len = 0; /* port power ** */
+ break;
+ case (RH_PORT_ENABLE):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) | USBPORTSC_PE;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ }
+ break;
+
+ case RH_SET_ADDRESS:
+ rh.devnum = wValue;
+ len = 0;
+ break;
+ case RH_GET_DESCRIPTOR:
+ switch ((wValue & 0xff00) >> 8) {
+ case (0x01): /* device descriptor */
+ i = sizeof(root_hub_config_des);
+ status = i > wLength ? wLength : i;
+ len = leni > status ? status : leni;
+ memcpy(data, root_hub_dev_des, len);
+ break;
+ case (0x02): /* configuration descriptor */
+ i = sizeof(root_hub_config_des);
+ status = i > wLength ? wLength : i;
+ len = leni > status ? status : leni;
+ memcpy(data, root_hub_config_des, len);
+ break;
+ case (0x03): /*string descriptors */
+ if (wValue == 0x0300) {
+ i = sizeof(root_hub_str_index0);
+ status = i > wLength ? wLength : i;
+ len = leni > status ? status : leni;
+ memcpy(data, root_hub_str_index0, len);
+ break;
+ }
+ if (wValue == 0x0301) {
+ i = sizeof(root_hub_str_index1);
+ status = i > wLength ? wLength : i;
+ len = leni > status ? status : leni;
+ memcpy(data, root_hub_str_index1, len);
+ break;
+ }
+ stat = USB_ST_STALLED;
+ }
+ break;
+
+ case RH_GET_DESCRIPTOR | RH_CLASS:
+ root_hub_hub_des[2] = 2;
+ i = sizeof(root_hub_hub_des);
+ status = i > wLength ? wLength : i;
+ len = leni > status ? status : leni;
+ memcpy(data, root_hub_hub_des, len);
+ break;
+ case RH_GET_CONFIGURATION:
+ *(unsigned char *)data = 0x01;
+ len = 1;
+ break;
+ case RH_SET_CONFIGURATION:
+ len = 0;
+ break;
+ default:
+ stat = USB_ST_STALLED;
+ }
+ USB_RH_PRINTF("Root-Hub stat %lx port1: %x port2: %x\n\n", stat,
+ in16r(usb_base_addr + USBPORTSC1),
+ in16r(usb_base_addr + USBPORTSC2));
+ dev->act_len = len;
+ dev->status = stat;
+ return stat;
+
+}
+
+/********************************************************************************
+ * Some Debug Routines
+ */
+
+#ifdef USB_RH_DEBUG
+
+static void usb_display_Req(unsigned short req)
+{
+ USB_RH_PRINTF("- Root-Hub Request: ");
+ switch (req) {
+ case RH_GET_STATUS:
+ USB_RH_PRINTF("Get Status ");
+ break;
+ case RH_GET_STATUS | RH_INTERFACE:
+ USB_RH_PRINTF("Get Status Interface ");
+ break;
+ case RH_GET_STATUS | RH_ENDPOINT:
+ USB_RH_PRINTF("Get Status Endpoint ");
+ break;
+ case RH_GET_STATUS | RH_CLASS:
+ USB_RH_PRINTF("Get Status Class");
+ break; /* hub power ** */
+ case RH_GET_STATUS | RH_OTHER | RH_CLASS:
+ USB_RH_PRINTF("Get Status Class Others");
+ break;
+ case RH_CLEAR_FEATURE | RH_ENDPOINT:
+ USB_RH_PRINTF("Clear Feature Endpoint ");
+ break;
+ case RH_CLEAR_FEATURE | RH_CLASS:
+ USB_RH_PRINTF("Clear Feature Class ");
+ break;
+ case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
+ USB_RH_PRINTF("Clear Feature Other Class ");
+ break;
+ case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
+ USB_RH_PRINTF("Set Feature Other Class ");
+ break;
+ case RH_SET_ADDRESS:
+ USB_RH_PRINTF("Set Address ");
+ break;
+ case RH_GET_DESCRIPTOR:
+ USB_RH_PRINTF("Get Descriptor ");
+ break;
+ case RH_GET_DESCRIPTOR | RH_CLASS:
+ USB_RH_PRINTF("Get Descriptor Class ");
+ break;
+ case RH_GET_CONFIGURATION:
+ USB_RH_PRINTF("Get Configuration ");
+ break;
+ case RH_SET_CONFIGURATION:
+ USB_RH_PRINTF("Get Configuration ");
+ break;
+ default:
+ USB_RH_PRINTF("****UNKNOWN**** 0x%04X ", req);
+ }
+ USB_RH_PRINTF("\n");
+
+}
+
+static void usb_display_wValue(unsigned short wValue, unsigned short wIndex)
+{
+ switch (wValue) {
+ case (RH_PORT_ENABLE):
+ USB_RH_PRINTF("Root-Hub: Enable Port %d\n", wIndex);
+ break;
+ case (RH_PORT_SUSPEND):
+ USB_RH_PRINTF("Root-Hub: Suspend Port %d\n", wIndex);
+ break;
+ case (RH_PORT_POWER):
+ USB_RH_PRINTF("Root-Hub: Port Power %d\n", wIndex);
+ break;
+ case (RH_C_PORT_CONNECTION):
+ USB_RH_PRINTF("Root-Hub: C Port Connection Port %d\n", wIndex);
+ break;
+ case (RH_C_PORT_ENABLE):
+ USB_RH_PRINTF("Root-Hub: C Port Enable Port %d\n", wIndex);
+ break;
+ case (RH_C_PORT_SUSPEND):
+ USB_RH_PRINTF("Root-Hub: C Port Suspend Port %d\n", wIndex);
+ break;
+ case (RH_C_PORT_OVER_CURRENT):
+ USB_RH_PRINTF("Root-Hub: C Port Over Current Port %d\n",
+ wIndex);
+ break;
+ case (RH_C_PORT_RESET):
+ USB_RH_PRINTF("Root-Hub: C Port reset Port %d\n", wIndex);
+ break;
+ default:
+ USB_RH_PRINTF("Root-Hub: unknown %x %x\n", wValue, wIndex);
+ break;
+ }
+}
+
+#endif
+
+/*#ifdef USB_UHCI_DEBUG*/
+
+static int usb_display_td(uhci_td_t * td)
+{
+ unsigned long tmp;
+ int valid;
+
+ printf("TD at %p:\n", td);
+
+ tmp = swap_32(READ32(&td->link));
+ printf("Link points to 0x%08lX, %s first, %s, %s\n", tmp & 0xfffffff0,
+ ((tmp & 0x4) == 0x4) ? "Depth" : "Breath",
+ ((tmp & 0x2) == 0x2) ? "QH" : "TD",
+ ((tmp & 0x1) == 0x1) ? "invalid" : "valid");
+ valid = ((tmp & 0x1) == 0x0);
+ tmp = swap_32(READ32(&td->status));
+ printf
+ (" %s %ld Errors %s %s %s \n %s %s %s %s %s %s\n Len 0x%lX\n",
+ (((tmp >> 29) & 0x1) == 0x1) ? "SPD Enable" : "SPD Disable",
+ ((tmp >> 28) & 0x3),
+ (((tmp >> 26) & 0x1) == 0x1) ? "Low Speed" : "Full Speed",
+ (((tmp >> 25) & 0x1) == 0x1) ? "ISO " : "",
+ (((tmp >> 24) & 0x1) == 0x1) ? "IOC " : "",
+ (((tmp >> 23) & 0x1) == 0x1) ? "Active " : "Inactive ",
+ (((tmp >> 22) & 0x1) == 0x1) ? "Stalled" : "",
+ (((tmp >> 21) & 0x1) == 0x1) ? "Data Buffer Error" : "",
+ (((tmp >> 20) & 0x1) == 0x1) ? "Babble" : "",
+ (((tmp >> 19) & 0x1) == 0x1) ? "NAK" : "",
+ (((tmp >> 18) & 0x1) == 0x1) ? "Bitstuff Error" : "",
+ (tmp & 0x7ff));
+ tmp = swap_32(READ32(&td->info));
+ printf(" MaxLen 0x%lX\n", ((tmp >> 21) & 0x7FF));
+ printf(" %sEndpoint 0x%lX Dev Addr 0x%lX PID 0x%lX\n",
+ ((tmp >> 19) & 0x1) == 0x1 ? "TOGGLE " : "", ((tmp >> 15) & 0xF),
+ ((tmp >> 8) & 0x7F), tmp & 0xFF);
+ tmp = swap_32(READ32(&td->buffer));
+ printf(" Buffer 0x%08lX\n", tmp);
+ printf(" DEV %08lX\n", td->dev_ptr);
+ return valid;
+}
+
+void usb_show_td(int max)
+{
+ int i;
+ if (max > 0) {
+ for (i = 0; i < max; i++) {
+ usb_display_td(&tmp_td[i]);
+ }
+ } else {
+ i = 0;
+ do {
+ printf("tmp_td[%d]\n", i);
+ } while (usb_display_td(&tmp_td[i++]));
+ }
+}
+
+void grusb_show_regs(void)
+{
+ unsigned int tmp;
+
+ tmp = in16r(usb_base_addr + USBCMD);
+ printf(" USBCMD: 0x%04x\n", tmp);
+ tmp = in16r(usb_base_addr + USBSTS);
+ printf(" USBSTS: 0x%04x\n", tmp);
+ tmp = in16r(usb_base_addr + USBINTR);
+ printf(" USBINTR: 0x%04x\n", tmp);
+ tmp = in16r(usb_base_addr + USBFRNUM);
+ printf(" FRNUM: 0x%04x\n", tmp);
+ tmp = in32r(usb_base_addr + USBFLBASEADD);
+ printf(" FLBASEADD: 0x%08x\n", tmp);
+ tmp = in16r(usb_base_addr + USBSOF);
+ printf(" SOFMOD: 0x%04x\n", tmp);
+ tmp = in16r(usb_base_addr + USBPORTSC1);
+ printf(" PORTSC1: 0x%04x\n", tmp);
+}
+
+/*#endif*/
+#endif /* CONFIG_USB_UHCI */
+
+/* EOF */
Code Review / kvmfornfv.git / blobdiff