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-rw-r--r--payloads/libpayload/drivers/usb/TODO22
-rw-r--r--payloads/libpayload/drivers/usb/uhci.c507
-rw-r--r--payloads/libpayload/drivers/usb/uhci.h124
-rw-r--r--payloads/libpayload/drivers/usb/uhci_rh.c182
-rw-r--r--payloads/libpayload/drivers/usb/usb.c350
-rw-r--r--payloads/libpayload/drivers/usb/usb.h224
-rw-r--r--payloads/libpayload/drivers/usb/usb_dev.c55
-rw-r--r--payloads/libpayload/drivers/usb/usbdisk.h51
-rw-r--r--payloads/libpayload/drivers/usb/usbhid.c137
-rw-r--r--payloads/libpayload/drivers/usb/usbhub.c158
-rw-r--r--payloads/libpayload/drivers/usb/usbinit.c120
-rw-r--r--payloads/libpayload/drivers/usb/usbmsc.c397
-rw-r--r--payloads/libpayload/drivers/usb/usbmsc.h47
13 files changed, 2374 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/usb/TODO b/payloads/libpayload/drivers/usb/TODO
new file mode 100644
index 0000000000..1dfc9d40ab
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/TODO
@@ -0,0 +1,22 @@
+- handle error conditions
+- handle disconnect more gracefully (ie. make calling layer aware that the device doesn't exist somehow)
+- usbhub:
+ - proper client enumeration (esp. detach)
+ - change detection
+ - power management
+- handle interrupts more cleverly:
+ create a new queue for the interrupt with a couple of TD sequences,
+ - each ending with "breadth first" flag
+ - linked as a chain
+ add that queue at the appropriate times in front of the default structure so the max latency is honored
+ - only one intr chain per framelist item, so it must be arranged appropriately
+ reads from usb device just look at "invalidated" tds and the results they got
+ handled tds get reactivated as a ring structure
+ - added as child of the oldest td
+ - queue header already dropped the td, so no issue there
+
+ this setup ensures that:
+ - the max latency of the device is honored
+ - the client knows the right order of the data
+ - there is no need for an interrupt handler
+ - but must be polled at least max latency * num tds times -> more tds = less time pressure
diff --git a/payloads/libpayload/drivers/usb/uhci.c b/payloads/libpayload/drivers/usb/uhci.c
new file mode 100644
index 0000000000..a558db842c
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/uhci.c
@@ -0,0 +1,507 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "usb.h"
+#include "uhci.h"
+#include <arch/virtual.h>
+
+static void uhci_start (hci_t *controller);
+static void uhci_stop (hci_t *controller);
+static void uhci_reset (hci_t *controller);
+static void uhci_shutdown (hci_t *controller);
+static int uhci_packet (usbdev_t *dev, int endp, int pid, int toggle,
+ int length, u8 *data);
+static int uhci_bulk (endpoint_t *ep, int size, u8 *data, int finalize);
+static int uhci_control (usbdev_t *dev, pid_t dir, int drlen, void *devreq,
+ int dalen, u8 *data);
+
+#if 0
+/* dump uhci */
+static void
+uhci_dump (hci_t *controller)
+{
+ printf ("dump:\nUSBCMD: %x\n", uhci_reg_read16 (controller, USBCMD));
+ printf ("USBSTS: %x\n", uhci_reg_read16 (controller, USBSTS));
+ printf ("USBINTR: %x\n", uhci_reg_read16 (controller, USBINTR));
+ printf ("FRNUM: %x\n", uhci_reg_read16 (controller, FRNUM));
+ printf ("FLBASEADD: %x\n", uhci_reg_read32 (controller, FLBASEADD));
+ printf ("SOFMOD: %x\n", uhci_reg_read8 (controller, SOFMOD));
+ printf ("PORTSC1: %x\n", uhci_reg_read16 (controller, PORTSC1));
+ printf ("PORTSC2: %x\n", uhci_reg_read16 (controller, PORTSC2));
+}
+#endif
+
+static void
+td_dump (td_t *td)
+{
+ printf ("%x packet (at %lx) to %x.%x failed\n", td->pid,
+ virt_to_phys (td), td->dev_addr, td->endp);
+ printf ("td (counter at %x) returns: ", td->counter);
+ printf (" bitstuff err: %x, ", td->status_bitstuff_err);
+ printf (" CRC err: %x, ", td->status_crc_err);
+ printf (" NAK rcvd: %x, ", td->status_nakrcvd);
+ printf (" Babble: %x, ", td->status_babble);
+ printf (" Data Buffer err: %x, ", td->status_databuf_err);
+ printf (" Stalled: %x, ", td->status_stalled);
+ printf (" Active: %x\n", td->status_active);
+ if (td->status_babble)
+ printf (" Babble because of %s\n",
+ td->status_bitstuff_err ? "host" : "device");
+ if (td->status_active)
+ printf (" still active - timeout?\n");
+}
+
+static void
+uhci_reset (hci_t *controller)
+{
+ /* reset */
+ uhci_reg_write16 (controller, USBCMD, 4);
+ mdelay (50);
+ uhci_reg_write16 (controller, USBCMD, 0);
+ mdelay (10);
+ uhci_reg_write16 (controller, USBCMD, 2);
+ while ((uhci_reg_read16 (controller, USBCMD) & 2) != 0)
+ mdelay (1);
+
+ uhci_reg_write32 (controller, FLBASEADD,
+ (u32) virt_to_phys (UHCI_INST (controller)->
+ framelistptr));
+ //printf ("framelist at %p\n",UHCI_INST(controller)->framelistptr);
+
+ /* disable irqs */
+ uhci_reg_write16 (controller, USBINTR, 0);
+
+ /* reset framelist index */
+ uhci_reg_write16 (controller, FRNUM, 0);
+
+ uhci_reg_mask16 (controller, USBCMD, ~0, 0xc0); // max packets, configure flag
+
+ uhci_start (controller);
+}
+
+hci_t *
+uhci_init (pcidev_t addr)
+{
+ int i;
+ hci_t *controller = new_controller ();
+
+ controller->instance = malloc (sizeof (uhci_t));
+ controller->start = uhci_start;
+ controller->stop = uhci_stop;
+ controller->reset = uhci_reset;
+ controller->shutdown = uhci_shutdown;
+ controller->packet = uhci_packet;
+ controller->bulk = uhci_bulk;
+ controller->control = uhci_control;
+ UHCI_INST (controller)->roothub = &(controller->devices[0]);
+
+ controller->bus_address = addr;
+ controller->reg_base = pci_read_config32 (controller->bus_address, 0x20) & ~1; /* ~1 clears the register type indicator that is set to 1 for IO space */
+
+ /* kill legacy support handler */
+ uhci_stop (controller);
+ mdelay (1);
+ uhci_reg_write16 (controller, USBSTS, 0x3f);
+ pci_write_config32 (controller->bus_address, 0xc0, 0x8f00);
+
+ UHCI_INST (controller)->framelistptr = memalign (0x1000, 1024 * sizeof (flistp_t *)); /* 4kb aligned to 4kb */
+ memset (UHCI_INST (controller)->framelistptr, 0,
+ 1024 * sizeof (flistp_t));
+
+ UHCI_INST (controller)->qh_intr = memalign (16, sizeof (qh_t));
+ UHCI_INST (controller)->qh_data = memalign (16, sizeof (qh_t));
+ UHCI_INST (controller)->qh_last = memalign (16, sizeof (qh_t));
+
+ UHCI_INST (controller)->qh_intr->headlinkptr.ptr =
+ virt_to_phys (UHCI_INST (controller)->qh_data);
+ UHCI_INST (controller)->qh_intr->headlinkptr.queue_head = 1;
+ UHCI_INST (controller)->qh_intr->elementlinkptr.ptr = 0;
+ UHCI_INST (controller)->qh_intr->elementlinkptr.terminate = 1;
+
+ UHCI_INST (controller)->qh_data->headlinkptr.ptr =
+ virt_to_phys (UHCI_INST (controller)->qh_last);
+ UHCI_INST (controller)->qh_data->headlinkptr.queue_head = 1;
+ UHCI_INST (controller)->qh_data->elementlinkptr.ptr = 0;
+ UHCI_INST (controller)->qh_data->elementlinkptr.terminate = 1;
+
+ UHCI_INST (controller)->qh_last->headlinkptr.ptr = 0;
+ UHCI_INST (controller)->qh_last->headlinkptr.terminate = 1;
+ UHCI_INST (controller)->qh_last->elementlinkptr.ptr = 0;
+ UHCI_INST (controller)->qh_last->elementlinkptr.terminate = 1;
+
+ for (i = 0; i < 1024; i++) {
+ UHCI_INST (controller)->framelistptr[i].ptr =
+ virt_to_phys (UHCI_INST (controller)->qh_intr);
+ UHCI_INST (controller)->framelistptr[i].terminate = 0;
+ UHCI_INST (controller)->framelistptr[i].queue_head = 1;
+ }
+ for (i = 1; i < 128; i++) {
+ init_device_entry (controller, i);
+ }
+ controller->devices[0].controller = controller;
+ controller->devices[0].init = uhci_rh_init;
+ controller->devices[0].init (&controller->devices[0]);
+ uhci_reset (controller);
+ return controller;
+}
+
+static void
+uhci_shutdown (hci_t *controller)
+{
+ if (controller == 0)
+ return;
+ detach_controller (controller);
+ UHCI_INST (controller)->roothub->destroy (UHCI_INST (controller)->
+ roothub);
+ uhci_reg_mask16 (controller, USBCMD, 0, 0); // stop work
+ free (UHCI_INST (controller)->framelistptr);
+ free (UHCI_INST (controller)->qh_intr);
+ free (UHCI_INST (controller)->qh_data);
+ free (UHCI_INST (controller)->qh_last);
+ free (UHCI_INST (controller));
+ free (controller);
+}
+
+static void
+uhci_start (hci_t *controller)
+{
+ uhci_reg_mask16 (controller, USBCMD, ~0, 1); // start work on schedule
+}
+
+static void
+uhci_stop (hci_t *controller)
+{
+ uhci_reg_mask16 (controller, USBCMD, ~1, 0); // stop work on schedule
+}
+
+#define GET_TD(x) ((void*)(((unsigned int)(x))&~0xf))
+
+static td_t *
+wait_for_completed_qh (hci_t *controller, qh_t *qh)
+{
+ int timeout = 1000; /* max 30 ms. */
+ void *current = GET_TD (qh->elementlinkptr.ptr);
+ while ((qh->elementlinkptr.terminate == 0) && (timeout-- > 0)) {
+ if (current != GET_TD (qh->elementlinkptr.ptr)) {
+ current = GET_TD (qh->elementlinkptr.ptr);
+ timeout = 1000;
+ }
+ uhci_reg_mask16 (controller, USBSTS, ~0, 0); // clear resettable registers
+ udelay (30);
+ }
+ return (GET_TD (qh->elementlinkptr.ptr) ==
+ 0) ? 0 : GET_TD (phys_to_virt (qh->elementlinkptr.ptr));
+}
+
+static void
+wait_for_completed_td (hci_t *controller, td_t *td)
+{
+ int timeout = 10000;
+ while ((td->status_active == 1)
+ && ((uhci_reg_read16 (controller, USBSTS) & 2) == 0)
+ && (timeout-- > 0)) {
+ uhci_reg_mask16 (controller, USBSTS, ~0, 0); // clear resettable registers
+ udelay (10);
+ }
+}
+
+static int
+maxlen (int size)
+{
+ return (size - 1) & 0x7ff;
+}
+
+static int
+min (int a, int b)
+{
+ if (a < b)
+ return a;
+ else
+ return b;
+}
+
+static int
+uhci_control (usbdev_t *dev, pid_t dir, int drlen, void *devreq, int dalen,
+ unsigned char *data)
+{
+ int endp = 0; /* this is control: always 0 */
+ int mlen = dev->endpoints[0].maxpacketsize;
+ int count = (2 + (dalen + mlen - 1) / mlen);
+ unsigned short req = ((unsigned short *) devreq)[0];
+ int i;
+ td_t *tds = memalign (16, sizeof (td_t) * count);
+ memset (tds, 0, sizeof (td_t) * count);
+ count--; /* to compensate for 0-indexed array */
+ for (i = 0; i < count; i++) {
+ tds[i].ptr = virt_to_phys (&tds[i + 1]);
+ tds[i].depth_first = 1;
+ tds[i].terminate = 0;
+ }
+ tds[count].ptr = 0;
+ tds[count].depth_first = 1;
+ tds[count].terminate = 1;
+
+ tds[0].pid = SETUP;
+ tds[0].dev_addr = dev->address;
+ tds[0].endp = endp;
+ tds[0].maxlen = maxlen (drlen);
+ tds[0].counter = 3;
+ tds[0].data_toggle = 0;
+ tds[0].lowspeed = dev->lowspeed;
+ tds[0].bufptr = virt_to_phys (devreq);
+ tds[0].status_active = 1;
+
+ int toggle = 1;
+ for (i = 1; i < count; i++) {
+ tds[i].pid = dir;
+ tds[i].dev_addr = dev->address;
+ tds[i].endp = endp;
+ tds[i].maxlen = maxlen (min (mlen, dalen));
+ tds[i].counter = 3;
+ tds[i].data_toggle = toggle;
+ tds[i].lowspeed = dev->lowspeed;
+ tds[i].bufptr = virt_to_phys (data);
+ tds[i].status_active = 1;
+ toggle ^= 1;
+ dalen -= mlen;
+ data += mlen;
+ }
+
+ tds[count].pid = (dir == OUT) ? IN : OUT;
+ tds[count].dev_addr = dev->address;
+ tds[count].endp = endp;
+ tds[count].maxlen = maxlen (0);
+ tds[count].counter = 0; /* as per linux 2.4.10 */
+ tds[count].data_toggle = 1;
+ tds[count].lowspeed = dev->lowspeed, tds[count].bufptr = 0;
+ tds[count].status_active = 1;
+ UHCI_INST (dev->controller)->qh_data->elementlinkptr.ptr =
+ virt_to_phys (tds);
+ UHCI_INST (dev->controller)->qh_data->elementlinkptr.queue_head = 0;
+ UHCI_INST (dev->controller)->qh_data->elementlinkptr.terminate = 0;
+ td_t *td = wait_for_completed_qh (dev->controller,
+ UHCI_INST (dev->controller)->
+ qh_data);
+ int result;
+ if (td == 0) {
+ result = 0;
+ } else {
+ printf ("control packet, req %x\n", req);
+ td_dump (td);
+ result = 1;
+ }
+ free (tds);
+ return result;
+}
+
+static int
+uhci_packet (usbdev_t *dev, int endp, int pid, int toggle, int length,
+ unsigned char *data)
+{
+ static td_t *td = 0;
+ if (td == 0)
+ td = memalign (16, sizeof (td_t));
+
+ memset (td, 0, sizeof (td_t));
+ td->ptr = 0;
+ td->terminate = 1;
+ td->queue_head = 0;
+
+ td->pid = pid;
+ td->dev_addr = dev->address;
+ td->endp = endp & 0xf;
+ td->maxlen = maxlen (length);
+ if (pid == SETUP)
+ td->counter = 3;
+ else
+ td->counter = 0;
+ td->data_toggle = toggle & 1;
+ td->lowspeed = dev->lowspeed;
+ td->bufptr = virt_to_phys (data);
+
+ td->status_active = 1;
+
+ UHCI_INST (dev->controller)->qh_data->elementlinkptr.ptr =
+ virt_to_phys (td);
+ UHCI_INST (dev->controller)->qh_data->elementlinkptr.queue_head = 0;
+ UHCI_INST (dev->controller)->qh_data->elementlinkptr.terminate = 0;
+ wait_for_completed_td (dev->controller, td);
+ if ((td->status & 0x7f) == 0) {
+ //printf("successfully sent a %x packet to %x.%x\n",pid, dev->address,endp);
+ // success
+ return 0;
+ } else {
+ td_dump (td);
+ return 1;
+ }
+}
+
+static td_t *
+create_schedule (int numpackets)
+{
+ if (numpackets == 0)
+ return 0;
+ td_t *tds = memalign (16, sizeof (td_t) * numpackets);
+ memset (tds, 0, sizeof (td_t) * numpackets);
+ int i;
+ for (i = 0; i < numpackets; i++) {
+ tds[i].ptr = virt_to_phys (&tds[i + 1]);
+ tds[i].terminate = 0;
+ tds[i].queue_head = 0;
+ tds[i].depth_first = 1;
+ }
+ tds[numpackets - 1].ptr = 0;
+ tds[numpackets - 1].terminate = 1;
+ tds[numpackets - 1].queue_head = 0;
+ tds[numpackets - 1].depth_first = 0;
+ return tds;
+}
+
+static void
+fill_schedule (td_t *td, endpoint_t *ep, int length, unsigned char *data,
+ int *toggle)
+{
+ td->pid = ep->direction;
+ td->dev_addr = ep->dev->address;
+ td->endp = ep->endpoint & 0xf;
+ td->maxlen = maxlen (length);
+ if (ep->direction == SETUP)
+ td->counter = 3;
+ else
+ td->counter = 0;
+ td->data_toggle = *toggle & 1;
+ td->lowspeed = ep->dev->lowspeed;
+ td->bufptr = virt_to_phys (data);
+
+ td->status_active = 1;
+ *toggle ^= 1;
+}
+
+static int
+run_schedule (usbdev_t *dev, td_t *td)
+{
+ UHCI_INST (dev->controller)->qh_data->elementlinkptr.ptr =
+ virt_to_phys (td);
+ UHCI_INST (dev->controller)->qh_data->elementlinkptr.queue_head = 0;
+ UHCI_INST (dev->controller)->qh_data->elementlinkptr.terminate = 0;
+ td = wait_for_completed_qh (dev->controller,
+ UHCI_INST (dev->controller)->qh_data);
+ if (td == 0) {
+ return 0;
+ } else {
+ td_dump (td);
+ return 1;
+ }
+}
+
+/* finalize == 1: if data is of packet aligned size, add a zero length packet */
+static int
+uhci_bulk (endpoint_t *ep, int size, u8 *data, int finalize)
+{
+ int maxpsize = ep->maxpacketsize;
+ if (maxpsize == 0)
+ fatal ("MaxPacketSize == 0!!!");
+ int numpackets = (size + maxpsize - 1 + finalize) / maxpsize;
+ if (numpackets == 0)
+ return 0;
+ td_t *tds = create_schedule (numpackets);
+ int i = 0, toggle = ep->toggle;
+ while ((size > 0) || ((size == 0) && (finalize != 0))) {
+ fill_schedule (&tds[i], ep, min (size, maxpsize), data,
+ &toggle);
+ i++;
+ data += maxpsize;
+ size -= maxpsize;
+ }
+ if (run_schedule (ep->dev, tds) == 1) {
+ clear_stall (ep);
+ free (tds);
+ return 1;
+ }
+ ep->toggle = toggle;
+ free (tds);
+ return 0;
+}
+
+void
+uhci_reg_write32 (hci_t *ctrl, usbreg reg, u32 value)
+{
+ outl (value, ctrl->reg_base + reg);
+}
+
+u32
+uhci_reg_read32 (hci_t *ctrl, usbreg reg)
+{
+ return inl (ctrl->reg_base + reg);
+}
+
+void
+uhci_reg_write16 (hci_t *ctrl, usbreg reg, u16 value)
+{
+ outw (value, ctrl->reg_base + reg);
+}
+
+u16
+uhci_reg_read16 (hci_t *ctrl, usbreg reg)
+{
+ return inw (ctrl->reg_base + reg);
+}
+
+void
+uhci_reg_write8 (hci_t *ctrl, usbreg reg, u8 value)
+{
+ outb (value, ctrl->reg_base + reg);
+}
+
+u8
+uhci_reg_read8 (hci_t *ctrl, usbreg reg)
+{
+ return inb (ctrl->reg_base + reg);
+}
+
+void
+uhci_reg_mask32 (hci_t *ctrl, usbreg reg, u32 andmask, u32 ormask)
+{
+ uhci_reg_write32 (ctrl, reg,
+ (uhci_reg_read32 (ctrl, reg) & andmask) | ormask);
+}
+
+void
+uhci_reg_mask16 (hci_t *ctrl, usbreg reg, u16 andmask, u16 ormask)
+{
+ uhci_reg_write16 (ctrl, reg,
+ (uhci_reg_read16 (ctrl, reg) & andmask) | ormask);
+}
+
+void
+uhci_reg_mask8 (hci_t *ctrl, usbreg reg, u8 andmask, u8 ormask)
+{
+ uhci_reg_write8 (ctrl, reg,
+ (uhci_reg_read8 (ctrl, reg) & andmask) | ormask);
+}
diff --git a/payloads/libpayload/drivers/usb/uhci.h b/payloads/libpayload/drivers/usb/uhci.h
new file mode 100644
index 0000000000..f5727c4e61
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/uhci.h
@@ -0,0 +1,124 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef __UHCI_H
+#define __UHCI_H
+
+#include <pci.h>
+#include "usb.h"
+
+typedef union {
+ struct {
+ unsigned long terminate:1;
+ unsigned long queue_head:1;
+ unsigned long:2;
+ unsigned long ptr_part:28;
+ };
+ u32 ptr;
+} __attribute__ ((packed)) flistp_t;
+
+typedef struct {
+ union {
+ struct {
+ unsigned long terminate:1;
+ unsigned long queue_head:1;
+ unsigned long depth_first:1;
+ unsigned long:29;
+ } __attribute__ ((packed));
+ u32 ptr;
+ } __attribute__ ((packed));
+
+ volatile unsigned long actlen:11;
+ volatile unsigned long:5;
+ union {
+ struct {
+ unsigned long:1; // bit 0
+ unsigned long status_bitstuff_err:1;
+ unsigned long status_crc_err:1;
+ unsigned long status_nakrcvd:1;
+ unsigned long status_babble:1;
+ unsigned long status_databuf_err:1;
+ unsigned long status_stalled:1;
+ unsigned long status_active:1; // bit 7
+ } __attribute__ ((packed));
+ unsigned char status;
+ } __attribute__ ((packed));
+ volatile unsigned long ioc:1; /* interrupt on complete */
+ volatile unsigned long isochronous:1;
+ volatile unsigned long lowspeed:1;
+ volatile unsigned long counter:2;
+ volatile unsigned long shortpck:1;
+ volatile unsigned long:2;
+
+ unsigned long pid:8;
+ unsigned long dev_addr:7;
+ unsigned long endp:4;
+ unsigned long data_toggle:1;
+ unsigned long:1;
+ unsigned long maxlen:11;
+
+ u32 bufptr;
+
+} __attribute__ ((packed))
+ td_t;
+
+ typedef struct {
+ flistp_t headlinkptr;
+ volatile flistp_t elementlinkptr;
+ } __attribute__ ((packed))
+ qh_t;
+
+ typedef enum { USBCMD = 0, USBSTS = 2, USBINTR = 4, FRNUM =
+ 6, FLBASEADD = 8, SOFMOD = 0xc, PORTSC1 = 0x10, PORTSC2 =
+ 0x12
+ } usbreg;
+
+ void uhci_reg_write32 (hci_t *ctrl, usbreg reg, u32 value);
+ u32 uhci_reg_read32 (hci_t *ctrl, usbreg reg);
+ void uhci_reg_write16 (hci_t *ctrl, usbreg reg, u16 value);
+ u16 uhci_reg_read16 (hci_t *ctrl, usbreg reg);
+ void uhci_reg_write8 (hci_t *ctrl, usbreg reg, u8 value);
+ u8 uhci_reg_read8 (hci_t *ctrl, usbreg reg);
+ void uhci_reg_mask32 (hci_t *ctrl, usbreg reg, u32 andmask, u32 ormask);
+ void uhci_reg_mask16 (hci_t *ctrl, usbreg reg, u16 andmask, u16 ormask);
+ void uhci_reg_mask8 (hci_t *ctrl, usbreg reg, u8 andmask, u8 ormask);
+
+ typedef struct uhci {
+ flistp_t *framelistptr;
+ qh_t *qh_intr, *qh_data, *qh_last;
+ usbdev_t *roothub;
+ } uhci_t;
+
+#define UHCI_INST(controller) ((uhci_t*)((controller)->instance))
+
+ hci_t *uhci_init (pcidev_t addr);
+
+ void uhci_rh_init (usbdev_t *dev);
+
+#endif
diff --git a/payloads/libpayload/drivers/usb/uhci_rh.c b/payloads/libpayload/drivers/usb/uhci_rh.c
new file mode 100644
index 0000000000..e703e53f21
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/uhci_rh.c
@@ -0,0 +1,182 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <libpayload.h>
+#include "uhci.h"
+
+typedef struct {
+ int port[2];
+} rh_inst_t;
+
+#define RH_INST(dev) ((rh_inst_t*)(dev)->data)
+
+static void
+uhci_rh_enable_port (usbdev_t *dev, int port)
+{
+ u16 value;
+ hci_t *controller = dev->controller;
+ if (port == 1)
+ port = PORTSC1;
+ else
+ port = PORTSC2;
+ uhci_reg_mask16 (controller, port, ~(1 << 12), 0); /* wakeup */
+
+ uhci_reg_mask16 (controller, port, ~0, 1 << 9); /* reset */
+ mdelay (30); // >10ms
+ uhci_reg_mask16 (controller, port, ~(1 << 9), 0);
+ mdelay (1); // >5.3us per spec, <3ms because some devices make trouble
+
+ uhci_reg_mask16 (controller, port, ~0, 1 << 2); /* enable */
+ do {
+ value = uhci_reg_read16 (controller, port);
+ mdelay (1);
+ } while (((value & (1 << 2)) == 0) && (value & 0x01));
+}
+
+/* disable root hub */
+static void
+uhci_rh_disable_port (usbdev_t *dev, int port)
+{
+ hci_t *controller = dev->controller;
+ port = PORTSC2;
+ if (port == 1)
+ port = PORTSC1;
+ uhci_reg_mask16 (controller, port, ~4, 0);
+ int value;
+ do {
+ value = uhci_reg_read16 (controller, port);
+ mdelay (1);
+ } while ((value & (1 << 2)) != 0);
+}
+
+static void
+uhci_rh_scanport (usbdev_t *dev, int port)
+{
+ int portsc, offset;
+ if (port == 1) {
+ portsc = PORTSC1;
+ offset = 0;
+ } else if (port == 2) {
+ portsc = PORTSC2;
+ offset = 1;
+ } else
+ return;
+ int devno = RH_INST (dev)->port[offset];
+ if (devno != -1) {
+ dev->controller->devices[devno].destroy (&dev->controller->
+ devices[devno]);
+ init_device_entry (dev->controller, devno);
+ RH_INST (dev)->port[offset] = -1;
+ }
+ uhci_reg_mask16 (dev->controller, portsc, ~0, (1 << 3) | (1 << 2)); // clear port state change, enable port
+
+ if ((uhci_reg_read16 (dev->controller, portsc) & 1) != 0) {
+ int newdev;
+ usbdev_t *newdev_t;
+ // device attached
+
+ uhci_rh_disable_port (dev, port);
+ uhci_rh_enable_port (dev, port);
+
+ int lowspeed =
+ (uhci_reg_read16 (dev->controller, portsc) >> 8) & 1;
+ printf ("%sspeed device\n", (lowspeed == 1) ? "low" : "full");
+
+ newdev = set_address (dev->controller, lowspeed);
+ if (newdev == -1)
+ return;
+ newdev_t = &dev->controller->devices[newdev];
+ RH_INST (dev)->port[offset] = newdev;
+ newdev_t->address = newdev;
+ newdev_t->hub = dev->address;
+ newdev_t->port = portsc;
+ // determine responsible driver
+ newdev_t->init (newdev_t);
+ }
+}
+
+static int
+uhci_rh_report_port_changes (usbdev_t *dev)
+{
+ int stored, real;
+
+ stored = (RH_INST (dev)->port[0] == -1);
+ real = ((uhci_reg_read16 (dev->controller, PORTSC1) & 1) == 0);
+ if (stored != real)
+ return 1;
+
+ stored = (RH_INST (dev)->port[1] == -1);
+ real = ((uhci_reg_read16 (dev->controller, PORTSC2) & 1) == 0);
+ if (stored != real)
+ return 2;
+
+// maybe detach+attach happened between two scans?
+ if ((uhci_reg_read16 (dev->controller, PORTSC1) & 2) > 0)
+ return 1;
+ if ((uhci_reg_read16 (dev->controller, PORTSC2) & 2) > 0)
+ return 2;
+
+// no change
+ return -1;
+}
+
+static void
+uhci_rh_destroy (usbdev_t *dev)
+{
+ uhci_rh_disable_port (dev, 1);
+ uhci_rh_disable_port (dev, 2);
+ free (RH_INST (dev));
+}
+
+static void
+uhci_rh_poll (usbdev_t *dev)
+{
+ int port;
+ while ((port = uhci_rh_report_port_changes (dev)) != -1)
+ uhci_rh_scanport (dev, port);
+}
+
+void
+uhci_rh_init (usbdev_t *dev)
+{
+ dev->destroy = uhci_rh_destroy;
+ dev->poll = uhci_rh_poll;
+
+ uhci_rh_enable_port (dev, 1);
+ uhci_rh_enable_port (dev, 2);
+ dev->data = malloc (sizeof (rh_inst_t));
+ RH_INST (dev)->port[0] = -1;
+ RH_INST (dev)->port[1] = -1;
+
+ /* we can set them here because a root hub _really_ shouldn't
+ appear elsewhere */
+ dev->address = 0;
+ dev->hub = -1;
+ dev->port = -1;
+}
diff --git a/payloads/libpayload/drivers/usb/usb.c b/payloads/libpayload/drivers/usb/usb.c
new file mode 100644
index 0000000000..fc4de87dd7
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/usb.c
@@ -0,0 +1,350 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+#include "usb.h"
+
+hci_t *usb_hcs = 0;
+
+hci_t *
+new_controller ()
+{
+ hci_t *controller = malloc (sizeof (hci_t));
+
+ /* atomic */
+ controller->next = usb_hcs;
+ usb_hcs = controller;
+ /* atomic end */
+
+ return controller;
+}
+
+void
+detach_controller (hci_t *controller)
+{
+ if (controller == 0)
+ return;
+ if (usb_hcs == controller) {
+ usb_hcs = controller->next;
+ } else {
+ hci_t *it = usb_hcs;
+ while (it != 0) {
+ if (it->next == controller) {
+ it->next = controller->next;
+ return;
+ }
+ }
+ }
+}
+
+/**
+ * Polls all hubs on all USB controllers, to find out about device changes
+ */
+void
+usb_poll ()
+{
+ if (usb_hcs == 0)
+ return;
+ hci_t *controller = usb_hcs;
+ while (controller != 0) {
+ int i;
+ for (i = 0; i < 128; i++) {
+ if (controller->devices[i].address != -1) {
+ controller->devices[i].poll (&controller->
+ devices[i]);
+ }
+ }
+ controller = controller->next;
+ }
+}
+
+void
+init_device_entry (hci_t *controller, int i)
+{
+ controller->devices[i].controller = controller;
+ controller->devices[i].address = -1;
+ controller->devices[i].hub = -1;
+ controller->devices[i].port = -1;
+ controller->devices[i].init = usb_nop_init;
+ controller->devices[i].init (&controller->devices[i]);
+}
+
+void
+set_feature (usbdev_t *dev, int endp, int feature, int rtype)
+{
+ dev_req_t dr;
+
+ dr.bmRequestType = rtype;
+ dr.data_dir = host_to_device;
+ dr.bRequest = SET_FEATURE;
+ dr.wValue = feature;
+ dr.wIndex = endp;
+ dr.wLength = 0;
+ dev->controller->control (dev, OUT, sizeof (dr), &dr, 0, 0);
+}
+
+void
+get_status (usbdev_t *dev, int intf, int rtype, int len, void *data)
+{
+ dev_req_t dr;
+
+ dr.bmRequestType = rtype;
+ dr.data_dir = device_to_host;
+ dr.bRequest = GET_STATUS;
+ dr.wValue = 0;
+ dr.wIndex = intf;
+ dr.wLength = len;
+ dev->controller->control (dev, IN, sizeof (dr), &dr, len, data);
+}
+
+u8 *
+get_descriptor (usbdev_t *dev, unsigned char bmRequestType, int descType,
+ int descIdx, int langID)
+{
+ u8 buf[8];
+ u8 *result;
+ dev_req_t dr;
+ int size;
+
+ dr.bmRequestType = bmRequestType;
+ dr.data_dir = device_to_host; // always like this for descriptors
+ dr.bRequest = GET_DESCRIPTOR;
+ dr.wValue = (descType << 8) | descIdx;
+ dr.wIndex = langID;
+ dr.wLength = 8;
+ if (dev->controller->control (dev, IN, sizeof (dr), &dr, 8, buf)) {
+ printf ("getting descriptor size (type %x) failed\n",
+ descType);
+ }
+
+ if (descType == 1) {
+ device_descriptor_t *dd = (device_descriptor_t *) buf;
+ printf ("maxPacketSize0: %x\n", dd->bMaxPacketSize0);
+ if (dd->bMaxPacketSize0 != 0)
+ dev->endpoints[0].maxpacketsize = dd->bMaxPacketSize0;
+ }
+
+ /* special case for configuration descriptors: they carry all their
+ subsequent descriptors with them, and keep the entire size at a
+ different location */
+ size = buf[0];
+ if (buf[1] == 2) {
+ int realsize = ((unsigned short *) (buf + 2))[0];
+ size = realsize;
+ }
+ result = malloc (size);
+ memset (result, 0, size);
+ dr.wLength = size;
+ if (dev->controller->
+ control (dev, IN, sizeof (dr), &dr, size, result)) {
+ printf ("getting descriptor (type %x, size %x) failed\n",
+ descType, size);
+ }
+
+ return result;
+}
+
+void
+set_configuration (usbdev_t *dev)
+{
+ dev_req_t dr;
+
+ dr.bmRequestType = 0;
+ dr.bRequest = SET_CONFIGURATION;
+ dr.wValue = dev->configuration[5];
+ dr.wIndex = 0;
+ dr.wLength = 0;
+ dev->controller->control (dev, OUT, sizeof (dr), &dr, 0, 0);
+}
+
+int
+clear_stall (endpoint_t *ep)
+{
+ usbdev_t *dev = ep->dev;
+ int endp = ep->endpoint;
+ dev_req_t dr;
+
+ dr.bmRequestType = 0;
+ if (endp != 0) {
+ dr.req_recp = endp_recp;
+ }
+ dr.bRequest = CLEAR_FEATURE;
+ dr.wValue = ENDPOINT_HALT;
+ dr.wIndex = endp;
+ dr.wLength = 0;
+ dev->controller->control (dev, OUT, sizeof (dr), &dr, 0, 0);
+ return 0;
+}
+
+/* returns free address or -1 */
+static int
+get_free_address (hci_t *controller)
+{
+ int i;
+ for (i = 1; i < 128; i++) {
+ if (controller->devices[i].address != i)
+ return i;
+ }
+ printf ("no free address found\n");
+ return -1; // no free address
+}
+
+int
+set_address (hci_t *controller, int lowspeed)
+{
+ int adr = get_free_address (controller); // address to set
+ dev_req_t dr;
+ configuration_descriptor_t *cd;
+ device_descriptor_t *dd;
+
+ memset (&dr, 0, sizeof (dr));
+ dr.data_dir = host_to_device;
+ dr.req_type = standard_type;
+ dr.req_recp = dev_recp;
+ dr.bRequest = SET_ADDRESS;
+ dr.wValue = adr;
+ dr.wIndex = 0;
+ dr.wLength = 0;
+
+ usbdev_t *dev = &controller->devices[adr];
+ // dummy values for registering the address
+ dev->address = 0;
+ dev->lowspeed = lowspeed;
+ dev->endpoints[0].dev = dev;
+ dev->endpoints[0].endpoint = 0;
+ dev->endpoints[0].maxpacketsize = 8;
+ dev->endpoints[0].toggle = 0;
+ dev->endpoints[0].direction = SETUP;
+ mdelay (50);
+ if (dev->controller->control (dev, OUT, sizeof (dr), &dr, 0, 0)) {
+ printf ("set_address failed\n");
+ return -1;
+ }
+ mdelay (50);
+ dev->address = adr;
+ dev->descriptor =
+ get_descriptor (dev,
+ gen_bmRequestType (device_to_host,
+ standard_type, dev_recp),
+ 1, 0, 0);
+ dd = (device_descriptor_t *) dev->descriptor;
+ printf ("device version: %x.%x\n", dd->bcdUSB >> 8,
+ dd->bcdUSB & 0xff);
+ printf ("device has %x configurations\n", dd->bNumConfigurations);
+ if (dd->bNumConfigurations == 0) {
+ /* device isn't usable */
+ printf ("no usable configuration!\n");
+ dev->address = 0;
+ return -1;
+ }
+ dev->configuration =
+ get_descriptor (dev,
+ gen_bmRequestType (device_to_host,
+ standard_type, dev_recp),
+ 2, 0, 0);
+ cd = (configuration_descriptor_t *) dev->configuration;
+ set_configuration (dev);
+ interface_descriptor_t *interface =
+ (interface_descriptor_t *) (((char *) cd) + cd->bLength);
+ {
+ int i;
+ int num = cd->bNumInterfaces;
+ interface_descriptor_t *current = interface;
+ printf ("device has %x interfaces\n", num);
+ num = (num > 5) ? 5 : num;
+ for (i = 0; i < num; i++) {
+ int j;
+ printf (" #%x has %x endpoints, interface %x:%x, protocol %x\n", current->bInterfaceNumber, current->bNumEndpoints, current->bInterfaceClass, current->bInterfaceSubClass, current->bInterfaceProtocol);
+ endpoint_descriptor_t *endp =
+ (endpoint_descriptor_t *) (((char *) current)
+ +
+ current->bLength);
+ if (interface->bInterfaceClass == 0x3)
+ endp = (endpoint_descriptor_t *) (((char *) endp) + ((char *) endp)[0]); // ignore HID descriptor
+ memset (dev->endpoints, 0, sizeof (dev->endpoints));
+ dev->num_endp = 1; // 0 always exists
+ dev->endpoints[0].dev = dev;
+ dev->endpoints[0].maxpacketsize = dd->bMaxPacketSize0;
+ dev->endpoints[0].direction = SETUP;
+ dev->endpoints[0].type = CONTROL;
+ for (j = 1; j <= current->bNumEndpoints; j++) {
+ static const char *transfertypes[4] =
+ { "control", "isochronous", "bulk",
+ "interrupt"
+ };
+ printf (" #%x: Endpoint %x (%s), max packet size %x, type %s\n", j, endp->bEndpointAddress & 0x7f, ((endp->bEndpointAddress & 0x80) != 0) ? "in" : "out", endp->wMaxPacketSize, transfertypes[endp->bmAttributes]);
+ endpoint_t *ep =
+ &dev->endpoints[dev->num_endp++];
+ ep->dev = dev;
+ ep->endpoint = endp->bEndpointAddress;
+ ep->toggle = 0;
+ ep->maxpacketsize = endp->wMaxPacketSize;
+ ep->direction =
+ ((endp->bEndpointAddress & 0x80) ==
+ 0) ? OUT : IN;
+ ep->type = endp->bmAttributes;
+ endp = (endpoint_descriptor_t
+ *) (((char *) endp) + endp->bLength);
+ }
+ current = (interface_descriptor_t *) endp;
+ }
+ }
+ int class = dd->bDeviceClass;
+ if (class == 0)
+ class = interface->bInterfaceClass;
+
+ enum { hid_device = 0x3, msc_device = 0x8, hub_device = 0x9 };
+
+ printf ("device of class %x found\n", class);
+ if (class == hub_device) {
+ printf ("hub found\n");
+#ifdef CONFIG_USB_HUB
+ controller->devices[adr].init = usb_hub_init;
+#else
+ printf ("support not compiled in\n");
+#endif
+ }
+ if (class == hid_device) {
+ printf ("HID found\n");
+#ifdef CONFIG_USB_HID
+ controller->devices[adr].init = usb_hid_init;
+#else
+ printf ("support not compiled in\n");
+#endif
+ }
+ if (class == msc_device) {
+ printf ("MSC found\n");
+#ifdef CONFIG_USB_MSC
+ controller->devices[adr].init = usb_msc_init;
+#else
+ printf ("support not compiled in\n");
+#endif
+ }
+ return adr;
+}
diff --git a/payloads/libpayload/drivers/usb/usb.h b/payloads/libpayload/drivers/usb/usb.h
new file mode 100644
index 0000000000..1500b75a1e
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/usb.h
@@ -0,0 +1,224 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef __USB_H
+#define __USB_H
+#include <libpayload.h>
+#include <pci.h>
+
+typedef enum { host_to_device = 0, device_to_host = 1 } dev_req_dir;
+typedef enum { standard_type = 0, class_type = 1, vendor_type =
+ 2, reserved_type = 3
+} dev_req_type;
+typedef enum { dev_recp = 0, iface_recp = 1, endp_recp = 2, other_recp = 3
+} dev_req_recp;
+
+typedef enum {
+ GET_STATUS = 0,
+ CLEAR_FEATURE = 1,
+ SET_FEATURE = 3,
+ SET_ADDRESS = 5,
+ GET_DESCRIPTOR = 6,
+ SET_DESCRIPTOR = 7,
+ GET_CONFIGURATION = 8,
+ SET_CONFIGURATION = 9,
+ GET_INTERFACE = 10,
+ SET_INTERFACE = 11,
+ SYNCH_FRAME = 12
+} bRequest_Codes;
+
+typedef enum {
+ ENDPOINT_HALT = 0,
+ DEVICE_REMOTE_WAKEUP = 1,
+ TEST_MODE = 2
+} feature_selectors;
+
+typedef struct {
+ union {
+ struct {
+ dev_req_recp req_recp:5;
+ dev_req_type req_type:2;
+ dev_req_dir data_dir:1;
+ } __attribute__ ((packed));
+ unsigned char bmRequestType;
+ } __attribute__ ((packed));
+ unsigned char bRequest;
+ unsigned short wValue;
+ unsigned short wIndex;
+ unsigned short wLength;
+} __attribute__ ((packed)) dev_req_t;
+
+struct usbdev_hc;
+typedef struct usbdev_hc hci_t;
+
+struct usbdev;
+typedef struct usbdev usbdev_t;
+
+typedef enum { SETUP = 0x2d, IN = 0x69, OUT = 0xe1 } pid_t;
+typedef enum { CONTROL = 0, ISOCHRONOUS = 1, BULK = 2, INTERRUPT = 3
+} endpoint_type;
+
+typedef struct {
+ usbdev_t *dev;
+ int endpoint;
+ pid_t direction;
+ int toggle;
+ int maxpacketsize;
+ endpoint_type type;
+} endpoint_t;
+
+
+struct usbdev {
+ hci_t *controller;
+ endpoint_t endpoints[32];
+ int num_endp;
+ int address; // usb address
+ int hub; // hub, device is attached to
+ int port; // port where device is attached
+ int lowspeed; // 1 if lowspeed device
+ void *data;
+ u8 *descriptor;
+ u8 *configuration;
+ void (*init) (usbdev_t *dev);
+ void (*destroy) (usbdev_t *dev);
+ void (*poll) (usbdev_t *dev);
+};
+
+struct usbdev_hc {
+ struct usbdev_hc *next;
+ pcidev_t bus_address;
+ u32 reg_base;
+ usbdev_t devices[128]; // dev 0 is root hub, 127 is last addressable
+ void (*start) (hci_t *controller);
+ void (*stop) (hci_t *controller);
+ void (*reset) (hci_t *controller);
+ void (*shutdown) (hci_t *controller);
+ int (*packet) (usbdev_t *dev, int endp, int pid, int toggle,
+ int length, u8 *data);
+ int (*bulk) (endpoint_t *ep, int size, u8 *data, int finalize);
+ int (*control) (usbdev_t *dev, pid_t pid, int dr_length,
+ void *devreq, int data_length, u8 *data);
+ void *instance;
+};
+
+typedef struct {
+ unsigned char bDescLength;
+ unsigned char bDescriptorType;
+ unsigned char bNbrPorts;
+ union {
+ struct {
+ unsigned long logicalPowerSwitchingMode:2;
+ unsigned long isCompoundDevice:1;
+ unsigned long overcurrentProtectionMode:2;
+ unsigned long ttThinkTime:2;
+ unsigned long arePortIndicatorsSupported:1;
+ unsigned long:8;
+ } __attribute__ ((packed));
+ unsigned short wHubCharacteristics;
+ } __attribute__ ((packed));
+ unsigned char bPowerOn2PwrGood;
+ unsigned char bHubContrCurrent;
+ char DeviceRemovable[];
+} __attribute__ ((packed)) hub_descriptor_t;
+
+typedef struct {
+ unsigned char bLength;
+ unsigned char bDescriptorType;
+ unsigned short bcdUSB;
+ unsigned char bDeviceClass;
+ unsigned char bDeviceSubClass;
+ unsigned char bDeviceProtocol;
+ unsigned char bMaxPacketSize0;
+ unsigned short idVendor;
+ unsigned short idProduct;
+ unsigned short bcdDevice;
+ unsigned char iManufacturer;
+ unsigned char iProduct;
+ unsigned char iSerialNumber;
+ unsigned char bNumConfigurations;
+} __attribute__ ((packed)) device_descriptor_t;
+
+typedef struct {
+ unsigned char bLength;
+ unsigned char bDescriptorType;
+ unsigned short wTotalLength;
+ unsigned char bNumInterfaces;
+ unsigned char bConfigurationValue;
+ unsigned char iConfiguration;
+ unsigned char bmAttributes;
+ unsigned char bMaxPower;
+} __attribute__ ((packed)) configuration_descriptor_t;
+
+typedef struct {
+ unsigned char bLength;
+ unsigned char bDescriptorType;
+ unsigned char bInterfaceNumber;
+ unsigned char bAlternateSetting;
+ unsigned char bNumEndpoints;
+ unsigned char bInterfaceClass;
+ unsigned char bInterfaceSubClass;
+ unsigned char bInterfaceProtocol;
+ unsigned char iInterface;
+} __attribute__ ((packed)) interface_descriptor_t;
+
+typedef struct {
+ unsigned char bLength;
+ unsigned char bDescriptorType;
+ unsigned char bEndpointAddress;
+ unsigned char bmAttributes;
+ unsigned short wMaxPacketSize;
+ unsigned char bInterval;
+} __attribute__ ((packed)) endpoint_descriptor_t;
+
+hci_t *new_controller (void);
+void detach_controller (hci_t *controller);
+void usb_poll (void);
+void init_device_entry (hci_t *controller, int num);
+
+void set_feature (usbdev_t *dev, int endp, int feature, int rtype);
+void get_status (usbdev_t *dev, int endp, int rtype, int len, void *data);
+int clear_stall (endpoint_t *ep);
+
+void usb_nop_init (usbdev_t *dev);
+void usb_hub_init (usbdev_t *dev);
+void usb_hid_init (usbdev_t *dev);
+void usb_msc_init (usbdev_t *dev);
+
+int set_address (hci_t *controller, int lowspeed);
+
+u8 *get_descriptor (usbdev_t *dev, unsigned char bmRequestType,
+ int descType, int descIdx, int langID);
+
+static inline unsigned char
+gen_bmRequestType (dev_req_dir dir, dev_req_type type, dev_req_recp recp)
+{
+ return (dir << 7) | (type << 5) | recp;
+}
+
+#endif
diff --git a/payloads/libpayload/drivers/usb/usb_dev.c b/payloads/libpayload/drivers/usb/usb_dev.c
new file mode 100644
index 0000000000..0c6a34ca10
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/usb_dev.c
@@ -0,0 +1,55 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "usb.h"
+
+static void
+usb_nop_destroy (usbdev_t *dev)
+{
+ if (dev->descriptor != 0)
+ free (dev->descriptor);
+ usb_nop_init (dev);
+ dev->address = -1;
+ dev->hub = -1;
+ dev->port = -1;
+}
+
+static void
+usb_nop_poll (usbdev_t *dev)
+{
+ return;
+}
+
+void
+usb_nop_init (usbdev_t *dev)
+{
+ dev->descriptor = 0;
+ dev->destroy = usb_nop_destroy;
+ dev->poll = usb_nop_poll;
+}
diff --git a/payloads/libpayload/drivers/usb/usbdisk.h b/payloads/libpayload/drivers/usb/usbdisk.h
new file mode 100644
index 0000000000..3ac24631ac
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/usbdisk.h
@@ -0,0 +1,51 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef __USBDISK_H
+#define __USBDISK_H
+#include "usb.h"
+
+/**
+ * To be implemented by libpayload-client. It's called by the USB stack
+ * when a new USB storage device is found, so the client has the chance
+ * to know about it.
+ *
+ * @param dev descriptor for the USB storage device
+ */
+void usbdisk_create (usbdev_t *dev);
+
+/**
+ * To be implemented by libpayload-client. It's called by the USB stack
+ * when it finds out that a USB storage device is removed.
+ *
+ * @param dev descriptor for the USB storage device
+ */
+void usbdisk_remove (usbdev_t *dev);
+
+#endif
diff --git a/payloads/libpayload/drivers/usb/usbhid.c b/payloads/libpayload/drivers/usb/usbhid.c
new file mode 100644
index 0000000000..414cc07cdb
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/usbhid.c
@@ -0,0 +1,137 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "usb.h"
+
+enum { hid_subclass_none = 0, hid_subclass_boot = 1 };
+enum { hid_proto_boot = 0, hid_proto_report = 1 };
+enum { hid_boot_proto_none = 0, hid_boot_proto_keyboard =
+ 1, hid_boot_proto_mouse = 2
+};
+static const char *boot_protos[3] = { "(none)", "keyboard", "mouse" };
+enum { GET_REPORT = 0x1, GET_IDLE = 0x2, GET_PROTOCOL = 0x3, SET_REPORT =
+ 0x9, SET_IDLE = 0xa, SET_PROTOCOL = 0xb
+};
+
+static void
+usb_hid_destroy (usbdev_t *dev)
+{
+}
+
+int keypress;
+char keymap[256] = {
+ -1, -1, -1, -1, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k',
+ 'l',
+ 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ '1', '2',
+ '3', '4', '5', '6', '7', '8', '9', '0', '\n', TERM_ESC,
+ TERM_BACKSPACE, TERM_TAB, ' ', '-', '=', '[',
+ ']', '\\', -1, ';', '\'', '`', ',', '.', '/', -1, -1, -1, -1, -1, -1,
+ -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, TERM_HOME, TERM_PPAGE, -1,
+ TERM_END, TERM_NPAGE, TERM_RIGHT,
+ TERM_LEFT, TERM_DOWN, TERM_UP, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+};
+
+
+static void
+usb_hid_poll (usbdev_t *dev)
+{
+ char buf[8];
+ static int toggle = 0;
+ // hardcode to endpoint 1, 8 bytes
+ dev->controller->packet (dev, 1, IN, toggle, 8, buf);
+ toggle ^= 1;
+ // FIXME: manage buf[0]=special keys, too
+ keypress = keymap[buf[2]];
+ if ((keypress == -1) && (buf[2] != 0)) {
+ printf ("%x %x %x %x %x %x %x %x\n", buf[0], buf[1], buf[2],
+ buf[3], buf[4], buf[5], buf[6], buf[7]);
+ }
+}
+
+int (*oldhook) (void);
+
+int
+hookfunc (void)
+{
+ int key;
+ if (oldhook != 0)
+ key = oldhook ();
+ if (key == -1)
+ key = keypress;
+ return key;
+}
+
+void
+usb_hid_init (usbdev_t *dev)
+{
+
+ configuration_descriptor_t *cd = dev->configuration;
+ interface_descriptor_t *interface = ((char *) cd) + cd->bLength;
+
+ if (interface->bInterfaceSubClass == hid_subclass_boot) {
+ printf (" supports boot interface..\n");
+ printf (" it's a %s\n",
+ boot_protos[interface->bInterfaceProtocol]);
+ if (interface->bInterfaceProtocol == hid_boot_proto_keyboard) {
+ printf (" activating...\n");
+ dev_req_t dr;
+ // set_protocol(hid_proto_boot)
+ dr.data_dir = host_to_device;
+ dr.req_type = class_type;
+ dr.req_recp = iface_recp;
+ dr.bRequest = SET_PROTOCOL;
+ dr.wValue = hid_proto_boot;
+ dr.wIndex = interface->bInterfaceNumber;
+ dr.wLength = 0;
+ dev->controller->control (dev, OUT,
+ sizeof (dev_req_t), &dr, 0,
+ 0);
+
+ // only add here, because we only support boot-keyboard HID devices
+ // FIXME: make this a real console input driver instead, once the API is there
+ dev->destroy = usb_hid_destroy;
+ dev->poll = usb_hid_poll;
+ oldhook = getkey_hook;
+ getkey_hook = hookfunc;
+ }
+ }
+}
diff --git a/payloads/libpayload/drivers/usb/usbhub.c b/payloads/libpayload/drivers/usb/usbhub.c
new file mode 100644
index 0000000000..04c04c383a
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/usbhub.c
@@ -0,0 +1,158 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "usb.h"
+
+// assume that host_to_device is overwritten if necessary
+#define DR_PORT gen_bmRequestType(host_to_device, class_type, other_recp)
+#define PORT_RESET 0x4
+#define PORT_POWER 0x8
+
+typedef struct {
+ int num_ports;
+ int *ports;
+ hub_descriptor_t *descriptor;
+} usbhub_inst_t;
+
+#define HUB_INST(dev) ((usbhub_inst_t*)(dev)->data)
+
+static void
+usb_hub_destroy (usbdev_t *dev)
+{
+ free (HUB_INST (dev)->ports);
+ free (HUB_INST (dev)->descriptor);
+ free (HUB_INST (dev));
+}
+
+static void
+usb_hub_scanport (usbdev_t *dev, int port)
+{
+ int newdev;
+ unsigned short buf[2];
+ usbdev_t *newdev_t;
+
+ get_status (dev, port, DR_PORT, 4, buf);
+ int portstatus = ((buf[0] & 1) == 0);
+ int datastatus = (HUB_INST (dev)->ports[port] == -1);
+ if (portstatus == datastatus)
+ return; // no change - FIXME: read right fields for that test
+
+ if (!datastatus) {
+ int devno = HUB_INST (dev)->ports[port];
+ if (devno == -1)
+ fatal ("FATAL: illegal devno!\n");
+ dev->controller->devices[devno].destroy (&dev->controller->
+ devices[devno]);
+ init_device_entry (dev->controller, devno);
+ HUB_INST (dev)->ports[port] = -1;
+ return;
+ }
+
+ set_feature (dev, port, PORT_RESET, DR_PORT);
+ mdelay (20);
+
+ get_status (dev, port, DR_PORT, 4, buf);
+ int lowspeed = (buf[0] >> 9) & 1;
+
+ newdev = set_address (dev->controller, lowspeed);
+ if (newdev == -1)
+ return;
+ newdev_t = &dev->controller->devices[newdev];
+
+ HUB_INST (dev)->ports[port] = newdev;
+ newdev_t->address = newdev;
+ newdev_t->hub = dev->address;
+ newdev_t->port = port;
+ // determine responsible driver
+ newdev_t->init (newdev_t);
+}
+
+static int
+usb_hub_report_port_changes (usbdev_t *dev)
+{
+ int port;
+ unsigned short buf[2];
+ for (port = 1; port <= HUB_INST (dev)->num_ports; port++) {
+ get_status (dev, port, DR_PORT, 4, buf);
+ // FIXME: proper change detection
+ int portstatus = ((buf[0] & 1) == 0);
+ int datastatus = (HUB_INST (dev)->ports[port] == -1);
+ if (portstatus != datastatus)
+ return port;
+ }
+
+// no change
+ return -1;
+}
+
+static void
+usb_hub_enable_port (usbdev_t *dev, int port)
+{
+ set_feature (dev, port, PORT_POWER, DR_PORT);
+ mdelay (20);
+}
+
+#if 0
+static void
+usb_hub_disable_port (usbdev_t *dev, int port)
+{
+}
+#endif
+
+static void
+usb_hub_poll (usbdev_t *dev)
+{
+ int port;
+ while ((port = usb_hub_report_port_changes (dev)) != -1)
+ usb_hub_scanport (dev, port);
+}
+
+void
+usb_hub_init (usbdev_t *dev)
+{
+ int i;
+ dev->destroy = usb_hub_destroy;
+ dev->poll = usb_hub_poll;
+
+ dev->data = malloc (sizeof (usbhub_inst_t));
+
+ HUB_INST (dev)->descriptor =
+ (hub_descriptor_t *) get_descriptor (dev,
+ gen_bmRequestType
+ (device_to_host,
+ class_type, dev_recp),
+ 0x29, 0, 0);
+ HUB_INST (dev)->num_ports = HUB_INST (dev)->descriptor->bNbrPorts;
+ HUB_INST (dev)->ports =
+ malloc (sizeof (int) * (HUB_INST (dev)->num_ports + 1));
+ for (i = 1; i <= HUB_INST (dev)->num_ports; i++)
+ HUB_INST (dev)->ports[i] = -1;
+ for (i = 1; i <= HUB_INST (dev)->num_ports; i++)
+ usb_hub_enable_port (dev, i);
+}
diff --git a/payloads/libpayload/drivers/usb/usbinit.c b/payloads/libpayload/drivers/usb/usbinit.c
new file mode 100644
index 0000000000..fe13837c51
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/usbinit.c
@@ -0,0 +1,120 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+#include "usb.h"
+#include "uhci.h"
+#include "usbdisk.h"
+
+/**
+ * Initializes USB controller attached to PCI
+ *
+ * @param bus PCI bus number
+ * @param dev PCI device id at bus
+ * @param func function id of the controller
+ */
+int
+usb_controller_initialize (int bus, int dev, int func)
+{
+ u32 class;
+ u32 devclass;
+ u32 prog_if;
+ pcidev_t addr;
+ u32 pciid;
+
+ addr = PCI_DEV (bus, dev, func);
+ class = pci_read_config32 (addr, 8);
+ pciid = pci_read_config32 (addr, 0);
+
+ devclass = class >> 16;
+ prog_if = (class >> 8) & 0xff;
+
+ /* enable busmaster */
+#define PCI_COMMAND 4
+#define PCI_COMMAND_MASTER 4
+ pci_write_config32 (addr, PCI_COMMAND,
+ pci_read_config32 (addr,
+ PCI_COMMAND) |
+ PCI_COMMAND_MASTER);
+
+ if (devclass == 0xc03) {
+ printf ("%02x:%02x.%x %04x:%04x.%d ", 0, dev, func,
+ pciid >> 16, pciid & 0xFFFF, func);
+ if (prog_if == 0) {
+ printf ("UHCI controller\n");
+#ifdef CONFIG_USB_UHCI
+ uhci_init (addr);
+ usb_poll ();
+ usb_poll ();
+#else
+ printf ("Not supported.\n");
+#endif
+ }
+ if (prog_if == 0x10) {
+ printf ("OHCI controller\n");
+#ifdef CONFIG_USB_OHCI
+ // ohci_init(addr);
+#else
+ printf ("Not supported.\n");
+#endif
+
+ }
+ if (prog_if == 0x20) {
+ printf ("EHCI controller\n");
+#ifdef CONFIG_USB_EHCI
+ // ehci_init(addr);
+#else
+ printf ("Not supported.\n");
+#endif
+
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * Initialize all USB controllers attached to PCI.
+ */
+int
+usb_initialize (void)
+{
+ int bus, dev, func;
+ for (bus = 0; bus < 256; bus++)
+ for (dev = 0; dev < 32; dev++)
+ for (func = 0; func < 8; func++)
+ usb_controller_initialize (bus, dev, func);
+ return 0;
+}
+
+int
+usb_exit (void)
+{
+ return 0;
+}
diff --git a/payloads/libpayload/drivers/usb/usbmsc.c b/payloads/libpayload/drivers/usb/usbmsc.c
new file mode 100644
index 0000000000..cbef585e24
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/usbmsc.c
@@ -0,0 +1,397 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <arch/endian.h>
+#include "usb.h"
+#include "usbmsc.h"
+#include "usbdisk.h"
+
+enum {
+ msc_subclass_rbc = 0x1,
+ msc_subclass_mmc2 = 0x2,
+ msc_subclass_qic157 = 0x3,
+ msc_subclass_ufi = 0x4,
+ msc_subclass_sff8070i = 0x5,
+ msc_subclass_scsitrans = 0x6
+};
+static const char *msc_subclass_strings[7] = {
+ "(none)",
+ "RBC",
+ "MMC-2",
+ "QIC-157",
+ "UFI",
+ "SFF-8070i",
+ "SCSI transparent"
+};
+enum {
+ msc_proto_cbi_wcomp = 0x0,
+ msc_proto_cbi_wocomp = 0x1,
+ msc_proto_bulk_only = 0x50
+};
+static const char *msc_protocol_strings[0x51] = {
+ "Control/Bulk/Interrupt protocol (with command completion interrupt)",
+ "Control/Bulk/Interrupt protocol (with no command completion interrupt)",
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ "Bulk-Only Transport"
+};
+
+
+static void
+usb_msc_destroy (usbdev_t *dev)
+{
+ usbdisk_remove (dev);
+ free (dev->data);
+ dev->data = 0;
+}
+
+static void
+usb_msc_poll (usbdev_t *dev)
+{
+}
+
+const int DEV_RESET = 0xff;
+const int GET_MAX_LUN = 0xfe;
+
+const unsigned int cbw_signature = 0x43425355;
+const unsigned int csw_signature = 0x53425355;
+
+typedef struct {
+ unsigned int dCBWSignature;
+ unsigned int dCBWTag;
+ unsigned int dCBWDataTransferLength;
+ unsigned char bmCBWFlags;
+ unsigned long bCBWLUN:4;
+ unsigned long:4;
+ unsigned long bCBWCBLength:5;
+ unsigned long:3;
+ unsigned char CBWCB[31 - 15];
+} __attribute__ ((packed))
+ cbw_t;
+
+ typedef struct {
+ unsigned int dCSWSignature;
+ unsigned int dCSWTag;
+ unsigned int dCSWDataResidue;
+ unsigned char bCSWStatus;
+ } __attribute__ ((packed))
+ csw_t;
+
+ static void
+ reset_transport (usbdev_t *dev)
+{
+ dev_req_t dr;
+ memset (&dr, 0, sizeof (dr));
+ dr.bmRequestType = 0;
+ dr.data_dir = host_to_device;
+#ifndef QEMU
+ dr.req_type = class_type;
+ dr.req_recp = iface_recp;
+#endif
+ dr.bRequest = DEV_RESET;
+ dr.wValue = 0;
+ dr.wIndex = 0;
+ dr.wLength = 0;
+ dev->controller->control (dev, OUT, sizeof (dr), &dr, 0, 0);
+ clear_stall (MSC_INST (dev)->bulk_in);
+ clear_stall (MSC_INST (dev)->bulk_out);
+}
+
+/* device may stall this command, so beware! */
+static int
+get_max_luns (usbdev_t *dev)
+{
+ unsigned char luns = 75;
+ dev_req_t dr;
+ dr.bmRequestType = 0;
+ dr.data_dir = device_to_host;
+#ifndef QEMU
+ dr.req_type = class_type;
+ dr.req_recp = iface_recp;
+#endif
+ dr.bRequest = GET_MAX_LUN;
+ dr.wValue = 0;
+ dr.wIndex = 0;
+ dr.wLength = 1;
+ if (dev->controller->control (dev, IN, sizeof (dr), &dr, 1, &luns)) {
+ luns = 0; // assume only 1 lun if req fails
+ }
+ return luns;
+}
+
+int tag;
+int lun = 0;
+
+static void
+wrap_cbw (cbw_t *cbw, int datalen, cbw_direction dir, const u8 *cmd,
+ int cmdlen)
+{
+ memset (cbw, 0, sizeof (cbw_t));
+
+ cbw->dCBWSignature = cbw_signature;
+ cbw->dCBWTag = tag++;
+ cbw->bCBWLUN = lun; // static value per device
+
+ cbw->dCBWDataTransferLength = datalen;
+ cbw->bmCBWFlags = dir;
+ memcpy (cbw->CBWCB, cmd, sizeof (cbw->CBWCB));
+ cbw->bCBWCBLength = cmdlen;
+}
+
+static void
+get_csw (endpoint_t *ep, csw_t *csw)
+{
+ ep->dev->controller->bulk (ep, sizeof (csw_t), (u8 *) csw, 1);
+}
+
+static int
+execute_command (usbdev_t *dev, cbw_direction dir, const u8 *cb, int cblen,
+ u8 *buf, int buflen)
+{
+ cbw_t cbw;
+ csw_t csw;
+
+ int always_succeed = 0;
+ if ((cb[0] == 0x1b) && (cb[4] == 1)) { //start command, always succeed
+ always_succeed = 1;
+ }
+ wrap_cbw (&cbw, buflen, dir, cb, cblen);
+ if (dev->controller->
+ bulk (MSC_INST (dev)->bulk_out, sizeof (cbw), (u8 *) &cbw, 0)) {
+ clear_stall (MSC_INST (dev)->bulk_out);
+ return 1;
+ }
+ mdelay (10);
+ if (dir == cbw_direction_data_in) {
+ if (dev->controller->
+ bulk (MSC_INST (dev)->bulk_in, buflen, buf, 0)) {
+ clear_stall (MSC_INST (dev)->bulk_in);
+ return 1;
+ }
+ } else {
+ if (dev->controller->
+ bulk (MSC_INST (dev)->bulk_out, buflen, buf, 0)) {
+ clear_stall (MSC_INST (dev)->bulk_out);
+ return 1;
+ }
+ }
+ get_csw (MSC_INST (dev)->bulk_in, &csw);
+ if (always_succeed == 1) {
+ // return success, regardless of message
+ return 0;
+ }
+ if (csw.bCSWStatus == 2) {
+ // phase error, reset transport
+ reset_transport (dev);
+ return 1;
+ }
+ if (csw.bCSWStatus == 0) {
+ // no error, exit
+ return 0;
+ }
+ // error "check condition" or reserved error
+ return 1;
+}
+
+typedef struct {
+ unsigned char command; //0
+ unsigned char res1; //1
+ unsigned int block; //2-5
+ unsigned char res2; //6
+ unsigned short numblocks; //7-8
+ unsigned char res3; //9 - the block is 10 bytes long
+} __attribute__ ((packed)) cmdblock_t;
+
+typedef struct {
+ unsigned char command; //0
+ unsigned char res1; //1
+ unsigned char res2; //2
+ unsigned char res3; //3
+ unsigned char lun; //4
+ unsigned char res4; //5
+} __attribute__ ((packed)) cmdblock6_t;
+
+
+/**
+ * Reads or writes a number of sequential blocks on a USB storage device.
+ * As it uses the READ(10) SCSI-2 command, it's limited to storage devices
+ * of at most 2TB. It assumes sectors of 512 bytes.
+ *
+ * @param dev device to access
+ * @param start first sector to access
+ * @param n number of sectors to access
+ * @param dir direction of access: cbw_direction_data_in == read, cbw_direction_data_out == write
+ * @param buf buffer to read into or write from. Must be at least n*512 bytes
+ * @return 0 on success, 1 on failure
+ */
+int
+readwrite_blocks (usbdev_t *dev, int start, int n, cbw_direction dir, u8 *buf)
+{
+ cmdblock_t cb;
+ memset (&cb, 0, sizeof (cb));
+ if (dir == cbw_direction_data_in) {
+ // read
+ cb.command = 0x28;
+ } else {
+ // write
+ cb.command = 0x2a;
+ }
+ cb.block = ntohl (start);
+ cb.numblocks = ntohw (n);
+ return execute_command (dev, dir, (u8 *) &cb, sizeof (cb), buf,
+ n * 512);
+}
+
+static int
+test_unit_ready (usbdev_t *dev)
+{
+ cmdblock6_t cb;
+ memset (&cb, 0, sizeof (cb)); // full initialization for T-U-R
+ return execute_command (dev, cbw_direction_data_out, (u8 *) &cb,
+ sizeof (cb), 0, 0);
+}
+
+static int
+spin_up (usbdev_t *dev)
+{
+ cmdblock6_t cb;
+ memset (&cb, 0, sizeof (cb));
+ cb.command = 0x1b;
+ cb.lun = 1;
+ return execute_command (dev, cbw_direction_data_out, (u8 *) &cb,
+ sizeof (cb), 0, 0);
+}
+
+static void
+read_capacity (usbdev_t *dev)
+{
+ cmdblock_t cb;
+ memset (&cb, 0, sizeof (cb));
+ cb.command = 0x25; // read capacity
+ u8 buf[8];
+ int count = 0;
+ while ((count++ < 20)
+ &&
+ (execute_command
+ (dev, cbw_direction_data_in, (u8 *) &cb, sizeof (cb), buf,
+ 8) == 1));
+ if (count >= 20) {
+ // still not successful, assume 2tb in 512byte sectors, which is just the same garbage as any other number, but probably reasonable.
+ printf ("assuming 2TB in 512byte sectors as READ CAPACITY didn't answer.\n");
+ MSC_INST (dev)->numblocks = 0xffffffff;
+ MSC_INST (dev)->blocksize = 512;
+ } else {
+ MSC_INST (dev)->numblocks = ntohl (*(u32 *) buf) + 1;
+ MSC_INST (dev)->blocksize = ntohl (*(u32 *) (buf + 4));
+ }
+ printf (" has %d blocks sized %db\n", MSC_INST (dev)->numblocks,
+ MSC_INST (dev)->blocksize);
+}
+
+void
+usb_msc_init (usbdev_t *dev)
+{
+ int i, timeout;
+
+ dev->destroy = usb_msc_destroy;
+ dev->poll = usb_msc_poll;
+
+ configuration_descriptor_t *cd =
+ (configuration_descriptor_t *) dev->configuration;
+ interface_descriptor_t *interface =
+ (interface_descriptor_t *) (((char *) cd) + cd->bLength);
+
+ printf (" it uses %s command set\n",
+ msc_subclass_strings[interface->bInterfaceSubClass]);
+ printf (" it uses %s protocol\n",
+ msc_protocol_strings[interface->bInterfaceProtocol]);
+
+ if ((interface->bInterfaceProtocol != 0x50)
+ || (interface->bInterfaceSubClass != 6)) {
+ /* Other protocols, such as ATAPI don't seem to be very popular. looks like ATAPI would be really easy to add, if necessary. */
+ printf (" Only SCSI over Bulk is supported.\n");
+ return;
+ }
+
+ dev->data = malloc (sizeof (usbmsc_inst_t));
+ MSC_INST (dev)->bulk_in = 0;
+ MSC_INST (dev)->bulk_out = 0;
+
+ for (i = 1; i <= dev->num_endp; i++) {
+ if (dev->endpoints[i].endpoint == 0)
+ continue;
+ if (dev->endpoints[i].type != BULK)
+ continue;
+ if ((dev->endpoints[i].direction == IN)
+ && (MSC_INST (dev)->bulk_in == 0))
+ MSC_INST (dev)->bulk_in = &dev->endpoints[i];
+ if ((dev->endpoints[i].direction == OUT)
+ && (MSC_INST (dev)->bulk_out == 0))
+ MSC_INST (dev)->bulk_out = &dev->endpoints[i];
+ }
+
+ if (MSC_INST (dev)->bulk_in == 0)
+ fatal ("couldn't find bulk-in endpoint");
+ if (MSC_INST (dev)->bulk_out == 0)
+ fatal ("couldn't find bulk-out endpoint");
+ printf (" using endpoint %x as in, %x as out\n",
+ MSC_INST (dev)->bulk_in->endpoint,
+ MSC_INST (dev)->bulk_out->endpoint);
+
+ printf (" has %d luns\n", get_max_luns (dev) + 1);
+
+ printf (" Waiting for device to become ready... ");
+ timeout = 10;
+ while (test_unit_ready (dev) && --timeout) {
+ mdelay (100);
+ printf (".");
+ }
+ if (test_unit_ready (dev)) {
+ printf ("timeout. Device not ready. Still trying...\n");
+ } else {
+ printf ("ok.\n");
+ }
+
+ printf (" spin up");
+ for (i = 0; i < 30; i++) {
+ printf (".");
+ if (!spin_up (dev)) {
+ printf (" OK.");
+ break;
+ }
+ mdelay (100);
+ }
+ printf ("\n");
+
+ read_capacity (dev);
+ usbdisk_create (dev);
+}
diff --git a/payloads/libpayload/drivers/usb/usbmsc.h b/payloads/libpayload/drivers/usb/usbmsc.h
new file mode 100644
index 0000000000..e180d3e64a
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/usbmsc.h
@@ -0,0 +1,47 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef __USBMSC_H
+#define __USBMSC_H
+typedef struct {
+ unsigned int blocksize;
+ unsigned int numblocks;
+ endpoint_t *bulk_in;
+ endpoint_t *bulk_out;
+} usbmsc_inst_t;
+
+#define MSC_INST(dev) ((usbmsc_inst_t*)(dev)->data)
+
+typedef enum { cbw_direction_data_in = 0x80, cbw_direction_data_out = 0
+} cbw_direction;
+
+int readwrite_blocks (usbdev_t *dev, int start, int n, cbw_direction dir,
+ u8 *buf);
+
+#endif
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