coreboot-kgpe-d16/payloads/libpayload/drivers/usb/ohci.c

906 lines
30 KiB
C
Raw Normal View History

/*
* This file is part of the libpayload project.
*
* Copyright (C) 2010 Patrick Georgi
*
* 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.
*/
//#define USB_DEBUG
#include <arch/virtual.h>
#include <usb/usb.h>
#include "ohci_private.h"
#include "ohci.h"
static void ohci_start (hci_t *controller);
static void ohci_stop (hci_t *controller);
static void ohci_reset (hci_t *controller);
static void ohci_shutdown (hci_t *controller);
static int ohci_bulk (endpoint_t *ep, int size, u8 *data, int finalize);
static int ohci_control (usbdev_t *dev, direction_t dir, int drlen, void *devreq,
int dalen, u8 *data);
static void* ohci_create_intr_queue (endpoint_t *ep, int reqsize, int reqcount, int reqtiming);
static void ohci_destroy_intr_queue (endpoint_t *ep, void *queue);
static u8* ohci_poll_intr_queue (void *queue);
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
static int ohci_process_done_queue(ohci_t *ohci, int spew_debug);
#ifdef USB_DEBUG
static void
dump_td (td_t *cur)
{
usb_debug("+---------------------------------------------------+\n");
if (((cur->config & (3UL << 19)) >> 19) == 0)
usb_debug("|..[SETUP]..........................................|\n");
else if (((cur->config & (3UL << 8)) >> 8) == 2)
usb_debug("|..[IN].............................................|\n");
else if (((cur->config & (3UL << 8)) >> 8) == 1)
usb_debug("|..[OUT]............................................|\n");
else
usb_debug("|..[]...............................................|\n");
usb_debug("|:|============ OHCI TD at [0x%08lx] ==========|:|\n", virt_to_phys(cur));
usb_debug("|:| ERRORS = [%ld] | CONFIG = [0x%08lx] | |:|\n",
3 - ((cur->config & (3UL << 26)) >> 26), cur->config);
usb_debug("|:+-----------------------------------------------+:|\n");
usb_debug("|:| C | Condition Code | [%02ld] |:|\n", (cur->config & (0xFUL << 28)) >> 28);
usb_debug("|:| O | Direction/PID | [%ld] |:|\n", (cur->config & (3UL << 19)) >> 19);
usb_debug("|:| N | Buffer Rounding | [%ld] |:|\n", (cur->config & (1UL << 18)) >> 18);
usb_debug("|:| F | Delay Intterrupt | [%ld] |:|\n", (cur->config & (7UL << 21)) >> 21);
usb_debug("|:| I | Data Toggle | [%ld] |:|\n", (cur->config & (3UL << 24)) >> 24);
usb_debug("|:| G | Error Count | [%ld] |:|\n", (cur->config & (3UL << 26)) >> 26);
usb_debug("|:+-----------------------------------------------+:|\n");
usb_debug("|:| Current Buffer Pointer [0x%08lx] |:|\n", cur->current_buffer_pointer);
usb_debug("|:+-----------------------------------------------+:|\n");
usb_debug("|:| Next TD [0x%08lx] |:|\n", cur->next_td);
usb_debug("|:+-----------------------------------------------+:|\n");
usb_debug("|:| Current Buffer End [0x%08lx] |:|\n", cur->buffer_end);
usb_debug("|:|-----------------------------------------------|:|\n");
usb_debug("|...................................................|\n");
usb_debug("+---------------------------------------------------+\n");
}
static void
dump_ed (ed_t *cur)
{
td_t *tmp_td = NULL;
usb_debug("+===================================================+\n");
usb_debug("| ############# OHCI ED at [0x%08lx] ########### |\n", virt_to_phys(cur));
usb_debug("+---------------------------------------------------+\n");
usb_debug("| Next Endpoint Descriptor [0x%08lx] |\n", cur->next_ed & ~0xFUL);
usb_debug("+---------------------------------------------------+\n");
usb_debug("| | @ 0x%08lx : |\n", cur->config);
usb_debug("| C | Maximum Packet Length | [%04ld] |\n", ((cur->config & (0x3fffUL << 16)) >> 16));
usb_debug("| O | Function Address | [%04ld] |\n", cur->config & 0x7F);
usb_debug("| N | Endpoint Number | [%02ld] |\n", (cur->config & (0xFUL << 7)) >> 7);
usb_debug("| F | Endpoint Direction | [%ld] |\n", ((cur->config & (3UL << 11)) >> 11));
usb_debug("| I | Endpoint Speed | [%ld] |\n", ((cur->config & (1UL << 13)) >> 13));
usb_debug("| G | Skip | [%ld] |\n", ((cur->config & (1UL << 14)) >> 14));
usb_debug("| | Format | [%ld] |\n", ((cur->config & (1UL << 15)) >> 15));
usb_debug("+---------------------------------------------------+\n");
usb_debug("| TD Queue Tail Pointer [0x%08lx] |\n", cur->tail_pointer & ~0xFUL);
usb_debug("+---------------------------------------------------+\n");
usb_debug("| TD Queue Head Pointer [0x%08lx] |\n", cur->head_pointer & ~0xFUL);
usb_debug("| CarryToggleBit [%d] Halted [%d] |\n", (u16)(cur->head_pointer & 0x2UL)>>1, (u16)(cur->head_pointer & 0x1UL));
tmp_td = (td_t *)phys_to_virt((cur->head_pointer & ~0xFUL));
if ((cur->head_pointer & ~0xFUL) != (cur->tail_pointer & ~0xFUL)) {
usb_debug("|:::::::::::::::::: OHCI TD CHAIN ::::::::::::::::::|\n");
while (virt_to_phys(tmp_td) != (cur->tail_pointer & ~0xFUL))
{
dump_td(tmp_td);
tmp_td = (td_t *)phys_to_virt((tmp_td->next_td & ~0xFUL));
}
usb_debug("|:::::::::::::::: EOF OHCI TD CHAIN ::::::::::::::::|\n");
usb_debug("+---------------------------------------------------+\n");
} else {
usb_debug("+---------------------------------------------------+\n");
}
}
#endif
static void
ohci_reset (hci_t *controller)
{
if (controller == NULL)
return;
OHCI_INST(controller)->opreg->HcCommandStatus = HostControllerReset;
mdelay(2); /* wait 2ms */
OHCI_INST(controller)->opreg->HcControl = 0;
mdelay(10); /* wait 10ms */
}
static void
ohci_reinit (hci_t *controller)
{
}
#if 0 && defined(USB_DEBUG)
/* Section 4.3.3 */
static const char *completion_codes[] = {
"No error",
"CRC",
"Bit stuffing",
"Data toggle mismatch",
"Stall",
"Device not responding",
"PID check failure",
"Unexpected PID",
"Data overrun",
"Data underrun",
"--- (10)",
"--- (11)",
"Buffer overrun",
"Buffer underrun",
"Not accessed (14)",
"Not accessed (15)"
};
/* Section 4.3.1.2 */
static const char *direction[] = {
"SETUP",
"OUT",
"IN",
"reserved / from TD"
};
#endif
hci_t *
ohci_init (unsigned long physical_bar)
{
int i;
hci_t *controller = new_controller ();
controller->instance = xzalloc(sizeof (ohci_t));
controller->type = OHCI;
controller->start = ohci_start;
controller->stop = ohci_stop;
controller->reset = ohci_reset;
controller->init = ohci_reinit;
controller->shutdown = ohci_shutdown;
controller->bulk = ohci_bulk;
controller->control = ohci_control;
controller->set_address = generic_set_address;
controller->finish_device_config = NULL;
controller->destroy_device = NULL;
controller->create_intr_queue = ohci_create_intr_queue;
controller->destroy_intr_queue = ohci_destroy_intr_queue;
controller->poll_intr_queue = ohci_poll_intr_queue;
init_device_entry (controller, 0);
OHCI_INST (controller)->roothub = controller->devices[0];
OHCI_INST (controller)->opreg = (opreg_t*)phys_to_virt(physical_bar);
usb_debug("OHCI Version %x.%x\n", (OHCI_INST (controller)->opreg->HcRevision >> 4) & 0xf, OHCI_INST (controller)->opreg->HcRevision & 0xf);
if ((OHCI_INST (controller)->opreg->HcControl & HostControllerFunctionalStateMask) == USBReset) {
/* cold boot */
OHCI_INST (controller)->opreg->HcControl &= ~RemoteWakeupConnected;
OHCI_INST (controller)->opreg->HcFmInterval = (11999 * FrameInterval) | ((((11999 - 210)*6)/7) * FSLargestDataPacket);
/* TODO: right value for PowerOnToPowerGoodTime ? */
OHCI_INST (controller)->opreg->HcRhDescriptorA = NoPowerSwitching | NoOverCurrentProtection | (10 * PowerOnToPowerGoodTime);
OHCI_INST (controller)->opreg->HcRhDescriptorB = (0 * DeviceRemovable);
udelay(100); /* TODO: reset asserting according to USB spec */
} else if ((OHCI_INST (controller)->opreg->HcControl & HostControllerFunctionalStateMask) != USBOperational) {
OHCI_INST (controller)->opreg->HcControl = (OHCI_INST (controller)->opreg->HcControl & ~HostControllerFunctionalStateMask) | USBResume;
udelay(100); /* TODO: resume time according to USB spec */
}
int interval = OHCI_INST (controller)->opreg->HcFmInterval;
OHCI_INST (controller)->opreg->HcCommandStatus = HostControllerReset;
udelay (10); /* at most 10us for reset to complete. State must be set to Operational within 2ms (5.1.1.4) */
OHCI_INST (controller)->opreg->HcFmInterval = interval;
OHCI_INST (controller)->hcca = dma_memalign(256, 256);
memset((void*)OHCI_INST (controller)->hcca, 0, 256);
if (dma_initialized()) {
OHCI_INST(controller)->dma_buffer = dma_memalign(4096, DMA_SIZE);
if (!OHCI_INST(controller)->dma_buffer)
fatal("Not enough DMA memory for OHCI bounce buffer.\n");
}
/* Initialize interrupt table. */
u32 *const intr_table = OHCI_INST(controller)->hcca->HccaInterruptTable;
ed_t *const periodic_ed = dma_memalign(sizeof(ed_t), sizeof(ed_t));
memset((void *)periodic_ed, 0, sizeof(*periodic_ed));
for (i = 0; i < 32; ++i)
intr_table[i] = virt_to_phys(periodic_ed);
OHCI_INST (controller)->periodic_ed = periodic_ed;
OHCI_INST (controller)->opreg->HcHCCA = virt_to_phys(OHCI_INST (controller)->hcca);
/* Make sure periodic schedule is enabled. */
OHCI_INST (controller)->opreg->HcControl |= PeriodicListEnable;
OHCI_INST (controller)->opreg->HcControl &= ~IsochronousEnable; // unused by this driver
// disable everything, contrary to what OHCI spec says in 5.1.1.4, as we don't need IRQs
OHCI_INST (controller)->opreg->HcInterruptEnable = 1 << 31;
OHCI_INST (controller)->opreg->HcInterruptDisable = ~(1 << 31);
OHCI_INST (controller)->opreg->HcInterruptStatus = ~0;
OHCI_INST (controller)->opreg->HcPeriodicStart = (((OHCI_INST (controller)->opreg->HcFmInterval & FrameIntervalMask) / 10) * 9);
OHCI_INST (controller)->opreg->HcControl = (OHCI_INST (controller)->opreg->HcControl & ~HostControllerFunctionalStateMask) | USBOperational;
mdelay(100);
controller->devices[0]->controller = controller;
controller->devices[0]->init = ohci_rh_init;
controller->devices[0]->init (controller->devices[0]);
return controller;
}
#if IS_ENABLED(CONFIG_LP_USB_PCI)
hci_t *
ohci_pci_init (pcidev_t addr)
{
u32 reg_base;
/* regarding OHCI spec, Appendix A, BAR_OHCI register description, Table A-4
* BASE ADDRESS only [31-12] bits. All other usually 0, but not all.
* OHCI mandates MMIO, so bit 0 is clear */
reg_base = pci_read_config32 (addr, 0x10) & 0xfffff000;
return ohci_init((unsigned long)reg_base);
}
#endif
static void
ohci_shutdown (hci_t *controller)
{
if (controller == 0)
return;
detach_controller (controller);
ohci_stop(controller);
ohci_reset(controller);
free (OHCI_INST (controller)->hcca);
free ((void *)OHCI_INST (controller)->periodic_ed);
free (OHCI_INST (controller));
free (controller);
}
static void
ohci_start (hci_t *controller)
{
OHCI_INST (controller)->opreg->HcControl |= PeriodicListEnable;
}
static void
ohci_stop (hci_t *controller)
{
OHCI_INST (controller)->opreg->HcControl &= ~PeriodicListEnable;
}
static int
wait_for_ed(usbdev_t *dev, ed_t *head, int pages)
{
/* wait for results */
/* TOTEST: how long to wait?
* give 2s per TD (2 pages) plus another 2s for now
*/
int timeout = pages*1000 + 2000;
while (((head->head_pointer & ~3) != head->tail_pointer) &&
!(head->head_pointer & 1) &&
((((td_t*)phys_to_virt(head->head_pointer & ~3))->config
& TD_CC_MASK) >= TD_CC_NOACCESS) &&
timeout--) {
/* don't log every ms */
if (!(timeout % 100))
usb_debug("intst: %x; ctrl: %x; cmdst: %x; head: %x -> %x, tail: %x, condition: %x\n",
OHCI_INST(dev->controller)->opreg->HcInterruptStatus,
OHCI_INST(dev->controller)->opreg->HcControl,
OHCI_INST(dev->controller)->opreg->HcCommandStatus,
head->head_pointer,
((td_t*)phys_to_virt(head->head_pointer & ~3))->next_td,
head->tail_pointer,
(((td_t*)phys_to_virt(head->head_pointer & ~3))->config & TD_CC_MASK) >> TD_CC_SHIFT);
mdelay(1);
}
if (timeout < 0)
usb_debug("Error: ohci: endpoint "
"descriptor processing timed out.\n");
/* Clear the done queue. */
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
int result = ohci_process_done_queue(OHCI_INST(dev->controller), 1);
if (head->head_pointer & 1) {
usb_debug("HALTED!\n");
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
return -1;
}
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
return result;
}
static void
ohci_free_ed (ed_t *const head)
{
/* In case the transfer canceled, we have to free unprocessed TDs. */
while ((head->head_pointer & ~0x3) != head->tail_pointer) {
/* Save current TD pointer. */
td_t *const cur_td =
(td_t*)phys_to_virt(head->head_pointer & ~0x3);
/* Advance head pointer. */
head->head_pointer = cur_td->next_td;
/* Free current TD. */
free((void *)cur_td);
}
/* Always free the dummy TD */
if ((head->head_pointer & ~0x3) == head->tail_pointer)
free(phys_to_virt(head->head_pointer & ~0x3));
/* and the ED. */
free((void *)head);
}
static int
ohci_control (usbdev_t *dev, direction_t dir, int drlen, void *setup, int dalen,
unsigned char *src)
{
u8 *data = src;
u8 *devreq = setup;
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
int remaining = dalen;
td_t *cur;
if (!dma_coherent(devreq)) {
devreq = OHCI_INST(dev->controller)->dma_buffer;
memcpy(devreq, setup, drlen);
}
if (dalen > 0 && !dma_coherent(src)) {
data = OHCI_INST(dev->controller)->dma_buffer + drlen;
if (drlen + dalen > DMA_SIZE) {
usb_debug("OHCI control transfer too large for DMA buffer: %d\n", drlen + dalen);
return -1;
}
if (dir == OUT)
memcpy(data, src, dalen);
}
// pages are specified as 4K in OHCI, so don't use getpagesize()
int first_page = (unsigned long)data / 4096;
int last_page = (unsigned long)(data+dalen-1)/4096;
if (last_page < first_page) last_page = first_page;
int pages = (dalen==0)?0:(last_page - first_page + 1);
/* First TD. */
td_t *const first_td = (td_t *)dma_memalign(sizeof(td_t), sizeof(td_t));
memset((void *)first_td, 0, sizeof(*first_td));
cur = first_td;
cur->config = TD_DIRECTION_SETUP |
TD_DELAY_INTERRUPT_NOINTR |
TD_TOGGLE_FROM_TD |
TD_TOGGLE_DATA0 |
TD_CC_NOACCESS;
cur->current_buffer_pointer = virt_to_phys(devreq);
cur->buffer_end = virt_to_phys(devreq + drlen - 1);
while (pages > 0) {
/* One more TD. */
td_t *const next = (td_t *)dma_memalign(sizeof(td_t), sizeof(td_t));
memset((void *)next, 0, sizeof(*next));
/* Linked to the previous. */
cur->next_td = virt_to_phys(next);
/* Advance to the new TD. */
cur = next;
cur->config = (dir == IN ? TD_DIRECTION_IN : TD_DIRECTION_OUT) |
TD_DELAY_INTERRUPT_NOINTR |
TD_TOGGLE_FROM_ED |
TD_CC_NOACCESS;
cur->current_buffer_pointer = virt_to_phys(data);
pages--;
int consumed = (4096 - ((unsigned long)data % 4096));
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
if (consumed >= remaining) {
// end of data is within same page
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
cur->buffer_end = virt_to_phys(data + remaining - 1);
remaining = 0;
/* assert(pages == 0); */
} else {
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
remaining -= consumed;
data += consumed;
pages--;
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
int second_page_size = remaining;
if (remaining > 4096) {
second_page_size = 4096;
}
cur->buffer_end = virt_to_phys(data + second_page_size - 1);
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
remaining -= second_page_size;
data += second_page_size;
}
}
/* One more TD. */
td_t *const next_td = (td_t *)dma_memalign(sizeof(td_t), sizeof(td_t));
memset((void *)next_td, 0, sizeof(*next_td));
/* Linked to the previous. */
cur->next_td = virt_to_phys(next_td);
/* Advance to the new TD. */
cur = next_td;
cur->config = (dir == IN ? TD_DIRECTION_OUT : TD_DIRECTION_IN) |
TD_DELAY_INTERRUPT_ZERO | /* Write done head after this TD. */
TD_TOGGLE_FROM_TD |
TD_TOGGLE_DATA1 |
TD_CC_NOACCESS;
cur->current_buffer_pointer = 0;
cur->buffer_end = 0;
/* Final dummy TD. */
td_t *const final_td = (td_t *)dma_memalign(sizeof(td_t), sizeof(td_t));
memset((void *)final_td, 0, sizeof(*final_td));
/* Linked to the previous. */
cur->next_td = virt_to_phys(final_td);
/* Data structures */
ed_t *head = dma_memalign(sizeof(ed_t), sizeof(ed_t));
memset((void*)head, 0, sizeof(*head));
head->config = (dev->address << ED_FUNC_SHIFT) |
(0 << ED_EP_SHIFT) |
(OHCI_FROM_TD << ED_DIR_SHIFT) |
(dev->speed?ED_LOWSPEED:0) |
(dev->endpoints[0].maxpacketsize << ED_MPS_SHIFT);
head->tail_pointer = virt_to_phys(final_td);
head->head_pointer = virt_to_phys(first_td);
usb_debug("ohci_control(): doing transfer with %x. first_td at %x\n",
head->config & ED_FUNC_MASK, virt_to_phys(first_td));
#ifdef USB_DEBUG
dump_ed(head);
#endif
/* activate schedule */
OHCI_INST(dev->controller)->opreg->HcControlHeadED = virt_to_phys(head);
OHCI_INST(dev->controller)->opreg->HcControl |= ControlListEnable;
OHCI_INST(dev->controller)->opreg->HcCommandStatus = ControlListFilled;
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
int result = wait_for_ed(dev, head,
(dalen==0)?0:(last_page - first_page + 1));
/* Wait some frames before and one after disabling list access. */
mdelay(4);
OHCI_INST(dev->controller)->opreg->HcControl &= ~ControlListEnable;
mdelay(1);
/* free memory */
ohci_free_ed(head);
if (result >= 0) {
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
result = dalen - result;
if (dir == IN && data != src)
memcpy(src, data, result);
}
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
return result;
}
/* finalize == 1: if data is of packet aligned size, add a zero length packet */
static int
ohci_bulk (endpoint_t *ep, int dalen, u8 *src, int finalize)
{
int i;
td_t *cur, *next;
int remaining = dalen;
u8 *data = src;
usb_debug("bulk: %x bytes from %x, finalize: %x, maxpacketsize: %x\n", dalen, src, finalize, ep->maxpacketsize);
if (!dma_coherent(src)) {
data = OHCI_INST(ep->dev->controller)->dma_buffer;
if (dalen > DMA_SIZE) {
usb_debug("OHCI bulk transfer too large for DMA buffer: %d\n", dalen);
return -1;
}
if (ep->direction == OUT)
memcpy(data, src, dalen);
}
// pages are specified as 4K in OHCI, so don't use getpagesize()
int first_page = (unsigned long)data / 4096;
int last_page = (unsigned long)(data+dalen-1)/4096;
if (last_page < first_page) last_page = first_page;
int pages = (dalen==0)?0:(last_page - first_page + 1);
int td_count = (pages+1)/2;
if (finalize && ((dalen % ep->maxpacketsize) == 0)) {
td_count++;
}
/* First TD. */
td_t *const first_td = (td_t *)dma_memalign(sizeof(td_t), sizeof(td_t));
memset((void *)first_td, 0, sizeof(*first_td));
cur = next = first_td;
for (i = 0; i < td_count; ++i) {
/* Advance to next TD. */
cur = next;
cur->config = (ep->direction == IN ? TD_DIRECTION_IN : TD_DIRECTION_OUT) |
TD_DELAY_INTERRUPT_NOINTR |
TD_TOGGLE_FROM_ED |
TD_CC_NOACCESS;
cur->current_buffer_pointer = virt_to_phys(data);
pages--;
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
if (remaining == 0) {
/* magic TD for empty packet transfer */
cur->current_buffer_pointer = 0;
cur->buffer_end = 0;
/* assert((pages == 0) && finalize); */
}
int consumed = (4096 - ((unsigned long)data % 4096));
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
if (consumed >= remaining) {
// end of data is within same page
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
cur->buffer_end = virt_to_phys(data + remaining - 1);
remaining = 0;
/* assert(pages == finalize); */
} else {
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
remaining -= consumed;
data += consumed;
pages--;
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
int second_page_size = remaining;
if (remaining > 4096) {
second_page_size = 4096;
}
cur->buffer_end = virt_to_phys(data + second_page_size - 1);
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
remaining -= second_page_size;
data += second_page_size;
}
/* One more TD. */
next = (td_t *)dma_memalign(sizeof(td_t), sizeof(td_t));
memset((void *)next, 0, sizeof(*next));
/* Linked to the previous. */
cur->next_td = virt_to_phys(next);
}
/* Write done head after last TD. */
cur->config &= ~TD_DELAY_INTERRUPT_MASK;
/* Advance to final, dummy TD. */
cur = next;
/* Data structures */
ed_t *head = dma_memalign(sizeof(ed_t), sizeof(ed_t));
memset((void*)head, 0, sizeof(*head));
head->config = (ep->dev->address << ED_FUNC_SHIFT) |
((ep->endpoint & 0xf) << ED_EP_SHIFT) |
(((ep->direction==IN)?OHCI_IN:OHCI_OUT) << ED_DIR_SHIFT) |
(ep->dev->speed?ED_LOWSPEED:0) |
(ep->maxpacketsize << ED_MPS_SHIFT);
head->tail_pointer = virt_to_phys(cur);
head->head_pointer = virt_to_phys(first_td) | (ep->toggle?ED_TOGGLE:0);
usb_debug("doing bulk transfer with %x(%x). first_td at %x, last %x\n",
head->config & ED_FUNC_MASK,
(head->config & ED_EP_MASK) >> ED_EP_SHIFT,
virt_to_phys(first_td), virt_to_phys(cur));
/* activate schedule */
OHCI_INST(ep->dev->controller)->opreg->HcBulkHeadED = virt_to_phys(head);
OHCI_INST(ep->dev->controller)->opreg->HcControl |= BulkListEnable;
OHCI_INST(ep->dev->controller)->opreg->HcCommandStatus = BulkListFilled;
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
int result = wait_for_ed(ep->dev, head,
(dalen==0)?0:(last_page - first_page + 1));
/* Wait some frames before and one after disabling list access. */
mdelay(4);
OHCI_INST(ep->dev->controller)->opreg->HcControl &= ~BulkListEnable;
mdelay(1);
ep->toggle = head->head_pointer & ED_TOGGLE;
/* free memory */
ohci_free_ed(head);
if (result >= 0) {
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
result = dalen - result;
if (ep->direction == IN && data != src)
memcpy(src, data, result);
libpayload: usb: Remove automatic clear_stall() calls from transfers We've recently fixed a problem where an external hard drive would choke due to one too many CLEAR_FEATURE(HALT) commands in the XHCI stack with "libpayload: usb: xhci: Fix STALL endpoint handling". Clearing stall conditions from within the transfer function is wrong in general... this is really something that is host controller agnostic and should be left to the higher-level driver to decide. The mass storage driver (the only one that should really encounter stalls right now) already contains the proper amount of clear_stall() calls... any more than that is redundant and as we found out potentially dangerous. This patch removes automatic clear stalls from UHCI and OHCI drivers as well to make things consistent between host controllers. BUG=chromium:192866 TEST=None. I could borrow the original hard drive from Shawn and compile a Snow to only use the OHCI driver to reproduce/verify this, but alas, I am lazy (and it's really not that important). Original-Change-Id: Ie1e4d4d2d70fa4abf8b4dabd33b10d6d4012048a Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/193732 Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit d46e183f3e7e0b0130becdefa6fd3ef8097df54b) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: Ie8f4ab3db8ec0d9a2d1e91c62967833e59c46700 Reviewed-on: http://review.coreboot.org/7223 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2014-04-08 22:37:39 +02:00
}
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
return result;
}
struct _intr_queue;
struct _intrq_td {
volatile td_t td;
u8 *data;
struct _intrq_td *next;
struct _intr_queue *intrq;
};
struct _intr_queue {
volatile ed_t ed;
struct _intrq_td *head;
struct _intrq_td *tail;
u8 *data;
int reqsize;
endpoint_t *endp;
unsigned int remaining_tds;
int destroy;
};
typedef struct _intrq_td intrq_td_t;
typedef struct _intr_queue intr_queue_t;
#define INTRQ_TD_FROM_TD(x) ((intrq_td_t *)x)
static void
ohci_fill_intrq_td(intrq_td_t *const td, intr_queue_t *const intrq,
u8 *const data)
{
memset(td, 0, sizeof(*td));
td->td.config = TD_QUEUETYPE_INTR |
(intrq->endp->direction == IN
? TD_DIRECTION_IN : TD_DIRECTION_OUT) |
TD_DELAY_INTERRUPT_ZERO |
TD_TOGGLE_FROM_ED |
TD_CC_NOACCESS;
td->td.current_buffer_pointer = virt_to_phys(data);
td->td.buffer_end = td->td.current_buffer_pointer + intrq->reqsize - 1;
td->intrq = intrq;
td->data = data;
}
/* create and hook-up an intr queue into device schedule */
static void *
ohci_create_intr_queue(endpoint_t *const ep, const int reqsize,
const int reqcount, const int reqtiming)
{
int i;
intrq_td_t *first_td = NULL, *last_td = NULL;
if (reqsize > 4096)
return NULL;
intr_queue_t *const intrq =
(intr_queue_t *)dma_memalign(sizeof(intrq->ed), sizeof(*intrq));
memset(intrq, 0, sizeof(*intrq));
intrq->data = (u8 *)dma_malloc(reqcount * reqsize);
intrq->reqsize = reqsize;
intrq->endp = ep;
/* Create #reqcount TDs. */
u8 *cur_data = intrq->data;
for (i = 0; i < reqcount; ++i) {
intrq_td_t *const td = dma_memalign(sizeof(td->td), sizeof(*td));
++intrq->remaining_tds;
ohci_fill_intrq_td(td, intrq, cur_data);
cur_data += reqsize;
if (!first_td)
first_td = td;
else
last_td->td.next_td = virt_to_phys(&td->td);
last_td = td;
}
/* Create last, dummy TD. */
intrq_td_t *dummy_td = dma_memalign(sizeof(dummy_td->td), sizeof(*dummy_td));
memset(dummy_td, 0, sizeof(*dummy_td));
dummy_td->intrq = intrq;
if (last_td)
last_td->td.next_td = virt_to_phys(&dummy_td->td);
last_td = dummy_td;
/* Initialize ED. */
intrq->ed.config = (ep->dev->address << ED_FUNC_SHIFT) |
((ep->endpoint & 0xf) << ED_EP_SHIFT) |
(((ep->direction == IN) ? OHCI_IN : OHCI_OUT) << ED_DIR_SHIFT) |
(ep->dev->speed ? ED_LOWSPEED : 0) |
(ep->maxpacketsize << ED_MPS_SHIFT);
intrq->ed.tail_pointer = virt_to_phys(last_td);
intrq->ed.head_pointer = virt_to_phys(first_td) |
(ep->toggle ? ED_TOGGLE : 0);
/* Insert ED into periodic table. */
int nothing_placed = 1;
ohci_t *const ohci = OHCI_INST(ep->dev->controller);
u32 *const intr_table = ohci->hcca->HccaInterruptTable;
const u32 dummy_ptr = virt_to_phys(ohci->periodic_ed);
for (i = 0; i < 32; i += reqtiming) {
/* Advance to the next free position. */
while ((i < 32) && (intr_table[i] != dummy_ptr)) ++i;
if (i < 32) {
intr_table[i] = virt_to_phys(&intrq->ed);
nothing_placed = 0;
}
}
if (nothing_placed) {
usb_debug("Error: Failed to place ohci interrupt endpoint "
"descriptor into periodic table: no space left\n");
ohci_destroy_intr_queue(ep, intrq);
return NULL;
}
return intrq;
}
/* remove queue from device schedule, dropping all data that came in */
static void
ohci_destroy_intr_queue(endpoint_t *const ep, void *const q_)
{
intr_queue_t *const intrq = (intr_queue_t *)q_;
int i;
/* Remove interrupt queue from periodic table. */
ohci_t *const ohci = OHCI_INST(ep->dev->controller);
u32 *const intr_table = ohci->hcca->HccaInterruptTable;
for (i=0; i < 32; ++i) {
if (intr_table[i] == virt_to_phys(intrq))
intr_table[i] = virt_to_phys(ohci->periodic_ed);
}
/* Wait for frame to finish. */
mdelay(1);
/* Free unprocessed TDs. */
while ((intrq->ed.head_pointer & ~0x3) != intrq->ed.tail_pointer) {
td_t *const cur_td =
(td_t *)phys_to_virt(intrq->ed.head_pointer & ~0x3);
intrq->ed.head_pointer = cur_td->next_td;
free(INTRQ_TD_FROM_TD(cur_td));
--intrq->remaining_tds;
}
/* Free final, dummy TD. */
free(phys_to_virt(intrq->ed.head_pointer & ~0x3));
/* Free data buffer. */
free(intrq->data);
/* Free TDs already fetched from the done queue. */
ohci_process_done_queue(ohci, 1);
while (intrq->head) {
intrq_td_t *const cur_td = intrq->head;
intrq->head = intrq->head->next;
free(cur_td);
--intrq->remaining_tds;
}
/* Mark interrupt queue to be destroyed.
ohci_process_done_queue() will free the remaining TDs
and finish the interrupt queue off once all TDs are gone. */
intrq->destroy = 1;
/* Save data toggle. */
ep->toggle = intrq->ed.head_pointer & ED_TOGGLE;
}
/* read one intr-packet from queue, if available. extend the queue for new input.
return NULL if nothing new available.
Recommended use: while (data=poll_intr_queue(q)) process(data);
*/
static u8 *
ohci_poll_intr_queue(void *const q_)
{
intr_queue_t *const intrq = (intr_queue_t *)q_;
u8 *data = NULL;
/* Process done queue first, then check if we have work to do. */
ohci_process_done_queue(OHCI_INST(intrq->endp->dev->controller), 0);
if (intrq->head) {
/* Save pointer to processed TD and advance. */
intrq_td_t *const cur_td = intrq->head;
intrq->head = cur_td->next;
/* Return data buffer of this TD. */
data = cur_td->data;
/* Requeue this TD (i.e. copy to dummy and requeue as dummy). */
intrq_td_t *const dummy_td =
INTRQ_TD_FROM_TD(phys_to_virt(intrq->ed.tail_pointer));
ohci_fill_intrq_td(dummy_td, intrq, cur_td->data);
/* Reset all but intrq pointer (i.e. init as dummy). */
memset(cur_td, 0, sizeof(*cur_td));
cur_td->intrq = intrq;
/* Insert into interrupt queue as dummy. */
dummy_td->td.next_td = virt_to_phys(&cur_td->td);
intrq->ed.tail_pointer = virt_to_phys(&cur_td->td);
}
return data;
}
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
static int
ohci_process_done_queue(ohci_t *const ohci, const int spew_debug)
{
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
/* returns the amount of bytes *not* transmitted for short packets */
int result = 0;
int i, j;
/* Temporary queue of interrupt queue TDs (to reverse order). */
intrq_td_t *temp_tdq = NULL;
/* Check if done head has been written. */
if (!(ohci->opreg->HcInterruptStatus & WritebackDoneHead))
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
return 0;
/* Fetch current done head.
Lsb is only interesting for hw interrupts. */
u32 phys_done_queue = ohci->hcca->HccaDoneHead & ~1;
/* Tell host controller, he may overwrite the done head pointer. */
ohci->opreg->HcInterruptStatus = WritebackDoneHead;
i = 0;
/* Process done queue (it's in reversed order). */
while (phys_done_queue) {
td_t *const done_td = (td_t *)phys_to_virt(phys_done_queue);
/* Advance pointer to next TD. */
phys_done_queue = done_td->next_td;
switch (done_td->config & TD_QUEUETYPE_MASK) {
case TD_QUEUETYPE_ASYNC:
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
/* Free processed async TDs and count short transfer. */
if (done_td->current_buffer_pointer)
result += (done_td->buffer_end & 0xfff) -
(done_td->current_buffer_pointer
& 0xfff) + 1;
free((void *)done_td);
break;
case TD_QUEUETYPE_INTR: {
intrq_td_t *const td = INTRQ_TD_FROM_TD(done_td);
intr_queue_t *const intrq = td->intrq;
/* Check if the corresponding interrupt
queue is still beeing processed. */
if (intrq->destroy) {
/* Free this TD, and */
free(td);
--intrq->remaining_tds;
usb_debug("Freed TD from orphaned interrupt "
"queue, %d TDs remain.\n",
intrq->remaining_tds);
/* the interrupt queue if it has no more TDs. */
if (!intrq->remaining_tds)
free(intrq);
} else {
/* Save done TD to be processed. */
td->next = temp_tdq;
temp_tdq = td;
}
break;
}
default:
break;
}
++i;
}
if (spew_debug)
usb_debug("Processed %d done TDs.\n", i);
j = 0;
/* Process interrupt queue TDs in right order. */
while (temp_tdq) {
/* Save pointer of current TD and advance. */
intrq_td_t *const cur_td = temp_tdq;
temp_tdq = temp_tdq->next;
/* The interrupt queue for the current TD. */
intr_queue_t *const intrq = cur_td->intrq;
/* Append to interrupt queue. */
if (!intrq->head) {
/* First element. */
intrq->head = intrq->tail = cur_td;
} else {
/* Insert at tail. */
intrq->tail->next = cur_td;
intrq->tail = cur_td;
}
/* It's always the last element. */
cur_td->next = NULL;
++j;
}
if (spew_debug)
usb_debug("processed %d done tds, %d intr tds thereof.\n", i, j);
libpayload: Make USB transfer functions return amount of bytes The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-02-21 22:41:40 +01:00
return result;
}