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historical/m0-applesillicon.git/xnu-qemu-arm64-5.1.0/roms/SLOF/lib/libusb/usb-ohci.c
ThatLinuxFan 4061214e6a phht hahahahaah
2024-01-16 11:20:27 -06:00

1057 lines
29 KiB
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/*****************************************************************************
* Copyright (c) 2013 IBM Corporation
* All rights reserved.
* This program and the accompanying materials
* are made available under the terms of the BSD License
* which accompanies this distribution, and is available at
* http://www.opensource.org/licenses/bsd-license.php
*
* Contributors:
* IBM Corporation - initial implementation
*****************************************************************************/
#include <string.h>
#include <byteorder.h>
#include "usb.h"
#include "usb-core.h"
#include "usb-ohci.h"
#undef OHCI_DEBUG
//#define OHCI_DEBUG
#ifdef OHCI_DEBUG
#define dprintf(_x ...) do { printf(_x); } while(0)
#else
#define dprintf(_x ...)
#endif
#undef OHCI_DEBUG_PACKET
//#define OHCI_DEBUG_PACKET
#ifdef OHCI_DEBUG_PACKET
#define dpprintf(_x ...) do { printf(_x); } while(0)
#else
#define dpprintf(_x ...)
#endif
/*
* Dump OHCI register
*
* @param - ohci_hcd
* @return -
*/
static void ohci_dump_regs(struct ohci_regs *regs)
{
dprintf("\n - HcRevision %08X", read_reg32(&regs->rev));
dprintf(" - HcControl %08X", read_reg32(&regs->control));
dprintf("\n - HcCommandStatus %08X", read_reg32(&regs->cmd_status));
dprintf(" - HcInterruptStatus %08X", read_reg32(&regs->intr_status));
dprintf("\n - HcInterruptEnable %08X", read_reg32(&regs->intr_enable));
dprintf(" - HcInterruptDisable %08X", read_reg32(&regs->intr_disable));
dprintf("\n - HcHCCA %08X", read_reg32(&regs->hcca));
dprintf(" - HcPeriodCurrentED %08X", read_reg32(&regs->period_curr_ed));
dprintf("\n - HcControlHeadED %08X", read_reg32(&regs->cntl_head_ed));
dprintf(" - HcControlCurrentED %08X", read_reg32(&regs->cntl_curr_ed));
dprintf("\n - HcBulkHeadED %08X", read_reg32(&regs->bulk_head_ed));
dprintf(" - HcBulkCurrentED %08X", read_reg32(&regs->bulk_curr_ed));
dprintf("\n - HcDoneHead %08X", read_reg32(&regs->done_head));
dprintf(" - HcFmInterval %08X", read_reg32(&regs->fm_interval));
dprintf("\n - HcFmRemaining %08X", read_reg32(&regs->fm_remaining));
dprintf(" - HcFmNumber %08X", read_reg32(&regs->fm_num));
dprintf("\n - HcPeriodicStart %08X", read_reg32(&regs->period_start));
dprintf(" - HcLSThreshold %08X", read_reg32(&regs->ls_threshold));
dprintf("\n - HcRhDescriptorA %08X", read_reg32(&regs->rh_desc_a));
dprintf(" - HcRhDescriptorB %08X", read_reg32(&regs->rh_desc_b));
dprintf("\n - HcRhStatus %08X", read_reg32(&regs->rh_status));
dprintf("\n");
}
/*
* OHCI Spec 5.1.1
* OHCI Spec 7.4 Root Hub Partition
*/
static int ohci_hcd_reset(struct ohci_regs *regs)
{
uint32_t time;
/* USBRESET - 1sec */
write_reg32(&regs->control, 0);
SLOF_msleep(100);
write_reg32(&regs->intr_disable, ~0);
write_reg32(&regs->cmd_status, OHCI_CMD_STATUS_HCR);
mb();
time = 30; /* wait for not more than 30usec */
while ((read_reg32(&regs->cmd_status) & OHCI_CMD_STATUS_HCR) != 0) {
time--;
if (!time) {
printf(" ** HCD Reset failed...");
return -1;
}
SLOF_usleep(1);
}
return 0;
}
static int ohci_hcd_init(struct ohci_hcd *ohcd)
{
struct ohci_regs *regs;
struct ohci_ed *ed;
long ed_phys = 0;
unsigned int i;
uint32_t oldrwc;
struct usb_dev *rhdev = NULL;
struct usb_ep_descr ep;
uint32_t reg;
if (!ohcd)
return -1;
regs = ohcd->regs;
rhdev = &ohcd->rhdev;
dprintf("%s: HCCA memory %p\n", __func__, ohcd->hcca);
dprintf("%s: OHCI Regs %p\n", __func__, regs);
rhdev->hcidev = ohcd->hcidev;
ep.bmAttributes = USB_EP_TYPE_INTR;
ep.wMaxPacketSize = 8;
rhdev->intr = usb_get_pipe(rhdev, &ep, NULL, 0);
if (!rhdev->intr) {
printf("usb-ohci: oops could not allocate intr_pipe\n");
return -1;
}
/*
* OHCI Spec 4.4: Host Controller Communications Area
*/
ed = ohci_pipe_get_ed(rhdev->intr);
ed_phys = ohci_pipe_get_ed_phys(rhdev->intr);
memset(ohcd->hcca, 0, HCCA_SIZE);
memset(ed, 0, sizeof(struct ohci_ed));
ed->attr = cpu_to_le32(EDA_SKIP);
for (i = 0; i < HCCA_INTR_NUM; i++)
ohcd->hcca->intr_table[i] = cpu_to_le32(ed_phys);
write_reg32(&regs->hcca, ohcd->hcca_phys);
write_reg32(&regs->cntl_head_ed, 0);
write_reg32(&regs->bulk_head_ed, 0);
/* OHCI Spec 7.1.2 HcControl Register */
oldrwc = read_reg32(&regs->control) & OHCI_CTRL_RWC;
write_reg32(&regs->control, (OHCI_CTRL_CBSR | OHCI_CTRL_CLE |
OHCI_CTRL_BLE | OHCI_CTRL_PLE |
OHCI_USB_OPER | oldrwc));
SLOF_msleep(100);
/*
* For JS20/21 need to rewrite it after setting it to
* operational state
*/
write_reg32(&regs->fm_interval, FRAME_INTERVAL);
write_reg32(&regs->period_start, PERIODIC_START);
reg = read_reg32(&regs->rh_desc_a);
reg &= ~( RHDA_PSM_INDIVIDUAL | RHDA_OCPM_PERPORT );
reg |= RHDA_NPS_ENABLE;
write_reg32(&regs->rh_desc_a, reg);
write_reg32(&regs->rh_desc_b, 0);
mb();
SLOF_msleep(100);
ohci_dump_regs(regs);
return 0;
}
/*
* OHCI Spec 7.4 Root Hub Partition
*/
static void ohci_hub_check_ports(struct ohci_hcd *ohcd)
{
struct ohci_regs *regs;
struct usb_dev *dev;
unsigned int ports, i, port_status, port_clear = 0;
regs = ohcd->regs;
ports = read_reg32(&regs->rh_desc_a) & RHDA_NDP;
write_reg32(&regs->rh_status, RH_STATUS_LPSC);
SLOF_msleep(100);
dprintf("usb-ohci: ports connected %d\n", ports);
for (i = 0; i < ports; i++) {
dprintf("usb-ohci: ports scanning %d\n", i);
port_status = read_reg32(&regs->rh_ps[i]);
if (port_status & RH_PS_CSC) {
if (port_status & RH_PS_CCS) {
write_reg32(&regs->rh_ps[i], RH_PS_PRS);
mb();
port_clear |= RH_PS_CSC;
dprintf("Start enumerating device\n");
SLOF_msleep(100);
} else
printf("Start removing device\n");
}
port_status = read_reg32(&regs->rh_ps[i]);
if (port_status & RH_PS_PRSC) {
port_clear |= RH_PS_PRSC;
dev = usb_devpool_get();
dprintf("usb-ohci: Device reset, setting up %p\n", dev);
dev->hcidev = ohcd->hcidev;
if (usb_setup_new_device(dev, i))
usb_slof_populate_new_device(dev);
else
printf("usb-ohci: unable to setup device on port %d\n", i);
}
if (port_status & RH_PS_PESC) {
port_clear |= RH_PS_PESC;
if (port_status & RH_PS_PES)
dprintf("enabled\n");
else
dprintf("disabled\n");
}
if (port_status & RH_PS_PSSC) {
port_clear |= RH_PS_PESC;
dprintf("suspended\n");
}
port_clear &= 0xFFFF0000;
if (port_clear)
write_reg32(&regs->rh_ps[i], port_clear);
}
}
static inline struct ohci_ed *ohci_pipe_get_ed(struct usb_pipe *pipe)
{
struct ohci_pipe *opipe;
opipe = container_of(pipe, struct ohci_pipe, pipe);
dpprintf("%s: ed is %p\n", __func__, &opipe->ed);
return &opipe->ed;
}
static inline long ohci_pipe_get_ed_phys(struct usb_pipe *pipe)
{
struct ohci_pipe *opipe;
opipe = container_of(pipe, struct ohci_pipe, pipe);
dpprintf("%s: ed_phys is %x\n", __func__, opipe->ed_phys);
return opipe->ed_phys;
}
static inline struct ohci_pipe *ohci_pipe_get_opipe(struct usb_pipe *pipe)
{
struct ohci_pipe *opipe;
opipe = container_of(pipe, struct ohci_pipe, pipe);
dpprintf("%s: opipe is %p\n", __func__, opipe);
return opipe;
}
static int ohci_alloc_pipe_pool(struct ohci_hcd *ohcd)
{
struct ohci_pipe *opipe, *curr, *prev;
long opipe_phys = 0;
unsigned int i, count;
#ifdef OHCI_DEBUG_PACKET
struct usb_pipe *pipe;
#endif
dprintf("usb-ohci: %s enter\n", __func__);
count = OHCI_PIPE_POOL_SIZE/sizeof(*opipe);
ohcd->pool = opipe = SLOF_dma_alloc(OHCI_PIPE_POOL_SIZE);
if (!opipe)
return false;
ohcd->pool_phys = opipe_phys = SLOF_dma_map_in(opipe, OHCI_PIPE_POOL_SIZE, true);
dprintf("usb-ohci: %s opipe %p, opipe_phys %lx size %ld count %d\n",
__func__, opipe, opipe_phys, sizeof(*opipe), count);
/* Although an array, link them*/
for (i = 0, curr = opipe, prev = NULL; i < count; i++, curr++) {
if (prev)
prev->pipe.next = &curr->pipe;
curr->pipe.next = NULL;
prev = curr;
if (((uint64_t)&curr->ed) % 16)
printf("usb-ohci: Warning ED not aligned to 16byte boundary");
curr->ed_phys = opipe_phys + (curr - opipe) * sizeof(*curr) +
offset_of(struct ohci_pipe, ed);
}
if (!ohcd->freelist)
ohcd->freelist = &opipe->pipe;
else
ohcd->end->next = &opipe->pipe;
ohcd->end = &prev->pipe;
#ifdef OHCI_DEBUG_PACKET
for (i = 0, pipe = ohcd->freelist; pipe; pipe = pipe->next)
dprintf("usb-ohci: %d: pipe cur %p ed %p ed_phys %x\n",
i++, pipe, ohci_pipe_get_ed(pipe),
ohci_pipe_get_ed_phys(pipe));
#endif
dprintf("usb-ohci: %s exit\n", __func__);
return true;
}
static void ohci_init(struct usb_hcd_dev *hcidev)
{
struct ohci_hcd *ohcd;
printf(" OHCI: initializing\n");
dprintf("%s: device base address %p\n", __func__, hcidev->base);
ohcd = SLOF_alloc_mem(sizeof(struct ohci_hcd));
if (!ohcd) {
printf("usb-ohci: Unable to allocate memory\n");
goto out;
}
hcidev->nextaddr = 1;
hcidev->priv = ohcd;
memset(ohcd, 0, sizeof(*ohcd));
ohcd->hcidev = hcidev;
ohcd->freelist = NULL;
ohcd->end = NULL;
ohcd->regs = (struct ohci_regs *)(hcidev->base);
ohcd->hcca = SLOF_dma_alloc(sizeof(struct ohci_hcca));
if (!ohcd->hcca || PTR_U32(ohcd->hcca) & HCCA_ALIGN) {
printf("usb-ohci: Unable to allocate/unaligned HCCA memory %p\n",
ohcd->hcca);
goto out_free_hcd;
}
ohcd->hcca_phys = SLOF_dma_map_in(ohcd->hcca,
sizeof(struct ohci_hcca), true);
dprintf("usb-ohci: HCCA memory %p HCCA-dev memory %08lx\n",
ohcd->hcca, ohcd->hcca_phys);
ohci_hcd_reset(ohcd->regs);
ohci_hcd_init(ohcd);
ohci_hub_check_ports(ohcd);
return;
out_free_hcd:
SLOF_dma_free(ohcd->hcca, sizeof(struct ohci_hcca));
SLOF_free_mem(ohcd, sizeof(struct ohci_hcd));
out:
return;
}
static void ohci_exit(struct usb_hcd_dev *hcidev)
{
struct ohci_hcd *ohcd = NULL;
dprintf("%s: enter \n", __func__);
if (!hcidev && !hcidev->priv)
return;
ohcd = hcidev->priv;
write_reg32(&ohcd->regs->control, (OHCI_CTRL_CBSR | OHCI_USB_SUSPEND));
SLOF_msleep(20);
write_reg32(&ohcd->regs->hcca, cpu_to_le32(0));
if (ohcd->pool) {
SLOF_dma_map_out(ohcd->pool_phys, ohcd->pool, OHCI_PIPE_POOL_SIZE);
SLOF_dma_free(ohcd->pool, OHCI_PIPE_POOL_SIZE);
}
if (ohcd->hcca) {
SLOF_dma_map_out(ohcd->hcca_phys, ohcd->hcca, sizeof(struct ohci_hcca));
SLOF_dma_free(ohcd->hcca, sizeof(struct ohci_hcca));
}
SLOF_free_mem(ohcd, sizeof(struct ohci_hcd));
return;
}
static void ohci_detect(void)
{
}
static void ohci_disconnect(void)
{
}
#define OHCI_CTRL_TDS 3
static void ohci_fill_td(struct ohci_td *td, long next,
long req, size_t size, unsigned int attr)
{
if (size && req) {
td->cbp = cpu_to_le32(req);
td->be = cpu_to_le32(req + size - 1);
} else {
td->cbp = 0;
td->be = 0;
}
td->attr = cpu_to_le32(attr);
td->next_td = cpu_to_le32(next);
dpprintf("%s: cbp %08X attr %08X next_td %08X be %08X\n", __func__,
le32_to_cpu(td->cbp), le32_to_cpu(td->attr),
le32_to_cpu(td->next_td), le32_to_cpu(td->be));
}
static void ohci_fill_ed(struct ohci_ed *ed, long headp, long tailp,
unsigned int attr, long next_ed)
{
ed->attr = cpu_to_le32(attr);
ed->headp = cpu_to_le32(headp) | (ed->headp & ~EDA_HEADP_MASK_LE);
ed->tailp = cpu_to_le32(tailp);
ed->next_ed = cpu_to_le32(next_ed);
dpprintf("%s: headp %08X tailp %08X next_td %08X attr %08X\n", __func__,
le32_to_cpu(ed->headp), le32_to_cpu(ed->tailp),
le32_to_cpu(ed->next_ed), le32_to_cpu(ed->attr));
}
static long ohci_get_td_phys(struct ohci_td *curr, struct ohci_td *start, long td_phys)
{
dpprintf("position %d\n", curr - start);
return td_phys + (curr - start) * sizeof(*start);
}
static long ohci_get_td_virt(struct ohci_td *curr, struct ohci_td *start, long td_virt, long total_count)
{
dpprintf("position %d\n", curr - start);
if ( (curr - start) >= total_count) {
/* busted position, should ignore this */
return 0;
}
return td_virt + (curr - start) * sizeof(*start);
}
/* OHCI Spec: 4.4.2.3 HccaDoneHead*/
static int ohci_process_done_head(struct ohci_hcd *ohcd,
struct ohci_td *td_start,
long __td_start_phys, long total_count)
{
struct ohci_hcca *hcca;
struct ohci_td *td_phys = NULL, *td_start_phys;
struct ohci_td *td, *prev_td = NULL;
uint32_t reg = 0, time = 0;
int ret = true;
long count;
count = total_count;
td_start_phys = (struct ohci_td *) __td_start_phys;
hcca = ohcd->hcca;
time = SLOF_GetTimer() + USB_TIMEOUT;
dpprintf("Claiming %ld\n", count);
again:
mb();
/* Check if there is an interrupt */
reg = read_reg32(&ohcd->regs->intr_status);
while(!(reg & OHCI_INTR_STATUS_WD))
{
if (time < SLOF_GetTimer()) {
printf("Timed out waiting for interrupt %x\n", reg);
return false;
}
mb();
reg = read_reg32(&ohcd->regs->intr_status);
}
/* Interrupt is there, read from done_head pointer */
td_phys = (struct ohci_td *)(uint64_t) le32_to_cpu(hcca->done_head);
if (!td_phys) {
dprintf("Again td_phys null\n");
goto again;
}
hcca->done_head = 0;
mb();
while (td_phys && (count > 0)) {
td = (struct ohci_td *)(uint64_t) ohci_get_td_virt(td_phys,
td_start_phys,
PTR_U32(td_start),
total_count);
if (!td) {
printf("USB: Error TD null %p\n", td_phys);
break;
}
count--;
dprintf("Claimed %p(%p) td_start %p count %ld\n",
td, td_phys, td_start_phys, count);
dpprintf("%s: cbp %08X attr %08X next_td %08X be %08X\n",
__func__,
le32_to_cpu(td->cbp), le32_to_cpu(td->attr),
le32_to_cpu(td->next_td), le32_to_cpu(td->be));
mb();
reg = (le32_to_cpu(td->attr) & TDA_CC) >> 28;
if (reg) {
dprintf("%s: cbp %08X attr %08X next_td %08X be %08X\n",
__func__,
le32_to_cpu(td->cbp), le32_to_cpu(td->attr),
le32_to_cpu(td->next_td), le32_to_cpu(td->be));
printf("USB: Error %s %p\n", tda_cc_error[reg], td);
if (reg > 3) /* Return negative error code */
ret = reg * -1;
}
prev_td = td;
td_phys = (struct ohci_td *)(uint64_t) le32_to_cpu(td->next_td);
prev_td->attr |= cpu_to_le32(TDA_DONE);
prev_td->next_td = 0;
mb();
}
/* clear the WD interrupt status */
write_reg32(&ohcd->regs->intr_status, OHCI_INTR_STATUS_WD);
mb();
read_reg32(&ohcd->regs->intr_status);
if (count > 0) {
dpprintf("Pending count %d\n", count);
goto again;
}
dprintf("TD claims done\n");
return ret;
}
/*
* OHCI Spec:
* 4.2 Endpoint Descriptor
* 4.3.1 General Transfer Descriptor
* 5.2.8 Transfer Descriptor Queues
*/
static int ohci_send_ctrl(struct usb_pipe *pipe, struct usb_dev_req *req, void *data)
{
struct ohci_ed *ed;
struct ohci_td *tds, *td, *td_phys;
struct ohci_regs *regs;
struct ohci_hcd *ohcd;
uint32_t datalen;
uint32_t dir, attr = 0;
uint32_t time;
int ret = true, i;
long req_phys = 0, data_phys = 0, td_next = 0, td_count = 0;
unsigned char *dbuf;
datalen = le16_to_cpu(req->wLength);
dir = (req->bmRequestType & REQT_DIR_IN) ? 1 : 0;
dprintf("usb-ohci: %s len %d DIR_IN %d\n", __func__, datalen, dir);
tds = td = (struct ohci_td *) SLOF_dma_alloc(sizeof(*td) * OHCI_CTRL_TDS);
td_phys = (struct ohci_td *) SLOF_dma_map_in(td, sizeof(*td) * OHCI_CTRL_TDS, true);
memset(td, 0, sizeof(*td) * OHCI_CTRL_TDS);
req_phys = SLOF_dma_map_in(req, sizeof(struct usb_dev_req), true);
attr = TDA_DP_SETUP | TDA_CC | TDA_TOGGLE_DATA0;
td_next = ohci_get_td_phys(td + 1, tds, PTR_U32(td_phys));
ohci_fill_td(td, td_next, req_phys, sizeof(*req), attr);
td++; td_count++;
if (datalen) {
data_phys = SLOF_dma_map_in(data, datalen, true);
attr = 0;
attr = (dir ? TDA_DP_IN : TDA_DP_OUT) | TDA_TOGGLE_DATA1 | TDA_CC;
td_next = ohci_get_td_phys(td + 1, tds, PTR_U32(td_phys));
ohci_fill_td(td, td_next, data_phys, datalen, attr);
td++; td_count++;
}
attr = 0;
attr = (dir ? TDA_DP_OUT : TDA_DP_IN) | TDA_CC | TDA_TOGGLE_DATA1;
td_next = ohci_get_td_phys(td + 1, tds, PTR_U32(td_phys));
ohci_fill_td(td, 0, 0, 0, attr);
td_count++;
ed = ohci_pipe_get_ed(pipe);
attr = 0;
attr = EDA_FADDR(pipe->dev->addr) | EDA_MPS(pipe->mps) | EDA_SKIP;
ohci_fill_ed(ed, PTR_U32(td_phys), td_next, attr, 0);
ed->tailp = 0; /* HACK */
dprintf("usb-ohci: %s - td_start %p td_end %lx req %lx\n", __func__,
td_phys, td_next, req_phys);
mb();
ed->attr &= cpu_to_le32(~EDA_SKIP);
ohcd = pipe->dev->hcidev->priv;
regs = ohcd->regs;
write_reg32(&regs->cntl_head_ed, ohci_pipe_get_ed_phys(pipe));
mb();
write_reg32(&regs->cmd_status, OHCI_CMD_STATUS_CLF);
time = SLOF_GetTimer() + USB_TIMEOUT;
while ((time > SLOF_GetTimer()) &&
((ed->headp & EDA_HEADP_MASK_LE) != ed->tailp))
cpu_relax();
if ((ed->headp & EDA_HEADP_MASK_LE) == ed->tailp) {
dprintf("%s: packet sent\n", __func__);
#ifdef OHCI_DEBUG_PACKET
dpprintf("Request: ");
dbuf = (unsigned char *)req;
for(i = 0; i < 8; i++)
printf("%02X ", dbuf[i]);
dpprintf("\n");
if (datalen) {
dbuf = (unsigned char *)data;
dpprintf("Reply: ");
for(i = 0; i < datalen; i++)
printf("%02X ", dbuf[i]);
dpprintf("\n");
}
#endif
}
else {
printf("%s: timed out - failed\n", __func__);
dpprintf("%s: headp %08X tailp %08X next_td %08X attr %08X\n",
__func__,
le32_to_cpu(ed->headp), le32_to_cpu(ed->tailp),
le32_to_cpu(ed->next_ed), le32_to_cpu(ed->attr));
printf("Request: ");
dbuf = (unsigned char *)req;
for(i = 0; i < 8; i++)
printf("%02X ", dbuf[i]);
printf("\n");
}
ret = ohci_process_done_head(ohcd, tds, (long)td_phys, td_count);
mb();
ed->attr |= cpu_to_le32(EDA_SKIP);
mb();
write_reg32(&regs->cntl_head_ed, 0);
write_reg32(&regs->cntl_curr_ed, 0);
SLOF_dma_map_out(req_phys, req, sizeof(struct usb_dev_req));
if (datalen)
SLOF_dma_map_out(data_phys, data, datalen);
SLOF_dma_map_out(PTR_U32(td_phys), tds, sizeof(*td) * OHCI_CTRL_TDS);
SLOF_dma_free(tds, sizeof(*td) * OHCI_CTRL_TDS);
return (ret > 0) ? true : false;
}
static int ohci_transfer_bulk(struct usb_pipe *pipe, void *td_ptr,
void *td_phys_ptr, void *data_phys, int datalen)
{
struct ohci_ed *ed;
struct ohci_td *td, *tds;
struct ohci_regs *regs;
struct ohci_hcd *ohcd;
long td_phys = 0, td_next, ed_phys, ptr, td_count = 0;
uint32_t dir, attr = 0, count;
size_t len, packet_len;
uint32_t time;
int ret = true;
if (pipe->type != USB_EP_TYPE_BULK) {
printf("usb-ohci: Not a bulk pipe.\n");
ret = false;
goto end;
}
dir = (pipe->dir == USB_PIPE_OUT) ? 0 : 1;
count = datalen / OHCI_MAX_BULK_SIZE;
if (count > OHCI_MAX_TDS) {
printf("usb-ohci: buffer size not supported - %d\n", datalen);
ret = false;
goto end;
}
td = tds = (struct ohci_td *) td_ptr;
td_phys = (long)td_phys_ptr;
dprintf("usb-ohci: %s pipe %p data_phys %p len %d DIR_IN %d td %p td_phys %lx\n",
__func__, pipe, data_phys, datalen, dir, td, td_phys);
if (!tds) {
printf("%s: tds NULL recieved\n", __func__);
ret = false;
goto end;
}
memset(td, 0, sizeof(*td) * OHCI_MAX_TDS);
len = datalen;
ptr = (long)data_phys;
attr = 0;
attr = (dir ? TDA_DP_IN : TDA_DP_OUT) | TDA_CC | TDA_ROUNDING;
while (len) {
packet_len = (OHCI_MAX_BULK_SIZE < len)? OHCI_MAX_BULK_SIZE : len;
td_next = ohci_get_td_phys((td + 1), tds, td_phys);
ohci_fill_td(td, td_next, ptr, packet_len, attr);
ptr = ptr + packet_len;
len = len - packet_len;
td++; td_count++;
}
ed = ohci_pipe_get_ed(pipe);
attr = 0;
dir = pipe->dir ? EDA_DIR_IN : EDA_DIR_OUT;
attr = dir | EDA_FADDR(pipe->dev->addr) | EDA_MPS(pipe->mps)
| EDA_SKIP | pipe->dev->speed | EDA_EP(pipe->epno);
td_next = ohci_get_td_phys(td, tds, td_phys);
ohci_fill_ed(ed, td_phys, td_next, attr, 0);
dprintf("usb-ohci: %s - tds %lx td %lx\n", __func__, td_phys, td_next);
mb();
ed->attr &= cpu_to_le32(~EDA_SKIP);
ohcd = pipe->dev->hcidev->priv;
regs = ohcd->regs;
ed_phys = ohci_pipe_get_ed_phys(pipe);
write_reg32(&regs->bulk_head_ed, ed_phys);
mb();
write_reg32(&regs->cmd_status, 0x4);
time = SLOF_GetTimer() + USB_TIMEOUT;
while ((time > SLOF_GetTimer()) &&
((ed->headp & EDA_HEADP_MASK_LE) != ed->tailp))
cpu_relax();
if ((ed->headp & EDA_HEADP_MASK_LE) == ed->tailp)
dprintf("%s: packet sent\n", __func__);
else {
dpprintf("%s: headp %08X tailp %08X next_td %08X attr %08X\n", __func__,
le32_to_cpu(ed->headp), le32_to_cpu(ed->tailp),
le32_to_cpu(ed->next_ed), le32_to_cpu(ed->attr));
}
mb();
ret = ohci_process_done_head(ohcd, tds, td_phys, td_count);
mb();
ed->attr |= cpu_to_le32(EDA_SKIP);
mb();
write_reg32(&regs->bulk_head_ed, 0);
write_reg32(&regs->bulk_curr_ed, 0);
if (le32_to_cpu(ed->headp) & EDA_HEADP_HALTED) {
printf("ED Halted\n");
printf("%s: headp %08X tailp %08X next_td %08X attr %08X\n", __func__,
le32_to_cpu(ed->headp), le32_to_cpu(ed->tailp),
le32_to_cpu(ed->next_ed), le32_to_cpu(ed->attr));
ed->headp &= ~cpu_to_le32(EDA_HEADP_HALTED);
mb();
if (ret == USB_STALL) /* Call reset recovery */
usb_msc_resetrecovery(pipe->dev);
}
end:
return (ret > 0) ? true : false;
}
/* Populate the hcca intr region with periodic intr */
static int ohci_get_pipe_intr(struct usb_pipe *pipe, struct ohci_hcd *ohcd,
char *buf, size_t buflen)
{
struct ohci_hcca *hcca;
struct ohci_pipe *opipe;
struct ohci_ed *ed;
struct usb_dev *dev;
struct ohci_td *tds, *td;
int32_t count = 0, i;
uint8_t *ptr;
uint16_t mps;
long ed_phys, td_phys, td_next, buf_phys;
if (!pipe || !ohcd)
return false;
hcca = ohcd->hcca;
dev = pipe->dev;
if (dev->class != DEV_HID_KEYB && dev->class != DEV_HUB)
return false;
opipe = ohci_pipe_get_opipe(pipe);
ed = &(opipe->ed);
ed_phys = opipe->ed_phys;
mps = pipe->mps;
ed->attr = cpu_to_le32(EDA_DIR_IN |
EDA_FADDR(dev->addr) |
dev->speed |
EDA_MPS(pipe->mps) |
EDA_SKIP |
EDA_EP(pipe->epno));
dprintf("%s: pipe %p ed %p dev %p opipe %p\n", __func__,
pipe, ed, dev, opipe);
count = (buflen/mps) + 1;
tds = td = SLOF_dma_alloc(sizeof(*td) * count);
if (!tds) {
printf("%s: alloc failed\n", __func__);
return false;
}
td_phys = SLOF_dma_map_in(td, sizeof(*td) * count, false);
memset(tds, 0, sizeof(*tds) * count);
memset(buf, 0, buflen);
buf_phys = SLOF_dma_map_in(buf, buflen, false);
opipe->td = td;
opipe->td_phys = td_phys;
opipe->count = count;
opipe->buf = buf;
opipe->buflen = buflen;
opipe->buf_phys = buf_phys;
ptr = (uint8_t *)buf_phys;
for (i = 0; i < count - 1; i++, ptr += mps) {
td = &tds[i];
td_next = ohci_get_td_phys(td + 1, &tds[0], td_phys);
td->cbp = cpu_to_le32(PTR_U32(ptr));
td->attr = cpu_to_le32(TDA_DP_IN | TDA_ROUNDING | TDA_CC);
td->next_td = cpu_to_le32(td_next);
td->be = cpu_to_le32(PTR_U32(ptr) + mps - 1);
dprintf("td %p td++ %x ptr %p be %x\n",
td, le32_to_cpu(td->next_td),
ptr, (PTR_U32(ptr) + mps - 1));
}
td->next_td = 0;
td_next = ohci_get_td_phys(td, &tds[0], td_phys);
ed->headp = cpu_to_le32(td_phys);
ed->tailp = cpu_to_le32(td_next);
dprintf("%s: head %08X tail %08X, count %d, mps %d\n", __func__,
le32_to_cpu(ed->headp),
le32_to_cpu(ed->tailp),
count, mps);
ed->next_ed = 0;
switch (dev->class) {
case DEV_HID_KEYB:
dprintf("%s: Keyboard class %d\n", __func__, dev->class);
hcca->intr_table[0] = cpu_to_le32(ed_phys);
hcca->intr_table[8] = cpu_to_le32(ed_phys);
hcca->intr_table[16] = cpu_to_le32(ed_phys);
hcca->intr_table[24] = cpu_to_le32(ed_phys);
ed->attr &= cpu_to_le32(~EDA_SKIP);
break;
case DEV_HUB:
dprintf("%s: HUB class %x\n", __func__, dev->class);
hcca->intr_table[1] = cpu_to_le32(ed_phys);
ed->attr &= cpu_to_le32(~EDA_SKIP);
break;
default:
dprintf("%s: unhandled class %d\n", __func__, dev->class);
}
return true;
}
static int ohci_put_pipe_intr(struct usb_pipe *pipe, struct ohci_hcd *ohcd)
{
struct ohci_hcca *hcca;
struct ohci_pipe *opipe;
struct ohci_ed *ed;
struct usb_dev *dev;
struct ohci_td *td;
long ed_phys;
if (!pipe || !ohcd)
return false;
hcca = ohcd->hcca;
dev = pipe->dev;
if (dev->class != DEV_HID_KEYB && dev->class != DEV_HUB)
return false;
opipe = ohci_pipe_get_opipe(pipe);
ed = &(opipe->ed);
ed_phys = opipe->ed_phys;
dprintf("%s: td %p td_phys %08lx buf %p buf_phys %08lx\n", __func__,
opipe->td, opipe->td_phys, opipe->buf, opipe->buf_phys);
ed->attr |= cpu_to_le32(EDA_SKIP);
mb();
ed->headp = 0;
ed->tailp = 0;
ed->next_ed = 0;
SLOF_dma_map_out(opipe->buf_phys, opipe->buf, opipe->buflen);
SLOF_dma_map_out(opipe->td_phys, opipe->td, sizeof(*td) * opipe->count);
SLOF_dma_free(opipe->td, sizeof(*td) * opipe->count);
switch (dev->class) {
case DEV_HID_KEYB:
dprintf("%s: Keyboard class %d\n", __func__, dev->class);
hcca->intr_table[0] = cpu_to_le32(ed_phys);
hcca->intr_table[8] = cpu_to_le32(ed_phys);
hcca->intr_table[16] = cpu_to_le32(ed_phys);
hcca->intr_table[24] = cpu_to_le32(ed_phys);
break;
case DEV_HUB:
dprintf("%s: HUB class %d\n", __func__, dev->class);
hcca->intr_table[1] = cpu_to_le32(ed_phys);
break;
default:
dprintf("%s: unhandled class %d\n", __func__, dev->class);
}
return true;
}
static int ohci_init_bulk_ed(struct usb_dev *dev, struct usb_pipe *pipe)
{
struct ohci_pipe *opipe;
struct ohci_ed *ed;
uint32_t dir;
if (!pipe || !dev)
return false;
opipe = ohci_pipe_get_opipe(pipe);
ed = &(opipe->ed);
dir = pipe->dir ? EDA_DIR_IN : EDA_DIR_OUT;
ed->attr = cpu_to_le32(dir |
EDA_FADDR(dev->addr) |
dev->speed |
EDA_MPS(pipe->mps) |
EDA_SKIP |
EDA_EP(pipe->epno));
dprintf("%s: pipe %p attr %x\n", __func__, pipe,
le32_to_cpu(ed->attr));
return true;
}
static struct usb_pipe *ohci_get_pipe(struct usb_dev *dev, struct usb_ep_descr *ep,
char *buf, size_t buflen)
{
struct ohci_hcd *ohcd;
struct usb_pipe *new = NULL;
dprintf("usb-ohci: %s enter %p\n", __func__, dev);
if (!dev)
return NULL;
ohcd = (struct ohci_hcd *)dev->hcidev->priv;
if (!ohcd->freelist) {
dprintf("usb-ohci: %s allocating pool\n", __func__);
if (!ohci_alloc_pipe_pool(ohcd))
return NULL;
}
new = ohcd->freelist;
ohcd->freelist = ohcd->freelist->next;
if (!ohcd->freelist)
ohcd->end = NULL;
memset(new, 0, sizeof(*new));
new->dev = dev;
new->next = NULL;
new->type = ep->bmAttributes & USB_EP_TYPE_MASK;
new->speed = dev->speed;
new->mps = le16_to_cpu(ep->wMaxPacketSize);
new->epno = ep->bEndpointAddress & 0xF;
new->dir = ep->bEndpointAddress & 0x80;
if (new->type == USB_EP_TYPE_INTR)
if (!ohci_get_pipe_intr(new, ohcd, buf, buflen))
dprintf("usb-ohci: %s alloc_intr failed %p\n",
__func__, new);
if (new->type == USB_EP_TYPE_BULK)
ohci_init_bulk_ed(dev, new);
dprintf("usb-ohci: %s exit %p\n", __func__, new);
return new;
}
static void ohci_put_pipe(struct usb_pipe *pipe)
{
struct ohci_hcd *ohcd;
dprintf("usb-ohci: %s enter - %p\n", __func__, pipe);
if (!pipe || !pipe->dev)
return;
ohcd = pipe->dev->hcidev->priv;
if (ohcd->end)
ohcd->end->next = pipe;
else
ohcd->freelist = pipe;
if (pipe->type == USB_EP_TYPE_INTR)
if (!ohci_put_pipe_intr(pipe, ohcd))
dprintf("usb-ohci: %s alloc_intr failed %p\n",
__func__, pipe);
ohcd->end = pipe;
pipe->next = NULL;
pipe->dev = NULL;
memset(pipe, 0, sizeof(*pipe));
dprintf("usb-ohci: %s exit\n", __func__);
}
static uint16_t ohci_get_last_frame(struct usb_dev *dev)
{
struct ohci_hcd *ohcd;
struct ohci_regs *regs;
ohcd = dev->hcidev->priv;
regs = ohcd->regs;
return read_reg32(&regs->fm_num);
}
static int ohci_poll_intr(struct usb_pipe *pipe, uint8_t *data)
{
struct ohci_pipe *opipe;
struct ohci_ed *ed;
struct ohci_td *head, *tail, *curr, *next;
struct ohci_td *head_phys, *tail_phys, *curr_phys;
uint8_t *ptr = NULL;
unsigned int i, pos;
static uint16_t last_frame;
long ptr_phys = 0;
long td_next;
if (!pipe || last_frame == ohci_get_last_frame(pipe->dev))
return 0;
dprintf("%s: enter\n", __func__);
last_frame = ohci_get_last_frame(pipe->dev);
opipe = ohci_pipe_get_opipe(pipe);
ed = &opipe->ed;
head_phys = (struct ohci_td *)(long)(le32_to_cpu(ed->headp) & EDA_HEADP_MASK);
tail_phys = (struct ohci_td *)(long)le32_to_cpu(ed->tailp);
curr_phys = (struct ohci_td *) opipe->td_phys;
pos = (tail_phys - curr_phys + 1) % (opipe->count - 1);
dprintf("pos %d %ld -- %d\n", pos, (tail_phys - curr_phys + 1),
opipe->count);
curr = opipe->td + pos;
head = opipe->td + (head_phys - (struct ohci_td *) opipe->td_phys);
tail = opipe->td + (tail_phys - (struct ohci_td *) opipe->td_phys);
/* dprintf("%08X %08X %08X %08X\n",
opipe->td_phys, head_phys, tail_phys, curr_phys);
dprintf("%08X %08X %08X %08X\n", opipe->td, head, tail, curr); */
if (curr != head) {
ptr = (uint8_t *) ((long)opipe->buf + pipe->mps * pos);
ptr_phys = opipe->buf_phys + pipe->mps * pos;
if (le32_to_cpu(*(uint32_t *)ptr) != 0) {
for (i = 0; i < 8; i++)
data[i] = *(ptr + i);
}
next = curr + 1;
if (next == (opipe->td + opipe->count - 1))
next = opipe->td;
curr->attr = cpu_to_le32(TDA_DP_IN | TDA_ROUNDING | TDA_CC);
curr->next_td = cpu_to_le32(0);
curr->cbp = cpu_to_le32(PTR_U32(ptr_phys));
curr->be = cpu_to_le32(PTR_U32(ptr_phys + pipe->mps - 1));
td_next = ohci_get_td_phys(curr, opipe->td, opipe->td_phys);
dprintf("Connecting %p to %p(phys %08lx) ptr %p, "
"ptr_phys %08lx\n", tail, curr, td_next, ptr, ptr_phys);
tail->next_td = cpu_to_le32(td_next);
mb();
ed->tailp = cpu_to_le32(td_next);
} else
return 0;
dprintf("%s: exit\n", __func__);
return 1;
}
struct usb_hcd_ops ohci_ops = {
.name = "ohci-hcd",
.init = ohci_init,
.exit = ohci_exit,
.detect = ohci_detect,
.disconnect = ohci_disconnect,
.get_pipe = ohci_get_pipe,
.put_pipe = ohci_put_pipe,
.send_ctrl = ohci_send_ctrl,
.transfer_bulk = ohci_transfer_bulk,
.poll_intr = ohci_poll_intr,
.usb_type = USB_OHCI,
.next = NULL,
};
void usb_ohci_register(void)
{
usb_hcd_register(&ohci_ops);
}
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