forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
891 lines
23 KiB
891 lines
23 KiB
// SPDX-License-Identifier: GPL-2.0+ |
|
/* |
|
* Freescale QUICC Engine USB Host Controller Driver |
|
* |
|
* Copyright (c) Freescale Semicondutor, Inc. 2006, 2011. |
|
* Shlomi Gridish <[email protected]> |
|
* Jerry Huang <[email protected]> |
|
* Copyright (c) Logic Product Development, Inc. 2007 |
|
* Peter Barada <[email protected]> |
|
* Copyright (c) MontaVista Software, Inc. 2008. |
|
* Anton Vorontsov <[email protected]> |
|
*/ |
|
|
|
#include <linux/kernel.h> |
|
#include <linux/types.h> |
|
#include <linux/spinlock.h> |
|
#include <linux/delay.h> |
|
#include <linux/errno.h> |
|
#include <linux/list.h> |
|
#include <linux/interrupt.h> |
|
#include <linux/io.h> |
|
#include <linux/usb.h> |
|
#include <linux/usb/hcd.h> |
|
#include <soc/fsl/qe/qe.h> |
|
#include <asm/fsl_gtm.h> |
|
#include "fhci.h" |
|
|
|
static void recycle_frame(struct fhci_usb *usb, struct packet *pkt) |
|
{ |
|
pkt->data = NULL; |
|
pkt->len = 0; |
|
pkt->status = USB_TD_OK; |
|
pkt->info = 0; |
|
pkt->priv_data = NULL; |
|
|
|
cq_put(&usb->ep0->empty_frame_Q, pkt); |
|
} |
|
|
|
/* confirm submitted packet */ |
|
void fhci_transaction_confirm(struct fhci_usb *usb, struct packet *pkt) |
|
{ |
|
struct td *td; |
|
struct packet *td_pkt; |
|
struct ed *ed; |
|
u32 trans_len; |
|
bool td_done = false; |
|
|
|
td = fhci_remove_td_from_frame(usb->actual_frame); |
|
td_pkt = td->pkt; |
|
trans_len = pkt->len; |
|
td->status = pkt->status; |
|
if (td->type == FHCI_TA_IN && td_pkt->info & PKT_DUMMY_PACKET) { |
|
if ((td->data + td->actual_len) && trans_len) |
|
memcpy(td->data + td->actual_len, pkt->data, |
|
trans_len); |
|
cq_put(&usb->ep0->dummy_packets_Q, pkt->data); |
|
} |
|
|
|
recycle_frame(usb, pkt); |
|
|
|
ed = td->ed; |
|
if (ed->mode == FHCI_TF_ISO) { |
|
if (ed->td_list.next->next != &ed->td_list) { |
|
struct td *td_next = |
|
list_entry(ed->td_list.next->next, struct td, |
|
node); |
|
|
|
td_next->start_frame = usb->actual_frame->frame_num; |
|
} |
|
td->actual_len = trans_len; |
|
td_done = true; |
|
} else if ((td->status & USB_TD_ERROR) && |
|
!(td->status & USB_TD_TX_ER_NAK)) { |
|
/* |
|
* There was an error on the transaction (but not NAK). |
|
* If it is fatal error (data underrun, stall, bad pid or 3 |
|
* errors exceeded), mark this TD as done. |
|
*/ |
|
if ((td->status & USB_TD_RX_DATA_UNDERUN) || |
|
(td->status & USB_TD_TX_ER_STALL) || |
|
(td->status & USB_TD_RX_ER_PID) || |
|
(++td->error_cnt >= 3)) { |
|
ed->state = FHCI_ED_HALTED; |
|
td_done = true; |
|
|
|
if (td->status & USB_TD_RX_DATA_UNDERUN) { |
|
fhci_dbg(usb->fhci, "td err fu\n"); |
|
td->toggle = !td->toggle; |
|
td->actual_len += trans_len; |
|
} else { |
|
fhci_dbg(usb->fhci, "td err f!u\n"); |
|
} |
|
} else { |
|
fhci_dbg(usb->fhci, "td err !f\n"); |
|
/* it is not a fatal error -retry this transaction */ |
|
td->nak_cnt = 0; |
|
td->error_cnt++; |
|
td->status = USB_TD_OK; |
|
} |
|
} else if (td->status & USB_TD_TX_ER_NAK) { |
|
/* there was a NAK response */ |
|
fhci_vdbg(usb->fhci, "td nack\n"); |
|
td->nak_cnt++; |
|
td->error_cnt = 0; |
|
td->status = USB_TD_OK; |
|
} else { |
|
/* there was no error on transaction */ |
|
td->error_cnt = 0; |
|
td->nak_cnt = 0; |
|
td->toggle = !td->toggle; |
|
td->actual_len += trans_len; |
|
|
|
if (td->len == td->actual_len) |
|
td_done = true; |
|
} |
|
|
|
if (td_done) |
|
fhci_move_td_from_ed_to_done_list(usb, ed); |
|
} |
|
|
|
/* |
|
* Flush all transmitted packets from BDs |
|
* This routine is called when disabling the USB port to flush all |
|
* transmissions that are already scheduled in the BDs |
|
*/ |
|
void fhci_flush_all_transmissions(struct fhci_usb *usb) |
|
{ |
|
u8 mode; |
|
struct td *td; |
|
|
|
mode = in_8(&usb->fhci->regs->usb_usmod); |
|
clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN); |
|
|
|
fhci_flush_bds(usb); |
|
|
|
while ((td = fhci_peek_td_from_frame(usb->actual_frame)) != NULL) { |
|
struct packet *pkt = td->pkt; |
|
|
|
pkt->status = USB_TD_TX_ER_TIMEOUT; |
|
fhci_transaction_confirm(usb, pkt); |
|
} |
|
|
|
usb->actual_frame->frame_status = FRAME_END_TRANSMISSION; |
|
|
|
/* reset the event register */ |
|
out_be16(&usb->fhci->regs->usb_usber, 0xffff); |
|
/* enable the USB controller */ |
|
out_8(&usb->fhci->regs->usb_usmod, mode | USB_MODE_EN); |
|
} |
|
|
|
/* |
|
* This function forms the packet and transmit the packet. This function |
|
* will handle all endpoint type:ISO,interrupt,control and bulk |
|
*/ |
|
static int add_packet(struct fhci_usb *usb, struct ed *ed, struct td *td) |
|
{ |
|
u32 fw_transaction_time, len = 0; |
|
struct packet *pkt; |
|
u8 *data = NULL; |
|
|
|
/* calcalate data address,len and toggle and then add the transaction */ |
|
if (td->toggle == USB_TD_TOGGLE_CARRY) |
|
td->toggle = ed->toggle_carry; |
|
|
|
switch (ed->mode) { |
|
case FHCI_TF_ISO: |
|
len = td->len; |
|
if (td->type != FHCI_TA_IN) |
|
data = td->data; |
|
break; |
|
case FHCI_TF_CTRL: |
|
case FHCI_TF_BULK: |
|
len = min(td->len - td->actual_len, ed->max_pkt_size); |
|
if (!((td->type == FHCI_TA_IN) && |
|
((len + td->actual_len) == td->len))) |
|
data = td->data + td->actual_len; |
|
break; |
|
case FHCI_TF_INTR: |
|
len = min(td->len, ed->max_pkt_size); |
|
if (!((td->type == FHCI_TA_IN) && |
|
((td->len + CRC_SIZE) >= ed->max_pkt_size))) |
|
data = td->data; |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
if (usb->port_status == FHCI_PORT_FULL) |
|
fw_transaction_time = (((len + PROTOCOL_OVERHEAD) * 11) >> 4); |
|
else |
|
fw_transaction_time = ((len + PROTOCOL_OVERHEAD) * 6); |
|
|
|
/* check if there's enough space in this frame to submit this TD */ |
|
if (usb->actual_frame->total_bytes + len + PROTOCOL_OVERHEAD >= |
|
usb->max_bytes_per_frame) { |
|
fhci_vdbg(usb->fhci, "not enough space in this frame: " |
|
"%d %d %d\n", usb->actual_frame->total_bytes, len, |
|
usb->max_bytes_per_frame); |
|
return -1; |
|
} |
|
|
|
/* check if there's enough time in this frame to submit this TD */ |
|
if (usb->actual_frame->frame_status != FRAME_IS_PREPARED && |
|
(usb->actual_frame->frame_status & FRAME_END_TRANSMISSION || |
|
(fw_transaction_time + usb->sw_transaction_time >= |
|
1000 - fhci_get_sof_timer_count(usb)))) { |
|
fhci_dbg(usb->fhci, "not enough time in this frame\n"); |
|
return -1; |
|
} |
|
|
|
/* update frame object fields before transmitting */ |
|
pkt = cq_get(&usb->ep0->empty_frame_Q); |
|
if (!pkt) { |
|
fhci_dbg(usb->fhci, "there is no empty frame\n"); |
|
return -1; |
|
} |
|
td->pkt = pkt; |
|
|
|
pkt->info = 0; |
|
if (data == NULL) { |
|
data = cq_get(&usb->ep0->dummy_packets_Q); |
|
BUG_ON(!data); |
|
pkt->info = PKT_DUMMY_PACKET; |
|
} |
|
pkt->data = data; |
|
pkt->len = len; |
|
pkt->status = USB_TD_OK; |
|
/* update TD status field before transmitting */ |
|
td->status = USB_TD_INPROGRESS; |
|
/* update actual frame time object with the actual transmission */ |
|
usb->actual_frame->total_bytes += (len + PROTOCOL_OVERHEAD); |
|
fhci_add_td_to_frame(usb->actual_frame, td); |
|
|
|
if (usb->port_status != FHCI_PORT_FULL && |
|
usb->port_status != FHCI_PORT_LOW) { |
|
pkt->status = USB_TD_TX_ER_TIMEOUT; |
|
pkt->len = 0; |
|
fhci_transaction_confirm(usb, pkt); |
|
} else if (fhci_host_transaction(usb, pkt, td->type, ed->dev_addr, |
|
ed->ep_addr, ed->mode, ed->speed, td->toggle)) { |
|
/* remove TD from actual frame */ |
|
list_del_init(&td->frame_lh); |
|
td->status = USB_TD_OK; |
|
if (pkt->info & PKT_DUMMY_PACKET) |
|
cq_put(&usb->ep0->dummy_packets_Q, pkt->data); |
|
recycle_frame(usb, pkt); |
|
usb->actual_frame->total_bytes -= (len + PROTOCOL_OVERHEAD); |
|
fhci_err(usb->fhci, "host transaction failed\n"); |
|
return -1; |
|
} |
|
|
|
return len; |
|
} |
|
|
|
static void move_head_to_tail(struct list_head *list) |
|
{ |
|
struct list_head *node = list->next; |
|
|
|
if (!list_empty(list)) { |
|
list_move_tail(node, list); |
|
} |
|
} |
|
|
|
/* |
|
* This function goes through the endpoint list and schedules the |
|
* transactions within this list |
|
*/ |
|
static int scan_ed_list(struct fhci_usb *usb, |
|
struct list_head *list, enum fhci_tf_mode list_type) |
|
{ |
|
static const int frame_part[4] = { |
|
[FHCI_TF_CTRL] = MAX_BYTES_PER_FRAME, |
|
[FHCI_TF_ISO] = (MAX_BYTES_PER_FRAME * |
|
MAX_PERIODIC_FRAME_USAGE) / 100, |
|
[FHCI_TF_BULK] = MAX_BYTES_PER_FRAME, |
|
[FHCI_TF_INTR] = (MAX_BYTES_PER_FRAME * |
|
MAX_PERIODIC_FRAME_USAGE) / 100 |
|
}; |
|
struct ed *ed; |
|
struct td *td; |
|
int ans = 1; |
|
u32 save_transaction_time = usb->sw_transaction_time; |
|
|
|
list_for_each_entry(ed, list, node) { |
|
td = ed->td_head; |
|
|
|
if (!td || td->status == USB_TD_INPROGRESS) |
|
continue; |
|
|
|
if (ed->state != FHCI_ED_OPER) { |
|
if (ed->state == FHCI_ED_URB_DEL) { |
|
td->status = USB_TD_OK; |
|
fhci_move_td_from_ed_to_done_list(usb, ed); |
|
ed->state = FHCI_ED_SKIP; |
|
} |
|
continue; |
|
} |
|
|
|
/* |
|
* if it isn't interrupt pipe or it is not iso pipe and the |
|
* interval time passed |
|
*/ |
|
if ((list_type == FHCI_TF_INTR || list_type == FHCI_TF_ISO) && |
|
(((usb->actual_frame->frame_num - |
|
td->start_frame) & 0x7ff) < td->interval)) |
|
continue; |
|
|
|
if (add_packet(usb, ed, td) < 0) |
|
continue; |
|
|
|
/* update time stamps in the TD */ |
|
td->start_frame = usb->actual_frame->frame_num; |
|
usb->sw_transaction_time += save_transaction_time; |
|
|
|
if (usb->actual_frame->total_bytes >= |
|
usb->max_bytes_per_frame) { |
|
usb->actual_frame->frame_status = |
|
FRAME_DATA_END_TRANSMISSION; |
|
fhci_push_dummy_bd(usb->ep0); |
|
ans = 0; |
|
break; |
|
} |
|
|
|
if (usb->actual_frame->total_bytes >= frame_part[list_type]) |
|
break; |
|
} |
|
|
|
/* be fair to each ED(move list head around) */ |
|
move_head_to_tail(list); |
|
usb->sw_transaction_time = save_transaction_time; |
|
|
|
return ans; |
|
} |
|
|
|
static u32 rotate_frames(struct fhci_usb *usb) |
|
{ |
|
struct fhci_hcd *fhci = usb->fhci; |
|
|
|
if (!list_empty(&usb->actual_frame->tds_list)) { |
|
if ((((in_be16(&fhci->pram->frame_num) & 0x07ff) - |
|
usb->actual_frame->frame_num) & 0x7ff) > 5) |
|
fhci_flush_actual_frame(usb); |
|
else |
|
return -EINVAL; |
|
} |
|
|
|
usb->actual_frame->frame_status = FRAME_IS_PREPARED; |
|
usb->actual_frame->frame_num = in_be16(&fhci->pram->frame_num) & 0x7ff; |
|
usb->actual_frame->total_bytes = 0; |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* This function schedule the USB transaction and will process the |
|
* endpoint in the following order: iso, interrupt, control and bulk. |
|
*/ |
|
void fhci_schedule_transactions(struct fhci_usb *usb) |
|
{ |
|
int left = 1; |
|
|
|
if (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION) |
|
if (rotate_frames(usb) != 0) |
|
return; |
|
|
|
if (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION) |
|
return; |
|
|
|
if (usb->actual_frame->total_bytes == 0) { |
|
/* |
|
* schedule the next available ISO transfer |
|
*or next stage of the ISO transfer |
|
*/ |
|
scan_ed_list(usb, &usb->hc_list->iso_list, FHCI_TF_ISO); |
|
|
|
/* |
|
* schedule the next available interrupt transfer or |
|
* the next stage of the interrupt transfer |
|
*/ |
|
scan_ed_list(usb, &usb->hc_list->intr_list, FHCI_TF_INTR); |
|
|
|
/* |
|
* schedule the next available control transfer |
|
* or the next stage of the control transfer |
|
*/ |
|
left = scan_ed_list(usb, &usb->hc_list->ctrl_list, |
|
FHCI_TF_CTRL); |
|
} |
|
|
|
/* |
|
* schedule the next available bulk transfer or the next stage of the |
|
* bulk transfer |
|
*/ |
|
if (left > 0) |
|
scan_ed_list(usb, &usb->hc_list->bulk_list, FHCI_TF_BULK); |
|
} |
|
|
|
/* Handles SOF interrupt */ |
|
static void sof_interrupt(struct fhci_hcd *fhci) |
|
{ |
|
struct fhci_usb *usb = fhci->usb_lld; |
|
|
|
if ((usb->port_status == FHCI_PORT_DISABLED) && |
|
(usb->vroot_hub->port.wPortStatus & USB_PORT_STAT_CONNECTION) && |
|
!(usb->vroot_hub->port.wPortChange & USB_PORT_STAT_C_CONNECTION)) { |
|
if (usb->vroot_hub->port.wPortStatus & USB_PORT_STAT_LOW_SPEED) |
|
usb->port_status = FHCI_PORT_LOW; |
|
else |
|
usb->port_status = FHCI_PORT_FULL; |
|
/* Disable IDLE */ |
|
usb->saved_msk &= ~USB_E_IDLE_MASK; |
|
out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk); |
|
} |
|
|
|
gtm_set_exact_timer16(fhci->timer, usb->max_frame_usage, false); |
|
|
|
fhci_host_transmit_actual_frame(usb); |
|
usb->actual_frame->frame_status = FRAME_IS_TRANSMITTED; |
|
|
|
fhci_schedule_transactions(usb); |
|
} |
|
|
|
/* Handles device disconnected interrupt on port */ |
|
void fhci_device_disconnected_interrupt(struct fhci_hcd *fhci) |
|
{ |
|
struct fhci_usb *usb = fhci->usb_lld; |
|
|
|
fhci_dbg(fhci, "-> %s\n", __func__); |
|
|
|
fhci_usb_disable_interrupt(usb); |
|
clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS); |
|
usb->port_status = FHCI_PORT_DISABLED; |
|
|
|
fhci_stop_sof_timer(fhci); |
|
|
|
/* Enable IDLE since we want to know if something comes along */ |
|
usb->saved_msk |= USB_E_IDLE_MASK; |
|
out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk); |
|
|
|
usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_CONNECTION; |
|
usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_CONNECTION; |
|
usb->max_bytes_per_frame = 0; |
|
fhci_usb_enable_interrupt(usb); |
|
|
|
fhci_dbg(fhci, "<- %s\n", __func__); |
|
} |
|
|
|
/* detect a new device connected on the USB port */ |
|
void fhci_device_connected_interrupt(struct fhci_hcd *fhci) |
|
{ |
|
|
|
struct fhci_usb *usb = fhci->usb_lld; |
|
int state; |
|
int ret; |
|
|
|
fhci_dbg(fhci, "-> %s\n", __func__); |
|
|
|
fhci_usb_disable_interrupt(usb); |
|
state = fhci_ioports_check_bus_state(fhci); |
|
|
|
/* low-speed device was connected to the USB port */ |
|
if (state == 1) { |
|
ret = qe_usb_clock_set(fhci->lowspeed_clk, USB_CLOCK >> 3); |
|
if (ret) { |
|
fhci_warn(fhci, "Low-Speed device is not supported, " |
|
"try use BRGx\n"); |
|
goto out; |
|
} |
|
|
|
usb->port_status = FHCI_PORT_LOW; |
|
setbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS); |
|
usb->vroot_hub->port.wPortStatus |= |
|
(USB_PORT_STAT_LOW_SPEED | |
|
USB_PORT_STAT_CONNECTION); |
|
usb->vroot_hub->port.wPortChange |= |
|
USB_PORT_STAT_C_CONNECTION; |
|
usb->max_bytes_per_frame = |
|
(MAX_BYTES_PER_FRAME >> 3) - 7; |
|
fhci_port_enable(usb); |
|
} else if (state == 2) { |
|
ret = qe_usb_clock_set(fhci->fullspeed_clk, USB_CLOCK); |
|
if (ret) { |
|
fhci_warn(fhci, "Full-Speed device is not supported, " |
|
"try use CLKx\n"); |
|
goto out; |
|
} |
|
|
|
usb->port_status = FHCI_PORT_FULL; |
|
clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS); |
|
usb->vroot_hub->port.wPortStatus &= |
|
~USB_PORT_STAT_LOW_SPEED; |
|
usb->vroot_hub->port.wPortStatus |= |
|
USB_PORT_STAT_CONNECTION; |
|
usb->vroot_hub->port.wPortChange |= |
|
USB_PORT_STAT_C_CONNECTION; |
|
usb->max_bytes_per_frame = (MAX_BYTES_PER_FRAME - 15); |
|
fhci_port_enable(usb); |
|
} |
|
out: |
|
fhci_usb_enable_interrupt(usb); |
|
fhci_dbg(fhci, "<- %s\n", __func__); |
|
} |
|
|
|
irqreturn_t fhci_frame_limit_timer_irq(int irq, void *_hcd) |
|
{ |
|
struct usb_hcd *hcd = _hcd; |
|
struct fhci_hcd *fhci = hcd_to_fhci(hcd); |
|
struct fhci_usb *usb = fhci->usb_lld; |
|
|
|
spin_lock(&fhci->lock); |
|
|
|
gtm_set_exact_timer16(fhci->timer, 1000, false); |
|
|
|
if (usb->actual_frame->frame_status == FRAME_IS_TRANSMITTED) { |
|
usb->actual_frame->frame_status = FRAME_TIMER_END_TRANSMISSION; |
|
fhci_push_dummy_bd(usb->ep0); |
|
} |
|
|
|
fhci_schedule_transactions(usb); |
|
|
|
spin_unlock(&fhci->lock); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
/* Cancel transmission on the USB endpoint */ |
|
static void abort_transmission(struct fhci_usb *usb) |
|
{ |
|
fhci_dbg(usb->fhci, "-> %s\n", __func__); |
|
/* issue stop Tx command */ |
|
qe_issue_cmd(QE_USB_STOP_TX, QE_CR_SUBBLOCK_USB, EP_ZERO, 0); |
|
/* flush Tx FIFOs */ |
|
out_8(&usb->fhci->regs->usb_uscom, USB_CMD_FLUSH_FIFO | EP_ZERO); |
|
udelay(1000); |
|
/* reset Tx BDs */ |
|
fhci_flush_bds(usb); |
|
/* issue restart Tx command */ |
|
qe_issue_cmd(QE_USB_RESTART_TX, QE_CR_SUBBLOCK_USB, EP_ZERO, 0); |
|
fhci_dbg(usb->fhci, "<- %s\n", __func__); |
|
} |
|
|
|
irqreturn_t fhci_irq(struct usb_hcd *hcd) |
|
{ |
|
struct fhci_hcd *fhci = hcd_to_fhci(hcd); |
|
struct fhci_usb *usb; |
|
u16 usb_er = 0; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&fhci->lock, flags); |
|
|
|
usb = fhci->usb_lld; |
|
|
|
usb_er |= in_be16(&usb->fhci->regs->usb_usber) & |
|
in_be16(&usb->fhci->regs->usb_usbmr); |
|
|
|
/* clear event bits for next time */ |
|
out_be16(&usb->fhci->regs->usb_usber, usb_er); |
|
|
|
fhci_dbg_isr(fhci, usb_er); |
|
|
|
if (usb_er & USB_E_RESET_MASK) { |
|
if ((usb->port_status == FHCI_PORT_FULL) || |
|
(usb->port_status == FHCI_PORT_LOW)) { |
|
fhci_device_disconnected_interrupt(fhci); |
|
usb_er &= ~USB_E_IDLE_MASK; |
|
} else if (usb->port_status == FHCI_PORT_WAITING) { |
|
usb->port_status = FHCI_PORT_DISCONNECTING; |
|
|
|
/* Turn on IDLE since we want to disconnect */ |
|
usb->saved_msk |= USB_E_IDLE_MASK; |
|
out_be16(&usb->fhci->regs->usb_usber, |
|
usb->saved_msk); |
|
} else if (usb->port_status == FHCI_PORT_DISABLED) { |
|
if (fhci_ioports_check_bus_state(fhci) == 1) |
|
fhci_device_connected_interrupt(fhci); |
|
} |
|
usb_er &= ~USB_E_RESET_MASK; |
|
} |
|
|
|
if (usb_er & USB_E_MSF_MASK) { |
|
abort_transmission(fhci->usb_lld); |
|
usb_er &= ~USB_E_MSF_MASK; |
|
} |
|
|
|
if (usb_er & (USB_E_SOF_MASK | USB_E_SFT_MASK)) { |
|
sof_interrupt(fhci); |
|
usb_er &= ~(USB_E_SOF_MASK | USB_E_SFT_MASK); |
|
} |
|
|
|
if (usb_er & USB_E_TXB_MASK) { |
|
fhci_tx_conf_interrupt(fhci->usb_lld); |
|
usb_er &= ~USB_E_TXB_MASK; |
|
} |
|
|
|
if (usb_er & USB_E_TXE1_MASK) { |
|
fhci_tx_conf_interrupt(fhci->usb_lld); |
|
usb_er &= ~USB_E_TXE1_MASK; |
|
} |
|
|
|
if (usb_er & USB_E_IDLE_MASK) { |
|
if (usb->port_status == FHCI_PORT_DISABLED) { |
|
usb_er &= ~USB_E_RESET_MASK; |
|
fhci_device_connected_interrupt(fhci); |
|
} else if (usb->port_status == |
|
FHCI_PORT_DISCONNECTING) { |
|
/* XXX usb->port_status = FHCI_PORT_WAITING; */ |
|
/* Disable IDLE */ |
|
usb->saved_msk &= ~USB_E_IDLE_MASK; |
|
out_be16(&usb->fhci->regs->usb_usbmr, |
|
usb->saved_msk); |
|
} else { |
|
fhci_dbg_isr(fhci, -1); |
|
} |
|
|
|
usb_er &= ~USB_E_IDLE_MASK; |
|
} |
|
|
|
spin_unlock_irqrestore(&fhci->lock, flags); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
|
|
/* |
|
* Process normal completions(error or success) and clean the schedule. |
|
* |
|
* This is the main path for handing urbs back to drivers. The only other patth |
|
* is process_del_list(),which unlinks URBs by scanning EDs,instead of scanning |
|
* the (re-reversed) done list as this does. |
|
*/ |
|
static void process_done_list(unsigned long data) |
|
{ |
|
struct urb *urb; |
|
struct ed *ed; |
|
struct td *td; |
|
struct urb_priv *urb_priv; |
|
struct fhci_hcd *fhci = (struct fhci_hcd *)data; |
|
|
|
disable_irq(fhci->timer->irq); |
|
disable_irq(fhci_to_hcd(fhci)->irq); |
|
spin_lock(&fhci->lock); |
|
|
|
td = fhci_remove_td_from_done_list(fhci->hc_list); |
|
while (td != NULL) { |
|
urb = td->urb; |
|
urb_priv = urb->hcpriv; |
|
ed = td->ed; |
|
|
|
/* update URB's length and status from TD */ |
|
fhci_done_td(urb, td); |
|
urb_priv->tds_cnt++; |
|
|
|
/* |
|
* if all this urb's TDs are done, call complete() |
|
* Interrupt transfers are the onley special case: |
|
* they are reissued,until "deleted" by usb_unlink_urb |
|
* (real work done in a SOF intr, by process_del_list) |
|
*/ |
|
if (urb_priv->tds_cnt == urb_priv->num_of_tds) { |
|
fhci_urb_complete_free(fhci, urb); |
|
} else if (urb_priv->state == URB_DEL && |
|
ed->state == FHCI_ED_SKIP) { |
|
fhci_del_ed_list(fhci, ed); |
|
ed->state = FHCI_ED_OPER; |
|
} else if (ed->state == FHCI_ED_HALTED) { |
|
urb_priv->state = URB_DEL; |
|
ed->state = FHCI_ED_URB_DEL; |
|
fhci_del_ed_list(fhci, ed); |
|
ed->state = FHCI_ED_OPER; |
|
} |
|
|
|
td = fhci_remove_td_from_done_list(fhci->hc_list); |
|
} |
|
|
|
spin_unlock(&fhci->lock); |
|
enable_irq(fhci->timer->irq); |
|
enable_irq(fhci_to_hcd(fhci)->irq); |
|
} |
|
|
|
DECLARE_TASKLET_OLD(fhci_tasklet, process_done_list); |
|
|
|
/* transfer complted callback */ |
|
u32 fhci_transfer_confirm_callback(struct fhci_hcd *fhci) |
|
{ |
|
if (!fhci->process_done_task->state) |
|
tasklet_schedule(fhci->process_done_task); |
|
return 0; |
|
} |
|
|
|
/* |
|
* adds urb to the endpoint descriptor list |
|
* arguments: |
|
* fhci data structure for the Low level host controller |
|
* ep USB Host endpoint data structure |
|
* urb USB request block data structure |
|
*/ |
|
void fhci_queue_urb(struct fhci_hcd *fhci, struct urb *urb) |
|
{ |
|
struct ed *ed = urb->ep->hcpriv; |
|
struct urb_priv *urb_priv = urb->hcpriv; |
|
u32 data_len = urb->transfer_buffer_length; |
|
int urb_state = 0; |
|
int toggle = 0; |
|
u8 *data; |
|
u16 cnt = 0; |
|
|
|
if (ed == NULL) { |
|
ed = fhci_get_empty_ed(fhci); |
|
ed->dev_addr = usb_pipedevice(urb->pipe); |
|
ed->ep_addr = usb_pipeendpoint(urb->pipe); |
|
switch (usb_pipetype(urb->pipe)) { |
|
case PIPE_CONTROL: |
|
ed->mode = FHCI_TF_CTRL; |
|
break; |
|
case PIPE_BULK: |
|
ed->mode = FHCI_TF_BULK; |
|
break; |
|
case PIPE_INTERRUPT: |
|
ed->mode = FHCI_TF_INTR; |
|
break; |
|
case PIPE_ISOCHRONOUS: |
|
ed->mode = FHCI_TF_ISO; |
|
break; |
|
default: |
|
break; |
|
} |
|
ed->speed = (urb->dev->speed == USB_SPEED_LOW) ? |
|
FHCI_LOW_SPEED : FHCI_FULL_SPEED; |
|
ed->max_pkt_size = usb_endpoint_maxp(&urb->ep->desc); |
|
urb->ep->hcpriv = ed; |
|
fhci_dbg(fhci, "new ep speed=%d max_pkt_size=%d\n", |
|
ed->speed, ed->max_pkt_size); |
|
} |
|
|
|
/* for ISO transfer calculate start frame index */ |
|
if (ed->mode == FHCI_TF_ISO) { |
|
/* Ignore the possibility of underruns */ |
|
urb->start_frame = ed->td_head ? ed->next_iso : |
|
get_frame_num(fhci); |
|
ed->next_iso = (urb->start_frame + urb->interval * |
|
urb->number_of_packets) & 0x07ff; |
|
} |
|
|
|
/* |
|
* OHCI handles the DATA toggle itself,we just use the USB |
|
* toggle bits |
|
*/ |
|
if (usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), |
|
usb_pipeout(urb->pipe))) |
|
toggle = USB_TD_TOGGLE_CARRY; |
|
else { |
|
toggle = USB_TD_TOGGLE_DATA0; |
|
usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), |
|
usb_pipeout(urb->pipe), 1); |
|
} |
|
|
|
urb_priv->tds_cnt = 0; |
|
urb_priv->ed = ed; |
|
if (data_len > 0) |
|
data = urb->transfer_buffer; |
|
else |
|
data = NULL; |
|
|
|
switch (ed->mode) { |
|
case FHCI_TF_BULK: |
|
if (urb->transfer_flags & URB_ZERO_PACKET && |
|
urb->transfer_buffer_length > 0 && |
|
((urb->transfer_buffer_length % |
|
usb_endpoint_maxp(&urb->ep->desc)) == 0)) |
|
urb_state = US_BULK0; |
|
while (data_len > 4096) { |
|
fhci_td_fill(fhci, urb, urb_priv, ed, cnt, |
|
usb_pipeout(urb->pipe) ? FHCI_TA_OUT : |
|
FHCI_TA_IN, |
|
cnt ? USB_TD_TOGGLE_CARRY : |
|
toggle, |
|
data, 4096, 0, 0, true); |
|
data += 4096; |
|
data_len -= 4096; |
|
cnt++; |
|
} |
|
|
|
fhci_td_fill(fhci, urb, urb_priv, ed, cnt, |
|
usb_pipeout(urb->pipe) ? FHCI_TA_OUT : FHCI_TA_IN, |
|
cnt ? USB_TD_TOGGLE_CARRY : toggle, |
|
data, data_len, 0, 0, true); |
|
cnt++; |
|
|
|
if (urb->transfer_flags & URB_ZERO_PACKET && |
|
cnt < urb_priv->num_of_tds) { |
|
fhci_td_fill(fhci, urb, urb_priv, ed, cnt, |
|
usb_pipeout(urb->pipe) ? FHCI_TA_OUT : |
|
FHCI_TA_IN, |
|
USB_TD_TOGGLE_CARRY, NULL, 0, 0, 0, true); |
|
cnt++; |
|
} |
|
break; |
|
case FHCI_TF_INTR: |
|
urb->start_frame = get_frame_num(fhci) + 1; |
|
fhci_td_fill(fhci, urb, urb_priv, ed, cnt++, |
|
usb_pipeout(urb->pipe) ? FHCI_TA_OUT : FHCI_TA_IN, |
|
USB_TD_TOGGLE_DATA0, data, data_len, |
|
urb->interval, urb->start_frame, true); |
|
break; |
|
case FHCI_TF_CTRL: |
|
ed->dev_addr = usb_pipedevice(urb->pipe); |
|
ed->max_pkt_size = usb_endpoint_maxp(&urb->ep->desc); |
|
|
|
/* setup stage */ |
|
fhci_td_fill(fhci, urb, urb_priv, ed, cnt++, FHCI_TA_SETUP, |
|
USB_TD_TOGGLE_DATA0, urb->setup_packet, 8, 0, 0, true); |
|
|
|
/* data stage */ |
|
if (data_len > 0) { |
|
fhci_td_fill(fhci, urb, urb_priv, ed, cnt++, |
|
usb_pipeout(urb->pipe) ? FHCI_TA_OUT : |
|
FHCI_TA_IN, |
|
USB_TD_TOGGLE_DATA1, data, data_len, 0, 0, |
|
true); |
|
} |
|
|
|
/* status stage */ |
|
if (data_len > 0) |
|
fhci_td_fill(fhci, urb, urb_priv, ed, cnt++, |
|
(usb_pipeout(urb->pipe) ? FHCI_TA_IN : |
|
FHCI_TA_OUT), |
|
USB_TD_TOGGLE_DATA1, data, 0, 0, 0, true); |
|
else |
|
fhci_td_fill(fhci, urb, urb_priv, ed, cnt++, |
|
FHCI_TA_IN, |
|
USB_TD_TOGGLE_DATA1, data, 0, 0, 0, true); |
|
|
|
urb_state = US_CTRL_SETUP; |
|
break; |
|
case FHCI_TF_ISO: |
|
for (cnt = 0; cnt < urb->number_of_packets; cnt++) { |
|
u16 frame = urb->start_frame; |
|
|
|
/* |
|
* FIXME scheduling should handle frame counter |
|
* roll-around ... exotic case (and OHCI has |
|
* a 2^16 iso range, vs other HCs max of 2^10) |
|
*/ |
|
frame += cnt * urb->interval; |
|
frame &= 0x07ff; |
|
fhci_td_fill(fhci, urb, urb_priv, ed, cnt, |
|
usb_pipeout(urb->pipe) ? FHCI_TA_OUT : |
|
FHCI_TA_IN, |
|
USB_TD_TOGGLE_DATA0, |
|
data + urb->iso_frame_desc[cnt].offset, |
|
urb->iso_frame_desc[cnt].length, |
|
urb->interval, frame, true); |
|
} |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
/* |
|
* set the state of URB |
|
* control pipe:3 states -- setup,data,status |
|
* interrupt and bulk pipe:1 state -- data |
|
*/ |
|
urb->pipe &= ~0x1f; |
|
urb->pipe |= urb_state & 0x1f; |
|
|
|
urb_priv->state = URB_INPROGRESS; |
|
|
|
if (!ed->td_head) { |
|
ed->state = FHCI_ED_OPER; |
|
switch (ed->mode) { |
|
case FHCI_TF_CTRL: |
|
list_add(&ed->node, &fhci->hc_list->ctrl_list); |
|
break; |
|
case FHCI_TF_BULK: |
|
list_add(&ed->node, &fhci->hc_list->bulk_list); |
|
break; |
|
case FHCI_TF_INTR: |
|
list_add(&ed->node, &fhci->hc_list->intr_list); |
|
break; |
|
case FHCI_TF_ISO: |
|
list_add(&ed->node, &fhci->hc_list->iso_list); |
|
break; |
|
default: |
|
break; |
|
} |
|
} |
|
|
|
fhci_add_tds_to_ed(ed, urb_priv->tds, urb_priv->num_of_tds); |
|
fhci->active_urbs++; |
|
}
|
|
|