/*
* FIFO ctrl
*/
static void usbhsf_send_terminator(struct usbhs_pipe *pipe,
struct usbhs_fifo *fifo)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
usbhs_bset(priv, fifo->ctr, BVAL, BVAL);
}
/*
* PIPEnTRN/PIPEnTRE functions
*/
static void usbhsp_pipe_trn_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct device *dev = usbhs_priv_to_dev(priv);
int num = usbhs_pipe_number(pipe);
u16 reg;
/*
* It is impossible to calculate address,
* since PIPEnTRN addresses were mapped randomly.
*/
#define CASE_PIPExTRN(a) \
case 0x ## a: \
reg = PIPE ## a ## TRN; \
break;
switch (num) {
CASE_PIPExTRN(1);
CASE_PIPExTRN(2);
CASE_PIPExTRN(3);
CASE_PIPExTRN(4);
CASE_PIPExTRN(5);
CASE_PIPExTRN(B);
CASE_PIPExTRN(C);
CASE_PIPExTRN(D);
CASE_PIPExTRN(E);
CASE_PIPExTRN(F);
CASE_PIPExTRN(9);
CASE_PIPExTRN(A);
default:
dev_err(dev, "unknown pipe (%d)\n", num);
return;
}
__usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val);
}
static void usbhsf_fifo_unselect(struct usbhs_pipe *pipe,
struct usbhs_fifo *fifo)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
usbhs_pipe_select_fifo(pipe, NULL);
usbhs_write(priv, fifo->sel, 0);
}
/*
* packet control function
*/
static int usbhsf_null_handle(struct usbhs_pkt *pkt, int *is_done)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe);
struct device *dev = usbhs_priv_to_dev(priv);
dev_err(dev, "null handler\n");
return -EINVAL;
}
static void usbhsf_fifo_clear(struct usbhs_pipe *pipe,
struct usbhs_fifo *fifo)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
if (!usbhs_pipe_is_dcp(pipe))
usbhsf_fifo_barrier(priv, fifo);
usbhs_write(priv, fifo->ctr, BCLR);
}
static u16 usbhsp_pipectrl_get(struct usbhs_pipe *pipe)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
int offset = usbhsp_addr_offset(pipe);
if (usbhs_pipe_is_dcp(pipe))
return usbhs_read(priv, DCPCTR);
else
return usbhs_read(priv, PIPEnCTR + offset);
}
/*
* DCPCTR/PIPEnCTR functions
*/
static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
int offset = usbhsp_addr_offset(pipe);
if (usbhs_pipe_is_dcp(pipe))
usbhs_bset(priv, DCPCTR, mask, val);
else
usbhs_bset(priv, PIPEnCTR + offset, mask, val);
}
static u16 __usbhsp_pipe_xxx_get(struct usbhs_pipe *pipe,
u16 dcp_reg, u16 pipe_reg)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
if (usbhs_pipe_is_dcp(pipe))
return usbhs_read(priv, dcp_reg);
else
return usbhs_read(priv, pipe_reg);
}
/*
* DCP/PIPE functions
*/
static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe,
u16 dcp_reg, u16 pipe_reg,
u16 mask, u16 val)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
if (usbhs_pipe_is_dcp(pipe))
usbhs_bset(priv, dcp_reg, mask, val);
else
usbhs_bset(priv, pipe_reg, mask, val);
}
/*
* DCP status stage
*/
static int usbhs_dcp_dir_switch_to_write(struct usbhs_pkt *pkt, int *is_done)
{
struct usbhs_pipe *pipe = pkt->pipe;
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */
struct device *dev = usbhs_priv_to_dev(priv);
int ret;
usbhs_pipe_disable(pipe);
ret = usbhsf_fifo_select(pipe, fifo, 1);
if (ret < 0) {
dev_err(dev, "%s() faile\n",
static int usbhsf_pkt_handler(struct usbhs_pipe *pipe, int type)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct usbhs_pkt *pkt;
struct device *dev = usbhs_priv_to_dev(priv);
int (*func)(struct usbhs_pkt *pkt, int *is_done);
unsigned long flags;
int ret = 0;
int is_done = 0;
/******************** spin lock ********************/
usbhs_lock(priv, flags);
pkt = __usbhsf_pkt_get(pipe);
if (!pkt)
goto __usbhs_pkt_handler_end;
switch (type) {
case USBHSF_PKT_PREPARE:
func = pkt->handler->prepare;
break;
case USBHSF_PKT_TRY_RUN:
func = pkt->handler->try_run;
break;
case USBHSF_PKT_DMA_DONE:
func = pkt->handler->dma_done;
break;
default:
dev_err(dev, "unknown pkt hander\n");
goto __usbhs_pkt_handler_end;
}
ret = func(pkt, &is_done);
if (is_done)
__usbhsf_pkt_del(pkt);
__usbhs_pkt_handler_end:
usbhs_unlock(priv, flags);
/******************** spin unlock ******************/
if (is_done) {
pkt->done(priv, pkt);
usbhs_pkt_start(pipe);
}
return ret;
}
struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
unsigned long flags;
/******************** spin lock ********************/
usbhs_lock(priv, flags);
if (!pkt)
pkt = __usbhsf_pkt_get(pipe);
if (pkt)
__usbhsf_pkt_del(pkt);
usbhs_unlock(priv, flags);
/******************** spin unlock ******************/
return pkt;
}
void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
void (*done)(struct usbhs_priv *priv,
struct usbhs_pkt *pkt),
void *buf, int len, int zero, int sequence)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct device *dev = usbhs_priv_to_dev(priv);
unsigned long flags;
if (!done) {
dev_err(dev, "no done function\n");
return;
}
/******************** spin lock ********************/
usbhs_lock(priv, flags);
if (!pipe->handler) {
dev_err(dev, "no handler function\n");
pipe->handler = &usbhsf_null_handler;
}
list_move_tail(&pkt->node, &pipe->list);
/*
* each pkt must hold own handler.
* because handler might be changed by its situation.
* dma handler -> pio handler.
*/
pkt->pipe = pipe;
pkt->buf = buf;
pkt->handler = pipe->handler;
pkt->length = len;
pkt->zero = zero;
pkt->actual = 0;
pkt->done = done;
pkt->sequence = sequence;
usbhs_unlock(priv, flags);
/******************** spin unlock ******************/
}
/*
* pipe control functions
*/
static void usbhsp_pipe_select(struct usbhs_pipe *pipe)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
/*
* On pipe, this is necessary before
* accesses to below registers.
*
* PIPESEL : usbhsp_pipe_select
* PIPECFG : usbhsp_pipe_cfg_xxx
* PIPEBUF : usbhsp_pipe_buf_xxx
* PIPEMAXP : usbhsp_pipe_maxp_xxx
* PIPEPERI
*/
/*
* if pipe is dcp, no pipe is selected.
* it is no problem, because dcp have its register
*/
usbhs_write(priv, PIPESEL, 0xF & usbhs_pipe_number(pipe));
}
static int usbhsf_fifo_select(struct usbhs_pipe *pipe,
struct usbhs_fifo *fifo,
int write)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct device *dev = usbhs_priv_to_dev(priv);
int timeout = 1024;
u16 mask = ((1 << 5) | 0xF); /* mask of ISEL | CURPIPE */
u16 base = usbhs_pipe_number(pipe); /* CURPIPE */
if (usbhs_pipe_is_busy(pipe) ||
usbhsf_fifo_is_busy(fifo))
return -EBUSY;
if (usbhs_pipe_is_dcp(pipe)) {
base |= (1 == write) << 5; /* ISEL */
if (usbhs_mod_is_host(priv))
usbhs_dcp_dir_for_host(pipe, write);
}
/* "base" will be used below */
if (usbhs_get_dparam(priv, has_sudmac) && !usbhsf_is_cfifo(priv, fifo))
usbhs_write(priv, fifo->sel, base);
else
usbhs_write(priv, fifo->sel, base | MBW_32);
/* check ISEL and CURPIPE value */
while (timeout--) {
if (base == (mask & usbhs_read(priv, fifo->sel))) {
usbhs_pipe_select_fifo(pipe, fifo);
return 0;
}
udelay(10);
}
dev_err(dev, "fifo select error\n");
return -EIO;
}
static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
int timeout = 1024;
u16 val;
/*
* make sure....
*
* Modify these bits when CSSTS = 0, PID = NAK, and no pipe number is
* specified by the CURPIPE bits.
* When changing the setting of this bit after changing
* the PID bits for the selected pipe from BUF to NAK,
* check that CSSTS = 0 and PBUSY = 0.
*/
/*
* CURPIPE bit = 0
*
* see also
* "Operation"
* - "Pipe Control"
* - "Pipe Control Registers Switching Procedure"
*/
usbhs_write(priv, CFIFOSEL, 0);
usbhs_pipe_disable(pipe);
do {
val = usbhsp_pipectrl_get(pipe);
val &= CSSTS | PID_MASK;
if (!val)
return 0;
udelay(10);
} while (timeout--);
return -EBUSY;
}
