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using BRDY interruption for handling IN transfers.

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This commit is contained in:
kkitayam 2021-03-27 14:42:19 +09:00
parent f8cf88f918
commit e010ea30e5
1 changed files with 62 additions and 166 deletions
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228
src/portable/renesas/usba/dcd_usba.c
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@ -200,9 +200,9 @@ static volatile uint16_t* ep_addr_to_pipectr(uint8_t rhport, unsigned ep_addr)
{
(void)rhport;
volatile uint16_t *ctr = NULL;
const unsigned epn = ep_addr & 0xFu;
const unsigned epn = tu_edpt_number(ep_addr);
if (epn) {
const unsigned dir = (ep_addr & TUSB_DIR_IN_MASK) ? TUSB_DIR_IN : TUSB_DIR_OUT;
const unsigned dir = tu_edpt_dir(ep_addr);
const unsigned num = _dcd.ep[dir][epn];
if (num) {
ctr = (volatile uint16_t*)&USB0.PIPE1CTR.WORD;
@ -234,39 +234,11 @@ static unsigned select_pipe(unsigned num, unsigned attr)
/* 1 less than 64 bytes were written
* 2 no bytes were written
* 0 mps bytes were written */
static int write_fifo(volatile void *fifo, pipe_state_t* pipe, unsigned mps, unsigned ofs)
{
unsigned rem = pipe->remaining - ofs;
if (!rem) return 2;
unsigned len = (rem < mps) ? rem: mps;
hw_fifo_t *reg = (hw_fifo_t*)fifo;
uintptr_t addr = pipe->addr + pipe->length - rem;
if (addr & 1u) {
/* addr is not 2-byte aligned */
reg->u8 = *(const uint8_t *)addr;
++addr;
--len;
}
while (len >= 2) {
reg->u16 = *(const uint16_t *)addr;
addr += 2;
len -= 2;
}
if (len) {
reg->u8 = *(const uint8_t *)addr;
++addr;
}
if (rem < mps) return 1;
return 0;
}
#if 1
static int write_fifo2(volatile void *fifo, pipe_state_t* pipe, unsigned mps)
static int write_fifo(volatile void *fifo, pipe_state_t* pipe, unsigned mps)
{
unsigned rem = pipe->remaining;
if (!rem) return 2;
unsigned len = (rem < mps) ? rem: mps;
pipe->remaining = rem - len;
unsigned len = TU_MIN(rem, mps);
hw_fifo_t *reg = (hw_fifo_t*)fifo;
uintptr_t addr = pipe->addr + pipe->length - rem;
@ -288,7 +260,6 @@ static int write_fifo2(volatile void *fifo, pipe_state_t* pipe, unsigned mps)
if (rem < mps) return 1;
return 0;
}
#endif
/* 1 if the number of bytes read is less than 64 bytes
* 0 otherwise */
@ -359,7 +330,7 @@ static bool process_edpt0_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer,
pipe->data = USB0.DCPCTR.BIT.SQMON;
if (ep_addr) { /* IN */
TU_ASSERT(USB0.DCPCTR.BIT.BSTS && (USB0.USBREQ.WORD & 0x80));
if (write_fifo(&USB0.CFIFO.WORD, pipe, 64, 0)) {
if (write_fifo(&USB0.CFIFO.WORD, pipe, 64)) {
USB0.CFIFOCTR.WORD = USB_FIFOCTR_BVAL;
}
}
@ -372,7 +343,6 @@ static bool process_edpt0_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer,
pipe->remaining = 0;
pipe->data = USB0.DCPCTR.BIT.SQMON;
USB0.DCPCTR.WORD = USB_PIPECTR_CCPL | USB_PIPECTR_PID_BUF;
// TU_LOG1("Z %x\r\n", USB0.DCPCTR.WORD);
}
return true;
}
@ -382,9 +352,8 @@ static void process_edpt0_bemp(uint8_t rhport)
pipe_state_t *pipe = &_dcd.pipe[0];
unsigned data = pipe->data;
if (USB0.DCPCTR.BIT.SQMON == data) {
TU_LOG1("W %x\r\n", USB0.DCPCTR.WORD);
/* retry transfer */
int r = write_fifo(&USB0.CFIFO.WORD, &_dcd.pipe[0], 64, 0);
int r = write_fifo(&USB0.CFIFO.WORD, &_dcd.pipe[0], 64);
if (r) USB0.CFIFOCTR.WORD = USB_FIFOCTR_BVAL;
return;
}
@ -392,16 +361,14 @@ static void process_edpt0_bemp(uint8_t rhport)
if (rem > 64) {
pipe->remaining = rem - 64;
pipe->data = data ^ 1;
TU_LOG1("Y %d %x\r\n", rem - 64, USB0.DCPCTR.WORD);
int r = write_fifo(&USB0.CFIFO.WORD, &_dcd.pipe[0], 64, 0);
int r = write_fifo(&USB0.CFIFO.WORD, &_dcd.pipe[0], 64);
if (r) USB0.CFIFOCTR.WORD = USB_FIFOCTR_BVAL;
return;
}
pipe->addr = 0;
pipe->remaining = 0;
dcd_event_xfer_complete(rhport, tu_edpt_addr(0, TUSB_DIR_IN),
pipe->length, XFER_RESULT_SUCCESS, true);
// TU_LOG1("c\r\n");
pipe->length, XFER_RESULT_SUCCESS, true);
}
static void process_edpt0_brdy(uint8_t rhport)
@ -414,8 +381,7 @@ static void process_edpt0_brdy(uint8_t rhport)
}
dcd_event_xfer_complete(rhport, tu_edpt_addr(0, TUSB_DIR_OUT),
_dcd.pipe[0].length - _dcd.pipe[0].remaining,
XFER_RESULT_SUCCESS, true);
// TU_LOG1("c\r\n");
XFER_RESULT_SUCCESS, true);
}
}
@ -423,8 +389,8 @@ static bool process_pipe_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer,
{
(void)rhport;
const unsigned epn = ep_addr & 0xFu;
const unsigned dir = (ep_addr & TUSB_DIR_IN_MASK) ? TUSB_DIR_IN : TUSB_DIR_OUT;
const unsigned epn = tu_edpt_number(ep_addr);
const unsigned dir = tu_edpt_dir(ep_addr);
const unsigned num = _dcd.ep[dir][epn];
TU_ASSERT(num);
@ -439,120 +405,61 @@ static bool process_pipe_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer,
if (dir) { /* IN */
USB0.D0FIFOSEL.WORD = num | USB_FIFOSEL_MBW_16;
while (!(USB0.D0FIFOSEL.BIT.CURPIPE != num)) ;
#if 0
unsigned ofs = 0;
if (USB0.PIPECFG.BIT.DBLB && (total_bytes > mps)) {
write_fifo(&USB0.D0FIFO.WORD, pipe, mps, 0);
}
if (write_fifo(&USB0.D0FIFO.WORD, pipe, mps, ofs)) {
USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BVAL;
}
#else
if (USB0.PIPECFG.BIT.DBLB && (total_bytes > mps)) {
write_fifo2(&USB0.D0FIFO.WORD, pipe, mps);
wait_for_pipe_ready();
}
if (write_fifo2(&USB0.D0FIFO.WORD, pipe, mps)) {
USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BVAL;
}
#endif
int r = write_fifo(&USB0.D0FIFO.WORD, pipe, mps);
if (r) USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BVAL;
USB0.D0FIFOSEL.WORD = 0;
} else {
volatile reg_pipetre_t *pt = get_pipetre(num);
if (pt) {
volatile uint16_t *ctr = get_pipectr(num);
if (*ctr & 0x3) *ctr = USB_PIPECTR_PID_NAK;
pt->TRE = 1u << 8;
pt->TRE = TU_BIT(8);
pt->TRN = (total_bytes + mps - 1) / mps;
pt->TRENB = 1;
*ctr = USB_PIPECTR_PID_BUF;
}
}
TU_LOG1("X %x %d\r\n", ep_addr, total_bytes);
//TU_LOG1("X %x %d\r\n", ep_addr, total_bytes);
return true;
}
#if 0
static void process_pipe_bemp(uint8_t rhport, unsigned num)
{
pipe_state_t *pipe = &_dcd.pipe[num];
unsigned rem = pipe->remaining;
USB0.PIPESEL.WORD = num;
const unsigned mps = USB0.PIPEMAXP.WORD;
if (rem > mps) {
rem -= mps;
pipe->remaining = rem;
if (USB0.PIPECFG.BIT.DBLB) {
if (rem > mps) {
unsigned ctr = select_pipe(num, USB_FIFOSEL_MBW_16);
int r = write_fifo(&USB0.D0FIFO.WORD, pipe, mps, mps);
if (r) USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BVAL;
USB0.D0FIFOSEL.WORD = 0;
TU_LOG1("< %d %x %x %d\r\n", rem, ctr, *get_pipectr(num), r);
}
} else {
unsigned ctr = select_pipe(num, USB_FIFOSEL_MBW_16);
int r = write_fifo(&USB0.D0FIFO.WORD, pipe, mps, 0);
if (r) USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BVAL;
USB0.D0FIFOSEL.WORD = 0;
TU_LOG1("< %d %x %x %d\r\n", rem, ctr, *get_pipectr(num), r);
}
return;
}
pipe->addr = 0;
pipe->remaining = 0;
USB0.D0FIFOSEL.WORD = 0;
dcd_event_xfer_complete(rhport, pipe->ep, pipe->length,
XFER_RESULT_SUCCESS, true);
TU_LOG1("cE\r\n");
}
#else
static void process_pipe_bemp(uint8_t rhport, unsigned num)
{
pipe_state_t *pipe = &_dcd.pipe[num];
const unsigned rem = pipe->remaining;
if (rem) {
USB0.PIPESEL.WORD = num;
const unsigned mps = USB0.PIPEMAXP.WORD;
unsigned ctr = select_pipe(num, USB_FIFOSEL_MBW_16);
int r = write_fifo2(&USB0.D0FIFO.WORD, pipe, mps);
if (r) USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BVAL;
USB0.D0FIFOSEL.WORD = 0;
TU_LOG1("< %d %x %x %d\r\n", rem, ctr, *get_pipectr(num), r);
return;
}
if (*get_pipectr(num) & USB_PIPECTR_INBUFM) {
TU_LOG1("< SKIP\r\n");
return;
}
pipe->addr = 0;
pipe->remaining = 0;
USB0.D0FIFOSEL.WORD = 0;
dcd_event_xfer_complete(rhport, pipe->ep, pipe->length,
XFER_RESULT_SUCCESS, true);
TU_LOG1("cE\r\n");
}
#endif
static void process_pipe_brdy(uint8_t rhport, unsigned num)
{
const unsigned ctr = select_pipe(num, USB_FIFOSEL_MBW_8);
const unsigned len = ctr & USB_FIFOCTR_DTLN;
const unsigned mps = USB0.PIPEMAXP.WORD;
pipe_state_t *pipe = &_dcd.pipe[num];
// TU_LOG1("> %d %x %x\r\n", num, USB0.D0FIFOSEL.WORD, ctr);
int cplt = read_fifo(&USB0.D0FIFO.WORD, pipe, mps, len);
if (cplt || (len < mps)) {
if (2 != cplt) {
USB0.D0FIFO.WORD = USB_FIFOCTR_BCLR;
if (!tu_edpt_dir(pipe->ep)) {
const unsigned ctr = select_pipe(num, USB_FIFOSEL_MBW_8);
const unsigned len = ctr & USB_FIFOCTR_DTLN;
const unsigned mps = USB0.PIPEMAXP.WORD;
int cplt = read_fifo(&USB0.D0FIFO.WORD, pipe, mps, len);
if (cplt || (len < mps)) {
if (2 != cplt) {
USB0.D0FIFO.WORD = USB_FIFOCTR_BCLR;
}
USB0.D0FIFOSEL.WORD = 0;
dcd_event_xfer_complete(rhport, pipe->ep,
pipe->length - pipe->remaining,
XFER_RESULT_SUCCESS, true);
return;
}
USB0.D0FIFOSEL.WORD = 0;
dcd_event_xfer_complete(rhport, pipe->ep,
pipe->length - pipe->remaining,
XFER_RESULT_SUCCESS, true);
// TU_LOG1("c\r\n");
} else {
select_pipe(num, USB_FIFOSEL_MBW_16);
const unsigned mps = USB0.PIPEMAXP.WORD;
unsigned rem = pipe->remaining;
rem -= TU_MIN(rem, mps);
pipe->remaining = rem;
if (rem) {
int r = 0;
r = write_fifo(&USB0.D0FIFO.WORD, pipe, mps);
if (r) USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BVAL;
USB0.D0FIFOSEL.WORD = 0;
return;
}
USB0.D0FIFOSEL.WORD = 0;
pipe->addr = 0;
pipe->remaining = 0;
dcd_event_xfer_complete(rhport, pipe->ep, pipe->length,
XFER_RESULT_SUCCESS, true);
}
}
@ -571,7 +478,7 @@ static void process_bus_reset(uint8_t rhport)
*ctr = USB_PIPECTR_ACLRM;
*ctr = 0;
++ctr;
*tre = (1u<<8);
*tre = TU_BIT(8);
tre += 2;
}
for (int i = 6; i <= 9; ++i) {
@ -583,7 +490,7 @@ static void process_bus_reset(uint8_t rhport)
}
tu_varclr(&_dcd);
dcd_event_bus_reset(rhport, TUSB_SPEED_FULL, true);
TU_LOG1("R\r\n");
// TU_LOG1("R\r\n");
}
static void process_set_address(uint8_t rhport)
@ -626,7 +533,6 @@ void dcd_init(uint8_t rhport)
USB0.BEMPENB.WORD = 1;
USB0.BRDYENB.WORD = 1;
TU_LOG1("INIT\r\n");
if (USB0.INTSTS0.BIT.VBSTS) {
dcd_connect(rhport);
}
@ -676,8 +582,8 @@ bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * ep_desc)
(void)rhport;
const unsigned ep_addr = ep_desc->bEndpointAddress;
const unsigned epn = ep_addr & 0xFu;
const unsigned dir = (ep_addr & TUSB_DIR_IN_MASK) ? TUSB_DIR_IN : TUSB_DIR_OUT;
const unsigned epn = tu_edpt_number(ep_addr);
const unsigned dir = tu_edpt_dir(ep_addr);
const unsigned xfer = ep_desc->bmAttributes.xfer;
const unsigned mps = ep_desc->wMaxPacketSize.size;
@ -692,6 +598,7 @@ bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * ep_desc)
_dcd.ep[dir][epn] = num;
/* setup pipe */
dcd_int_disable(rhport);
USB0.PIPESEL.WORD = num;
USB0.PIPEMAXP.WORD = mps;
volatile uint16_t *ctr = get_pipectr(num);
@ -705,17 +612,14 @@ bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * ep_desc)
} else {
cfg |= USB_PIPECFG_ISO | USB_PIPECFG_DBLB;
}
USB0.PIPECFG.WORD = cfg;
if (dir) {
USB0.BEMPENB.WORD |= 1u << num;
USB0.PIPECFG.WORD = cfg;
USB0.BRDYSTS.WORD = 0x1FFu ^ TU_BIT(num);
USB0.BRDYENB.WORD |= TU_BIT(num);
if (dir || (xfer != TUSB_XFER_BULK)) {
*ctr = USB_PIPECTR_PID_BUF;
} else {
USB0.BRDYENB.WORD |= 1u << num;
if (xfer != TUSB_XFER_BULK) {
*ctr = USB_PIPECTR_PID_BUF;
}
}
TU_LOG1("O %d %x %x\r\n", USB0.PIPESEL.WORD, USB0.PIPECFG.WORD, USB0.PIPEMAXP.WORD);
// TU_LOG1("O %d %x %x\r\n", USB0.PIPESEL.WORD, USB0.PIPECFG.WORD, USB0.PIPEMAXP.WORD);
dcd_int_enable(rhport);
return true;
}
@ -723,12 +627,11 @@ bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * ep_desc)
void dcd_edpt_close(uint8_t rhport, uint8_t ep_addr)
{
(void)rhport;
const unsigned epn = ep_addr & 0xFu;
const unsigned dir = (ep_addr & TUSB_DIR_IN_MASK) ? TUSB_DIR_IN : TUSB_DIR_OUT;
const unsigned epn = tu_edpt_number(ep_addr);
const unsigned dir = tu_edpt_dir(ep_addr);
const unsigned num = _dcd.ep[dir][epn];
USB0.BEMPENB.WORD &= ~(1u << num);
USB0.BRDYENB.WORD &= ~(1u << num);
USB0.BRDYENB.WORD &= ~TU_BIT(num);
volatile uint16_t *ctr = get_pipectr(num);
*ctr = 0;
USB0.PIPESEL.WORD = num;
@ -740,7 +643,7 @@ void dcd_edpt_close(uint8_t rhport, uint8_t ep_addr)
bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer, uint16_t total_bytes)
{
bool r;
const unsigned epn = ep_addr & 0xFu;
const unsigned epn = tu_edpt_number(ep_addr);
dcd_int_disable(rhport);
if (0 == epn) {
r = process_edpt0_xfer(rhport, ep_addr, buffer, total_bytes);
@ -816,17 +719,10 @@ void dcd_int_handler(uint8_t rhport)
}
}
if (is0 & USB_IS0_BEMP) {
const unsigned m = USB0.BEMPENB.WORD;
unsigned s = USB0.BEMPSTS.WORD & m;
const unsigned s = USB0.BEMPSTS.WORD;
USB0.BEMPSTS.WORD = 0;
if (s & 1) {
process_edpt0_bemp(rhport);
s &= ~1;
}
while (s) {
const unsigned num = __builtin_ctz(s);
process_pipe_bemp(rhport, num);
s &= ~(1<<num);
}
}
if (is0 & USB_IS0_BRDY) {
@ -840,7 +736,7 @@ void dcd_int_handler(uint8_t rhport)
while (s) {
const unsigned num = __builtin_ctz(s);
process_pipe_brdy(rhport, num);
s &= ~(1<<num);
s &= ~TU_BIT(num);
}
}
}