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cleanup

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This commit is contained in:
kkitayam
2021-03-28 12:42:28 +09:00
parent 0e0f9a8da3
commit 4a597c9698
1 changed files with 46 additions and 56 deletions
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102
src/portable/renesas/usba/dcd_usba.c
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@@ -112,12 +112,11 @@ typedef union {
typedef struct TU_ATTR_PACKED
{
uintptr_t addr;
uint16_t length;
uint16_t remaining;
uintptr_t addr; /* the start address of a transfer data buffer */
uint16_t length; /* the number of bytes in the buffer */
uint16_t remaining; /* the number of bytes remaining in the buffer */
struct {
uint32_t ep : 8;
uint32_t data: 1;
uint32_t ep : 8; /* an assigned endpoint address */
uint32_t : 0;
};
} pipe_state_t;
@@ -125,7 +124,7 @@ typedef struct TU_ATTR_PACKED
typedef struct
{
pipe_state_t pipe[9];
uint8_t ep[2][16]; /* index for pipe number */
uint8_t ep[2][16]; /* a lookup table for a pipe index from an endpoint address */
} dcd_data_t;
//--------------------------------------------------------------------+
@@ -231,10 +230,10 @@ static unsigned select_pipe(unsigned num, unsigned attr)
return wait_for_pipe_ready();
}
/* 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)
/* 1 less than mps bytes were written to FIFO
* 2 no bytes were written to FIFO
* 0 mps bytes were written to FIFO */
static int fifo_write(volatile void *fifo, pipe_state_t* pipe, unsigned mps)
{
unsigned rem = pipe->remaining;
if (!rem) return 2;
@@ -261,9 +260,10 @@ static int write_fifo(volatile void *fifo, pipe_state_t* pipe, unsigned mps)
return 0;
}
/* 1 if the number of bytes read is less than mps bytes
* 0 otherwise */
static int read_fifo(volatile void *fifo, pipe_state_t* pipe, unsigned mps, size_t len)
/* 1 less than mps bytes were read from FIFO
* 2 the end of the buffer reached.
* 0 mps bytes were read from FIFO */
static int fifo_read(volatile void *fifo, pipe_state_t* pipe, unsigned mps, size_t len)
{
unsigned rem = pipe->remaining;
if (!rem) return 2;
@@ -294,7 +294,6 @@ static void process_setup_packet(uint8_t rhport)
setup_packet[3] = USB0.USBLENG;
USB0.INTSTS0.WORD = ~USB_IS0_VALID;
dcd_event_setup_received(rhport, (const uint8_t*)&setup_packet[0], true);
// TU_LOG1("S\r\n");
}
static void process_status_completion(uint8_t rhport)
@@ -309,7 +308,6 @@ static void process_status_completion(uint8_t rhport)
ep_addr = tu_edpt_addr(0, TUSB_DIR_OUT);
}
dcd_event_xfer_complete(rhport, ep_addr, 0, XFER_RESULT_SUCCESS, true);
// TU_LOG1("C\r\n");
}
static bool process_edpt0_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer, uint16_t total_bytes)
@@ -317,11 +315,11 @@ static bool process_edpt0_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer,
(void)rhport;
pipe_state_t *pipe = &_dcd.pipe[0];
/* set fifo direction */
if (ep_addr) { /* IN */
/* configure fifo direction and access unit settings */
if (ep_addr) { /* IN, 2 bytes */
USB0.CFIFOSEL.WORD = USB_FIFOSEL_TX | USB_FIFOSEL_MBW_16;
while (!(USB0.CFIFOSEL.WORD & USB_FIFOSEL_TX)) ;
} else { /* OUT */
} else { /* OUT, a byte */
USB0.CFIFOSEL.WORD = USB_FIFOSEL_MBW_8;
while (USB0.CFIFOSEL.WORD & USB_FIFOSEL_TX) ;
}
@@ -329,21 +327,18 @@ static bool process_edpt0_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer,
pipe->addr = (uintptr_t)buffer;
pipe->length = total_bytes;
pipe->remaining = total_bytes;
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)) {
if (fifo_write(&USB0.CFIFO.WORD, pipe, 64)) {
USB0.CFIFOCTR.WORD = USB_FIFOCTR_BVAL;
}
}
USB0.DCPCTR.WORD = USB_PIPECTR_PID_BUF;
// TU_LOG1("X %x %d\r\n", ep_addr, total_bytes);
} else {
/* ZLP */
pipe->addr = 0;
pipe->length = 0;
pipe->remaining = 0;
pipe->data = USB0.DCPCTR.BIT.SQMON;
USB0.DCPCTR.WORD = USB_PIPECTR_CCPL | USB_PIPECTR_PID_BUF;
}
return true;
@@ -352,18 +347,10 @@ static bool process_edpt0_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer,
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) {
/* retry transfer */
int r = write_fifo(&USB0.CFIFO.WORD, &_dcd.pipe[0], 64);
if (r) USB0.CFIFOCTR.WORD = USB_FIFOCTR_BVAL;
return;
}
const unsigned rem = pipe->remaining;
if (rem > 64) {
pipe->remaining = rem - 64;
pipe->data = data ^ 1;
int r = write_fifo(&USB0.CFIFO.WORD, &_dcd.pipe[0], 64);
int r = fifo_write(&USB0.CFIFO.WORD, &_dcd.pipe[0], 64);
if (r) USB0.CFIFOCTR.WORD = USB_FIFOCTR_BVAL;
return;
}
@@ -376,7 +363,7 @@ static void process_edpt0_bemp(uint8_t rhport)
static void process_edpt0_brdy(uint8_t rhport)
{
size_t len = USB0.CFIFOCTR.BIT.DTLN;
int cplt = read_fifo(&USB0.CFIFO.WORD, &_dcd.pipe[0], 64, len);
int cplt = fifo_read(&USB0.CFIFO.WORD, &_dcd.pipe[0], 64, len);
if (cplt || (len < 64)) {
if (2 != cplt) {
USB0.CFIFOCTR.WORD = USB_FIFOCTR_BCLR;
@@ -407,7 +394,7 @@ 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)) ;
int r = write_fifo(&USB0.D0FIFO.WORD, pipe, mps);
int r = fifo_write(&USB0.D0FIFO.WORD, pipe, mps);
if (r) USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BVAL;
USB0.D0FIFOSEL.WORD = 0;
} else {
@@ -428,11 +415,29 @@ static bool process_pipe_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer,
static void process_pipe_brdy(uint8_t rhport, unsigned num)
{
pipe_state_t *pipe = &_dcd.pipe[num];
if (!tu_edpt_dir(pipe->ep)) {
if (tu_edpt_dir(pipe->ep)) { /* IN */
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 = fifo_write(&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);
} else {
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);
int cplt = fifo_read(&USB0.D0FIFO.WORD, pipe, mps, len);
if (cplt || (len < mps)) {
if (2 != cplt) {
USB0.D0FIFO.WORD = USB_FIFOCTR_BCLR;
@@ -444,24 +449,6 @@ static void process_pipe_brdy(uint8_t rhport, unsigned num)
return;
}
USB0.D0FIFOSEL.WORD = 0;
} 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);
}
}
@@ -492,7 +479,6 @@ 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");
}
static void process_set_address(uint8_t rhport)
@@ -674,10 +660,14 @@ void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr)
dcd_int_disable(rhport);
*ctr = USB_PIPECTR_SQCLR;
if (ep_addr & TUSB_DIR_IN_MASK) {
if (tu_edpt_dir(ep_addr)) { /* IN */
*ctr = USB_PIPECTR_PID_BUF;
} else {
/* TODO */
const unsigned num = _dcd.ep[0][tu_edpt_number(ep_addr)];
USB0.PIPESEL.WORD = num;
if (USB0.PIPECFG.BIT.TYPE != 1) {
*ctr = USB_PIPECTR_PID_BUF;
}
}
dcd_int_enable(rhport);
}