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made change per reviews, remove dcd_edpt_close(), rename and move thing around

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This commit is contained in:
hathach
2024-11-28 15:56:47 +07:00
parent c514a8c879
commit 7f61a5a43b
2 changed files with 55 additions and 113 deletions
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167
src/portable/raspberrypi/rp2040/dcd_rp2040.c
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@@ -46,11 +46,8 @@
/*------------------------------------------------------------------*/
/* Low level controller
*------------------------------------------------------------------*/
static void hw_endpoint_init(uint8_t ep_addr, uint16_t wMaxPacketSize, uint8_t transfer_type);
static void hw_set_endpoint_control_reg(struct hw_endpoint* ep, uint dpram_offset);
// Init these in dcd_init
static uint8_t* next_buffer_ptr = NULL;
static uint8_t* next_buffer_ptr;
// USB_MAX_ENDPOINTS Endpoints, direction TUSB_DIR_OUT for out and TUSB_DIR_IN for in.
static struct hw_endpoint hw_endpoints[USB_MAX_ENDPOINTS][2];
@@ -70,115 +67,28 @@ TU_ATTR_ALWAYS_INLINE static inline struct hw_endpoint* hw_endpoint_get_by_addr(
// Allocate from the USB buffer space (max 3840 bytes)
static void hw_endpoint_alloc(struct hw_endpoint* ep, size_t size) {
static uint8_t *end;
// determine buffer end
if (end == NULL){
end = &usb_dpram->epx_data[0] + 0xF00;
}
// determine first next_buffer_ptr if necessary
if (next_buffer_ptr == NULL){
next_buffer_ptr = &usb_dpram->epx_data[0];
// round up size to multiple of 64
size = tu_round_up(ep->wMaxPacketSize, 64);
// double buffered Bulk endpoint
if (ep->transfer_type == TUSB_XFER_BULK) {
size *= 2u;
}
// assign buffer
ep->hw_data_buf = next_buffer_ptr;
next_buffer_ptr += size;
hard_assert(next_buffer_ptr < end);
hard_assert(next_buffer_ptr < usb_dpram->epx_data + sizeof(usb_dpram->epx_data));
pico_info(" Allocated %d bytes (0x%p)\r\n", size, ep->hw_data_buf);
}
// allocate endpoint and fill endpoint control registers
static void hw_endpoint_alloc_and_control(struct hw_endpoint* ep, uint8_t transfer_type) {
// size must be multiple of 64
uint size = tu_div_ceil(ep->wMaxPacketSize, 64) * 64u;
// double buffered Bulk endpoint
if (transfer_type == TUSB_XFER_BULK) {
size *= 2u;
}
ep->transfer_type = transfer_type;
hw_endpoint_alloc(ep, size);
uint dpram_offset = hw_data_offset(ep->hw_data_buf);
pico_info(" Allocated %d bytes at offset 0x%x (0x%p)\r\n", size, dpram_offset, ep->hw_data_buf);
hw_set_endpoint_control_reg(ep, dpram_offset);
}
static void hw_set_endpoint_control_reg(struct hw_endpoint* ep, uint dpram_offset) {
// Fill in endpoint control register with buffer offset
uint32_t const reg = EP_CTRL_ENABLE_BITS | ((uint) ep->transfer_type << EP_CTRL_BUFFER_TYPE_LSB) | dpram_offset;
// Enable endpoint
TU_ATTR_ALWAYS_INLINE static inline void hw_endpoint_enable(struct hw_endpoint* ep) {
uint32_t const reg = EP_CTRL_ENABLE_BITS | ((uint) ep->transfer_type << EP_CTRL_BUFFER_TYPE_LSB) | hw_data_offset(ep->hw_data_buf);
*ep->endpoint_control = reg;
}
// New API: Allocate packet buffer used by ISO endpoints
// Some MCU need manual packet buffer allocation, we allocate the largest size to avoid clustering
bool dcd_edpt_iso_alloc(uint8_t rhport, uint8_t ep_addr, uint16_t largest_packet_size) {
(void) rhport;
assert(rhport == 0);
struct hw_endpoint* ep = hw_endpoint_get_by_addr(ep_addr);
// size must be multiple of 64
uint16_t size = (uint16_t)tu_div_ceil(largest_packet_size, 64) * 64u;
ep->wMaxPacketSize = size;
hw_endpoint_alloc(ep, size);
return true;
}
// New API: Configure and enable an ISO endpoint according to descriptor
bool dcd_edpt_iso_activate(uint8_t rhport, tusb_desc_endpoint_t const * ep_desc) {
(void) rhport;
assert(rhport == 0);
const uint8_t ep_addr = ep_desc->bEndpointAddress;
const uint16_t mps = ep_desc->wMaxPacketSize;
uint16_t size = (uint16_t)tu_div_ceil(mps, 64) * 64u;
// init w/o allocate
hw_endpoint_init(ep_addr, size, TUSB_XFER_ISOCHRONOUS);
// Fill in endpoint control register with buffer offset
struct hw_endpoint* ep = hw_endpoint_get_by_addr(ep_addr);
uint dpram_offset = hw_data_offset(ep->hw_data_buf);
hw_set_endpoint_control_reg(ep, dpram_offset);
return true;
}
static void hw_endpoint_close(uint8_t ep_addr) {
struct hw_endpoint* ep = hw_endpoint_get_by_addr(ep_addr);
// Clear hardware registers and then zero the struct
// Clears endpoint enable
*ep->endpoint_control = 0;
// Clears buffer available, etc
*ep->buffer_control = 0;
// Clear any endpoint state
memset(ep, 0, sizeof(struct hw_endpoint));
// Reclaim buffer space if all endpoints are closed
bool reclaim_buffers = true;
for (uint8_t i = 1; i < USB_MAX_ENDPOINTS; i++) {
if (hw_endpoint_get_by_num(i, TUSB_DIR_OUT)->hw_data_buf != NULL ||
hw_endpoint_get_by_num(i, TUSB_DIR_IN)->hw_data_buf != NULL) {
reclaim_buffers = false;
break;
}
}
if (reclaim_buffers) {
next_buffer_ptr = &usb_dpram->epx_data[0];
}
}
// Legacy init called by dcd_init (which does allocation)
static void hw_endpoint_init_and_alloc(uint8_t ep_addr, uint16_t wMaxPacketSize, uint8_t transfer_type) {
struct hw_endpoint* ep = hw_endpoint_get_by_addr(ep_addr);
uint16_t size = (uint16_t) tu_div_ceil(wMaxPacketSize, 64) * 64u;
// size must be multiple of 64
hw_endpoint_init(ep_addr, size, transfer_type);
const uint8_t num = tu_edpt_number(ep_addr);
if (num != 0) {
// alloc a buffer and fill in endpoint control register
hw_endpoint_alloc_and_control(ep, transfer_type);
}
}
// main processing for dcd_edpt_iso_activate
static void hw_endpoint_init(uint8_t ep_addr, uint16_t wMaxPacketSize, uint8_t transfer_type) {
struct hw_endpoint* ep = hw_endpoint_get_by_addr(ep_addr);
@@ -221,6 +131,18 @@ static void hw_endpoint_init(uint8_t ep_addr, uint16_t wMaxPacketSize, uint8_t t
}
}
// Init, allocate buffer and enable endpoint
static void hw_endpoint_open(uint8_t ep_addr, uint16_t wMaxPacketSize, uint8_t transfer_type) {
struct hw_endpoint* ep = hw_endpoint_get_by_addr(ep_addr);
hw_endpoint_init(ep_addr, wMaxPacketSize, transfer_type);
const uint8_t num = tu_edpt_number(ep_addr);
if (num != 0) {
// EP0 is already enabled
hw_endpoint_alloc(ep, ep->wMaxPacketSize);
hw_endpoint_enable(ep);
}
}
static void hw_endpoint_xfer(uint8_t ep_addr, uint8_t* buffer, uint16_t total_bytes) {
struct hw_endpoint* ep = hw_endpoint_get_by_addr(ep_addr);
hw_endpoint_xfer_start(ep, buffer, total_bytes);
@@ -446,8 +368,8 @@ bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
// Init control endpoints
tu_memclr(hw_endpoints[0], 2 * sizeof(hw_endpoint_t));
hw_endpoint_init_and_alloc(0x0, 64, TUSB_XFER_CONTROL);
hw_endpoint_init_and_alloc(0x80, 64, TUSB_XFER_CONTROL);
hw_endpoint_open(0x0, 64, TUSB_XFER_CONTROL);
hw_endpoint_open(0x80, 64, TUSB_XFER_CONTROL);
// Init non-control endpoints
reset_non_control_endpoints();
@@ -552,9 +474,34 @@ void dcd_edpt0_status_complete(uint8_t rhport, tusb_control_request_t const* req
}
}
bool dcd_edpt_open(__unused uint8_t rhport, tusb_desc_endpoint_t const* desc_edpt) {
assert(rhport == 0);
hw_endpoint_init_and_alloc(desc_edpt->bEndpointAddress, tu_edpt_packet_size(desc_edpt), desc_edpt->bmAttributes.xfer);
bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const* desc_edpt) {
(void) rhport;
const uint8_t xfer_type = desc_edpt->bmAttributes.xfer;
TU_VERIFY(xfer_type != TUSB_XFER_ISOCHRONOUS);
hw_endpoint_open(desc_edpt->bEndpointAddress, tu_edpt_packet_size(desc_edpt), xfer_type);
return true;
}
// New API: Allocate packet buffer used by ISO endpoints
// Some MCU need manual packet buffer allocation, we allocate the largest size to avoid clustering
bool dcd_edpt_iso_alloc(uint8_t rhport, uint8_t ep_addr, uint16_t largest_packet_size) {
(void) rhport;
struct hw_endpoint* ep = hw_endpoint_get_by_addr(ep_addr);
hw_endpoint_init(ep_addr, largest_packet_size, TUSB_XFER_ISOCHRONOUS);
hw_endpoint_alloc(ep, largest_packet_size);
return true;
}
// New API: Configure and enable an ISO endpoint according to descriptor
bool dcd_edpt_iso_activate(uint8_t rhport, tusb_desc_endpoint_t const * ep_desc) {
(void) rhport;
const uint8_t ep_addr = ep_desc->bEndpointAddress;
// Fill in endpoint control register with buffer offset
struct hw_endpoint* ep = hw_endpoint_get_by_addr(ep_addr);
TU_ASSERT(ep->hw_data_buf != NULL); // must be inited and buffer allocated
ep->wMaxPacketSize = ep_desc->wMaxPacketSize;
hw_endpoint_enable(ep);
return true;
}
@@ -599,12 +546,6 @@ void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr) {
}
}
void dcd_edpt_close(uint8_t rhport, uint8_t ep_addr) {
(void) rhport;
pico_trace("dcd_edpt_close %02x\r\n", ep_addr);
hw_endpoint_close(ep_addr);
}
void __tusb_irq_path_func(dcd_int_handler)(uint8_t rhport) {
(void) rhport;
dcd_rp2040_irq();