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main: more work on fixing stuff

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2019-03-05 11:54:48 +08:00
parent 1c38c58a6f
commit ffd0285613
5 changed files with 105 additions and 1037 deletions
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12
sw/include/usb.h
View File

@ -5,8 +5,20 @@
extern "C" { extern "C" {
#endif #endif
struct usb_device;
struct usb_setup_request;
void usb_isr(void); void usb_isr(void);
void usb_init(void); void usb_init(void);
void usb_connect(void);
void usb_poll(void);
int usb_irq_happened(void);
void usb_setup(struct usb_device *dev, const struct usb_setup_request *setup);
int usb_send(struct usb_device *dev, int epnum, const void *data, int total_count);
int usb_ack(struct usb_device *dev, int epnum);
int usb_err(struct usb_device *dev, int epnum);
int usb_recv(struct usb_device *dev, void *buffer, unsigned int buffer_len);
#ifdef __cplusplus #ifdef __cplusplus
} }

243
sw/src/grainuum-phy.c
View File

@ -1,243 +0,0 @@
/****************************************************************************
* Grainuum Software USB Stack *
* *
* MIT License: *
* Copyright (c) 2016 Sean Cross *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
#include <generated/csr.h>
#include <grainuum.h>
#include <printf.h>
__attribute__((weak)) void grainuumConnectPre(struct GrainuumUSB *usb)
{
(void)usb;
}
__attribute__((weak)) void grainuumConnectPost(struct GrainuumUSB *usb)
{
(void)usb;
}
__attribute__((weak)) void grainuumDisconnectPre(struct GrainuumUSB *usb)
{
(void)usb;
}
__attribute__((weak)) void grainuumDisconnectPost(struct GrainuumUSB *usb)
{
(void)usb;
}
__attribute__((weak)) void grainuumReceivePacket(struct GrainuumUSB *usb)
{
(void)usb;
}
__attribute__((weak)) void grainuumInitPre(struct GrainuumUSB *usb)
{
(void)usb;
}
__attribute__((weak)) void grainuumInitPost(struct GrainuumUSB *usb)
{
(void)usb;
}
/* --- */
void grainuum_receive_packet(struct GrainuumUSB *usb)
{
grainuumReceivePacket(usb);
}
int grainuumCaptureI(struct GrainuumUSB *usb, uint8_t samples[67])
{
#if 0
int ret;
const uint8_t nak_pkt[] = {USB_PID_NAK};
const uint8_t ack_pkt[] = {USB_PID_ACK};
ret = usbPhyReadI(usb, samples);
if (ret <= 0) {
if (ret != -1)
usbPhyWriteI(usb, nak_pkt, sizeof(nak_pkt));
return 0;
}
/* Save the byte counter for later inspection */
samples[11] = ret;
switch (samples[0]) {
case USB_PID_IN:
/* Make sure we have queued data, and that it's for this particular EP */
if ((!usb->queued_size)
|| (((((const uint16_t *)(samples+1))[0] >> 7) & 0xf) != usb->queued_epnum))
{
usbPhyWriteI(usb, nak_pkt, sizeof(nak_pkt));
break;
}
usbPhyWriteI(usb, usb->queued_data, usb->queued_size);
break;
case USB_PID_SETUP:
grainuum_receive_packet(usb);
break;
case USB_PID_OUT:
grainuum_receive_packet(usb);
break;
case USB_PID_ACK:
/* Allow the next byte to be sent */
usb->queued_size = 0;
grainuum_receive_packet(usb);
break;
case USB_PID_DATA0:
case USB_PID_DATA1:
usbPhyWriteI(usb, ack_pkt, sizeof(ack_pkt));
grainuum_receive_packet(usb);
break;
default:
usbPhyWriteI(usb, nak_pkt, sizeof(nak_pkt));
break;
}
return ret;
#endif
uint8_t obufbuf[128];
uint32_t obufbuf_cnt = 0;
while (!usb_ep_0_out_obuf_empty_read())
{
uint32_t obh = usb_ep_0_out_obuf_head_read();
obufbuf[obufbuf_cnt++] = obh;
usb_ep_0_out_obuf_head_write(1);
}
int i;
static int loops;
uint8_t last_tok = usb_ep_0_out_last_tok_read();
printf("i: %d b: %d olt: %02x --", loops, obufbuf_cnt, last_tok); //obe: %d obh: %02x\n", i, obe, obh);
for (i = 0; i < obufbuf_cnt; i++)
{
printf(" %02x", obufbuf[i]);
}
printf("\n");
usb_ep_0_out_ev_pending_write((1 << 1));
// Response
if (!usb_ep_0_in_ibuf_empty_read())
{
printf("USB ibuf still has data\n");
return 0;
}
uint32_t usb_in_pending = usb_ep_0_out_ev_pending_read();
if (usb_in_pending)
{
printf("USB EP0 in pending is: %02x\n", usb_in_pending);
return 0;
}
grainuumProcess(usb, last_tok, obufbuf, obufbuf_cnt);
return 0;
}
int grainuumInitialized(struct GrainuumUSB *usb)
{
if (!usb)
return 0;
return usb->initialized;
}
enum usb_responses {
USB_STALL = 0b11,
USB_ACK = 0b00,
USB_NAK = 0b01,
USB_NONE = 0b10,
};
void grainuumWriteQueue(struct GrainuumUSB *usb, int epnum,
const void *buffer, int size)
{
usb->queued_data = buffer;
usb->queued_epnum = epnum;
usb->queued_size = size;
int i;
const uint8_t *buffer_u8 = buffer;
for (i = 0; i < size; i++)
{
usb_ep_0_in_ibuf_head_write(buffer_u8[i]);
}
// Indicate that we respond with an ACK
usb_ep_0_in_respond_write(USB_ACK);
usb_ep_0_in_ev_pending_write(0xff);
}
void grainuumInit(struct GrainuumUSB *usb,
struct GrainuumConfig *cfg)
{
if (usb->initialized)
return;
printf("Initializing USB to %08x, cfg to 0x%08x 0x%08x\n", usb, cfg, cfg->getDescriptor);
grainuumInitPre(usb);
usb->cfg = cfg;
usb->state.usb = usb;
cfg->usb = usb;
usb->initialized = 1;
grainuumInitPost(usb);
}
void grainuumDisconnect(struct GrainuumUSB *usb)
{
grainuumDisconnectPre(usb);
usb_pullup_out_write(0);
grainuumDisconnectPost(usb);
}
void grainuumConnect(struct GrainuumUSB *usb)
{
grainuumConnectPre(usb);
usb_pullup_out_write(1);
grainuumConnectPost(usb);
}

348
sw/src/grainuum-state.c
View File

@ -1,348 +0,0 @@
/****************************************************************************
* Grainuum Software USB Stack *
* *
* MIT License: *
* Copyright (c) 2016 Sean Cross *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
#include "grainuum.h"
#include <printf.h>
#include <generated/csr.h>
#ifndef NULL
#define NULL ((void *)0)
#endif
void *memcpy(void *dest, const void *src, unsigned int n);
enum usb_state_packet_type {
packet_type_none,
packet_type_setup,
packet_type_setup_in,
packet_type_setup_out,
packet_type_in,
packet_type_out,
};
__attribute__((weak))
void grainuumSendWait(struct GrainuumUSB *usb, int epnum,
const void *data, int size)
{
(void)usb;
(void)epnum;
(void)data;
(void)size;
}
static uint16_t crc16_add(uint16_t crc, uint8_t c, uint16_t poly)
{
uint8_t i;
for (i = 0; i < 8; i++) {
if ((crc ^ c) & 1)
crc = (crc >> 1) ^ poly;
else
crc >>= 1;
c >>= 1;
}
return crc;
}
static uint16_t crc16(const uint8_t *data, uint32_t size,
uint16_t init, uint32_t poly)
{
while (size--)
init = crc16_add(init, *data++, poly);
return init;
}
static void grainuum_state_clear_tx(struct GrainuumState *state, int result)
{
struct GrainuumUSB *usb = state->usb;
/* If a thread is blocking, wake it up with a failure */
if (usb->cfg->sendDataFinished && state->packet_queued)
usb->cfg->sendDataFinished(usb, result);
state->data_out_left = 0;
state->data_out_max = 0;
state->data_out = NULL;
state->packet_queued = 0;
}
static void grainuum_state_process_tx(struct GrainuumState *state)
{
uint16_t crc;
struct GrainuumUSB *usb = state->usb;
/* Don't allow us to re-prepare data */
if (state->packet_queued) {
return;
}
state->packet_queued = 1;
/* If there's no data to send, then don't send any */
if (!state->data_out) {
state->packet_queued = 0;
return;
}
/* If we've sent all of our data, then there's nothing else to send */
if ((state->data_out_left < 0) || (state->data_out_max < 0)) {
grainuum_state_clear_tx(state, 0);
return;
}
/* Pick the correct PID, DATA0 or DATA1 */
// if (state->data_buffer & (1 << state->tok_epnum))
// state->packet.pid = USB_PID_DATA1;
// else
// state->packet.pid = USB_PID_DATA0;
/* If there's no data, prepare a special NULL packet */
if ((state->data_out_left == 0) || (state->data_out_max == 0)) {
/* The special-null thing only happens for EP0 */
if (state->data_out_epnum != 0) {
grainuum_state_clear_tx(state, 0);
return;
}
state->packet.data[0] = 0; /* CRC16 for empty packets is 0 */
state->packet.data[1] = 0;
state->packet.size = 2;
grainuumWriteQueue(usb, state->data_out_epnum,
&state->packet, state->packet.size + 1);
return;
}
/* Keep the packet size to 8 bytes max */
if (state->data_out_left > GRAINUUM_PACKET_SIZE_MAX)
state->packet.size = GRAINUUM_PACKET_SIZE_MAX;
else
state->packet.size = state->data_out_left;
/* Limit the amount of data transferred to data_out_max */
if (state->packet.size > state->data_out_max)
state->packet.size = state->data_out_max;
/* Copy over data bytes */
memcpy(state->packet.data, state->data_out, state->packet.size);
/* Calculate and copy the crc16 */
crc = ~crc16(state->packet.data, state->packet.size, 0xffff, 0xa001);
state->packet.data[state->packet.size++] = crc;
state->packet.data[state->packet.size++] = crc >> 8;
/* Prepare the packet, including the PID at the end */
grainuumWriteQueue(usb, state->data_out_epnum,
&state->packet, state->packet.size + 1);
}
/* Called when a packet is ACKed.
* Updates the outgoing packet buffer.
*/
static void usbStateTransferSuccess(struct GrainuumState *state)
{
/* Reduce the amount of data left.
* If the packet is divisible by 8, this will cause one more call
* to this function with state->data_out_left == 0. This will send
* a NULL packet, which indicates end-of-transfer.
*/
state->data_out_left -= GRAINUUM_PACKET_SIZE_MAX;
state->data_out_max -= GRAINUUM_PACKET_SIZE_MAX;
state->data_out += GRAINUUM_PACKET_SIZE_MAX;
if ((state->data_out_left < 0) || (state->data_out_max < 0)) {
grainuum_state_clear_tx(state, 0);
/* End of a State setup packet */
if (state->packet_type == packet_type_setup_out)
state->packet_type = packet_type_none;
if (state->packet_type == packet_type_setup_in)
state->packet_type = packet_type_none;
if (state->packet_type == packet_type_out)
state->packet_type = packet_type_none;
}
state->packet_queued = 0;
}
/* Send data down the wire, interrupting any existing
* data that may be queued.
*/
static int grainuum_state_send_data(struct GrainuumState *state,
int epnum,
const void *data,
int size,
int max)
{
/* De-queue any data that may already be queued. */
grainuum_state_clear_tx(state, 1);
state->data_out_epnum = epnum;
state->data_out_left = size;
state->data_out_max = max;
state->data_out = data;
grainuum_state_process_tx(state);
return 0;
}
void grainuumDropData(struct GrainuumUSB *usb)
{
usb->state.packet_queued = 0;
usb->state.data_out = 0;
grainuumWriteQueue(usb, 0, NULL, 0);
}
int grainuumDataQueued(struct GrainuumUSB *usb)
{
return (usb->state.data_out || usb->state.packet_queued);
}
int grainuumSendData(struct GrainuumUSB *usb, int epnum,
const void *data, int size)
{
struct GrainuumState *state = &usb->state;
int ret;
if (state->data_out || !state->address || state->packet_queued) {
return -11; /* EAGAIN */
}
ret = grainuum_state_send_data(state, epnum, data, size, size);
if (ret)
return ret;
grainuum_state_process_tx(state);
if (usb->cfg->sendDataStarted)
usb->cfg->sendDataStarted(usb, epnum, data, size);
return 0;
}
static int grainuum_state_process_setup(struct GrainuumState *state, const uint8_t packet[10])
{
const struct usb_setup_packet *setup;
const void *response = (void *)-1;
uint32_t response_len = 0;
struct GrainuumUSB *usb = state->usb;
struct GrainuumConfig *cfg = usb->cfg;
setup = (const struct usb_setup_packet *)packet;
if ((setup->bmRequestType == 0x00) && (setup->bRequest == SET_ADDRESS)) {
state->address = setup->wValue;
}
else if ((setup->bmRequestType == 0x00) && (setup->bRequest == SET_CONFIGURATION)) {
if (cfg->setConfigNum)
cfg->setConfigNum(usb, setup->wValue);
}
else {
printf("Going to get descriptor @ 0x%08x\n", cfg->getDescriptor);
response_len = cfg->getDescriptor(usb, setup, &response);
}
grainuum_state_send_data(state, state->tok_epnum, response, response_len, setup->wLength);
return 0;
}
static void grainuum_state_parse_data(struct GrainuumState *state,
const uint8_t packet[GRAINUUM_PACKET_SIZE_MAX + 2],
uint32_t size)
{
(void)size;
struct GrainuumUSB *usb = state->usb;
switch (state->packet_type) {
case packet_type_setup:
grainuum_state_process_setup(state, packet);
grainuum_state_process_tx(state);
state->packet_type = packet_type_none;
break;
case packet_type_out:
// XXX HACK: An OUT packet gets generated (on Windows at least) when
// terminating a SETUP sequence. This seems odd.
if (state->tok_epnum == 0)
break;
// Copy over the packet, minus the CRC16
memcpy(state->tok_buf + state->tok_pos, packet, size - 2);
state->tok_pos += (size - 2);
if (!usb->cfg->receiveData(usb, state->tok_epnum, size - 2, packet))
state->packet_type = packet_type_none;
break;
case packet_type_in:
case packet_type_none:
default:
break;
}
}
void grainuumProcess(struct GrainuumUSB *usb,
uint8_t pid,
const uint8_t packet[GRAINUUM_PACKET_SIZE_MAX + 3],
uint32_t size)
{
// uint32_t size = packet[GRAINUUM_PACKET_SIZE_MAX + 3];
struct GrainuumState *state = &usb->state;
printf("Processing %d byte packet %x %08x (%02x)\n", size, pid, packet, packet[0]);
switch(pid) {
case VUSB_PID_SETUP:
printf("Setup packet!\n");
state->packet_type = packet_type_setup;
grainuum_state_clear_tx(state, 1);
break;
case USB_PID_OUT:
state->packet_type = packet_type_out;
state->tok_pos = 0;
state->tok_buf = usb->cfg->getReceiveBuffer(usb, state->tok_epnum, NULL);
break;
default:
printf("Unrecognized PID: %02x\n", pid);
break;
}
if (size == 0) {
usb_ep_0_in_respond_write(0);
usb_ep_0_in_ev_pending_write(0xff);
}
//state->data_buffer |= (1 << state->tok_epnum);
grainuum_state_parse_data(state, packet, size);
}

8
sw/src/main.c
View File

@ -67,13 +67,12 @@ int main(int argc, char **argv)
printf("\n\nUSB API: %s\n", usb_hw_api()); printf("\n\nUSB API: %s\n", usb_hw_api());
// printf("Press any key to enable USB...\n"); // printf("Press any key to enable USB...\n");
usb_print_status(); // usb_print_status();
// uart_read(); // uart_read();
printf("Enabling USB\n"); printf("Enabling USB\n");
usb_connect(); usb_connect();
printf("USB enabled, waiting for packet...\n"); printf("USB enabled, waiting for packet...\n");
// usb_wait(); // usb_print_status();
usb_print_status();
int last = 0; int last = 0;
while (1) while (1)
{ {
@ -81,8 +80,7 @@ int main(int argc, char **argv)
last = usb_irq_happened(); last = usb_irq_happened();
printf("USB %d IRQ happened\n", last); printf("USB %d IRQ happened\n", last);
} }
// printf("x"); usb_poll();
usb_print_status();
} }
return 0; return 0;
} }

527
sw/src/usb-epfifo.c
View File

@ -8,101 +8,22 @@
#ifdef CSR_USB_EP_0_OUT_EV_PENDING_ADDR #ifdef CSR_USB_EP_0_OUT_EV_PENDING_ADDR
/* The state machine states of a control pipe */
enum CONTROL_STATE
{
WAIT_SETUP,
IN_DATA,
OUT_DATA,
LAST_IN_DATA,
WAIT_STATUS_IN,
WAIT_STATUS_OUT,
STALLED,
} control_state;
#define NUM_BUFFERS 4 #define NUM_BUFFERS 4
#define BUFFER_SIZE 64 #define BUFFER_SIZE 64
#define EP_INTERVAL_MS 6 #define EP_INTERVAL_MS 6
//static struct GrainuumUSB usb;
//static uint8_t usb_buf[67];
static const uint8_t hid_report_descriptor[] = {
0x06, 0x00, 0xFF, // (GLOBAL) USAGE_PAGE 0xFF00 Vendor-defined
0x09, 0x00, // (LOCAL) USAGE 0xFF000000
0xA1, 0x01, // (MAIN) COLLECTION 0x01 Application (Usage=0xFF000000: Page=Vendor-defined, Usage=, Type=)
0x26, 0xFF, 0x00, // (GLOBAL) LOGICAL_MAXIMUM 0x00FF (255)
0x75, 0x08, // (GLOBAL) REPORT_SIZE 0x08 (8) Number of bits per field
0x95, 0x08, // (GLOBAL) REPORT_COUNT 0x08 (8) Number of fields
0x06, 0xFF, 0xFF, // (GLOBAL) USAGE_PAGE 0xFFFF Vendor-defined
0x09, 0x01, // (LOCAL) USAGE 0xFFFF0001
0x81, 0x02, // (MAIN) INPUT 0x00000002 (8 fields x 8 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
0x09, 0x01, // (LOCAL) USAGE 0xFFFF0001
0x91, 0x02, // (MAIN) OUTPUT 0x00000002 (8 fields x 8 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
0xC0, // (MAIN) END_COLLECTION Application
};
static const struct usb_device_descriptor device_descriptor = {
.bLength = 18, //sizeof(struct usb_device_descriptor),
.bDescriptorType = DT_DEVICE, /* DEVICE */
.bcdUSB = 0x0200, /* USB 2.0 */
.bDeviceClass = 0x00,
.bDeviceSubClass = 0x00,
.bDeviceProtocol = 0x00,
.bMaxPacketSize0 = 0x08, /* 8-byte packets max */
.idVendor = 0x1209,
.idProduct = 0x9317,
.bcdDevice = 0x0114, /* Device release 1.14 */
.iManufacturer = 0x02, /* No manufacturer string */
.iProduct = 0x01, /* Product name in string #2 */
.iSerialNumber = 0x03, /* No serial number */
.bNumConfigurations = 0x01,
};
static const struct usb_configuration_descriptor configuration_descriptor = {
.bLength = 9, //sizeof(struct usb_configuration_descriptor),
.bDescriptorType = DT_CONFIGURATION,
.wTotalLength = (9 + /*9 + 9 + 7 +*/ 9 + 9 + 7 + 7) /*
(sizeof(struct usb_configuration_descriptor)
+ sizeof(struct usb_interface_descriptor)
+ sizeof(struct usb_hid_descriptor)
+ sizeof(struct usb_endpoint_descriptor)*/,
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = 5,
.bmAttributes = 0x80, /* Remote wakeup not supported */
.bMaxPower = 100 / 2, /* 100 mA (in 2-mA units) */
.data = {
/* struct usb_interface_descriptor { */
/* uint8_t bLength; */ 9,
/* uint8_t bDescriptorType; */ DT_INTERFACE,
/* uint8_t bInterfaceNumber; */ 0,
/* uint8_t bAlternateSetting; */ 0,
/* uint8_t bNumEndpoints; */ 2, /* Two extra EPs */
/* uint8_t bInterfaceClass; */ 3, /* HID class */
/* uint8_t bInterfaceSubclass; */ 0, /* Boot Device subclass */
/* uint8_t bInterfaceProtocol; */ 0, /* 1 == keyboard, 2 == mouse */
/* uint8_t iInterface; */ 4, /* String index #4 */
/* }*/
/* struct usb_hid_descriptor { */
/* uint8_t bLength; */ 9,
/* uint8_t bDescriptorType; */ DT_HID,
/* uint16_t bcdHID; */ 0x11, 0x01,
/* uint8_t bCountryCode; */ 0,
/* uint8_t bNumDescriptors; */ 1, /* We have only one REPORT */
/* uint8_t bReportDescriptorType; */ DT_HID_REPORT,
/* uint16_t wReportDescriptorLength; */ sizeof(hid_report_descriptor),
sizeof(hid_report_descriptor) >> 8,
/* } */
/* struct usb_endpoint_descriptor { */
/* uint8_t bLength; */ 7,
/* uint8_t bDescriptorType; */ DT_ENDPOINT,
/* uint8_t bEndpointAddress; */ 0x81, /* EP1 (IN) */
/* uint8_t bmAttributes; */ 3, /* Interrupt */
/* uint16_t wMaxPacketSize; */ 0x08, 0x00,
/* uint8_t bInterval; */ EP_INTERVAL_MS, /* Every 6 ms */
/* } */
/* struct usb_endpoint_descriptor { */
/* uint8_t bLength; */ 7,
/* uint8_t bDescriptorType; */ DT_ENDPOINT,
/* uint8_t bEndpointAddress; */ 0x01, /* EP1 (OUT) */
/* uint8_t bmAttributes; */ 3, /* Interrupt */
/* uint16_t wMaxPacketSize; */ 0x08, 0x00,
/* uint8_t bInterval; */ EP_INTERVAL_MS, /* Every 6 ms */
/* } */
},
};
enum epfifo_response { enum epfifo_response {
EPF_ACK = 0, EPF_ACK = 0,
EPF_NAK = 1, EPF_NAK = 1,
@ -118,7 +39,7 @@ void usb_connect(void) {
// By default, it wants to respond with NAK. // By default, it wants to respond with NAK.
usb_ep_0_out_respond_write(EPF_ACK); usb_ep_0_out_respond_write(EPF_ACK);
usb_ep_0_in_respond_write(EPF_NAK); usb_ep_0_in_respond_write(EPF_ACK);
usb_ep_0_out_ev_pending_write(usb_ep_0_out_ev_enable_read()); usb_ep_0_out_ev_pending_write(usb_ep_0_out_ev_enable_read());
usb_ep_0_in_ev_pending_write(usb_ep_0_in_ev_pending_read()); usb_ep_0_in_ev_pending_write(usb_ep_0_in_ev_pending_read());
@ -134,11 +55,12 @@ void usb_init(void) {
volatile int irq_count = 0; volatile int irq_count = 0;
#define EP0OUT_BUFFERS 64 #define EP0OUT_BUFFERS 4
__attribute__((aligned(4)))
static uint8_t usb_ep0out_buffer[EP0OUT_BUFFERS][128]; static uint8_t usb_ep0out_buffer[EP0OUT_BUFFERS][128];
static uint8_t usb_ep0out_buffer_len[EP0OUT_BUFFERS];
uint8_t usb_ep0out_wr_ptr; uint8_t usb_ep0out_wr_ptr;
uint8_t usb_ep0out_rd_ptr; uint8_t usb_ep0out_rd_ptr;
int descriptor_ptr;
int max_byte_length = 8; int max_byte_length = 8;
static const uint8_t *current_data; static const uint8_t *current_data;
@ -146,7 +68,7 @@ static int current_length;
static int current_offset; static int current_offset;
static int current_to_send; static int current_to_send;
static int maybe_send_more_data(int epnum) { static int queue_more_data(int epnum) {
(void)epnum; (void)epnum;
// Don't allow requeueing // Don't allow requeueing
if (usb_ep_0_in_respond_read() != EPF_NAK) if (usb_ep_0_in_respond_read() != EPF_NAK)
@ -157,22 +79,23 @@ static int maybe_send_more_data(int epnum) {
if (current_to_send > max_byte_length) if (current_to_send > max_byte_length)
current_to_send = max_byte_length; current_to_send = max_byte_length;
for (this_offset = current_offset; this_offset < current_offset + current_to_send; this_offset++) { for (this_offset = current_offset; this_offset < (current_offset + current_to_send); this_offset++) {
usb_ep_0_in_ibuf_head_write(current_data[this_offset]); usb_ep_0_in_ibuf_head_write(current_data[this_offset]);
} }
usb_ep_0_in_respond_write(EPF_ACK); usb_ep_0_in_respond_write(EPF_ACK);
usb_ep_0_out_respond_write(EPF_ACK);
return 0; return 0;
} }
static int send_data(int epnum, const void *data, int total_count) { int usb_send(struct usb_device *dev, int epnum, const void *data, int total_count) {
(void)dev;
// Don't allow requeueing // Don't allow requeueing
if (usb_ep_0_in_respond_read() != EPF_NAK) if (usb_ep_0_in_respond_read() != EPF_NAK)
return -1; return -1;
current_data = (uint8_t *)data; current_data = (uint8_t *)data;
current_length = total_count; current_length = total_count;
current_offset = 0; current_offset = 0;
maybe_send_more_data(epnum); control_state = IN_DATA;
queue_more_data(epnum);
return 0; return 0;
} }
@ -182,56 +105,48 @@ void usb_isr(void) {
uint8_t ep0o_pending = usb_ep_0_out_ev_pending_read(); uint8_t ep0o_pending = usb_ep_0_out_ev_pending_read();
uint8_t ep0i_pending = usb_ep_0_in_ev_pending_read(); uint8_t ep0i_pending = usb_ep_0_in_ev_pending_read();
// We got an OUT or a SETUP packet. Copy it to usb_ep0out_buffer
// and clear the "pending" bit.
if (ep0o_pending) { if (ep0o_pending) {
int byte_count = 0; int byte_count = 0;
uint8_t *obuf = usb_ep0out_buffer[usb_ep0out_wr_ptr]; uint8_t *obuf = usb_ep0out_buffer[usb_ep0out_wr_ptr];
while (1) { while (!usb_ep_0_out_obuf_empty_read()) {
if (usb_ep_0_out_obuf_empty_read()) obuf[byte_count++] = usb_ep_0_out_obuf_head_read();
break;
obuf[++byte_count] = usb_ep_0_out_obuf_head_read();
usb_ep_0_out_obuf_head_write(0); usb_ep_0_out_obuf_head_write(0);
} }
usb_ep_0_out_ev_pending_write(ep0o_pending); usb_ep_0_out_ev_pending_write(ep0o_pending);
if (byte_count) { if (byte_count) {
obuf[0] = byte_count; printf("read %d bytes\n", byte_count);
usb_ep0out_buffer_len[usb_ep0out_wr_ptr] = byte_count;
usb_ep0out_wr_ptr = (usb_ep0out_wr_ptr + 1) & (EP0OUT_BUFFERS-1); usb_ep0out_wr_ptr = (usb_ep0out_wr_ptr + 1) & (EP0OUT_BUFFERS-1);
// usb_ep_0_in_dtb_write(1);
send_data(0, &device_descriptor, sizeof(device_descriptor));
} }
else { else {
printf("read no bytes\n");
usb_ep_0_out_respond_write(EPF_ACK); usb_ep_0_out_respond_write(EPF_ACK);
} }
} }
// We just got an "IN" token. Send data if we have it.
if (ep0i_pending) { if (ep0i_pending) {
/*
uint8_t *descriptor = (uint8_t *)&device_descriptor;
if (descriptor_ptr < 0) {
usb_ep_0_in_respond_write(EPF_NAK);
}
else if (descriptor_ptr >= sizeof(device_descriptor)) {
descriptor_ptr = -1;
usb_ep_0_in_respond_write(EPF_ACK);
}
else {
usb_ep_0_in_respond_write(EPF_NAK);
for (descriptor_ptr; descriptor_ptr < sizeof(device_descriptor); descriptor_ptr++) {
usb_ep_0_in_ibuf_head_write(descriptor[descriptor_ptr]);
}
usb_ep_0_in_respond_write(EPF_ACK);
}
*/
usb_ep_0_in_respond_write(EPF_NAK); usb_ep_0_in_respond_write(EPF_NAK);
current_offset += current_to_send; current_offset += current_to_send;
maybe_send_more_data(0); queue_more_data(0);
usb_ep_0_in_ev_pending_write(ep0i_pending); usb_ep_0_in_ev_pending_write(ep0i_pending);
// Get ready to respond to the empty data byte // Get ready to respond with an empty data byte
if (current_offset >= current_length) {
current_offset = 0;
current_length = 0;
current_data = NULL;
if (control_state == IN_DATA) {
usb_ep_0_out_respond_write(EPF_ACK); usb_ep_0_out_respond_write(EPF_ACK);
} }
}
}
printf(">> %02x %02x <<\n", ep0o_pending, ep0i_pending);
return; return;
} }
@ -244,335 +159,69 @@ int usb_irq_happened(void) {
return irq_count; return irq_count;
} }
int usb_ack(struct usb_device *dev, int epnum) {
usb_ep_0_out_respond_write(EPF_ACK);
usb_ep_0_in_respond_write(EPF_ACK);
}
int usb_err(struct usb_device *dev, int epnum) {
usb_ep_0_out_respond_write(EPF_STALL);
usb_ep_0_in_respond_write(EPF_STALL);
}
int usb_recv(struct usb_device *dev, void *buffer, unsigned int buffer_len) {
return;
}
static const char hex[] = "0123456789abcdef"; static const char hex[] = "0123456789abcdef";
void usb_poll(void) {
// If some data was received, then process it.
if (usb_ep0out_rd_ptr != usb_ep0out_wr_ptr) {
const struct usb_setup_request *request = (const struct usb_setup_request *)(usb_ep0out_buffer[usb_ep0out_rd_ptr]);
usb_setup(NULL, request);
usb_ep0out_buffer_len[usb_ep0out_rd_ptr] = 0;
usb_ep0out_rd_ptr = (usb_ep0out_rd_ptr + 1) & (EP0OUT_BUFFERS-1);
}
// Cancel any pending transfers
if ((control_state == IN_DATA) && usb_ep_0_in_ibuf_empty_read()) {
printf("state is IN_DATA but ibuf is empty?\n");
usb_ack(NULL, 0);
printf("and obuf_empty_read(): %d\n", usb_ep_0_out_obuf_empty_read());
usb_ep_0_out_obuf_head_write(0);
control_state = WAIT_SETUP;
}
if (!usb_ep_0_out_obuf_empty_read()) {
printf("obuf not empty\n");
}
// if (!usb_ep_0_in_ibuf_empty_read()) {
// usb_ep_0_in_ibuf_head_write(0);
// }
// usb_ack(NULL, 0);
}
void usb_print_status(void) { void usb_print_status(void) {
/*
printf("EP0_OUT Status: %02x\n", usb_ep_0_out_ev_status_read());
printf("EP0_OUT Pending: %02x\n", usb_ep_0_out_ev_pending_read());
printf("EP0_OUT Enable: %02x\n", usb_ep_0_out_ev_enable_read());
printf("EP0_OUT Last Tok: %02x\n", usb_ep_0_out_last_tok_read());
printf("EP0_OUT Respond: %02x\n", usb_ep_0_out_respond_read());
printf("EP0_OUT DTB: %02x\n", usb_ep_0_out_dtb_read());
printf("EP0_OUT OBUF Head: %02x\n", usb_ep_0_out_obuf_head_read());
printf("EP0_OUT OBUF Empty: %02x\n", usb_ep_0_out_obuf_empty_read());
printf("EP0_IN Status: %02x\n", usb_ep_0_in_ev_status_read());
printf("EP0_IN Pending: %02x\n", usb_ep_0_in_ev_pending_read());
printf("EP0_IN Enable: %02x\n", usb_ep_0_in_ev_enable_read());
printf("EP0_IN Last Tok: %02x\n", usb_ep_0_in_last_tok_read());
printf("EP0_IN Respond: %02x\n", usb_ep_0_in_respond_read());
printf("EP0_IN DTB: %02x\n", usb_ep_0_in_dtb_read());
printf("EP0_IN IBUF Head: %02x\n", usb_ep_0_in_ibuf_head_read());
printf("EP0_IN IBUF Empty: %02x\n", usb_ep_0_in_ibuf_empty_read());
*/
while (usb_ep0out_rd_ptr != usb_ep0out_wr_ptr) { while (usb_ep0out_rd_ptr != usb_ep0out_wr_ptr) {
// printf("for (this_offset = current_offset; this_offset < this_offset + current_to_send; this_offset++) {\n"); // printf("current_data: 0x%08x\n", current_data);
// printf("for (this_offset = %d; this_offset < %d; %d++) {\n", current_offset, this_offset, this_offset + current_to_send, this_offset); // printf("current_length: %d\n", current_length);
printf("current_data: 0x%08x\n", current_data); // printf("current_offset: %d\n", current_offset);
printf("current_length: %d\n", current_length); // printf("current_to_send: %d\n", current_to_send);
printf("current_offset: %d\n", current_offset);
printf("current_to_send: %d\n", current_to_send);
uint8_t *obuf = usb_ep0out_buffer[usb_ep0out_rd_ptr]; uint8_t *obuf = usb_ep0out_buffer[usb_ep0out_rd_ptr];
uint8_t cnt = obuf[0]; uint8_t cnt = usb_ep0out_buffer_len[usb_ep0out_rd_ptr];
unsigned int i; unsigned int i;
if (cnt) { if (cnt) {
for (i = 0; i < cnt; i++) { for (i = 0; i < cnt; i++) {
uart_write(' '); uart_write(' ');
uart_write(hex[(obuf[i+1] >> 4) & 0xf]); uart_write(hex[(obuf[i+1] >> 4) & 0xf]);
uart_write(hex[obuf[i+1] & (0xf)]); uart_write(hex[obuf[i+1] & (0xf)]);
// printf(" %02x", obufbuf[i]);
} }
uart_write('\r'); uart_write('\r');
uart_write('\n'); uart_write('\n');
} }
// printf("\n"); usb_ep0out_buffer_len[usb_ep0out_rd_ptr] = 0;
usb_ep0out_rd_ptr = (usb_ep0out_rd_ptr + 1) & (EP0OUT_BUFFERS-1); usb_ep0out_rd_ptr = (usb_ep0out_rd_ptr + 1) & (EP0OUT_BUFFERS-1);
} }
} }
// static inline unsigned char usb_pullup_out_read(void);
// static inline void usb_pullup_out_write(unsigned char value);
// static inline unsigned char usb_ep_0_out_ev_status_read(void);
// static inline void usb_ep_0_out_ev_status_write(unsigned char value);
// static inline unsigned char usb_ep_0_out_ev_pending_read(void);
// static inline void usb_ep_0_out_ev_pending_write(unsigned char value);
// static inline unsigned char usb_ep_0_out_ev_enable_read(void);
// static inline void usb_ep_0_out_ev_enable_write(unsigned char value);
// static inline unsigned char usb_ep_0_out_last_tok_read(void);
// static inline unsigned char usb_ep_0_out_respond_read(void);
// static inline void usb_ep_0_out_respond_write(unsigned char value);
// static inline unsigned char usb_ep_0_out_dtb_read(void);
// static inline void usb_ep_0_out_dtb_write(unsigned char value);
// static inline unsigned char usb_ep_0_out_obuf_head_read(void);
// static inline void usb_ep_0_out_obuf_head_write(unsigned char value);
// static inline unsigned char usb_ep_0_out_obuf_empty_read(void);
// static inline unsigned char usb_ep_0_in_ev_status_read(void);
// static inline void usb_ep_0_in_ev_status_write(unsigned char value);
// static inline unsigned char usb_ep_0_in_ev_pending_read(void);
// static inline void usb_ep_0_in_ev_pending_write(unsigned char value);
// static inline unsigned char usb_ep_0_in_ev_enable_read(void);
// static inline void usb_ep_0_in_ev_enable_write(unsigned char value);
// static inline unsigned char usb_ep_0_in_last_tok_read(void);
// static inline unsigned char usb_ep_0_in_respond_read(void);
// static inline void usb_ep_0_in_respond_write(unsigned char value);
// static inline unsigned char usb_ep_0_in_dtb_read(void);
// static inline void usb_ep_0_in_dtb_write(unsigned char value);
// static inline unsigned char usb_ep_0_in_ibuf_head_read(void);
// static inline void usb_ep_0_in_ibuf_head_write(unsigned char value);
// static inline unsigned char usb_ep_0_in_ibuf_empty_read(void);
#if 0
static uint32_t rx_buffer[NUM_BUFFERS][BUFFER_SIZE / sizeof(uint32_t)];
static uint8_t rx_buffer_head;
static uint8_t rx_buffer_tail;
static uint32_t rx_buffer_queries = 0;
static void set_usb_config_num(struct GrainuumUSB *usb, int configNum)
{
(void)usb;
(void)configNum;
;
}
#define USB_STR_BUF_LEN 64
static uint32_t str_buf_storage[USB_STR_BUF_LEN / sizeof(uint32_t)];
static int send_string_descriptor(const char *str, const void **data)
{
int len;
int max_len;
uint8_t *str_buf = (uint8_t *)str_buf_storage;
uint8_t *str_offset = str_buf;
len = strlen(str);
max_len = (USB_STR_BUF_LEN / 2) - 2;
if (len > max_len)
len = max_len;
*str_offset++ = (len * 2) + 2; // Two bytes for length count
*str_offset++ = DT_STRING; // Sending a string descriptor
while (len--)
{
*str_offset++ = *str++;
*str_offset++ = 0;
}
*data = str_buf;
// Return the size, which is stored in the first byte of the output data.
return str_buf[0];
}
static int get_string_descriptor(struct GrainuumUSB *usb,
uint32_t num,
const void **data)
{
static const uint8_t en_us[] = {0x04, DT_STRING, 0x09, 0x04};
(void)usb;
if (num == 0)
{
*data = en_us;
return sizeof(en_us);
}
// Product
if (num == 1)
return send_string_descriptor("Palawan Bootloader", data);
if (num == 2)
return send_string_descriptor("21", data);
if (num == 3)
return send_string_descriptor("1236", data);
if (num == 4)
return send_string_descriptor("12345", data);
if (num == 5)
return send_string_descriptor("54", data);
if (num == 6)
return send_string_descriptor("12345678901234", data);
return 0;
}
static int get_device_descriptor(struct GrainuumUSB *usb,
uint32_t num,
const void **data)
{
(void)usb;
if (num == 0)
{
*data = &device_descriptor;
return sizeof(device_descriptor);
}
return 0;
}
static int get_hid_report_descriptor(struct GrainuumUSB *usb,
uint32_t num,
const void **data)
{
(void)usb;
if (num == 0)
{
*data = &hid_report_descriptor;
return sizeof(hid_report_descriptor);
}
return 0;
}
static int get_configuration_descriptor(struct GrainuumUSB *usb,
uint32_t num,
const void **data)
{
(void)usb;
if (num == 0)
{
*data = &configuration_descriptor;
return configuration_descriptor.wTotalLength;
}
return 0;
}
static int get_descriptor(struct GrainuumUSB *usb,
const void *packet,
const void **response)
{
const struct usb_setup_packet *setup = packet;
printf("In get_Descriptor()\n");
switch (setup->wValueH)
{
case DT_DEVICE:
printf("Returning device descriptor %d\n", setup->wValueL);
return get_device_descriptor(usb, setup->wValueL, response);
case DT_STRING:
printf("Returning string descriptor %d\n", setup->wValueL);
return get_string_descriptor(usb, setup->wValueL, response);
case DT_CONFIGURATION:
printf("Returning configuration descriptor %d\n", setup->wValueL);
return get_configuration_descriptor(usb, setup->wValueL, response);
case DT_HID_REPORT:
printf("Returning HID descriptor %d\n", setup->wValueL);
return get_hid_report_descriptor(usb, setup->wValueL, response);
}
printf("Returning no descriptor %d\n", setup->wValueL);
return 0;
}
static void *get_usb_rx_buffer(struct GrainuumUSB *usb,
uint8_t epNum,
int32_t *size)
{
(void)usb;
(void)epNum;
if (size)
*size = sizeof(rx_buffer[0]);
rx_buffer_queries++;
return rx_buffer[rx_buffer_head];
}
static int received_data(struct GrainuumUSB *usb,
uint8_t epNum,
uint32_t bytes,
const void *data)
{
(void)usb;
(void)epNum;
(void)bytes;
(void)data;
if (epNum == 1)
{
rx_buffer_head = (rx_buffer_head + 1) & (NUM_BUFFERS - 1);
}
/* Return 0, indicating this packet is complete. */
return 0;
}
static int send_data_finished(struct GrainuumUSB *usb, int result)
{
(void)usb;
(void)result;
return 0;
}
static struct GrainuumConfig cfg = {
.getDescriptor = get_descriptor,
.getReceiveBuffer = get_usb_rx_buffer,
.receiveData = received_data,
.sendDataFinished = send_data_finished,
.setConfigNum = set_usb_config_num,
};
// void usb_isr(void) {
// // grainuumCaptureI(&usb, usb_buf);
// return;
// }
// void usb_init(void) {
// // grainuumInit(&usb, &cfg);
// // grainuumConnect(&usb);
// return;
// }
void usbPhyWriteI(const struct GrainuumUSB *usb, const void *buffer, uint32_t size) {
// (void)usb;
// const uint8_t *ubuffer = (const uint8_t *)buffer;
// uint32_t i = 0;
// while (i < size)
// usb_obuf_head_write(ubuffer[i]);
}
int usbPhyReadI(const struct GrainuumUSB *usb, uint8_t *samples) {
(void)usb;
int count = 0;
// while (!usb_ibuf_empty_read()) {
// samples[count++] = usb_ibuf_head_read();
// }
return count;
}
#endif
#endif /* CSR_USB_EP_0_OUT_EV_PENDING_ADDR */ #endif /* CSR_USB_EP_0_OUT_EV_PENDING_ADDR */