diff --git a/src/jtag/drivers/stlink_usb.c b/src/jtag/drivers/stlink_usb.c index e3c005e4a..98eeb0902 100644 --- a/src/jtag/drivers/stlink_usb.c +++ b/src/jtag/drivers/stlink_usb.c @@ -37,11 +37,13 @@ #define ENDPOINT_IN 0x80 #define ENDPOINT_OUT 0x00 -#define STLINK_RX_EP (1|ENDPOINT_IN) -#define STLINK_TX_EP (2|ENDPOINT_OUT) -#define STLINK_CMD_SIZE (16) -#define STLINK_TX_SIZE (4*128) -#define STLINK_RX_SIZE (4*128) +#define STLINK_NULL_EP 0 +#define STLINK_RX_EP (1|ENDPOINT_IN) +#define STLINK_TX_EP (2|ENDPOINT_OUT) +#define STLINK_SG_SIZE (31) +#define STLINK_DATA_SIZE (4*128) +#define STLINK_CMD_SIZE_V2 (16) +#define STLINK_CMD_SIZE_V1 (10) enum stlink_jtag_api_version { STLINK_JTAG_API_V1 = 0, @@ -67,9 +69,13 @@ struct stlink_usb_handle_s { /** */ struct libusb_transfer *trans; /** */ - uint8_t txbuf[STLINK_TX_SIZE]; + uint8_t cmdbuf[STLINK_SG_SIZE]; /** */ - uint8_t rxbuf[STLINK_RX_SIZE]; + uint8_t cmdidx; + /** */ + uint8_t direction; + /** */ + uint8_t databuf[STLINK_DATA_SIZE]; /** */ enum stlink_transports transport; /** */ @@ -78,8 +84,6 @@ struct stlink_usb_handle_s { uint16_t vid; /** */ uint16_t pid; - /** */ - uint32_t sg_tag; /** this is the currently used jtag api */ enum stlink_jtag_api_version jtag_api; }; @@ -157,41 +161,13 @@ enum stlink_mode { STLINK_MODE_DEBUG_SWIM }; -/** */ -static int stlink_usb_xfer_v1_send_cmd(void *handle, const uint8_t *cmd, int cmdsize, int ep, int size) -{ - uint8_t sg_buffer[31]; - struct stlink_usb_handle_s *h; +#define REQUEST_SENSE 0x03 +#define REQUEST_SENSE_LENGTH 18 - assert(handle != NULL); - assert(cmdsize <= 16); - - h = (struct stlink_usb_handle_s *)handle; - h->sg_tag = (h->sg_tag + 1) & 1; /* seriously? */ - - memset(sg_buffer, 0, sizeof(sg_buffer)); - - h_u32_to_le(sg_buffer, 0x43425355); /* USBC */ - h_u32_to_le(&sg_buffer[4], h->sg_tag); - h_u32_to_le(&sg_buffer[8], size); - - sg_buffer[12] = (ep == STLINK_RX_EP ? ENDPOINT_IN : ENDPOINT_OUT); - /* sg_buffer[13] = 0; */ - sg_buffer[14] = (uint8_t)cmdsize; - - memcpy(&sg_buffer[15], cmd, cmdsize); - - if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)sg_buffer, sizeof(sg_buffer), - 1000) != sizeof(sg_buffer)) { - LOG_DEBUG("send failed\n"); - return ERROR_FAIL; - } - - return ERROR_OK; -} +static void stlink_usb_init_buffer(void *handle, uint8_t direction, uint32_t size); /** */ -static int stlink_usb_xfer_v1_get_status(void *handle, uint8_t *sg_buffer, int len) +static int stlink_usb_xfer_v1_get_status(void *handle) { struct stlink_usb_handle_s *h; @@ -200,134 +176,33 @@ static int stlink_usb_xfer_v1_get_status(void *handle, uint8_t *sg_buffer, int l h = (struct stlink_usb_handle_s *)handle; /* read status */ - memset(sg_buffer, 0, len); + memset(h->cmdbuf, 0, STLINK_SG_SIZE); - if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)sg_buffer, - len, 1000) != len) + if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)h->cmdbuf, + 13, 1000) != 13) return ERROR_FAIL; - uint32_t t1 = le_to_h_u32(sg_buffer+0); - /* uint32_t t2 = le_to_h_u32(sg_buffer+4); */ + uint32_t t1; + + t1 = buf_get_u32(h->cmdbuf, 0, 32); /* check for USBS */ if (t1 != 0x53425355) return ERROR_FAIL; - - return ERROR_OK; -} - -/** */ -static int stlink_usb_xfer_rw(void *handle, int ep, uint8_t *buf, int size) -{ - struct stlink_usb_handle_s *h; - - h = (struct stlink_usb_handle_s *)handle; - - if (!size) - return ERROR_OK; - - if (ep == STLINK_RX_EP) { - if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)buf, - size, 1000) != size) { - return ERROR_FAIL; - } - } else { - if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)buf, - size, 1000) != size) { - return ERROR_FAIL; - } - } - - return ERROR_OK; -} - -/** - * http://en.wikipedia.org/wiki/SCSI_Request_Sense_Command - */ -static int stlink_usb_xfer_v1_get_sense(void *handle) -{ - int err; - - uint8_t cdb[STLINK_CMD_SIZE]; - uint8_t sense[18]; - uint8_t status[13]; - - assert(handle != NULL); - - memset(cdb, 0, sizeof(cdb)); - - cdb[0] = 0x03; - cdb[4] = sizeof(sense); - - err = stlink_usb_xfer_v1_send_cmd(handle, cdb, sizeof(cdb), STLINK_RX_EP, sizeof(sense)); - - if (err != ERROR_OK) - return err; - - err = stlink_usb_xfer_rw(handle, STLINK_RX_EP, sense, sizeof(sense)); - - if (err != ERROR_OK) - return err; - - err = stlink_usb_xfer_v1_get_status(handle, status, sizeof(status)); - - if (err != ERROR_OK) - return err; - - /* check for sense */ - if (status[12] != 0) + /* + * CSW status: + * 0 success + * 1 command failure + * 2 phase error + */ + if (h->cmdbuf[12] != 0) return ERROR_FAIL; - /* if (sense[0] != 0x70 && sense[0] != 0x71) */ - - return err; + return ERROR_OK; } /** */ -static int stlink_usb_xfer_v1_check_status(void *handle) -{ - int err; - uint8_t sg_buffer[13]; - - err = stlink_usb_xfer_v1_get_status(handle, sg_buffer, sizeof(sg_buffer)); - - if (err != ERROR_OK) - return err; - - /* check for sense */ - if (sg_buffer[12] == 1) { - LOG_DEBUG("get sense"); - - err = stlink_usb_xfer_v1_get_sense(handle); - } - - return err; -} - -/** */ -static int stlink_usb_xfer_v1(void *handle, const uint8_t *cmd, int cmdsize, int ep, - uint8_t *buf, int size) -{ - int err; - - assert(handle != NULL); - - err = stlink_usb_xfer_v1_send_cmd(handle, cmd, cmdsize, ep, size); - - if (err != ERROR_OK) - return err; - - err = stlink_usb_xfer_rw(handle, ep, buf, size); - - if (err != ERROR_OK) - return err; - - return stlink_usb_xfer_v1_check_status(handle); -} - -/** */ -static int stlink_usb_xfer_v2(void *handle, const uint8_t *cmd, int cmdsize, int ep, - uint8_t *buf, int size) +static int stlink_usb_xfer_rw(void *handle, int cmdsize, const uint8_t *buf, int size) { struct stlink_usb_handle_s *h; @@ -335,57 +210,125 @@ static int stlink_usb_xfer_v2(void *handle, const uint8_t *cmd, int cmdsize, int h = (struct stlink_usb_handle_s *)handle; - if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)cmd, cmdsize, + if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)h->cmdbuf, cmdsize, 1000) != cmdsize) { return ERROR_FAIL; } - return stlink_usb_xfer_rw(handle, ep, buf, size); + if (h->direction == STLINK_TX_EP && size) { + if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)buf, + size, 1000) != size) { + LOG_DEBUG("bulk write failed"); + return ERROR_FAIL; + } + } else if (h->direction == STLINK_RX_EP && size) { + if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)buf, + size, 1000) != size) { + LOG_DEBUG("bulk read failed"); + return ERROR_FAIL; + } + } + + return ERROR_OK; } /** */ -static int stlink_usb_xfer(void *handle, const uint8_t *cmd, int cmdsize, int ep, - uint8_t *buf, int size) +static int stlink_usb_xfer_v1_get_sense(void *handle) { + int res; struct stlink_usb_handle_s *h; assert(handle != NULL); - assert(cmdsize == STLINK_CMD_SIZE); h = (struct stlink_usb_handle_s *)handle; + stlink_usb_init_buffer(handle, STLINK_RX_EP, 16); + + h->cmdbuf[h->cmdidx++] = REQUEST_SENSE; + h->cmdbuf[h->cmdidx++] = 0; + h->cmdbuf[h->cmdidx++] = 0; + h->cmdbuf[h->cmdidx++] = 0; + h->cmdbuf[h->cmdidx++] = REQUEST_SENSE_LENGTH; + + res = stlink_usb_xfer_rw(handle, REQUEST_SENSE_LENGTH, h->databuf, 16); + + if (res != ERROR_OK) + return res; + + if (stlink_usb_xfer_v1_get_status(handle) != ERROR_OK) + return ERROR_FAIL; + + return ERROR_OK; +} + +/** */ +static int stlink_usb_xfer(void *handle, const uint8_t *buf, int size) +{ + int err, cmdsize = STLINK_CMD_SIZE_V2; + struct stlink_usb_handle_s *h; + + assert(handle != NULL); + + h = (struct stlink_usb_handle_s *)handle; + + if (h->version.stlink == 1) + cmdsize = STLINK_SG_SIZE; + + err = stlink_usb_xfer_rw(handle, cmdsize, buf, size); + + if (err != ERROR_OK) + return err; + if (h->version.stlink == 1) { - return stlink_usb_xfer_v1(handle, cmd, cmdsize, ep, buf, size); - } else { - return stlink_usb_xfer_v2(handle, cmd, cmdsize, ep, buf, size); + if (stlink_usb_xfer_v1_get_status(handle) != ERROR_OK) { + /* check csw status */ + if (h->cmdbuf[12] == 1) { + LOG_DEBUG("get sense"); + if (stlink_usb_xfer_v1_get_sense(handle) != ERROR_OK) + return ERROR_FAIL; + } + return ERROR_FAIL; + } } + + return ERROR_OK; } /** */ -static int stlink_usb_recv(void *handle, const uint8_t *cmd, int cmdsize, uint8_t *rxbuf, - int rxsize) -{ - return stlink_usb_xfer(handle, cmd, cmdsize, STLINK_RX_EP, rxbuf, rxsize); -} - -/** */ -static int stlink_usb_send(void *handle, const uint8_t *cmd, int cmdsize, uint8_t *txbuf, - int txsize) -{ - return stlink_usb_xfer(handle, cmd, cmdsize, STLINK_TX_EP, txbuf, txsize); -} - -/** */ -static void stlink_usb_init_buffer(void *handle) +static void stlink_usb_xfer_v1_create_cmd(void *handle, uint8_t direction, uint32_t size) { struct stlink_usb_handle_s *h; - assert(handle != NULL); + h = (struct stlink_usb_handle_s *)handle; + + /* fill the send buffer */ + strcpy((char *)h->cmdbuf, "USBC"); + h->cmdidx += 4; + /* csw tag not used */ + h->cmdidx += 4; + buf_set_u32(h->cmdbuf+h->cmdidx, 0, 32, size); + h->cmdidx += 4; + h->cmdbuf[h->cmdidx++] = (direction == STLINK_RX_EP ? ENDPOINT_IN : ENDPOINT_OUT); + h->cmdbuf[h->cmdidx++] = 0; /* lun */ + h->cmdbuf[h->cmdidx++] = STLINK_CMD_SIZE_V1; +} + +/** */ +static void stlink_usb_init_buffer(void *handle, uint8_t direction, uint32_t size) +{ + struct stlink_usb_handle_s *h; h = (struct stlink_usb_handle_s *)handle; - memset(h->txbuf, 0, STLINK_TX_SIZE); - memset(h->rxbuf, 0, STLINK_RX_SIZE); + h->direction = direction; + + h->cmdidx = 0; + + memset(h->cmdbuf, 0, STLINK_SG_SIZE); + memset(h->databuf, 0, STLINK_DATA_SIZE); + + if (h->version.stlink == 1) + stlink_usb_xfer_v1_create_cmd(handle, direction, size); } static const char * const stlink_usb_error_msg[] = { @@ -405,9 +348,9 @@ static int stlink_usb_error_check(void *handle) /* TODO: no error checking yet on api V1 */ if (h->jtag_api == STLINK_JTAG_API_V1) - h->rxbuf[0] = STLINK_DEBUG_ERR_OK; + h->databuf[0] = STLINK_DEBUG_ERR_OK; - switch (h->rxbuf[0]) { + switch (h->databuf[0]) { case STLINK_DEBUG_ERR_OK: res = ERROR_OK; break; @@ -419,7 +362,7 @@ static int stlink_usb_error_check(void *handle) } if (res != ERROR_OK) - LOG_DEBUG("status error: %d ('%s')", h->rxbuf[0], err_msg); + LOG_DEBUG("status error: %d ('%s')", h->databuf[0], err_msg); return res; } @@ -435,22 +378,22 @@ static int stlink_usb_version(void *handle) h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 6); - h->txbuf[0] = STLINK_GET_VERSION; + h->cmdbuf[h->cmdidx++] = STLINK_GET_VERSION; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 6); + res = stlink_usb_xfer(handle, h->databuf, 6); if (res != ERROR_OK) return res; - v = (h->rxbuf[0] << 8) | h->rxbuf[1]; + v = (h->databuf[0] << 8) | h->databuf[1]; h->version.stlink = (v >> 12) & 0x0f; h->version.jtag = (v >> 6) & 0x3f; h->version.swim = v & 0x3f; - h->vid = buf_get_u32(h->rxbuf, 16, 16); - h->pid = buf_get_u32(h->rxbuf, 32, 16); + h->vid = buf_get_u32(h->databuf, 16, 16); + h->pid = buf_get_u32(h->databuf, 32, 16); /* set the supported jtag api version * V1 doesn't support API V2 at all @@ -482,16 +425,16 @@ static int stlink_usb_current_mode(void *handle, uint8_t *mode) h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 2); - h->txbuf[0] = STLINK_GET_CURRENT_MODE; + h->cmdbuf[h->cmdidx++] = STLINK_GET_CURRENT_MODE; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); + res = stlink_usb_xfer(handle, h->databuf, 2); if (res != ERROR_OK) return res; - *mode = h->rxbuf[0]; + *mode = h->databuf[0]; return ERROR_OK; } @@ -507,35 +450,6 @@ static int stlink_usb_mode_enter(void *handle, enum stlink_mode type) h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); - - switch (type) { - case STLINK_MODE_DEBUG_JTAG: - h->txbuf[0] = STLINK_DEBUG_COMMAND; - if (h->jtag_api == STLINK_JTAG_API_V1) - h->txbuf[1] = STLINK_DEBUG_APIV1_ENTER; - else - h->txbuf[1] = STLINK_DEBUG_APIV2_ENTER; - h->txbuf[2] = STLINK_DEBUG_ENTER_JTAG; - break; - case STLINK_MODE_DEBUG_SWD: - h->txbuf[0] = STLINK_DEBUG_COMMAND; - if (h->jtag_api == STLINK_JTAG_API_V1) - h->txbuf[1] = STLINK_DEBUG_APIV1_ENTER; - else - h->txbuf[1] = STLINK_DEBUG_APIV2_ENTER; - h->txbuf[2] = STLINK_DEBUG_ENTER_SWD; - break; - case STLINK_MODE_DEBUG_SWIM: - h->txbuf[0] = STLINK_SWIM_COMMAND; - h->txbuf[1] = STLINK_SWIM_ENTER; - break; - case STLINK_MODE_DFU: - case STLINK_MODE_MASS: - default: - return ERROR_FAIL; - } - /* on api V2 we are able the read the latest command * status * TODO: we need the test on api V1 too @@ -543,7 +457,36 @@ static int stlink_usb_mode_enter(void *handle, enum stlink_mode type) if (h->jtag_api == STLINK_JTAG_API_V2) rx_size = 2; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, rx_size); + stlink_usb_init_buffer(handle, STLINK_RX_EP, rx_size); + + switch (type) { + case STLINK_MODE_DEBUG_JTAG: + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + if (h->jtag_api == STLINK_JTAG_API_V1) + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_ENTER; + else + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_ENTER; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_ENTER_JTAG; + break; + case STLINK_MODE_DEBUG_SWD: + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + if (h->jtag_api == STLINK_JTAG_API_V1) + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_ENTER; + else + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_ENTER; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_ENTER_SWD; + break; + case STLINK_MODE_DEBUG_SWIM: + h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_SWIM_ENTER; + break; + case STLINK_MODE_DFU: + case STLINK_MODE_MASS: + default: + return ERROR_FAIL; + } + + res = stlink_usb_xfer(handle, h->databuf, rx_size); if (res != ERROR_OK) return res; @@ -563,28 +506,28 @@ static int stlink_usb_mode_leave(void *handle, enum stlink_mode type) h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_NULL_EP, 0); switch (type) { case STLINK_MODE_DEBUG_JTAG: case STLINK_MODE_DEBUG_SWD: - h->txbuf[0] = STLINK_DEBUG_COMMAND; - h->txbuf[1] = STLINK_DEBUG_EXIT; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_EXIT; break; case STLINK_MODE_DEBUG_SWIM: - h->txbuf[0] = STLINK_SWIM_COMMAND; - h->txbuf[1] = STLINK_SWIM_EXIT; + h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_SWIM_EXIT; break; case STLINK_MODE_DFU: - h->txbuf[0] = STLINK_DFU_COMMAND; - h->txbuf[1] = STLINK_DFU_EXIT; + h->cmdbuf[h->cmdidx++] = STLINK_DFU_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DFU_EXIT; break; case STLINK_MODE_MASS: default: return ERROR_FAIL; } - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0); + res = stlink_usb_xfer(handle, 0, 0); if (res != ERROR_OK) return res; @@ -689,17 +632,17 @@ static int stlink_usb_idcode(void *handle, uint32_t *idcode) h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 4); - h->txbuf[0] = STLINK_DEBUG_COMMAND; - h->txbuf[1] = STLINK_DEBUG_READCOREID; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READCOREID; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 4); + res = stlink_usb_xfer(handle, h->databuf, 4); if (res != ERROR_OK) return res; - *idcode = le_to_h_u32(h->rxbuf); + *idcode = le_to_h_u32(h->databuf); LOG_DEBUG("IDCODE: %08X", *idcode); @@ -719,19 +662,19 @@ static enum target_state stlink_usb_state(void *handle) if (h->jtag_api == STLINK_JTAG_API_V2) return TARGET_UNKNOWN; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 2); - h->txbuf[0] = STLINK_DEBUG_COMMAND; - h->txbuf[1] = STLINK_DEBUG_GETSTATUS; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_GETSTATUS; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); + res = stlink_usb_xfer(handle, h->databuf, 2); if (res != ERROR_OK) return TARGET_UNKNOWN; - if (h->rxbuf[0] == STLINK_CORE_RUNNING) + if (h->databuf[0] == STLINK_CORE_RUNNING) return TARGET_RUNNING; - if (h->rxbuf[0] == STLINK_CORE_HALTED) + if (h->databuf[0] == STLINK_CORE_HALTED) return TARGET_HALTED; return TARGET_UNKNOWN; @@ -747,21 +690,21 @@ static int stlink_usb_reset(void *handle) h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 2); - h->txbuf[0] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; if (h->jtag_api == STLINK_JTAG_API_V1) - h->txbuf[1] = STLINK_DEBUG_APIV1_RESETSYS; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_RESETSYS; else - h->txbuf[1] = STLINK_DEBUG_APIV2_RESETSYS; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_RESETSYS; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); + res = stlink_usb_xfer(handle, h->databuf, 2); if (res != ERROR_OK) return res; - LOG_DEBUG("RESET: %08X", h->rxbuf[0]); + LOG_DEBUG("RESET: %08X", h->databuf[0]); return ERROR_OK; } @@ -779,12 +722,12 @@ static int stlink_usb_run(void *handle) if (h->jtag_api == STLINK_JTAG_API_V2) return ERROR_FAIL; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 2); - h->txbuf[0] = STLINK_DEBUG_COMMAND; - h->txbuf[1] = STLINK_DEBUG_RUNCORE; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_RUNCORE; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); + res = stlink_usb_xfer(handle, h->databuf, 2); if (res != ERROR_OK) return res; @@ -805,12 +748,12 @@ static int stlink_usb_halt(void *handle) if (h->jtag_api == STLINK_JTAG_API_V2) return ERROR_FAIL; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 2); - h->txbuf[0] = STLINK_DEBUG_COMMAND; - h->txbuf[1] = STLINK_DEBUG_FORCEDEBUG; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_FORCEDEBUG; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); + res = stlink_usb_xfer(handle, h->databuf, 2); if (res != ERROR_OK) return res; @@ -831,12 +774,12 @@ static int stlink_usb_step(void *handle) if (h->jtag_api == STLINK_JTAG_API_V2) return ERROR_FAIL; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 2); - h->txbuf[0] = STLINK_DEBUG_COMMAND; - h->txbuf[1] = STLINK_DEBUG_STEPCORE; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_STEPCORE; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); + res = stlink_usb_xfer(handle, h->databuf, 2); if (res != ERROR_OK) return res; @@ -854,15 +797,15 @@ static int stlink_usb_read_regs(void *handle) h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 84); - h->txbuf[0] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; if (h->jtag_api == STLINK_JTAG_API_V1) - h->txbuf[1] = STLINK_DEBUG_APIV1_READALLREGS; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READALLREGS; else - h->txbuf[1] = STLINK_DEBUG_APIV2_READALLREGS; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READALLREGS; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 84); + res = stlink_usb_xfer(handle, h->databuf, 84); if (res != ERROR_OK) return res; @@ -880,21 +823,21 @@ static int stlink_usb_read_reg(void *handle, int num, uint32_t *val) h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 4); - h->txbuf[0] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; if (h->jtag_api == STLINK_JTAG_API_V1) - h->txbuf[1] = STLINK_DEBUG_APIV1_READREG; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READREG; else - h->txbuf[1] = STLINK_DEBUG_APIV2_READREG; - h->txbuf[2] = num; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READREG; + h->cmdbuf[h->cmdidx++] = num; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 4); + res = stlink_usb_xfer(handle, h->databuf, 4); if (res != ERROR_OK) return res; - *val = le_to_h_u32(h->rxbuf); + *val = le_to_h_u32(h->databuf); return ERROR_OK; } @@ -909,17 +852,18 @@ static int stlink_usb_write_reg(void *handle, int num, uint32_t val) h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, 2); - h->txbuf[0] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; if (h->jtag_api == STLINK_JTAG_API_V1) - h->txbuf[1] = STLINK_DEBUG_APIV1_WRITEREG; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_WRITEREG; else - h->txbuf[1] = STLINK_DEBUG_APIV2_WRITEREG; - h->txbuf[2] = num; - h_u32_to_le(h->txbuf + 3, val); + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEREG; + h->cmdbuf[h->cmdidx++] = num; + h_u32_to_le(h->cmdbuf+h->cmdidx, val); + h->cmdidx += 4; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); + res = stlink_usb_xfer(handle, h->databuf, 2); if (res != ERROR_OK) return res; @@ -939,23 +883,25 @@ static int stlink_usb_read_mem8(void *handle, uint32_t addr, uint16_t len, h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_RX_EP, read_len); - h->txbuf[0] = STLINK_DEBUG_COMMAND; - h->txbuf[1] = STLINK_DEBUG_READMEM_8BIT; - h_u32_to_le(h->txbuf + 2, addr); - h_u16_to_le(h->txbuf + 2 + 4, len); + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READMEM_8BIT; + h_u32_to_le(h->cmdbuf+h->cmdidx, addr); + h->cmdidx += 4; + h_u16_to_le(h->cmdbuf+h->cmdidx, len); + h->cmdidx += 2; /* we need to fix read length for single bytes */ if (read_len == 1) read_len++; - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, read_len); + res = stlink_usb_xfer(handle, h->databuf, read_len); if (res != ERROR_OK) return res; - memcpy(buffer, h->rxbuf, len); + memcpy(buffer, h->databuf, len); return ERROR_OK; } @@ -971,14 +917,16 @@ static int stlink_usb_write_mem8(void *handle, uint32_t addr, uint16_t len, h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); + stlink_usb_init_buffer(handle, STLINK_TX_EP, len); - h->txbuf[0] = STLINK_DEBUG_COMMAND; - h->txbuf[1] = STLINK_DEBUG_WRITEMEM_8BIT; - h_u32_to_le(h->txbuf + 2, addr); - h_u16_to_le(h->txbuf + 2 + 4, len); + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_WRITEMEM_8BIT; + h_u32_to_le(h->cmdbuf+h->cmdidx, addr); + h->cmdidx += 4; + h_u16_to_le(h->cmdbuf+h->cmdidx, len); + h->cmdidx += 2; - res = stlink_usb_send(handle, h->txbuf, STLINK_CMD_SIZE, (uint8_t *) buffer, len); + res = stlink_usb_xfer(handle, (uint8_t *) buffer, len); if (res != ERROR_OK) return res; @@ -997,21 +945,23 @@ static int stlink_usb_read_mem32(void *handle, uint32_t addr, uint16_t len, h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); - len *= 4; - h->txbuf[0] = STLINK_DEBUG_COMMAND; - h->txbuf[1] = STLINK_DEBUG_READMEM_32BIT; - h_u32_to_le(h->txbuf + 2, addr); - h_u16_to_le(h->txbuf + 2 + 4, len); + stlink_usb_init_buffer(handle, STLINK_RX_EP, len); - res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, len); + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READMEM_32BIT; + h_u32_to_le(h->cmdbuf+h->cmdidx, addr); + h->cmdidx += 4; + h_u16_to_le(h->cmdbuf+h->cmdidx, len); + h->cmdidx += 2; + + res = stlink_usb_xfer(handle, h->databuf, len); if (res != ERROR_OK) return res; - memcpy(buffer, h->rxbuf, len); + memcpy(buffer, h->databuf, len); return ERROR_OK; } @@ -1027,16 +977,18 @@ static int stlink_usb_write_mem32(void *handle, uint32_t addr, uint16_t len, h = (struct stlink_usb_handle_s *)handle; - stlink_usb_init_buffer(handle); - len *= 4; - h->txbuf[0] = STLINK_DEBUG_COMMAND; - h->txbuf[1] = STLINK_DEBUG_WRITEMEM_32BIT; - h_u32_to_le(h->txbuf + 2, addr); - h_u16_to_le(h->txbuf + 2 + 4, len); + stlink_usb_init_buffer(handle, STLINK_TX_EP, len); - res = stlink_usb_send(handle, h->txbuf, STLINK_CMD_SIZE, (uint8_t *) buffer, len); + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND; + h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_WRITEMEM_32BIT; + h_u32_to_le(h->cmdbuf+h->cmdidx, addr); + h->cmdidx += 4; + h_u16_to_le(h->cmdbuf+h->cmdidx, len); + h->cmdidx += 2; + + res = stlink_usb_xfer(handle, (uint8_t *) buffer, len); if (res != ERROR_OK) return res;