#include "config.h"
#endif
+#include <helper/time_support.h>
#include <jtag/interface.h>
#include "bitbang.h"
/*
* Helper func to determine if gpio number valid
*
- * Assume here that there will be less than 1000 gpios on a system
+ * Assume here that there will be less than 10000 gpios on a system
*/
-static int is_gpio_valid(int gpio)
+static bool is_gpio_valid(int gpio)
{
- return gpio >= 0 && gpio < 1000;
+ return gpio >= 0 && gpio < 10000;
}
/*
*/
static void unexport_sysfs_gpio(int gpio)
{
- char gpiostr[4];
+ char gpiostr[5];
if (!is_gpio_valid(gpio))
return;
*/
static int setup_sysfs_gpio(int gpio, int is_output, int init_high)
{
+ struct timeval timeout, now;
char buf[40];
- char gpiostr[4];
+ char gpiostr[5];
int ret;
if (!is_gpio_valid(gpio))
}
}
+ gettimeofday(&timeout, NULL);
+ timeval_add_time(&timeout, 0, 500000);
+
snprintf(buf, sizeof(buf), "/sys/class/gpio/gpio%d/direction", gpio);
- ret = open_write_close(buf, is_output ? (init_high ? "high" : "low") : "in");
+ for (;;) {
+ ret = open_write_close(buf, is_output ? (init_high ? "high" : "low") : "in");
+ if (ret >= 0 || errno != EACCES)
+ break;
+ gettimeofday(&now, NULL);
+ if (timeval_compare(&now, &timeout) >= 0)
+ break;
+ jtag_sleep(10000);
+ }
if (ret < 0) {
LOG_ERROR("Couldn't set direction for gpio %d", gpio);
perror("sysfsgpio: ");
}
snprintf(buf, sizeof(buf), "/sys/class/gpio/gpio%d/value", gpio);
- ret = open(buf, O_RDWR | O_NONBLOCK | O_SYNC);
+ for (;;) {
+ ret = open(buf, O_RDWR | O_NONBLOCK | O_SYNC);
+ if (ret >= 0 || errno != EACCES)
+ break;
+ gettimeofday(&now, NULL);
+ if (timeval_compare(&now, &timeout) >= 0)
+ break;
+ jtag_sleep(10000);
+ }
if (ret < 0) {
LOG_ERROR("Couldn't open value for gpio %d", gpio);
perror("sysfsgpio: ");
return ERROR_COMMAND_SYNTAX_ERROR;
}
- command_print(CMD_CTX,
+ command_print(CMD,
"SysfsGPIO nums: tck = %d, tms = %d, tdi = %d, tdo = %d",
tck_gpio, tms_gpio, tdi_gpio, tdo_gpio);
if (CMD_ARGC == 1)
COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], tck_gpio);
- command_print(CMD_CTX, "SysfsGPIO num: tck = %d", tck_gpio);
+ command_print(CMD, "SysfsGPIO num: tck = %d", tck_gpio);
return ERROR_OK;
}
if (CMD_ARGC == 1)
COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], tms_gpio);
- command_print(CMD_CTX, "SysfsGPIO num: tms = %d", tms_gpio);
+ command_print(CMD, "SysfsGPIO num: tms = %d", tms_gpio);
return ERROR_OK;
}
if (CMD_ARGC == 1)
COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], tdo_gpio);
- command_print(CMD_CTX, "SysfsGPIO num: tdo = %d", tdo_gpio);
+ command_print(CMD, "SysfsGPIO num: tdo = %d", tdo_gpio);
return ERROR_OK;
}
if (CMD_ARGC == 1)
COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], tdi_gpio);
- command_print(CMD_CTX, "SysfsGPIO num: tdi = %d", tdi_gpio);
+ command_print(CMD, "SysfsGPIO num: tdi = %d", tdi_gpio);
return ERROR_OK;
}
if (CMD_ARGC == 1)
COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], srst_gpio);
- command_print(CMD_CTX, "SysfsGPIO num: srst = %d", srst_gpio);
+ command_print(CMD, "SysfsGPIO num: srst = %d", srst_gpio);
return ERROR_OK;
}
if (CMD_ARGC == 1)
COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], trst_gpio);
- command_print(CMD_CTX, "SysfsGPIO num: trst = %d", trst_gpio);
+ command_print(CMD, "SysfsGPIO num: trst = %d", trst_gpio);
return ERROR_OK;
}
return ERROR_COMMAND_SYNTAX_ERROR;
}
- command_print(CMD_CTX,
+ command_print(CMD,
"SysfsGPIO nums: swclk = %d, swdio = %d",
swclk_gpio, swdio_gpio);
if (CMD_ARGC == 1)
COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], swclk_gpio);
- command_print(CMD_CTX, "SysfsGPIO num: swclk = %d", swclk_gpio);
+ command_print(CMD, "SysfsGPIO num: swclk = %d", swclk_gpio);
return ERROR_OK;
}
if (CMD_ARGC == 1)
COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], swdio_gpio);
- command_print(CMD_CTX, "SysfsGPIO num: swdio = %d", swdio_gpio);
+ command_print(CMD, "SysfsGPIO num: swdio = %d", swdio_gpio);
return ERROR_OK;
}
.handler = &sysfsgpio_handle_jtag_gpionums,
.mode = COMMAND_CONFIG,
.help = "gpio numbers for tck, tms, tdi, tdo. (in that order)",
- .usage = "(tck tms tdi tdo)* ",
+ .usage = "[tck tms tdi tdo]",
},
{
.name = "sysfsgpio_tck_num",
.handler = &sysfsgpio_handle_jtag_gpionum_tck,
.mode = COMMAND_CONFIG,
.help = "gpio number for tck.",
+ .usage = "[tck]",
},
{
.name = "sysfsgpio_tms_num",
.handler = &sysfsgpio_handle_jtag_gpionum_tms,
.mode = COMMAND_CONFIG,
.help = "gpio number for tms.",
+ .usage = "[tms]",
},
{
.name = "sysfsgpio_tdo_num",
.handler = &sysfsgpio_handle_jtag_gpionum_tdo,
.mode = COMMAND_CONFIG,
.help = "gpio number for tdo.",
+ .usage = "[tdo]",
},
{
.name = "sysfsgpio_tdi_num",
.handler = &sysfsgpio_handle_jtag_gpionum_tdi,
.mode = COMMAND_CONFIG,
.help = "gpio number for tdi.",
+ .usage = "[tdi]",
},
{
.name = "sysfsgpio_srst_num",
.handler = &sysfsgpio_handle_jtag_gpionum_srst,
.mode = COMMAND_CONFIG,
.help = "gpio number for srst.",
+ .usage = "[srst]",
},
{
.name = "sysfsgpio_trst_num",
.handler = &sysfsgpio_handle_jtag_gpionum_trst,
.mode = COMMAND_CONFIG,
.help = "gpio number for trst.",
+ .usage = "[trst]",
},
{
.name = "sysfsgpio_swd_nums",
.handler = &sysfsgpio_handle_swd_gpionums,
.mode = COMMAND_CONFIG,
.help = "gpio numbers for swclk, swdio. (in that order)",
- .usage = "(swclk swdio)* ",
+ .usage = "[swclk swdio]",
},
{
.name = "sysfsgpio_swclk_num",
.handler = &sysfsgpio_handle_swd_gpionum_swclk,
.mode = COMMAND_CONFIG,
.help = "gpio number for swclk.",
+ .usage = "[swclk]",
},
{
.name = "sysfsgpio_swdio_num",
.handler = &sysfsgpio_handle_swd_gpionum_swdio,
.mode = COMMAND_CONFIG,
.help = "gpio number for swdio.",
+ .usage = "[swdio]",
},
COMMAND_REGISTRATION_DONE
};
static const char * const sysfsgpio_transports[] = { "jtag", "swd", NULL };
-struct jtag_interface sysfsgpio_interface = {
- .name = "sysfsgpio",
+static struct jtag_interface sysfsgpio_interface = {
.supported = DEBUG_CAP_TMS_SEQ,
.execute_queue = bitbang_execute_queue,
+};
+
+struct adapter_driver sysfsgpio_adapter_driver = {
+ .name = "sysfsgpio",
.transports = sysfsgpio_transports,
- .swd = &bitbang_swd,
.commands = sysfsgpio_command_handlers,
+
.init = sysfsgpio_init,
.quit = sysfsgpio_quit,
+ .reset = sysfsgpio_reset,
+
+ .jtag_ops = &sysfsgpio_interface,
+ .swd_ops = &bitbang_swd,
};
static struct bitbang_interface sysfsgpio_bitbang = {
.read = sysfsgpio_read,
.write = sysfsgpio_write,
- .reset = sysfsgpio_reset,
.swdio_read = sysfsgpio_swdio_read,
.swdio_drive = sysfsgpio_swdio_drive,
.blink = 0
cleanup_fd(tdo_fd, tdo_gpio);
cleanup_fd(trst_fd, trst_gpio);
cleanup_fd(srst_fd, srst_gpio);
+ cleanup_fd(swclk_fd, swclk_gpio);
+ cleanup_fd(swdio_fd, swdio_gpio);
}
static bool sysfsgpio_jtag_mode_possible(void)
{
if (!is_gpio_valid(tck_gpio))
- return 0;
+ return false;
if (!is_gpio_valid(tms_gpio))
- return 0;
+ return false;
if (!is_gpio_valid(tdi_gpio))
- return 0;
+ return false;
if (!is_gpio_valid(tdo_gpio))
- return 0;
- return 1;
+ return false;
+ return true;
}
static bool sysfsgpio_swd_mode_possible(void)
{
if (!is_gpio_valid(swclk_gpio))
- return 0;
+ return false;
if (!is_gpio_valid(swdio_gpio))
- return 0;
- return 1;
+ return false;
+ return true;
}
static int sysfsgpio_init(void)
cleanup_all_fds();
return ERROR_OK;
}
-