rio.c
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/*
* (C) Copyright 2017
* Texas Instruments Incorporated, <www.ti.com>
* Authors: Aurelien Jacquiot <a-jacquiot@ti.com>
* WingMan Kwok <w-kwok2@ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* RapidIO support
*/
#include <common.h>
#include <command.h>
#include <mapmem.h>
#include <asm/io.h>
#include <watchdog.h>
#include <rio.h>
static struct udevice *rio_dev;
static int do_rio_local_write(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 offset, val;
int ret;
offset = simple_strtoul(argv[0], NULL, 16);
val = simple_strtoul(argv[1], NULL, 16);
ret = rio_local_config_write(rio_dev, offset, sizeof(val), val);
if (ret) {
printf("cannot perform local write\n");
return CMD_RET_FAILURE;
}
return CMD_RET_SUCCESS;
}
static int do_rio_local_read(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 offset, val;
int ret;
offset = simple_strtoul(argv[0], NULL, 16);
ret = rio_local_config_read(rio_dev, offset, sizeof(val), &val);
if (ret) {
printf("cannot perform local read\n");
return CMD_RET_FAILURE;
}
/* Display value */
print_buffer(offset, (const void *)&val, sizeof(val), 1, 0);
return CMD_RET_SUCCESS;
}
static int do_rio_write(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
int portid;
u16 destid;
u8 hopcount;
u32 offset;
u32 val;
int ret;
portid = simple_strtol(argv[0], NULL, 10);
destid = simple_strtol(argv[1], NULL, 10) & 0xffff;
hopcount = simple_strtoul(argv[2], NULL, 10) & 0xff;
offset = simple_strtoul(argv[3], NULL, 16);
val = simple_strtoul(argv[4], NULL, 16);
/* Do maintenance write */
ret = rio_config_write(rio_dev, portid, destid, hopcount,
offset, sizeof(val), val);
if (ret) {
printf("cannot perform maintenance write\n");
return CMD_RET_FAILURE;
}
return CMD_RET_SUCCESS;
}
static int do_rio_read(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
int portid;
u16 destid;
u8 hopcount;
u32 offset;
u32 val;
int ret;
portid = simple_strtol(argv[0], NULL, 10);
destid = simple_strtol(argv[1], NULL, 10) & 0xffff;
hopcount = simple_strtoul(argv[2], NULL, 10) & 0xff;
offset = simple_strtoul(argv[3], NULL, 16);
/* Do maintenance read */
ret = rio_config_read(rio_dev, portid, destid, hopcount,
offset, sizeof(val), &val);
if (ret) {
printf("cannot perform maintenance read\n");
return CMD_RET_FAILURE;
}
/* Display value */
print_buffer(offset, (const void *)&val, sizeof(val), 1, 0);
return CMD_RET_SUCCESS;
}
static int do_rio_doorbell_rx(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 info = 0;
int ret;
if (!argc)
return CMD_RET_USAGE;
info = simple_strtoul(argv[0], NULL, 16);
ret = rio_doorbell_rx(rio_dev, info);
if (!ret)
return CMD_RET_SUCCESS;
return CMD_RET_FAILURE;
}
static int do_rio_remove(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
rio_remove(rio_dev);
rio_dev = NULL;
return CMD_RET_SUCCESS;
}
static int do_rio_devices(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
struct udevice *dev;
int i, ret;
puts("RapidIO uclass entries:\n");
printf("devnum device driver\n");
for (i = 0, ret = uclass_first_device(UCLASS_RIO, &dev);
dev;
ret = uclass_next_device(&dev)) {
printf(" %d %s %s\n",
i++, dev->name, dev->driver->name);
}
return cmd_process_error(cmdtp, ret);
}
static cmd_tbl_t rio_commands[] = {
U_BOOT_CMD_MKENT(devices, 0, 1, do_rio_devices, "", ""),
U_BOOT_CMD_MKENT(remove, 1, 0, do_rio_remove, "", ""),
U_BOOT_CMD_MKENT(doorbell_rx, 2, 0, do_rio_doorbell_rx, "", ""),
U_BOOT_CMD_MKENT(r, 5, 1, do_rio_read, "", ""),
U_BOOT_CMD_MKENT(w, 6, 0, do_rio_write, "", ""),
U_BOOT_CMD_MKENT(lr, 2, 1, do_rio_local_read, "", ""),
U_BOOT_CMD_MKENT(lw, 3, 0, do_rio_local_write, "", ""),
};
static int do_rio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
cmd_tbl_t *rio_cmd;
int devnum = 0;
int ret;
if (argc < 2)
return CMD_RET_USAGE;
rio_cmd = find_cmd_tbl(argv[1], rio_commands,
ARRAY_SIZE(rio_commands));
argc -= 2;
argv += 2;
if ((!rio_cmd || argc > rio_cmd->maxargs) ||
((strcmp(rio_cmd->name, "devices")) && (argc < 1)))
return CMD_RET_USAGE;
if (argc) {
devnum = simple_strtoul(argv[0], NULL, 10);
ret = uclass_get_device(UCLASS_RIO, devnum, &rio_dev);
if (ret)
return cmd_process_error(cmdtp, ret);
argc--;
argv++;
} else {
rio_dev = NULL;
if (rio_cmd->cmd != do_rio_devices)
return CMD_RET_USAGE;
}
ret = rio_cmd->cmd(rio_cmd, flag, argc, argv);
return cmd_process_error(rio_cmd, ret);
}
U_BOOT_CMD(rio, CONFIG_SYS_MAXARGS, 0, do_rio,
"RapidIO sub-system",
"devices - show available RapidIO devices\n"
"rio remove <devnum> - remove RapidIO device\n"
"rio doorbell_rx <devnum> [info] - blocking wait for doorbell info\n"
"rio r <devnum> port dst_id hopcount offset - perform config read\n"
"rio w <devnum> port dst_id hopcount offset value - perform config write\n"
"rio lr <devnum> offset - perform local config read\n"
"rio lw <devnum> offset value - perform local config write\n"
);