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/* SPDX-License-Identifier: Apache-2.0
* Copyright (c) 2022 Cisco Systems, Inc.
*/
#include <vlib/vlib.h>
#include <vlib/log.h>
#include <vlib/dma/dma.h>
VLIB_REGISTER_LOG_CLASS (dma_log) = {
.class_name = "dma",
};
vlib_dma_main_t vlib_dma_main = {};
clib_error_t *
vlib_dma_register_backend (vlib_main_t *vm, vlib_dma_backend_t *b)
{
vlib_dma_main_t *dm = &vlib_dma_main;
vec_add1 (dm->backends, *b);
dma_log_info ("backend '%s' registered", b->name);
return 0;
}
int
vlib_dma_config_add (vlib_main_t *vm, vlib_dma_config_t *c)
{
vlib_dma_main_t *dm = &vlib_dma_main;
vlib_dma_backend_t *b;
vlib_dma_config_data_t *cd;
pool_get_zero (dm->configs, cd);
cd->config_index = cd - dm->configs;
clib_memcpy (&cd->cfg, c, sizeof (vlib_dma_config_t));
vec_foreach (b, dm->backends)
{
dma_log_info ("calling '%s' config_add_fn", b->name);
if (b->config_add_fn (vm, cd))
{
dma_log_info ("config %u added into backend %s", cd - dm->configs,
b->name);
cd->backend_index = b - dm->backends;
return cd - dm->configs;
}
}
pool_put (dm->configs, cd);
return -1;
}
void
vlib_dma_config_del (vlib_main_t *vm, u32 config_index)
{
vlib_dma_main_t *dm = &vlib_dma_main;
vlib_dma_config_data_t *cd = pool_elt_at_index (dm->configs, config_index);
vlib_dma_backend_t *b = vec_elt_at_index (dm->backends, cd->backend_index);
if (b->config_del_fn)
b->config_del_fn (vm, cd);
pool_put (dm->configs, cd);
dma_log_info ("config %u deleted from backend %s", config_index, b->name);
}
u8 *
vlib_dma_config_info (u8 *s, va_list *args)
{
vlib_dma_main_t *dm = &vlib_dma_main;
int config_index = va_arg (*args, int);
u32 len = pool_elts (dm->configs);
if (config_index >= len)
return format (s, "%s", "not found");
vlib_dma_config_data_t *cd = pool_elt_at_index (dm->configs, config_index);
vlib_dma_backend_t *b = vec_elt_at_index (dm->backends, cd->backend_index);
if (b->info_fn)
return b->info_fn (s, args);
return 0;
}
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