c631ec5ef5
First attempt at a UART driver. I'm not sure it's the most stable. Now that userspace is handling displaying logs, also removed serial and log output support from the kernel.
68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
#include <j6/errors.h>
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#include <j6/types.h>
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#include "logger.h"
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#include "objects/endpoint.h"
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#include "syscalls/helpers.h"
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namespace syscalls {
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j6_status_t
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endpoint_create(j6_handle_t *handle)
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{
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construct_handle<endpoint>(handle);
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return j6_status_ok;
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}
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j6_status_t
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endpoint_send(j6_handle_t handle, uint64_t tag, const void * data, size_t data_len)
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{
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if (tag & j6_tag_system_flag)
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return j6_err_invalid_arg;
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endpoint *e = get_handle<endpoint>(handle);
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if (!e) return j6_err_invalid_arg;
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return e->send(tag, data, data_len);
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}
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j6_status_t
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endpoint_receive(j6_handle_t handle, uint64_t * tag, void * data, size_t * data_len, uint64_t timeout)
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{
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if (!tag || !data_len || (*data_len && !data))
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return j6_err_invalid_arg;
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endpoint *e = get_handle<endpoint>(handle);
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if (!e) return j6_err_invalid_arg;
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j6_tag_t out_tag = j6_tag_invalid;
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size_t out_len = *data_len;
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j6_status_t s = e->receive(&out_tag, data, &out_len, timeout);
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*tag = out_tag;
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*data_len = out_len;
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return s;
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}
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j6_status_t
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endpoint_sendrecv(j6_handle_t handle, uint64_t * tag, void * data, size_t * data_len, uint64_t timeout)
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{
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if (!tag || (*tag & j6_tag_system_flag))
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return j6_err_invalid_arg;
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endpoint *e = get_handle<endpoint>(handle);
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if (!e) return j6_err_invalid_arg;
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j6_status_t status = e->send(*tag, data, *data_len);
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if (status != j6_status_ok)
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return status;
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j6_tag_t out_tag = j6_tag_invalid;
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size_t out_len = *data_len;
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j6_status_t s = e->receive(&out_tag, data, &out_len, timeout);
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*tag = out_tag;
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*data_len = out_len;
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return s;
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}
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} // namespace syscalls
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