Change of vterm handling logic on backend chardev input event (#40)

[lunaix-os.git] / lunaix-os / includes / hal / term.h

diff --git a/lunaix-os/includes/hal/term.h b/lunaix-os/includes/hal/term.h
index 79f8f67ad1b18fe9831b46bc5667c0551220c0e3..407707e397c6fff6fa446f7fe7eee80b20167abc 100644 (file)
--- a/lunaix-os/includes/hal/term.h
+++ b/lunaix-os/includes/hal/term.h
@@ -2,49 +2,101 @@
 #define __LUNAIX_TERM_H
 
 #include <lunaix/device.h>
+#include <lunaix/ds/rbuffer.h>
+#include <lunaix/ds/waitq.h>
+#include <lunaix/signal_defs.h>
+
+#include <usr/lunaix/term.h>
 
 struct term;
 
-struct term_lcntl
+struct linebuffer
 {
-    struct llist_header lcntls;
-    size_t (*apply)(struct term* termdev, char* line, size_t len);
+    struct rbuffer* next;
+    struct rbuffer* current;
+    short sflags;
+    short sz_hlf;
 };
+#define LEVT_EOL (1)
+#define LEVT_EOF (1 << 1)
+#define LEVT_SIGRAISE (1 << 2)
+
+typedef struct rbuffer** lbuf_ref_t;
+#define ref_current(lbuf) (&(lbuf)->current)
+#define ref_next(lbuf) (&(lbuf)->next)
+#define deref(bref) (*(bref))
+
+/**
+ * @brief Communication port capability that a device is supported natively, 
+ *          or able to emulate low level serial transmission behaviour specify 
+ *          by POSIX1-2008, section 11.
+ * 
+ */
+#define TERMPORT_CAP 0x4d524554U
+
+/**
+ * @brief A termios capability that a device provide interfaces which is 
+ *          compliant to POSIX1-2008
+ * 
+ */
+#define TERMIOS_CAP 0x534f4954U
 
-struct linebuffer
+struct term;
+
+struct termport_cap_ops
 {
-    char* current;
-    char* next;
-    size_t sz_hlf;
-    off_t ptr;
+    void (*set_speed)(struct device*, speed_t);
+    void (*set_clkbase)(struct device*, unsigned int);
+    void (*set_cntrl_mode)(struct device*, tcflag_t);
+};
+
+struct termport_capability
+{
+    CAPABILITY_META;
+    struct termport_cap_ops* cap_ops;
+    struct term* term;
 };
 
 struct term
 {
     struct device* dev;
     struct device* chdev;
-    struct llist_header lcntl_stack;
-    struct linebuffer line;
+    struct linebuffer line_out;
+    struct linebuffer line_in;
+    char* scratch_pad;
     pid_t fggrp;
+
+    struct termport_capability* tp_cap;
+    waitq_t line_in_event;
+
+    /* -- POSIX.1-2008 compliant fields -- */
+    tcflag_t iflags;
+    tcflag_t oflags;
+    tcflag_t lflags;
+    tcflag_t cflags;
+    cc_t cc[_NCCS];
+
+    /* -- END POSIX.1-2008 compliant fields -- */
+    speed_t iospeed;
+    speed_t clkbase;
+    tcflag_t tflags;    // temp flags
 };
 
+extern struct device* sysconsole;
+
 struct term*
-term_create();
+term_create(struct device* chardev, char* suffix);
 
 int
 term_bind(struct term* tdev, struct device* chdev);
 
-int
-term_push_lcntl(struct term* tdev, struct term_lcntl* lcntl);
-
-int
-term_pop_lcntl(struct term* tdev);
-
-struct term_lcntl*
-term_get_lcntl(u32_t lcntl_index);
-
-void
-line_flip(struct linebuffer* lbf);
+static inline void
+line_flip(struct linebuffer* lbf)
+{
+    struct rbuffer* tmp = lbf->current;
+    lbf->current = lbf->next;
+    lbf->next = tmp;
+}
 
 void
 line_alloc(struct linebuffer* lbf, size_t sz_hlf);
@@ -52,23 +104,35 @@ line_alloc(struct linebuffer* lbf, size_t sz_hlf);
 void
 line_free(struct linebuffer* lbf, size_t sz_hlf);
 
-static inline int
-line_put_next(struct linebuffer* lbf, char val, int delta)
-{
-    size_t dptr = (size_t)(lbf->ptr + delta);
-    if (dptr >= lbf->sz_hlf) {
-        return 0;
-    }
-
-    lbf->next[dptr] = val;
-    lbf->ptr++;
-    return 1;
-}
+void
+term_sendsig(struct term* tdev, int signal);
+
+int
+term_flush(struct term* tdev);
 
 int
-term_sendline(struct term* tdev, size_t len);
+term_read(struct term* tdev);
 
 int
-term_readline(struct term* tdev, size_t len);
+lcntl_transform_inseq(struct term* tdev);
+
+int
+lcntl_transform_outseq(struct term* tdev);
+
+static inline void
+term_cap_set_operations(struct termport_capability* cap, 
+                        struct termport_cap_ops* ops)
+{
+    cap->cap_ops = ops;
+}
+
+void
+term_notify_data_avaliable(struct termport_capability* cap);
+
+#define termport_default_ops                                    \
+    ({                                                          \
+        extern struct termport_cap_ops default_termport_cap_ops;\
+        &default_termport_cap_ops;                              \
+    })
 
 #endif /* __LUNAIX_TERM_H */