X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/8b8f49b713d64065775fe538232f8639083601bd..64e5fa9a495e388c922157b9a616204c299f5e05:/lunaix-os/hal/term/term.c

diff --git a/lunaix-os/hal/term/term.c b/lunaix-os/hal/term/term.c
index 2130105..0c404a5 100644
--- a/lunaix-os/hal/term/term.c
+++ b/lunaix-os/hal/term/term.c
@@ -2,22 +2,26 @@
 #include <klibc/string.h>
 #include <lunaix/fs.h>
 #include <lunaix/mm/valloc.h>
+#include <lunaix/process.h>
 #include <lunaix/spike.h>
 #include <lunaix/status.h>
 
 #include <usr/lunaix/ioctl_defs.h>
 
 #define ANSI_LCNTL 0
+#define termdev(dev) ((struct term*)(dev)->underlay)
 
 extern struct term_lcntl ansi_line_controller;
-static struct term_lcntl* line_controls[] = { [ANSI_LCNTL] =
-                                                &ansi_line_controller };
+static struct term_lcntl* line_controls[] = {[ANSI_LCNTL] =
+                                                 &ansi_line_controller};
 #define LCNTL_TABLE_LEN (sizeof(line_controls) / sizeof(struct term_lcntl*))
 
+static struct devclass termdev = DEVCLASS(DEVIF_NON, DEVFN_TTY, DEV_VTERM);
+
 static int
 term_exec_cmd(struct device* dev, u32_t req, va_list args)
 {
-    struct term* term = (struct term*)dev->underlay;
+    struct term* term = termdev(dev);
     int err = 0;
 
     device_lock(dev);
@@ -34,22 +38,7 @@ term_exec_cmd(struct device* dev, u32_t req, va_list args)
         }
         case TIOCGPGRP:
             return term->fggrp;
-        case TIOCPUSH: {
-            u32_t lcntl_idx = va_arg(args, u32_t);
-            struct term_lcntl* lcntl = term_get_lcntl(lcntl_idx);
-
-            if (!lcntl) {
-                err = EINVAL;
-                goto done;
-            }
-
-            term_push_lcntl(term, lcntl);
-            break;
-        }
-        case TIOCPOP:
-            term_pop_lcntl(term);
-            break;
-        case TIOCSCDEV: {
+        case TDEV_TCSETCHDEV: {
             int fd = va_arg(args, int);
             struct v_fd* vfd;
 
@@ -71,7 +60,7 @@ term_exec_cmd(struct device* dev, u32_t req, va_list args)
             term_bind(term, cdev);
             break;
         }
-        case TIOCGCDEV: {
+        case TDEV_TCGETCHDEV: {
             struct dev_info* devinfo = va_arg(args, struct dev_info*);
 
             if (!term->chdev) {
@@ -84,6 +73,30 @@ term_exec_cmd(struct device* dev, u32_t req, va_list args)
             }
             break;
         }
+        case TDEV_TCGETATTR: {
+            struct _termios* tios = va_arg(args, struct _termios*);
+            *tios = (struct _termios){.c_oflag = term->oflags,
+                                      .c_iflag = term->iflags,
+                                      .c_lflag = term->lflags};
+            memcpy(tios->c_cc, term->cc, _NCCS * sizeof(cc_t));
+            tios->c_baud = term->iospeed;
+        } break;
+        case TDEV_TCSETATTR: {
+            struct _termios* tios = va_arg(args, struct _termios*);
+            term->iflags = tios->c_iflag;
+            term->oflags = tios->c_oflag;
+            term->lflags = tios->c_lflag;
+            memcpy(term->cc, tios->c_cc, _NCCS * sizeof(cc_t));
+
+            if (tios->c_baud != term->iospeed) {
+                term->iospeed = tios->c_baud;
+                if (!term->chdev_ops.set_speed) {
+                    goto done;
+                }
+
+                term->chdev_ops.set_speed(term->chdev, tios->c_baud);
+            }
+        } break;
         default:
             err = EINVAL;
             goto done;
@@ -95,218 +108,115 @@ done:
 }
 
 static int
-term_write(struct device* dev, void* buf, size_t offset, size_t len)
+tdev_do_write(struct device* dev, void* buf, size_t offset, size_t len)
 {
-    struct term* term = (struct term*)dev->underlay;
-    size_t sz = MIN(len, term->line.sz_hlf);
-
-    if (!term->chdev) {
-        return ENODEV;
-    }
-
-    device_lock(term->dev);
-
-    memcpy(term->line.current, &((char*)buf)[offset], sz);
-
-    struct term_lcntl *lcntl, *n;
-    llist_for_each(lcntl, n, &term->lcntl_stack, lcntls)
-    {
-        sz = lcntl->apply(term, term->line.current, sz);
-        line_flip(&term->line);
+    struct term* tdev = termdev(dev);
+    lbuf_ref_t current = ref_current(&tdev->line_out);
+    size_t wrsz = 0;
+    while (wrsz < len) {
+        wrsz += rbuffer_puts(
+            deref(current), &((char*)buf)[offset + wrsz], len - wrsz);
+
+        if (rbuffer_full(deref(current))) {
+            term_flush(tdev);
+        }
     }
 
-    int errcode = term_sendline(term, sz);
-
-    device_unlock(term->dev);
-
-    return errcode;
+    return 0;
 }
 
 static int
-term_read(struct device* dev, void* buf, size_t offset, size_t len)
+tdev_do_read(struct device* dev, void* buf, size_t offset, size_t len)
 {
-    struct term* term = (struct term*)dev->underlay;
-    size_t sz = MIN(len, term->line.sz_hlf);
-
-    if (!term->chdev) {
-        return ENODEV;
-    }
-
-    device_lock(term->dev);
-
-    sz = term_readline(term, sz);
-    if (!sz) {
-        device_unlock(term->dev);
-        return 0;
-    }
+    struct term* tdev = termdev(dev);
+    lbuf_ref_t current = ref_current(&tdev->line_in);
+    bool cont = true;
+    size_t rdsz = 0;
+    while (cont && rdsz < len) {
+        if (rbuffer_empty(deref(current))) {
+            tdev->line_in.sflags = 0;
+            cont = term_read(tdev);
+        }
 
-    struct term_lcntl *pos, *n;
-    llist_for_each(pos, n, &term->lcntl_stack, lcntls)
-    {
-        sz = pos->apply(term, term->line.current, sz);
-        line_flip(&term->line);
+        rdsz += rbuffer_gets(
+            deref(current), &((char*)buf)[offset + rdsz], len - rdsz);
     }
 
-    memcpy(&((char*)buf)[offset], term->line.current, sz);
-
-    device_unlock(term->dev);
-
-    return sz;
+    return rdsz;
 }
 
+static cc_t default_cc[_NCCS] = {4, '\n', 0x7f, 3, 1, 24, 22, 0, 0, 1, 1};
+
 struct term*
-term_create()
+term_create(struct device* chardev, char* suffix)
 {
-    struct term* terminal = valloc(sizeof(struct term));
+    struct term* terminal = vzalloc(sizeof(struct term));
 
     if (!terminal) {
         return NULL;
     }
 
     terminal->dev = device_allocseq(NULL, terminal);
+    terminal->chdev = chardev;
 
-    terminal->dev->ops.read = term_read;
-    terminal->dev->ops.write = term_write;
-
-    llist_init_head(&terminal->lcntl_stack);
-    line_alloc(&terminal->line, 1024);
-
-    return terminal;
-}
-
-int
-term_bind(struct term* term, struct device* chdev)
-{
-    device_lock(term->dev);
-
-    term->chdev = chdev;
+    terminal->dev->ops.read = tdev_do_read;
+    terminal->dev->ops.write = tdev_do_write;
 
-    device_unlock(term->dev);
+    // TODO choice of lcntl can be flexible
+    terminal->lcntl = line_controls[ANSI_LCNTL];
 
-    return 0;
-}
+    line_alloc(&terminal->line_in, 1024);
+    line_alloc(&terminal->line_out, 1024);
 
-struct term_lcntl*
-term_get_lcntl(u32_t lcntl_index)
-{
-    if (lcntl_index >= LCNTL_TABLE_LEN) {
-        return NULL;
+    if (chardev) {
+        int cdev_var = DEV_VAR_FROM(chardev->ident.unique);
+        device_register(terminal->dev, &termdev, "tty%s%d", suffix, cdev_var);
+    } else {
+        device_register(terminal->dev, &termdev, "tty%d", termdev.variant++);
     }
 
-    struct term_lcntl* lcntl_template = line_controls[lcntl_index];
-    struct term_lcntl* lcntl_instance = valloc(sizeof(struct term_lcntl));
+    terminal->lflags = _ICANON | _IEXTEN | _ISIG | _ECHO | _ECHOE | _ECHONL;
+    terminal->iflags = _ICRNL | _IGNBRK;
+    terminal->oflags = _ONLCR | _OPOST;
+    memcpy(terminal->cc, default_cc, _NCCS * sizeof(cc_t));
 
-    if (!lcntl_instance) {
-        return NULL;
-    }
-
-    lcntl_instance->apply = lcntl_template->apply;
-
-    return lcntl_instance;
+    return terminal;
 }
 
 int
-term_push_lcntl(struct term* term, struct term_lcntl* lcntl)
+term_bind(struct term* term, struct device* chdev)
 {
     device_lock(term->dev);
 
-    llist_append(&term->lcntl_stack, &lcntl->lcntls);
+    term->chdev = chdev;
 
     device_unlock(term->dev);
 
     return 0;
 }
 
-int
-term_pop_lcntl(struct term* term)
-{
-    if (term->lcntl_stack.prev == &term->lcntl_stack) {
-        return 0;
-    }
-
-    device_lock(term->dev);
-
-    struct term_lcntl* lcntl =
-      list_entry(term->lcntl_stack.prev, struct term_lcntl, lcntls);
-    llist_delete(term->lcntl_stack.prev);
-
-    vfree(lcntl);
-
-    device_unlock(term->dev);
-
-    return 1;
-}
-
-void
-line_flip(struct linebuffer* lbf)
-{
-    char* tmp = lbf->current;
-    lbf->current = lbf->next;
-    lbf->next = tmp;
-}
-
 void
 line_alloc(struct linebuffer* lbf, size_t sz_hlf)
 {
     char* buffer = valloc(sz_hlf * 2);
-    lbf->current = buffer;
-    lbf->next = &buffer[sz_hlf];
+    memset(lbf, 0, sizeof(*lbf));
+    lbf->current = rbuffer_create(buffer, sz_hlf);
+    lbf->next = rbuffer_create(&buffer[sz_hlf], sz_hlf);
     lbf->sz_hlf = sz_hlf;
 }
 
 void
 line_free(struct linebuffer* lbf, size_t sz_hlf)
 {
-    void* ptr = (void*)MIN((ptr_t)lbf->current, (ptr_t)lbf->next);
+    void* ptr =
+        (void*)MIN((ptr_t)lbf->current->buffer, (ptr_t)lbf->next->buffer);
     vfree(ptr);
 }
 
-int
-term_sendline(struct term* tdev, size_t len)
-{
-    struct device* chdev = tdev->chdev;
-
-    device_lock(chdev);
-
-    int code = chdev->ops.write(chdev, tdev->line.current, 0, len);
-
-    device_unlock(chdev);
-
-    return code;
-}
-
-int
-term_readline(struct term* tdev, size_t len)
-{
-    struct device* chdev = tdev->chdev;
-
-    device_lock(chdev);
-
-    int code = chdev->ops.read(chdev, tdev->line.current, 0, len);
-
-    device_unlock(chdev);
-
-    return code;
-}
-
-int
-term_init(struct device_def* devdef)
+void
+term_sendsig(struct term* tdev, int signal)
 {
-    struct term* terminal = term_create();
-    struct device* tdev = device_allocseq(NULL, terminal);
-    tdev->ops.read = term_read;
-    tdev->ops.write = term_write;
-    tdev->ops.exec_cmd = term_exec_cmd;
-
-    devdef->class.variant++;
-    device_register(tdev, &devdef->class, "tty%d", devdef->class.variant);
-
-    return 0;
-}
-
-static struct device_def vterm_def = {
-    .class = DEVCLASS(DEVIF_NON, DEVFN_TTY, DEV_VTERM),
-    .name = "virtual terminal",
-    .init = term_init
-};
-EXPORT_DEVICE(vterm, &vterm_def, load_on_demand);
\ No newline at end of file
+    if ((tdev->lflags & _ISIG)) {
+        proc_setsignal(get_process(tdev->fggrp), signal);
+    }
+}
\ No newline at end of file