Annotation of funnyos/dev/fcons/fcons.c, Revision 1.5
1.1 init 1: /*
1.5 ! nbrk 2: * $Id: fcons.c,v 1.4 2007/10/29 21:10:02 init Exp $
1.1 init 3: */
4: #include <sys/types.h>
5: #include <sys/device.h>
6: #include <dev/fcons/fconsvar.h>
7: #include <libkern/printf.h>
1.5 ! nbrk 8: #include <libkern/queue.h>
1.1 init 9:
10: /*
11: * funnyOS console.
12: * 80x25, monochrome.
13: */
14:
15: /* current console device */
1.2 init 16: struct fcons_dd *curcons;
1.1 init 17:
18: extern void (*putchar)(char);
19:
1.2 init 20: int fcons_attach(struct device *, uint32_t loc, uint8_t flags);
21: void fcons_putchar(void *ddp, char);
22: char fcons_getchar(void *ddp);
1.1 init 23: void fcons_dfltputchar(char);
24: int fcons_devctl(struct device *, uint8_t, void *);
25:
1.2 init 26: struct driver fcons_dr = {
27: sizeof(struct fcons_dd),
28: fcons_attach,
1.4 init 29: NULL,
1.2 init 30: NULL
31: };
32:
1.1 init 33: int
1.2 init 34: fcons_attach(struct device *self, uint32_t loc, uint8_t size)
1.1 init 35: {
1.2 init 36: struct fcons_dd *ddp = self->dv_devdata;
1.1 init 37:
1.3 init 38: /* link our parent's dv_aux (fcons_handle) to us */
39: ddp->fd_fh = self->dv_parent->dv_aux;
40:
1.2 init 41: ddp->fd_currow = 0;
42: ddp->fd_curcol = 0;
1.1 init 43:
1.5 ! nbrk 44: /* initialize iqueue */
! 45: // ddp->fd_iqhead = SIMPLEQ_HEAD_INITIALIZER(ddp->fd_iqhead);
! 46: SIMPLEQ_INIT(ddp->head);
! 47: ddp->fd_iqlength = 0;
! 48:
1.2 init 49: /* make current console default */
50: curcons = ddp;
1.1 init 51:
52: /* override early putchar */
53: putchar = fcons_dfltputchar;
54:
55: printf("system console (80x25, monochrome, no video buffer)\n");
56:
57: return(0);
58: }
59:
60:
61: void
1.2 init 62: fcons_putchar(void *ddp, char ch)
1.1 init 63: {
1.2 init 64: struct fcons_dd *fdp = ddp;
1.3 init 65: struct fcons_handle *fhp = fdp->fd_fh;
1.1 init 66:
1.2 init 67: /* if we reach screen width */
68: if (fdp->fd_curcol == (FCONS_WIDTH - 1)) {
1.1 init 69: /* CRLF */
1.2 init 70: fdp->fd_curcol = 0;
71: fdp->fd_currow++;
1.1 init 72:
73: /* XXX pass \n to lower level (not all devices work this way) */
1.2 init 74: fhp->putc(fhp->fh_ownerdd, '\n');
1.1 init 75: }
76: /* XXX do something if col == FCONS_HEIGHT; console buffer? */
77:
1.2 init 78: /* if we reach the bottom of the screen */
79: if (fdp->fd_currow == FCONS_HEIGHT) {
80: /* XXX tmp hack; should really follow clrscr */
81: fdp->fd_currow = 0;
1.1 init 82: }
83:
1.2 init 84: fhp->putc(fhp->fh_ownerdd, ch);
1.1 init 85: }
86:
87:
88: char
1.2 init 89: fcons_getchar(void *ddp)
1.1 init 90: {
91: /* TODO */
92: return ' ';
93: }
94:
95:
96: void
97: fcons_dfltputchar(char ch)
98: {
99: /*
100: * Put a character into default (current) console.
101: */
102: fcons_putchar(curcons, ch);
103:
104: return;
1.5 ! nbrk 105: }
! 106:
! 107:
! 108: void
! 109: fcons_ienqueue(char ch)
! 110: {
! 111: /*
! 112: * Enqueue character into the input data queue.
! 113: */
! 114: struct fcons_dd *ddp;
! 115: struct fcons_char *curfc;
! 116: uint32_t i;
! 117:
! 118: /* XXX will use curcons devdata */
! 119: ddp = curcons;
! 120:
! 121: #if 0
! 122: if (ddp->fd_iqueue == NULL) {
! 123: /* first insertion */
! 124: curfc = kmalloc(sizeof(struct fcons_char));
! 125:
! 126: if(curfc == NULL)
! 127: panic("fcons_ienqueue: can't allocate memory for new element\n");
! 128: } else {
! 129: curfc = ddp->fd_iqueue;
! 130:
! 131: /* locate last element */
! 132: for(i = 0; i < ddp->fd_iqlength - 1; i++)
! 133: curfc = curfc->fc_next;
! 134: }
! 135: #endif
! 136: curfc = kmalloc(sizeof(struct fcons_char));
! 137: if(curfc == NULL)
! 138: panic("fcons_ienqueue: can't allocate memory for new element\n");
! 139:
! 140: SIMPLEQ_INSERT_TAIL(ddp->fd_iqhead, curfc, fc_next);
1.1 init 141: }
142:
1.2 init 143: #if 0
1.1 init 144: int
145: fcons_devctl(struct device *devp, uint8_t ctl, void *data)
146: {
147: /*
148: * Devctl support for fcons device.
149: */
150: switch(ctl) {
151: case DCFCONS_GETCURROW:
152: /* return cursor's row */
153: data = &fcons_dd[devp->dv_minor].currow;
154: return(0);
155: case DCFCONS_GETCURCOL:
156: /* return cursor's column */
157: data = &fcons_dd[devp->dv_minor].curcol;
158: return(0);
159: case DCFCONS_PUTCHAR:
160: /* put a character to the device */
161: fcons_putchar(devp, *(char*)data);
162: return(0);
163: case DCFCONS_GETCHAR:
164: /* get a character from the device */
165: /* TODO */
166: return(-1);
167: default:
168: /* unknown devctl */
169: return(-1);
170: }
171:
172: }
1.2 init 173: #endif /* not 0 */
1.1 init 174:
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