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-rw-r--r--chips/pm_misc.c594
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diff --git a/chips/pm_misc.c b/chips/pm_misc.c
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-/*
- * Mach Operating System
- * Copyright (c) 1991,1990,1989 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
-/*
- * File: pm_misc.c
- * Author: Alessandro Forin, Carnegie Mellon University
- * Date: 9/90
- *
- * Driver for the VFB01/02 Mono/Color framebuffer (pmax)
- * Hardware-independent operations, mostly shared with
- * the CFB driver (see each individual function header),
- * and possibly others.
- */
-
-
-#include <platforms.h>
-
-#include <fb.h>
-
-#if defined(DECSTATION) || defined(FLAMINGO)
-#include <cfb.h>
-#include <mfb.h>
-#include <xcfb.h>
-#include <sfb.h>
-#define NPM (NFB+NCFB+NMFB+NXCFB+NSFB)
-#endif /*DECSTATION*/
-
-#ifdef VAXSTATION
-#define NPM (NFB)
-#endif /*VAXSTATION*/
-
-
-#if (NPM > 0)
-
-#include <mach/vm_param.h> /* PAGE_SIZE */
-#include <device/device_types.h>
-#include <vm/vm_map.h> /* kernel_pmap */
-
-#include <chips/screen_defs.h>
-#include <chips/pm_defs.h>
-
-
-#ifdef DECSTATION
-#define machine_btop mips_btop
-#define MONO_BM (256*1024)
-#endif /*DECSTATION*/
-
-#ifdef VAXSTATION
-#define machine_btop vax_btop
-/*
- For now we use the last page of the frame for
- the user_info structure.
-*/
-#define MONO_BM (256*1024-PAGE_SIZE)
-#endif /*VAXSTATION*/
-
-#ifdef FLAMINGO
-#define machine_btop alpha_btop
-#define MONO_BM (256*1024)
-#define LOG2_SIZEOF_LONG 3 /* 64bit archies */
-#endif /* FLAMINGO */
-
-#ifndef LOG2_SIZEOF_LONG
-#define LOG2_SIZEOF_LONG 2 /* 32bit archies */
-#endif
-
-
-/* Hardware state */
-pm_softc_t pm_softc_data[NPM];
-
-pm_softc_t*
-pm_alloc(
- int unit,
- char *cur,
- unsigned char *fb,
- unsigned char *pl)
-{
- pm_softc_t *pm = &pm_softc_data[unit];
-
- pm->cursor_registers = cur;
- pm->framebuffer = fb;
- pm->plane_mask = pl;
- pm->vdac_registers = 0; /* later, if ever */
-
- screen_attach(unit, (char *) pm);
-
- return pm;
-}
-
-
-/*
- * Routine to paint a char on a simple framebuffer.
- * This is common to the pm, fb and cfb drivers.
- */
-pm_char_paint(
- screen_softc_t sc,
- int c,
- int row,
- int col)
-{
- register int incr;
- int line_size;
- register unsigned char *font, *bmap;
- pm_softc_t *pm = (pm_softc_t*)sc->hw_state;
-
- /*
- * Here are the magic numbers that drive the loops below:
- * incr bytes between scanlines of the glyph
- * line_size bytes in a row, using the system font
- *
- * This code has been optimized to avoid multiplications,
- * and is therefore much less obvious than it could be.
- */
- if (sc->flags & MONO_SCREEN) {
- /*
- * B&W screen: 1 bit/pixel
- * incr --> 1 * BytesPerLine, with possible stride
- */
- incr = sc->frame_scanline_width >> 3;
- } else {
- /*
- * Color screen: 8 bits/pixel
- * incr --> 8 * BytesPerLine, with possible stride
- */
- incr = sc->frame_scanline_width;
- col <<= 3;
- }
-
- /* not all compilers are smart about multiply by 15 */
-#if (KfontHeight==15)
-# define TIMES_KfontHeight(w) (((w)<<4)-(w))
-#else
-# define TIMES_KfontHeight(w) ((w)*KfontHeight)
-#endif
- line_size = TIMES_KfontHeight(incr);
-
- bmap = pm->framebuffer + col + (row * line_size);
- font = &kfont_7x14[ (int)(c - ' ') * 15];
- if (sc->flags & MONO_SCREEN) {
- /*
- * Unroll simple loops, take note of common cases
- */
- if (sc->standout) {
-# define mv() *bmap = ~*font++; bmap += incr;
- mv();mv();mv();mv();mv();mv();mv();mv();
- mv();mv();mv();mv();mv();mv();mv();
-# undef mv
- } else if (c == ' ') {
-# define mv() *bmap = 0; bmap += incr;
- mv();mv();mv();mv();mv();mv();mv();mv();
- mv();mv();mv();mv();mv();mv();mv();
-# undef mv
- } else {
-# define mv() *bmap = *font++; bmap += incr;
- mv();mv();mv();mv();mv();mv();mv();mv();
- mv();mv();mv();mv();mv();mv();mv();
-# undef mv
- }
- } else {
- /*
- * 8 bits per pixel --> paint one byte per each font bit.
- * In order to spread out the 8 bits of a glyph line over
- * the 64 bits per scanline use a simple vector multiply,
- * taking 4 bits at a time to get the two resulting words
- */
- static unsigned int spread[16] = {
- 0x00000000, 0x00000001, 0x00000100, 0x00000101,
- 0x00010000, 0x00010001, 0x00010100, 0x00010101,
- 0x01000000, 0x01000001, 0x01000100, 0x01000101,
- 0x01010000, 0x01010001, 0x01010100, 0x01010101,
- };
- register int rev_video = sc->standout;
- register int j;
- for (j = 0; j < KfontHeight; j++) {
- register unsigned char c = *font++;
- if (rev_video) c = ~c;
-#if (LOG2_SIZEOF_LONG==3)
- *((long*)bmap) = (long)spread[ c & 0xf ] |
- ((long)(spread[ (c>>4) & 0xf ]) << 32);
-#else
- ((int*)bmap)[0] = spread[ c & 0xf ];
- ((int*)bmap)[1] = spread[ (c>>4) & 0xf ];
-#endif
- bmap += incr;
- }
- }
-}
-
-/*
- * Delete the line at the given row.
- * This is common to the pm, fb and cfb drivers.
- */
-pm_remove_line(
- screen_softc_t sc,
- short row)
-{
- register long *dest, *src;
- register long *end;
- register long temp0,temp1,temp2,temp3;
- register long i, scaninc, blockcnt;
- long line_size, incr;
- unsigned char *framebuffer;
- pm_softc_t *pm = (pm_softc_t*)sc->hw_state;
- long CharRows, CharCols;
-
- CharRows = sc->up->max_row;
- CharCols = sc->up->max_col;
- framebuffer = pm->framebuffer;
-
- /* Inner loop works 4 long words at a time (writebuffer deep) */
-# define BlockSizeShift (2+LOG2_SIZEOF_LONG)
-
- /* To copy one (MONO) line, we need to iterate this many times */
-# define Blocks (CharCols>>BlockSizeShift)
-
- /* Skip this many bytes to get to the next line */
-# define Slop(w) ((w) - (blockcnt<<BlockSizeShift))
-
- if (sc->flags & MONO_SCREEN) {
- blockcnt = Blocks;
- /* See comments in pm_char_paint() */
- incr = sc->frame_scanline_width >> 3;
- } else {
- blockcnt = Blocks << 3;
- /* See comments in pm_char_paint() */
- incr = sc->frame_scanline_width;
- }
- line_size = TIMES_KfontHeight(incr);
-
- scaninc = (Slop(incr)) >> LOG2_SIZEOF_LONG; /* pointers are long* */
-
- dest = (long *)(framebuffer + row * line_size);
- src = (long *)((char*)dest + line_size);
- end = (long *)(framebuffer + CharRows * line_size);
- while (src < end) {
- i = 0;
- do {
- temp0 = src[0];
- temp1 = src[1];
- temp2 = src[2];
- temp3 = src[3];
- dest[0] = temp0;
- dest[1] = temp1;
- dest[2] = temp2;
- dest[3] = temp3;
- dest += 4;
- src += 4;
- i++;
- } while (i < blockcnt);
- src += scaninc;
- dest += scaninc;
- }
-
- /* Now zero out the last line */
- bzero(framebuffer + (CharRows - 1) * line_size, line_size);
-
- ascii_screen_rem_update(sc, row);
-}
-
-
-/*
- * Open a new blank line at the given row.
- * This is common to the pm, fb and cfb drivers.
- */
-pm_insert_line(
- screen_softc_t sc,
- short row)
-{
- register long *dest, *src;
- register long *end;
- register long temp0,temp1,temp2,temp3;
- register long i, scaninc, blockcnt;
- long line_size, incr;
- unsigned char *framebuffer;
- pm_softc_t *pm = (pm_softc_t*)sc->hw_state;
- long CharRows, CharCols;
-
- CharRows = sc->up->max_row;
- CharCols = sc->up->max_col;
-
- framebuffer = pm->framebuffer;
-
- /* See above for comments */
- if (sc->flags & MONO_SCREEN) {
- blockcnt = Blocks;
- /* See comments in pm_char_paint() */
- incr = sc->frame_scanline_width >> 3;
- } else {
- blockcnt = Blocks << 3;
- /* See comments in pm_char_paint() */
- incr = sc->frame_scanline_width;
- }
- line_size = TIMES_KfontHeight(incr);
-
- scaninc = Slop(incr) + ((2 * blockcnt) << BlockSizeShift);
- scaninc >>= LOG2_SIZEOF_LONG; /* pointers are long* */
- dest = (long *)(framebuffer + (CharRows - 1) * line_size);
- src = (long *)((char*)dest - line_size);
- end = (long *)(framebuffer + row * line_size);
- while (src >= end) {
- i = 0;
- do {
- temp0 = src[0];
- temp1 = src[1];
- temp2 = src[2];
- temp3 = src[3];
- dest[0] = temp0;
- dest[1] = temp1;
- dest[2] = temp2;
- dest[3] = temp3;
- dest += 4;
- src += 4;
- i++;
- } while (i < blockcnt);
- src -= scaninc;
- dest -= scaninc;
- }
-
- /* Now zero out the line being opened */
- bzero(framebuffer + row * line_size, line_size);
-
- ascii_screen_ins_update(sc, row);
-}
-
-#undef Slop
-
-
-/*
- * Initialize screen parameters in the
- * user-mapped descriptor.
- * This is common to various drivers.
- */
-pm_init_screen_params(
- screen_softc_t sc,
- user_info_t *up)
-{
- register int vis_x, vis_y;
-
- up->frame_scanline_width = sc->frame_scanline_width;
- up->frame_height = sc->frame_height;
-
- vis_x = sc->frame_visible_width;
- vis_y = sc->frame_visible_height;
-
- up->max_x = vis_x;
- up->max_y = vis_y;
- up->max_cur_x = vis_x - 1;
- up->max_cur_y = vis_y - 1;
- up->min_cur_x = -15;
- up->min_cur_y = -15;
- up->max_row = vis_y / KfontHeight;
- up->max_col = vis_x / KfontWidth;
-
- up->version = 11;
-
- up->mouse_threshold = 4;
- up->mouse_scale = 2;
-
- up->dev_dep_2.pm.tablet_scale_x = ((vis_x - 1) * 1000) / 2200;
- up->dev_dep_2.pm.tablet_scale_y = ((vis_y - 1) * 1000) / 2200;
-}
-
-/*
- * Clear the screen
- * Used by pm, fb and cfb
- */
-pm_clear_bitmap(
- screen_softc_t sc)
-{
- pm_softc_t *pm = (pm_softc_t *) sc->hw_state;
- unsigned int screen_size;
-
- /* Do not touch the non visible part */
- screen_size = sc->frame_scanline_width * sc->frame_visible_height;
- blkclr((char *)pm->framebuffer,
- (sc->flags & MONO_SCREEN) ? (screen_size>>3) : screen_size);
-
- /* clear ascii screenmap */
- ascii_screen_fill(sc, ' ');
-}
-
-
-/*
- * Size of the user-mapped structure
- * Used by both pm and cfb
- */
-pm_mem_need()
-{
- return USER_INFO_SIZE;
-}
-
-/*
- * Device-specific get status.
- * Used by fb and cfb also.
- */
-pm_get_status(
- screen_softc_t sc,
- dev_flavor_t flavor,
- dev_status_t status,
- natural_t *status_count)
-{
- if (flavor == SCREEN_GET_OFFSETS) {
- unsigned *offs = (unsigned *) status;
-
- offs[0] = PM_SIZE(sc); /* virtual size */
- offs[1] = 0; /* offset of user_info_t */
- *status_count = 2;
- return D_SUCCESS;
- } else
- return D_INVALID_OPERATION;
-}
-
-/*
- * Driver-specific set status
- * Only partially used by fb and cfb.
- */
-pm_set_status(
- screen_softc_t sc,
- dev_flavor_t flavor,
- dev_status_t status,
- natural_t status_count)
-{
- switch (flavor) {
- case SCREEN_ADJ_MAPPED_INFO: {
- unsigned user_addr = *(unsigned *) status;
- user_info_t *up = sc->up;
-
- /* Make it point to the event_queue, in user virtual */
- up->evque.events = (screen_event_t *)(user_addr +
- ((char*)up->event_queue - (char*)up));
-
- /* Make it point to the point_track, in user virtual */
- up->evque.track = (screen_timed_point_t *)(user_addr +
- ((char*)up->point_track - (char*)up));
-
- up->dev_dep_1.pm.planemask = (unsigned char *)(user_addr + USER_INFO_SIZE);
-
- up->dev_dep_1.pm.bitmap = up->dev_dep_1.pm.planemask + PMASK_SIZE;
-
- break;
- }
-
- case SCREEN_LOAD_CURSOR: {
-
- sc->flags |= SCREEN_BEING_UPDATED;
- dc503_load_cursor(sc->hw_state, (unsigned short*)status);
- sc->flags &= ~SCREEN_BEING_UPDATED;
-
- break;
- }
-
-#ifdef DECSTATION
- case SCREEN_SET_CURSOR_COLOR: {
- pm_softc_t *pm = (pm_softc_t*) sc->hw_state;
-
- sc->flags |= SCREEN_BEING_UPDATED;
- bt478_cursor_color (pm->vdac_registers, (cursor_color_t*) status);
- sc->flags &= ~SCREEN_BEING_UPDATED;
-
- break;
- }
-
- case SCREEN_SET_CMAP_ENTRY: {
- pm_softc_t *pm = (pm_softc_t*) sc->hw_state;
- color_map_entry_t *e = (color_map_entry_t*) status;
-
- if (e->index < 256) {
- sc->flags |= SCREEN_BEING_UPDATED;
- bt478_load_colormap_entry( pm->vdac_registers, e->index, &e->value);
- sc->flags &= ~SCREEN_BEING_UPDATED;
- }
-
- break;
- }
-#endif /*DECSTATION*/
- default:
- return D_INVALID_OPERATION;
- }
- return D_SUCCESS;
-}
-
-/*
- * Map pages to user space
- */
-vm_offset_t pm_map_page_empty = (vm_offset_t) 0;
-
-integer_t
-pm_map_page(
- screen_softc_t sc,
- vm_offset_t off,
- int prot)
-{
- int bitmapsize;
- integer_t addr;
- pm_softc_t *pm = (pm_softc_t *)sc->hw_state;
- extern vm_offset_t pmap_extract( pmap_t map, vm_offset_t addr);
-
- bitmapsize = BITMAP_SIZE(sc);
-
-#define OFF0 USER_INFO_SIZE /* user mapped info */
-#define OFF1 OFF0+PMASK_SIZE /* plane mask register */
-#define OFF2 OFF1+bitmapsize /* frame buffer mem */
-
- if (off < OFF0)
-#ifdef DECSTATION
- addr = kvtophys(sc->up);
-#else
- addr = (integer_t) pmap_extract(kernel_pmap,
- (vm_offset_t)sc->up);
-#endif
- else
- if (off < OFF1) {
-#ifdef VAXSTATION
- if (pm_map_page_empty == 0) {
- pm_map_page_empty = vm_page_grab_phys_addr();
- }
- addr = (integer_t)pmap_extract(kernel_pmap, pm_map_page_empty);
-#else
- addr = (integer_t) pm->plane_mask;
-#endif
- off -= OFF0;
- } else
- if (off < OFF2) {
-#ifdef DECSTATION
- addr = (integer_t)pm->framebuffer;
-#else
- addr = (integer_t)pmap_extract(kernel_pmap,
- (vm_offset_t)pm->framebuffer);
-#endif
- off -= OFF1;
- } else
- return D_INVALID_SIZE; /* ??? */
-
- addr = machine_btop(addr + off);
- return (addr);
-}
-
-
-/*
- *-----------------------------------------------------------
- * The rest of this file is stricly pmax/pvax-specific
- *-----------------------------------------------------------
- */
-#if (NFB > 0)
-
-/*
- * Do what's needed when the X server exits
- */
-pm_soft_reset(
- screen_softc_t sc)
-{
- pm_softc_t *pm = (pm_softc_t*) sc->hw_state;
- user_info_t *up = sc->up;
-
- /*
- * Restore params in mapped structure
- */
- pm_init_screen_params(sc, up);
- up->row = up->max_row - 2;
- dc503_init(pm);
-
-#ifdef DECSTATION
- if (sc->flags & MONO_SCREEN)
- bt478_init_bw_map(pm->vdac_registers, pm->plane_mask);
- else
- bt478_init_color_map(pm->vdac_registers, pm->plane_mask);
-#endif /*DECSTATION*/
-}
-#endif /* NFB > 0 */
-
-
-#endif /* NPM > 0 */
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