patch-2.1.115 linux/drivers/sbus/char/tcx.c

• Lines: 381
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.114/linux/drivers/sbus/char/tcx.c
• Orig date: Thu Apr 23 20:21:34 1998

diff -u --recursive --new-file v2.1.114/linux/drivers/sbus/char/tcx.c linux/drivers/sbus/char/tcx.c
@@ -1,380 +0,0 @@
-/* $Id: tcx.c,v 1.22 1998/03/10 20:18:47 jj Exp $
- * tcx.c: SUNW,tcx 24/8bit frame buffer driver
- *
- * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
- * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
- */
-
-#include <linux/kd.h>
-#include <linux/tty.h>
-#include <linux/malloc.h>
-#include <linux/proc_fs.h>
-
-#include <asm/sbus.h>
-#include <asm/io.h>
-#include <asm/fbio.h>
-#include <asm/pgtable.h>
-
-/* These must be included after asm/fbio.h */
-#include <linux/vt_kern.h>
-#include <linux/selection.h>
-#include <linux/console_struct.h>
-#include "fb.h"
-#include "cg_common.h"
-
-/* Offset of interesting structures in the tcx registers */
-#define TCX_RAM8BIT_OFFSET	0
-#define TCX_CONTROLPLANE_OFFSET 4
-#define TCX_BROOKTREE_OFFSET 	8
-#define TCX_THC_OFFSET		9
-#define TCX_TEC_OFFSET		7
-
-/* THC definitions */
-#define TCX_THC_MISC_REV_SHIFT       16
-#define TCX_THC_MISC_REV_MASK        15
-#define TCX_THC_MISC_VSYNC_DIS       (1 << 25)
-#define TCX_THC_MISC_HSYNC_DIS       (1 << 24)
-#define TCX_THC_MISC_RESET           (1 << 12)
-#define TCX_THC_MISC_VIDEO           (1 << 10)
-#define TCX_THC_MISC_SYNC            (1 << 9)
-#define TCX_THC_MISC_VSYNC           (1 << 8)
-#define TCX_THC_MISC_SYNC_ENAB       (1 << 7)
-#define TCX_THC_MISC_CURS_RES        (1 << 6)
-#define TCX_THC_MISC_INT_ENAB        (1 << 5)
-#define TCX_THC_MISC_INT             (1 << 4)
-#define TCX_THC_MISC_INIT            0x9f
-#define TCX_THC_REV_REV_SHIFT        20
-#define TCX_THC_REV_REV_MASK         15
-#define TCX_THC_REV_MINREV_SHIFT     28
-#define TCX_THC_REV_MINREV_MASK      15
-
-/* The contents are unknown */
-struct tcx_tec {
-	volatile int tec_matrix;
-	volatile int tec_clip;
-	volatile int tec_vdc;
-};
-
-struct tcx_thc {
-	volatile uint thc_rev;
-        uint thc_pad0[511];
-	volatile uint thc_hs;		/* hsync timing */
-	volatile uint thc_hsdvs;
-	volatile uint thc_hd;
-	volatile uint thc_vs;		/* vsync timing */
-	volatile uint thc_vd;
-	volatile uint thc_refresh;
-	volatile uint thc_misc;
-	uint thc_pad1[56];
-	volatile uint thc_cursxy;	/* cursor x,y position (16 bits each) */
-	volatile uint thc_cursmask[32];	/* cursor mask bits */
-	volatile uint thc_cursbits[32];	/* what to show where mask enabled */
-};
-
-static void
-tcx_restore_palette (fbinfo_t *fbinfo)
-{
-	volatile struct bt_regs *bt;
-
-	bt = fbinfo->info.tcx.bt;
-	bt->addr = 0;
-	bt->color_map = 0xffffffff;
-	bt->color_map = 0xffffffff;
-	bt->color_map = 0xffffffff;
-}
-
-static void
-tcx_set_control_plane (fbinfo_t *fb)
-{
-	register uint *p, *pend;
-	
-	p = fb->info.tcx.tcx_cplane;
-	if (!p) return;
-	for (pend = p + (fb->info.tcx.tcx_sizes [TCX_CONTROLPLANE_OFFSET] >> 2); p < pend; p++)
-		*p &= 0xffffff;
-}
-
-static void
-tcx_switch_from_graph (void)
-{
-	fbinfo_t *fb = &(fbinfo [0]);
-
-	/* Reset control plane to 8bit mode if necessary */
-	if (fb->open && fb->mmaped)
-		tcx_set_control_plane (fb);
-}
-
-/* Ugh: X wants to mmap a bunch of cute stuff at the same time :-( */
-/* So, we just mmap the things that are being asked for */
-static int
-tcx_mmap (struct inode *inode, struct file *file, struct vm_area_struct *vma,
-	  long base, fbinfo_t *fb)
-{
-	uint size, page, r, map_size;
-	unsigned long map_offset = 0;
-	uint i;
-	long offsets[13] = { -1, TCX_RAM24BIT, TCX_UNK3, TCX_UNK4,
-			     -1, TCX_UNK6, TCX_UNK7,
-			     -1, -1, -1, TCX_UNK2, TCX_DHC, TCX_ALT };
-			     
-	size = vma->vm_end - vma->vm_start;
-        if (vma->vm_offset & ~PAGE_MASK)
-                return -ENXIO;
-
-	/* To stop the swapper from even considering these pages */
-	vma->vm_flags |= FB_MMAP_VM_FLAGS;
-	
-	/* Each page, see which map applies */
-	for (page = 0; page < size; ){
-		switch (vma->vm_offset+page){
-		case TCX_RAM8BIT:
-			map_size = fb->type.fb_size;
-			map_offset = get_phys ((unsigned long) fb->base);
-			break;
-		case TCX_TEC:
-			map_size = PAGE_SIZE;
-			map_offset = get_phys ((unsigned long)fb->info.tcx.tec);
-			break;
-		case TCX_BTREGS:
-			map_size = PAGE_SIZE;
-			map_offset = get_phys ((unsigned long)fb->info.tcx.bt);
-			break;
-		case TCX_THC:
-			map_size = PAGE_SIZE;
-			map_offset = get_phys ((unsigned long)fb->info.tcx.thc);
-			break;
-		case TCX_CONTROLPLANE:
-			if (fb->info.tcx.tcx_cplane) {
-				map_size = fb->info.tcx.tcx_sizes [TCX_CONTROLPLANE_OFFSET];
-				map_offset = get_phys ((unsigned long)fb->info.tcx.tcx_cplane);
-			} else
-				map_size = 0;
-			break;
-		default:
-			map_size = 0;
-			for (i = 0; i < 13; i++)
-				if (offsets [i] == vma->vm_offset+page) {
-					if ((map_size = fb->info.tcx.tcx_sizes [i]))
-						map_offset = fb->info.tcx.tcx_offsets [i];
-					break;
-				}
-			break;
-		}
-		if (!map_size){
-			page += PAGE_SIZE;
-			continue;
-		}
-		if (page + map_size > size)
-			map_size = size - page;
-		r = io_remap_page_range (vma->vm_start+page,
-					 map_offset,
-					 map_size, vma->vm_page_prot,
-					 fb->space);
-		if (r)
-			return -EAGAIN;
-		page += map_size;
-	}
-
-	vma->vm_file = file;
-	file->f_count++;
-        return 0;
-}
-
-static void
-tcx_loadcmap (fbinfo_t *fb, int index, int count)
-{
-	struct bt_regs *bt = fb->info.tcx.bt;
-	int i;
-	
-	bt->addr = index << 24;
-	for (i = index; count--; i++){
-		bt->color_map = fb->color_map CM(i,0) << 24;
-		bt->color_map = fb->color_map CM(i,1) << 24;
-		bt->color_map = fb->color_map CM(i,2) << 24;
-	}
-	bt->addr = 0;
-}
-
-static void
-tcx_setcursormap (fbinfo_t *fb, unsigned char *red,
-				 unsigned char *green,
-				 unsigned char *blue)
-{
-	struct bt_regs *bt = fb->info.tcx.bt;
-
-	/* Note the 2 << 24 is different from cg6's 1 << 24 */
-	bt->addr = 2 << 24;
-	bt->cursor = red[0] << 24;
-	bt->cursor = green[0] << 24;
-	bt->cursor = blue[0] << 24;
-	bt->addr = 3 << 24;
-	bt->cursor = red[1] << 24;
-	bt->cursor = green[1] << 24;
-	bt->cursor = blue[1] << 24;
-	bt->addr = 0;
-}
-
-/* Load cursor information */
-static void
-tcx_setcursor (fbinfo_t *fb)
-{
-	uint v;
-	struct cg_cursor *c = &fb->cursor;
-
-	if (c->enable){
-		v = ((c->cpos.fbx - c->chot.fbx) << 16)
-		   |((c->cpos.fby - c->chot.fby) & 0xffff);
-	} else {
-		/* Magic constant to turn off the cursor */
-		v = ((65536-32) << 16) | (65536-32);
-	}
-	fb->info.tcx.thc->thc_cursxy = v;
-}
-
-/* Set cursor shape */
-static void
-tcx_setcurshape (fbinfo_t *fb)
-{
-	struct tcx_thc *thc = fb->info.tcx.thc;
-	int i;
-	
-	for (i = 0; i < 32; i++){
-		thc->thc_cursmask [i] = fb->cursor.bits[0][i];
-		thc->thc_cursbits [i] = fb->cursor.bits[1][i];
-	}
-}
-
-static void
-tcx_blank (fbinfo_t *fb)
-{
-	fb->info.tcx.thc->thc_misc &= ~TCX_THC_MISC_VIDEO;
-	/* This should put us in power-save */
-        fb->info.tcx.thc->thc_misc |= TCX_THC_MISC_VSYNC_DIS;
-        fb->info.tcx.thc->thc_misc |= TCX_THC_MISC_HSYNC_DIS;
-}
-
-static void
-tcx_unblank (fbinfo_t *fb)
-{
-        fb->info.tcx.thc->thc_misc &= ~TCX_THC_MISC_VSYNC_DIS;
-        fb->info.tcx.thc->thc_misc &= ~TCX_THC_MISC_HSYNC_DIS;
-	fb->info.tcx.thc->thc_misc |= TCX_THC_MISC_VIDEO;
-}
-
-void
-tcx_reset (fbinfo_t *fb)
-{
-	struct tcx_info *tcx = &(fb->info.tcx);
-
-	if (fb->setcursor && fb == &fbinfo[0])
-		sbus_hw_hide_cursor ();
-	/* Reset control plane to 8bit mode if necessary */
-	if (fb->open && fb->mmaped)
-		tcx_set_control_plane (fb);
-
-	/* Turn off stuff in the Transform Engine. */
-	tcx->tec->tec_matrix = 0;
-	tcx->tec->tec_clip = 0;
-	tcx->tec->tec_vdc = 0;
-
-	/* Enable cursor in Brooktree DAC. */
-	tcx->bt->addr = 0x06 << 24;
-	tcx->bt->control |= 0x03 << 24;
-}
-
-__initfunc(void tcx_setup (fbinfo_t *fb, int slot, int node, u32 tcx, struct linux_sbus_device *sbdp))
-{
-	struct tcx_info *tcxinfo;
-	int i;
-
-	printk ("tcx%d at 0x%8.8x ", slot, tcx);
-	
-	/* Fill in parameters we left out */
-	fb->type.fb_cmsize = 256;
-	fb->mmap = tcx_mmap;
-	fb->loadcmap = tcx_loadcmap;
-	fb->reset = tcx_reset;
-	fb->blank = tcx_blank;
-	fb->unblank = tcx_unblank;
-	fb->emulations [1] = FBTYPE_SUN3COLOR;
-	fb->emulations [2] = FBTYPE_MEMCOLOR;
-	fb->switch_from_graph = tcx_switch_from_graph;
-	fb->postsetup = cg_postsetup;
-	
-	tcxinfo = (struct tcx_info *) &fb->info.tcx;
-	
-	memset (tcxinfo, 0, sizeof(struct tcx_info));
-	
-	for (i = 0; i < 13; i++)
-		tcxinfo->tcx_offsets [i] = (long)(sbdp->reg_addrs [i].phys_addr);
-		
-	/* Map the hardware registers */
-	tcxinfo->bt = sparc_alloc_io((u32)tcxinfo->tcx_offsets [TCX_BROOKTREE_OFFSET], 0,
-		 sizeof (struct bt_regs),"tcx_dac", fb->space, 0);
-	tcxinfo->thc = sparc_alloc_io((u32)tcxinfo->tcx_offsets [TCX_THC_OFFSET], 0,
-		 sizeof (struct tcx_thc), "tcx_thc", fb->space, 0);
-	tcxinfo->tec = sparc_alloc_io((u32)tcxinfo->tcx_offsets [TCX_TEC_OFFSET], 0,
-		 sizeof (struct tcx_tec), "tcx_tec", fb->space, 0);
-	if (!fb->base){
-		fb->base = (uint) (unsigned long)
-			sparc_alloc_io((u32)tcxinfo->tcx_offsets [TCX_RAM8BIT_OFFSET],
-				       0, fb->type.fb_size, "tcx_ram", fb->space, 0);
-	}
-	
-	if (prom_getbool (node, "hw-cursor")) {
-		fb->setcursor = tcx_setcursor;
-		fb->setcursormap = tcx_setcursormap;
-		fb->setcurshape = tcx_setcurshape;
-	}
-		
-	if (!slot) {
-		fb_restore_palette = tcx_restore_palette;
-	}
-	
-	i = fb->type.fb_size;
-	tcxinfo->tcx_sizes[2] = i << 3;
-	tcxinfo->tcx_sizes[3] = i << 3;
-	tcxinfo->tcx_sizes[10] = 0x20000;
-	tcxinfo->tcx_sizes[11] = PAGE_SIZE;
-	tcxinfo->tcx_sizes[12] = PAGE_SIZE;
-	
-	if (prom_getbool (node, "tcx-8-bit"))
-		tcxinfo->lowdepth = 1;
-		
-	if (!tcxinfo->lowdepth) {
-		tcxinfo->tcx_sizes[1] = i << 2;
-		tcxinfo->tcx_sizes[4] = i << 2;
-		tcxinfo->tcx_sizes[5] = i << 3;
-		tcxinfo->tcx_sizes[6] = i << 3;
-		fb->type.fb_depth = 24;
-		tcxinfo->tcx_cplane =
-		   sparc_alloc_io((u32)tcxinfo->tcx_offsets[TCX_CONTROLPLANE_OFFSET], 0,
-				  tcxinfo->tcx_sizes [TCX_CONTROLPLANE_OFFSET],
-				  "tcx_cplane", fb->space, 0);
-	}
-	
-	/* Initialize Brooktree DAC */
-	tcxinfo->bt->addr = 0x04 << 24;		/* color planes */
-	tcxinfo->bt->control = 0xff << 24;
-	tcxinfo->bt->addr = 0x05 << 24;
-	tcxinfo->bt->control = 0x00 << 24;
-	tcxinfo->bt->addr = 0x06 << 24;		/* overlay plane */
-	tcxinfo->bt->control = 0x73 << 24;
-	tcxinfo->bt->addr = 0x07 << 24;
-	tcxinfo->bt->control = 0x00 << 24;
-
-	printk("Rev %d.%d %s\n",
-		(tcxinfo->thc->thc_rev >> TCX_THC_REV_REV_SHIFT) & TCX_THC_REV_REV_MASK,
-		(tcxinfo->thc->thc_rev >> TCX_THC_REV_MINREV_SHIFT) & TCX_THC_REV_MINREV_MASK,
-		tcxinfo->lowdepth ? "8-bit only" : "24-bit depth");
-	
-	/* Reset the tcx */
-	tcx_reset(fb);
-
-	if (!slot)	
-	/* Enable Video */
-		tcx_unblank (fb);
-	else
-		tcx_blank (fb);
-}