xref: /onnv-gate/usr/src/uts/i86pc/io/gfx_private/gfxp_vgatext.c (revision 11762:91c82ea93957)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*	Copyright (c) 1990, 1991 UNIX System Laboratories, Inc.	*/
/*	Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T	*/
/*	  All Rights Reserved  	*/

#include <sys/errno.h>
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/kmem.h>
#include <sys/visual_io.h>
#include <sys/font.h>
#include <sys/fbio.h>
#include <sys/ddi.h>
#include <sys/stat.h>
#include <sys/sunddi.h>
#include <sys/file.h>
#include <sys/open.h>
#include <sys/modctl.h>
#include <sys/vgareg.h>
#include <sys/vgasubr.h>
#include <sys/pci.h>
#include <sys/kd.h>
#include <sys/ddi_impldefs.h>

#include "gfx_private.h"

#define	MYNAME	"gfxp_vgatext"

#define	TEXT_ROWS		25
#define	TEXT_COLS		80

#define	VGA_BRIGHT_WHITE	0x0f
#define	VGA_BLACK		0x00

#define	VGA_REG_ADDR		0x3c0
#define	VGA_REG_SIZE		0x20

#define	VGA_MEM_ADDR		0xa0000
#define	VGA_MEM_SIZE		0x20000

#define	VGA_MMAP_FB_BASE	VGA_MEM_ADDR

struct vgatext_softc {
	struct vgaregmap 	regs;
	struct vgaregmap 	fb;
	off_t			fb_size;
	int			fb_regno;
	dev_info_t		*devi;
	int			mode;	/* KD_TEXT or KD_GRAPHICS */
	caddr_t			text_base;	/* hardware text base */
	char			shadow[TEXT_ROWS*TEXT_COLS*2];
	caddr_t			current_base;	/* hardware or shadow */
	struct {
		boolean_t visible;
		int row;
		int col;
	}			cursor;
	struct vis_polledio	polledio;
	struct {
		unsigned char red;
		unsigned char green;
		unsigned char blue;
	}			colormap[VGA8_CMAP_ENTRIES];
	unsigned char attrib_palette[VGA_ATR_NUM_PLT];
	unsigned int flags;
	kmutex_t lock;
};

typedef enum pc_colors {
	pc_black	= 0,
	pc_blue		= 1,
	pc_green	= 2,
	pc_cyan		= 3,
	pc_red		= 4,
	pc_magenta	= 5,
	pc_brown	= 6,
	pc_white	= 7,
	pc_grey		= 8,
	pc_brt_blue	= 9,
	pc_brt_green	= 10,
	pc_brt_cyan	= 11,
	pc_brt_red	= 12,
	pc_brt_magenta	= 13,
	pc_yellow	= 14,
	pc_brt_white	= 15
} pc_colors_t;

static const unsigned char solaris_color_to_pc_color[16] = {
	pc_brt_white,		/*  0 - brt_white	*/
	pc_black,		/*  1 - black		*/
	pc_blue,		/*  2 - blue		*/
	pc_green,		/*  3 - green		*/
	pc_cyan,		/*  4 - cyan		*/
	pc_red,			/*  5 - red		*/
	pc_magenta,		/*  6 - magenta		*/
	pc_brown,		/*  7 - brown		*/
	pc_white,		/*  8 - white		*/
	pc_grey,		/*  9 - gery		*/
	pc_brt_blue,		/* 10 - brt_blue	*/
	pc_brt_green,		/* 11 - brt_green	*/
	pc_brt_cyan,		/* 12 - brt_cyan	*/
	pc_brt_red,		/* 13 - brt_red		*/
	pc_brt_magenta,		/* 14 - brt_magenta	*/
	pc_yellow		/* 15 - yellow		*/
};

static ddi_device_acc_attr_t dev_attr = {
	DDI_DEVICE_ATTR_V0,
	DDI_NEVERSWAP_ACC,
	DDI_STRICTORDER_ACC,
};

/* default structure for FBIOGATTR ioctl */
static struct fbgattr vgatext_attr =  {
/*	real_type	owner */
	FBTYPE_SUNFAST_COLOR, 0,
/* fbtype: type		h  w  depth cms  size */
	{ FBTYPE_SUNFAST_COLOR, TEXT_ROWS, TEXT_COLS, 1,    256,  0 },
/* fbsattr: flags emu_type	dev_specific */
	{ 0, FBTYPE_SUN4COLOR, { 0 } },
/*	emu_types */
	{ -1 }
};

#define	GFXP_FLAG_CONSOLE 0x00000001
#define	GFXP_IS_CONSOLE(softc) ((softc)->flags & GFXP_FLAG_CONSOLE)

/*
 * Global name used to write the softc pointer in, for the
 * data wrapper vgatext_return_pointers()
 */


int gfxp_vgatext_detach(dev_info_t *devi, ddi_detach_cmd_t cmd,
	gfxp_vgatext_softc_ptr_t ptr);
static int vgatext_devinit(struct vgatext_softc *, struct vis_devinit *data);
static void	vgatext_cons_copy(struct vgatext_softc *,
			struct vis_conscopy *);
static void	vgatext_cons_display(struct vgatext_softc *,
			struct vis_consdisplay *);
static void	vgatext_cons_cursor(struct vgatext_softc *,
			struct vis_conscursor *);
static void	vgatext_polled_copy(struct vis_polledio_arg *,
			struct vis_conscopy *);
static void	vgatext_polled_display(struct vis_polledio_arg *,
			struct vis_consdisplay *);
static void	vgatext_polled_cursor(struct vis_polledio_arg *,
			struct vis_conscursor *);
static void	vgatext_init(struct vgatext_softc *);
static void	vgatext_set_text(struct vgatext_softc *);

static void	vgatext_save_text(struct vgatext_softc *softc);
static void	vgatext_restore_textmode(struct vgatext_softc *softc);
static int	vgatext_suspend(struct vgatext_softc *softc);
static void	vgatext_resume(struct vgatext_softc *softc);

#if	defined(USE_BORDERS)
static void	vgatext_init_graphics(struct vgatext_softc *);
#endif

static int vgatext_kdsetmode(struct vgatext_softc *softc, int mode);
static void vgatext_setfont(struct vgatext_softc *softc);
static void vgatext_get_cursor(struct vgatext_softc *softc,
		screen_pos_t *row, screen_pos_t *col);
static void vgatext_set_cursor(struct vgatext_softc *softc, int row, int col);
static void vgatext_hide_cursor(struct vgatext_softc *softc);
static void vgatext_save_colormap(struct vgatext_softc *softc);
static void vgatext_restore_colormap(struct vgatext_softc *softc);
static int vgatext_get_pci_reg_index(dev_info_t *const devi,
		unsigned long himask, unsigned long hival, unsigned long addr,
		off_t *offset);
static int vgatext_get_isa_reg_index(dev_info_t *const devi,
		unsigned long hival, unsigned long addr, off_t *offset);

static char	vgatext_silent;
static char	happyface_boot;

gfxp_vgatext_softc_ptr_t
gfxp_vgatext_softc_alloc(void)
{
	return (kmem_zalloc(sizeof (struct vgatext_softc), KM_SLEEP));
}

void
gfxp_vgatext_softc_free(gfxp_vgatext_softc_ptr_t ptr)
{
	kmem_free(ptr, sizeof (struct vgatext_softc));
}

/*
 * NOTE: this function is duplicated here and in consplat/vgatext while
 *       we work on a set of commitable interfaces to sunpci.c.
 *
 * Use the class code to determine if the device is a PCI-to-PCI bridge.
 * Returns:  B_TRUE  if the device is a bridge.
 *           B_FALSE if the device is not a bridge or the property cannot be
 *		     retrieved.
 */
static boolean_t
is_pci_bridge(dev_info_t *dip)
{
	uint32_t class_code;

	class_code = (uint32_t)ddi_prop_get_int(DDI_DEV_T_ANY, dip,
	    DDI_PROP_DONTPASS, "class-code", 0xffffffff);

	if (class_code == 0xffffffff || class_code == DDI_PROP_NOT_FOUND)
		return (B_FALSE);

	class_code &= 0x00ffff00;
	if (class_code == ((PCI_CLASS_BRIDGE << 16) | (PCI_BRIDGE_PCI << 8)))
		return (B_TRUE);

	return (B_FALSE);
}

#define	STREQ(a, b)	(strcmp((a), (b)) == 0)

static void
gfxp_check_for_console(dev_info_t *devi, struct vgatext_softc *softc,
	int pci_pcie_bus)
{
	ddi_acc_handle_t pci_conf;
	dev_info_t *pdevi;
	uint16_t data16;

	/*
	 * Based on Section 11.3, "PCI Display Subsystem Initialization",
	 * of the 1.1 PCI-to-PCI Bridge Architecture Specification
	 * determine if this is the boot console device.  First, see
	 * if the SBIOS has turned on PCI I/O for this device.  Then if
	 * this is PCI/PCI-E, verify the parent bridge has VGAEnable set.
	 */

	if (pci_config_setup(devi, &pci_conf) != DDI_SUCCESS) {
		cmn_err(CE_WARN,
		    MYNAME
		    ": can't get PCI conf handle");
		return;
	}

	data16 = pci_config_get16(pci_conf, PCI_CONF_COMM);
	if (data16 & PCI_COMM_IO)
		softc->flags |= GFXP_FLAG_CONSOLE;

	pci_config_teardown(&pci_conf);

	/* If IO not enabled or ISA/EISA, just return */
	if (!(softc->flags & GFXP_FLAG_CONSOLE) || !pci_pcie_bus)
		return;

	/*
	 * Check for VGA Enable in the Bridge Control register for all
	 * PCI/PCIEX parents.  If not set all the way up the chain,
	 * this cannot be the boot console.
	 */

	pdevi = devi;
	while (pdevi = ddi_get_parent(pdevi)) {
		int	error;
		ddi_acc_handle_t ppci_conf;
		char	*parent_type = NULL;

		error = ddi_prop_lookup_string(DDI_DEV_T_ANY, pdevi,
		    DDI_PROP_DONTPASS, "device_type", &parent_type);
		if (error != DDI_SUCCESS) {
			return;
		}

		/* Verify still on the PCI/PCIEX parent tree */
		if (!STREQ(parent_type, "pci") &&
		    !STREQ(parent_type, "pciex")) {
			ddi_prop_free(parent_type);
			return;
		}

		ddi_prop_free(parent_type);
		parent_type = NULL;

		/* VGAEnable is set only for PCI-to-PCI bridges. */
		if (is_pci_bridge(pdevi) == B_FALSE)
			continue;

		if (pci_config_setup(pdevi, &ppci_conf) != DDI_SUCCESS)
			continue;

		data16 = pci_config_get16(ppci_conf, PCI_BCNF_BCNTRL);
		pci_config_teardown(&ppci_conf);

		if (!(data16 & PCI_BCNF_BCNTRL_VGA_ENABLE)) {
			softc->flags &= ~GFXP_FLAG_CONSOLE;
			return;
		}
	}
}

int
gfxp_vgatext_attach(dev_info_t *devi, ddi_attach_cmd_t cmd,
	gfxp_vgatext_softc_ptr_t ptr)
{
	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
	int	unit = ddi_get_instance(devi);
	int	error;
	char	*parent_type = NULL;
	int	reg_rnumber;
	off_t	reg_offset;
	off_t	mem_offset;
	char	*cons;
	int pci_pcie_bus = 0;
	int value;

	switch (cmd) {
	case DDI_ATTACH:
		break;

	case DDI_RESUME:
		vgatext_resume(softc);
		return (DDI_SUCCESS);

	default:
		return (DDI_FAILURE);
	}

	/* DDI_ATTACH */

	softc->devi = devi; /* Copy and init DEVI */

	softc->polledio.arg = (struct vis_polledio_arg *)softc;
	softc->polledio.display = vgatext_polled_display;
	softc->polledio.copy = vgatext_polled_copy;
	softc->polledio.cursor = vgatext_polled_cursor;

	mutex_init(&(softc->lock), NULL, MUTEX_DRIVER, NULL);

	error = ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_get_parent(devi),
	    DDI_PROP_DONTPASS, "device_type", &parent_type);
	if (error != DDI_SUCCESS) {
		cmn_err(CE_WARN, MYNAME ": can't determine parent type.");
		goto fail;
	}

	/* Not enable AGP and DRM by default */
	if (STREQ(parent_type, "isa") || STREQ(parent_type, "eisa")) {
		reg_rnumber = vgatext_get_isa_reg_index(devi, 1, VGA_REG_ADDR,
		    &reg_offset);
		if (reg_rnumber < 0) {
			cmn_err(CE_WARN,
			    MYNAME
			    ": can't find reg entry for registers");
			error = DDI_FAILURE;
			goto fail;
		}
		softc->fb_regno = vgatext_get_isa_reg_index(devi, 0,
		    VGA_MEM_ADDR, &mem_offset);
		if (softc->fb_regno < 0) {
			cmn_err(CE_WARN,
			    MYNAME
			    ": can't find reg entry for memory");
			error = DDI_FAILURE;
			goto fail;
		}
	} else if (STREQ(parent_type, "pci") || STREQ(parent_type, "pciex")) {
		pci_pcie_bus = 1;
		reg_rnumber = vgatext_get_pci_reg_index(devi,
		    PCI_REG_ADDR_M|PCI_REG_REL_M,
		    PCI_ADDR_IO|PCI_RELOCAT_B, VGA_REG_ADDR,
		    &reg_offset);
		if (reg_rnumber < 0) {
			cmn_err(CE_WARN,
			    MYNAME
			    ": can't find reg entry for registers");
			error = DDI_FAILURE;
			goto fail;
		}
		softc->fb_regno = vgatext_get_pci_reg_index(devi,
		    PCI_REG_ADDR_M|PCI_REG_REL_M,
		    PCI_ADDR_MEM32|PCI_RELOCAT_B, VGA_MEM_ADDR,
		    &mem_offset);
		if (softc->fb_regno < 0) {
			cmn_err(CE_WARN,
			    MYNAME
			    ": can't find reg entry for memory");
			error = DDI_FAILURE;
			goto fail;
		}
	} else {
		cmn_err(CE_WARN, MYNAME ": unknown parent type \"%s\".",
		    parent_type);
		error = DDI_FAILURE;
		goto fail;
	}
	ddi_prop_free(parent_type);
	parent_type = NULL;

	error = ddi_regs_map_setup(devi, reg_rnumber,
	    (caddr_t *)&softc->regs.addr, reg_offset, VGA_REG_SIZE,
	    &dev_attr, &softc->regs.handle);
	if (error != DDI_SUCCESS)
		goto fail;
	softc->regs.mapped = B_TRUE;

	softc->fb_size = VGA_MEM_SIZE;

	error = ddi_regs_map_setup(devi, softc->fb_regno,
	    (caddr_t *)&softc->fb.addr,
	    mem_offset, softc->fb_size,
	    &dev_attr, &softc->fb.handle);
	if (error != DDI_SUCCESS)
		goto fail;
	softc->fb.mapped = B_TRUE;

	if (ddi_get8(softc->regs.handle,
	    softc->regs.addr + VGA_MISC_R) & VGA_MISC_IOA_SEL)
		softc->text_base = (caddr_t)softc->fb.addr + VGA_COLOR_BASE;
	else
		softc->text_base = (caddr_t)softc->fb.addr + VGA_MONO_BASE;

	if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(),
	    DDI_PROP_DONTPASS, "console", &cons) == DDI_SUCCESS) {
		if (strcmp(cons, "graphics") == 0) {
			happyface_boot = 1;
			vgatext_silent = 1;
			softc->current_base = softc->shadow;
		} else {
			softc->current_base = softc->text_base;
		}
		ddi_prop_free(cons);
	} else {
		softc->current_base = softc->text_base;
	}

	error = ddi_prop_create(makedevice(DDI_MAJOR_T_UNKNOWN, unit),
	    devi, DDI_PROP_CANSLEEP, DDI_KERNEL_IOCTL, NULL, 0);
	if (error != DDI_SUCCESS)
		goto fail;

	gfxp_check_for_console(devi, softc, pci_pcie_bus);

	value = GFXP_IS_CONSOLE(softc) ? 1 : 0;
	if (ddi_prop_update_int(DDI_DEV_T_NONE, devi,
	    "primary-controller", value) != DDI_SUCCESS) {
		cmn_err(CE_WARN,
		    "Can not %s primary-controller "
		    "property for driver", value ? "set" : "clear");
	}

	/* only do this if not in graphics mode */
	if ((vgatext_silent == 0) && (GFXP_IS_CONSOLE(softc))) {
		vgatext_init(softc);
		vgatext_save_colormap(softc);
	}

	return (DDI_SUCCESS);

fail:
	if (parent_type != NULL)
		ddi_prop_free(parent_type);
	(void) gfxp_vgatext_detach(devi, DDI_DETACH, (void *)softc);
	return (error);
}

/*ARGSUSED*/
int
gfxp_vgatext_detach(dev_info_t *devi, ddi_detach_cmd_t cmd,
	gfxp_vgatext_softc_ptr_t ptr)
{
	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;

	(void) ddi_prop_remove(DDI_DEV_T_ANY, devi, "primary-controller");

	switch (cmd) {

	case DDI_SUSPEND:
		return (vgatext_suspend(softc));
		/* break; */
	case DDI_DETACH:
		if (softc->fb.mapped)
			ddi_regs_map_free(&softc->fb.handle);
		if (softc->regs.mapped)
			ddi_regs_map_free(&softc->regs.handle);
		mutex_destroy(&(softc->lock));
		return (DDI_SUCCESS);

	default:
		cmn_err(CE_WARN, "gfxp_vgatext_detach: unknown cmd 0x%x\n",
		    cmd);
		return (DDI_FAILURE);
	}
}

/*ARGSUSED*/
int
gfxp_vgatext_open(dev_t *devp, int flag, int otyp, cred_t *cred,
	gfxp_vgatext_softc_ptr_t ptr)
{
	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;

	if (softc == NULL || otyp == OTYP_BLK)
		return (ENXIO);

	return (0);
}

/*ARGSUSED*/
int
gfxp_vgatext_close(dev_t devp, int flag, int otyp, cred_t *cred,
	gfxp_vgatext_softc_ptr_t ptr)
{
	return (0);
}

static int
do_gfx_ioctl(int cmd, intptr_t data, int mode, struct vgatext_softc *softc)
{
	static char kernel_only[] =
	    "gfxp_vgatext_ioctl: %s is a kernel only ioctl";
	int err;
	int kd_mode;

	switch (cmd) {
	case KDSETMODE:
		return (vgatext_kdsetmode(softc, (int)data));

	case KDGETMODE:
		kd_mode = softc->mode;
		if (ddi_copyout(&kd_mode, (void *)data, sizeof (int), mode))
			return (EFAULT);
		break;

	case VIS_DEVINIT:

		if (!(mode & FKIOCTL)) {
			cmn_err(CE_CONT, kernel_only, "VIS_DEVINIT");
			return (ENXIO);
		}

		err = vgatext_devinit(softc, (struct vis_devinit *)data);
		if (err != 0) {
			cmn_err(CE_WARN,
			    "gfxp_vgatext_ioctl:  could not"
			    " initialize console");
			return (err);
		}
		break;

	case VIS_CONSCOPY:	/* move */
	{
		struct vis_conscopy pma;

		if (ddi_copyin((void *)data, &pma,
		    sizeof (struct vis_conscopy), mode))
			return (EFAULT);

		vgatext_cons_copy(softc, &pma);
		break;
	}

	case VIS_CONSDISPLAY:	/* display */
	{
		struct vis_consdisplay display_request;

		if (ddi_copyin((void *)data, &display_request,
		    sizeof (display_request), mode))
			return (EFAULT);

		vgatext_cons_display(softc, &display_request);
		break;
	}

	case VIS_CONSCURSOR:
	{
		struct vis_conscursor cursor_request;

		if (ddi_copyin((void *)data, &cursor_request,
		    sizeof (cursor_request), mode))
			return (EFAULT);

		vgatext_cons_cursor(softc, &cursor_request);

		if (cursor_request.action == VIS_GET_CURSOR &&
		    ddi_copyout(&cursor_request, (void *)data,
		    sizeof (cursor_request), mode))
			return (EFAULT);
		break;
	}

	case VIS_GETCMAP:
	case VIS_PUTCMAP:
	case FBIOPUTCMAP:
	case FBIOGETCMAP:
		/*
		 * At the moment, text mode is not considered to have
		 * a color map.
		 */
		return (EINVAL);

	case FBIOGATTR:
		if (copyout(&vgatext_attr, (void *)data,
		    sizeof (struct fbgattr)))
			return (EFAULT);
		break;

	case FBIOGTYPE:
		if (copyout(&vgatext_attr.fbtype, (void *)data,
		    sizeof (struct fbtype)))
			return (EFAULT);
		break;

	default:
		return (ENXIO);
	}
	return (0);
}

/*ARGSUSED*/
int
gfxp_vgatext_ioctl(
    dev_t dev,
    int cmd,
    intptr_t data,
    int mode,
    cred_t *cred,
    int *rval,
    gfxp_vgatext_softc_ptr_t ptr)
{
	int err;

	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;

	mutex_enter(&(softc->lock));
	err = do_gfx_ioctl(cmd, data, mode, softc);
	mutex_exit(&(softc->lock));

	return (err);
}

/*
 * vgatext_save_text
 * vgatext_restore_textmode
 * vgatext_suspend
 * vgatext_resume
 *
 * 	Routines to save and restore contents of the VGA text area
 * Mostly, this is to support Suspend/Resume operation for graphics
 * device drivers.  Here in the VGAtext common code, we simply squirrel
 * away the contents of the hardware's text area during Suspend and then
 * put it back during Resume
 */
static void
vgatext_save_text(struct vgatext_softc *softc)
{
	unsigned	i;

	for (i = 0; i < sizeof (softc->shadow); i++)
		softc->shadow[i] = softc->current_base[i];
}

static void
vgatext_restore_textmode(struct vgatext_softc *softc)
{
	unsigned	i;

	vgatext_init(softc);
	for (i = 0; i < sizeof (softc->shadow); i++) {
		softc->text_base[i] = softc->shadow[i];
	}
	if (softc->cursor.visible) {
		vgatext_set_cursor(softc,
		    softc->cursor.row, softc->cursor.col);
	}
	vgatext_restore_colormap(softc);
}

static int
vgatext_suspend(struct vgatext_softc *softc)
{
	switch (softc->mode) {
	case KD_TEXT:
		vgatext_save_text(softc);
		break;

	case KD_GRAPHICS:
		break;

	default:
		cmn_err(CE_WARN, MYNAME ": unknown mode in vgatext_suspend.");
		return (DDI_FAILURE);
	}
	return (DDI_SUCCESS);
}

static void
vgatext_resume(struct vgatext_softc *softc)
{

	switch (softc->mode) {
	case KD_TEXT:
		vgatext_restore_textmode(softc);
		break;

	case KD_GRAPHICS:

		/*
		 * Upon RESUME, the graphics device will always actually
		 * be in TEXT mode even though the Xorg server did not
		 * make that mode change itself (the suspend code did).
		 * We want first, therefore, to restore textmode
		 * operation fully, and then the Xorg server will
		 * do the rest to restore the device to its
		 * (hi resolution) graphics mode
		 */
		vgatext_restore_textmode(softc);
#if	defined(USE_BORDERS)
		vgatext_init_graphics(softc);
#endif
		break;
	default:
		cmn_err(CE_WARN, MYNAME ": unknown mode in vgatext_resume.");
		break;
	}
}

static void
vgatext_progressbar_stop()
{
	extern void progressbar_stop(void);

	if (vgatext_silent == 1) {
		vgatext_silent = 0;
		progressbar_stop();
	}
}

static void
vgatext_kdsettext(struct vgatext_softc *softc)
{
	int i;

	vgatext_init(softc);
	for (i = 0; i < sizeof (softc->shadow); i++) {
		softc->text_base[i] = softc->shadow[i];
	}
	softc->current_base = softc->text_base;
	if (softc->cursor.visible) {
		vgatext_set_cursor(softc,
		    softc->cursor.row, softc->cursor.col);
	}
	vgatext_restore_colormap(softc);
}

static void
vgatext_kdsetgraphics(struct vgatext_softc *softc)
{
	vgatext_progressbar_stop();
	vgatext_save_text(softc);
	softc->current_base = softc->shadow;
#if	defined(USE_BORDERS)
	vgatext_init_graphics(softc);
#endif
}

static int
vgatext_kdsetmode(struct vgatext_softc *softc, int mode)
{
	if ((mode == softc->mode) || (!GFXP_IS_CONSOLE(softc)))
		return (0);

	switch (mode) {
	case KD_TEXT:
		vgatext_kdsettext(softc);
		break;

	case KD_GRAPHICS:
		vgatext_kdsetgraphics(softc);
		break;

	case KD_RESETTEXT:
		/*
		 * In order to avoid racing with a starting X server,
		 * this needs to be a test and set that is performed in
		 * a single (softc->lock protected) ioctl into this driver.
		 */
		if (softc->mode == KD_TEXT && vgatext_silent == 1) {
			vgatext_progressbar_stop();
			vgatext_kdsettext(softc);
		}
		break;

	default:
		return (EINVAL);
	}

	softc->mode = mode;
	return (0);
}

/*ARGSUSED*/
int
gfxp_vgatext_devmap(dev_t dev, devmap_cookie_t dhp, offset_t off, size_t len,
		size_t *maplen, uint_t model, void *ptr)
{
	struct vgatext_softc *softc = (struct vgatext_softc *)ptr;
	int err;
	size_t length;


	if (softc == NULL) {
		cmn_err(CE_WARN, "vgatext: Can't find softstate");
		return (-1);
	}

	if (!(off >= VGA_MMAP_FB_BASE &&
	    off < VGA_MMAP_FB_BASE + softc->fb_size)) {
		cmn_err(CE_WARN, "vgatext: Can't map offset 0x%llx", off);
		return (-1);
	}

	if (off + len > VGA_MMAP_FB_BASE + softc->fb_size)
		length = VGA_MMAP_FB_BASE + softc->fb_size - off;
	else
		length = len;

	if ((err = devmap_devmem_setup(dhp, softc->devi,
	    NULL, softc->fb_regno, off - VGA_MMAP_FB_BASE,
	    length, PROT_ALL, 0, &dev_attr)) < 0) {
		return (err);
	}


	*maplen = length;
	return (0);
}


static int
vgatext_devinit(struct vgatext_softc *softc, struct vis_devinit *data)
{
	/* initialize console instance */
	data->version = VIS_CONS_REV;
	data->width = TEXT_COLS;
	data->height = TEXT_ROWS;
	data->linebytes = TEXT_COLS;
	data->depth = 4;
	data->mode = VIS_TEXT;
	data->polledio = &softc->polledio;

	return (0);
}

/*
 * display a string on the screen at (row, col)
 *	 assume it has been cropped to fit.
 */

static void
vgatext_cons_display(struct vgatext_softc *softc, struct vis_consdisplay *da)
{
	unsigned char	*string;
	int	i;
	unsigned char	attr;
	struct cgatext {
		unsigned char ch;
		unsigned char attr;
	};
	struct cgatext *addr;

	/*
	 * Sanity checks.  This is a last-ditch effort to avoid damage
	 * from brokenness or maliciousness above.
	 */
	if (da->row < 0 || da->row >= TEXT_ROWS ||
	    da->col < 0 || da->col >= TEXT_COLS ||
	    da->col + da->width > TEXT_COLS)
		return;

	/*
	 * To be fully general, we should copyin the data.  This is not
	 * really relevant for this text-only driver, but a graphical driver
	 * should support these ioctls from userland to enable simple
	 * system startup graphics.
	 */
	attr = (solaris_color_to_pc_color[da->bg_color & 0xf] << 4)
	    | solaris_color_to_pc_color[da->fg_color & 0xf];
	string = da->data;
	addr = (struct cgatext *)softc->current_base
	    +  (da->row * TEXT_COLS + da->col);
	for (i = 0; i < da->width; i++) {
		addr->ch = string[i];
		addr->attr = attr;
		addr++;
	}
}

static void
vgatext_polled_display(
	struct vis_polledio_arg *arg,
	struct vis_consdisplay *da)
{
	vgatext_cons_display((struct vgatext_softc *)arg, da);
}

/*
 * screen-to-screen copy
 */

static void
vgatext_cons_copy(struct vgatext_softc *softc, struct vis_conscopy *ma)
{
	unsigned short	*from;
	unsigned short	*to;
	int		cnt;
	screen_size_t chars_per_row;
	unsigned short	*to_row_start;
	unsigned short	*from_row_start;
	screen_size_t	rows_to_move;
	unsigned short	*base;

	/*
	 * Sanity checks.  Note that this is a last-ditch effort to avoid
	 * damage caused by broken-ness or maliciousness above.
	 */
	if (ma->s_col < 0 || ma->s_col >= TEXT_COLS ||
	    ma->s_row < 0 || ma->s_row >= TEXT_ROWS ||
	    ma->e_col < 0 || ma->e_col >= TEXT_COLS ||
	    ma->e_row < 0 || ma->e_row >= TEXT_ROWS ||
	    ma->t_col < 0 || ma->t_col >= TEXT_COLS ||
	    ma->t_row < 0 || ma->t_row >= TEXT_ROWS ||
	    ma->s_col > ma->e_col ||
	    ma->s_row > ma->e_row)
		return;

	/*
	 * Remember we're going to copy shorts because each
	 * character/attribute pair is 16 bits.
	 */
	chars_per_row = ma->e_col - ma->s_col + 1;
	rows_to_move = ma->e_row - ma->s_row + 1;

	/* More sanity checks. */
	if (ma->t_row + rows_to_move > TEXT_ROWS ||
	    ma->t_col + chars_per_row > TEXT_COLS)
		return;

	base = (unsigned short *)softc->current_base;

	to_row_start = base + ((ma->t_row * TEXT_COLS) + ma->t_col);
	from_row_start = base + ((ma->s_row * TEXT_COLS) + ma->s_col);

	if (to_row_start < from_row_start) {
		while (rows_to_move-- > 0) {
			to = to_row_start;
			from = from_row_start;
			to_row_start += TEXT_COLS;
			from_row_start += TEXT_COLS;
			for (cnt = chars_per_row; cnt-- > 0; )
				*to++ = *from++;
		}
	} else {
		/*
		 * Offset to the end of the region and copy backwards.
		 */
		cnt = rows_to_move * TEXT_COLS + chars_per_row;
		to_row_start += cnt;
		from_row_start += cnt;

		while (rows_to_move-- > 0) {
			to_row_start -= TEXT_COLS;
			from_row_start -= TEXT_COLS;
			to = to_row_start;
			from = from_row_start;
			for (cnt = chars_per_row; cnt-- > 0; )
				*--to = *--from;
		}
	}
}

static void
vgatext_polled_copy(
	struct vis_polledio_arg *arg,
	struct vis_conscopy *ca)
{
	vgatext_cons_copy((struct vgatext_softc *)arg, ca);
}


static void
vgatext_cons_cursor(struct vgatext_softc *softc, struct vis_conscursor *ca)
{
	if (vgatext_silent)
		return;

	switch (ca->action) {
	case VIS_HIDE_CURSOR:
		softc->cursor.visible = B_FALSE;
		if (softc->current_base == softc->text_base)
			vgatext_hide_cursor(softc);
		break;
	case VIS_DISPLAY_CURSOR:
		/*
		 * Sanity check.  This is a last-ditch effort to avoid
		 * damage from brokenness or maliciousness above.
		 */
		if (ca->col < 0 || ca->col >= TEXT_COLS ||
		    ca->row < 0 || ca->row >= TEXT_ROWS)
			return;

		softc->cursor.visible = B_TRUE;
		softc->cursor.col = ca->col;
		softc->cursor.row = ca->row;
		if (softc->current_base == softc->text_base)
			vgatext_set_cursor(softc, ca->row, ca->col);
		break;
	case VIS_GET_CURSOR:
		if (softc->current_base == softc->text_base) {
			vgatext_get_cursor(softc, &ca->row, &ca->col);
		}
		break;
	}
}

static void
vgatext_polled_cursor(
	struct vis_polledio_arg *arg,
	struct vis_conscursor *ca)
{
	vgatext_cons_cursor((struct vgatext_softc *)arg, ca);
}



/*ARGSUSED*/
static void
vgatext_hide_cursor(struct vgatext_softc *softc)
{
	/* Nothing at present */
}

static void
vgatext_set_cursor(struct vgatext_softc *softc, int row, int col)
{
	short	addr;

	if (vgatext_silent)
		return;

	addr = row * TEXT_COLS + col;

	vga_set_crtc(&softc->regs, VGA_CRTC_CLAH, addr >> 8);
	vga_set_crtc(&softc->regs, VGA_CRTC_CLAL, addr & 0xff);
}

static int vga_row, vga_col;

static void
vgatext_get_cursor(struct vgatext_softc *softc,
    screen_pos_t *row, screen_pos_t *col)
{
	short   addr;

	addr = (vga_get_crtc(&softc->regs, VGA_CRTC_CLAH) << 8) +
	    vga_get_crtc(&softc->regs, VGA_CRTC_CLAL);

	vga_row = *row = addr / TEXT_COLS;
	vga_col = *col = addr % TEXT_COLS;
}

/*
 * This code is experimental. It's only enabled if console is
 * set to graphics, a preliminary implementation of happyface boot.
 */
static void
vgatext_set_text(struct vgatext_softc *softc)
{
	int i;

	if (happyface_boot == 0)
		return;

	/* we are in graphics mode, set to text 80X25 mode */

	/* set misc registers */
	vga_set_reg(&softc->regs, VGA_MISC_W, VGA_MISC_TEXT);

	/* set sequencer registers */
	vga_set_seq(&softc->regs, VGA_SEQ_RST_SYN,
	    (vga_get_seq(&softc->regs, VGA_SEQ_RST_SYN) &
	    ~VGA_SEQ_RST_SYN_NO_SYNC_RESET));
	for (i = 1; i < NUM_SEQ_REG; i++) {
		vga_set_seq(&softc->regs, i, VGA_SEQ_TEXT[i]);
	}
	vga_set_seq(&softc->regs, VGA_SEQ_RST_SYN,
	    (vga_get_seq(&softc->regs, VGA_SEQ_RST_SYN) |
	    VGA_SEQ_RST_SYN_NO_ASYNC_RESET |
	    VGA_SEQ_RST_SYN_NO_SYNC_RESET));

	/* set crt controller registers */
	vga_set_crtc(&softc->regs, VGA_CRTC_VRE,
	    (vga_get_crtc(&softc->regs, VGA_CRTC_VRE) &
	    ~VGA_CRTC_VRE_LOCK));
	for (i = 0; i < NUM_CRTC_REG; i++) {
		vga_set_crtc(&softc->regs, i, VGA_CRTC_TEXT[i]);
	}

	/* set graphics controller registers */
	for (i = 0; i < NUM_GRC_REG; i++) {
		vga_set_grc(&softc->regs, i, VGA_GRC_TEXT[i]);
	}

	/* set attribute registers */
	for (i = 0; i < NUM_ATR_REG; i++) {
		vga_set_atr(&softc->regs, i, VGA_ATR_TEXT[i]);
	}

	/* set palette */
	for (i = 0; i < VGA_TEXT_CMAP_ENTRIES; i++) {
		vga_put_cmap(&softc->regs, i, VGA_TEXT_PALETTES[i][0] << 2,
		    VGA_TEXT_PALETTES[i][1] << 2,
		    VGA_TEXT_PALETTES[i][2] << 2);
	}
	for (i = VGA_TEXT_CMAP_ENTRIES; i < VGA8_CMAP_ENTRIES; i++) {
		vga_put_cmap(&softc->regs, i, 0, 0, 0);
	}

	vgatext_save_colormap(softc);
}

static void
vgatext_init(struct vgatext_softc *softc)
{
	unsigned char atr_mode;

	atr_mode = vga_get_atr(&softc->regs, VGA_ATR_MODE);
	if (atr_mode & VGA_ATR_MODE_GRAPH)
		vgatext_set_text(softc);
	atr_mode = vga_get_atr(&softc->regs, VGA_ATR_MODE);
	atr_mode &= ~VGA_ATR_MODE_BLINK;
	atr_mode &= ~VGA_ATR_MODE_9WIDE;
	vga_set_atr(&softc->regs, VGA_ATR_MODE, atr_mode);
#if	defined(USE_BORDERS)
	vga_set_atr(&softc->regs, VGA_ATR_BDR_CLR,
	    vga_get_atr(&softc->regs, VGA_BRIGHT_WHITE));
#else
	vga_set_atr(&softc->regs, VGA_ATR_BDR_CLR,
	    vga_get_atr(&softc->regs, VGA_BLACK));
#endif
	vgatext_setfont(softc);	/* need selectable font? */
}

#if	defined(USE_BORDERS)
static void
vgatext_init_graphics(struct vgatext_softc *softc)
{
	vga_set_atr(&softc->regs, VGA_ATR_BDR_CLR,
	    vga_get_atr(&softc->regs, VGA_BLACK));
}
#endif

static void
vgatext_setfont(struct vgatext_softc *softc)
{
	extern unsigned char *ENCODINGS[];
	unsigned char *from;
	unsigned char *to;
	int	i;
	int	j;
	int	bpc;

/*
 * The newboot code to use font plane 2 breaks NVIDIA
 * (and some ATI) behavior.  Revert back to the S10
 * code.
 */

	/*
	 * I'm embarassed to say that I don't know what these magic
	 * sequences do, other than at the high level of "set the
	 * memory window to allow font setup".  I stole them straight
	 * from "kd"...
	 */
	vga_set_seq(&softc->regs, 0x02, 0x04);
	vga_set_seq(&softc->regs, 0x04, 0x06);
	vga_set_grc(&softc->regs, 0x05, 0x00);
	vga_set_grc(&softc->regs, 0x06, 0x04);

	/*
	 * This assumes 8x16 characters, which yield the traditional 80x25
	 * screen.  It really should support other character heights.
	 */
	bpc = 16;
	for (i = 0; i < 256; i++) {
		from = ENCODINGS[i];
		to = (unsigned char *)softc->fb.addr + i * 0x20;
		for (j = 0; j < bpc; j++)
			*to++ = *from++;
	}

	vga_set_seq(&softc->regs, 0x02, 0x03);
	vga_set_seq(&softc->regs, 0x04, 0x02);
	vga_set_grc(&softc->regs, 0x04, 0x00);
	vga_set_grc(&softc->regs, 0x05, 0x10);
	vga_set_grc(&softc->regs, 0x06, 0x0e);

}

static void
vgatext_save_colormap(struct vgatext_softc *softc)
{
	int i;

	for (i = 0; i < VGA_ATR_NUM_PLT; i++) {
		softc->attrib_palette[i] = vga_get_atr(&softc->regs, i);
	}
	for (i = 0; i < VGA8_CMAP_ENTRIES; i++) {
		vga_get_cmap(&softc->regs, i,
		    &softc->colormap[i].red,
		    &softc->colormap[i].green,
		    &softc->colormap[i].blue);
	}
}

static void
vgatext_restore_colormap(struct vgatext_softc *softc)
{
	int i;

	for (i = 0; i < VGA_ATR_NUM_PLT; i++) {
		vga_set_atr(&softc->regs, i, softc->attrib_palette[i]);
	}
	for (i = 0; i < VGA8_CMAP_ENTRIES; i++) {
		vga_put_cmap(&softc->regs, i,
		    softc->colormap[i].red,
		    softc->colormap[i].green,
		    softc->colormap[i].blue);
	}
}

/*
 * search the entries of the "reg" property for one which has the desired
 * combination of phys_hi bits and contains the desired address.
 *
 * This version searches a PCI-style "reg" property.  It was prompted by
 * issues surrounding the presence or absence of an entry for the ROM:
 * (a) a transition problem with PowerPC Virtual Open Firmware
 * (b) uncertainty as to whether an entry will be included on a device
 *     with ROM support (and so an "active" ROM base address register),
 *     but no ROM actually installed.
 *
 * See the note below on vgatext_get_isa_reg_index for the reasons for
 * returning the offset.
 *
 * Note that this routine may not be fully general; it is intended for the
 * specific purpose of finding a couple of particular VGA reg entries and
 * may not be suitable for all reg-searching purposes.
 */
static int
vgatext_get_pci_reg_index(
	dev_info_t *const devi,
	unsigned long himask,
	unsigned long hival,
	unsigned long addr,
	off_t *offset)
{

	int			length, index;
	pci_regspec_t	*reg;

	if (ddi_getlongprop(DDI_DEV_T_ANY, devi, DDI_PROP_DONTPASS,
	    "reg", (caddr_t)&reg, &length) != DDI_PROP_SUCCESS) {
		return (-1);
	}

	for (index = 0; index < length / sizeof (pci_regspec_t); index++) {
		if ((reg[index].pci_phys_hi & himask) != hival)
			continue;
		if (reg[index].pci_size_hi != 0)
			continue;
		if (reg[index].pci_phys_mid != 0)
			continue;
		if (reg[index].pci_phys_low > addr)
			continue;
		if (reg[index].pci_phys_low + reg[index].pci_size_low <= addr)
			continue;

		*offset = addr - reg[index].pci_phys_low;
		kmem_free(reg, (size_t)length);
		return (index);
	}
	kmem_free(reg, (size_t)length);

	return (-1);
}

/*
 * search the entries of the "reg" property for one which has the desired
 * combination of phys_hi bits and contains the desired address.
 *
 * This version searches a ISA-style "reg" property.  It was prompted by
 * issues surrounding 8514/A support.  By IEEE 1275 compatibility conventions,
 * 8514/A registers should have been added after all standard VGA registers.
 * Unfortunately, the Solaris/Intel device configuration framework
 * (a) lists the 8514/A registers before the video memory, and then
 * (b) also sorts the entries so that I/O entries come before memory
 *     entries.
 *
 * It returns the "reg" index and offset into that register set.
 * The offset is needed because there exist (broken?) BIOSes that
 * report larger ranges enclosing the standard ranges.  One reports
 * 0x3bf for 0x21 instead of 0x3c0 for 0x20, for instance.  Using the
 * offset adjusts for this difference in the base of the register set.
 *
 * Note that this routine may not be fully general; it is intended for the
 * specific purpose of finding a couple of particular VGA reg entries and
 * may not be suitable for all reg-searching purposes.
 */
static int
vgatext_get_isa_reg_index(
	dev_info_t *const devi,
	unsigned long hival,
	unsigned long addr,
	off_t *offset)
{

	int		length, index;
	struct regspec	*reg;

	if (ddi_getlongprop(DDI_DEV_T_ANY, devi, DDI_PROP_DONTPASS,
	    "reg", (caddr_t)&reg, &length) != DDI_PROP_SUCCESS) {
		return (-1);
	}

	for (index = 0; index < length / sizeof (struct regspec); index++) {
		if (reg[index].regspec_bustype != hival)
			continue;
		if (reg[index].regspec_addr > addr)
			continue;
		if (reg[index].regspec_addr + reg[index].regspec_size <= addr)
			continue;

		*offset = addr - reg[index].regspec_addr;
		kmem_free(reg, (size_t)length);
		return (index);
	}
	kmem_free(reg, (size_t)length);

	return (-1);
}

/*
 * This vgatext function is used to return the fb, and reg pointers
 * and handles for peer graphics drivers.
 */

void
vgatext_return_pointers(struct vgatext_softc *softc,
			struct vgaregmap *fbs,
			struct vgaregmap *regss)
{

	fbs->addr	= softc->fb.addr;
	fbs->handle	= softc->fb.handle;
	fbs->mapped	= softc->fb.mapped;
	regss->addr	= softc->regs.addr;
	regss->handle	= softc->regs.handle;
	regss->mapped	= softc->regs.mapped;
}