/* $NetBSD: tgavar.h,v 1.8 2000/04/02 19:01:11 nathanw Exp $ */

/*
 * Copyright (c) 1995, 1996 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 * 
 * 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 the
 * rights to redistribute these changes.
 */

#include <dev/ic/ramdac.h>
#include <dev/pci/tgareg.h>
#include <dev/rcons/raster.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wscons_raster.h>

struct tga_devconfig;
struct fbcmap;
struct fbcursor;
struct fbcurpos;

struct tga_conf {
        char            *tgac_name;                /* name for this board type */

        struct ramdac_funcs *(*ramdac_funcs) __P((void));

        int            tgac_phys_depth;        /* physical frame buffer depth */
        vsize_t   tgac_cspace_size;        /* core space size */
        vsize_t   tgac_vvbr_units;        /* what '1' in the VVBR means */

        int            tgac_ndbuf;                /* number of display buffers */
        vaddr_t tgac_dbuf[2];        /* display buffer offsets/addresses */
        vsize_t   tgac_dbufsz[2];        /* display buffer sizes */

        int            tgac_nbbuf;                /* number of display buffers */
        vaddr_t tgac_bbuf[2];        /* back buffer offsets/addresses */
        vsize_t   tgac_bbufsz[2];        /* back buffer sizes */
};

struct tga_devconfig {
        bus_space_tag_t dc_memt;
	pci_chipset_tag_t dc_pc;
        pcitag_t            dc_pcitag;        /* PCI tag */
        bus_addr_t         dc_pcipaddr;        /* PCI phys addr. */

	tga_reg_t   *dc_regs;                /* registers; XXX: need aliases */
        int            dc_tga_type;        /* the device type; see below */
        int            dc_tga2;                /* True if it is a TGA2 */
        const struct tga_conf *dc_tgaconf; /* device buffer configuration */

        struct ramdac_funcs
                    *dc_ramdac_funcs;        /* The RAMDAC functions */
        struct ramdac_cookie
                    *dc_ramdac_cookie;        /* the RAMDAC type; see above */

        vaddr_t dc_vaddr;                /* memory space virtual base address */
        paddr_t dc_paddr;                /* memory space physical base address */

        int            dc_wid;                /* width of frame buffer */
        int            dc_ht;                /* height of frame buffer */
        int            dc_rowbytes;        /* bytes in a FB scan line */

        vaddr_t dc_videobase;        /* base of flat frame buffer */

        struct raster        dc_raster;        /* raster description */
        struct rcons        dc_rcons;        /* raster blitter control info */

        int            dc_blanked;                /* currently had video disabled */
        void            *dc_ramdac_private; /* RAMDAC private storage */

        void            (*dc_ramdac_intr) __P((void *));
        int                dc_intrenabled; /* can we depend on interrupts yet? */
};
        
struct tga_softc {
        struct        device sc_dev;

        struct        tga_devconfig *sc_dc;        /* device configuration */
        void        *sc_intr;                /* interrupt handler info */
        /* XXX should record intr fns/arg */

        int nscreens;
};

#define TGA_TYPE_T8_01                0        /* 8bpp, 1MB */
#define TGA_TYPE_T8_02                1        /* 8bpp, 2MB */
#define TGA_TYPE_T8_22                2        /* 8bpp, 4MB */
#define TGA_TYPE_T8_44                3        /* 8bpp, 8MB */
#define TGA_TYPE_T32_04                4        /* 32bpp, 4MB */
#define TGA_TYPE_T32_08                5        /* 32bpp, 8MB */
#define TGA_TYPE_T32_88                6        /* 32bpp, 16MB */
#define TGA_TYPE_UNKNOWN        7        /* unknown */

#define DEVICE_IS_TGA(class, id)                                        \
            (((PCI_VENDOR(id) == PCI_VENDOR_DEC &&                        \
               PCI_PRODUCT(id) == PCI_PRODUCT_DEC_21030) ||                \
               PCI_PRODUCT(id) == PCI_PRODUCT_DEC_PBXGB) ? 10 : 0)

int tga_cnattach __P((bus_space_tag_t, bus_space_tag_t, pci_chipset_tag_t,
                      int, int, int));

int     tga_identify __P((tga_reg_t *));
const struct tga_conf *tga_getconf __P((int));

int     tga_builtin_set_cursor __P((struct tga_devconfig *,
            struct wsdisplay_cursor *));
int     tga_builtin_get_cursor __P((struct tga_devconfig *,
            struct wsdisplay_cursor *));
int     tga_builtin_set_curpos __P((struct tga_devconfig *,
            struct wsdisplay_curpos *));
int     tga_builtin_get_curpos __P((struct tga_devconfig *,
            struct wsdisplay_curpos *));
int     tga_builtin_get_curmax __P((struct tga_devconfig *,
            struct wsdisplay_curpos *));