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linux/drivers/video/fbdev/neofb.c
Thomas Zimmermann eb9d5c19dc fbdev/neofb: Initialize fb_ops to fbdev I/O-memory helpers 
Initialize the instance of struct fb_ops with fbdev initializer
macros for framebuffers in I/O address space. Set the read/write,
draw and mmap callbacks to the correct implementation and avoid
implicit defaults. Also select the necessary I/O helpers in Kconfig.

Fbdev drivers sometimes rely on the callbacks being NULL for a
default implementation to be invoked; hence requiring the I/O
helpers to be built in any case. Setting all callbacks in all
drivers explicitly will allow to make the I/O helpers optional.
This benefits systems that do not use these functions.

No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230927074722.6197-24-tzimmermann@suse.de
2023-10-19 12:55:48 +02:00

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/*
* linux/drivers/video/neofb.c -- NeoMagic Framebuffer Driver
*
* Copyright (c) 2001-2002 Denis Oliver Kropp <dok@directfb.org>
*
*
* Card specific code is based on XFree86's neomagic driver.
* Framebuffer framework code is based on code of cyber2000fb.
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
* archive for more details.
*
*
* 0.4.1
* - Cosmetic changes (dok)
*
* 0.4
* - Toshiba Libretto support, allow modes larger than LCD size if
* LCD is disabled, keep BIOS settings if internal/external display
* haven't been enabled explicitly
* (Thomas J. Moore <dark@mama.indstate.edu>)
*
* 0.3.3
* - Porting over to new fbdev api. (jsimmons)
*
* 0.3.2
* - got rid of all floating point (dok)
*
* 0.3.1
* - added module license (dok)
*
* 0.3
* - hardware accelerated clear and move for 2200 and above (dok)
* - maximum allowed dotclock is handled now (dok)
*
* 0.2.1
* - correct panning after X usage (dok)
* - added module and kernel parameters (dok)
* - no stretching if external display is enabled (dok)
*
* 0.2
* - initial version (dok)
*
*
* TODO
* - ioctl for internal/external switching
* - blanking
* - 32bit depth support, maybe impossible
* - disable pan-on-sync, need specs
*
* BUGS
* - white margin on bootup like with tdfxfb (colormap problem?)
*
*/
#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/pci.h>
#include <linux/init.h>
#ifdef CONFIG_TOSHIBA
#include <linux/toshiba.h>
#endif
#include <asm/io.h>
#include <asm/irq.h>
#include <video/vga.h>
#include <video/neomagic.h>
#define NEOFB_VERSION "0.4.2"
/* --------------------------------------------------------------------- */
static bool internal;
static bool external;
static bool libretto;
static bool nostretch;
static bool nopciburst;
static char *mode_option = NULL;
#ifdef MODULE
MODULE_AUTHOR("(c) 2001-2002 Denis Oliver Kropp <dok@convergence.de>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("FBDev driver for NeoMagic PCI Chips");
module_param(internal, bool, 0);
MODULE_PARM_DESC(internal, "Enable output on internal LCD Display.");
module_param(external, bool, 0);
MODULE_PARM_DESC(external, "Enable output on external CRT.");
module_param(libretto, bool, 0);
MODULE_PARM_DESC(libretto, "Force Libretto 100/110 800x480 LCD.");
module_param(nostretch, bool, 0);
MODULE_PARM_DESC(nostretch,
"Disable stretching of modes smaller than LCD.");
module_param(nopciburst, bool, 0);
MODULE_PARM_DESC(nopciburst, "Disable PCI burst mode.");
module_param(mode_option, charp, 0);
MODULE_PARM_DESC(mode_option, "Preferred video mode ('640x480-8@60', etc)");
#endif
/* --------------------------------------------------------------------- */
static biosMode bios8[] = {
{320, 240, 0x40},
{300, 400, 0x42},
{640, 400, 0x20},
{640, 480, 0x21},
{800, 600, 0x23},
{1024, 768, 0x25},
};
static biosMode bios16[] = {
{320, 200, 0x2e},
{320, 240, 0x41},
{300, 400, 0x43},
{640, 480, 0x31},
{800, 600, 0x34},
{1024, 768, 0x37},
};
static biosMode bios24[] = {
{640, 480, 0x32},
{800, 600, 0x35},
{1024, 768, 0x38}
};
#ifdef NO_32BIT_SUPPORT_YET
/* FIXME: guessed values, wrong */
static biosMode bios32[] = {
{640, 480, 0x33},
{800, 600, 0x36},
{1024, 768, 0x39}
};
#endif
static inline void write_le32(int regindex, u32 val, const struct neofb_par *par)
{
writel(val, par->neo2200 + par->cursorOff + regindex);
}
static int neoFindMode(int xres, int yres, int depth)
{
int xres_s;
int i, size;
biosMode *mode;
switch (depth) {
case 8:
size = ARRAY_SIZE(bios8);
mode = bios8;
break;
case 16:
size = ARRAY_SIZE(bios16);
mode = bios16;
break;
case 24:
size = ARRAY_SIZE(bios24);
mode = bios24;
break;
#ifdef NO_32BIT_SUPPORT_YET
case 32:
size = ARRAY_SIZE(bios32);
mode = bios32;
break;
#endif
default:
return 0;
}
for (i = 0; i < size; i++) {
if (xres <= mode[i].x_res) {
xres_s = mode[i].x_res;
for (; i < size; i++) {
if (mode[i].x_res != xres_s)
return mode[i - 1].mode;
if (yres <= mode[i].y_res)
return mode[i].mode;
}
}
}
return mode[size - 1].mode;
}
/*
* neoCalcVCLK --
*
* Determine the closest clock frequency to the one requested.
*/
#define MAX_N 127
#define MAX_D 31
#define MAX_F 1
static void neoCalcVCLK(const struct fb_info *info,
struct neofb_par *par, long freq)
{
int n, d, f;
int n_best = 0, d_best = 0, f_best = 0;
long f_best_diff = 0x7ffff;
for (f = 0; f <= MAX_F; f++)
for (d = 0; d <= MAX_D; d++)
for (n = 0; n <= MAX_N; n++) {
long f_out;
long f_diff;
f_out = ((14318 * (n + 1)) / (d + 1)) >> f;
f_diff = abs(f_out - freq);
if (f_diff <= f_best_diff) {
f_best_diff = f_diff;
n_best = n;
d_best = d;
f_best = f;
}
if (f_out > freq)
break;
}
if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
/* NOT_DONE: We are trying the full range of the 2200 clock.
We should be able to try n up to 2047 */
par->VCLK3NumeratorLow = n_best;
par->VCLK3NumeratorHigh = (f_best << 7);
} else
par->VCLK3NumeratorLow = n_best | (f_best << 7);
par->VCLK3Denominator = d_best;
#ifdef NEOFB_DEBUG
printk(KERN_DEBUG "neoVCLK: f:%ld NumLow=%d NumHi=%d Den=%d Df=%ld\n",
freq,
par->VCLK3NumeratorLow,
par->VCLK3NumeratorHigh,
par->VCLK3Denominator, f_best_diff);
#endif
}
/*
* vgaHWInit --
* Handle the initialization, etc. of a screen.
* Return FALSE on failure.
*/
static int vgaHWInit(const struct fb_var_screeninfo *var,
struct neofb_par *par)
{
int hsync_end = var->xres + var->right_margin + var->hsync_len;
int htotal = (hsync_end + var->left_margin) >> 3;
int vsync_start = var->yres + var->lower_margin;
int vsync_end = vsync_start + var->vsync_len;
int vtotal = vsync_end + var->upper_margin;
par->MiscOutReg = 0x23;
if (!(var->sync & FB_SYNC_HOR_HIGH_ACT))
par->MiscOutReg |= 0x40;
if (!(var->sync & FB_SYNC_VERT_HIGH_ACT))
par->MiscOutReg |= 0x80;
/*
* Time Sequencer
*/
par->Sequencer[0] = 0x00;
par->Sequencer[1] = 0x01;
par->Sequencer[2] = 0x0F;
par->Sequencer[3] = 0x00; /* Font select */
par->Sequencer[4] = 0x0E; /* Misc */
/*
* CRTC Controller
*/
par->CRTC[0] = htotal - 5;
par->CRTC[1] = (var->xres >> 3) - 1;
par->CRTC[2] = (var->xres >> 3) - 1;
par->CRTC[3] = ((htotal - 1) & 0x1F) | 0x80;
par->CRTC[4] = ((var->xres + var->right_margin) >> 3);
par->CRTC[5] = (((htotal - 1) & 0x20) << 2)
| (((hsync_end >> 3)) & 0x1F);
par->CRTC[6] = (vtotal - 2) & 0xFF;
par->CRTC[7] = (((vtotal - 2) & 0x100) >> 8)
| (((var->yres - 1) & 0x100) >> 7)
| ((vsync_start & 0x100) >> 6)
| (((var->yres - 1) & 0x100) >> 5)
| 0x10 | (((vtotal - 2) & 0x200) >> 4)
| (((var->yres - 1) & 0x200) >> 3)
| ((vsync_start & 0x200) >> 2);
par->CRTC[8] = 0x00;
par->CRTC[9] = (((var->yres - 1) & 0x200) >> 4) | 0x40;
if (var->vmode & FB_VMODE_DOUBLE)
par->CRTC[9] |= 0x80;
par->CRTC[10] = 0x00;
par->CRTC[11] = 0x00;
par->CRTC[12] = 0x00;
par->CRTC[13] = 0x00;
par->CRTC[14] = 0x00;
par->CRTC[15] = 0x00;
par->CRTC[16] = vsync_start & 0xFF;
par->CRTC[17] = (vsync_end & 0x0F) | 0x20;
par->CRTC[18] = (var->yres - 1) & 0xFF;
par->CRTC[19] = var->xres_virtual >> 4;
par->CRTC[20] = 0x00;
par->CRTC[21] = (var->yres - 1) & 0xFF;
par->CRTC[22] = (vtotal - 1) & 0xFF;
par->CRTC[23] = 0xC3;
par->CRTC[24] = 0xFF;
/*
* are these unnecessary?
* vgaHWHBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN | KGA_ENABLE_ON_ZERO);
* vgaHWVBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN | KGA_ENABLE_ON_ZERO);
*/
/*
* Graphics Display Controller
*/
par->Graphics[0] = 0x00;
par->Graphics[1] = 0x00;
par->Graphics[2] = 0x00;
par->Graphics[3] = 0x00;
par->Graphics[4] = 0x00;
par->Graphics[5] = 0x40;
par->Graphics[6] = 0x05; /* only map 64k VGA memory !!!! */
par->Graphics[7] = 0x0F;
par->Graphics[8] = 0xFF;
par->Attribute[0] = 0x00; /* standard colormap translation */
par->Attribute[1] = 0x01;
par->Attribute[2] = 0x02;
par->Attribute[3] = 0x03;
par->Attribute[4] = 0x04;
par->Attribute[5] = 0x05;
par->Attribute[6] = 0x06;
par->Attribute[7] = 0x07;
par->Attribute[8] = 0x08;
par->Attribute[9] = 0x09;
par->Attribute[10] = 0x0A;
par->Attribute[11] = 0x0B;
par->Attribute[12] = 0x0C;
par->Attribute[13] = 0x0D;
par->Attribute[14] = 0x0E;
par->Attribute[15] = 0x0F;
par->Attribute[16] = 0x41;
par->Attribute[17] = 0xFF;
par->Attribute[18] = 0x0F;
par->Attribute[19] = 0x00;
par->Attribute[20] = 0x00;
return 0;
}
static void vgaHWLock(struct vgastate *state)
{
/* Protect CRTC[0-7] */
vga_wcrt(state->vgabase, 0x11, vga_rcrt(state->vgabase, 0x11) | 0x80);
}
static void vgaHWUnlock(void)
{
/* Unprotect CRTC[0-7] */
vga_wcrt(NULL, 0x11, vga_rcrt(NULL, 0x11) & ~0x80);
}
static void neoLock(struct vgastate *state)
{
vga_wgfx(state->vgabase, 0x09, 0x00);
vgaHWLock(state);
}
static void neoUnlock(void)
{
vgaHWUnlock();
vga_wgfx(NULL, 0x09, 0x26);
}
/*
* VGA Palette management
*/
static int paletteEnabled = 0;
static inline void VGAenablePalette(void)
{
vga_r(NULL, VGA_IS1_RC);
vga_w(NULL, VGA_ATT_W, 0x00);
paletteEnabled = 1;
}
static inline void VGAdisablePalette(void)
{
vga_r(NULL, VGA_IS1_RC);
vga_w(NULL, VGA_ATT_W, 0x20);
paletteEnabled = 0;
}
static inline void VGAwATTR(u8 index, u8 value)
{
if (paletteEnabled)
index &= ~0x20;
else
index |= 0x20;
vga_r(NULL, VGA_IS1_RC);
vga_wattr(NULL, index, value);
}
static void vgaHWProtect(int on)
{
unsigned char tmp;
tmp = vga_rseq(NULL, 0x01);
if (on) {
/*
* Turn off screen and disable sequencer.
*/
vga_wseq(NULL, 0x00, 0x01); /* Synchronous Reset */
vga_wseq(NULL, 0x01, tmp | 0x20); /* disable the display */
VGAenablePalette();
} else {
/*
* Reenable sequencer, then turn on screen.
*/
vga_wseq(NULL, 0x01, tmp & ~0x20); /* reenable display */
vga_wseq(NULL, 0x00, 0x03); /* clear synchronousreset */
VGAdisablePalette();
}
}
static void vgaHWRestore(const struct fb_info *info,
const struct neofb_par *par)
{
int i;
vga_w(NULL, VGA_MIS_W, par->MiscOutReg);
for (i = 1; i < 5; i++)
vga_wseq(NULL, i, par->Sequencer[i]);
/* Ensure CRTC registers 0-7 are unlocked by clearing bit 7 or CRTC[17] */
vga_wcrt(NULL, 17, par->CRTC[17] & ~0x80);
for (i = 0; i < 25; i++)
vga_wcrt(NULL, i, par->CRTC[i]);
for (i = 0; i < 9; i++)
vga_wgfx(NULL, i, par->Graphics[i]);
VGAenablePalette();
for (i = 0; i < 21; i++)
VGAwATTR(i, par->Attribute[i]);
VGAdisablePalette();
}
/* -------------------- Hardware specific routines ------------------------- */
/*
* Hardware Acceleration for Neo2200+
*/
static inline int neo2200_sync(struct fb_info *info)
{
struct neofb_par *par = info->par;
while (readl(&par->neo2200->bltStat) & 1)
cpu_relax();
return 0;
}
static inline void neo2200_wait_fifo(struct fb_info *info,
int requested_fifo_space)
{
// ndev->neo.waitfifo_calls++;
// ndev->neo.waitfifo_sum += requested_fifo_space;
/* FIXME: does not work
if (neo_fifo_space < requested_fifo_space)
{
neo_fifo_waitcycles++;
while (1)
{
neo_fifo_space = (neo2200->bltStat >> 8);
if (neo_fifo_space >= requested_fifo_space)
break;
}
}
else
{
neo_fifo_cache_hits++;
}
neo_fifo_space -= requested_fifo_space;
*/
neo2200_sync(info);
}
static inline void neo2200_accel_init(struct fb_info *info,
struct fb_var_screeninfo *var)
{
struct neofb_par *par = info->par;
Neo2200 __iomem *neo2200 = par->neo2200;
u32 bltMod, pitch;
neo2200_sync(info);
switch (var->bits_per_pixel) {
case 8:
bltMod = NEO_MODE1_DEPTH8;
pitch = var->xres_virtual;
break;
case 15:
case 16:
bltMod = NEO_MODE1_DEPTH16;
pitch = var->xres_virtual * 2;
break;
case 24:
bltMod = NEO_MODE1_DEPTH24;
pitch = var->xres_virtual * 3;
break;
default:
printk(KERN_ERR
"neofb: neo2200_accel_init: unexpected bits per pixel!\n");
return;
}
writel(bltMod << 16, &neo2200->bltStat);
writel((pitch << 16) | pitch, &neo2200->pitch);
}
/* --------------------------------------------------------------------- */
static int
neofb_open(struct fb_info *info, int user)
{
struct neofb_par *par = info->par;
if (!par->ref_count) {
memset(&par->state, 0, sizeof(struct vgastate));
par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS;
save_vga(&par->state);
}
par->ref_count++;
return 0;
}
static int
neofb_release(struct fb_info *info, int user)
{
struct neofb_par *par = info->par;
if (!par->ref_count)
return -EINVAL;
if (par->ref_count == 1) {
restore_vga(&par->state);
}
par->ref_count--;
return 0;
}
static int
neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct neofb_par *par = info->par;
int memlen, vramlen;
int mode_ok = 0;
DBG("neofb_check_var");
if (!var->pixclock || PICOS2KHZ(var->pixclock) > par->maxClock)
return -EINVAL;
/* Is the mode larger than the LCD panel? */
if (par->internal_display &&
((var->xres > par->NeoPanelWidth) ||
(var->yres > par->NeoPanelHeight))) {
printk(KERN_INFO
"Mode (%dx%d) larger than the LCD panel (%dx%d)\n",
var->xres, var->yres, par->NeoPanelWidth,
par->NeoPanelHeight);
return -EINVAL;
}
/* Is the mode one of the acceptable sizes? */
if (!par->internal_display)
mode_ok = 1;
else {
switch (var->xres) {
case 1280:
if (var->yres == 1024)
mode_ok = 1;
break;
case 1024:
if (var->yres == 768)
mode_ok = 1;
break;
case 800:
if (var->yres == (par->libretto ? 480 : 600))
mode_ok = 1;
break;
case 640:
if (var->yres == 480)
mode_ok = 1;
break;
}
}
if (!mode_ok) {
printk(KERN_INFO
"Mode (%dx%d) won't display properly on LCD\n",
var->xres, var->yres);
return -EINVAL;
}
var->red.msb_right = 0;
var->green.msb_right = 0;
var->blue.msb_right = 0;
var->transp.msb_right = 0;
var->transp.offset = 0;
var->transp.length = 0;
switch (var->bits_per_pixel) {
case 8: /* PSEUDOCOLOUR, 256 */
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 0;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
break;
case 16: /* DIRECTCOLOUR, 64k */
var->red.offset = 11;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 6;
var->blue.offset = 0;
var->blue.length = 5;
break;
case 24: /* TRUECOLOUR, 16m */
var->red.offset = 16;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
break;
#ifdef NO_32BIT_SUPPORT_YET
case 32: /* TRUECOLOUR, 16m */
var->transp.offset = 24;
var->transp.length = 8;
var->red.offset = 16;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
break;
#endif
default:
printk(KERN_WARNING "neofb: no support for %dbpp\n",
var->bits_per_pixel);
return -EINVAL;
}
vramlen = info->fix.smem_len;
if (vramlen > 4 * 1024 * 1024)
vramlen = 4 * 1024 * 1024;
if (var->xres_virtual < var->xres)
var->xres_virtual = var->xres;
memlen = var->xres_virtual * var->bits_per_pixel * var->yres_virtual >> 3;
if (memlen > vramlen) {
var->yres_virtual = vramlen * 8 / (var->xres_virtual *
var->bits_per_pixel);
memlen = var->xres_virtual * var->bits_per_pixel *
var->yres_virtual / 8;
}
/* we must round yres/xres down, we already rounded y/xres_virtual up
if it was possible. We should return -EINVAL, but I disagree */
if (var->yres_virtual < var->yres)
var->yres = var->yres_virtual;
if (var->xoffset + var->xres > var->xres_virtual)
var->xoffset = var->xres_virtual - var->xres;
if (var->yoffset + var->yres > var->yres_virtual)
var->yoffset = var->yres_virtual - var->yres;
var->nonstd = 0;
var->height = -1;
var->width = -1;
if (var->bits_per_pixel >= 24 || !par->neo2200)
var->accel_flags &= ~FB_ACCELF_TEXT;
return 0;
}
static int neofb_set_par(struct fb_info *info)
{
struct neofb_par *par = info->par;
unsigned char temp;
int i, clock_hi = 0;
int lcd_stretch;
int hoffset, voffset;
int vsync_start, vtotal;
DBG("neofb_set_par");
neoUnlock();
vgaHWProtect(1); /* Blank the screen */
vsync_start = info->var.yres + info->var.lower_margin;
vtotal = vsync_start + info->var.vsync_len + info->var.upper_margin;
/*
* This will allocate the datastructure and initialize all of the
* generic VGA registers.
*/
if (vgaHWInit(&info->var, par))
return -EINVAL;
/*
* The default value assigned by vgaHW.c is 0x41, but this does
* not work for NeoMagic.
*/
par->Attribute[16] = 0x01;
switch (info->var.bits_per_pixel) {
case 8:
par->CRTC[0x13] = info->var.xres_virtual >> 3;
par->ExtCRTOffset = info->var.xres_virtual >> 11;
par->ExtColorModeSelect = 0x11;
break;
case 16:
par->CRTC[0x13] = info->var.xres_virtual >> 2;
par->ExtCRTOffset = info->var.xres_virtual >> 10;
par->ExtColorModeSelect = 0x13;
break;
case 24:
par->CRTC[0x13] = (info->var.xres_virtual * 3) >> 3;
par->ExtCRTOffset = (info->var.xres_virtual * 3) >> 11;
par->ExtColorModeSelect = 0x14;
break;
#ifdef NO_32BIT_SUPPORT_YET
case 32: /* FIXME: guessed values */
par->CRTC[0x13] = info->var.xres_virtual >> 1;
par->ExtCRTOffset = info->var.xres_virtual >> 9;
par->ExtColorModeSelect = 0x15;
break;
#endif
default:
break;
}
par->ExtCRTDispAddr = 0x10;
/* Vertical Extension */
par->VerticalExt = (((vtotal - 2) & 0x400) >> 10)
| (((info->var.yres - 1) & 0x400) >> 9)
| (((vsync_start) & 0x400) >> 8)
| (((vsync_start) & 0x400) >> 7);
/* Fast write bursts on unless disabled. */
if (par->pci_burst)
par->SysIfaceCntl1 = 0x30;
else
par->SysIfaceCntl1 = 0x00;
par->SysIfaceCntl2 = 0xc0; /* VESA Bios sets this to 0x80! */
/* Initialize: by default, we want display config register to be read */
par->PanelDispCntlRegRead = 1;
/* Enable any user specified display devices. */
par->PanelDispCntlReg1 = 0x00;
if (par->internal_display)
par->PanelDispCntlReg1 |= 0x02;
if (par->external_display)
par->PanelDispCntlReg1 |= 0x01;
/* If the user did not specify any display devices, then... */
if (par->PanelDispCntlReg1 == 0x00) {
/* Default to internal (i.e., LCD) only. */
par->PanelDispCntlReg1 = vga_rgfx(NULL, 0x20) & 0x03;
}
/* If we are using a fixed mode, then tell the chip we are. */
switch (info->var.xres) {
case 1280:
par->PanelDispCntlReg1 |= 0x60;
break;
case 1024:
par->PanelDispCntlReg1 |= 0x40;
break;
case 800:
par->PanelDispCntlReg1 |= 0x20;
break;
case 640:
default:
break;
}
/* Setup shadow register locking. */
switch (par->PanelDispCntlReg1 & 0x03) {
case 0x01: /* External CRT only mode: */
par->GeneralLockReg = 0x00;
/* We need to program the VCLK for external display only mode. */
par->ProgramVCLK = 1;
break;
case 0x02: /* Internal LCD only mode: */
case 0x03: /* Simultaneous internal/external (LCD/CRT) mode: */
par->GeneralLockReg = 0x01;
/* Don't program the VCLK when using the LCD. */
par->ProgramVCLK = 0;
break;
}
/*
* If the screen is to be stretched, turn on stretching for the
* various modes.
*
* OPTION_LCD_STRETCH means stretching should be turned off!
*/
par->PanelDispCntlReg2 = 0x00;
par->PanelDispCntlReg3 = 0x00;
if (par->lcd_stretch && (par->PanelDispCntlReg1 == 0x02) && /* LCD only */
(info->var.xres != par->NeoPanelWidth)) {
switch (info->var.xres) {
case 320: /* Needs testing. KEM -- 24 May 98 */
case 400: /* Needs testing. KEM -- 24 May 98 */
case 640:
case 800:
case 1024:
lcd_stretch = 1;
par->PanelDispCntlReg2 |= 0xC6;
break;
default:
lcd_stretch = 0;
/* No stretching in these modes. */
}
} else
lcd_stretch = 0;
/*
* If the screen is to be centerd, turn on the centering for the
* various modes.
*/
par->PanelVertCenterReg1 = 0x00;
par->PanelVertCenterReg2 = 0x00;
par->PanelVertCenterReg3 = 0x00;
par->PanelVertCenterReg4 = 0x00;
par->PanelVertCenterReg5 = 0x00;
par->PanelHorizCenterReg1 = 0x00;
par->PanelHorizCenterReg2 = 0x00;
par->PanelHorizCenterReg3 = 0x00;
par->PanelHorizCenterReg4 = 0x00;
par->PanelHorizCenterReg5 = 0x00;
if (par->PanelDispCntlReg1 & 0x02) {
if (info->var.xres == par->NeoPanelWidth) {
/*
* No centering required when the requested display width
* equals the panel width.
*/
} else {
par->PanelDispCntlReg2 |= 0x01;
par->PanelDispCntlReg3 |= 0x10;
/* Calculate the horizontal and vertical offsets. */
if (!lcd_stretch) {
hoffset =
((par->NeoPanelWidth -
info->var.xres) >> 4) - 1;
voffset =
((par->NeoPanelHeight -
info->var.yres) >> 1) - 2;
} else {
/* Stretched modes cannot be centered. */
hoffset = 0;
voffset = 0;
}
switch (info->var.xres) {
case 320: /* Needs testing. KEM -- 24 May 98 */
par->PanelHorizCenterReg3 = hoffset;
par->PanelVertCenterReg2 = voffset;
break;
case 400: /* Needs testing. KEM -- 24 May 98 */
par->PanelHorizCenterReg4 = hoffset;
par->PanelVertCenterReg1 = voffset;
break;
case 640:
par->PanelHorizCenterReg1 = hoffset;
par->PanelVertCenterReg3 = voffset;
break;
case 800:
par->PanelHorizCenterReg2 = hoffset;
par->PanelVertCenterReg4 = voffset;
break;
case 1024:
par->PanelHorizCenterReg5 = hoffset;
par->PanelVertCenterReg5 = voffset;
break;
case 1280:
default:
/* No centering in these modes. */
break;
}
}
}
par->biosMode =
neoFindMode(info->var.xres, info->var.yres,
info->var.bits_per_pixel);
/*
* Calculate the VCLK that most closely matches the requested dot
* clock.
*/
neoCalcVCLK(info, par, PICOS2KHZ(info->var.pixclock));
/* Since we program the clocks ourselves, always use VCLK3. */
par->MiscOutReg |= 0x0C;
/* alread unlocked above */
/* BOGUS vga_wgfx(NULL, 0x09, 0x26); */
/* don't know what this is, but it's 0 from bootup anyway */
vga_wgfx(NULL, 0x15, 0x00);
/* was set to 0x01 by my bios in text and vesa modes */
vga_wgfx(NULL, 0x0A, par->GeneralLockReg);
/*
* The color mode needs to be set before calling vgaHWRestore
* to ensure the DAC is initialized properly.
*
* NOTE: Make sure we don't change bits make sure we don't change
* any reserved bits.
*/
temp = vga_rgfx(NULL, 0x90);
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
temp &= 0xF0; /* Save bits 7:4 */
temp |= (par->ExtColorModeSelect & ~0xF0);
break;
case FB_ACCEL_NEOMAGIC_NM2090:
case FB_ACCEL_NEOMAGIC_NM2093:
case FB_ACCEL_NEOMAGIC_NM2097:
case FB_ACCEL_NEOMAGIC_NM2160:
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
temp &= 0x70; /* Save bits 6:4 */
temp |= (par->ExtColorModeSelect & ~0x70);
break;
}
vga_wgfx(NULL, 0x90, temp);
/*
* In some rare cases a lockup might occur if we don't delay
* here. (Reported by Miles Lane)
*/
//mdelay(200);
/*
* Disable horizontal and vertical graphics and text expansions so
* that vgaHWRestore works properly.
*/
temp = vga_rgfx(NULL, 0x25);
temp &= 0x39;
vga_wgfx(NULL, 0x25, temp);
/*
* Sleep for 200ms to make sure that the two operations above have
* had time to take effect.
*/
mdelay(200);
/*
* This function handles restoring the generic VGA registers. */
vgaHWRestore(info, par);
/* linear colormap for non palettized modes */
switch (info->var.bits_per_pixel) {
case 8:
/* PseudoColor, 256 */
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
break;
case 16:
/* TrueColor, 64k */
info->fix.visual = FB_VISUAL_TRUECOLOR;
for (i = 0; i < 64; i++) {
outb(i, 0x3c8);
outb(i << 1, 0x3c9);
outb(i, 0x3c9);
outb(i << 1, 0x3c9);
}
break;
case 24:
#ifdef NO_32BIT_SUPPORT_YET
case 32:
#endif
/* TrueColor, 16m */
info->fix.visual = FB_VISUAL_TRUECOLOR;
for (i = 0; i < 256; i++) {
outb(i, 0x3c8);
outb(i, 0x3c9);
outb(i, 0x3c9);
outb(i, 0x3c9);
}
break;
}
vga_wgfx(NULL, 0x0E, par->ExtCRTDispAddr);
vga_wgfx(NULL, 0x0F, par->ExtCRTOffset);
temp = vga_rgfx(NULL, 0x10);
temp &= 0x0F; /* Save bits 3:0 */
temp |= (par->SysIfaceCntl1 & ~0x0F); /* VESA Bios sets bit 1! */
vga_wgfx(NULL, 0x10, temp);
vga_wgfx(NULL, 0x11, par->SysIfaceCntl2);
vga_wgfx(NULL, 0x15, 0 /*par->SingleAddrPage */ );
vga_wgfx(NULL, 0x16, 0 /*par->DualAddrPage */ );
temp = vga_rgfx(NULL, 0x20);
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
temp &= 0xFC; /* Save bits 7:2 */
temp |= (par->PanelDispCntlReg1 & ~0xFC);
break;
case FB_ACCEL_NEOMAGIC_NM2090:
case FB_ACCEL_NEOMAGIC_NM2093:
case FB_ACCEL_NEOMAGIC_NM2097:
case FB_ACCEL_NEOMAGIC_NM2160:
temp &= 0xDC; /* Save bits 7:6,4:2 */
temp |= (par->PanelDispCntlReg1 & ~0xDC);
break;
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
temp &= 0x98; /* Save bits 7,4:3 */
temp |= (par->PanelDispCntlReg1 & ~0x98);
break;
}
vga_wgfx(NULL, 0x20, temp);
temp = vga_rgfx(NULL, 0x25);
temp &= 0x38; /* Save bits 5:3 */
temp |= (par->PanelDispCntlReg2 & ~0x38);
vga_wgfx(NULL, 0x25, temp);
if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
temp = vga_rgfx(NULL, 0x30);
temp &= 0xEF; /* Save bits 7:5 and bits 3:0 */
temp |= (par->PanelDispCntlReg3 & ~0xEF);
vga_wgfx(NULL, 0x30, temp);
}
vga_wgfx(NULL, 0x28, par->PanelVertCenterReg1);
vga_wgfx(NULL, 0x29, par->PanelVertCenterReg2);
vga_wgfx(NULL, 0x2a, par->PanelVertCenterReg3);
if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
vga_wgfx(NULL, 0x32, par->PanelVertCenterReg4);
vga_wgfx(NULL, 0x33, par->PanelHorizCenterReg1);
vga_wgfx(NULL, 0x34, par->PanelHorizCenterReg2);
vga_wgfx(NULL, 0x35, par->PanelHorizCenterReg3);
}
if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2160)
vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
vga_wgfx(NULL, 0x37, par->PanelVertCenterReg5);
vga_wgfx(NULL, 0x38, par->PanelHorizCenterReg5);
clock_hi = 1;
}
/* Program VCLK3 if needed. */
if (par->ProgramVCLK && ((vga_rgfx(NULL, 0x9B) != par->VCLK3NumeratorLow)
|| (vga_rgfx(NULL, 0x9F) != par->VCLK3Denominator)
|| (clock_hi && ((vga_rgfx(NULL, 0x8F) & ~0x0f)
!= (par->VCLK3NumeratorHigh &
~0x0F))))) {
vga_wgfx(NULL, 0x9B, par->VCLK3NumeratorLow);
if (clock_hi) {
temp = vga_rgfx(NULL, 0x8F);
temp &= 0x0F; /* Save bits 3:0 */
temp |= (par->VCLK3NumeratorHigh & ~0x0F);
vga_wgfx(NULL, 0x8F, temp);
}
vga_wgfx(NULL, 0x9F, par->VCLK3Denominator);
}
if (par->biosMode)
vga_wcrt(NULL, 0x23, par->biosMode);
vga_wgfx(NULL, 0x93, 0xc0); /* Gives 5x faster framebuffer writes !!! */
/* Program vertical extension register */
if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
vga_wcrt(NULL, 0x70, par->VerticalExt);
}
vgaHWProtect(0); /* Turn on screen */
/* Calling this also locks offset registers required in update_start */
neoLock(&par->state);
info->fix.line_length =
info->var.xres_virtual * (info->var.bits_per_pixel >> 3);
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_accel_init(info, &info->var);
break;
default:
break;
}
return 0;
}
/*
* Pan or Wrap the Display
*/
static int neofb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct neofb_par *par = info->par;
struct vgastate *state = &par->state;
int oldExtCRTDispAddr;
int Base;
DBG("neofb_update_start");
Base = (var->yoffset * info->var.xres_virtual + var->xoffset) >> 2;
Base *= (info->var.bits_per_pixel + 7) / 8;
neoUnlock();
/*
* These are the generic starting address registers.
*/
vga_wcrt(state->vgabase, 0x0C, (Base & 0x00FF00) >> 8);
vga_wcrt(state->vgabase, 0x0D, (Base & 0x00FF));
/*
* Make sure we don't clobber some other bits that might already
* have been set. NOTE: NM2200 has a writable bit 3, but it shouldn't
* be needed.
*/
oldExtCRTDispAddr = vga_rgfx(NULL, 0x0E);
vga_wgfx(state->vgabase, 0x0E, (((Base >> 16) & 0x0f) | (oldExtCRTDispAddr & 0xf0)));
neoLock(state);
return 0;
}
static int neofb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *fb)
{
if (regno >= fb->cmap.len || regno > 255)
return -EINVAL;
if (fb->var.bits_per_pixel <= 8) {
outb(regno, 0x3c8);
outb(red >> 10, 0x3c9);
outb(green >> 10, 0x3c9);
outb(blue >> 10, 0x3c9);
} else if (regno < 16) {
switch (fb->var.bits_per_pixel) {
case 16:
((u32 *) fb->pseudo_palette)[regno] =
((red & 0xf800)) | ((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11);
break;
case 24:
((u32 *) fb->pseudo_palette)[regno] =
((red & 0xff00) << 8) | ((green & 0xff00)) |
((blue & 0xff00) >> 8);
break;
#ifdef NO_32BIT_SUPPORT_YET
case 32:
((u32 *) fb->pseudo_palette)[regno] =
((transp & 0xff00) << 16) | ((red & 0xff00) << 8) |
((green & 0xff00)) | ((blue & 0xff00) >> 8);
break;
#endif
default:
return 1;
}
}
return 0;
}
/*
* (Un)Blank the display.
*/
static int neofb_blank(int blank_mode, struct fb_info *info)
{
/*
* Blank the screen if blank_mode != 0, else unblank.
* Return 0 if blanking succeeded, != 0 if un-/blanking failed due to
* e.g. a video mode which doesn't support it. Implements VESA suspend
* and powerdown modes for monitors, and backlight control on LCDs.
* blank_mode == 0: unblanked (backlight on)
* blank_mode == 1: blank (backlight on)
* blank_mode == 2: suspend vsync (backlight off)
* blank_mode == 3: suspend hsync (backlight off)
* blank_mode == 4: powerdown (backlight off)
*
* wms...Enable VESA DPMS compatible powerdown mode
* run "setterm -powersave powerdown" to take advantage
*/
struct neofb_par *par = info->par;
int seqflags, lcdflags, dpmsflags, reg, tmpdisp;
/*
* Read back the register bits related to display configuration. They might
* have been changed underneath the driver via Fn key stroke.
*/
neoUnlock();
tmpdisp = vga_rgfx(NULL, 0x20) & 0x03;
neoLock(&par->state);
/* In case we blank the screen, we want to store the possibly new
* configuration in the driver. During un-blank, we re-apply this setting,
* since the LCD bit will be cleared in order to switch off the backlight.
*/
if (par->PanelDispCntlRegRead) {
par->PanelDispCntlReg1 = tmpdisp;
}
par->PanelDispCntlRegRead = !blank_mode;
switch (blank_mode) {
case FB_BLANK_POWERDOWN: /* powerdown - both sync lines down */
seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
lcdflags = 0; /* LCD off */
dpmsflags = NEO_GR01_SUPPRESS_HSYNC |
NEO_GR01_SUPPRESS_VSYNC;
#ifdef CONFIG_TOSHIBA
/* Do we still need this ? */
/* attempt to turn off backlight on toshiba; also turns off external */
{
SMMRegisters regs;
regs.eax = 0xff00; /* HCI_SET */
regs.ebx = 0x0002; /* HCI_BACKLIGHT */
regs.ecx = 0x0000; /* HCI_DISABLE */
tosh_smm(&regs);
}
#endif
break;
case FB_BLANK_HSYNC_SUSPEND: /* hsync off */
seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
lcdflags = 0; /* LCD off */
dpmsflags = NEO_GR01_SUPPRESS_HSYNC;
break;
case FB_BLANK_VSYNC_SUSPEND: /* vsync off */
seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
lcdflags = 0; /* LCD off */
dpmsflags = NEO_GR01_SUPPRESS_VSYNC;
break;
case FB_BLANK_NORMAL: /* just blank screen (backlight stays on) */
seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
/*
* During a blank operation with the LID shut, we might store "LCD off"
* by mistake. Due to timing issues, the BIOS may switch the lights
* back on, and we turn it back off once we "unblank".
*
* So here is an attempt to implement ">=" - if we are in the process
* of unblanking, and the LCD bit is unset in the driver but set in the
* register, we must keep it.
*/
lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0x02); /* LCD normal */
dpmsflags = 0x00; /* no hsync/vsync suppression */
break;
case FB_BLANK_UNBLANK: /* unblank */
seqflags = 0; /* Enable sequencer */
lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0x02); /* LCD normal */
dpmsflags = 0x00; /* no hsync/vsync suppression */
#ifdef CONFIG_TOSHIBA
/* Do we still need this ? */
/* attempt to re-enable backlight/external on toshiba */
{
SMMRegisters regs;
regs.eax = 0xff00; /* HCI_SET */
regs.ebx = 0x0002; /* HCI_BACKLIGHT */
regs.ecx = 0x0001; /* HCI_ENABLE */
tosh_smm(&regs);
}
#endif
break;
default: /* Anything else we don't understand; return 1 to tell
* fb_blank we didn't aactually do anything */
return 1;
}
neoUnlock();
reg = (vga_rseq(NULL, 0x01) & ~0x20) | seqflags;
vga_wseq(NULL, 0x01, reg);
reg = (vga_rgfx(NULL, 0x20) & ~0x02) | lcdflags;
vga_wgfx(NULL, 0x20, reg);
reg = (vga_rgfx(NULL, 0x01) & ~0xF0) | 0x80 | dpmsflags;
vga_wgfx(NULL, 0x01, reg);
neoLock(&par->state);
return 0;
}
static void
neo2200_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct neofb_par *par = info->par;
u_long dst, rop;
dst = rect->dx + rect->dy * info->var.xres_virtual;
rop = rect->rop ? 0x060000 : 0x0c0000;
neo2200_wait_fifo(info, 4);
/* set blt control */
writel(NEO_BC3_FIFO_EN |
NEO_BC0_SRC_IS_FG | NEO_BC3_SKIP_MAPPING |
// NEO_BC3_DST_XY_ADDR |
// NEO_BC3_SRC_XY_ADDR |
rop, &par->neo2200->bltCntl);
switch (info->var.bits_per_pixel) {
case 8:
writel(rect->color, &par->neo2200->fgColor);
break;
case 16:
case 24:
writel(((u32 *) (info->pseudo_palette))[rect->color],
&par->neo2200->fgColor);
break;
}
writel(dst * ((info->var.bits_per_pixel + 7) >> 3),
&par->neo2200->dstStart);
writel((rect->height << 16) | (rect->width & 0xffff),
&par->neo2200->xyExt);
}
static void
neo2200_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
struct neofb_par *par = info->par;
u_long src, dst, bltCntl;
bltCntl = NEO_BC3_FIFO_EN | NEO_BC3_SKIP_MAPPING | 0x0C0000;
if ((dy > sy) || ((dy == sy) && (dx > sx))) {
/* Start with the lower right corner */
sy += (area->height - 1);
dy += (area->height - 1);
sx += (area->width - 1);
dx += (area->width - 1);
bltCntl |= NEO_BC0_X_DEC | NEO_BC0_DST_Y_DEC | NEO_BC0_SRC_Y_DEC;
}
src = sx * (info->var.bits_per_pixel >> 3) + sy*info->fix.line_length;
dst = dx * (info->var.bits_per_pixel >> 3) + dy*info->fix.line_length;
neo2200_wait_fifo(info, 4);
/* set blt control */
writel(bltCntl, &par->neo2200->bltCntl);
writel(src, &par->neo2200->srcStart);
writel(dst, &par->neo2200->dstStart);
writel((area->height << 16) | (area->width & 0xffff),
&par->neo2200->xyExt);
}
static void
neo2200_imageblit(struct fb_info *info, const struct fb_image *image)
{
struct neofb_par *par = info->par;
int s_pitch = (image->width * image->depth + 7) >> 3;
int scan_align = info->pixmap.scan_align - 1;
int buf_align = info->pixmap.buf_align - 1;
int bltCntl_flags, d_pitch, data_len;
// The data is padded for the hardware
d_pitch = (s_pitch + scan_align) & ~scan_align;
data_len = ((d_pitch * image->height) + buf_align) & ~buf_align;
neo2200_sync(info);
if (image->depth == 1) {
if (info->var.bits_per_pixel == 24 && image->width < 16) {
/* FIXME. There is a bug with accelerated color-expanded
* transfers in 24 bit mode if the image being transferred
* is less than 16 bits wide. This is due to insufficient
* padding when writing the image. We need to adjust
* struct fb_pixmap. Not yet done. */
cfb_imageblit(info, image);
return;
}
bltCntl_flags = NEO_BC0_SRC_MONO;
} else if (image->depth == info->var.bits_per_pixel) {
bltCntl_flags = 0;
} else {
/* We don't currently support hardware acceleration if image
* depth is different from display */
cfb_imageblit(info, image);
return;
}
switch (info->var.bits_per_pixel) {
case 8:
writel(image->fg_color, &par->neo2200->fgColor);
writel(image->bg_color, &par->neo2200->bgColor);
break;
case 16:
case 24:
writel(((u32 *) (info->pseudo_palette))[image->fg_color],
&par->neo2200->fgColor);
writel(((u32 *) (info->pseudo_palette))[image->bg_color],
&par->neo2200->bgColor);
break;
}
writel(NEO_BC0_SYS_TO_VID |
NEO_BC3_SKIP_MAPPING | bltCntl_flags |
// NEO_BC3_DST_XY_ADDR |
0x0c0000, &par->neo2200->bltCntl);
writel(0, &par->neo2200->srcStart);
// par->neo2200->dstStart = (image->dy << 16) | (image->dx & 0xffff);
writel(((image->dx & 0xffff) * (info->var.bits_per_pixel >> 3) +
image->dy * info->fix.line_length), &par->neo2200->dstStart);
writel((image->height << 16) | (image->width & 0xffff),
&par->neo2200->xyExt);
memcpy_toio(par->mmio_vbase + 0x100000, image->data, data_len);
}
static void
neofb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_fillrect(info, rect);
break;
default:
cfb_fillrect(info, rect);
break;
}
}
static void
neofb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_copyarea(info, area);
break;
default:
cfb_copyarea(info, area);
break;
}
}
static void
neofb_imageblit(struct fb_info *info, const struct fb_image *image)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_imageblit(info, image);
break;
default:
cfb_imageblit(info, image);
break;
}
}
static int
neofb_sync(struct fb_info *info)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_sync(info);
break;
default:
break;
}
return 0;
}
/*
static void
neofb_draw_cursor(struct fb_info *info, u8 *dst, u8 *src, unsigned int width)
{
//memset_io(info->sprite.addr, 0xff, 1);
}
static int
neofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
struct neofb_par *par = (struct neofb_par *) info->par;
* Disable cursor *
write_le32(NEOREG_CURSCNTL, ~NEO_CURS_ENABLE, par);
if (cursor->set & FB_CUR_SETPOS) {
u32 x = cursor->image.dx;
u32 y = cursor->image.dy;
info->cursor.image.dx = x;
info->cursor.image.dy = y;
write_le32(NEOREG_CURSX, x, par);
write_le32(NEOREG_CURSY, y, par);
}
if (cursor->set & FB_CUR_SETSIZE) {
info->cursor.image.height = cursor->image.height;
info->cursor.image.width = cursor->image.width;
}
if (cursor->set & FB_CUR_SETHOT)
info->cursor.hot = cursor->hot;
if (cursor->set & FB_CUR_SETCMAP) {
if (cursor->image.depth == 1) {
u32 fg = cursor->image.fg_color;
u32 bg = cursor->image.bg_color;
info->cursor.image.fg_color = fg;
info->cursor.image.bg_color = bg;
fg = ((fg & 0xff0000) >> 16) | ((fg & 0xff) << 16) | (fg & 0xff00);
bg = ((bg & 0xff0000) >> 16) | ((bg & 0xff) << 16) | (bg & 0xff00);
write_le32(NEOREG_CURSFGCOLOR, fg, par);
write_le32(NEOREG_CURSBGCOLOR, bg, par);
}
}
if (cursor->set & FB_CUR_SETSHAPE)
fb_load_cursor_image(info);
if (info->cursor.enable)
write_le32(NEOREG_CURSCNTL, NEO_CURS_ENABLE, par);
return 0;
}
*/
static const struct fb_ops neofb_ops = {
.owner = THIS_MODULE,
.fb_open = neofb_open,
.fb_release = neofb_release,
__FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_check_var = neofb_check_var,
.fb_set_par = neofb_set_par,
.fb_setcolreg = neofb_setcolreg,
.fb_pan_display = neofb_pan_display,
.fb_blank = neofb_blank,
.fb_sync = neofb_sync,
.fb_fillrect = neofb_fillrect,
.fb_copyarea = neofb_copyarea,
.fb_imageblit = neofb_imageblit,
__FB_DEFAULT_IOMEM_OPS_MMAP,
};
/* --------------------------------------------------------------------- */
static struct fb_videomode mode800x480 = {
.xres = 800,
.yres = 480,
.pixclock = 25000,
.left_margin = 88,
.right_margin = 40,
.upper_margin = 23,
.lower_margin = 1,
.hsync_len = 128,
.vsync_len = 4,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
};
static int neo_map_mmio(struct fb_info *info, struct pci_dev *dev)
{
struct neofb_par *par = info->par;
DBG("neo_map_mmio");
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
info->fix.mmio_start = pci_resource_start(dev, 0)+
0x100000;
break;
case FB_ACCEL_NEOMAGIC_NM2090:
case FB_ACCEL_NEOMAGIC_NM2093:
info->fix.mmio_start = pci_resource_start(dev, 0)+
0x200000;
break;
case FB_ACCEL_NEOMAGIC_NM2160:
case FB_ACCEL_NEOMAGIC_NM2097:
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
info->fix.mmio_start = pci_resource_start(dev, 1);
break;
default:
info->fix.mmio_start = pci_resource_start(dev, 0);
}
info->fix.mmio_len = MMIO_SIZE;
if (!request_mem_region
(info->fix.mmio_start, MMIO_SIZE, "memory mapped I/O")) {
printk("neofb: memory mapped IO in use\n");
return -EBUSY;
}
par->mmio_vbase = ioremap(info->fix.mmio_start, MMIO_SIZE);
if (!par->mmio_vbase) {
printk("neofb: unable to map memory mapped IO\n");
release_mem_region(info->fix.mmio_start,
info->fix.mmio_len);
return -ENOMEM;
} else
printk(KERN_INFO "neofb: mapped io at %p\n",
par->mmio_vbase);
return 0;
}
static void neo_unmap_mmio(struct fb_info *info)
{
struct neofb_par *par = info->par;
DBG("neo_unmap_mmio");
iounmap(par->mmio_vbase);
par->mmio_vbase = NULL;
release_mem_region(info->fix.mmio_start,
info->fix.mmio_len);
}
static int neo_map_video(struct fb_info *info, struct pci_dev *dev,
int video_len)
{
//unsigned long addr;
struct neofb_par *par = info->par;
DBG("neo_map_video");
info->fix.smem_start = pci_resource_start(dev, 0);
info->fix.smem_len = video_len;
if (!request_mem_region(info->fix.smem_start, info->fix.smem_len,
"frame buffer")) {
printk("neofb: frame buffer in use\n");
return -EBUSY;
}
info->screen_base =
ioremap_wc(info->fix.smem_start, info->fix.smem_len);
if (!info->screen_base) {
printk("neofb: unable to map screen memory\n");
release_mem_region(info->fix.smem_start,
info->fix.smem_len);
return -ENOMEM;
} else
printk(KERN_INFO "neofb: mapped framebuffer at %p\n",
info->screen_base);
par->wc_cookie = arch_phys_wc_add(info->fix.smem_start,
pci_resource_len(dev, 0));
/* Clear framebuffer, it's all white in memory after boot */
memset_io(info->screen_base, 0, info->fix.smem_len);
/* Allocate Cursor drawing pad.
info->fix.smem_len -= PAGE_SIZE;
addr = info->fix.smem_start + info->fix.smem_len;
write_le32(NEOREG_CURSMEMPOS, ((0x000f & (addr >> 10)) << 8) |
((0x0ff0 & (addr >> 10)) >> 4), par);
addr = (unsigned long) info->screen_base + info->fix.smem_len;
info->sprite.addr = (u8 *) addr; */
return 0;
}
static void neo_unmap_video(struct fb_info *info)
{
struct neofb_par *par = info->par;
DBG("neo_unmap_video");
arch_phys_wc_del(par->wc_cookie);
iounmap(info->screen_base);
info->screen_base = NULL;
release_mem_region(info->fix.smem_start,
info->fix.smem_len);
}
static int neo_scan_monitor(struct fb_info *info)
{
struct neofb_par *par = info->par;
unsigned char type, display;
int w;
// Eventually we will have i2c support.
info->monspecs.modedb = kmalloc(sizeof(struct fb_videomode), GFP_KERNEL);
if (!info->monspecs.modedb)
return -ENOMEM;
info->monspecs.modedb_len = 1;
/* Determine the panel type */
vga_wgfx(NULL, 0x09, 0x26);
type = vga_rgfx(NULL, 0x21);
display = vga_rgfx(NULL, 0x20);
if (!par->internal_display && !par->external_display) {
par->internal_display = display & 2 || !(display & 3) ? 1 : 0;
par->external_display = display & 1;
printk (KERN_INFO "Autodetected %s display\n",
par->internal_display && par->external_display ? "simultaneous" :
par->internal_display ? "internal" : "external");
}
/* Determine panel width -- used in NeoValidMode. */
w = vga_rgfx(NULL, 0x20);
vga_wgfx(NULL, 0x09, 0x00);
switch ((w & 0x18) >> 3) {
case 0x00:
// 640x480@60
par->NeoPanelWidth = 640;
par->NeoPanelHeight = 480;
memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
break;
case 0x01:
par->NeoPanelWidth = 800;
if (par->libretto) {
par->NeoPanelHeight = 480;
memcpy(info->monspecs.modedb, &mode800x480, sizeof(struct fb_videomode));
} else {
// 800x600@60
par->NeoPanelHeight = 600;
memcpy(info->monspecs.modedb, &vesa_modes[8], sizeof(struct fb_videomode));
}
break;
case 0x02:
// 1024x768@60
par->NeoPanelWidth = 1024;
par->NeoPanelHeight = 768;
memcpy(info->monspecs.modedb, &vesa_modes[13], sizeof(struct fb_videomode));
break;
case 0x03:
/* 1280x1024@60 panel support needs to be added */
#ifdef NOT_DONE
par->NeoPanelWidth = 1280;
par->NeoPanelHeight = 1024;
memcpy(info->monspecs.modedb, &vesa_modes[20], sizeof(struct fb_videomode));
break;
#else
printk(KERN_ERR
"neofb: Only 640x480, 800x600/480 and 1024x768 panels are currently supported\n");
kfree(info->monspecs.modedb);
return -1;
#endif
default:
// 640x480@60
par->NeoPanelWidth = 640;
par->NeoPanelHeight = 480;
memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
break;
}
printk(KERN_INFO "Panel is a %dx%d %s %s display\n",
par->NeoPanelWidth,
par->NeoPanelHeight,
(type & 0x02) ? "color" : "monochrome",
(type & 0x10) ? "TFT" : "dual scan");
return 0;
}
static int neo_init_hw(struct fb_info *info)
{
struct neofb_par *par = info->par;
int videoRam = 896;
int maxClock = 65000;
int CursorOff = 0x100;
DBG("neo_init_hw");
neoUnlock();
#if 0
printk(KERN_DEBUG "--- Neo extended register dump ---\n");
for (int w = 0; w < 0x85; w++)
printk(KERN_DEBUG "CR %p: %p\n", (void *) w,
(void *) vga_rcrt(NULL, w));
for (int w = 0; w < 0xC7; w++)
printk(KERN_DEBUG "GR %p: %p\n", (void *) w,
(void *) vga_rgfx(NULL, w));
#endif
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
videoRam = 896;
maxClock = 65000;
break;
case FB_ACCEL_NEOMAGIC_NM2090:
case FB_ACCEL_NEOMAGIC_NM2093:
case FB_ACCEL_NEOMAGIC_NM2097:
videoRam = 1152;
maxClock = 80000;
break;
case FB_ACCEL_NEOMAGIC_NM2160:
videoRam = 2048;
maxClock = 90000;
break;
case FB_ACCEL_NEOMAGIC_NM2200:
videoRam = 2560;
maxClock = 110000;
break;
case FB_ACCEL_NEOMAGIC_NM2230:
videoRam = 3008;
maxClock = 110000;
break;
case FB_ACCEL_NEOMAGIC_NM2360:
videoRam = 4096;
maxClock = 110000;
break;
case FB_ACCEL_NEOMAGIC_NM2380:
videoRam = 6144;
maxClock = 110000;
break;
}
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
case FB_ACCEL_NEOMAGIC_NM2090:
case FB_ACCEL_NEOMAGIC_NM2093:
CursorOff = 0x100;
break;
case FB_ACCEL_NEOMAGIC_NM2097:
case FB_ACCEL_NEOMAGIC_NM2160:
CursorOff = 0x100;
break;
case FB_ACCEL_NEOMAGIC_NM2200:
case FB_ACCEL_NEOMAGIC_NM2230:
case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
CursorOff = 0x1000;
par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
break;
}
/*
info->sprite.size = CursorMem;
info->sprite.scan_align = 1;
info->sprite.buf_align = 1;
info->sprite.flags = FB_PIXMAP_IO;
info->sprite.outbuf = neofb_draw_cursor;
*/
par->maxClock = maxClock;
par->cursorOff = CursorOff;
return videoRam * 1024;
}
static struct fb_info *neo_alloc_fb_info(struct pci_dev *dev,
const struct pci_device_id *id)
{
struct fb_info *info;
struct neofb_par *par;
info = framebuffer_alloc(sizeof(struct neofb_par), &dev->dev);
if (!info)
return NULL;
par = info->par;
info->fix.accel = id->driver_data;
par->pci_burst = !nopciburst;
par->lcd_stretch = !nostretch;
par->libretto = libretto;
par->internal_display = internal;
par->external_display = external;
info->flags = FBINFO_HWACCEL_YPAN;
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2070:
strscpy(info->fix.id, "MagicGraph128", sizeof(info->fix.id));
break;
case FB_ACCEL_NEOMAGIC_NM2090:
strscpy(info->fix.id, "MagicGraph128V", sizeof(info->fix.id));
break;
case FB_ACCEL_NEOMAGIC_NM2093:
strscpy(info->fix.id, "MagicGraph128ZV", sizeof(info->fix.id));
break;
case FB_ACCEL_NEOMAGIC_NM2097:
strscpy(info->fix.id, "Mag.Graph128ZV+", sizeof(info->fix.id));
break;
case FB_ACCEL_NEOMAGIC_NM2160:
strscpy(info->fix.id, "MagicGraph128XD", sizeof(info->fix.id));
break;
case FB_ACCEL_NEOMAGIC_NM2200:
strscpy(info->fix.id, "MagicGraph256AV", sizeof(info->fix.id));
info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT;
break;
case FB_ACCEL_NEOMAGIC_NM2230:
strscpy(info->fix.id, "Mag.Graph256AV+", sizeof(info->fix.id));
info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT;
break;
case FB_ACCEL_NEOMAGIC_NM2360:
strscpy(info->fix.id, "MagicGraph256ZX", sizeof(info->fix.id));
info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT;
break;
case FB_ACCEL_NEOMAGIC_NM2380:
strscpy(info->fix.id, "Mag.Graph256XL+", sizeof(info->fix.id));
info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT;
break;
}
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.type_aux = 0;
info->fix.xpanstep = 0;
info->fix.ypanstep = 4;
info->fix.ywrapstep = 0;
info->fix.accel = id->driver_data;
info->fbops = &neofb_ops;
info->pseudo_palette = par->palette;
return info;
}
static void neo_free_fb_info(struct fb_info *info)
{
if (info) {
/*
* Free the colourmap
*/
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
}
/* --------------------------------------------------------------------- */
static int neofb_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
struct fb_info *info;
u_int h_sync, v_sync;
int video_len, err;
DBG("neofb_probe");
err = aperture_remove_conflicting_pci_devices(dev, "neofb");
if (err)
return err;
err = pci_enable_device(dev);
if (err)
return err;
err = -ENOMEM;
info = neo_alloc_fb_info(dev, id);
if (!info)
return err;
err = neo_map_mmio(info, dev);
if (err)
goto err_map_mmio;
err = neo_scan_monitor(info);
if (err)
goto err_scan_monitor;
video_len = neo_init_hw(info);
if (video_len < 0) {
err = video_len;
goto err_init_hw;
}
err = neo_map_video(info, dev, video_len);
if (err)
goto err_init_hw;
if (!fb_find_mode(&info->var, info, mode_option, NULL, 0,
info->monspecs.modedb, 16)) {
printk(KERN_ERR "neofb: Unable to find usable video mode.\n");
err = -EINVAL;
goto err_map_video;
}
/*
* Calculate the hsync and vsync frequencies. Note that
* we split the 1e12 constant up so that we can preserve
* the precision and fit the results into 32-bit registers.
* (1953125000 * 512 = 1e12)
*/
h_sync = 1953125000 / info->var.pixclock;
h_sync =
h_sync * 512 / (info->var.xres + info->var.left_margin +
info->var.right_margin + info->var.hsync_len);
v_sync =
h_sync / (info->var.yres + info->var.upper_margin +
info->var.lower_margin + info->var.vsync_len);
printk(KERN_INFO "neofb v" NEOFB_VERSION
": %dkB VRAM, using %dx%d, %d.%03dkHz, %dHz\n",
info->fix.smem_len >> 10, info->var.xres,
info->var.yres, h_sync / 1000, h_sync % 1000, v_sync);
err = fb_alloc_cmap(&info->cmap, 256, 0);
if (err < 0)
goto err_map_video;
err = register_framebuffer(info);
if (err < 0)
goto err_reg_fb;
fb_info(info, "%s frame buffer device\n", info->fix.id);
/*
* Our driver data
*/
pci_set_drvdata(dev, info);
return 0;
err_reg_fb:
fb_dealloc_cmap(&info->cmap);
err_map_video:
neo_unmap_video(info);
err_init_hw:
fb_destroy_modedb(info->monspecs.modedb);
err_scan_monitor:
neo_unmap_mmio(info);
err_map_mmio:
neo_free_fb_info(info);
return err;
}
static void neofb_remove(struct pci_dev *dev)
{
struct fb_info *info = pci_get_drvdata(dev);
DBG("neofb_remove");
if (info) {
unregister_framebuffer(info);
neo_unmap_video(info);
fb_destroy_modedb(info->monspecs.modedb);
neo_unmap_mmio(info);
neo_free_fb_info(info);
}
}
static const struct pci_device_id neofb_devices[] = {
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2070,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2070},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2090,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2090},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2093,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2093},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2097,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2097},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2160,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2160},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2200,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2200},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2230,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2230},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2360,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2360},
{PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2380,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2380},
{0, 0, 0, 0, 0, 0, 0}
};
MODULE_DEVICE_TABLE(pci, neofb_devices);
static struct pci_driver neofb_driver = {
.name = "neofb",
.id_table = neofb_devices,
.probe = neofb_probe,
.remove = neofb_remove,
};
/* ************************* init in-kernel code ************************** */
#ifndef MODULE
static int __init neofb_setup(char *options)
{
char *this_opt;
DBG("neofb_setup");
if (!options || !*options)
return 0;
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!*this_opt)
continue;
if (!strncmp(this_opt, "internal", 8))
internal = 1;
else if (!strncmp(this_opt, "external", 8))
external = 1;
else if (!strncmp(this_opt, "nostretch", 9))
nostretch = 1;
else if (!strncmp(this_opt, "nopciburst", 10))
nopciburst = 1;
else if (!strncmp(this_opt, "libretto", 8))
libretto = 1;
else
mode_option = this_opt;
}
return 0;
}
#endif /* MODULE */
static int __init neofb_init(void)
{
#ifndef MODULE
char *option = NULL;
#endif
if (fb_modesetting_disabled("neofb"))
return -ENODEV;
#ifndef MODULE
if (fb_get_options("neofb", &option))
return -ENODEV;
neofb_setup(option);
#endif
return pci_register_driver(&neofb_driver);
}
module_init(neofb_init);
#ifdef MODULE
static void __exit neofb_exit(void)
{
pci_unregister_driver(&neofb_driver);
}
module_exit(neofb_exit);
#endif /* MODULE */
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