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-rw-r--r--drivers/video/fbdev/neofb.c2229
1 files changed, 2229 insertions, 0 deletions
diff --git a/drivers/video/fbdev/neofb.c b/drivers/video/fbdev/neofb.c
new file mode 100644
index 000000000..93a2d2d1a
--- /dev/null
+++ b/drivers/video/fbdev/neofb.c
@@ -0,0 +1,2229 @@
+/*
+ * 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_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,
+};
+
+/* --------------------------------------------------------------------- */
+
+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_DEFAULT | FBINFO_HWACCEL_YPAN;
+
+ switch (info->fix.accel) {
+ case FB_ACCEL_NEOMAGIC_NM2070:
+ snprintf(info->fix.id, sizeof(info->fix.id),
+ "MagicGraph 128");
+ break;
+ case FB_ACCEL_NEOMAGIC_NM2090:
+ snprintf(info->fix.id, sizeof(info->fix.id),
+ "MagicGraph 128V");
+ break;
+ case FB_ACCEL_NEOMAGIC_NM2093:
+ snprintf(info->fix.id, sizeof(info->fix.id),
+ "MagicGraph 128ZV");
+ break;
+ case FB_ACCEL_NEOMAGIC_NM2097:
+ snprintf(info->fix.id, sizeof(info->fix.id),
+ "MagicGraph 128ZV+");
+ break;
+ case FB_ACCEL_NEOMAGIC_NM2160:
+ snprintf(info->fix.id, sizeof(info->fix.id),
+ "MagicGraph 128XD");
+ break;
+ case FB_ACCEL_NEOMAGIC_NM2200:
+ snprintf(info->fix.id, sizeof(info->fix.id),
+ "MagicGraph 256AV");
+ info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
+ FBINFO_HWACCEL_COPYAREA |
+ FBINFO_HWACCEL_FILLRECT;
+ break;
+ case FB_ACCEL_NEOMAGIC_NM2230:
+ snprintf(info->fix.id, sizeof(info->fix.id),
+ "MagicGraph 256AV+");
+ info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
+ FBINFO_HWACCEL_COPYAREA |
+ FBINFO_HWACCEL_FILLRECT;
+ break;
+ case FB_ACCEL_NEOMAGIC_NM2360:
+ snprintf(info->fix.id, sizeof(info->fix.id),
+ "MagicGraph 256ZX");
+ info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
+ FBINFO_HWACCEL_COPYAREA |
+ FBINFO_HWACCEL_FILLRECT;
+ break;
+ case FB_ACCEL_NEOMAGIC_NM2380:
+ snprintf(info->fix.id, sizeof(info->fix.id),
+ "MagicGraph 256XL+");
+ 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;
+
+ 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 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 01:13:55 +0000