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path: root/drivers/video/fbdev/tdfxfb.c
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Diffstat (limited to 'drivers/video/fbdev/tdfxfb.c')
-rw-r--r--drivers/video/fbdev/tdfxfb.c1686
1 files changed, 1686 insertions, 0 deletions
diff --git a/drivers/video/fbdev/tdfxfb.c b/drivers/video/fbdev/tdfxfb.c
new file mode 100644
index 000000000000..f761fe375f5b
--- /dev/null
+++ b/drivers/video/fbdev/tdfxfb.c
@@ -0,0 +1,1686 @@
+/*
+ *
+ * tdfxfb.c
+ *
+ * Author: Hannu Mallat <hmallat@cc.hut.fi>
+ *
+ * Copyright © 1999 Hannu Mallat
+ * All rights reserved
+ *
+ * Created : Thu Sep 23 18:17:43 1999, hmallat
+ * Last modified: Tue Nov 2 21:19:47 1999, hmallat
+ *
+ * I2C part copied from the i2c-voodoo3.c driver by:
+ * Frodo Looijaard <frodol@dds.nl>,
+ * Philip Edelbrock <phil@netroedge.com>,
+ * Ralph Metzler <rjkm@thp.uni-koeln.de>, and
+ * Mark D. Studebaker <mdsxyz123@yahoo.com>
+ *
+ * Lots of the information here comes from the Daryll Strauss' Banshee
+ * patches to the XF86 server, and the rest comes from the 3dfx
+ * Banshee specification. I'm very much indebted to Daryll for his
+ * work on the X server.
+ *
+ * Voodoo3 support was contributed Harold Oga. Lots of additions
+ * (proper acceleration, 24 bpp, hardware cursor) and bug fixes by Attila
+ * Kesmarki. Thanks guys!
+ *
+ * Voodoo1 and Voodoo2 support aren't relevant to this driver as they
+ * behave very differently from the Voodoo3/4/5. For anyone wanting to
+ * use frame buffer on the Voodoo1/2, see the sstfb driver (which is
+ * located at http://www.sourceforge.net/projects/sstfb).
+ *
+ * While I _am_ grateful to 3Dfx for releasing the specs for Banshee,
+ * I do wish the next version is a bit more complete. Without the XF86
+ * patches I couldn't have gotten even this far... for instance, the
+ * extensions to the VGA register set go completely unmentioned in the
+ * spec! Also, lots of references are made to the 'SST core', but no
+ * spec is publicly available, AFAIK.
+ *
+ * The structure of this driver comes pretty much from the Permedia
+ * driver by Ilario Nardinocchi, which in turn is based on skeletonfb.
+ *
+ * TODO:
+ * - multihead support (basically need to support an array of fb_infos)
+ * - support other architectures (PPC, Alpha); does the fact that the VGA
+ * core can be accessed only thru I/O (not memory mapped) complicate
+ * things?
+ *
+ * Version history:
+ *
+ * 0.1.4 (released 2002-05-28) ported over to new fbdev api by James Simmons
+ *
+ * 0.1.3 (released 1999-11-02) added Attila's panning support, code
+ * reorg, hwcursor address page size alignment
+ * (for mmapping both frame buffer and regs),
+ * and my changes to get rid of hardcoded
+ * VGA i/o register locations (uses PCI
+ * configuration info now)
+ * 0.1.2 (released 1999-10-19) added Attila Kesmarki's bug fixes and
+ * improvements
+ * 0.1.1 (released 1999-10-07) added Voodoo3 support by Harold Oga.
+ * 0.1.0 (released 1999-10-06) initial version
+ *
+ */
+
+#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/fb.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+
+#include <video/tdfx.h>
+
+#define DPRINTK(a, b...) pr_debug("fb: %s: " a, __func__ , ## b)
+
+#ifdef CONFIG_MTRR
+#include <asm/mtrr.h>
+#else
+/* duplicate asm/mtrr.h defines to work on archs without mtrr */
+#define MTRR_TYPE_WRCOMB 1
+
+static inline int mtrr_add(unsigned long base, unsigned long size,
+ unsigned int type, char increment)
+{
+ return -ENODEV;
+}
+static inline int mtrr_del(int reg, unsigned long base,
+ unsigned long size)
+{
+ return -ENODEV;
+}
+#endif
+
+#define BANSHEE_MAX_PIXCLOCK 270000
+#define VOODOO3_MAX_PIXCLOCK 300000
+#define VOODOO5_MAX_PIXCLOCK 350000
+
+static struct fb_fix_screeninfo tdfx_fix = {
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_PSEUDOCOLOR,
+ .ypanstep = 1,
+ .ywrapstep = 1,
+ .accel = FB_ACCEL_3DFX_BANSHEE
+};
+
+static struct fb_var_screeninfo tdfx_var = {
+ /* "640x480, 8 bpp @ 60 Hz */
+ .xres = 640,
+ .yres = 480,
+ .xres_virtual = 640,
+ .yres_virtual = 1024,
+ .bits_per_pixel = 8,
+ .red = {0, 8, 0},
+ .blue = {0, 8, 0},
+ .green = {0, 8, 0},
+ .activate = FB_ACTIVATE_NOW,
+ .height = -1,
+ .width = -1,
+ .accel_flags = FB_ACCELF_TEXT,
+ .pixclock = 39722,
+ .left_margin = 40,
+ .right_margin = 24,
+ .upper_margin = 32,
+ .lower_margin = 11,
+ .hsync_len = 96,
+ .vsync_len = 2,
+ .vmode = FB_VMODE_NONINTERLACED
+};
+
+/*
+ * PCI driver prototypes
+ */
+static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id);
+static void tdfxfb_remove(struct pci_dev *pdev);
+
+static struct pci_device_id tdfxfb_id_table[] = {
+ { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_BANSHEE,
+ PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
+ 0xff0000, 0 },
+ { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO3,
+ PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
+ 0xff0000, 0 },
+ { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO5,
+ PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
+ 0xff0000, 0 },
+ { 0, }
+};
+
+static struct pci_driver tdfxfb_driver = {
+ .name = "tdfxfb",
+ .id_table = tdfxfb_id_table,
+ .probe = tdfxfb_probe,
+ .remove = tdfxfb_remove,
+};
+
+MODULE_DEVICE_TABLE(pci, tdfxfb_id_table);
+
+/*
+ * Driver data
+ */
+static int nopan;
+static int nowrap = 1; /* not implemented (yet) */
+static int hwcursor = 1;
+static char *mode_option;
+/* mtrr option */
+static bool nomtrr;
+
+/* -------------------------------------------------------------------------
+ * Hardware-specific funcions
+ * ------------------------------------------------------------------------- */
+
+static inline u8 vga_inb(struct tdfx_par *par, u32 reg)
+{
+ return inb(par->iobase + reg - 0x300);
+}
+
+static inline void vga_outb(struct tdfx_par *par, u32 reg, u8 val)
+{
+ outb(val, par->iobase + reg - 0x300);
+}
+
+static inline void gra_outb(struct tdfx_par *par, u32 idx, u8 val)
+{
+ vga_outb(par, GRA_I, idx);
+ wmb();
+ vga_outb(par, GRA_D, val);
+ wmb();
+}
+
+static inline void seq_outb(struct tdfx_par *par, u32 idx, u8 val)
+{
+ vga_outb(par, SEQ_I, idx);
+ wmb();
+ vga_outb(par, SEQ_D, val);
+ wmb();
+}
+
+static inline u8 seq_inb(struct tdfx_par *par, u32 idx)
+{
+ vga_outb(par, SEQ_I, idx);
+ mb();
+ return vga_inb(par, SEQ_D);
+}
+
+static inline void crt_outb(struct tdfx_par *par, u32 idx, u8 val)
+{
+ vga_outb(par, CRT_I, idx);
+ wmb();
+ vga_outb(par, CRT_D, val);
+ wmb();
+}
+
+static inline u8 crt_inb(struct tdfx_par *par, u32 idx)
+{
+ vga_outb(par, CRT_I, idx);
+ mb();
+ return vga_inb(par, CRT_D);
+}
+
+static inline void att_outb(struct tdfx_par *par, u32 idx, u8 val)
+{
+ unsigned char tmp;
+
+ tmp = vga_inb(par, IS1_R);
+ vga_outb(par, ATT_IW, idx);
+ vga_outb(par, ATT_IW, val);
+}
+
+static inline void vga_disable_video(struct tdfx_par *par)
+{
+ unsigned char s;
+
+ s = seq_inb(par, 0x01) | 0x20;
+ seq_outb(par, 0x00, 0x01);
+ seq_outb(par, 0x01, s);
+ seq_outb(par, 0x00, 0x03);
+}
+
+static inline void vga_enable_video(struct tdfx_par *par)
+{
+ unsigned char s;
+
+ s = seq_inb(par, 0x01) & 0xdf;
+ seq_outb(par, 0x00, 0x01);
+ seq_outb(par, 0x01, s);
+ seq_outb(par, 0x00, 0x03);
+}
+
+static inline void vga_enable_palette(struct tdfx_par *par)
+{
+ vga_inb(par, IS1_R);
+ mb();
+ vga_outb(par, ATT_IW, 0x20);
+}
+
+static inline u32 tdfx_inl(struct tdfx_par *par, unsigned int reg)
+{
+ return readl(par->regbase_virt + reg);
+}
+
+static inline void tdfx_outl(struct tdfx_par *par, unsigned int reg, u32 val)
+{
+ writel(val, par->regbase_virt + reg);
+}
+
+static inline void banshee_make_room(struct tdfx_par *par, int size)
+{
+ /* Note: The Voodoo3's onboard FIFO has 32 slots. This loop
+ * won't quit if you ask for more. */
+ while ((tdfx_inl(par, STATUS) & 0x1f) < size - 1)
+ cpu_relax();
+}
+
+static int banshee_wait_idle(struct fb_info *info)
+{
+ struct tdfx_par *par = info->par;
+ int i = 0;
+
+ banshee_make_room(par, 1);
+ tdfx_outl(par, COMMAND_3D, COMMAND_3D_NOP);
+
+ do {
+ if ((tdfx_inl(par, STATUS) & STATUS_BUSY) == 0)
+ i++;
+ } while (i < 3);
+
+ return 0;
+}
+
+/*
+ * Set the color of a palette entry in 8bpp mode
+ */
+static inline void do_setpalentry(struct tdfx_par *par, unsigned regno, u32 c)
+{
+ banshee_make_room(par, 2);
+ tdfx_outl(par, DACADDR, regno);
+ /* read after write makes it working */
+ tdfx_inl(par, DACADDR);
+ tdfx_outl(par, DACDATA, c);
+}
+
+static u32 do_calc_pll(int freq, int *freq_out)
+{
+ int m, n, k, best_m, best_n, best_k, best_error;
+ int fref = 14318;
+
+ best_error = freq;
+ best_n = best_m = best_k = 0;
+
+ for (k = 3; k >= 0; k--) {
+ for (m = 63; m >= 0; m--) {
+ /*
+ * Estimate value of n that produces target frequency
+ * with current m and k
+ */
+ int n_estimated = ((freq * (m + 2) << k) / fref) - 2;
+
+ /* Search neighborhood of estimated n */
+ for (n = max(0, n_estimated);
+ n <= min(255, n_estimated + 1);
+ n++) {
+ /*
+ * Calculate PLL freqency with current m, k and
+ * estimated n
+ */
+ int f = (fref * (n + 2) / (m + 2)) >> k;
+ int error = abs(f - freq);
+
+ /*
+ * If this is the closest we've come to the
+ * target frequency then remember n, m and k
+ */
+ if (error < best_error) {
+ best_error = error;
+ best_n = n;
+ best_m = m;
+ best_k = k;
+ }
+ }
+ }
+ }
+
+ n = best_n;
+ m = best_m;
+ k = best_k;
+ *freq_out = (fref * (n + 2) / (m + 2)) >> k;
+
+ return (n << 8) | (m << 2) | k;
+}
+
+static void do_write_regs(struct fb_info *info, struct banshee_reg *reg)
+{
+ struct tdfx_par *par = info->par;
+ int i;
+
+ banshee_wait_idle(info);
+
+ tdfx_outl(par, MISCINIT1, tdfx_inl(par, MISCINIT1) | 0x01);
+
+ crt_outb(par, 0x11, crt_inb(par, 0x11) & 0x7f); /* CRT unprotect */
+
+ banshee_make_room(par, 3);
+ tdfx_outl(par, VGAINIT1, reg->vgainit1 & 0x001FFFFF);
+ tdfx_outl(par, VIDPROCCFG, reg->vidcfg & ~0x00000001);
+#if 0
+ tdfx_outl(par, PLLCTRL1, reg->mempll);
+ tdfx_outl(par, PLLCTRL2, reg->gfxpll);
+#endif
+ tdfx_outl(par, PLLCTRL0, reg->vidpll);
+
+ vga_outb(par, MISC_W, reg->misc[0x00] | 0x01);
+
+ for (i = 0; i < 5; i++)
+ seq_outb(par, i, reg->seq[i]);
+
+ for (i = 0; i < 25; i++)
+ crt_outb(par, i, reg->crt[i]);
+
+ for (i = 0; i < 9; i++)
+ gra_outb(par, i, reg->gra[i]);
+
+ for (i = 0; i < 21; i++)
+ att_outb(par, i, reg->att[i]);
+
+ crt_outb(par, 0x1a, reg->ext[0]);
+ crt_outb(par, 0x1b, reg->ext[1]);
+
+ vga_enable_palette(par);
+ vga_enable_video(par);
+
+ banshee_make_room(par, 9);
+ tdfx_outl(par, VGAINIT0, reg->vgainit0);
+ tdfx_outl(par, DACMODE, reg->dacmode);
+ tdfx_outl(par, VIDDESKSTRIDE, reg->stride);
+ tdfx_outl(par, HWCURPATADDR, reg->curspataddr);
+
+ tdfx_outl(par, VIDSCREENSIZE, reg->screensize);
+ tdfx_outl(par, VIDDESKSTART, reg->startaddr);
+ tdfx_outl(par, VIDPROCCFG, reg->vidcfg);
+ tdfx_outl(par, VGAINIT1, reg->vgainit1);
+ tdfx_outl(par, MISCINIT0, reg->miscinit0);
+
+ banshee_make_room(par, 8);
+ tdfx_outl(par, SRCBASE, reg->startaddr);
+ tdfx_outl(par, DSTBASE, reg->startaddr);
+ tdfx_outl(par, COMMANDEXTRA_2D, 0);
+ tdfx_outl(par, CLIP0MIN, 0);
+ tdfx_outl(par, CLIP0MAX, 0x0fff0fff);
+ tdfx_outl(par, CLIP1MIN, 0);
+ tdfx_outl(par, CLIP1MAX, 0x0fff0fff);
+ tdfx_outl(par, SRCXY, 0);
+
+ banshee_wait_idle(info);
+}
+
+static unsigned long do_lfb_size(struct tdfx_par *par, unsigned short dev_id)
+{
+ u32 draminit0 = tdfx_inl(par, DRAMINIT0);
+ u32 draminit1 = tdfx_inl(par, DRAMINIT1);
+ u32 miscinit1;
+ int num_chips = (draminit0 & DRAMINIT0_SGRAM_NUM) ? 8 : 4;
+ int chip_size; /* in MB */
+ int has_sgram = draminit1 & DRAMINIT1_MEM_SDRAM;
+
+ if (dev_id < PCI_DEVICE_ID_3DFX_VOODOO5) {
+ /* Banshee/Voodoo3 */
+ chip_size = 2;
+ if (has_sgram && !(draminit0 & DRAMINIT0_SGRAM_TYPE))
+ chip_size = 1;
+ } else {
+ /* Voodoo4/5 */
+ has_sgram = 0;
+ chip_size = draminit0 & DRAMINIT0_SGRAM_TYPE_MASK;
+ chip_size = 1 << (chip_size >> DRAMINIT0_SGRAM_TYPE_SHIFT);
+ }
+
+ /* disable block writes for SDRAM */
+ miscinit1 = tdfx_inl(par, MISCINIT1);
+ miscinit1 |= has_sgram ? 0 : MISCINIT1_2DBLOCK_DIS;
+ miscinit1 |= MISCINIT1_CLUT_INV;
+
+ banshee_make_room(par, 1);
+ tdfx_outl(par, MISCINIT1, miscinit1);
+ return num_chips * chip_size * 1024l * 1024;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int tdfxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct tdfx_par *par = info->par;
+ u32 lpitch;
+
+ if (var->bits_per_pixel != 8 && var->bits_per_pixel != 16 &&
+ var->bits_per_pixel != 24 && var->bits_per_pixel != 32) {
+ DPRINTK("depth not supported: %u\n", var->bits_per_pixel);
+ return -EINVAL;
+ }
+
+ if (var->xres != var->xres_virtual)
+ var->xres_virtual = var->xres;
+
+ if (var->yres > var->yres_virtual)
+ var->yres_virtual = var->yres;
+
+ if (var->xoffset) {
+ DPRINTK("xoffset not supported\n");
+ return -EINVAL;
+ }
+ var->yoffset = 0;
+
+ /*
+ * Banshee doesn't support interlace, but Voodoo4/5 and probably
+ * Voodoo3 do.
+ * no direct information about device id now?
+ * use max_pixclock for this...
+ */
+ if (((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) &&
+ (par->max_pixclock < VOODOO3_MAX_PIXCLOCK)) {
+ DPRINTK("interlace not supported\n");
+ return -EINVAL;
+ }
+
+ if (info->monspecs.hfmax && info->monspecs.vfmax &&
+ info->monspecs.dclkmax && fb_validate_mode(var, info) < 0) {
+ DPRINTK("mode outside monitor's specs\n");
+ return -EINVAL;
+ }
+
+ var->xres = (var->xres + 15) & ~15; /* could sometimes be 8 */
+ lpitch = var->xres * ((var->bits_per_pixel + 7) >> 3);
+
+ if (var->xres < 320 || var->xres > 2048) {
+ DPRINTK("width not supported: %u\n", var->xres);
+ return -EINVAL;
+ }
+
+ if (var->yres < 200 || var->yres > 2048) {
+ DPRINTK("height not supported: %u\n", var->yres);
+ return -EINVAL;
+ }
+
+ if (lpitch * var->yres_virtual > info->fix.smem_len) {
+ var->yres_virtual = info->fix.smem_len / lpitch;
+ if (var->yres_virtual < var->yres) {
+ DPRINTK("no memory for screen (%ux%ux%u)\n",
+ var->xres, var->yres_virtual,
+ var->bits_per_pixel);
+ return -EINVAL;
+ }
+ }
+
+ if (PICOS2KHZ(var->pixclock) > par->max_pixclock) {
+ DPRINTK("pixclock too high (%ldKHz)\n",
+ PICOS2KHZ(var->pixclock));
+ return -EINVAL;
+ }
+
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ switch (var->bits_per_pixel) {
+ case 8:
+ var->red.length = 8;
+ var->red.offset = 0;
+ var->green = var->red;
+ var->blue = var->red;
+ break;
+ case 16:
+ 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 32:
+ var->transp.offset = 24;
+ var->transp.length = 8;
+ case 24:
+ var->red.offset = 16;
+ var->green.offset = 8;
+ var->blue.offset = 0;
+ var->red.length = var->green.length = var->blue.length = 8;
+ break;
+ }
+ var->width = -1;
+ var->height = -1;
+
+ var->accel_flags = FB_ACCELF_TEXT;
+
+ DPRINTK("Checking graphics mode at %dx%d depth %d\n",
+ var->xres, var->yres, var->bits_per_pixel);
+ return 0;
+}
+
+static int tdfxfb_set_par(struct fb_info *info)
+{
+ struct tdfx_par *par = info->par;
+ u32 hdispend = info->var.xres;
+ u32 hsyncsta = hdispend + info->var.right_margin;
+ u32 hsyncend = hsyncsta + info->var.hsync_len;
+ u32 htotal = hsyncend + info->var.left_margin;
+ u32 hd, hs, he, ht, hbs, hbe;
+ u32 vd, vs, ve, vt, vbs, vbe;
+ struct banshee_reg reg;
+ int fout, freq;
+ u32 wd;
+ u32 cpp = (info->var.bits_per_pixel + 7) >> 3;
+
+ memset(&reg, 0, sizeof(reg));
+
+ reg.vidcfg = VIDCFG_VIDPROC_ENABLE | VIDCFG_DESK_ENABLE |
+ VIDCFG_CURS_X11 |
+ ((cpp - 1) << VIDCFG_PIXFMT_SHIFT) |
+ (cpp != 1 ? VIDCFG_CLUT_BYPASS : 0);
+
+ /* PLL settings */
+ freq = PICOS2KHZ(info->var.pixclock);
+
+ reg.vidcfg &= ~VIDCFG_2X;
+
+ if (freq > par->max_pixclock / 2) {
+ freq = freq > par->max_pixclock ? par->max_pixclock : freq;
+ reg.dacmode |= DACMODE_2X;
+ reg.vidcfg |= VIDCFG_2X;
+ hdispend >>= 1;
+ hsyncsta >>= 1;
+ hsyncend >>= 1;
+ htotal >>= 1;
+ }
+
+ wd = (hdispend >> 3) - 1;
+ hd = wd;
+ hs = (hsyncsta >> 3) - 1;
+ he = (hsyncend >> 3) - 1;
+ ht = (htotal >> 3) - 1;
+ hbs = hd;
+ hbe = ht;
+
+ if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
+ vd = (info->var.yres << 1) - 1;
+ vs = vd + (info->var.lower_margin << 1);
+ ve = vs + (info->var.vsync_len << 1);
+ vt = ve + (info->var.upper_margin << 1) - 1;
+ reg.screensize = info->var.xres | (info->var.yres << 13);
+ reg.vidcfg |= VIDCFG_HALF_MODE;
+ reg.crt[0x09] = 0x80;
+ } else {
+ vd = info->var.yres - 1;
+ vs = vd + info->var.lower_margin;
+ ve = vs + info->var.vsync_len;
+ vt = ve + info->var.upper_margin - 1;
+ reg.screensize = info->var.xres | (info->var.yres << 12);
+ reg.vidcfg &= ~VIDCFG_HALF_MODE;
+ }
+ vbs = vd;
+ vbe = vt;
+
+ /* this is all pretty standard VGA register stuffing */
+ reg.misc[0x00] = 0x0f |
+ (info->var.xres < 400 ? 0xa0 :
+ info->var.xres < 480 ? 0x60 :
+ info->var.xres < 768 ? 0xe0 : 0x20);
+
+ reg.gra[0x05] = 0x40;
+ reg.gra[0x06] = 0x05;
+ reg.gra[0x07] = 0x0f;
+ reg.gra[0x08] = 0xff;
+
+ reg.att[0x00] = 0x00;
+ reg.att[0x01] = 0x01;
+ reg.att[0x02] = 0x02;
+ reg.att[0x03] = 0x03;
+ reg.att[0x04] = 0x04;
+ reg.att[0x05] = 0x05;
+ reg.att[0x06] = 0x06;
+ reg.att[0x07] = 0x07;
+ reg.att[0x08] = 0x08;
+ reg.att[0x09] = 0x09;
+ reg.att[0x0a] = 0x0a;
+ reg.att[0x0b] = 0x0b;
+ reg.att[0x0c] = 0x0c;
+ reg.att[0x0d] = 0x0d;
+ reg.att[0x0e] = 0x0e;
+ reg.att[0x0f] = 0x0f;
+ reg.att[0x10] = 0x41;
+ reg.att[0x12] = 0x0f;
+
+ reg.seq[0x00] = 0x03;
+ reg.seq[0x01] = 0x01; /* fixme: clkdiv2? */
+ reg.seq[0x02] = 0x0f;
+ reg.seq[0x03] = 0x00;
+ reg.seq[0x04] = 0x0e;
+
+ reg.crt[0x00] = ht - 4;
+ reg.crt[0x01] = hd;
+ reg.crt[0x02] = hbs;
+ reg.crt[0x03] = 0x80 | (hbe & 0x1f);
+ reg.crt[0x04] = hs;
+ reg.crt[0x05] = ((hbe & 0x20) << 2) | (he & 0x1f);
+ reg.crt[0x06] = vt;
+ reg.crt[0x07] = ((vs & 0x200) >> 2) |
+ ((vd & 0x200) >> 3) |
+ ((vt & 0x200) >> 4) | 0x10 |
+ ((vbs & 0x100) >> 5) |
+ ((vs & 0x100) >> 6) |
+ ((vd & 0x100) >> 7) |
+ ((vt & 0x100) >> 8);
+ reg.crt[0x09] |= 0x40 | ((vbs & 0x200) >> 4);
+ reg.crt[0x10] = vs;
+ reg.crt[0x11] = (ve & 0x0f) | 0x20;
+ reg.crt[0x12] = vd;
+ reg.crt[0x13] = wd;
+ reg.crt[0x15] = vbs;
+ reg.crt[0x16] = vbe + 1;
+ reg.crt[0x17] = 0xc3;
+ reg.crt[0x18] = 0xff;
+
+ /* Banshee's nonvga stuff */
+ reg.ext[0x00] = (((ht & 0x100) >> 8) |
+ ((hd & 0x100) >> 6) |
+ ((hbs & 0x100) >> 4) |
+ ((hbe & 0x40) >> 1) |
+ ((hs & 0x100) >> 2) |
+ ((he & 0x20) << 2));
+ reg.ext[0x01] = (((vt & 0x400) >> 10) |
+ ((vd & 0x400) >> 8) |
+ ((vbs & 0x400) >> 6) |
+ ((vbe & 0x400) >> 4));
+
+ reg.vgainit0 = VGAINIT0_8BIT_DAC |
+ VGAINIT0_EXT_ENABLE |
+ VGAINIT0_WAKEUP_3C3 |
+ VGAINIT0_ALT_READBACK |
+ VGAINIT0_EXTSHIFTOUT;
+ reg.vgainit1 = tdfx_inl(par, VGAINIT1) & 0x1fffff;
+
+ if (hwcursor)
+ reg.curspataddr = info->fix.smem_len;
+
+ reg.cursloc = 0;
+
+ reg.cursc0 = 0;
+ reg.cursc1 = 0xffffff;
+
+ reg.stride = info->var.xres * cpp;
+ reg.startaddr = info->var.yoffset * reg.stride
+ + info->var.xoffset * cpp;
+
+ reg.vidpll = do_calc_pll(freq, &fout);
+#if 0
+ reg.mempll = do_calc_pll(..., &fout);
+ reg.gfxpll = do_calc_pll(..., &fout);
+#endif
+
+ if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
+ reg.vidcfg |= VIDCFG_INTERLACE;
+ reg.miscinit0 = tdfx_inl(par, MISCINIT0);
+
+#if defined(__BIG_ENDIAN)
+ switch (info->var.bits_per_pixel) {
+ case 8:
+ case 24:
+ reg.miscinit0 &= ~(1 << 30);
+ reg.miscinit0 &= ~(1 << 31);
+ break;
+ case 16:
+ reg.miscinit0 |= (1 << 30);
+ reg.miscinit0 |= (1 << 31);
+ break;
+ case 32:
+ reg.miscinit0 |= (1 << 30);
+ reg.miscinit0 &= ~(1 << 31);
+ break;
+ }
+#endif
+ do_write_regs(info, &reg);
+
+ /* Now change fb_fix_screeninfo according to changes in par */
+ info->fix.line_length = reg.stride;
+ info->fix.visual = (info->var.bits_per_pixel == 8)
+ ? FB_VISUAL_PSEUDOCOLOR
+ : FB_VISUAL_TRUECOLOR;
+ DPRINTK("Graphics mode is now set at %dx%d depth %d\n",
+ info->var.xres, info->var.yres, info->var.bits_per_pixel);
+ return 0;
+}
+
+/* A handy macro shamelessly pinched from matroxfb */
+#define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF - (val)) >> 16)
+
+static int tdfxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct fb_info *info)
+{
+ struct tdfx_par *par = info->par;
+ u32 rgbcol;
+
+ if (regno >= info->cmap.len || regno > 255)
+ return 1;
+
+ /* grayscale works only partially under directcolor */
+ if (info->var.grayscale) {
+ /* grayscale = 0.30*R + 0.59*G + 0.11*B */
+ blue = (red * 77 + green * 151 + blue * 28) >> 8;
+ green = blue;
+ red = blue;
+ }
+
+ switch (info->fix.visual) {
+ case FB_VISUAL_PSEUDOCOLOR:
+ rgbcol = (((u32)red & 0xff00) << 8) |
+ (((u32)green & 0xff00) << 0) |
+ (((u32)blue & 0xff00) >> 8);
+ do_setpalentry(par, regno, rgbcol);
+ break;
+ /* Truecolor has no hardware color palettes. */
+ case FB_VISUAL_TRUECOLOR:
+ if (regno < 16) {
+ rgbcol = (CNVT_TOHW(red, info->var.red.length) <<
+ info->var.red.offset) |
+ (CNVT_TOHW(green, info->var.green.length) <<
+ info->var.green.offset) |
+ (CNVT_TOHW(blue, info->var.blue.length) <<
+ info->var.blue.offset) |
+ (CNVT_TOHW(transp, info->var.transp.length) <<
+ info->var.transp.offset);
+ par->palette[regno] = rgbcol;
+ }
+
+ break;
+ default:
+ DPRINTK("bad depth %u\n", info->var.bits_per_pixel);
+ break;
+ }
+
+ return 0;
+}
+
+/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
+static int tdfxfb_blank(int blank, struct fb_info *info)
+{
+ struct tdfx_par *par = info->par;
+ int vgablank = 1;
+ u32 dacmode = tdfx_inl(par, DACMODE);
+
+ dacmode &= ~(BIT(1) | BIT(3));
+
+ switch (blank) {
+ case FB_BLANK_UNBLANK: /* Screen: On; HSync: On, VSync: On */
+ vgablank = 0;
+ break;
+ case FB_BLANK_NORMAL: /* Screen: Off; HSync: On, VSync: On */
+ break;
+ case FB_BLANK_VSYNC_SUSPEND: /* Screen: Off; HSync: On, VSync: Off */
+ dacmode |= BIT(3);
+ break;
+ case FB_BLANK_HSYNC_SUSPEND: /* Screen: Off; HSync: Off, VSync: On */
+ dacmode |= BIT(1);
+ break;
+ case FB_BLANK_POWERDOWN: /* Screen: Off; HSync: Off, VSync: Off */
+ dacmode |= BIT(1) | BIT(3);
+ break;
+ }
+
+ banshee_make_room(par, 1);
+ tdfx_outl(par, DACMODE, dacmode);
+ if (vgablank)
+ vga_disable_video(par);
+ else
+ vga_enable_video(par);
+ return 0;
+}
+
+/*
+ * Set the starting position of the visible screen to var->yoffset
+ */
+static int tdfxfb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ struct tdfx_par *par = info->par;
+ u32 addr = var->yoffset * info->fix.line_length;
+
+ if (nopan || var->xoffset)
+ return -EINVAL;
+
+ banshee_make_room(par, 1);
+ tdfx_outl(par, VIDDESKSTART, addr);
+
+ return 0;
+}
+
+#ifdef CONFIG_FB_3DFX_ACCEL
+/*
+ * FillRect 2D command (solidfill or invert (via ROP_XOR))
+ */
+static void tdfxfb_fillrect(struct fb_info *info,
+ const struct fb_fillrect *rect)
+{
+ struct tdfx_par *par = info->par;
+ u32 bpp = info->var.bits_per_pixel;
+ u32 stride = info->fix.line_length;
+ u32 fmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
+ int tdfx_rop;
+ u32 dx = rect->dx;
+ u32 dy = rect->dy;
+ u32 dstbase = 0;
+
+ if (rect->rop == ROP_COPY)
+ tdfx_rop = TDFX_ROP_COPY;
+ else
+ tdfx_rop = TDFX_ROP_XOR;
+
+ /* assume always rect->height < 4096 */
+ if (dy + rect->height > 4095) {
+ dstbase = stride * dy;
+ dy = 0;
+ }
+ /* assume always rect->width < 4096 */
+ if (dx + rect->width > 4095) {
+ dstbase += dx * bpp >> 3;
+ dx = 0;
+ }
+ banshee_make_room(par, 6);
+ tdfx_outl(par, DSTFORMAT, fmt);
+ if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
+ tdfx_outl(par, COLORFORE, rect->color);
+ } else { /* FB_VISUAL_TRUECOLOR */
+ tdfx_outl(par, COLORFORE, par->palette[rect->color]);
+ }
+ tdfx_outl(par, COMMAND_2D, COMMAND_2D_FILLRECT | (tdfx_rop << 24));
+ tdfx_outl(par, DSTBASE, dstbase);
+ tdfx_outl(par, DSTSIZE, rect->width | (rect->height << 16));
+ tdfx_outl(par, LAUNCH_2D, dx | (dy << 16));
+}
+
+/*
+ * Screen-to-Screen BitBlt 2D command (for the bmove fb op.)
+ */
+static void tdfxfb_copyarea(struct fb_info *info,
+ const struct fb_copyarea *area)
+{
+ struct tdfx_par *par = info->par;
+ u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
+ u32 bpp = info->var.bits_per_pixel;
+ u32 stride = info->fix.line_length;
+ u32 blitcmd = COMMAND_2D_S2S_BITBLT | (TDFX_ROP_COPY << 24);
+ u32 fmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
+ u32 dstbase = 0;
+ u32 srcbase = 0;
+
+ /* assume always area->height < 4096 */
+ if (sy + area->height > 4095) {
+ srcbase = stride * sy;
+ sy = 0;
+ }
+ /* assume always area->width < 4096 */
+ if (sx + area->width > 4095) {
+ srcbase += sx * bpp >> 3;
+ sx = 0;
+ }
+ /* assume always area->height < 4096 */
+ if (dy + area->height > 4095) {
+ dstbase = stride * dy;
+ dy = 0;
+ }
+ /* assume always area->width < 4096 */
+ if (dx + area->width > 4095) {
+ dstbase += dx * bpp >> 3;
+ dx = 0;
+ }
+
+ if (area->sx <= area->dx) {
+ /* -X */
+ blitcmd |= BIT(14);
+ sx += area->width - 1;
+ dx += area->width - 1;
+ }
+ if (area->sy <= area->dy) {
+ /* -Y */
+ blitcmd |= BIT(15);
+ sy += area->height - 1;
+ dy += area->height - 1;
+ }
+
+ banshee_make_room(par, 8);
+
+ tdfx_outl(par, SRCFORMAT, fmt);
+ tdfx_outl(par, DSTFORMAT, fmt);
+ tdfx_outl(par, COMMAND_2D, blitcmd);
+ tdfx_outl(par, DSTSIZE, area->width | (area->height << 16));
+ tdfx_outl(par, DSTXY, dx | (dy << 16));
+ tdfx_outl(par, SRCBASE, srcbase);
+ tdfx_outl(par, DSTBASE, dstbase);
+ tdfx_outl(par, LAUNCH_2D, sx | (sy << 16));
+}
+
+static void tdfxfb_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+ struct tdfx_par *par = info->par;
+ int size = image->height * ((image->width * image->depth + 7) >> 3);
+ int fifo_free;
+ int i, stride = info->fix.line_length;
+ u32 bpp = info->var.bits_per_pixel;
+ u32 dstfmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
+ u8 *chardata = (u8 *) image->data;
+ u32 srcfmt;
+ u32 dx = image->dx;
+ u32 dy = image->dy;
+ u32 dstbase = 0;
+
+ if (image->depth != 1) {
+#ifdef BROKEN_CODE
+ banshee_make_room(par, 6 + ((size + 3) >> 2));
+ srcfmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13) |
+ 0x400000;
+#else
+ cfb_imageblit(info, image);
+#endif
+ return;
+ }
+ banshee_make_room(par, 9);
+ switch (info->fix.visual) {
+ case FB_VISUAL_PSEUDOCOLOR:
+ tdfx_outl(par, COLORFORE, image->fg_color);
+ tdfx_outl(par, COLORBACK, image->bg_color);
+ break;
+ case FB_VISUAL_TRUECOLOR:
+ default:
+ tdfx_outl(par, COLORFORE,
+ par->palette[image->fg_color]);
+ tdfx_outl(par, COLORBACK,
+ par->palette[image->bg_color]);
+ }
+#ifdef __BIG_ENDIAN
+ srcfmt = 0x400000 | BIT(20);
+#else
+ srcfmt = 0x400000;
+#endif
+ /* assume always image->height < 4096 */
+ if (dy + image->height > 4095) {
+ dstbase = stride * dy;
+ dy = 0;
+ }
+ /* assume always image->width < 4096 */
+ if (dx + image->width > 4095) {
+ dstbase += dx * bpp >> 3;
+ dx = 0;
+ }
+
+ tdfx_outl(par, DSTBASE, dstbase);
+ tdfx_outl(par, SRCXY, 0);
+ tdfx_outl(par, DSTXY, dx | (dy << 16));
+ tdfx_outl(par, COMMAND_2D,
+ COMMAND_2D_H2S_BITBLT | (TDFX_ROP_COPY << 24));
+ tdfx_outl(par, SRCFORMAT, srcfmt);
+ tdfx_outl(par, DSTFORMAT, dstfmt);
+ tdfx_outl(par, DSTSIZE, image->width | (image->height << 16));
+
+ /* A count of how many free FIFO entries we've requested.
+ * When this goes negative, we need to request more. */
+ fifo_free = 0;
+
+ /* Send four bytes at a time of data */
+ for (i = (size >> 2); i > 0; i--) {
+ if (--fifo_free < 0) {
+ fifo_free = 31;
+ banshee_make_room(par, fifo_free);
+ }
+ tdfx_outl(par, LAUNCH_2D, *(u32 *)chardata);
+ chardata += 4;
+ }
+
+ /* Send the leftovers now */
+ banshee_make_room(par, 3);
+ switch (size % 4) {
+ case 0:
+ break;
+ case 1:
+ tdfx_outl(par, LAUNCH_2D, *chardata);
+ break;
+ case 2:
+ tdfx_outl(par, LAUNCH_2D, *(u16 *)chardata);
+ break;
+ case 3:
+ tdfx_outl(par, LAUNCH_2D,
+ *(u16 *)chardata | (chardata[3] << 24));
+ break;
+ }
+}
+#endif /* CONFIG_FB_3DFX_ACCEL */
+
+static int tdfxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
+{
+ struct tdfx_par *par = info->par;
+ u32 vidcfg;
+
+ if (!hwcursor)
+ return -EINVAL; /* just to force soft_cursor() call */
+
+ /* Too large of a cursor or wrong bpp :-( */
+ if (cursor->image.width > 64 ||
+ cursor->image.height > 64 ||
+ cursor->image.depth > 1)
+ return -EINVAL;
+
+ vidcfg = tdfx_inl(par, VIDPROCCFG);
+ if (cursor->enable)
+ tdfx_outl(par, VIDPROCCFG, vidcfg | VIDCFG_HWCURSOR_ENABLE);
+ else
+ tdfx_outl(par, VIDPROCCFG, vidcfg & ~VIDCFG_HWCURSOR_ENABLE);
+
+ /*
+ * If the cursor is not be changed this means either we want the
+ * current cursor state (if enable is set) or we want to query what
+ * we can do with the cursor (if enable is not set)
+ */
+ if (!cursor->set)
+ return 0;
+
+ /* fix cursor color - XFree86 forgets to restore it properly */
+ if (cursor->set & FB_CUR_SETCMAP) {
+ struct fb_cmap cmap = info->cmap;
+ u32 bg_idx = cursor->image.bg_color;
+ u32 fg_idx = cursor->image.fg_color;
+ unsigned long bg_color, fg_color;
+
+ fg_color = (((u32)cmap.red[fg_idx] & 0xff00) << 8) |
+ (((u32)cmap.green[fg_idx] & 0xff00) << 0) |
+ (((u32)cmap.blue[fg_idx] & 0xff00) >> 8);
+ bg_color = (((u32)cmap.red[bg_idx] & 0xff00) << 8) |
+ (((u32)cmap.green[bg_idx] & 0xff00) << 0) |
+ (((u32)cmap.blue[bg_idx] & 0xff00) >> 8);
+ banshee_make_room(par, 2);
+ tdfx_outl(par, HWCURC0, bg_color);
+ tdfx_outl(par, HWCURC1, fg_color);
+ }
+
+ if (cursor->set & FB_CUR_SETPOS) {
+ int x = cursor->image.dx;
+ int y = cursor->image.dy - info->var.yoffset;
+
+ x += 63;
+ y += 63;
+ banshee_make_room(par, 1);
+ tdfx_outl(par, HWCURLOC, (y << 16) + x);
+ }
+ if (cursor->set & (FB_CUR_SETIMAGE | FB_CUR_SETSHAPE)) {
+ /*
+ * Voodoo 3 and above cards use 2 monochrome cursor patterns.
+ * The reason is so the card can fetch 8 words at a time
+ * and are stored on chip for use for the next 8 scanlines.
+ * This reduces the number of times for access to draw the
+ * cursor for each screen refresh.
+ * Each pattern is a bitmap of 64 bit wide and 64 bit high
+ * (total of 8192 bits or 1024 bytes). The two patterns are
+ * stored in such a way that pattern 0 always resides in the
+ * lower half (least significant 64 bits) of a 128 bit word
+ * and pattern 1 the upper half. If you examine the data of
+ * the cursor image the graphics card uses then from the
+ * beginning you see line one of pattern 0, line one of
+ * pattern 1, line two of pattern 0, line two of pattern 1,
+ * etc etc. The linear stride for the cursor is always 16 bytes
+ * (128 bits) which is the maximum cursor width times two for
+ * the two monochrome patterns.
+ */
+ u8 __iomem *cursorbase = info->screen_base + info->fix.smem_len;
+ u8 *bitmap = (u8 *)cursor->image.data;
+ u8 *mask = (u8 *)cursor->mask;
+ int i;
+
+ fb_memset(cursorbase, 0, 1024);
+
+ for (i = 0; i < cursor->image.height; i++) {
+ int h = 0;
+ int j = (cursor->image.width + 7) >> 3;
+
+ for (; j > 0; j--) {
+ u8 data = *mask ^ *bitmap;
+ if (cursor->rop == ROP_COPY)
+ data = *mask & *bitmap;
+ /* Pattern 0. Copy the cursor mask to it */
+ fb_writeb(*mask, cursorbase + h);
+ mask++;
+ /* Pattern 1. Copy the cursor bitmap to it */
+ fb_writeb(data, cursorbase + h + 8);
+ bitmap++;
+ h++;
+ }
+ cursorbase += 16;
+ }
+ }
+ return 0;
+}
+
+static struct fb_ops tdfxfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = tdfxfb_check_var,
+ .fb_set_par = tdfxfb_set_par,
+ .fb_setcolreg = tdfxfb_setcolreg,
+ .fb_blank = tdfxfb_blank,
+ .fb_pan_display = tdfxfb_pan_display,
+ .fb_sync = banshee_wait_idle,
+ .fb_cursor = tdfxfb_cursor,
+#ifdef CONFIG_FB_3DFX_ACCEL
+ .fb_fillrect = tdfxfb_fillrect,
+ .fb_copyarea = tdfxfb_copyarea,
+ .fb_imageblit = tdfxfb_imageblit,
+#else
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+#endif
+};
+
+#ifdef CONFIG_FB_3DFX_I2C
+/* The voo GPIO registers don't have individual masks for each bit
+ so we always have to read before writing. */
+
+static void tdfxfb_i2c_setscl(void *data, int val)
+{
+ struct tdfxfb_i2c_chan *chan = data;
+ struct tdfx_par *par = chan->par;
+ unsigned int r;
+
+ r = tdfx_inl(par, VIDSERPARPORT);
+ if (val)
+ r |= I2C_SCL_OUT;
+ else
+ r &= ~I2C_SCL_OUT;
+ tdfx_outl(par, VIDSERPARPORT, r);
+ tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
+}
+
+static void tdfxfb_i2c_setsda(void *data, int val)
+{
+ struct tdfxfb_i2c_chan *chan = data;
+ struct tdfx_par *par = chan->par;
+ unsigned int r;
+
+ r = tdfx_inl(par, VIDSERPARPORT);
+ if (val)
+ r |= I2C_SDA_OUT;
+ else
+ r &= ~I2C_SDA_OUT;
+ tdfx_outl(par, VIDSERPARPORT, r);
+ tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
+}
+
+/* The GPIO pins are open drain, so the pins always remain outputs.
+ We rely on the i2c-algo-bit routines to set the pins high before
+ reading the input from other chips. */
+
+static int tdfxfb_i2c_getscl(void *data)
+{
+ struct tdfxfb_i2c_chan *chan = data;
+ struct tdfx_par *par = chan->par;
+
+ return (0 != (tdfx_inl(par, VIDSERPARPORT) & I2C_SCL_IN));
+}
+
+static int tdfxfb_i2c_getsda(void *data)
+{
+ struct tdfxfb_i2c_chan *chan = data;
+ struct tdfx_par *par = chan->par;
+
+ return (0 != (tdfx_inl(par, VIDSERPARPORT) & I2C_SDA_IN));
+}
+
+static void tdfxfb_ddc_setscl(void *data, int val)
+{
+ struct tdfxfb_i2c_chan *chan = data;
+ struct tdfx_par *par = chan->par;
+ unsigned int r;
+
+ r = tdfx_inl(par, VIDSERPARPORT);
+ if (val)
+ r |= DDC_SCL_OUT;
+ else
+ r &= ~DDC_SCL_OUT;
+ tdfx_outl(par, VIDSERPARPORT, r);
+ tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
+}
+
+static void tdfxfb_ddc_setsda(void *data, int val)
+{
+ struct tdfxfb_i2c_chan *chan = data;
+ struct tdfx_par *par = chan->par;
+ unsigned int r;
+
+ r = tdfx_inl(par, VIDSERPARPORT);
+ if (val)
+ r |= DDC_SDA_OUT;
+ else
+ r &= ~DDC_SDA_OUT;
+ tdfx_outl(par, VIDSERPARPORT, r);
+ tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
+}
+
+static int tdfxfb_ddc_getscl(void *data)
+{
+ struct tdfxfb_i2c_chan *chan = data;
+ struct tdfx_par *par = chan->par;
+
+ return (0 != (tdfx_inl(par, VIDSERPARPORT) & DDC_SCL_IN));
+}
+
+static int tdfxfb_ddc_getsda(void *data)
+{
+ struct tdfxfb_i2c_chan *chan = data;
+ struct tdfx_par *par = chan->par;
+
+ return (0 != (tdfx_inl(par, VIDSERPARPORT) & DDC_SDA_IN));
+}
+
+static int tdfxfb_setup_ddc_bus(struct tdfxfb_i2c_chan *chan, const char *name,
+ struct device *dev)
+{
+ int rc;
+
+ strlcpy(chan->adapter.name, name, sizeof(chan->adapter.name));
+ chan->adapter.owner = THIS_MODULE;
+ chan->adapter.class = I2C_CLASS_DDC;
+ chan->adapter.algo_data = &chan->algo;
+ chan->adapter.dev.parent = dev;
+ chan->algo.setsda = tdfxfb_ddc_setsda;
+ chan->algo.setscl = tdfxfb_ddc_setscl;
+ chan->algo.getsda = tdfxfb_ddc_getsda;
+ chan->algo.getscl = tdfxfb_ddc_getscl;
+ chan->algo.udelay = 10;
+ chan->algo.timeout = msecs_to_jiffies(500);
+ chan->algo.data = chan;
+
+ i2c_set_adapdata(&chan->adapter, chan);
+
+ rc = i2c_bit_add_bus(&chan->adapter);
+ if (rc == 0)
+ DPRINTK("I2C bus %s registered.\n", name);
+ else
+ chan->par = NULL;
+
+ return rc;
+}
+
+static int tdfxfb_setup_i2c_bus(struct tdfxfb_i2c_chan *chan, const char *name,
+ struct device *dev)
+{
+ int rc;
+
+ strlcpy(chan->adapter.name, name, sizeof(chan->adapter.name));
+ chan->adapter.owner = THIS_MODULE;
+ chan->adapter.algo_data = &chan->algo;
+ chan->adapter.dev.parent = dev;
+ chan->algo.setsda = tdfxfb_i2c_setsda;
+ chan->algo.setscl = tdfxfb_i2c_setscl;
+ chan->algo.getsda = tdfxfb_i2c_getsda;
+ chan->algo.getscl = tdfxfb_i2c_getscl;
+ chan->algo.udelay = 10;
+ chan->algo.timeout = msecs_to_jiffies(500);
+ chan->algo.data = chan;
+
+ i2c_set_adapdata(&chan->adapter, chan);
+
+ rc = i2c_bit_add_bus(&chan->adapter);
+ if (rc == 0)
+ DPRINTK("I2C bus %s registered.\n", name);
+ else
+ chan->par = NULL;
+
+ return rc;
+}
+
+static void tdfxfb_create_i2c_busses(struct fb_info *info)
+{
+ struct tdfx_par *par = info->par;
+
+ tdfx_outl(par, VIDINFORMAT, 0x8160);
+ tdfx_outl(par, VIDSERPARPORT, 0xcffc0020);
+
+ par->chan[0].par = par;
+ par->chan[1].par = par;
+
+ tdfxfb_setup_ddc_bus(&par->chan[0], "Voodoo3-DDC", info->dev);
+ tdfxfb_setup_i2c_bus(&par->chan[1], "Voodoo3-I2C", info->dev);
+}
+
+static void tdfxfb_delete_i2c_busses(struct tdfx_par *par)
+{
+ if (par->chan[0].par)
+ i2c_del_adapter(&par->chan[0].adapter);
+ par->chan[0].par = NULL;
+
+ if (par->chan[1].par)
+ i2c_del_adapter(&par->chan[1].adapter);
+ par->chan[1].par = NULL;
+}
+
+static int tdfxfb_probe_i2c_connector(struct tdfx_par *par,
+ struct fb_monspecs *specs)
+{
+ u8 *edid = NULL;
+
+ DPRINTK("Probe DDC Bus\n");
+ if (par->chan[0].par)
+ edid = fb_ddc_read(&par->chan[0].adapter);
+
+ if (edid) {
+ fb_edid_to_monspecs(edid, specs);
+ kfree(edid);
+ return 0;
+ }
+ return 1;
+}
+#endif /* CONFIG_FB_3DFX_I2C */
+
+/**
+ * tdfxfb_probe - Device Initializiation
+ *
+ * @pdev: PCI Device to initialize
+ * @id: PCI Device ID
+ *
+ * Initializes and allocates resources for PCI device @pdev.
+ *
+ */
+static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct tdfx_par *default_par;
+ struct fb_info *info;
+ int err, lpitch;
+ struct fb_monspecs *specs;
+ bool found;
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ printk(KERN_ERR "tdfxfb: Can't enable pdev: %d\n", err);
+ return err;
+ }
+
+ info = framebuffer_alloc(sizeof(struct tdfx_par), &pdev->dev);
+
+ if (!info)
+ return -ENOMEM;
+
+ default_par = info->par;
+ info->fix = tdfx_fix;
+
+ /* Configure the default fb_fix_screeninfo first */
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_3DFX_BANSHEE:
+ strcpy(info->fix.id, "3Dfx Banshee");
+ default_par->max_pixclock = BANSHEE_MAX_PIXCLOCK;
+ break;
+ case PCI_DEVICE_ID_3DFX_VOODOO3:
+ strcpy(info->fix.id, "3Dfx Voodoo3");
+ default_par->max_pixclock = VOODOO3_MAX_PIXCLOCK;
+ break;
+ case PCI_DEVICE_ID_3DFX_VOODOO5:
+ strcpy(info->fix.id, "3Dfx Voodoo5");
+ default_par->max_pixclock = VOODOO5_MAX_PIXCLOCK;
+ break;
+ }
+
+ info->fix.mmio_start = pci_resource_start(pdev, 0);
+ info->fix.mmio_len = pci_resource_len(pdev, 0);
+ if (!request_mem_region(info->fix.mmio_start, info->fix.mmio_len,
+ "tdfx regbase")) {
+ printk(KERN_ERR "tdfxfb: Can't reserve regbase\n");
+ goto out_err;
+ }
+
+ default_par->regbase_virt =
+ ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len);
+ if (!default_par->regbase_virt) {
+ printk(KERN_ERR "fb: Can't remap %s register area.\n",
+ info->fix.id);
+ goto out_err_regbase;
+ }
+
+ info->fix.smem_start = pci_resource_start(pdev, 1);
+ info->fix.smem_len = do_lfb_size(default_par, pdev->device);
+ if (!info->fix.smem_len) {
+ printk(KERN_ERR "fb: Can't count %s memory.\n", info->fix.id);
+ goto out_err_regbase;
+ }
+
+ if (!request_mem_region(info->fix.smem_start,
+ pci_resource_len(pdev, 1), "tdfx smem")) {
+ printk(KERN_ERR "tdfxfb: Can't reserve smem\n");
+ goto out_err_regbase;
+ }
+
+ info->screen_base = ioremap_nocache(info->fix.smem_start,
+ info->fix.smem_len);
+ if (!info->screen_base) {
+ printk(KERN_ERR "fb: Can't remap %s framebuffer.\n",
+ info->fix.id);
+ goto out_err_screenbase;
+ }
+
+ default_par->iobase = pci_resource_start(pdev, 2);
+
+ if (!request_region(pci_resource_start(pdev, 2),
+ pci_resource_len(pdev, 2), "tdfx iobase")) {
+ printk(KERN_ERR "tdfxfb: Can't reserve iobase\n");
+ goto out_err_screenbase;
+ }
+
+ printk(KERN_INFO "fb: %s memory = %dK\n", info->fix.id,
+ info->fix.smem_len >> 10);
+
+ default_par->mtrr_handle = -1;
+ if (!nomtrr)
+ default_par->mtrr_handle =
+ mtrr_add(info->fix.smem_start, info->fix.smem_len,
+ MTRR_TYPE_WRCOMB, 1);
+
+ info->fix.ypanstep = nopan ? 0 : 1;
+ info->fix.ywrapstep = nowrap ? 0 : 1;
+
+ info->fbops = &tdfxfb_ops;
+ info->pseudo_palette = default_par->palette;
+ info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+#ifdef CONFIG_FB_3DFX_ACCEL
+ info->flags |= FBINFO_HWACCEL_FILLRECT |
+ FBINFO_HWACCEL_COPYAREA |
+ FBINFO_HWACCEL_IMAGEBLIT |
+ FBINFO_READS_FAST;
+#endif
+ /* reserve 8192 bits for cursor */
+ /* the 2.4 driver says PAGE_MASK boundary is not enough for Voodoo4 */
+ if (hwcursor)
+ info->fix.smem_len = (info->fix.smem_len - 1024) &
+ (PAGE_MASK << 1);
+ specs = &info->monspecs;
+ found = false;
+ info->var.bits_per_pixel = 8;
+#ifdef CONFIG_FB_3DFX_I2C
+ tdfxfb_create_i2c_busses(info);
+ err = tdfxfb_probe_i2c_connector(default_par, specs);
+
+ if (!err) {
+ if (specs->modedb == NULL)
+ DPRINTK("Unable to get Mode Database\n");
+ else {
+ const struct fb_videomode *m;
+
+ fb_videomode_to_modelist(specs->modedb,
+ specs->modedb_len,
+ &info->modelist);
+ m = fb_find_best_display(specs, &info->modelist);
+ if (m) {
+ fb_videomode_to_var(&info->var, m);
+ /* fill all other info->var's fields */
+ if (tdfxfb_check_var(&info->var, info) < 0)
+ info->var = tdfx_var;
+ else
+ found = true;
+ }
+ }
+ }
+#endif
+ if (!mode_option && !found)
+ mode_option = "640x480@60";
+
+ if (mode_option) {
+ err = fb_find_mode(&info->var, info, mode_option,
+ specs->modedb, specs->modedb_len,
+ NULL, info->var.bits_per_pixel);
+ if (!err || err == 4)
+ info->var = tdfx_var;
+ }
+
+ if (found) {
+ fb_destroy_modedb(specs->modedb);
+ specs->modedb = NULL;
+ }
+
+ /* maximize virtual vertical length */
+ lpitch = info->var.xres_virtual * ((info->var.bits_per_pixel + 7) >> 3);
+ info->var.yres_virtual = info->fix.smem_len / lpitch;
+ if (info->var.yres_virtual < info->var.yres)
+ goto out_err_iobase;
+
+ if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
+ printk(KERN_ERR "tdfxfb: Can't allocate color map\n");
+ goto out_err_iobase;
+ }
+
+ if (register_framebuffer(info) < 0) {
+ printk(KERN_ERR "tdfxfb: can't register framebuffer\n");
+ fb_dealloc_cmap(&info->cmap);
+ goto out_err_iobase;
+ }
+ /*
+ * Our driver data
+ */
+ pci_set_drvdata(pdev, info);
+ return 0;
+
+out_err_iobase:
+#ifdef CONFIG_FB_3DFX_I2C
+ tdfxfb_delete_i2c_busses(default_par);
+#endif
+ if (default_par->mtrr_handle >= 0)
+ mtrr_del(default_par->mtrr_handle, info->fix.smem_start,
+ info->fix.smem_len);
+ release_region(pci_resource_start(pdev, 2),
+ pci_resource_len(pdev, 2));
+out_err_screenbase:
+ if (info->screen_base)
+ iounmap(info->screen_base);
+ release_mem_region(info->fix.smem_start, pci_resource_len(pdev, 1));
+out_err_regbase:
+ /*
+ * Cleanup after anything that was remapped/allocated.
+ */
+ if (default_par->regbase_virt)
+ iounmap(default_par->regbase_virt);
+ release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
+out_err:
+ framebuffer_release(info);
+ return -ENXIO;
+}
+
+#ifndef MODULE
+static void __init tdfxfb_setup(char *options)
+{
+ char *this_opt;
+
+ if (!options || !*options)
+ return;
+
+ while ((this_opt = strsep(&options, ",")) != NULL) {
+ if (!*this_opt)
+ continue;
+ if (!strcmp(this_opt, "nopan")) {
+ nopan = 1;
+ } else if (!strcmp(this_opt, "nowrap")) {
+ nowrap = 1;
+ } else if (!strncmp(this_opt, "hwcursor=", 9)) {
+ hwcursor = simple_strtoul(this_opt + 9, NULL, 0);
+#ifdef CONFIG_MTRR
+ } else if (!strncmp(this_opt, "nomtrr", 6)) {
+ nomtrr = 1;
+#endif
+ } else {
+ mode_option = this_opt;
+ }
+ }
+}
+#endif
+
+/**
+ * tdfxfb_remove - Device removal
+ *
+ * @pdev: PCI Device to cleanup
+ *
+ * Releases all resources allocated during the course of the driver's
+ * lifetime for the PCI device @pdev.
+ *
+ */
+static void tdfxfb_remove(struct pci_dev *pdev)
+{
+ struct fb_info *info = pci_get_drvdata(pdev);
+ struct tdfx_par *par = info->par;
+
+ unregister_framebuffer(info);
+#ifdef CONFIG_FB_3DFX_I2C
+ tdfxfb_delete_i2c_busses(par);
+#endif
+ if (par->mtrr_handle >= 0)
+ mtrr_del(par->mtrr_handle, info->fix.smem_start,
+ info->fix.smem_len);
+ iounmap(par->regbase_virt);
+ iounmap(info->screen_base);
+
+ /* Clean up after reserved regions */
+ release_region(pci_resource_start(pdev, 2),
+ pci_resource_len(pdev, 2));
+ release_mem_region(pci_resource_start(pdev, 1),
+ pci_resource_len(pdev, 1));
+ release_mem_region(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0));
+ fb_dealloc_cmap(&info->cmap);
+ framebuffer_release(info);
+}
+
+static int __init tdfxfb_init(void)
+{
+#ifndef MODULE
+ char *option = NULL;
+
+ if (fb_get_options("tdfxfb", &option))
+ return -ENODEV;
+
+ tdfxfb_setup(option);
+#endif
+ return pci_register_driver(&tdfxfb_driver);
+}
+
+static void __exit tdfxfb_exit(void)
+{
+ pci_unregister_driver(&tdfxfb_driver);
+}
+
+MODULE_AUTHOR("Hannu Mallat <hmallat@cc.hut.fi>");
+MODULE_DESCRIPTION("3Dfx framebuffer device driver");
+MODULE_LICENSE("GPL");
+
+module_param(hwcursor, int, 0644);
+MODULE_PARM_DESC(hwcursor, "Enable hardware cursor "
+ "(1=enable, 0=disable, default=1)");
+module_param(mode_option, charp, 0);
+MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'");
+#ifdef CONFIG_MTRR
+module_param(nomtrr, bool, 0);
+MODULE_PARM_DESC(nomtrr, "Disable MTRR support (default: enabled)");
+#endif
+
+module_init(tdfxfb_init);
+module_exit(tdfxfb_exit);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 21:52:21 +0000