1 files changed, 211 insertions, 130 deletions

diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c
index 75738a92861..ddedad9cd06 100644
--- a/drivers/video/s3fb.c
+++ b/drivers/video/s3fb.c
@@ -64,6 +64,8 @@ static const struct svga_fb_format s3fb_formats[] = {
 
 static const struct svga_pll s3_pll = {3, 129, 3, 33, 0, 3,
         35000, 240000, 14318};
+static const struct svga_pll s3_trio3d_pll = {3, 129, 3, 31, 0, 4,
+        230000, 460000, 14318};
 
 static const int s3_memsizes[] = {4096, 0, 3072, 8192, 2048, 6144, 1024, 512};
 
@@ -72,7 +74,8 @@ static const char * const s3_names[] = {"S3 Unknown", "S3 Trio32", "S3 Trio64",
                         "S3 Plato/PX", "S3 Aurora64VP", "S3 Virge",
                         "S3 Virge/VX", "S3 Virge/DX", "S3 Virge/GX",
                         "S3 Virge/GX2", "S3 Virge/GX2P", "S3 Virge/GX2P",
-                        "S3 Trio3D/1X", "S3 Trio3D/2X", "S3 Trio3D/2X"};
+                        "S3 Trio3D/1X", "S3 Trio3D/2X", "S3 Trio3D/2X",
+                        "S3 Trio3D"};
 
 #define CHIP_UNKNOWN            0x00
 #define CHIP_732_TRIO32         0x01
@@ -93,6 +96,7 @@ static const char * const s3_names[] = {"S3 Unknown", "S3 Trio32", "S3 Trio64",
 #define CHIP_360_TRIO3D_1X      0x10
 #define CHIP_362_TRIO3D_2X      0x11
 #define CHIP_368_TRIO3D_2X      0x12
+#define CHIP_365_TRIO3D         0x13
 
 #define CHIP_XXX_TRIO           0x80
 #define CHIP_XXX_TRIO64V2_DXGX  0x81
@@ -119,9 +123,11 @@ static const struct vga_regset s3_v_sync_start_regs[]   = {{0x10, 0, 7}, {0x07,
 static const struct vga_regset s3_v_sync_end_regs[]     = {{0x11, 0, 3}, VGA_REGSET_END};
 
 static const struct vga_regset s3_line_compare_regs[]   = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x5E, 6, 6}, VGA_REGSET_END};
-static const struct vga_regset s3_start_address_regs[]  = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x31, 4, 5}, {0x51, 0, 1}, VGA_REGSET_END};
+static const struct vga_regset s3_start_address_regs[]  = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x69, 0, 4}, VGA_REGSET_END};
 static const struct vga_regset s3_offset_regs[]         = {{0x13, 0, 7}, {0x51, 4, 5}, VGA_REGSET_END}; /* set 0x43 bit 2 to 0 */
 
+static const struct vga_regset s3_dtpc_regs[]           = {{0x3B, 0, 7}, {0x5D, 6, 6}, VGA_REGSET_END};
+
 static const struct svga_timing_regs s3_timing_regs     = {
         s3_h_total_regs, s3_h_display_regs, s3_h_blank_start_regs,
         s3_h_blank_end_regs, s3_h_sync_start_regs, s3_h_sync_end_regs,
@@ -188,12 +194,19 @@ static void s3fb_settile_fast(struct fb_info *info, struct fb_tilemap *map)
         }
 }
 
+static void s3fb_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor)
+{
+        struct s3fb_info *par = info->par;
+
+        svga_tilecursor(par->state.vgabase, info, cursor);
+}
+
 static struct fb_tile_ops s3fb_tile_ops = {
         .fb_settile     = svga_settile,
         .fb_tilecopy    = svga_tilecopy,
         .fb_tilefill    = svga_tilefill,
         .fb_tileblit    = svga_tileblit,
-        .fb_tilecursor  = svga_tilecursor,
+        .fb_tilecursor  = s3fb_tilecursor,
         .fb_get_tilemax = svga_get_tilemax,
 };
 
@@ -202,7 +215,7 @@ static struct fb_tile_ops s3fb_fast_tile_ops = {
         .fb_tilecopy    = svga_tilecopy,
         .fb_tilefill    = svga_tilefill,
         .fb_tileblit    = svga_tileblit,
-        .fb_tilecursor  = svga_tilecursor,
+        .fb_tilecursor  = s3fb_tilecursor,
         .fb_get_tilemax = svga_get_tilemax,
 };
 
@@ -334,33 +347,34 @@ static void s3_set_pixclock(struct fb_info *info, u32 pixclock)
         u8 regval;
         int rv;
 
-        rv = svga_compute_pll(&s3_pll, 1000000000 / pixclock, &m, &n, &r, info->node);
+        rv = svga_compute_pll((par->chip == CHIP_365_TRIO3D) ? &s3_trio3d_pll : &s3_pll,
+                              1000000000 / pixclock, &m, &n, &r, info->node);
         if (rv < 0) {
                 printk(KERN_ERR "fb%d: cannot set requested pixclock, keeping old value\n", info->node);
                 return;
         }
 
         /* Set VGA misc register  */
-        regval = vga_r(NULL, VGA_MIS_R);
-        vga_w(NULL, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
+        regval = vga_r(par->state.vgabase, VGA_MIS_R);
+        vga_w(par->state.vgabase, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
 
         /* Set S3 clock registers */
         if (par->chip == CHIP_360_TRIO3D_1X ||
             par->chip == CHIP_362_TRIO3D_2X ||
             par->chip == CHIP_368_TRIO3D_2X) {
-                vga_wseq(NULL, 0x12, (n - 2) | ((r & 3) << 6)); /* n and two bits of r */
-                vga_wseq(NULL, 0x29, r >> 2); /* remaining highest bit of r */
+                vga_wseq(par->state.vgabase, 0x12, (n - 2) | ((r & 3) << 6));   /* n and two bits of r */
+                vga_wseq(par->state.vgabase, 0x29, r >> 2); /* remaining highest bit of r */
         } else
-                vga_wseq(NULL, 0x12, (n - 2) | (r << 5));
-        vga_wseq(NULL, 0x13, m - 2);
+                vga_wseq(par->state.vgabase, 0x12, (n - 2) | (r << 5));
+        vga_wseq(par->state.vgabase, 0x13, m - 2);
 
         udelay(1000);
 
         /* Activate clock - write 0, 1, 0 to seq/15 bit 5 */
-        regval = vga_rseq (NULL, 0x15); /* | 0x80; */
-        vga_wseq(NULL, 0x15, regval & ~(1<<5));
-        vga_wseq(NULL, 0x15, regval |  (1<<5));
-        vga_wseq(NULL, 0x15, regval & ~(1<<5));
+        regval = vga_rseq (par->state.vgabase, 0x15); /* | 0x80; */
+        vga_wseq(par->state.vgabase, 0x15, regval & ~(1<<5));
+        vga_wseq(par->state.vgabase, 0x15, regval |  (1<<5));
+        vga_wseq(par->state.vgabase, 0x15, regval & ~(1<<5));
 }
 
 
@@ -372,7 +386,10 @@ static int s3fb_open(struct fb_info *info, int user)
 
         mutex_lock(&(par->open_lock));
         if (par->ref_count == 0) {
+                void __iomem *vgabase = par->state.vgabase;
+
                 memset(&(par->state), 0, sizeof(struct vgastate));
+                par->state.vgabase = vgabase;
                 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP;
                 par->state.num_crtc = 0x70;
                 par->state.num_seq = 0x20;
@@ -470,6 +487,7 @@ static int s3fb_set_par(struct fb_info *info)
         struct s3fb_info *par = info->par;
         u32 value, mode, hmul, offset_value, screen_size, multiplex, dbytes;
         u32 bpp = info->var.bits_per_pixel;
+        u32 htotal, hsstart;
 
         if (bpp != 0) {
                 info->fix.ypanstep = 1;
@@ -504,99 +522,112 @@ static int s3fb_set_par(struct fb_info *info)
         info->var.activate = FB_ACTIVATE_NOW;
 
         /* Unlock registers */
-        vga_wcrt(NULL, 0x38, 0x48);
-        vga_wcrt(NULL, 0x39, 0xA5);
-        vga_wseq(NULL, 0x08, 0x06);
-        svga_wcrt_mask(0x11, 0x00, 0x80);
+        vga_wcrt(par->state.vgabase, 0x38, 0x48);
+        vga_wcrt(par->state.vgabase, 0x39, 0xA5);
+        vga_wseq(par->state.vgabase, 0x08, 0x06);
+        svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x80);
 
         /* Blank screen and turn off sync */
-        svga_wseq_mask(0x01, 0x20, 0x20);
-        svga_wcrt_mask(0x17, 0x00, 0x80);
+        svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
+        svga_wcrt_mask(par->state.vgabase, 0x17, 0x00, 0x80);
 
         /* Set default values */
-        svga_set_default_gfx_regs();
-        svga_set_default_atc_regs();
-        svga_set_default_seq_regs();
-        svga_set_default_crt_regs();
-        svga_wcrt_multi(s3_line_compare_regs, 0xFFFFFFFF);
-        svga_wcrt_multi(s3_start_address_regs, 0);
+        svga_set_default_gfx_regs(par->state.vgabase);
+        svga_set_default_atc_regs(par->state.vgabase);
+        svga_set_default_seq_regs(par->state.vgabase);
+        svga_set_default_crt_regs(par->state.vgabase);
+        svga_wcrt_multi(par->state.vgabase, s3_line_compare_regs, 0xFFFFFFFF);
+        svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, 0);
 
         /* S3 specific initialization */
-        svga_wcrt_mask(0x58, 0x10, 0x10); /* enable linear framebuffer */
-        svga_wcrt_mask(0x31, 0x08, 0x08); /* enable sequencer access to framebuffer above 256 kB */
+        svga_wcrt_mask(par->state.vgabase, 0x58, 0x10, 0x10); /* enable linear framebuffer */
+        svga_wcrt_mask(par->state.vgabase, 0x31, 0x08, 0x08); /* enable sequencer access to framebuffer above 256 kB */
 
-/*      svga_wcrt_mask(0x33, 0x08, 0x08); */ /* DDR ?   */
-/*      svga_wcrt_mask(0x43, 0x01, 0x01); */ /* DDR ?   */
-        svga_wcrt_mask(0x33, 0x00, 0x08); /* no DDR ?   */
-        svga_wcrt_mask(0x43, 0x00, 0x01); /* no DDR ?   */
+/*      svga_wcrt_mask(par->state.vgabase, 0x33, 0x08, 0x08); */ /* DDR ?       */
+/*      svga_wcrt_mask(par->state.vgabase, 0x43, 0x01, 0x01); */ /* DDR ?       */
+        svga_wcrt_mask(par->state.vgabase, 0x33, 0x00, 0x08); /* no DDR ?       */
+        svga_wcrt_mask(par->state.vgabase, 0x43, 0x00, 0x01); /* no DDR ?       */
 
-        svga_wcrt_mask(0x5D, 0x00, 0x28); /* Clear strange HSlen bits */
+        svga_wcrt_mask(par->state.vgabase, 0x5D, 0x00, 0x28); /* Clear strange HSlen bits */
 
-/*      svga_wcrt_mask(0x58, 0x03, 0x03); */
+/*      svga_wcrt_mask(par->state.vgabase, 0x58, 0x03, 0x03); */
 
-/*      svga_wcrt_mask(0x53, 0x12, 0x13); */ /* enable MMIO */
-/*      svga_wcrt_mask(0x40, 0x08, 0x08); */ /* enable write buffer */
+/*      svga_wcrt_mask(par->state.vgabase, 0x53, 0x12, 0x13); */ /* enable MMIO */
+/*      svga_wcrt_mask(par->state.vgabase, 0x40, 0x08, 0x08); */ /* enable write buffer */
 
 
         /* Set the offset register */
         pr_debug("fb%d: offset register       : %d\n", info->node, offset_value);
-        svga_wcrt_multi(s3_offset_regs, offset_value);
+        svga_wcrt_multi(par->state.vgabase, s3_offset_regs, offset_value);
 
         if (par->chip != CHIP_360_TRIO3D_1X &&
             par->chip != CHIP_362_TRIO3D_2X &&
             par->chip != CHIP_368_TRIO3D_2X) {
-                vga_wcrt(NULL, 0x54, 0x18); /* M parameter */
-                vga_wcrt(NULL, 0x60, 0xff); /* N parameter */
-                vga_wcrt(NULL, 0x61, 0xff); /* L parameter */
-                vga_wcrt(NULL, 0x62, 0xff); /* L parameter */
+                vga_wcrt(par->state.vgabase, 0x54, 0x18); /* M parameter */
+                vga_wcrt(par->state.vgabase, 0x60, 0xff); /* N parameter */
+                vga_wcrt(par->state.vgabase, 0x61, 0xff); /* L parameter */
+                vga_wcrt(par->state.vgabase, 0x62, 0xff); /* L parameter */
         }
 
-        vga_wcrt(NULL, 0x3A, 0x35);
-        svga_wattr(0x33, 0x00);
+        vga_wcrt(par->state.vgabase, 0x3A, 0x35);
+        svga_wattr(par->state.vgabase, 0x33, 0x00);
 
         if (info->var.vmode & FB_VMODE_DOUBLE)
-                svga_wcrt_mask(0x09, 0x80, 0x80);
+                svga_wcrt_mask(par->state.vgabase, 0x09, 0x80, 0x80);
         else
-                svga_wcrt_mask(0x09, 0x00, 0x80);
+                svga_wcrt_mask(par->state.vgabase, 0x09, 0x00, 0x80);
 
         if (info->var.vmode & FB_VMODE_INTERLACED)
-                svga_wcrt_mask(0x42, 0x20, 0x20);
+                svga_wcrt_mask(par->state.vgabase, 0x42, 0x20, 0x20);
         else
-                svga_wcrt_mask(0x42, 0x00, 0x20);
+                svga_wcrt_mask(par->state.vgabase, 0x42, 0x00, 0x20);
 
         /* Disable hardware graphics cursor */
-        svga_wcrt_mask(0x45, 0x00, 0x01);
+        svga_wcrt_mask(par->state.vgabase, 0x45, 0x00, 0x01);
         /* Disable Streams engine */
-        svga_wcrt_mask(0x67, 0x00, 0x0C);
+        svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0x0C);
 
         mode = svga_match_format(s3fb_formats, &(info->var), &(info->fix));
 
         /* S3 virge DX hack */
         if (par->chip == CHIP_375_VIRGE_DX) {
-                vga_wcrt(NULL, 0x86, 0x80);
-                vga_wcrt(NULL, 0x90, 0x00);
+                vga_wcrt(par->state.vgabase, 0x86, 0x80);
+                vga_wcrt(par->state.vgabase, 0x90, 0x00);
         }
 
         /* S3 virge VX hack */
         if (par->chip == CHIP_988_VIRGE_VX) {
-                vga_wcrt(NULL, 0x50, 0x00);
-                vga_wcrt(NULL, 0x67, 0x50);
+                vga_wcrt(par->state.vgabase, 0x50, 0x00);
+                vga_wcrt(par->state.vgabase, 0x67, 0x50);
 
-                vga_wcrt(NULL, 0x63, (mode <= 2) ? 0x90 : 0x09);
-                vga_wcrt(NULL, 0x66, 0x90);
+                vga_wcrt(par->state.vgabase, 0x63, (mode <= 2) ? 0x90 : 0x09);
+                vga_wcrt(par->state.vgabase, 0x66, 0x90);
         }
 
         if (par->chip == CHIP_360_TRIO3D_1X ||
             par->chip == CHIP_362_TRIO3D_2X ||
-            par->chip == CHIP_368_TRIO3D_2X) {
+            par->chip == CHIP_368_TRIO3D_2X ||
+            par->chip == CHIP_365_TRIO3D    ||
+            par->chip == CHIP_375_VIRGE_DX  ||
+            par->chip == CHIP_385_VIRGE_GX) {
                 dbytes = info->var.xres * ((bpp+7)/8);
-                vga_wcrt(NULL, 0x91, (dbytes + 7) / 8);
-                vga_wcrt(NULL, 0x90, (((dbytes + 7) / 8) >> 8) | 0x80);
+                vga_wcrt(par->state.vgabase, 0x91, (dbytes + 7) / 8);
+                vga_wcrt(par->state.vgabase, 0x90, (((dbytes + 7) / 8) >> 8) | 0x80);
 
-                vga_wcrt(NULL, 0x66, 0x81);
+                vga_wcrt(par->state.vgabase, 0x66, 0x81);
         }
 
-        svga_wcrt_mask(0x31, 0x00, 0x40);
+        if (par->chip == CHIP_356_VIRGE_GX2  ||
+            par->chip == CHIP_357_VIRGE_GX2P ||
+            par->chip == CHIP_359_VIRGE_GX2P ||
+            par->chip == CHIP_360_TRIO3D_1X ||
+            par->chip == CHIP_362_TRIO3D_2X ||
+            par->chip == CHIP_368_TRIO3D_2X)
+                vga_wcrt(par->state.vgabase, 0x34, 0x00);
+        else    /* enable Data Transfer Position Control (DTPC) */
+                vga_wcrt(par->state.vgabase, 0x34, 0x10);
+
+        svga_wcrt_mask(par->state.vgabase, 0x31, 0x00, 0x40);
         multiplex = 0;
         hmul = 1;
 
@@ -604,51 +635,51 @@ static int s3fb_set_par(struct fb_info *info)
         switch (mode) {
         case 0:
                 pr_debug("fb%d: text mode\n", info->node);
-                svga_set_textmode_vga_regs();
+                svga_set_textmode_vga_regs(par->state.vgabase);
 
                 /* Set additional registers like in 8-bit mode */
-                svga_wcrt_mask(0x50, 0x00, 0x30);
-                svga_wcrt_mask(0x67, 0x00, 0xF0);
+                svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
+                svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
 
                 /* Disable enhanced mode */
-                svga_wcrt_mask(0x3A, 0x00, 0x30);
+                svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
 
                 if (fasttext) {
                         pr_debug("fb%d: high speed text mode set\n", info->node);
-                        svga_wcrt_mask(0x31, 0x40, 0x40);
+                        svga_wcrt_mask(par->state.vgabase, 0x31, 0x40, 0x40);
                 }
                 break;
         case 1:
                 pr_debug("fb%d: 4 bit pseudocolor\n", info->node);
-                vga_wgfx(NULL, VGA_GFX_MODE, 0x40);
+                vga_wgfx(par->state.vgabase, VGA_GFX_MODE, 0x40);
 
                 /* Set additional registers like in 8-bit mode */
-                svga_wcrt_mask(0x50, 0x00, 0x30);
-                svga_wcrt_mask(0x67, 0x00, 0xF0);
+                svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
+                svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
 
                 /* disable enhanced mode */
-                svga_wcrt_mask(0x3A, 0x00, 0x30);
+                svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
                 break;
         case 2:
                 pr_debug("fb%d: 4 bit pseudocolor, planar\n", info->node);
 
                 /* Set additional registers like in 8-bit mode */
-                svga_wcrt_mask(0x50, 0x00, 0x30);
-                svga_wcrt_mask(0x67, 0x00, 0xF0);
+                svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
+                svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
 
                 /* disable enhanced mode */
-                svga_wcrt_mask(0x3A, 0x00, 0x30);
+                svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
                 break;
         case 3:
                 pr_debug("fb%d: 8 bit pseudocolor\n", info->node);
-                svga_wcrt_mask(0x50, 0x00, 0x30);
+                svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
                 if (info->var.pixclock > 20000 ||
                     par->chip == CHIP_360_TRIO3D_1X ||
                     par->chip == CHIP_362_TRIO3D_2X ||
                     par->chip == CHIP_368_TRIO3D_2X)
-                        svga_wcrt_mask(0x67, 0x00, 0xF0);
+                        svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
                 else {
-                        svga_wcrt_mask(0x67, 0x10, 0xF0);
+                        svga_wcrt_mask(par->state.vgabase, 0x67, 0x10, 0xF0);
                         multiplex = 1;
                 }
                 break;
@@ -656,12 +687,21 @@ static int s3fb_set_par(struct fb_info *info)
                 pr_debug("fb%d: 5/5/5 truecolor\n", info->node);
                 if (par->chip == CHIP_988_VIRGE_VX) {
                         if (info->var.pixclock > 20000)
-                                svga_wcrt_mask(0x67, 0x20, 0xF0);
+                                svga_wcrt_mask(par->state.vgabase, 0x67, 0x20, 0xF0);
                         else
-                                svga_wcrt_mask(0x67, 0x30, 0xF0);
+                                svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
+                } else if (par->chip == CHIP_365_TRIO3D) {
+                        svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
+                        if (info->var.pixclock > 8695) {
+                                svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
+                                hmul = 2;
+                        } else {
+                                svga_wcrt_mask(par->state.vgabase, 0x67, 0x20, 0xF0);
+                                multiplex = 1;
+                        }
                 } else {
-                        svga_wcrt_mask(0x50, 0x10, 0x30);
-                        svga_wcrt_mask(0x67, 0x30, 0xF0);
+                        svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
+                        svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
                         if (par->chip != CHIP_360_TRIO3D_1X &&
                             par->chip != CHIP_362_TRIO3D_2X &&
                             par->chip != CHIP_368_TRIO3D_2X)
@@ -672,12 +712,21 @@ static int s3fb_set_par(struct fb_info *info)
                 pr_debug("fb%d: 5/6/5 truecolor\n", info->node);
                 if (par->chip == CHIP_988_VIRGE_VX) {
                         if (info->var.pixclock > 20000)
-                                svga_wcrt_mask(0x67, 0x40, 0xF0);
+                                svga_wcrt_mask(par->state.vgabase, 0x67, 0x40, 0xF0);
                         else
-                                svga_wcrt_mask(0x67, 0x50, 0xF0);
+                                svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
+                } else if (par->chip == CHIP_365_TRIO3D) {
+                        svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
+                        if (info->var.pixclock > 8695) {
+                                svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
+                                hmul = 2;
+                        } else {
+                                svga_wcrt_mask(par->state.vgabase, 0x67, 0x40, 0xF0);
+                                multiplex = 1;
+                        }
                 } else {
-                        svga_wcrt_mask(0x50, 0x10, 0x30);
-                        svga_wcrt_mask(0x67, 0x50, 0xF0);
+                        svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
+                        svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
                         if (par->chip != CHIP_360_TRIO3D_1X &&
                             par->chip != CHIP_362_TRIO3D_2X &&
                             par->chip != CHIP_368_TRIO3D_2X)
@@ -687,12 +736,12 @@ static int s3fb_set_par(struct fb_info *info)
         case 6:
                 /* VIRGE VX case */
                 pr_debug("fb%d: 8/8/8 truecolor\n", info->node);
-                svga_wcrt_mask(0x67, 0xD0, 0xF0);
+                svga_wcrt_mask(par->state.vgabase, 0x67, 0xD0, 0xF0);
                 break;
         case 7:
                 pr_debug("fb%d: 8/8/8/8 truecolor\n", info->node);
-                svga_wcrt_mask(0x50, 0x30, 0x30);
-                svga_wcrt_mask(0x67, 0xD0, 0xF0);
+                svga_wcrt_mask(par->state.vgabase, 0x50, 0x30, 0x30);
+                svga_wcrt_mask(par->state.vgabase, 0x67, 0xD0, 0xF0);
                 break;
         default:
                 printk(KERN_ERR "fb%d: unsupported mode - bug\n", info->node);
@@ -700,25 +749,30 @@ static int s3fb_set_par(struct fb_info *info)
         }
 
         if (par->chip != CHIP_988_VIRGE_VX) {
-                svga_wseq_mask(0x15, multiplex ? 0x10 : 0x00, 0x10);
-                svga_wseq_mask(0x18, multiplex ? 0x80 : 0x00, 0x80);
+                svga_wseq_mask(par->state.vgabase, 0x15, multiplex ? 0x10 : 0x00, 0x10);
+                svga_wseq_mask(par->state.vgabase, 0x18, multiplex ? 0x80 : 0x00, 0x80);
         }
 
         s3_set_pixclock(info, info->var.pixclock);
-        svga_set_timings(&s3_timing_regs, &(info->var), hmul, 1,
+        svga_set_timings(par->state.vgabase, &s3_timing_regs, &(info->var), hmul, 1,
                          (info->var.vmode & FB_VMODE_DOUBLE)     ? 2 : 1,
                          (info->var.vmode & FB_VMODE_INTERLACED) ? 2 : 1,
                          hmul, info->node);
 
         /* Set interlaced mode start/end register */
-        value = info->var.xres + info->var.left_margin + info->var.right_margin + info->var.hsync_len;
-        value = ((value * hmul) / 8) - 5;
-        vga_wcrt(NULL, 0x3C, (value + 1) / 2);
+        htotal = info->var.xres + info->var.left_margin + info->var.right_margin + info->var.hsync_len;
+        htotal = ((htotal * hmul) / 8) - 5;
+        vga_wcrt(par->state.vgabase, 0x3C, (htotal + 1) / 2);
+
+        /* Set Data Transfer Position */
+        hsstart = ((info->var.xres + info->var.right_margin) * hmul) / 8;
+        value = clamp((htotal + hsstart + 1) / 2, hsstart + 4, htotal + 1);
+        svga_wcrt_multi(par->state.vgabase, s3_dtpc_regs, value);
 
         memset_io(info->screen_base, 0x00, screen_size);
         /* Device and screen back on */
-        svga_wcrt_mask(0x17, 0x80, 0x80);
-        svga_wseq_mask(0x01, 0x00, 0x20);
+        svga_wcrt_mask(par->state.vgabase, 0x17, 0x80, 0x80);
+        svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20);
 
         return 0;
 }
@@ -788,31 +842,33 @@ static int s3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 
 static int s3fb_blank(int blank_mode, struct fb_info *info)
 {
+        struct s3fb_info *par = info->par;
+
         switch (blank_mode) {
         case FB_BLANK_UNBLANK:
                 pr_debug("fb%d: unblank\n", info->node);
-                svga_wcrt_mask(0x56, 0x00, 0x06);
-                svga_wseq_mask(0x01, 0x00, 0x20);
+                svga_wcrt_mask(par->state.vgabase, 0x56, 0x00, 0x06);
+                svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20);
                 break;
         case FB_BLANK_NORMAL:
                 pr_debug("fb%d: blank\n", info->node);
-                svga_wcrt_mask(0x56, 0x00, 0x06);
-                svga_wseq_mask(0x01, 0x20, 0x20);
+                svga_wcrt_mask(par->state.vgabase, 0x56, 0x00, 0x06);
+                svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
                 break;
         case FB_BLANK_HSYNC_SUSPEND:
                 pr_debug("fb%d: hsync\n", info->node);
-                svga_wcrt_mask(0x56, 0x02, 0x06);
-                svga_wseq_mask(0x01, 0x20, 0x20);
+                svga_wcrt_mask(par->state.vgabase, 0x56, 0x02, 0x06);
+                svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
                 break;
         case FB_BLANK_VSYNC_SUSPEND:
                 pr_debug("fb%d: vsync\n", info->node);
-                svga_wcrt_mask(0x56, 0x04, 0x06);
-                svga_wseq_mask(0x01, 0x20, 0x20);
+                svga_wcrt_mask(par->state.vgabase, 0x56, 0x04, 0x06);
+                svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
                 break;
         case FB_BLANK_POWERDOWN:
                 pr_debug("fb%d: sync down\n", info->node);
-                svga_wcrt_mask(0x56, 0x06, 0x06);
-                svga_wseq_mask(0x01, 0x20, 0x20);
+                svga_wcrt_mask(par->state.vgabase, 0x56, 0x06, 0x06);
+                svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
                 break;
         }
 
@@ -822,8 +878,9 @@ static int s3fb_blank(int blank_mode, struct fb_info *info)
 
 /* Pan the display */
 
-static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) {
-
+static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+        struct s3fb_info *par = info->par;
         unsigned int offset;
 
         /* Calculate the offset */
@@ -837,7 +894,7 @@ static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
         }
 
         /* Set the offset */
-        svga_wcrt_multi(s3_start_address_regs, offset);
+        svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, offset);
 
         return 0;
 }
@@ -863,12 +920,14 @@ static struct fb_ops s3fb_ops = {
 
 /* ------------------------------------------------------------------------- */
 
-static int __devinit s3_identification(int chip)
+static int __devinit s3_identification(struct s3fb_info *par)
 {
+        int chip = par->chip;
+
         if (chip == CHIP_XXX_TRIO) {
-                u8 cr30 = vga_rcrt(NULL, 0x30);
-                u8 cr2e = vga_rcrt(NULL, 0x2e);
-                u8 cr2f = vga_rcrt(NULL, 0x2f);
+                u8 cr30 = vga_rcrt(par->state.vgabase, 0x30);
+                u8 cr2e = vga_rcrt(par->state.vgabase, 0x2e);
+                u8 cr2f = vga_rcrt(par->state.vgabase, 0x2f);
 
                 if ((cr30 == 0xE0) || (cr30 == 0xE1)) {
                         if (cr2e == 0x10)
@@ -883,7 +942,7 @@ static int __devinit s3_identification(int chip)
         }
 
         if (chip == CHIP_XXX_TRIO64V2_DXGX) {
-                u8 cr6f = vga_rcrt(NULL, 0x6f);
+                u8 cr6f = vga_rcrt(par->state.vgabase, 0x6f);
 
                 if (! (cr6f & 0x01))
                         return CHIP_775_TRIO64V2_DX;
@@ -892,7 +951,7 @@ static int __devinit s3_identification(int chip)
         }
 
         if (chip == CHIP_XXX_VIRGE_DXGX) {
-                u8 cr6f = vga_rcrt(NULL, 0x6f);
+                u8 cr6f = vga_rcrt(par->state.vgabase, 0x6f);
 
                 if (! (cr6f & 0x01))
                         return CHIP_375_VIRGE_DX;
@@ -901,7 +960,7 @@ static int __devinit s3_identification(int chip)
         }
 
         if (chip == CHIP_36X_TRIO3D_1X_2X) {
-                switch (vga_rcrt(NULL, 0x2f)) {
+                switch (vga_rcrt(par->state.vgabase, 0x2f)) {
                 case 0x00:
                         return CHIP_360_TRIO3D_1X;
                 case 0x01:
@@ -919,6 +978,8 @@ static int __devinit s3_identification(int chip)
 
 static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 {
+        struct pci_bus_region bus_reg;
+        struct resource vga_res;
         struct fb_info *info;
         struct s3fb_info *par;
         int rc;
@@ -968,31 +1029,42 @@ static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_i
                 goto err_iomap;
         }
 
+        bus_reg.start = 0;
+        bus_reg.end = 64 * 1024;
+
+        vga_res.flags = IORESOURCE_IO;
+
+        pcibios_bus_to_resource(dev, &vga_res, &bus_reg);
+
+        par->state.vgabase = (void __iomem *) vga_res.start;
+
         /* Unlock regs */
-        cr38 = vga_rcrt(NULL, 0x38);
-        cr39 = vga_rcrt(NULL, 0x39);
-        vga_wseq(NULL, 0x08, 0x06);
-        vga_wcrt(NULL, 0x38, 0x48);
-        vga_wcrt(NULL, 0x39, 0xA5);
+        cr38 = vga_rcrt(par->state.vgabase, 0x38);
+        cr39 = vga_rcrt(par->state.vgabase, 0x39);
+        vga_wseq(par->state.vgabase, 0x08, 0x06);
+        vga_wcrt(par->state.vgabase, 0x38, 0x48);
+        vga_wcrt(par->state.vgabase, 0x39, 0xA5);
 
         /* Identify chip type */
         par->chip = id->driver_data & CHIP_MASK;
-        par->rev = vga_rcrt(NULL, 0x2f);
+        par->rev = vga_rcrt(par->state.vgabase, 0x2f);
         if (par->chip & CHIP_UNDECIDED_FLAG)
-                par->chip = s3_identification(par->chip);
+                par->chip = s3_identification(par);
 
         /* Find how many physical memory there is on card */
         /* 0x36 register is accessible even if other registers are locked */
-        regval = vga_rcrt(NULL, 0x36);
+        regval = vga_rcrt(par->state.vgabase, 0x36);
         if (par->chip == CHIP_360_TRIO3D_1X ||
             par->chip == CHIP_362_TRIO3D_2X ||
-            par->chip == CHIP_368_TRIO3D_2X) {
+            par->chip == CHIP_368_TRIO3D_2X ||
+            par->chip == CHIP_365_TRIO3D) {
                 switch ((regval & 0xE0) >> 5) {
                 case 0: /* 8MB -- only 4MB usable for display */
                 case 1: /* 4MB with 32-bit bus */
                 case 2: /* 4MB */
                         info->screen_size = 4 << 20;
                         break;
+                case 4: /* 2MB on 365 Trio3D */
                 case 6: /* 2MB */
                         info->screen_size = 2 << 20;
                         break;
@@ -1002,13 +1074,13 @@ static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_i
         info->fix.smem_len = info->screen_size;
 
         /* Find MCLK frequency */
-        regval = vga_rseq(NULL, 0x10);
-        par->mclk_freq = ((vga_rseq(NULL, 0x11) + 2) * 14318) / ((regval & 0x1F)  + 2);
+        regval = vga_rseq(par->state.vgabase, 0x10);
+        par->mclk_freq = ((vga_rseq(par->state.vgabase, 0x11) + 2) * 14318) / ((regval & 0x1F)  + 2);
         par->mclk_freq = par->mclk_freq >> (regval >> 5);
 
         /* Restore locks */
-        vga_wcrt(NULL, 0x38, cr38);
-        vga_wcrt(NULL, 0x39, cr39);
+        vga_wcrt(par->state.vgabase, 0x38, cr38);
+        vga_wcrt(par->state.vgabase, 0x39, cr39);
 
         strcpy(info->fix.id, s3_names [par->chip]);
         info->fix.mmio_start = 0;
@@ -1027,6 +1099,14 @@ static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_i
                 goto err_find_mode;
         }
 
+        /* maximize virtual vertical size for fast scrolling */
+        info->var.yres_virtual = info->fix.smem_len * 8 /
+                        (info->var.bits_per_pixel * info->var.xres_virtual);
+        if (info->var.yres_virtual < info->var.yres) {
+                dev_err(info->device, "virtual vertical size smaller than real\n");
+                goto err_find_mode;
+        }
+
         rc = fb_alloc_cmap(&info->cmap, 256, 0);
         if (rc < 0) {
                 dev_err(info->device, "cannot allocate colormap\n");
@@ -1044,8 +1124,8 @@ static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_i
 
         if (par->chip == CHIP_UNKNOWN)
                 printk(KERN_INFO "fb%d: unknown chip, CR2D=%x, CR2E=%x, CRT2F=%x, CRT30=%x\n",
-                        info->node, vga_rcrt(NULL, 0x2d), vga_rcrt(NULL, 0x2e),
-                        vga_rcrt(NULL, 0x2f), vga_rcrt(NULL, 0x30));
+                        info->node, vga_rcrt(par->state.vgabase, 0x2d), vga_rcrt(par->state.vgabase, 0x2e),
+                        vga_rcrt(par->state.vgabase, 0x2f), vga_rcrt(par->state.vgabase, 0x30));
 
         /* Record a reference to the driver data */
         pci_set_drvdata(dev, info);
@@ -1192,6 +1272,7 @@ static struct pci_device_id s3_devices[] __devinitdata = {
         {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A11), .driver_data = CHIP_357_VIRGE_GX2P},
         {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A12), .driver_data = CHIP_359_VIRGE_GX2P},
         {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A13), .driver_data = CHIP_36X_TRIO3D_1X_2X},
+        {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8904), .driver_data = CHIP_365_TRIO3D},
 
         {0, 0, 0, 0, 0, 0, 0}
 };