Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/video/tgafb.c b/drivers/video/tgafb.c
new file mode 100644
index 0000000..3099630d
--- /dev/null
+++ b/drivers/video/tgafb.c
@@ -0,0 +1,1557 @@
+/*
+ * linux/drivers/video/tgafb.c -- DEC 21030 TGA frame buffer device
+ *
+ * Copyright (C) 1995 Jay Estabrook
+ * Copyright (C) 1997 Geert Uytterhoeven
+ * Copyright (C) 1999,2000 Martin Lucina, Tom Zerucha
+ * Copyright (C) 2002 Richard Henderson
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+#include <linux/pci.h>
+#include <linux/selection.h>
+#include <asm/io.h>
+#include <video/tgafb.h>
+#include <linux/selection.h>
+
+/*
+ * Local functions.
+ */
+
+static int tgafb_check_var(struct fb_var_screeninfo *, struct fb_info *);
+static int tgafb_set_par(struct fb_info *);
+static void tgafb_set_pll(struct tga_par *, int);
+static int tgafb_setcolreg(unsigned, unsigned, unsigned, unsigned,
+ unsigned, struct fb_info *);
+static int tgafb_blank(int, struct fb_info *);
+static void tgafb_init_fix(struct fb_info *);
+
+static void tgafb_imageblit(struct fb_info *, const struct fb_image *);
+static void tgafb_fillrect(struct fb_info *, const struct fb_fillrect *);
+static void tgafb_copyarea(struct fb_info *, const struct fb_copyarea *);
+
+static int tgafb_pci_register(struct pci_dev *, const struct pci_device_id *);
+#ifdef MODULE
+static void tgafb_pci_unregister(struct pci_dev *);
+#endif
+
+static const char *mode_option = "640x480@60";
+
+
+/*
+ * Frame buffer operations
+ */
+
+static struct fb_ops tgafb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = tgafb_check_var,
+ .fb_set_par = tgafb_set_par,
+ .fb_setcolreg = tgafb_setcolreg,
+ .fb_blank = tgafb_blank,
+ .fb_fillrect = tgafb_fillrect,
+ .fb_copyarea = tgafb_copyarea,
+ .fb_imageblit = tgafb_imageblit,
+ .fb_cursor = soft_cursor,
+};
+
+
+/*
+ * PCI registration operations
+ */
+
+static struct pci_device_id const tgafb_pci_table[] = {
+ { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TGA, PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, 0 }
+};
+
+static struct pci_driver tgafb_driver = {
+ .name = "tgafb",
+ .id_table = tgafb_pci_table,
+ .probe = tgafb_pci_register,
+ .remove = __devexit_p(tgafb_pci_unregister),
+};
+
+
+/**
+ * tgafb_check_var - Optional function. Validates a var passed in.
+ * @var: frame buffer variable screen structure
+ * @info: frame buffer structure that represents a single frame buffer
+ */
+static int
+tgafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct tga_par *par = (struct tga_par *)info->par;
+
+ if (par->tga_type == TGA_TYPE_8PLANE) {
+ if (var->bits_per_pixel != 8)
+ return -EINVAL;
+ } else {
+ if (var->bits_per_pixel != 32)
+ return -EINVAL;
+ }
+
+ if (var->xres_virtual != var->xres || var->yres_virtual != var->yres)
+ return -EINVAL;
+ if (var->nonstd)
+ return -EINVAL;
+ if (1000000000 / var->pixclock > TGA_PLL_MAX_FREQ)
+ return -EINVAL;
+ if ((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED)
+ return -EINVAL;
+
+ /* Some of the acceleration routines assume the line width is
+ a multiple of 64 bytes. */
+ if (var->xres * (par->tga_type == TGA_TYPE_8PLANE ? 1 : 4) % 64)
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * tgafb_set_par - Optional function. Alters the hardware state.
+ * @info: frame buffer structure that represents a single frame buffer
+ */
+static int
+tgafb_set_par(struct fb_info *info)
+{
+ static unsigned int const deep_presets[4] = {
+ 0x00014000,
+ 0x0001440d,
+ 0xffffffff,
+ 0x0001441d
+ };
+ static unsigned int const rasterop_presets[4] = {
+ 0x00000003,
+ 0x00000303,
+ 0xffffffff,
+ 0x00000303
+ };
+ static unsigned int const mode_presets[4] = {
+ 0x00002000,
+ 0x00002300,
+ 0xffffffff,
+ 0x00002300
+ };
+ static unsigned int const base_addr_presets[4] = {
+ 0x00000000,
+ 0x00000001,
+ 0xffffffff,
+ 0x00000001
+ };
+
+ struct tga_par *par = (struct tga_par *) info->par;
+ u32 htimings, vtimings, pll_freq;
+ u8 tga_type;
+ int i, j;
+
+ /* Encode video timings. */
+ htimings = (((info->var.xres/4) & TGA_HORIZ_ACT_LSB)
+ | (((info->var.xres/4) & 0x600 << 19) & TGA_HORIZ_ACT_MSB));
+ vtimings = (info->var.yres & TGA_VERT_ACTIVE);
+ htimings |= ((info->var.right_margin/4) << 9) & TGA_HORIZ_FP;
+ vtimings |= (info->var.lower_margin << 11) & TGA_VERT_FP;
+ htimings |= ((info->var.hsync_len/4) << 14) & TGA_HORIZ_SYNC;
+ vtimings |= (info->var.vsync_len << 16) & TGA_VERT_SYNC;
+ htimings |= ((info->var.left_margin/4) << 21) & TGA_HORIZ_BP;
+ vtimings |= (info->var.upper_margin << 22) & TGA_VERT_BP;
+
+ if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
+ htimings |= TGA_HORIZ_POLARITY;
+ if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
+ vtimings |= TGA_VERT_POLARITY;
+
+ par->htimings = htimings;
+ par->vtimings = vtimings;
+
+ par->sync_on_green = !!(info->var.sync & FB_SYNC_ON_GREEN);
+
+ /* Store other useful values in par. */
+ par->xres = info->var.xres;
+ par->yres = info->var.yres;
+ par->pll_freq = pll_freq = 1000000000 / info->var.pixclock;
+ par->bits_per_pixel = info->var.bits_per_pixel;
+
+ tga_type = par->tga_type;
+
+ /* First, disable video. */
+ TGA_WRITE_REG(par, TGA_VALID_VIDEO | TGA_VALID_BLANK, TGA_VALID_REG);
+
+ /* Write the DEEP register. */
+ while (TGA_READ_REG(par, TGA_CMD_STAT_REG) & 1) /* wait for not busy */
+ continue;
+ mb();
+ TGA_WRITE_REG(par, deep_presets[tga_type], TGA_DEEP_REG);
+ while (TGA_READ_REG(par, TGA_CMD_STAT_REG) & 1) /* wait for not busy */
+ continue;
+ mb();
+
+ /* Write some more registers. */
+ TGA_WRITE_REG(par, rasterop_presets[tga_type], TGA_RASTEROP_REG);
+ TGA_WRITE_REG(par, mode_presets[tga_type], TGA_MODE_REG);
+ TGA_WRITE_REG(par, base_addr_presets[tga_type], TGA_BASE_ADDR_REG);
+
+ /* Calculate & write the PLL. */
+ tgafb_set_pll(par, pll_freq);
+
+ /* Write some more registers. */
+ TGA_WRITE_REG(par, 0xffffffff, TGA_PLANEMASK_REG);
+ TGA_WRITE_REG(par, 0xffffffff, TGA_PIXELMASK_REG);
+
+ /* Init video timing regs. */
+ TGA_WRITE_REG(par, htimings, TGA_HORIZ_REG);
+ TGA_WRITE_REG(par, vtimings, TGA_VERT_REG);
+
+ /* Initalise RAMDAC. */
+ if (tga_type == TGA_TYPE_8PLANE) {
+
+ /* Init BT485 RAMDAC registers. */
+ BT485_WRITE(par, 0xa2 | (par->sync_on_green ? 0x8 : 0x0),
+ BT485_CMD_0);
+ BT485_WRITE(par, 0x01, BT485_ADDR_PAL_WRITE);
+ BT485_WRITE(par, 0x14, BT485_CMD_3); /* cursor 64x64 */
+ BT485_WRITE(par, 0x40, BT485_CMD_1);
+ BT485_WRITE(par, 0x20, BT485_CMD_2); /* cursor off, for now */
+ BT485_WRITE(par, 0xff, BT485_PIXEL_MASK);
+
+ /* Fill palette registers. */
+ BT485_WRITE(par, 0x00, BT485_ADDR_PAL_WRITE);
+ TGA_WRITE_REG(par, BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG);
+
+ for (i = 0; i < 16; i++) {
+ j = color_table[i];
+ TGA_WRITE_REG(par, default_red[j]|(BT485_DATA_PAL<<8),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, default_grn[j]|(BT485_DATA_PAL<<8),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, default_blu[j]|(BT485_DATA_PAL<<8),
+ TGA_RAMDAC_REG);
+ }
+ for (i = 0; i < 240*3; i += 4) {
+ TGA_WRITE_REG(par, 0x55|(BT485_DATA_PAL<<8),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00|(BT485_DATA_PAL<<8),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00|(BT485_DATA_PAL<<8),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00|(BT485_DATA_PAL<<8),
+ TGA_RAMDAC_REG);
+ }
+
+ } else { /* 24-plane or 24plusZ */
+
+ /* Init BT463 registers. */
+ BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_0, 0x40);
+ BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_1, 0x08);
+ BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_2,
+ (par->sync_on_green ? 0x80 : 0x40));
+
+ BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_0, 0xff);
+ BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_1, 0xff);
+ BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_2, 0xff);
+ BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_3, 0x0f);
+
+ BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_0, 0x00);
+ BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_1, 0x00);
+ BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_2, 0x00);
+ BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_3, 0x00);
+
+ /* Fill the palette. */
+ BT463_LOAD_ADDR(par, 0x0000);
+ TGA_WRITE_REG(par, BT463_PALETTE<<2, TGA_RAMDAC_REG);
+
+ for (i = 0; i < 16; i++) {
+ j = color_table[i];
+ TGA_WRITE_REG(par, default_red[j]|(BT463_PALETTE<<10),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, default_grn[j]|(BT463_PALETTE<<10),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, default_blu[j]|(BT463_PALETTE<<10),
+ TGA_RAMDAC_REG);
+ }
+ for (i = 0; i < 512*3; i += 4) {
+ TGA_WRITE_REG(par, 0x55|(BT463_PALETTE<<10),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00|(BT463_PALETTE<<10),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00|(BT463_PALETTE<<10),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00|(BT463_PALETTE<<10),
+ TGA_RAMDAC_REG);
+ }
+
+ /* Fill window type table after start of vertical retrace. */
+ while (!(TGA_READ_REG(par, TGA_INTR_STAT_REG) & 0x01))
+ continue;
+ TGA_WRITE_REG(par, 0x01, TGA_INTR_STAT_REG);
+ mb();
+ while (!(TGA_READ_REG(par, TGA_INTR_STAT_REG) & 0x01))
+ continue;
+ TGA_WRITE_REG(par, 0x01, TGA_INTR_STAT_REG);
+
+ BT463_LOAD_ADDR(par, BT463_WINDOW_TYPE_BASE);
+ TGA_WRITE_REG(par, BT463_REG_ACC<<2, TGA_RAMDAC_SETUP_REG);
+
+ for (i = 0; i < 16; i++) {
+ TGA_WRITE_REG(par, 0x00|(BT463_REG_ACC<<10),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x01|(BT463_REG_ACC<<10),
+ TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x80|(BT463_REG_ACC<<10),
+ TGA_RAMDAC_REG);
+ }
+
+ }
+
+ /* Finally, enable video scan (and pray for the monitor... :-) */
+ TGA_WRITE_REG(par, TGA_VALID_VIDEO, TGA_VALID_REG);
+
+ return 0;
+}
+
+#define DIFFCHECK(X) \
+do { \
+ if (m <= 0x3f) { \
+ int delta = f - (TGA_PLL_BASE_FREQ * (X)) / (r << shift); \
+ if (delta < 0) \
+ delta = -delta; \
+ if (delta < min_diff) \
+ min_diff = delta, vm = m, va = a, vr = r; \
+ } \
+} while (0)
+
+static void
+tgafb_set_pll(struct tga_par *par, int f)
+{
+ int n, shift, base, min_diff, target;
+ int r,a,m,vm = 34, va = 1, vr = 30;
+
+ for (r = 0 ; r < 12 ; r++)
+ TGA_WRITE_REG(par, !r, TGA_CLOCK_REG);
+
+ if (f > TGA_PLL_MAX_FREQ)
+ f = TGA_PLL_MAX_FREQ;
+
+ if (f >= TGA_PLL_MAX_FREQ / 2)
+ shift = 0;
+ else if (f >= TGA_PLL_MAX_FREQ / 4)
+ shift = 1;
+ else
+ shift = 2;
+
+ TGA_WRITE_REG(par, shift & 1, TGA_CLOCK_REG);
+ TGA_WRITE_REG(par, shift >> 1, TGA_CLOCK_REG);
+
+ for (r = 0 ; r < 10 ; r++)
+ TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
+
+ if (f <= 120000) {
+ TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
+ TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
+ }
+ else if (f <= 200000) {
+ TGA_WRITE_REG(par, 1, TGA_CLOCK_REG);
+ TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
+ }
+ else {
+ TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
+ TGA_WRITE_REG(par, 1, TGA_CLOCK_REG);
+ }
+
+ TGA_WRITE_REG(par, 1, TGA_CLOCK_REG);
+ TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
+ TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
+ TGA_WRITE_REG(par, 1, TGA_CLOCK_REG);
+ TGA_WRITE_REG(par, 0, TGA_CLOCK_REG);
+ TGA_WRITE_REG(par, 1, TGA_CLOCK_REG);
+
+ target = (f << shift) / TGA_PLL_BASE_FREQ;
+ min_diff = TGA_PLL_MAX_FREQ;
+
+ r = 7 / target;
+ if (!r) r = 1;
+
+ base = target * r;
+ while (base < 449) {
+ for (n = base < 7 ? 7 : base; n < base + target && n < 449; n++) {
+ m = ((n + 3) / 7) - 1;
+ a = 0;
+ DIFFCHECK((m + 1) * 7);
+ m++;
+ DIFFCHECK((m + 1) * 7);
+ m = (n / 6) - 1;
+ if ((a = n % 6))
+ DIFFCHECK(n);
+ }
+ r++;
+ base += target;
+ }
+
+ vr--;
+
+ for (r = 0; r < 8; r++)
+ TGA_WRITE_REG(par, (vm >> r) & 1, TGA_CLOCK_REG);
+ for (r = 0; r < 8 ; r++)
+ TGA_WRITE_REG(par, (va >> r) & 1, TGA_CLOCK_REG);
+ for (r = 0; r < 7 ; r++)
+ TGA_WRITE_REG(par, (vr >> r) & 1, TGA_CLOCK_REG);
+ TGA_WRITE_REG(par, ((vr >> 7) & 1)|2, TGA_CLOCK_REG);
+}
+
+
+/**
+ * tgafb_setcolreg - Optional function. Sets a color register.
+ * @regno: boolean, 0 copy local, 1 get_user() function
+ * @red: frame buffer colormap structure
+ * @green: The green value which can be up to 16 bits wide
+ * @blue: The blue value which can be up to 16 bits wide.
+ * @transp: If supported the alpha value which can be up to 16 bits wide.
+ * @info: frame buffer info structure
+ */
+static int
+tgafb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue,
+ unsigned transp, struct fb_info *info)
+{
+ struct tga_par *par = (struct tga_par *) info->par;
+
+ if (regno > 255)
+ return 1;
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ if (par->tga_type == TGA_TYPE_8PLANE) {
+ BT485_WRITE(par, regno, BT485_ADDR_PAL_WRITE);
+ TGA_WRITE_REG(par, BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG);
+ TGA_WRITE_REG(par, red|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, green|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, blue|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG);
+ } else if (regno < 16) {
+ u32 value = (red << 16) | (green << 8) | blue;
+ ((u32 *)info->pseudo_palette)[regno] = value;
+ }
+
+ return 0;
+}
+
+
+/**
+ * tgafb_blank - Optional function. Blanks the display.
+ * @blank_mode: the blank mode we want.
+ * @info: frame buffer structure that represents a single frame buffer
+ */
+static int
+tgafb_blank(int blank, struct fb_info *info)
+{
+ struct tga_par *par = (struct tga_par *) info->par;
+ u32 vhcr, vvcr, vvvr;
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ vhcr = TGA_READ_REG(par, TGA_HORIZ_REG);
+ vvcr = TGA_READ_REG(par, TGA_VERT_REG);
+ vvvr = TGA_READ_REG(par, TGA_VALID_REG);
+ vvvr &= ~(TGA_VALID_VIDEO | TGA_VALID_BLANK);
+
+ switch (blank) {
+ case FB_BLANK_UNBLANK: /* Unblanking */
+ if (par->vesa_blanked) {
+ TGA_WRITE_REG(par, vhcr & 0xbfffffff, TGA_HORIZ_REG);
+ TGA_WRITE_REG(par, vvcr & 0xbfffffff, TGA_VERT_REG);
+ par->vesa_blanked = 0;
+ }
+ TGA_WRITE_REG(par, vvvr | TGA_VALID_VIDEO, TGA_VALID_REG);
+ break;
+
+ case FB_BLANK_NORMAL: /* Normal blanking */
+ TGA_WRITE_REG(par, vvvr | TGA_VALID_VIDEO | TGA_VALID_BLANK,
+ TGA_VALID_REG);
+ break;
+
+ case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
+ TGA_WRITE_REG(par, vvcr | 0x40000000, TGA_VERT_REG);
+ TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG);
+ par->vesa_blanked = 1;
+ break;
+
+ case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
+ TGA_WRITE_REG(par, vhcr | 0x40000000, TGA_HORIZ_REG);
+ TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG);
+ par->vesa_blanked = 1;
+ break;
+
+ case FB_BLANK_POWERDOWN: /* Poweroff */
+ TGA_WRITE_REG(par, vhcr | 0x40000000, TGA_HORIZ_REG);
+ TGA_WRITE_REG(par, vvcr | 0x40000000, TGA_VERT_REG);
+ TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG);
+ par->vesa_blanked = 1;
+ break;
+ }
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+
+/*
+ * Acceleration.
+ */
+
+/**
+ * tgafb_imageblit - REQUIRED function. Can use generic routines if
+ * non acclerated hardware and packed pixel based.
+ * Copies a image from system memory to the screen.
+ *
+ * @info: frame buffer structure that represents a single frame buffer
+ * @image: structure defining the image.
+ */
+static void
+tgafb_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+ static unsigned char const bitrev[256] = {
+ 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
+ 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
+ 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
+ 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
+ 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
+ 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
+ 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
+ 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
+ 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
+ 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
+ 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
+ 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
+ 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
+ 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
+ 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
+ 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
+ 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
+ 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
+ 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
+ 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
+ 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
+ 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
+ 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
+ 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
+ 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
+ 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
+ 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
+ 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
+ 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
+ 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
+ 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
+ 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
+ };
+
+ struct tga_par *par = (struct tga_par *) info->par;
+ u32 fgcolor, bgcolor, dx, dy, width, height, vxres, vyres, pixelmask;
+ unsigned long rincr, line_length, shift, pos, is8bpp;
+ unsigned long i, j;
+ const unsigned char *data;
+ void __iomem *regs_base;
+ void __iomem *fb_base;
+
+ dx = image->dx;
+ dy = image->dy;
+ width = image->width;
+ height = image->height;
+ vxres = info->var.xres_virtual;
+ vyres = info->var.yres_virtual;
+ line_length = info->fix.line_length;
+ rincr = (width + 7) / 8;
+
+ /* Crop the image to the screen. */
+ if (dx > vxres || dy > vyres)
+ return;
+ if (dx + width > vxres)
+ width = vxres - dx;
+ if (dy + height > vyres)
+ height = vyres - dy;
+
+ /* For copies that aren't pixel expansion, there's little we
+ can do better than the generic code. */
+ /* ??? There is a DMA write mode; I wonder if that could be
+ made to pull the data from the image buffer... */
+ if (image->depth > 1) {
+ cfb_imageblit(info, image);
+ return;
+ }
+
+ regs_base = par->tga_regs_base;
+ fb_base = par->tga_fb_base;
+ is8bpp = info->var.bits_per_pixel == 8;
+
+ /* Expand the color values to fill 32-bits. */
+ /* ??? Would be nice to notice colour changes elsewhere, so
+ that we can do this only when necessary. */
+ fgcolor = image->fg_color;
+ bgcolor = image->bg_color;
+ if (is8bpp) {
+ fgcolor |= fgcolor << 8;
+ fgcolor |= fgcolor << 16;
+ bgcolor |= bgcolor << 8;
+ bgcolor |= bgcolor << 16;
+ } else {
+ if (fgcolor < 16)
+ fgcolor = ((u32 *)info->pseudo_palette)[fgcolor];
+ if (bgcolor < 16)
+ bgcolor = ((u32 *)info->pseudo_palette)[bgcolor];
+ }
+ __raw_writel(fgcolor, regs_base + TGA_FOREGROUND_REG);
+ __raw_writel(bgcolor, regs_base + TGA_BACKGROUND_REG);
+
+ /* Acquire proper alignment; set up the PIXELMASK register
+ so that we only write the proper character cell. */
+ pos = dy * line_length;
+ if (is8bpp) {
+ pos += dx;
+ shift = pos & 3;
+ pos &= -4;
+ } else {
+ pos += dx * 4;
+ shift = (pos & 7) >> 2;
+ pos &= -8;
+ }
+
+ data = (const unsigned char *) image->data;
+
+ /* Enable opaque stipple mode. */
+ __raw_writel((is8bpp
+ ? TGA_MODE_SBM_8BPP | TGA_MODE_OPAQUE_STIPPLE
+ : TGA_MODE_SBM_24BPP | TGA_MODE_OPAQUE_STIPPLE),
+ regs_base + TGA_MODE_REG);
+
+ if (width + shift <= 32) {
+ unsigned long bwidth;
+
+ /* Handle common case of imaging a single character, in
+ a font less than 32 pixels wide. */
+
+ pixelmask = (1 << width) - 1;
+ pixelmask <<= shift;
+ __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
+ wmb();
+
+ bwidth = (width + 7) / 8;
+
+ for (i = 0; i < height; ++i) {
+ u32 mask = 0;
+
+ /* The image data is bit big endian; we need
+ little endian. */
+ for (j = 0; j < bwidth; ++j)
+ mask |= bitrev[data[j]] << (j * 8);
+
+ __raw_writel(mask << shift, fb_base + pos);
+
+ pos += line_length;
+ data += rincr;
+ }
+ wmb();
+ __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG);
+ } else if (shift == 0) {
+ unsigned long pos0 = pos;
+ const unsigned char *data0 = data;
+ unsigned long bincr = (is8bpp ? 8 : 8*4);
+ unsigned long bwidth;
+
+ /* Handle another common case in which accel_putcs
+ generates a large bitmap, which happens to be aligned.
+ Allow the tail to be misaligned. This case is
+ interesting because we've not got to hold partial
+ bytes across the words being written. */
+
+ wmb();
+
+ bwidth = (width / 8) & -4;
+ for (i = 0; i < height; ++i) {
+ for (j = 0; j < bwidth; j += 4) {
+ u32 mask = 0;
+ mask |= bitrev[data[j+0]] << (0 * 8);
+ mask |= bitrev[data[j+1]] << (1 * 8);
+ mask |= bitrev[data[j+2]] << (2 * 8);
+ mask |= bitrev[data[j+3]] << (3 * 8);
+ __raw_writel(mask, fb_base + pos + j*bincr);
+ }
+ pos += line_length;
+ data += rincr;
+ }
+ wmb();
+
+ pixelmask = (1ul << (width & 31)) - 1;
+ if (pixelmask) {
+ __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
+ wmb();
+
+ pos = pos0 + bwidth*bincr;
+ data = data0 + bwidth;
+ bwidth = ((width & 31) + 7) / 8;
+
+ for (i = 0; i < height; ++i) {
+ u32 mask = 0;
+ for (j = 0; j < bwidth; ++j)
+ mask |= bitrev[data[j]] << (j * 8);
+ __raw_writel(mask, fb_base + pos);
+ pos += line_length;
+ data += rincr;
+ }
+ wmb();
+ __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG);
+ }
+ } else {
+ unsigned long pos0 = pos;
+ const unsigned char *data0 = data;
+ unsigned long bincr = (is8bpp ? 8 : 8*4);
+ unsigned long bwidth;
+
+ /* Finally, handle the generic case of misaligned start.
+ Here we split the write into 16-bit spans. This allows
+ us to use only one pixel mask, instead of four as would
+ be required by writing 24-bit spans. */
+
+ pixelmask = 0xffff << shift;
+ __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
+ wmb();
+
+ bwidth = (width / 8) & -2;
+ for (i = 0; i < height; ++i) {
+ for (j = 0; j < bwidth; j += 2) {
+ u32 mask = 0;
+ mask |= bitrev[data[j+0]] << (0 * 8);
+ mask |= bitrev[data[j+1]] << (1 * 8);
+ mask <<= shift;
+ __raw_writel(mask, fb_base + pos + j*bincr);
+ }
+ pos += line_length;
+ data += rincr;
+ }
+ wmb();
+
+ pixelmask = ((1ul << (width & 15)) - 1) << shift;
+ if (pixelmask) {
+ __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
+ wmb();
+
+ pos = pos0 + bwidth*bincr;
+ data = data0 + bwidth;
+ bwidth = (width & 15) > 8;
+
+ for (i = 0; i < height; ++i) {
+ u32 mask = bitrev[data[0]];
+ if (bwidth)
+ mask |= bitrev[data[1]] << 8;
+ mask <<= shift;
+ __raw_writel(mask, fb_base + pos);
+ pos += line_length;
+ data += rincr;
+ }
+ wmb();
+ }
+ __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG);
+ }
+
+ /* Disable opaque stipple mode. */
+ __raw_writel((is8bpp
+ ? TGA_MODE_SBM_8BPP | TGA_MODE_SIMPLE
+ : TGA_MODE_SBM_24BPP | TGA_MODE_SIMPLE),
+ regs_base + TGA_MODE_REG);
+}
+
+/**
+ * tgafb_fillrect - REQUIRED function. Can use generic routines if
+ * non acclerated hardware and packed pixel based.
+ * Draws a rectangle on the screen.
+ *
+ * @info: frame buffer structure that represents a single frame buffer
+ * @rect: structure defining the rectagle and operation.
+ */
+static void
+tgafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
+{
+ struct tga_par *par = (struct tga_par *) info->par;
+ int is8bpp = info->var.bits_per_pixel == 8;
+ u32 dx, dy, width, height, vxres, vyres, color;
+ unsigned long pos, align, line_length, i, j;
+ void __iomem *regs_base;
+ void __iomem *fb_base;
+
+ dx = rect->dx;
+ dy = rect->dy;
+ width = rect->width;
+ height = rect->height;
+ vxres = info->var.xres_virtual;
+ vyres = info->var.yres_virtual;
+ line_length = info->fix.line_length;
+ regs_base = par->tga_regs_base;
+ fb_base = par->tga_fb_base;
+
+ /* Crop the rectangle to the screen. */
+ if (dx > vxres || dy > vyres || !width || !height)
+ return;
+ if (dx + width > vxres)
+ width = vxres - dx;
+ if (dy + height > vyres)
+ height = vyres - dy;
+
+ pos = dy * line_length + dx * (is8bpp ? 1 : 4);
+
+ /* ??? We could implement ROP_XOR with opaque fill mode
+ and a RasterOp setting of GXxor, but as far as I can
+ tell, this mode is not actually used in the kernel.
+ Thus I am ignoring it for now. */
+ if (rect->rop != ROP_COPY) {
+ cfb_fillrect(info, rect);
+ return;
+ }
+
+ /* Expand the color value to fill 8 pixels. */
+ color = rect->color;
+ if (is8bpp) {
+ color |= color << 8;
+ color |= color << 16;
+ __raw_writel(color, regs_base + TGA_BLOCK_COLOR0_REG);
+ __raw_writel(color, regs_base + TGA_BLOCK_COLOR1_REG);
+ } else {
+ if (color < 16)
+ color = ((u32 *)info->pseudo_palette)[color];
+ __raw_writel(color, regs_base + TGA_BLOCK_COLOR0_REG);
+ __raw_writel(color, regs_base + TGA_BLOCK_COLOR1_REG);
+ __raw_writel(color, regs_base + TGA_BLOCK_COLOR2_REG);
+ __raw_writel(color, regs_base + TGA_BLOCK_COLOR3_REG);
+ __raw_writel(color, regs_base + TGA_BLOCK_COLOR4_REG);
+ __raw_writel(color, regs_base + TGA_BLOCK_COLOR5_REG);
+ __raw_writel(color, regs_base + TGA_BLOCK_COLOR6_REG);
+ __raw_writel(color, regs_base + TGA_BLOCK_COLOR7_REG);
+ }
+
+ /* The DATA register holds the fill mask for block fill mode.
+ Since we're not stippling, this is all ones. */
+ __raw_writel(0xffffffff, regs_base + TGA_DATA_REG);
+
+ /* Enable block fill mode. */
+ __raw_writel((is8bpp
+ ? TGA_MODE_SBM_8BPP | TGA_MODE_BLOCK_FILL
+ : TGA_MODE_SBM_24BPP | TGA_MODE_BLOCK_FILL),
+ regs_base + TGA_MODE_REG);
+ wmb();
+
+ /* We can fill 2k pixels per operation. Notice blocks that fit
+ the width of the screen so that we can take advantage of this
+ and fill more than one line per write. */
+ if (width == line_length)
+ width *= height, height = 1;
+
+ /* The write into the frame buffer must be aligned to 4 bytes,
+ but we are allowed to encode the offset within the word in
+ the data word written. */
+ align = (pos & 3) << 16;
+ pos &= -4;
+
+ if (width <= 2048) {
+ u32 data;
+
+ data = (width - 1) | align;
+
+ for (i = 0; i < height; ++i) {
+ __raw_writel(data, fb_base + pos);
+ pos += line_length;
+ }
+ } else {
+ unsigned long Bpp = (is8bpp ? 1 : 4);
+ unsigned long nwidth = width & -2048;
+ u32 fdata, ldata;
+
+ fdata = (2048 - 1) | align;
+ ldata = ((width & 2047) - 1) | align;
+
+ for (i = 0; i < height; ++i) {
+ for (j = 0; j < nwidth; j += 2048)
+ __raw_writel(fdata, fb_base + pos + j*Bpp);
+ if (j < width)
+ __raw_writel(ldata, fb_base + pos + j*Bpp);
+ pos += line_length;
+ }
+ }
+ wmb();
+
+ /* Disable block fill mode. */
+ __raw_writel((is8bpp
+ ? TGA_MODE_SBM_8BPP | TGA_MODE_SIMPLE
+ : TGA_MODE_SBM_24BPP | TGA_MODE_SIMPLE),
+ regs_base + TGA_MODE_REG);
+}
+
+/**
+ * tgafb_copyarea - REQUIRED function. Can use generic routines if
+ * non acclerated hardware and packed pixel based.
+ * Copies on area of the screen to another area.
+ *
+ * @info: frame buffer structure that represents a single frame buffer
+ * @area: structure defining the source and destination.
+ */
+
+/* Handle the special case of copying entire lines, e.g. during scrolling.
+ We can avoid a lot of needless computation in this case. In the 8bpp
+ case we need to use the COPY64 registers instead of mask writes into
+ the frame buffer to achieve maximum performance. */
+
+static inline void
+copyarea_line_8bpp(struct fb_info *info, u32 dy, u32 sy,
+ u32 height, u32 width)
+{
+ struct tga_par *par = (struct tga_par *) info->par;
+ void __iomem *tga_regs = par->tga_regs_base;
+ unsigned long dpos, spos, i, n64;
+
+ /* Set up the MODE and PIXELSHIFT registers. */
+ __raw_writel(TGA_MODE_SBM_8BPP | TGA_MODE_COPY, tga_regs+TGA_MODE_REG);
+ __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG);
+ wmb();
+
+ n64 = (height * width) / 64;
+
+ if (dy < sy) {
+ spos = (sy + height) * width;
+ dpos = (dy + height) * width;
+
+ for (i = 0; i < n64; ++i) {
+ spos -= 64;
+ dpos -= 64;
+ __raw_writel(spos, tga_regs+TGA_COPY64_SRC);
+ wmb();
+ __raw_writel(dpos, tga_regs+TGA_COPY64_DST);
+ wmb();
+ }
+ } else {
+ spos = sy * width;
+ dpos = dy * width;
+
+ for (i = 0; i < n64; ++i) {
+ __raw_writel(spos, tga_regs+TGA_COPY64_SRC);
+ wmb();
+ __raw_writel(dpos, tga_regs+TGA_COPY64_DST);
+ wmb();
+ spos += 64;
+ dpos += 64;
+ }
+ }
+
+ /* Reset the MODE register to normal. */
+ __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG);
+}
+
+static inline void
+copyarea_line_32bpp(struct fb_info *info, u32 dy, u32 sy,
+ u32 height, u32 width)
+{
+ struct tga_par *par = (struct tga_par *) info->par;
+ void __iomem *tga_regs = par->tga_regs_base;
+ void __iomem *tga_fb = par->tga_fb_base;
+ void __iomem *src;
+ void __iomem *dst;
+ unsigned long i, n16;
+
+ /* Set up the MODE and PIXELSHIFT registers. */
+ __raw_writel(TGA_MODE_SBM_24BPP | TGA_MODE_COPY, tga_regs+TGA_MODE_REG);
+ __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG);
+ wmb();
+
+ n16 = (height * width) / 16;
+
+ if (dy < sy) {
+ src = tga_fb + (sy + height) * width * 4;
+ dst = tga_fb + (dy + height) * width * 4;
+
+ for (i = 0; i < n16; ++i) {
+ src -= 64;
+ dst -= 64;
+ __raw_writel(0xffff, src);
+ wmb();
+ __raw_writel(0xffff, dst);
+ wmb();
+ }
+ } else {
+ src = tga_fb + sy * width * 4;
+ dst = tga_fb + dy * width * 4;
+
+ for (i = 0; i < n16; ++i) {
+ __raw_writel(0xffff, src);
+ wmb();
+ __raw_writel(0xffff, dst);
+ wmb();
+ src += 64;
+ dst += 64;
+ }
+ }
+
+ /* Reset the MODE register to normal. */
+ __raw_writel(TGA_MODE_SBM_24BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG);
+}
+
+/* The general case of forward copy in 8bpp mode. */
+static inline void
+copyarea_foreward_8bpp(struct fb_info *info, u32 dx, u32 dy, u32 sx, u32 sy,
+ u32 height, u32 width, u32 line_length)
+{
+ struct tga_par *par = (struct tga_par *) info->par;
+ unsigned long i, copied, left;
+ unsigned long dpos, spos, dalign, salign, yincr;
+ u32 smask_first, dmask_first, dmask_last;
+ int pixel_shift, need_prime, need_second;
+ unsigned long n64, n32, xincr_first;
+ void __iomem *tga_regs;
+ void __iomem *tga_fb;
+
+ yincr = line_length;
+ if (dy > sy) {
+ dy += height - 1;
+ sy += height - 1;
+ yincr = -yincr;
+ }
+
+ /* Compute the offsets and alignments in the frame buffer.
+ More than anything else, these control how we do copies. */
+ dpos = dy * line_length + dx;
+ spos = sy * line_length + sx;
+ dalign = dpos & 7;
+ salign = spos & 7;
+ dpos &= -8;
+ spos &= -8;
+
+ /* Compute the value for the PIXELSHIFT register. This controls
+ both non-co-aligned source and destination and copy direction. */
+ if (dalign >= salign)
+ pixel_shift = dalign - salign;
+ else
+ pixel_shift = 8 - (salign - dalign);
+
+ /* Figure out if we need an additional priming step for the
+ residue register. */
+ need_prime = (salign > dalign);
+ if (need_prime)
+ dpos -= 8;
+
+ /* Begin by copying the leading unaligned destination. Copy enough
+ to make the next destination address 32-byte aligned. */
+ copied = 32 - (dalign + (dpos & 31));
+ if (copied == 32)
+ copied = 0;
+ xincr_first = (copied + 7) & -8;
+ smask_first = dmask_first = (1ul << copied) - 1;
+ smask_first <<= salign;
+ dmask_first <<= dalign + need_prime*8;
+ if (need_prime && copied > 24)
+ copied -= 8;
+ left = width - copied;
+
+ /* Care for small copies. */
+ if (copied > width) {
+ u32 t;
+ t = (1ul << width) - 1;
+ t <<= dalign + need_prime*8;
+ dmask_first &= t;
+ left = 0;
+ }
+
+ /* Attempt to use 64-byte copies. This is only possible if the
+ source and destination are co-aligned at 64 bytes. */
+ n64 = need_second = 0;
+ if ((dpos & 63) == (spos & 63)
+ && (height == 1 || line_length % 64 == 0)) {
+ /* We may need a 32-byte copy to ensure 64 byte alignment. */
+ need_second = (dpos + xincr_first) & 63;
+ if ((need_second & 32) != need_second)
+ printk(KERN_ERR "tgafb: need_second wrong\n");
+ if (left >= need_second + 64) {
+ left -= need_second;
+ n64 = left / 64;
+ left %= 64;
+ } else
+ need_second = 0;
+ }
+
+ /* Copy trailing full 32-byte sections. This will be the main
+ loop if the 64 byte loop can't be used. */
+ n32 = left / 32;
+ left %= 32;
+
+ /* Copy the trailing unaligned destination. */
+ dmask_last = (1ul << left) - 1;
+
+ tga_regs = par->tga_regs_base;
+ tga_fb = par->tga_fb_base;
+
+ /* Set up the MODE and PIXELSHIFT registers. */
+ __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_COPY, tga_regs+TGA_MODE_REG);
+ __raw_writel(pixel_shift, tga_regs+TGA_PIXELSHIFT_REG);
+ wmb();
+
+ for (i = 0; i < height; ++i) {
+ unsigned long j;
+ void __iomem *sfb;
+ void __iomem *dfb;
+
+ sfb = tga_fb + spos;
+ dfb = tga_fb + dpos;
+ if (dmask_first) {
+ __raw_writel(smask_first, sfb);
+ wmb();
+ __raw_writel(dmask_first, dfb);
+ wmb();
+ sfb += xincr_first;
+ dfb += xincr_first;
+ }
+
+ if (need_second) {
+ __raw_writel(0xffffffff, sfb);
+ wmb();
+ __raw_writel(0xffffffff, dfb);
+ wmb();
+ sfb += 32;
+ dfb += 32;
+ }
+
+ if (n64 && (((unsigned long)sfb | (unsigned long)dfb) & 63))
+ printk(KERN_ERR
+ "tgafb: misaligned copy64 (s:%p, d:%p)\n",
+ sfb, dfb);
+
+ for (j = 0; j < n64; ++j) {
+ __raw_writel(sfb - tga_fb, tga_regs+TGA_COPY64_SRC);
+ wmb();
+ __raw_writel(dfb - tga_fb, tga_regs+TGA_COPY64_DST);
+ wmb();
+ sfb += 64;
+ dfb += 64;
+ }
+
+ for (j = 0; j < n32; ++j) {
+ __raw_writel(0xffffffff, sfb);
+ wmb();
+ __raw_writel(0xffffffff, dfb);
+ wmb();
+ sfb += 32;
+ dfb += 32;
+ }
+
+ if (dmask_last) {
+ __raw_writel(0xffffffff, sfb);
+ wmb();
+ __raw_writel(dmask_last, dfb);
+ wmb();
+ }
+
+ spos += yincr;
+ dpos += yincr;
+ }
+
+ /* Reset the MODE register to normal. */
+ __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG);
+}
+
+/* The (almost) general case of backward copy in 8bpp mode. */
+static inline void
+copyarea_backward_8bpp(struct fb_info *info, u32 dx, u32 dy, u32 sx, u32 sy,
+ u32 height, u32 width, u32 line_length,
+ const struct fb_copyarea *area)
+{
+ struct tga_par *par = (struct tga_par *) info->par;
+ unsigned long i, left, yincr;
+ unsigned long depos, sepos, dealign, sealign;
+ u32 mask_first, mask_last;
+ unsigned long n32;
+ void __iomem *tga_regs;
+ void __iomem *tga_fb;
+
+ yincr = line_length;
+ if (dy > sy) {
+ dy += height - 1;
+ sy += height - 1;
+ yincr = -yincr;
+ }
+
+ /* Compute the offsets and alignments in the frame buffer.
+ More than anything else, these control how we do copies. */
+ depos = dy * line_length + dx + width;
+ sepos = sy * line_length + sx + width;
+ dealign = depos & 7;
+ sealign = sepos & 7;
+
+ /* ??? The documentation appears to be incorrect (or very
+ misleading) wrt how pixel shifting works in backward copy
+ mode, i.e. when PIXELSHIFT is negative. I give up for now.
+ Do handle the common case of co-aligned backward copies,
+ but frob everything else back on generic code. */
+ if (dealign != sealign) {
+ cfb_copyarea(info, area);
+ return;
+ }
+
+ /* We begin the copy with the trailing pixels of the
+ unaligned destination. */
+ mask_first = (1ul << dealign) - 1;
+ left = width - dealign;
+
+ /* Care for small copies. */
+ if (dealign > width) {
+ mask_first ^= (1ul << (dealign - width)) - 1;
+ left = 0;
+ }
+
+ /* Next copy full words at a time. */
+ n32 = left / 32;
+ left %= 32;
+
+ /* Finally copy the unaligned head of the span. */
+ mask_last = -1 << (32 - left);
+
+ tga_regs = par->tga_regs_base;
+ tga_fb = par->tga_fb_base;
+
+ /* Set up the MODE and PIXELSHIFT registers. */
+ __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_COPY, tga_regs+TGA_MODE_REG);
+ __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG);
+ wmb();
+
+ for (i = 0; i < height; ++i) {
+ unsigned long j;
+ void __iomem *sfb;
+ void __iomem *dfb;
+
+ sfb = tga_fb + sepos;
+ dfb = tga_fb + depos;
+ if (mask_first) {
+ __raw_writel(mask_first, sfb);
+ wmb();
+ __raw_writel(mask_first, dfb);
+ wmb();
+ }
+
+ for (j = 0; j < n32; ++j) {
+ sfb -= 32;
+ dfb -= 32;
+ __raw_writel(0xffffffff, sfb);
+ wmb();
+ __raw_writel(0xffffffff, dfb);
+ wmb();
+ }
+
+ if (mask_last) {
+ sfb -= 32;
+ dfb -= 32;
+ __raw_writel(mask_last, sfb);
+ wmb();
+ __raw_writel(mask_last, dfb);
+ wmb();
+ }
+
+ sepos += yincr;
+ depos += yincr;
+ }
+
+ /* Reset the MODE register to normal. */
+ __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG);
+}
+
+static void
+tgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
+{
+ unsigned long dx, dy, width, height, sx, sy, vxres, vyres;
+ unsigned long line_length, bpp;
+
+ dx = area->dx;
+ dy = area->dy;
+ width = area->width;
+ height = area->height;
+ sx = area->sx;
+ sy = area->sy;
+ vxres = info->var.xres_virtual;
+ vyres = info->var.yres_virtual;
+ line_length = info->fix.line_length;
+
+ /* The top left corners must be in the virtual screen. */
+ if (dx > vxres || sx > vxres || dy > vyres || sy > vyres)
+ return;
+
+ /* Clip the destination. */
+ if (dx + width > vxres)
+ width = vxres - dx;
+ if (dy + height > vyres)
+ height = vyres - dy;
+
+ /* The source must be completely inside the virtual screen. */
+ if (sx + width > vxres || sy + height > vyres)
+ return;
+
+ bpp = info->var.bits_per_pixel;
+
+ /* Detect copies of the entire line. */
+ if (width * (bpp >> 3) == line_length) {
+ if (bpp == 8)
+ copyarea_line_8bpp(info, dy, sy, height, width);
+ else
+ copyarea_line_32bpp(info, dy, sy, height, width);
+ }
+
+ /* ??? The documentation is unclear to me exactly how the pixelshift
+ register works in 32bpp mode. Since I don't have hardware to test,
+ give up for now and fall back on the generic routines. */
+ else if (bpp == 32)
+ cfb_copyarea(info, area);
+
+ /* Detect overlapping source and destination that requires
+ a backward copy. */
+ else if (dy == sy && dx > sx && dx < sx + width)
+ copyarea_backward_8bpp(info, dx, dy, sx, sy, height,
+ width, line_length, area);
+ else
+ copyarea_foreward_8bpp(info, dx, dy, sx, sy, height,
+ width, line_length);
+}
+
+
+/*
+ * Initialisation
+ */
+
+static void
+tgafb_init_fix(struct fb_info *info)
+{
+ struct tga_par *par = (struct tga_par *)info->par;
+ u8 tga_type = par->tga_type;
+ const char *tga_type_name;
+
+ switch (tga_type) {
+ case TGA_TYPE_8PLANE:
+ tga_type_name = "Digital ZLXp-E1";
+ break;
+ case TGA_TYPE_24PLANE:
+ tga_type_name = "Digital ZLXp-E2";
+ break;
+ case TGA_TYPE_24PLUSZ:
+ tga_type_name = "Digital ZLXp-E3";
+ break;
+ default:
+ tga_type_name = "Unknown";
+ break;
+ }
+
+ strlcpy(info->fix.id, tga_type_name, sizeof(info->fix.id));
+
+ info->fix.type = FB_TYPE_PACKED_PIXELS;
+ info->fix.type_aux = 0;
+ info->fix.visual = (tga_type == TGA_TYPE_8PLANE
+ ? FB_VISUAL_PSEUDOCOLOR
+ : FB_VISUAL_TRUECOLOR);
+
+ info->fix.line_length = par->xres * (par->bits_per_pixel >> 3);
+ info->fix.smem_start = (size_t) par->tga_fb_base;
+ info->fix.smem_len = info->fix.line_length * par->yres;
+ info->fix.mmio_start = (size_t) par->tga_regs_base;
+ info->fix.mmio_len = 512;
+
+ info->fix.xpanstep = 0;
+ info->fix.ypanstep = 0;
+ info->fix.ywrapstep = 0;
+
+ info->fix.accel = FB_ACCEL_DEC_TGA;
+}
+
+static __devinit int
+tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ static unsigned int const fb_offset_presets[4] = {
+ TGA_8PLANE_FB_OFFSET,
+ TGA_24PLANE_FB_OFFSET,
+ 0xffffffff,
+ TGA_24PLUSZ_FB_OFFSET
+ };
+
+ struct all_info {
+ struct fb_info info;
+ struct tga_par par;
+ u32 pseudo_palette[16];
+ } *all;
+
+ void __iomem *mem_base;
+ unsigned long bar0_start, bar0_len;
+ u8 tga_type;
+ int ret;
+
+ /* Enable device in PCI config. */
+ if (pci_enable_device(pdev)) {
+ printk(KERN_ERR "tgafb: Cannot enable PCI device\n");
+ return -ENODEV;
+ }
+
+ /* Allocate the fb and par structures. */
+ all = kmalloc(sizeof(*all), GFP_KERNEL);
+ if (!all) {
+ printk(KERN_ERR "tgafb: Cannot allocate memory\n");
+ return -ENOMEM;
+ }
+ memset(all, 0, sizeof(*all));
+ pci_set_drvdata(pdev, all);
+
+ /* Request the mem regions. */
+ bar0_start = pci_resource_start(pdev, 0);
+ bar0_len = pci_resource_len(pdev, 0);
+ ret = -ENODEV;
+ if (!request_mem_region (bar0_start, bar0_len, "tgafb")) {
+ printk(KERN_ERR "tgafb: cannot reserve FB region\n");
+ goto err0;
+ }
+
+ /* Map the framebuffer. */
+ mem_base = ioremap(bar0_start, bar0_len);
+ if (!mem_base) {
+ printk(KERN_ERR "tgafb: Cannot map MMIO\n");
+ goto err1;
+ }
+
+ /* Grab info about the card. */
+ tga_type = (readl(mem_base) >> 12) & 0x0f;
+ all->par.pdev = pdev;
+ all->par.tga_mem_base = mem_base;
+ all->par.tga_fb_base = mem_base + fb_offset_presets[tga_type];
+ all->par.tga_regs_base = mem_base + TGA_REGS_OFFSET;
+ all->par.tga_type = tga_type;
+ pci_read_config_byte(pdev, PCI_REVISION_ID, &all->par.tga_chip_rev);
+
+ /* Setup framebuffer. */
+ all->info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
+ FBINFO_HWACCEL_IMAGEBLIT | FBINFO_HWACCEL_FILLRECT;
+ all->info.fbops = &tgafb_ops;
+ all->info.screen_base = all->par.tga_fb_base;
+ all->info.par = &all->par;
+ all->info.pseudo_palette = all->pseudo_palette;
+
+ /* This should give a reasonable default video mode. */
+
+ ret = fb_find_mode(&all->info.var, &all->info, mode_option,
+ NULL, 0, NULL,
+ tga_type == TGA_TYPE_8PLANE ? 8 : 32);
+ if (ret == 0 || ret == 4) {
+ printk(KERN_ERR "tgafb: Could not find valid video mode\n");
+ ret = -EINVAL;
+ goto err1;
+ }
+
+ if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
+ printk(KERN_ERR "tgafb: Could not allocate color map\n");
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ tgafb_set_par(&all->info);
+ tgafb_init_fix(&all->info);
+
+ all->info.device = &pdev->dev;
+ if (register_framebuffer(&all->info) < 0) {
+ printk(KERN_ERR "tgafb: Could not register framebuffer\n");
+ ret = -EINVAL;
+ goto err1;
+ }
+
+ printk(KERN_INFO "tgafb: DC21030 [TGA] detected, rev=0x%02x\n",
+ all->par.tga_chip_rev);
+ printk(KERN_INFO "tgafb: at PCI bus %d, device %d, function %d\n",
+ pdev->bus->number, PCI_SLOT(pdev->devfn),
+ PCI_FUNC(pdev->devfn));
+ printk(KERN_INFO "fb%d: %s frame buffer device at 0x%lx\n",
+ all->info.node, all->info.fix.id, bar0_start);
+
+ return 0;
+
+ err1:
+ release_mem_region(bar0_start, bar0_len);
+ err0:
+ kfree(all);
+ return ret;
+}
+
+#ifdef MODULE
+static void __exit
+tgafb_pci_unregister(struct pci_dev *pdev)
+{
+ struct fb_info *info = pci_get_drvdata(pdev);
+ struct tga_par *par = info->par;
+
+ if (!info)
+ return;
+ unregister_framebuffer(info);
+ iounmap(par->tga_mem_base);
+ release_mem_region(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0));
+ kfree(info);
+}
+
+static void __exit
+tgafb_exit(void)
+{
+ pci_unregister_driver(&tgafb_driver);
+}
+#endif /* MODULE */
+
+#ifndef MODULE
+int __init
+tgafb_setup(char *arg)
+{
+ char *this_opt;
+
+ if (arg && *arg) {
+ while ((this_opt = strsep(&arg, ","))) {
+ if (!*this_opt)
+ continue;
+ if (!strncmp(this_opt, "mode:", 5))
+ mode_option = this_opt+5;
+ else
+ printk(KERN_ERR
+ "tgafb: unknown parameter %s\n",
+ this_opt);
+ }
+ }
+
+ return 0;
+}
+#endif /* !MODULE */
+
+int __init
+tgafb_init(void)
+{
+#ifndef MODULE
+ char *option = NULL;
+
+ if (fb_get_options("tgafb", &option))
+ return -ENODEV;
+ tgafb_setup(option);
+#endif
+ return pci_register_driver(&tgafb_driver);
+}
+
+/*
+ * Modularisation
+ */
+
+module_init(tgafb_init);
+
+#ifdef MODULE
+module_exit(tgafb_exit);
+#endif
+
+MODULE_DESCRIPTION("framebuffer driver for TGA chipset");
+MODULE_LICENSE("GPL");