--- /dev/null
+/*
+ * 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
+ * Copyright (C) 2006, 2007 Maciej W. Rozycki
+ *
+ * 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/bitrev.h>
+#include <linux/compiler.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/selection.h>
+#include <linux/string.h>
+#include <linux/tc.h>
+
+#include <asm/io.h>
+
+#include <video/tgafb.h>
+
+#ifdef CONFIG_TC
+#define TGA_BUS_TC(dev) (dev->bus == &tc_bus_type)
+#else
+#define TGA_BUS_TC(dev) 0
+#endif
+
+/*
+ * 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_pan_display(struct fb_var_screeninfo *var, struct fb_info *info);
+
+static int tgafb_register(struct device *dev);
+static void tgafb_unregister(struct device *dev);
+
+static const char *mode_option;
+static const char *mode_option_pci = "640x480@60";
+static const char *mode_option_tc = "1280x1024@72";
+
+
+static struct pci_driver tgafb_pci_driver;
+static struct tc_driver tgafb_tc_driver;
+
+/*
+ * 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_pan_display = tgafb_pan_display,
+ .fb_fillrect = tgafb_fillrect,
+ .fb_copyarea = tgafb_copyarea,
+ .fb_imageblit = tgafb_imageblit,
+};
+
+
+#ifdef CONFIG_PCI
+/*
+ * PCI registration operations
+ */
+static int tgafb_pci_register(struct pci_dev *, const struct pci_device_id *);
+static void tgafb_pci_unregister(struct pci_dev *);
+
+static struct pci_device_id const tgafb_pci_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TGA) },
+ { }
+};
+MODULE_DEVICE_TABLE(pci, tgafb_pci_table);
+
+static struct pci_driver tgafb_pci_driver = {
+ .name = "tgafb",
+ .id_table = tgafb_pci_table,
+ .probe = tgafb_pci_register,
+ .remove = tgafb_pci_unregister,
+};
+
+static int tgafb_pci_register(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ return tgafb_register(&pdev->dev);
+}
+
+static void tgafb_pci_unregister(struct pci_dev *pdev)
+{
+ tgafb_unregister(&pdev->dev);
+}
+#endif /* CONFIG_PCI */
+
+#ifdef CONFIG_TC
+/*
+ * TC registration operations
+ */
+static int tgafb_tc_register(struct device *);
+static int tgafb_tc_unregister(struct device *);
+
+static struct tc_device_id const tgafb_tc_table[] = {
+ { "DEC ", "PMAGD-AA" },
+ { "DEC ", "PMAGD " },
+ { }
+};
+MODULE_DEVICE_TABLE(tc, tgafb_tc_table);
+
+static struct tc_driver tgafb_tc_driver = {
+ .id_table = tgafb_tc_table,
+ .driver = {
+ .name = "tgafb",
+ .bus = &tc_bus_type,
+ .probe = tgafb_tc_register,
+ .remove = tgafb_tc_unregister,
+ },
+};
+
+static int tgafb_tc_register(struct device *dev)
+{
+ int status = tgafb_register(dev);
+ if (!status)
+ get_device(dev);
+ return status;
+}
+
+static int tgafb_tc_unregister(struct device *dev)
+{
+ put_device(dev);
+ tgafb_unregister(dev);
+ return 0;
+}
+#endif /* CONFIG_TC */
+
+
+/**
+ * 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;
+ }
+ var->red.length = var->green.length = var->blue.length = 8;
+ if (var->bits_per_pixel == 32) {
+ var->red.offset = 16;
+ var->green.offset = 8;
+ var->blue.offset = 0;
+ }
+
+ if (var->xres_virtual != var->xres || var->yres_virtual != var->yres)
+ return -EINVAL;
+ if (var->xres * var->yres * (var->bits_per_pixel >> 3) > info->fix.smem_len)
+ 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 8 bytes. */
+ if (var->xres * (par->tga_type == TGA_TYPE_8PLANE ? 1 : 4) % 8)
+ 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] = {
+ 0x00004000,
+ 0x0000440d,
+ 0xffffffff,
+ 0x0000441d
+ };
+ static unsigned int const rasterop_presets[4] = {
+ 0x00000003,
+ 0x00000303,
+ 0xffffffff,
+ 0x00000303
+ };
+ static unsigned int const mode_presets[4] = {
+ 0x00000000,
+ 0x00000300,
+ 0xffffffff,
+ 0x00000300
+ };
+ static unsigned int const base_addr_presets[4] = {
+ 0x00000000,
+ 0x00000001,
+ 0xffffffff,
+ 0x00000001
+ };
+
+ struct tga_par *par = (struct tga_par *) info->par;
+ int tga_bus_pci = dev_is_pci(par->dev);
+ int tga_bus_tc = TGA_BUS_TC(par->dev);
+ u32 htimings, vtimings, pll_freq;
+ u8 tga_type;
+ int i;
+
+ /* 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;
+ info->fix.line_length = par->xres * (par->bits_per_pixel >> 3);
+
+ 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] |
+ (par->sync_on_green ? 0x0 : 0x00010000),
+ 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);
+
+ /* Initialise RAMDAC. */
+ if (tga_type == TGA_TYPE_8PLANE && tga_bus_pci) {
+
+ /* 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 < 256 * 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 if (tga_type == TGA_TYPE_8PLANE && tga_bus_tc) {
+
+ /* Init BT459 RAMDAC registers. */
+ BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_0, 0x40);
+ BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_1, 0x00);
+ BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_2,
+ (par->sync_on_green ? 0xc0 : 0x40));
+
+ BT459_WRITE(par, BT459_REG_ACC, BT459_CUR_CMD_REG, 0x00);
+
+ /* Fill the palette. */
+ BT459_LOAD_ADDR(par, 0x0000);
+ TGA_WRITE_REG(par, BT459_PALETTE << 2, TGA_RAMDAC_SETUP_REG);
+
+ for (i = 0; i < 256 * 3; i += 4) {
+ TGA_WRITE_REG(par, 0x55, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
+ }
+
+ } else { /* 24-plane or 24plusZ */
+
+ /* Init BT463 RAMDAC 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 ? 0xc0 : 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_SETUP_REG);
+
+#ifdef CONFIG_HW_CONSOLE
+ for (i = 0; i < 16; i++) {
+ int j = color_table[i];
+
+ TGA_WRITE_REG(par, default_red[j], TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, default_grn[j], TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, default_blu[j], TGA_RAMDAC_REG);
+ }
+ for (i = 0; i < 512 * 3; i += 4) {
+#else
+ for (i = 0; i < 528 * 3; i += 4) {
+#endif
+ TGA_WRITE_REG(par, 0x55, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00, 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, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x01, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, 0x00, 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;
+ int tga_bus_pci = dev_is_pci(par->dev);
+ int tga_bus_tc = TGA_BUS_TC(par->dev);
+
+ if (regno > 255)
+ return 1;
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ if (par->tga_type == TGA_TYPE_8PLANE && tga_bus_pci) {
+ 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 (par->tga_type == TGA_TYPE_8PLANE && tga_bus_tc) {
+ BT459_LOAD_ADDR(par, regno);
+ TGA_WRITE_REG(par, BT459_PALETTE << 2, TGA_RAMDAC_SETUP_REG);
+ TGA_WRITE_REG(par, red, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, green, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, blue, TGA_RAMDAC_REG);
+ } else {
+ if (regno < 16) {
+ u32 value = (regno << 16) | (regno << 8) | regno;
+ ((u32 *)info->pseudo_palette)[regno] = value;
+ }
+ BT463_LOAD_ADDR(par, regno);
+ TGA_WRITE_REG(par, BT463_PALETTE << 2, TGA_RAMDAC_SETUP_REG);
+ TGA_WRITE_REG(par, red, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, green, TGA_RAMDAC_REG);
+ TGA_WRITE_REG(par, blue, TGA_RAMDAC_REG);
+ }
+
+ 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.
+ */
+
+static void
+tgafb_mono_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+ 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;
+
+ is8bpp = info->var.bits_per_pixel == 8;
+
+ 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;
+
+ /* A shift below cannot cope with. */
+ if (unlikely(width == 0))
+ return;
+ /* 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;
+
+ regs_base = par->tga_regs_base;
+ fb_base = par->tga_fb_base;
+
+ /* 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 or 32 pixels wide. */
+
+ /* Avoid a shift by 32; width > 0 implied. */
+ pixelmask = (2ul << (width - 1)) - 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 |= bitrev8(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 |= bitrev8(data[j+0]) << (0 * 8);
+ mask |= bitrev8(data[j+1]) << (1 * 8);
+ mask |= bitrev8(data[j+2]) << (2 * 8);
+ mask |= bitrev8(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 |= bitrev8(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 |= bitrev8(data[j+0]) << (0 * 8);
+ mask |= bitrev8(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 = bitrev8(data[0]);
+ if (bwidth)
+ mask |= bitrev8(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);
+}
+
+static void
+tgafb_clut_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+ struct tga_par *par = (struct tga_par *) info->par;
+ u32 color, dx, dy, width, height, vxres, vyres;
+ u32 *palette = ((u32 *)info->pseudo_palette);
+ unsigned long pos, line_length, i, j;
+ const unsigned char *data;
+ void __iomem *regs_base, *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;
+
+ /* 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;
+
+ regs_base = par->tga_regs_base;
+ fb_base = par->tga_fb_base;
+
+ pos = dy * line_length + (dx * 4);
+ data = image->data;
+
+ /* Now copy the image, color_expanding via the palette. */
+ for (i = 0; i < height; i++) {
+ for (j = 0; j < width; j++) {
+ color = palette[*data++];
+ __raw_writel(color, fb_base + pos + j*4);
+ }
+ pos += line_length;
+ }
+}
+
+/**
+ * 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)
+{
+ unsigned int is8bpp = info->var.bits_per_pixel == 8;
+
+ /* If a mono image, regardless of FB depth, go do it. */
+ if (image->depth == 1) {
+ tgafb_mono_imageblit(info, image);
+ return;
+ }
+
+ /* 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 == info->var.bits_per_pixel) {
+ cfb_imageblit(info, image);
+ return;
+ }
+
+ /* If 24-plane FB and the image is 8-plane with CLUT, we can do it. */
+ if (!is8bpp && image->depth == 8) {
+ tgafb_clut_imageblit(info, image);
+ return;
+ }
+
+ /* Silently return... */
+}
+
+/**
+ * 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 (sy < dy) {
+ 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 (sy < dy) {
+ 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 (almost) general case of backward copy in 8bpp mode. */
+static inline void
+copyarea_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 i, yincr;
+ int depos, sepos, backward, last_step, step;
+ u32 mask_last;
+ unsigned n32;
+ void __iomem *tga_regs;
+ void __iomem *tga_fb;
+
+ /* Do acceleration only if we are aligned on 8 pixels */
+ if ((dx | sx | width) & 7) {
+ cfb_copyarea(info, area);
+ return;
+ }
+
+ yincr = line_length;
+ if (dy > sy) {
+ dy += height - 1;
+ sy += height - 1;
+ yincr = -yincr;
+ }
+ backward = dy == sy && dx > sx && dx < sx + width;
+
+ /* Compute the offsets and alignments in the frame buffer.
+ More than anything else, these control how we do copies. */
+ depos = dy * line_length + dx;
+ sepos = sy * line_length + sx;
+ if (backward)
+ depos += width, sepos += width;
+
+ /* Next copy full words at a time. */
+ n32 = width / 32;
+ last_step = width % 32;
+
+ /* Finally copy the unaligned head of the span. */
+ mask_last = (1ul << last_step) - 1;
+
+ if (!backward) {
+ step = 32;
+ last_step = 32;
+ } else {
+ step = -32;
+ last_step = -last_step;
+ sepos -= 32;
+ depos -= 32;
+ }
+
+ 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;
+
+ for (j = 0; j < n32; j++) {
+ if (j < 2 && j + 1 < n32 && !backward &&
+ !(((unsigned long)sfb | (unsigned long)dfb) & 63)) {
+ do {
+ __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;
+ j += 2;
+ } while (j + 1 < n32);
+ j--;
+ continue;
+ }
+ __raw_writel(0xffffffff, sfb);
+ wmb();
+ __raw_writel(0xffffffff, dfb);
+ wmb();
+ sfb += step;
+ dfb += step;
+ }
+
+ if (mask_last) {
+ sfb += last_step - step;
+ dfb += last_step - step;
+ __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 (!(line_length & 63) && 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);
+
+ else
+ copyarea_8bpp(info, dx, dy, sx, sy, height,
+ width, line_length, area);
+}
+
+
+/*
+ * Initialisation
+ */
+
+static void
+tgafb_init_fix(struct fb_info *info)
+{
+ struct tga_par *par = (struct tga_par *)info->par;
+ int tga_bus_pci = dev_is_pci(par->dev);
+ int tga_bus_tc = TGA_BUS_TC(par->dev);
+ u8 tga_type = par->tga_type;
+ const char *tga_type_name = NULL;
+ unsigned memory_size;
+
+ switch (tga_type) {
+ case TGA_TYPE_8PLANE:
+ if (tga_bus_pci)
+ tga_type_name = "Digital ZLXp-E1";
+ if (tga_bus_tc)
+ tga_type_name = "Digital ZLX-E1";
+ memory_size = 2097152;
+ break;
+ case TGA_TYPE_24PLANE:
+ if (tga_bus_pci)
+ tga_type_name = "Digital ZLXp-E2";
+ if (tga_bus_tc)
+ tga_type_name = "Digital ZLX-E2";
+ memory_size = 8388608;
+ break;
+ case TGA_TYPE_24PLUSZ:
+ if (tga_bus_pci)
+ tga_type_name = "Digital ZLXp-E3";
+ if (tga_bus_tc)
+ tga_type_name = "Digital ZLX-E3";
+ memory_size = 16777216;
+ break;
+ }
+ if (!tga_type_name) {
+ tga_type_name = "Unknown";
+ memory_size = 16777216;
+ }
+
+ 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_DIRECTCOLOR);
+
+ info->fix.smem_start = (size_t) par->tga_fb_base;
+ info->fix.smem_len = memory_size;
+ 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;
+
+ /*
+ * These are needed by fb_set_logo_truepalette(), so we
+ * set them here for 24-plane cards.
+ */
+ if (tga_type != TGA_TYPE_8PLANE) {
+ info->var.red.length = 8;
+ info->var.green.length = 8;
+ info->var.blue.length = 8;
+ info->var.red.offset = 16;
+ info->var.green.offset = 8;
+ info->var.blue.offset = 0;
+ }
+}
+
+static int tgafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ /* We just use this to catch switches out of graphics mode. */
+ tgafb_set_par(info); /* A bit of overkill for BASE_ADDR reset. */
+ return 0;
+}
+
+static int tgafb_register(struct device *dev)
+{
+ static const struct fb_videomode modedb_tc = {
+ /* 1280x1024 @ 72 Hz, 76.8 kHz hsync */
+ "1280x1024@72", 0, 1280, 1024, 7645, 224, 28, 33, 3, 160, 3,
+ FB_SYNC_ON_GREEN, FB_VMODE_NONINTERLACED
+ };
+
+ static unsigned int const fb_offset_presets[4] = {
+ TGA_8PLANE_FB_OFFSET,
+ TGA_24PLANE_FB_OFFSET,
+ 0xffffffff,
+ TGA_24PLUSZ_FB_OFFSET
+ };
+
+ const struct fb_videomode *modedb_tga = NULL;
+ resource_size_t bar0_start = 0, bar0_len = 0;
+ const char *mode_option_tga = NULL;
+ int tga_bus_pci = dev_is_pci(dev);
+ int tga_bus_tc = TGA_BUS_TC(dev);
+ unsigned int modedbsize_tga = 0;
+ void __iomem *mem_base;
+ struct fb_info *info;
+ struct tga_par *par;
+ u8 tga_type;
+ int ret = 0;
+
+ /* Enable device in PCI config. */
+ if (tga_bus_pci && pci_enable_device(to_pci_dev(dev))) {
+ printk(KERN_ERR "tgafb: Cannot enable PCI device\n");
+ return -ENODEV;
+ }
+
+ /* Allocate the fb and par structures. */
+ info = framebuffer_alloc(sizeof(struct tga_par), dev);
+ if (!info) {
+ printk(KERN_ERR "tgafb: Cannot allocate memory\n");
+ return -ENOMEM;
+ }
+
+ par = info->par;
+ dev_set_drvdata(dev, info);
+
+ /* Request the mem regions. */
+ ret = -ENODEV;
+ if (tga_bus_pci) {
+ bar0_start = pci_resource_start(to_pci_dev(dev), 0);
+ bar0_len = pci_resource_len(to_pci_dev(dev), 0);
+ }
+ if (tga_bus_tc) {
+ bar0_start = to_tc_dev(dev)->resource.start;
+ bar0_len = to_tc_dev(dev)->resource.end - bar0_start + 1;
+ }
+ 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_nocache(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;
+ par->dev = dev;
+ par->tga_mem_base = mem_base;
+ par->tga_fb_base = mem_base + fb_offset_presets[tga_type];
+ par->tga_regs_base = mem_base + TGA_REGS_OFFSET;
+ par->tga_type = tga_type;
+ if (tga_bus_pci)
+ par->tga_chip_rev = (to_pci_dev(dev))->revision;
+ if (tga_bus_tc)
+ par->tga_chip_rev = TGA_READ_REG(par, TGA_START_REG) & 0xff;
+
+ /* Setup framebuffer. */
+ info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
+ FBINFO_HWACCEL_IMAGEBLIT | FBINFO_HWACCEL_FILLRECT;
+ info->fbops = &tgafb_ops;
+ info->screen_base = par->tga_fb_base;
+ info->pseudo_palette = par->palette;
+
+ /* This should give a reasonable default video mode. */
+ if (tga_bus_pci) {
+ mode_option_tga = mode_option_pci;
+ }
+ if (tga_bus_tc) {
+ mode_option_tga = mode_option_tc;
+ modedb_tga = &modedb_tc;
+ modedbsize_tga = 1;
+ }
+
+ tgafb_init_fix(info);
+
+ ret = fb_find_mode(&info->var, info,
+ mode_option ? mode_option : mode_option_tga,
+ modedb_tga, modedbsize_tga, 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(&info->cmap, 256, 0)) {
+ printk(KERN_ERR "tgafb: Could not allocate color map\n");
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ tgafb_set_par(info);
+
+ if (register_framebuffer(info) < 0) {
+ printk(KERN_ERR "tgafb: Could not register framebuffer\n");
+ ret = -EINVAL;
+ goto err2;
+ }
+
+ if (tga_bus_pci) {
+ pr_info("tgafb: DC21030 [TGA] detected, rev=0x%02x\n",
+ par->tga_chip_rev);
+ pr_info("tgafb: at PCI bus %d, device %d, function %d\n",
+ to_pci_dev(dev)->bus->number,
+ PCI_SLOT(to_pci_dev(dev)->devfn),
+ PCI_FUNC(to_pci_dev(dev)->devfn));
+ }
+ if (tga_bus_tc)
+ pr_info("tgafb: SFB+ detected, rev=0x%02x\n",
+ par->tga_chip_rev);
+ fb_info(info, "%s frame buffer device at 0x%lx\n",
+ info->fix.id, (long)bar0_start);
+
+ return 0;
+
+ err2:
+ fb_dealloc_cmap(&info->cmap);
+ err1:
+ if (mem_base)
+ iounmap(mem_base);
+ release_mem_region(bar0_start, bar0_len);
+ err0:
+ framebuffer_release(info);
+ return ret;
+}
+
+static void tgafb_unregister(struct device *dev)
+{
+ resource_size_t bar0_start = 0, bar0_len = 0;
+ int tga_bus_pci = dev_is_pci(dev);
+ int tga_bus_tc = TGA_BUS_TC(dev);
+ struct fb_info *info = NULL;
+ struct tga_par *par;
+
+ info = dev_get_drvdata(dev);
+ if (!info)
+ return;
+
+ par = info->par;
+ unregister_framebuffer(info);
+ fb_dealloc_cmap(&info->cmap);
+ iounmap(par->tga_mem_base);
+ if (tga_bus_pci) {
+ bar0_start = pci_resource_start(to_pci_dev(dev), 0);
+ bar0_len = pci_resource_len(to_pci_dev(dev), 0);
+ }
+ if (tga_bus_tc) {
+ bar0_start = to_tc_dev(dev)->resource.start;
+ bar0_len = to_tc_dev(dev)->resource.end - bar0_start + 1;
+ }
+ release_mem_region(bar0_start, bar0_len);
+ framebuffer_release(info);
+}
+
+static void tgafb_exit(void)
+{
+ tc_unregister_driver(&tgafb_tc_driver);
+ pci_unregister_driver(&tgafb_pci_driver);
+}
+
+#ifndef MODULE
+static int 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 */
+
+static int tgafb_init(void)
+{
+ int status;
+#ifndef MODULE
+ char *option = NULL;
+
+ if (fb_get_options("tgafb", &option))
+ return -ENODEV;
+ tgafb_setup(option);
+#endif
+ status = pci_register_driver(&tgafb_pci_driver);
+ if (!status)
+ status = tc_register_driver(&tgafb_tc_driver);
+ return status;
+}
+
+/*
+ * Modularisation
+ */
+
+module_init(tgafb_init);
+module_exit(tgafb_exit);
+
+MODULE_DESCRIPTION("Framebuffer driver for TGA/SFB+ chipset");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff