diff options
Diffstat (limited to 'drivers/video/tgafb.c')
| -rw-r--r-- | drivers/video/tgafb.c | 1552 |
1 files changed, 0 insertions, 1552 deletions
diff --git a/drivers/video/tgafb.c b/drivers/video/tgafb.c deleted file mode 100644 index 94fde625a6c..00000000000 --- a/drivers/video/tgafb.c +++ /dev/null @@ -1,1552 +0,0 @@ -/* - * 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/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> - -/* - * 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 *); -static void tgafb_pci_unregister(struct pci_dev *); - -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, -}; - - -/* - * 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; -} - -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); -} - -#ifdef MODULE -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"); |