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Diffstat (limited to '')
| -rw-r--r-- | drivers/video/fbdev/tgafb.c | 1627 |
1 files changed, 1627 insertions, 0 deletions
diff --git a/drivers/video/fbdev/tgafb.c b/drivers/video/fbdev/tgafb.c new file mode 100644 index 0000000000..fc2d08dd1b --- /dev/null +++ b/drivers/video/fbdev/tgafb.c @@ -0,0 +1,1627 @@ +/* + * 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/aperture.h> +#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 const 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) +{ + int ret; + + ret = aperture_remove_conflicting_pci_devices(pdev, "tgafb"); + if (ret) + return ret; + + 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 (!var->pixclock) + return -EINVAL; + + 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: 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 *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; + + 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; + } + + strscpy(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) + 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(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_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; +#endif + + if (fb_modesetting_disabled("tgafb")) + return -ENODEV; + +#ifndef MODULE + 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"); |