diff options
Diffstat (limited to 'drivers/video/fbdev/pm3fb.c')
| -rw-r--r-- | drivers/video/fbdev/pm3fb.c | 1568 |
1 files changed, 1568 insertions, 0 deletions
diff --git a/drivers/video/fbdev/pm3fb.c b/drivers/video/fbdev/pm3fb.c new file mode 100644 index 000000000..a8faf46ad --- /dev/null +++ b/drivers/video/fbdev/pm3fb.c @@ -0,0 +1,1568 @@ +/* + * linux/drivers/video/pm3fb.c -- 3DLabs Permedia3 frame buffer device + * + * Copyright (C) 2001 Romain Dolbeau <romain@dolbeau.org>. + * + * Ported to 2.6 kernel on 1 May 2007 by Krzysztof Helt <krzysztof.h1@wp.pl> + * based on pm2fb.c + * + * Based on code written by: + * Sven Luther, <luther@dpt-info.u-strasbg.fr> + * Alan Hourihane, <alanh@fairlite.demon.co.uk> + * Russell King, <rmk@arm.linux.org.uk> + * Based on linux/drivers/video/skeletonfb.c: + * Copyright (C) 1997 Geert Uytterhoeven + * Based on linux/driver/video/pm2fb.c: + * Copyright (C) 1998-1999 Ilario Nardinocchi (nardinoc@CS.UniBO.IT) + * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com) + * + * 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/errno.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/fb.h> +#include <linux/init.h> +#include <linux/pci.h> + +#include <video/pm3fb.h> + +#if !defined(CONFIG_PCI) +#error "Only generic PCI cards supported." +#endif + +#undef PM3FB_MASTER_DEBUG +#ifdef PM3FB_MASTER_DEBUG +#define DPRINTK(a, b...) \ + printk(KERN_DEBUG "pm3fb: %s: " a, __func__ , ## b) +#else +#define DPRINTK(a, b...) no_printk(a, ##b) +#endif + +#define PM3_PIXMAP_SIZE (2048 * 4) + +/* + * Driver data + */ +static int hwcursor = 1; +static char *mode_option; +static bool noaccel; +static bool nomtrr; + +/* + * This structure defines the hardware state of the graphics card. Normally + * you place this in a header file in linux/include/video. This file usually + * also includes register information. That allows other driver subsystems + * and userland applications the ability to use the same header file to + * avoid duplicate work and easy porting of software. + */ +struct pm3_par { + unsigned char __iomem *v_regs;/* virtual address of p_regs */ + u32 video; /* video flags before blanking */ + u32 base; /* screen base in 128 bits unit */ + u32 palette[16]; + int wc_cookie; +}; + +/* + * Here we define the default structs fb_fix_screeninfo and fb_var_screeninfo + * if we don't use modedb. If we do use modedb see pm3fb_init how to use it + * to get a fb_var_screeninfo. Otherwise define a default var as well. + */ +static struct fb_fix_screeninfo pm3fb_fix = { + .id = "Permedia3", + .type = FB_TYPE_PACKED_PIXELS, + .visual = FB_VISUAL_PSEUDOCOLOR, + .xpanstep = 1, + .ypanstep = 1, + .ywrapstep = 0, + .accel = FB_ACCEL_3DLABS_PERMEDIA3, +}; + +/* + * Utility functions + */ + +static inline u32 PM3_READ_REG(struct pm3_par *par, s32 off) +{ + return fb_readl(par->v_regs + off); +} + +static inline void PM3_WRITE_REG(struct pm3_par *par, s32 off, u32 v) +{ + fb_writel(v, par->v_regs + off); +} + +static inline void PM3_WAIT(struct pm3_par *par, u32 n) +{ + while (PM3_READ_REG(par, PM3InFIFOSpace) < n) + cpu_relax(); +} + +static inline void PM3_WRITE_DAC_REG(struct pm3_par *par, unsigned r, u8 v) +{ + PM3_WAIT(par, 3); + PM3_WRITE_REG(par, PM3RD_IndexHigh, (r >> 8) & 0xff); + PM3_WRITE_REG(par, PM3RD_IndexLow, r & 0xff); + wmb(); + PM3_WRITE_REG(par, PM3RD_IndexedData, v); + wmb(); +} + +static inline void pm3fb_set_color(struct pm3_par *par, unsigned char regno, + unsigned char r, unsigned char g, unsigned char b) +{ + PM3_WAIT(par, 4); + PM3_WRITE_REG(par, PM3RD_PaletteWriteAddress, regno); + wmb(); + PM3_WRITE_REG(par, PM3RD_PaletteData, r); + wmb(); + PM3_WRITE_REG(par, PM3RD_PaletteData, g); + wmb(); + PM3_WRITE_REG(par, PM3RD_PaletteData, b); + wmb(); +} + +static void pm3fb_clear_colormap(struct pm3_par *par, + unsigned char r, unsigned char g, unsigned char b) +{ + int i; + + for (i = 0; i < 256 ; i++) + pm3fb_set_color(par, i, r, g, b); + +} + +/* Calculating various clock parameters */ +static void pm3fb_calculate_clock(unsigned long reqclock, + unsigned char *prescale, + unsigned char *feedback, + unsigned char *postscale) +{ + int f, pre, post; + unsigned long freq; + long freqerr = 1000; + long currerr; + + for (f = 1; f < 256; f++) { + for (pre = 1; pre < 256; pre++) { + for (post = 0; post < 5; post++) { + freq = ((2*PM3_REF_CLOCK * f) >> post) / pre; + currerr = (reqclock > freq) + ? reqclock - freq + : freq - reqclock; + if (currerr < freqerr) { + freqerr = currerr; + *feedback = f; + *prescale = pre; + *postscale = post; + } + } + } + } +} + +static inline int pm3fb_depth(const struct fb_var_screeninfo *var) +{ + if (var->bits_per_pixel == 16) + return var->red.length + var->green.length + + var->blue.length; + + return var->bits_per_pixel; +} + +static inline int pm3fb_shift_bpp(unsigned bpp, int v) +{ + switch (bpp) { + case 8: + return (v >> 4); + case 16: + return (v >> 3); + case 32: + return (v >> 2); + } + DPRINTK("Unsupported depth %u\n", bpp); + return 0; +} + +/* acceleration */ +static int pm3fb_sync(struct fb_info *info) +{ + struct pm3_par *par = info->par; + + PM3_WAIT(par, 2); + PM3_WRITE_REG(par, PM3FilterMode, PM3FilterModeSync); + PM3_WRITE_REG(par, PM3Sync, 0); + mb(); + do { + while ((PM3_READ_REG(par, PM3OutFIFOWords)) == 0) + cpu_relax(); + } while ((PM3_READ_REG(par, PM3OutputFifo)) != PM3Sync_Tag); + + return 0; +} + +static void pm3fb_init_engine(struct fb_info *info) +{ + struct pm3_par *par = info->par; + const u32 width = (info->var.xres_virtual + 7) & ~7; + + PM3_WAIT(par, 50); + PM3_WRITE_REG(par, PM3FilterMode, PM3FilterModeSync); + PM3_WRITE_REG(par, PM3StatisticMode, 0x0); + PM3_WRITE_REG(par, PM3DeltaMode, 0x0); + PM3_WRITE_REG(par, PM3RasterizerMode, 0x0); + PM3_WRITE_REG(par, PM3ScissorMode, 0x0); + PM3_WRITE_REG(par, PM3LineStippleMode, 0x0); + PM3_WRITE_REG(par, PM3AreaStippleMode, 0x0); + PM3_WRITE_REG(par, PM3GIDMode, 0x0); + PM3_WRITE_REG(par, PM3DepthMode, 0x0); + PM3_WRITE_REG(par, PM3StencilMode, 0x0); + PM3_WRITE_REG(par, PM3StencilData, 0x0); + PM3_WRITE_REG(par, PM3ColorDDAMode, 0x0); + PM3_WRITE_REG(par, PM3TextureCoordMode, 0x0); + PM3_WRITE_REG(par, PM3TextureIndexMode0, 0x0); + PM3_WRITE_REG(par, PM3TextureIndexMode1, 0x0); + PM3_WRITE_REG(par, PM3TextureReadMode, 0x0); + PM3_WRITE_REG(par, PM3LUTMode, 0x0); + PM3_WRITE_REG(par, PM3TextureFilterMode, 0x0); + PM3_WRITE_REG(par, PM3TextureCompositeMode, 0x0); + PM3_WRITE_REG(par, PM3TextureApplicationMode, 0x0); + PM3_WRITE_REG(par, PM3TextureCompositeColorMode1, 0x0); + PM3_WRITE_REG(par, PM3TextureCompositeAlphaMode1, 0x0); + PM3_WRITE_REG(par, PM3TextureCompositeColorMode0, 0x0); + PM3_WRITE_REG(par, PM3TextureCompositeAlphaMode0, 0x0); + PM3_WRITE_REG(par, PM3FogMode, 0x0); + PM3_WRITE_REG(par, PM3ChromaTestMode, 0x0); + PM3_WRITE_REG(par, PM3AlphaTestMode, 0x0); + PM3_WRITE_REG(par, PM3AntialiasMode, 0x0); + PM3_WRITE_REG(par, PM3YUVMode, 0x0); + PM3_WRITE_REG(par, PM3AlphaBlendColorMode, 0x0); + PM3_WRITE_REG(par, PM3AlphaBlendAlphaMode, 0x0); + PM3_WRITE_REG(par, PM3DitherMode, 0x0); + PM3_WRITE_REG(par, PM3LogicalOpMode, 0x0); + PM3_WRITE_REG(par, PM3RouterMode, 0x0); + PM3_WRITE_REG(par, PM3Window, 0x0); + + PM3_WRITE_REG(par, PM3Config2D, 0x0); + + PM3_WRITE_REG(par, PM3SpanColorMask, 0xffffffff); + + PM3_WRITE_REG(par, PM3XBias, 0x0); + PM3_WRITE_REG(par, PM3YBias, 0x0); + PM3_WRITE_REG(par, PM3DeltaControl, 0x0); + + PM3_WRITE_REG(par, PM3BitMaskPattern, 0xffffffff); + + PM3_WRITE_REG(par, PM3FBDestReadEnables, + PM3FBDestReadEnables_E(0xff) | + PM3FBDestReadEnables_R(0xff) | + PM3FBDestReadEnables_ReferenceAlpha(0xff)); + PM3_WRITE_REG(par, PM3FBDestReadBufferAddr0, 0x0); + PM3_WRITE_REG(par, PM3FBDestReadBufferOffset0, 0x0); + PM3_WRITE_REG(par, PM3FBDestReadBufferWidth0, + PM3FBDestReadBufferWidth_Width(width)); + + PM3_WRITE_REG(par, PM3FBDestReadMode, + PM3FBDestReadMode_ReadEnable | + PM3FBDestReadMode_Enable0); + PM3_WRITE_REG(par, PM3FBSourceReadBufferAddr, 0x0); + PM3_WRITE_REG(par, PM3FBSourceReadBufferOffset, 0x0); + PM3_WRITE_REG(par, PM3FBSourceReadBufferWidth, + PM3FBSourceReadBufferWidth_Width(width)); + PM3_WRITE_REG(par, PM3FBSourceReadMode, + PM3FBSourceReadMode_Blocking | + PM3FBSourceReadMode_ReadEnable); + + PM3_WAIT(par, 2); + { + /* invert bits in bitmask */ + unsigned long rm = 1 | (3 << 7); + switch (info->var.bits_per_pixel) { + case 8: + PM3_WRITE_REG(par, PM3PixelSize, + PM3PixelSize_GLOBAL_8BIT); +#ifdef __BIG_ENDIAN + rm |= 3 << 15; +#endif + break; + case 16: + PM3_WRITE_REG(par, PM3PixelSize, + PM3PixelSize_GLOBAL_16BIT); +#ifdef __BIG_ENDIAN + rm |= 2 << 15; +#endif + break; + case 32: + PM3_WRITE_REG(par, PM3PixelSize, + PM3PixelSize_GLOBAL_32BIT); + break; + default: + DPRINTK("Unsupported depth %d\n", + info->var.bits_per_pixel); + break; + } + PM3_WRITE_REG(par, PM3RasterizerMode, rm); + } + + PM3_WAIT(par, 20); + PM3_WRITE_REG(par, PM3FBSoftwareWriteMask, 0xffffffff); + PM3_WRITE_REG(par, PM3FBHardwareWriteMask, 0xffffffff); + PM3_WRITE_REG(par, PM3FBWriteMode, + PM3FBWriteMode_WriteEnable | + PM3FBWriteMode_OpaqueSpan | + PM3FBWriteMode_Enable0); + PM3_WRITE_REG(par, PM3FBWriteBufferAddr0, 0x0); + PM3_WRITE_REG(par, PM3FBWriteBufferOffset0, 0x0); + PM3_WRITE_REG(par, PM3FBWriteBufferWidth0, + PM3FBWriteBufferWidth_Width(width)); + + PM3_WRITE_REG(par, PM3SizeOfFramebuffer, 0x0); + { + /* size in lines of FB */ + unsigned long sofb = info->screen_size / + info->fix.line_length; + if (sofb > 4095) + PM3_WRITE_REG(par, PM3SizeOfFramebuffer, 4095); + else + PM3_WRITE_REG(par, PM3SizeOfFramebuffer, sofb); + + switch (info->var.bits_per_pixel) { + case 8: + PM3_WRITE_REG(par, PM3DitherMode, + (1 << 10) | (2 << 3)); + break; + case 16: + PM3_WRITE_REG(par, PM3DitherMode, + (1 << 10) | (1 << 3)); + break; + case 32: + PM3_WRITE_REG(par, PM3DitherMode, + (1 << 10) | (0 << 3)); + break; + default: + DPRINTK("Unsupported depth %d\n", + info->var.bits_per_pixel); + break; + } + } + + PM3_WRITE_REG(par, PM3dXDom, 0x0); + PM3_WRITE_REG(par, PM3dXSub, 0x0); + PM3_WRITE_REG(par, PM3dY, 1 << 16); + PM3_WRITE_REG(par, PM3StartXDom, 0x0); + PM3_WRITE_REG(par, PM3StartXSub, 0x0); + PM3_WRITE_REG(par, PM3StartY, 0x0); + PM3_WRITE_REG(par, PM3Count, 0x0); + +/* Disable LocalBuffer. better safe than sorry */ + PM3_WRITE_REG(par, PM3LBDestReadMode, 0x0); + PM3_WRITE_REG(par, PM3LBDestReadEnables, 0x0); + PM3_WRITE_REG(par, PM3LBSourceReadMode, 0x0); + PM3_WRITE_REG(par, PM3LBWriteMode, 0x0); + + pm3fb_sync(info); +} + +static void pm3fb_fillrect(struct fb_info *info, + const struct fb_fillrect *region) +{ + struct pm3_par *par = info->par; + struct fb_fillrect modded; + int vxres, vyres; + int rop; + u32 color = (info->fix.visual == FB_VISUAL_TRUECOLOR) ? + ((u32 *)info->pseudo_palette)[region->color] : region->color; + + if (info->state != FBINFO_STATE_RUNNING) + return; + if (info->flags & FBINFO_HWACCEL_DISABLED) { + cfb_fillrect(info, region); + return; + } + if (region->rop == ROP_COPY ) + rop = PM3Config2D_ForegroundROP(0x3); /* GXcopy */ + else + rop = PM3Config2D_ForegroundROP(0x6) | /* GXxor */ + PM3Config2D_FBDestReadEnable; + + vxres = info->var.xres_virtual; + vyres = info->var.yres_virtual; + + memcpy(&modded, region, sizeof(struct fb_fillrect)); + + if (!modded.width || !modded.height || + modded.dx >= vxres || modded.dy >= vyres) + return; + + if (modded.dx + modded.width > vxres) + modded.width = vxres - modded.dx; + if (modded.dy + modded.height > vyres) + modded.height = vyres - modded.dy; + + if (info->var.bits_per_pixel == 8) + color |= color << 8; + if (info->var.bits_per_pixel <= 16) + color |= color << 16; + + PM3_WAIT(par, 4); + /* ROP Ox3 is GXcopy */ + PM3_WRITE_REG(par, PM3Config2D, + PM3Config2D_UseConstantSource | + PM3Config2D_ForegroundROPEnable | + rop | + PM3Config2D_FBWriteEnable); + + PM3_WRITE_REG(par, PM3ForegroundColor, color); + + PM3_WRITE_REG(par, PM3RectanglePosition, + PM3RectanglePosition_XOffset(modded.dx) | + PM3RectanglePosition_YOffset(modded.dy)); + + PM3_WRITE_REG(par, PM3Render2D, + PM3Render2D_XPositive | + PM3Render2D_YPositive | + PM3Render2D_Operation_Normal | + PM3Render2D_SpanOperation | + PM3Render2D_Width(modded.width) | + PM3Render2D_Height(modded.height)); +} + +static void pm3fb_copyarea(struct fb_info *info, + const struct fb_copyarea *area) +{ + struct pm3_par *par = info->par; + struct fb_copyarea modded; + u32 vxres, vyres; + int x_align, o_x, o_y; + + if (info->state != FBINFO_STATE_RUNNING) + return; + if (info->flags & FBINFO_HWACCEL_DISABLED) { + cfb_copyarea(info, area); + return; + } + + memcpy(&modded, area, sizeof(struct fb_copyarea)); + + vxres = info->var.xres_virtual; + vyres = info->var.yres_virtual; + + if (!modded.width || !modded.height || + modded.sx >= vxres || modded.sy >= vyres || + modded.dx >= vxres || modded.dy >= vyres) + return; + + if (modded.sx + modded.width > vxres) + modded.width = vxres - modded.sx; + if (modded.dx + modded.width > vxres) + modded.width = vxres - modded.dx; + if (modded.sy + modded.height > vyres) + modded.height = vyres - modded.sy; + if (modded.dy + modded.height > vyres) + modded.height = vyres - modded.dy; + + o_x = modded.sx - modded.dx; /*(sx > dx ) ? (sx - dx) : (dx - sx); */ + o_y = modded.sy - modded.dy; /*(sy > dy ) ? (sy - dy) : (dy - sy); */ + + x_align = (modded.sx & 0x1f); + + PM3_WAIT(par, 6); + + PM3_WRITE_REG(par, PM3Config2D, + PM3Config2D_UserScissorEnable | + PM3Config2D_ForegroundROPEnable | + PM3Config2D_Blocking | + PM3Config2D_ForegroundROP(0x3) | /* Ox3 is GXcopy */ + PM3Config2D_FBWriteEnable); + + PM3_WRITE_REG(par, PM3ScissorMinXY, + ((modded.dy & 0x0fff) << 16) | (modded.dx & 0x0fff)); + PM3_WRITE_REG(par, PM3ScissorMaxXY, + (((modded.dy + modded.height) & 0x0fff) << 16) | + ((modded.dx + modded.width) & 0x0fff)); + + PM3_WRITE_REG(par, PM3FBSourceReadBufferOffset, + PM3FBSourceReadBufferOffset_XOffset(o_x) | + PM3FBSourceReadBufferOffset_YOffset(o_y)); + + PM3_WRITE_REG(par, PM3RectanglePosition, + PM3RectanglePosition_XOffset(modded.dx - x_align) | + PM3RectanglePosition_YOffset(modded.dy)); + + PM3_WRITE_REG(par, PM3Render2D, + ((modded.sx > modded.dx) ? PM3Render2D_XPositive : 0) | + ((modded.sy > modded.dy) ? PM3Render2D_YPositive : 0) | + PM3Render2D_Operation_Normal | + PM3Render2D_SpanOperation | + PM3Render2D_FBSourceReadEnable | + PM3Render2D_Width(modded.width + x_align) | + PM3Render2D_Height(modded.height)); +} + +static void pm3fb_imageblit(struct fb_info *info, const struct fb_image *image) +{ + struct pm3_par *par = info->par; + u32 height = image->height; + u32 fgx, bgx; + const u32 *src = (const u32 *)image->data; + + if (info->state != FBINFO_STATE_RUNNING) + return; + if (info->flags & FBINFO_HWACCEL_DISABLED) { + cfb_imageblit(info, image); + return; + } + switch (info->fix.visual) { + case FB_VISUAL_PSEUDOCOLOR: + fgx = image->fg_color; + bgx = image->bg_color; + break; + case FB_VISUAL_TRUECOLOR: + default: + fgx = par->palette[image->fg_color]; + bgx = par->palette[image->bg_color]; + break; + } + if (image->depth != 1) { + cfb_imageblit(info, image); + return; + } + + if (info->var.bits_per_pixel == 8) { + fgx |= fgx << 8; + bgx |= bgx << 8; + } + if (info->var.bits_per_pixel <= 16) { + fgx |= fgx << 16; + bgx |= bgx << 16; + } + + PM3_WAIT(par, 7); + + PM3_WRITE_REG(par, PM3ForegroundColor, fgx); + PM3_WRITE_REG(par, PM3BackgroundColor, bgx); + + /* ROP Ox3 is GXcopy */ + PM3_WRITE_REG(par, PM3Config2D, + PM3Config2D_UserScissorEnable | + PM3Config2D_UseConstantSource | + PM3Config2D_ForegroundROPEnable | + PM3Config2D_ForegroundROP(0x3) | + PM3Config2D_OpaqueSpan | + PM3Config2D_FBWriteEnable); + PM3_WRITE_REG(par, PM3ScissorMinXY, + ((image->dy & 0x0fff) << 16) | (image->dx & 0x0fff)); + PM3_WRITE_REG(par, PM3ScissorMaxXY, + (((image->dy + image->height) & 0x0fff) << 16) | + ((image->dx + image->width) & 0x0fff)); + PM3_WRITE_REG(par, PM3RectanglePosition, + PM3RectanglePosition_XOffset(image->dx) | + PM3RectanglePosition_YOffset(image->dy)); + PM3_WRITE_REG(par, PM3Render2D, + PM3Render2D_XPositive | + PM3Render2D_YPositive | + PM3Render2D_Operation_SyncOnBitMask | + PM3Render2D_SpanOperation | + PM3Render2D_Width(image->width) | + PM3Render2D_Height(image->height)); + + + while (height--) { + int width = ((image->width + 7) >> 3) + + info->pixmap.scan_align - 1; + width >>= 2; + + while (width >= PM3_FIFO_SIZE) { + int i = PM3_FIFO_SIZE - 1; + + PM3_WAIT(par, PM3_FIFO_SIZE); + while (i--) { + PM3_WRITE_REG(par, PM3BitMaskPattern, *src); + src++; + } + width -= PM3_FIFO_SIZE - 1; + } + + PM3_WAIT(par, width + 1); + while (width--) { + PM3_WRITE_REG(par, PM3BitMaskPattern, *src); + src++; + } + } +} +/* end of acceleration functions */ + +/* + * Hardware Cursor support. + */ +static const u8 cursor_bits_lookup[16] = { + 0x00, 0x40, 0x10, 0x50, 0x04, 0x44, 0x14, 0x54, + 0x01, 0x41, 0x11, 0x51, 0x05, 0x45, 0x15, 0x55 +}; + +static int pm3fb_cursor(struct fb_info *info, struct fb_cursor *cursor) +{ + struct pm3_par *par = info->par; + u8 mode; + + if (!hwcursor) + return -EINVAL; /* just to force soft_cursor() call */ + + /* Too large of a cursor or wrong bpp :-( */ + if (cursor->image.width > 64 || + cursor->image.height > 64 || + cursor->image.depth > 1) + return -EINVAL; + + mode = PM3RD_CursorMode_TYPE_X; + if (cursor->enable) + mode |= PM3RD_CursorMode_CURSOR_ENABLE; + + PM3_WRITE_DAC_REG(par, PM3RD_CursorMode, mode); + + /* + * If the cursor is not be changed this means either we want the + * current cursor state (if enable is set) or we want to query what + * we can do with the cursor (if enable is not set) + */ + if (!cursor->set) + return 0; + + if (cursor->set & FB_CUR_SETPOS) { + int x = cursor->image.dx - info->var.xoffset; + int y = cursor->image.dy - info->var.yoffset; + + PM3_WRITE_DAC_REG(par, PM3RD_CursorXLow, x & 0xff); + PM3_WRITE_DAC_REG(par, PM3RD_CursorXHigh, (x >> 8) & 0xf); + PM3_WRITE_DAC_REG(par, PM3RD_CursorYLow, y & 0xff); + PM3_WRITE_DAC_REG(par, PM3RD_CursorYHigh, (y >> 8) & 0xf); + } + + if (cursor->set & FB_CUR_SETHOT) { + PM3_WRITE_DAC_REG(par, PM3RD_CursorHotSpotX, + cursor->hot.x & 0x3f); + PM3_WRITE_DAC_REG(par, PM3RD_CursorHotSpotY, + cursor->hot.y & 0x3f); + } + + if (cursor->set & FB_CUR_SETCMAP) { + u32 fg_idx = cursor->image.fg_color; + u32 bg_idx = cursor->image.bg_color; + struct fb_cmap cmap = info->cmap; + + /* the X11 driver says one should use these color registers */ + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(39), + cmap.red[fg_idx] >> 8 ); + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(40), + cmap.green[fg_idx] >> 8 ); + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(41), + cmap.blue[fg_idx] >> 8 ); + + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(42), + cmap.red[bg_idx] >> 8 ); + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(43), + cmap.green[bg_idx] >> 8 ); + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(44), + cmap.blue[bg_idx] >> 8 ); + } + + if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) { + u8 *bitmap = (u8 *)cursor->image.data; + u8 *mask = (u8 *)cursor->mask; + int i; + int pos = PM3RD_CursorPattern(0); + + for (i = 0; i < cursor->image.height; i++) { + int j = (cursor->image.width + 7) >> 3; + int k = 8 - j; + + for (; j > 0; j--) { + u8 data = *bitmap ^ *mask; + + if (cursor->rop == ROP_COPY) + data = *mask & *bitmap; + /* Upper 4 bits of bitmap data */ + PM3_WRITE_DAC_REG(par, pos++, + cursor_bits_lookup[data >> 4] | + (cursor_bits_lookup[*mask >> 4] << 1)); + /* Lower 4 bits of bitmap */ + PM3_WRITE_DAC_REG(par, pos++, + cursor_bits_lookup[data & 0xf] | + (cursor_bits_lookup[*mask & 0xf] << 1)); + bitmap++; + mask++; + } + for (; k > 0; k--) { + PM3_WRITE_DAC_REG(par, pos++, 0); + PM3_WRITE_DAC_REG(par, pos++, 0); + } + } + while (pos < PM3RD_CursorPattern(1024)) + PM3_WRITE_DAC_REG(par, pos++, 0); + } + return 0; +} + +/* write the mode to registers */ +static void pm3fb_write_mode(struct fb_info *info) +{ + struct pm3_par *par = info->par; + char tempsync = 0x00; + char tempmisc = 0x00; + const u32 hsstart = info->var.right_margin; + const u32 hsend = hsstart + info->var.hsync_len; + const u32 hbend = hsend + info->var.left_margin; + const u32 xres = (info->var.xres + 31) & ~31; + const u32 htotal = xres + hbend; + const u32 vsstart = info->var.lower_margin; + const u32 vsend = vsstart + info->var.vsync_len; + const u32 vbend = vsend + info->var.upper_margin; + const u32 vtotal = info->var.yres + vbend; + const u32 width = (info->var.xres_virtual + 7) & ~7; + const unsigned bpp = info->var.bits_per_pixel; + + PM3_WAIT(par, 20); + PM3_WRITE_REG(par, PM3MemBypassWriteMask, 0xffffffff); + PM3_WRITE_REG(par, PM3Aperture0, 0x00000000); + PM3_WRITE_REG(par, PM3Aperture1, 0x00000000); + PM3_WRITE_REG(par, PM3FIFODis, 0x00000007); + + PM3_WRITE_REG(par, PM3HTotal, + pm3fb_shift_bpp(bpp, htotal - 1)); + PM3_WRITE_REG(par, PM3HsEnd, + pm3fb_shift_bpp(bpp, hsend)); + PM3_WRITE_REG(par, PM3HsStart, + pm3fb_shift_bpp(bpp, hsstart)); + PM3_WRITE_REG(par, PM3HbEnd, + pm3fb_shift_bpp(bpp, hbend)); + PM3_WRITE_REG(par, PM3HgEnd, + pm3fb_shift_bpp(bpp, hbend)); + PM3_WRITE_REG(par, PM3ScreenStride, + pm3fb_shift_bpp(bpp, width)); + PM3_WRITE_REG(par, PM3VTotal, vtotal - 1); + PM3_WRITE_REG(par, PM3VsEnd, vsend - 1); + PM3_WRITE_REG(par, PM3VsStart, vsstart - 1); + PM3_WRITE_REG(par, PM3VbEnd, vbend); + + switch (bpp) { + case 8: + PM3_WRITE_REG(par, PM3ByAperture1Mode, + PM3ByApertureMode_PIXELSIZE_8BIT); + PM3_WRITE_REG(par, PM3ByAperture2Mode, + PM3ByApertureMode_PIXELSIZE_8BIT); + break; + + case 16: +#ifndef __BIG_ENDIAN + PM3_WRITE_REG(par, PM3ByAperture1Mode, + PM3ByApertureMode_PIXELSIZE_16BIT); + PM3_WRITE_REG(par, PM3ByAperture2Mode, + PM3ByApertureMode_PIXELSIZE_16BIT); +#else + PM3_WRITE_REG(par, PM3ByAperture1Mode, + PM3ByApertureMode_PIXELSIZE_16BIT | + PM3ByApertureMode_BYTESWAP_BADC); + PM3_WRITE_REG(par, PM3ByAperture2Mode, + PM3ByApertureMode_PIXELSIZE_16BIT | + PM3ByApertureMode_BYTESWAP_BADC); +#endif /* ! __BIG_ENDIAN */ + break; + + case 32: +#ifndef __BIG_ENDIAN + PM3_WRITE_REG(par, PM3ByAperture1Mode, + PM3ByApertureMode_PIXELSIZE_32BIT); + PM3_WRITE_REG(par, PM3ByAperture2Mode, + PM3ByApertureMode_PIXELSIZE_32BIT); +#else + PM3_WRITE_REG(par, PM3ByAperture1Mode, + PM3ByApertureMode_PIXELSIZE_32BIT | + PM3ByApertureMode_BYTESWAP_DCBA); + PM3_WRITE_REG(par, PM3ByAperture2Mode, + PM3ByApertureMode_PIXELSIZE_32BIT | + PM3ByApertureMode_BYTESWAP_DCBA); +#endif /* ! __BIG_ENDIAN */ + break; + + default: + DPRINTK("Unsupported depth %d\n", bpp); + break; + } + + /* + * Oxygen VX1 - it appears that setting PM3VideoControl and + * then PM3RD_SyncControl to the same SYNC settings undoes + * any net change - they seem to xor together. Only set the + * sync options in PM3RD_SyncControl. --rmk + */ + { + unsigned int video = par->video; + + video &= ~(PM3VideoControl_HSYNC_MASK | + PM3VideoControl_VSYNC_MASK); + video |= PM3VideoControl_HSYNC_ACTIVE_HIGH | + PM3VideoControl_VSYNC_ACTIVE_HIGH; + PM3_WRITE_REG(par, PM3VideoControl, video); + } + PM3_WRITE_REG(par, PM3VClkCtl, + (PM3_READ_REG(par, PM3VClkCtl) & 0xFFFFFFFC)); + PM3_WRITE_REG(par, PM3ScreenBase, par->base); + PM3_WRITE_REG(par, PM3ChipConfig, + (PM3_READ_REG(par, PM3ChipConfig) & 0xFFFFFFFD)); + + wmb(); + { + unsigned char m; /* ClkPreScale */ + unsigned char n; /* ClkFeedBackScale */ + unsigned char p; /* ClkPostScale */ + unsigned long pixclock = PICOS2KHZ(info->var.pixclock); + + (void)pm3fb_calculate_clock(pixclock, &m, &n, &p); + + DPRINTK("Pixclock: %ld, Pre: %d, Feedback: %d, Post: %d\n", + pixclock, (int) m, (int) n, (int) p); + + PM3_WRITE_DAC_REG(par, PM3RD_DClk0PreScale, m); + PM3_WRITE_DAC_REG(par, PM3RD_DClk0FeedbackScale, n); + PM3_WRITE_DAC_REG(par, PM3RD_DClk0PostScale, p); + } + /* + PM3_WRITE_DAC_REG(par, PM3RD_IndexControl, 0x00); + */ + /* + PM3_SLOW_WRITE_REG(par, PM3RD_IndexControl, 0x00); + */ + if ((par->video & PM3VideoControl_HSYNC_MASK) == + PM3VideoControl_HSYNC_ACTIVE_HIGH) + tempsync |= PM3RD_SyncControl_HSYNC_ACTIVE_HIGH; + if ((par->video & PM3VideoControl_VSYNC_MASK) == + PM3VideoControl_VSYNC_ACTIVE_HIGH) + tempsync |= PM3RD_SyncControl_VSYNC_ACTIVE_HIGH; + + PM3_WRITE_DAC_REG(par, PM3RD_SyncControl, tempsync); + DPRINTK("PM3RD_SyncControl: %d\n", tempsync); + + PM3_WRITE_DAC_REG(par, PM3RD_DACControl, 0x00); + + switch (pm3fb_depth(&info->var)) { + case 8: + PM3_WRITE_DAC_REG(par, PM3RD_PixelSize, + PM3RD_PixelSize_8_BIT_PIXELS); + PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat, + PM3RD_ColorFormat_CI8_COLOR | + PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW); + tempmisc |= PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE; + break; + case 12: + PM3_WRITE_DAC_REG(par, PM3RD_PixelSize, + PM3RD_PixelSize_16_BIT_PIXELS); + PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat, + PM3RD_ColorFormat_4444_COLOR | + PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW | + PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE); + tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE | + PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE; + break; + case 15: + PM3_WRITE_DAC_REG(par, PM3RD_PixelSize, + PM3RD_PixelSize_16_BIT_PIXELS); + PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat, + PM3RD_ColorFormat_5551_FRONT_COLOR | + PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW | + PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE); + tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE | + PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE; + break; + case 16: + PM3_WRITE_DAC_REG(par, PM3RD_PixelSize, + PM3RD_PixelSize_16_BIT_PIXELS); + PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat, + PM3RD_ColorFormat_565_FRONT_COLOR | + PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW | + PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE); + tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE | + PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE; + break; + case 32: + PM3_WRITE_DAC_REG(par, PM3RD_PixelSize, + PM3RD_PixelSize_32_BIT_PIXELS); + PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat, + PM3RD_ColorFormat_8888_COLOR | + PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW); + tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE | + PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE; + break; + } + PM3_WRITE_DAC_REG(par, PM3RD_MiscControl, tempmisc); +} + +/* + * hardware independent functions + */ +static int pm3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) +{ + u32 lpitch; + unsigned bpp = var->red.length + var->green.length + + var->blue.length + var->transp.length; + + if (bpp != var->bits_per_pixel) { + /* set predefined mode for bits_per_pixel settings */ + + switch (var->bits_per_pixel) { + case 8: + var->red.length = 8; + var->green.length = 8; + var->blue.length = 8; + var->red.offset = 0; + var->green.offset = 0; + var->blue.offset = 0; + var->transp.offset = 0; + var->transp.length = 0; + break; + case 16: + var->red.length = 5; + var->blue.length = 5; + var->green.length = 6; + var->transp.length = 0; + break; + case 32: + var->red.length = 8; + var->green.length = 8; + var->blue.length = 8; + var->transp.length = 8; + break; + default: + DPRINTK("depth not supported: %u\n", + var->bits_per_pixel); + return -EINVAL; + } + } + /* it is assumed BGRA order */ + if (var->bits_per_pixel > 8 ) { + var->blue.offset = 0; + var->green.offset = var->blue.length; + var->red.offset = var->green.offset + var->green.length; + var->transp.offset = var->red.offset + var->red.length; + } + var->height = -1; + var->width = -1; + + if (var->xres != var->xres_virtual) { + DPRINTK("virtual x resolution != " + "physical x resolution not supported\n"); + return -EINVAL; + } + + if (var->yres > var->yres_virtual) { + DPRINTK("virtual y resolution < " + "physical y resolution not possible\n"); + return -EINVAL; + } + + if (var->xoffset) { + DPRINTK("xoffset not supported\n"); + return -EINVAL; + } + + if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) { + DPRINTK("interlace not supported\n"); + return -EINVAL; + } + + var->xres = (var->xres + 31) & ~31; /* could sometimes be 8 */ + lpitch = var->xres * ((var->bits_per_pixel + 7) >> 3); + + if (var->xres < 200 || var->xres > 2048) { + DPRINTK("width not supported: %u\n", var->xres); + return -EINVAL; + } + + if (var->yres < 200 || var->yres > 4095) { + DPRINTK("height not supported: %u\n", var->yres); + return -EINVAL; + } + + if (lpitch * var->yres_virtual > info->fix.smem_len) { + DPRINTK("no memory for screen (%ux%ux%u)\n", + var->xres, var->yres_virtual, var->bits_per_pixel); + return -EINVAL; + } + + if (PICOS2KHZ(var->pixclock) > PM3_MAX_PIXCLOCK) { + DPRINTK("pixclock too high (%ldKHz)\n", + PICOS2KHZ(var->pixclock)); + return -EINVAL; + } + + var->accel_flags = 0; /* Can't mmap if this is on */ + + DPRINTK("Checking graphics mode at %dx%d depth %d\n", + var->xres, var->yres, var->bits_per_pixel); + return 0; +} + +static int pm3fb_set_par(struct fb_info *info) +{ + struct pm3_par *par = info->par; + const u32 xres = (info->var.xres + 31) & ~31; + const unsigned bpp = info->var.bits_per_pixel; + + par->base = pm3fb_shift_bpp(bpp, (info->var.yoffset * xres) + + info->var.xoffset); + par->video = 0; + + if (info->var.sync & FB_SYNC_HOR_HIGH_ACT) + par->video |= PM3VideoControl_HSYNC_ACTIVE_HIGH; + else + par->video |= PM3VideoControl_HSYNC_ACTIVE_LOW; + + if (info->var.sync & FB_SYNC_VERT_HIGH_ACT) + par->video |= PM3VideoControl_VSYNC_ACTIVE_HIGH; + else + par->video |= PM3VideoControl_VSYNC_ACTIVE_LOW; + + if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) + par->video |= PM3VideoControl_LINE_DOUBLE_ON; + + if ((info->var.activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) + par->video |= PM3VideoControl_ENABLE; + else + DPRINTK("PM3Video disabled\n"); + + switch (bpp) { + case 8: + par->video |= PM3VideoControl_PIXELSIZE_8BIT; + break; + case 16: + par->video |= PM3VideoControl_PIXELSIZE_16BIT; + break; + case 32: + par->video |= PM3VideoControl_PIXELSIZE_32BIT; + break; + default: + DPRINTK("Unsupported depth\n"); + break; + } + + info->fix.visual = + (bpp == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; + info->fix.line_length = ((info->var.xres_virtual + 7) >> 3) * bpp; + +/* pm3fb_clear_memory(info, 0);*/ + pm3fb_clear_colormap(par, 0, 0, 0); + PM3_WRITE_DAC_REG(par, PM3RD_CursorMode, 0); + pm3fb_init_engine(info); + pm3fb_write_mode(info); + return 0; +} + +static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green, + unsigned blue, unsigned transp, + struct fb_info *info) +{ + struct pm3_par *par = info->par; + + if (regno >= 256) /* no. of hw registers */ + return -EINVAL; + + /* grayscale works only partially under directcolor */ + /* grayscale = 0.30*R + 0.59*G + 0.11*B */ + if (info->var.grayscale) + red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8; + + /* Directcolor: + * var->{color}.offset contains start of bitfield + * var->{color}.length contains length of bitfield + * {hardwarespecific} contains width of DAC + * pseudo_palette[X] is programmed to (X << red.offset) | + * (X << green.offset) | + * (X << blue.offset) + * RAMDAC[X] is programmed to (red, green, blue) + * color depth = SUM(var->{color}.length) + * + * Pseudocolor: + * var->{color}.offset is 0 + * var->{color}.length contains width of DAC or the number + * of unique colors available (color depth) + * pseudo_palette is not used + * RAMDAC[X] is programmed to (red, green, blue) + * color depth = var->{color}.length + */ + + /* + * This is the point where the color is converted to something that + * is acceptable by the hardware. + */ +#define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF - (val)) >> 16) + red = CNVT_TOHW(red, info->var.red.length); + green = CNVT_TOHW(green, info->var.green.length); + blue = CNVT_TOHW(blue, info->var.blue.length); + transp = CNVT_TOHW(transp, info->var.transp.length); +#undef CNVT_TOHW + + if (info->fix.visual == FB_VISUAL_TRUECOLOR || + info->fix.visual == FB_VISUAL_DIRECTCOLOR) { + u32 v; + + if (regno >= 16) + return -EINVAL; + + v = (red << info->var.red.offset) | + (green << info->var.green.offset) | + (blue << info->var.blue.offset) | + (transp << info->var.transp.offset); + + switch (info->var.bits_per_pixel) { + case 8: + break; + case 16: + case 32: + ((u32 *)(info->pseudo_palette))[regno] = v; + break; + } + return 0; + } else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) + pm3fb_set_color(par, regno, red, green, blue); + + return 0; +} + +static int pm3fb_pan_display(struct fb_var_screeninfo *var, + struct fb_info *info) +{ + struct pm3_par *par = info->par; + const u32 xres = (info->var.xres + 31) & ~31; + + par->base = pm3fb_shift_bpp(info->var.bits_per_pixel, + (var->yoffset * xres) + + var->xoffset); + PM3_WAIT(par, 1); + PM3_WRITE_REG(par, PM3ScreenBase, par->base); + return 0; +} + +static int pm3fb_blank(int blank_mode, struct fb_info *info) +{ + struct pm3_par *par = info->par; + u32 video = par->video; + + /* + * Oxygen VX1 - it appears that setting PM3VideoControl and + * then PM3RD_SyncControl to the same SYNC settings undoes + * any net change - they seem to xor together. Only set the + * sync options in PM3RD_SyncControl. --rmk + */ + video &= ~(PM3VideoControl_HSYNC_MASK | + PM3VideoControl_VSYNC_MASK); + video |= PM3VideoControl_HSYNC_ACTIVE_HIGH | + PM3VideoControl_VSYNC_ACTIVE_HIGH; + + switch (blank_mode) { + case FB_BLANK_UNBLANK: + video |= PM3VideoControl_ENABLE; + break; + case FB_BLANK_NORMAL: + video &= ~PM3VideoControl_ENABLE; + break; + case FB_BLANK_HSYNC_SUSPEND: + video &= ~(PM3VideoControl_HSYNC_MASK | + PM3VideoControl_BLANK_ACTIVE_LOW); + break; + case FB_BLANK_VSYNC_SUSPEND: + video &= ~(PM3VideoControl_VSYNC_MASK | + PM3VideoControl_BLANK_ACTIVE_LOW); + break; + case FB_BLANK_POWERDOWN: + video &= ~(PM3VideoControl_HSYNC_MASK | + PM3VideoControl_VSYNC_MASK | + PM3VideoControl_BLANK_ACTIVE_LOW); + break; + default: + DPRINTK("Unsupported blanking %d\n", blank_mode); + return 1; + } + + PM3_WAIT(par, 1); + PM3_WRITE_REG(par, PM3VideoControl, video); + return 0; +} + + /* + * Frame buffer operations + */ + +static const struct fb_ops pm3fb_ops = { + .owner = THIS_MODULE, + .fb_check_var = pm3fb_check_var, + .fb_set_par = pm3fb_set_par, + .fb_setcolreg = pm3fb_setcolreg, + .fb_pan_display = pm3fb_pan_display, + .fb_fillrect = pm3fb_fillrect, + .fb_copyarea = pm3fb_copyarea, + .fb_imageblit = pm3fb_imageblit, + .fb_blank = pm3fb_blank, + .fb_sync = pm3fb_sync, + .fb_cursor = pm3fb_cursor, +}; + +/* ------------------------------------------------------------------------- */ + + /* + * Initialization + */ + +/* mmio register are already mapped when this function is called */ +/* the pm3fb_fix.smem_start is also set */ +static unsigned long pm3fb_size_memory(struct pm3_par *par) +{ + unsigned long memsize = 0; + unsigned long tempBypass, i, temp1, temp2; + unsigned char __iomem *screen_mem; + + pm3fb_fix.smem_len = 64 * 1024l * 1024; /* request full aperture size */ + /* Linear frame buffer - request region and map it. */ + if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len, + "pm3fb smem")) { + printk(KERN_WARNING "pm3fb: Can't reserve smem.\n"); + return 0; + } + screen_mem = + ioremap(pm3fb_fix.smem_start, pm3fb_fix.smem_len); + if (!screen_mem) { + printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n"); + release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len); + return 0; + } + + /* TODO: card-specific stuff, *before* accessing *any* FB memory */ + /* For Appian Jeronimo 2000 board second head */ + + tempBypass = PM3_READ_REG(par, PM3MemBypassWriteMask); + + DPRINTK("PM3MemBypassWriteMask was: 0x%08lx\n", tempBypass); + + PM3_WAIT(par, 1); + PM3_WRITE_REG(par, PM3MemBypassWriteMask, 0xFFFFFFFF); + + /* pm3 split up memory, replicates, and do a lot of + * nasty stuff IMHO ;-) + */ + for (i = 0; i < 32; i++) { + fb_writel(i * 0x00345678, + (screen_mem + (i * 1048576))); + mb(); + temp1 = fb_readl((screen_mem + (i * 1048576))); + + /* Let's check for wrapover, write will fail at 16MB boundary */ + if (temp1 == (i * 0x00345678)) + memsize = i; + else + break; + } + + DPRINTK("First detect pass already got %ld MB\n", memsize + 1); + + if (memsize + 1 == i) { + for (i = 0; i < 32; i++) { + /* Clear first 32MB ; 0 is 0, no need to byteswap */ + writel(0x0000000, (screen_mem + (i * 1048576))); + } + wmb(); + + for (i = 32; i < 64; i++) { + fb_writel(i * 0x00345678, + (screen_mem + (i * 1048576))); + mb(); + temp1 = + fb_readl((screen_mem + (i * 1048576))); + temp2 = + fb_readl((screen_mem + ((i - 32) * 1048576))); + /* different value, different RAM... */ + if ((temp1 == (i * 0x00345678)) && (temp2 == 0)) + memsize = i; + else + break; + } + } + DPRINTK("Second detect pass got %ld MB\n", memsize + 1); + + PM3_WAIT(par, 1); + PM3_WRITE_REG(par, PM3MemBypassWriteMask, tempBypass); + + iounmap(screen_mem); + release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len); + memsize = 1048576 * (memsize + 1); + + DPRINTK("Returning 0x%08lx bytes\n", memsize); + + return memsize; +} + +static int pm3fb_probe(struct pci_dev *dev, const struct pci_device_id *ent) +{ + struct fb_info *info; + struct pm3_par *par; + struct device *device = &dev->dev; /* for pci drivers */ + int err; + int retval = -ENXIO; + + err = pci_enable_device(dev); + if (err) { + printk(KERN_WARNING "pm3fb: Can't enable PCI dev: %d\n", err); + return err; + } + /* + * Dynamically allocate info and par + */ + info = framebuffer_alloc(sizeof(struct pm3_par), device); + + if (!info) + return -ENOMEM; + par = info->par; + + /* + * Here we set the screen_base to the virtual memory address + * for the framebuffer. + */ + pm3fb_fix.mmio_start = pci_resource_start(dev, 0); + pm3fb_fix.mmio_len = PM3_REGS_SIZE; +#if defined(__BIG_ENDIAN) + pm3fb_fix.mmio_start += PM3_REGS_SIZE; + DPRINTK("Adjusting register base for big-endian.\n"); +#endif + + /* Registers - request region and map it. */ + if (!request_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len, + "pm3fb regbase")) { + printk(KERN_WARNING "pm3fb: Can't reserve regbase.\n"); + goto err_exit_neither; + } + par->v_regs = + ioremap(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len); + if (!par->v_regs) { + printk(KERN_WARNING "pm3fb: Can't remap %s register area.\n", + pm3fb_fix.id); + release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len); + goto err_exit_neither; + } + + /* Linear frame buffer - request region and map it. */ + pm3fb_fix.smem_start = pci_resource_start(dev, 1); + pm3fb_fix.smem_len = pm3fb_size_memory(par); + if (!pm3fb_fix.smem_len) { + printk(KERN_WARNING "pm3fb: Can't find memory on board.\n"); + goto err_exit_mmio; + } + if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len, + "pm3fb smem")) { + printk(KERN_WARNING "pm3fb: Can't reserve smem.\n"); + goto err_exit_mmio; + } + info->screen_base = ioremap_wc(pm3fb_fix.smem_start, + pm3fb_fix.smem_len); + if (!info->screen_base) { + printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n"); + release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len); + goto err_exit_mmio; + } + info->screen_size = pm3fb_fix.smem_len; + + if (!nomtrr) + par->wc_cookie = arch_phys_wc_add(pm3fb_fix.smem_start, + pm3fb_fix.smem_len); + info->fbops = &pm3fb_ops; + + par->video = PM3_READ_REG(par, PM3VideoControl); + + info->fix = pm3fb_fix; + info->pseudo_palette = par->palette; + info->flags = FBINFO_DEFAULT | + FBINFO_HWACCEL_XPAN | + FBINFO_HWACCEL_YPAN | + FBINFO_HWACCEL_COPYAREA | + FBINFO_HWACCEL_IMAGEBLIT | + FBINFO_HWACCEL_FILLRECT; + + if (noaccel) { + printk(KERN_DEBUG "disabling acceleration\n"); + info->flags |= FBINFO_HWACCEL_DISABLED; + } + info->pixmap.addr = kmalloc(PM3_PIXMAP_SIZE, GFP_KERNEL); + if (!info->pixmap.addr) { + retval = -ENOMEM; + goto err_exit_pixmap; + } + info->pixmap.size = PM3_PIXMAP_SIZE; + info->pixmap.buf_align = 4; + info->pixmap.scan_align = 4; + info->pixmap.access_align = 32; + info->pixmap.flags = FB_PIXMAP_SYSTEM; + + /* + * This should give a reasonable default video mode. The following is + * done when we can set a video mode. + */ + if (!mode_option) + mode_option = "640x480@60"; + + retval = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8); + + if (!retval || retval == 4) { + retval = -EINVAL; + goto err_exit_both; + } + + if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { + retval = -ENOMEM; + goto err_exit_both; + } + + /* + * For drivers that can... + */ + pm3fb_check_var(&info->var, info); + + if (register_framebuffer(info) < 0) { + retval = -EINVAL; + goto err_exit_all; + } + fb_info(info, "%s frame buffer device\n", info->fix.id); + pci_set_drvdata(dev, info); + return 0; + + err_exit_all: + fb_dealloc_cmap(&info->cmap); + err_exit_both: + kfree(info->pixmap.addr); + err_exit_pixmap: + iounmap(info->screen_base); + release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len); + err_exit_mmio: + iounmap(par->v_regs); + release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len); + err_exit_neither: + framebuffer_release(info); + return retval; +} + + /* + * Cleanup + */ +static void pm3fb_remove(struct pci_dev *dev) +{ + struct fb_info *info = pci_get_drvdata(dev); + + if (info) { + struct fb_fix_screeninfo *fix = &info->fix; + struct pm3_par *par = info->par; + + unregister_framebuffer(info); + fb_dealloc_cmap(&info->cmap); + + arch_phys_wc_del(par->wc_cookie); + iounmap(info->screen_base); + release_mem_region(fix->smem_start, fix->smem_len); + iounmap(par->v_regs); + release_mem_region(fix->mmio_start, fix->mmio_len); + + kfree(info->pixmap.addr); + framebuffer_release(info); + } +} + +static const struct pci_device_id pm3fb_id_table[] = { + { PCI_VENDOR_ID_3DLABS, 0x0a, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, + { 0, } +}; + +/* For PCI drivers */ +static struct pci_driver pm3fb_driver = { + .name = "pm3fb", + .id_table = pm3fb_id_table, + .probe = pm3fb_probe, + .remove = pm3fb_remove, +}; + +MODULE_DEVICE_TABLE(pci, pm3fb_id_table); + +#ifndef MODULE + /* + * Setup + */ + +/* + * Only necessary if your driver takes special options, + * otherwise we fall back on the generic fb_setup(). + */ +static int __init pm3fb_setup(char *options) +{ + char *this_opt; + + /* Parse user specified options (`video=pm3fb:') */ + if (!options || !*options) + return 0; + + while ((this_opt = strsep(&options, ",")) != NULL) { + if (!*this_opt) + continue; + else if (!strncmp(this_opt, "noaccel", 7)) + noaccel = 1; + else if (!strncmp(this_opt, "hwcursor=", 9)) + hwcursor = simple_strtoul(this_opt + 9, NULL, 0); + else if (!strncmp(this_opt, "nomtrr", 6)) + nomtrr = 1; + else + mode_option = this_opt; + } + return 0; +} +#endif /* MODULE */ + +static int __init pm3fb_init(void) +{ + /* + * For kernel boot options (in 'video=pm3fb:<options>' format) + */ +#ifndef MODULE + char *option = NULL; + + if (fb_get_options("pm3fb", &option)) + return -ENODEV; + pm3fb_setup(option); +#endif + + return pci_register_driver(&pm3fb_driver); +} + +#ifdef MODULE +static void __exit pm3fb_exit(void) +{ + pci_unregister_driver(&pm3fb_driver); +} + +module_exit(pm3fb_exit); +#endif +module_init(pm3fb_init); + +module_param(mode_option, charp, 0); +MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'"); +module_param(noaccel, bool, 0); +MODULE_PARM_DESC(noaccel, "Disable acceleration"); +module_param(hwcursor, int, 0644); +MODULE_PARM_DESC(hwcursor, "Enable hardware cursor " + "(1=enable, 0=disable, default=1)"); +module_param(nomtrr, bool, 0); +MODULE_PARM_DESC(nomtrr, "Disable MTRR support (0 or 1=disabled) (default=0)"); + +MODULE_DESCRIPTION("Permedia3 framebuffer device driver"); +MODULE_LICENSE("GPL"); |