diff options
Diffstat (limited to 'drivers/video/sstfb.c')
| -rw-r--r-- | drivers/video/sstfb.c | 1722 |
1 files changed, 1722 insertions, 0 deletions
diff --git a/drivers/video/sstfb.c b/drivers/video/sstfb.c new file mode 100644 index 0000000..663d536 --- /dev/null +++ b/drivers/video/sstfb.c @@ -0,0 +1,1722 @@ +/* + * linux/drivers/video/sstfb.c -- voodoo graphics frame buffer + * + * Copyright (c) 2000-2002 Ghozlane Toumi <gtoumi@laposte.net> + * + * Created 15 Jan 2000 by Ghozlane Toumi + * + * Contributions (and many thanks) : + * + * 03/2001 James Simmons <jsimmons@infradead.org> + * 04/2001 Paul Mundt <lethal@chaoticdreams.org> + * 05/2001 Urs Ganse <ursg@uni.de> + * (initial work on voodoo2 port, interlace) + * 09/2002 Helge Deller <deller@gmx.de> + * (enable driver on big-endian machines (hppa), ioctl fixes) + * 12/2002 Helge Deller <deller@gmx.de> + * (port driver to new frambuffer infrastructure) + * 01/2003 Helge Deller <deller@gmx.de> + * (initial work on fb hardware acceleration for voodoo2) + * + */ + +/* + * The voodoo1 has the following memory mapped address space: + * 0x000000 - 0x3fffff : registers (4MB) + * 0x400000 - 0x7fffff : linear frame buffer (4MB) + * 0x800000 - 0xffffff : texture memory (8MB) + */ + +/* + * misc notes, TODOs, toASKs, and deep thoughts + +-TODO: at one time or another test that the mode is acceptable by the monitor +-ASK: Can I choose different ordering for the color bitfields (rgba argb ...) + wich one should i use ? is there any preferred one ? It seems ARGB is + the one ... +-TODO: in set_var check the validity of timings (hsync vsync)... +-TODO: check and recheck the use of sst_wait_idle : we don't flush the fifo via + a nop command. so it's ok as long as the commands we pass don't go + through the fifo. warning: issuing a nop command seems to need pci_fifo +-FIXME: in case of failure in the init sequence, be sure we return to a safe + state. +-FIXME: 4MB boards have banked memory (FbiInit2 bits 1 & 20) + */ + +/* + * debug info + * SST_DEBUG : enable debugging + * SST_DEBUG_REG : debug registers + * 0 : no debug + * 1 : dac calls, [un]set_bits, FbiInit + * 2 : insane debug level (log every register read/write) + * SST_DEBUG_FUNC : functions + * 0 : no debug + * 1 : function call / debug ioctl + * 2 : variables + * 3 : flood . you don't want to do that. trust me. + * SST_DEBUG_VAR : debug display/var structs + * 0 : no debug + * 1 : dumps display, fb_var + * + * sstfb specific ioctls: + * toggle vga (0x46db) : toggle vga_pass_through + * fill fb (0x46dc) : fills fb + * test disp (0x46de) : draws a test image + */ + +#undef SST_DEBUG + +/* enable 24/32 bpp functions ? (completely untested!) */ +#undef EN_24_32_BPP + +/* + Default video mode . + 0 800x600@60 took from glide + 1 640x480@75 took from glide + 2 1024x768@76 std fb.mode + 3 640x480@60 glide default */ +#define DEFAULT_MODE 3 + +/* + * Includes + */ + +#include <linux/config.h> +#include <linux/string.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/fb.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <asm/io.h> +#include <asm/ioctl.h> +#include <asm/uaccess.h> +#include <video/sstfb.h> + + +/* initialized by setup */ + +static int vgapass; /* enable Vga passthrough cable */ +static int mem; /* mem size in MB, 0 = autodetect */ +static int clipping = 1; /* use clipping (slower, safer) */ +static int gfxclk; /* force FBI freq in Mhz . Dangerous */ +static int slowpci; /* slow PCI settings */ + +static char *mode_option __devinitdata; + +enum { + ID_VOODOO1 = 0, + ID_VOODOO2 = 1, +}; + +#define IS_VOODOO2(par) ((par)->type == ID_VOODOO2) + +static struct sst_spec voodoo_spec[] __devinitdata = { + { .name = "Voodoo Graphics", .default_gfx_clock = 50000, .max_gfxclk = 60 }, + { .name = "Voodoo2", .default_gfx_clock = 75000, .max_gfxclk = 85 }, +}; + +static struct fb_var_screeninfo sstfb_default = +#if ( DEFAULT_MODE == 0 ) + { /* 800x600@60, 16 bpp .borowed from glide/sst1/include/sst1init.h */ + 800, 600, 800, 600, 0, 0, 16, 0, + {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, + 0, 0, -1, -1, 0, + 25000, 86, 41, 23, 1, 127, 4, + 0, FB_VMODE_NONINTERLACED }; +#elif ( DEFAULT_MODE == 1 ) + {/* 640x480@75, 16 bpp .borowed from glide/sst1/include/sst1init.h */ + 640, 480, 640, 480, 0, 0, 16, 0, + {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, + 0, 0, -1, -1, 0, + 31746, 118, 17, 16, 1, 63, 3, + 0, FB_VMODE_NONINTERLACED }; +#elif ( DEFAULT_MODE == 2 ) + { /* 1024x768@76 took from my /etc/fb.modes */ + 1024, 768, 1024, 768,0, 0, 16,0, + {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, + 0, 0, -1, -1, 0, + 11764, 208, 8, 36, 16, 120, 3 , + 0, FB_VMODE_NONINTERLACED }; +#elif ( DEFAULT_MODE == 3 ) + { /* 640x480@60 , 16bpp glide default ?*/ + 640, 480, 640, 480, 0, 0, 16, 0, + {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, + 0, 0, -1, -1, 0, + 39721 , 38, 26 , 25 ,18 , 96 ,2, + 0, FB_VMODE_NONINTERLACED }; +#elif + #error "Invalid DEFAULT_MODE value !" +#endif + + +/* + * debug functions + */ + +static void sstfb_drawdebugimage(struct fb_info *info); +static int sstfb_dump_regs(struct fb_info *info); + + +#if (SST_DEBUG_REG > 0) +static void sst_dbg_print_read_reg(u32 reg, u32 val) { + const char *regname; + switch (reg) { + case FBIINIT0: regname = "FbiInit0"; break; + case FBIINIT1: regname = "FbiInit1"; break; + case FBIINIT2: regname = "FbiInit2"; break; + case FBIINIT3: regname = "FbiInit3"; break; + case FBIINIT4: regname = "FbiInit4"; break; + case FBIINIT5: regname = "FbiInit5"; break; + case FBIINIT6: regname = "FbiInit6"; break; + default: regname = NULL; break; + } + if (regname == NULL) + r_ddprintk("sst_read(%#x): %#x\n", reg, val); + else + r_dprintk(" sst_read(%s): %#x\n", regname, val); +} + +static void sst_dbg_print_write_reg(u32 reg, u32 val) { + const char *regname; + switch (reg) { + case FBIINIT0: regname = "FbiInit0"; break; + case FBIINIT1: regname = "FbiInit1"; break; + case FBIINIT2: regname = "FbiInit2"; break; + case FBIINIT3: regname = "FbiInit3"; break; + case FBIINIT4: regname = "FbiInit4"; break; + case FBIINIT5: regname = "FbiInit5"; break; + case FBIINIT6: regname = "FbiInit6"; break; + default: regname = NULL; break; + } + if (regname == NULL) + r_ddprintk("sst_write(%#x, %#x)\n", reg, val); + else + r_dprintk(" sst_write(%s, %#x)\n", regname, val); +} +#else /* (SST_DEBUG_REG > 0) */ +# define sst_dbg_print_read_reg(reg, val) do {} while(0) +# define sst_dbg_print_write_reg(reg, val) do {} while(0) +#endif /* (SST_DEBUG_REG > 0) */ + +/* + * hardware access functions + */ + +/* register access */ +#define sst_read(reg) __sst_read(par->mmio_vbase, reg) +#define sst_write(reg,val) __sst_write(par->mmio_vbase, reg, val) +#define sst_set_bits(reg,val) __sst_set_bits(par->mmio_vbase, reg, val) +#define sst_unset_bits(reg,val) __sst_unset_bits(par->mmio_vbase, reg, val) +#define sst_dac_read(reg) __sst_dac_read(par->mmio_vbase, reg) +#define sst_dac_write(reg,val) __sst_dac_write(par->mmio_vbase, reg, val) +#define dac_i_read(reg) __dac_i_read(par->mmio_vbase, reg) +#define dac_i_write(reg,val) __dac_i_write(par->mmio_vbase, reg, val) + +static inline u32 __sst_read(u8 __iomem *vbase, u32 reg) +{ + u32 ret = readl(vbase + reg); + sst_dbg_print_read_reg(reg, ret); + return ret; +} + +static inline void __sst_write(u8 __iomem *vbase, u32 reg, u32 val) +{ + sst_dbg_print_write_reg(reg, val); + writel(val, vbase + reg); +} + +static inline void __sst_set_bits(u8 __iomem *vbase, u32 reg, u32 val) +{ + r_dprintk("sst_set_bits(%#x, %#x)\n", reg, val); + __sst_write(vbase, reg, __sst_read(vbase, reg) | val); +} + +static inline void __sst_unset_bits(u8 __iomem *vbase, u32 reg, u32 val) +{ + r_dprintk("sst_unset_bits(%#x, %#x)\n", reg, val); + __sst_write(vbase, reg, __sst_read(vbase, reg) & ~val); +} + +/* + * wait for the fbi chip. ASK: what happens if the fbi is stuck ? + * + * the FBI is supposed to be ready if we receive 5 time + * in a row a "idle" answer to our requests + */ + +#define sst_wait_idle() __sst_wait_idle(par->mmio_vbase) + +static int __sst_wait_idle(u8 __iomem *vbase) +{ + int count = 0; + + /* if (doFBINOP) __sst_write(vbase, NOPCMD, 0); */ + + while(1) { + if (__sst_read(vbase, STATUS) & STATUS_FBI_BUSY) { + f_dddprintk("status: busy\n"); +/* FIXME basicaly, this is a busy wait. maybe not that good. oh well; + * this is a small loop after all. + * Or maybe we should use mdelay() or udelay() here instead ? */ + count = 0; + } else { + count++; + f_dddprintk("status: idle(%d)\n", count); + } + if (count >= 5) return 1; +/* XXX do something to avoid hanging the machine if the voodoo is out */ + } +} + + +/* dac access */ +/* dac_read should be remaped to FbiInit2 (via the pci reg init_enable) */ +static u8 __sst_dac_read(u8 __iomem *vbase, u8 reg) +{ + u8 ret; + + reg &= 0x07; + __sst_write(vbase, DAC_DATA, ((u32)reg << 8) | DAC_READ_CMD ); + __sst_wait_idle(vbase); + /* udelay(10); */ + ret = __sst_read(vbase, DAC_READ) & 0xff; + r_dprintk("sst_dac_read(%#x): %#x\n", reg, ret); + + return ret; +} + +static void __sst_dac_write(u8 __iomem *vbase, u8 reg, u8 val) +{ + r_dprintk("sst_dac_write(%#x, %#x)\n", reg, val); + reg &= 0x07; + __sst_write(vbase, DAC_DATA,(((u32)reg << 8)) | (u32)val); +} + +/* indexed access to ti/att dacs */ +static u32 __dac_i_read(u8 __iomem *vbase, u8 reg) +{ + u32 ret; + + __sst_dac_write(vbase, DACREG_ADDR_I, reg); + ret = __sst_dac_read(vbase, DACREG_DATA_I); + r_dprintk("sst_dac_read_i(%#x): %#x\n", reg, ret); + return ret; +} +static void __dac_i_write(u8 __iomem *vbase, u8 reg,u8 val) +{ + r_dprintk("sst_dac_write_i(%#x, %#x)\n", reg, val); + __sst_dac_write(vbase, DACREG_ADDR_I, reg); + __sst_dac_write(vbase, DACREG_DATA_I, val); +} + +/* compute the m,n,p , returns the real freq + * (ics datasheet : N <-> N1 , P <-> N2) + * + * Fout= Fref * (M+2)/( 2^P * (N+2)) + * we try to get close to the asked freq + * with P as high, and M as low as possible + * range: + * ti/att : 0 <= M <= 255; 0 <= P <= 3; 0<= N <= 63 + * ics : 1 <= M <= 127; 0 <= P <= 3; 1<= N <= 31 + * we'll use the lowest limitation, should be precise enouth + */ +static int sst_calc_pll(const int freq, int *freq_out, struct pll_timing *t) +{ + int m, m2, n, p, best_err, fout; + int best_n = -1; + int best_m = -1; + + best_err = freq; + p = 3; + /* f * 2^P = vco should be less than VCOmax ~ 250 MHz for ics*/ + while (((1 << p) * freq > VCO_MAX) && (p >= 0)) + p--; + if (p == -1) + return -EINVAL; + for (n = 1; n < 32; n++) { + /* calc 2 * m so we can round it later*/ + m2 = (2 * freq * (1 << p) * (n + 2) ) / DAC_FREF - 4 ; + + m = (m2 % 2 ) ? m2/2+1 : m2/2 ; + if (m >= 128) + break; + fout = (DAC_FREF * (m + 2)) / ((1 << p) * (n + 2)); + if ((abs(fout - freq) < best_err) && (m > 0)) { + best_n = n; + best_m = m; + best_err = abs(fout - freq); + /* we get the lowest m , allowing 0.5% error in freq*/ + if (200*best_err < freq) break; + } + } + if (best_n == -1) /* unlikely, but who knows ? */ + return -EINVAL; + t->p = p; + t->n = best_n; + t->m = best_m; + *freq_out = (DAC_FREF * (t->m + 2)) / ((1 << t->p) * (t->n + 2)); + f_ddprintk ("m: %d, n: %d, p: %d, F: %dKhz\n", + t->m, t->n, t->p, *freq_out); + return 0; +} + +/* + * clear lfb screen + */ +static void sstfb_clear_screen(struct fb_info *info) +{ + /* clear screen */ + fb_memset(info->screen_base, 0, info->fix.smem_len); +} + + +/** + * sstfb_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 sstfb_check_var(struct fb_var_screeninfo *var, + struct fb_info *info) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + int hSyncOff = var->xres + var->right_margin + var->left_margin; + int vSyncOff = var->yres + var->lower_margin + var->upper_margin; + int vBackPorch = var->left_margin, yDim = var->yres; + int vSyncOn = var->vsync_len; + int tiles_in_X, real_length; + unsigned int freq; + + if (sst_calc_pll(PICOS2KHZ(var->pixclock), &freq, &par->pll)) { + eprintk("Pixclock at %ld KHZ out of range\n", + PICOS2KHZ(var->pixclock)); + return -EINVAL; + } + var->pixclock = KHZ2PICOS(freq); + + if (var->vmode & FB_VMODE_INTERLACED) + vBackPorch += (vBackPorch % 2); + if (var->vmode & FB_VMODE_DOUBLE) { + vBackPorch <<= 1; + yDim <<=1; + vSyncOn <<=1; + vSyncOff <<=1; + } + + switch (var->bits_per_pixel) { + case 0 ... 16 : + var->bits_per_pixel = 16; + break; +#ifdef EN_24_32_BPP + case 17 ... 24 : + var->bits_per_pixel = 24; + break; + case 25 ... 32 : + var->bits_per_pixel = 32; + break; +#endif + default : + eprintk("Unsupported bpp %d\n", var->bits_per_pixel); + return -EINVAL; + } + + /* validity tests */ + if ((var->xres <= 1) || (yDim <= 0 ) + || (var->hsync_len <= 1) + || (hSyncOff <= 1) + || (var->left_margin <= 2) + || (vSyncOn <= 0) + || (vSyncOff <= 0) + || (vBackPorch <= 0)) { + return -EINVAL; + } + + if (IS_VOODOO2(par)) { + /* Voodoo 2 limits */ + tiles_in_X = (var->xres + 63 ) / 64 * 2; + + if (((var->xres - 1) >= POW2(11)) || (yDim >= POW2(11))) { + eprintk("Unsupported resolution %dx%d\n", + var->xres, var->yres); + return -EINVAL; + } + + if (((var->hsync_len-1) >= POW2(9)) + || ((hSyncOff-1) >= POW2(11)) + || ((var->left_margin - 2) >= POW2(9)) + || (vSyncOn >= POW2(13)) + || (vSyncOff >= POW2(13)) + || (vBackPorch >= POW2(9)) + || (tiles_in_X >= POW2(6)) + || (tiles_in_X <= 0)) { + eprintk("Unsupported Timings\n"); + return -EINVAL; + } + } else { + /* Voodoo limits */ + tiles_in_X = (var->xres + 63 ) / 64; + + if (var->vmode) { + eprintk("Interlace/Doublescan not supported %#x\n", + var->vmode); + return -EINVAL; + } + if (((var->xres - 1) >= POW2(10)) || (var->yres >= POW2(10))) { + eprintk("Unsupported resolution %dx%d\n", + var->xres, var->yres); + return -EINVAL; + } + if (((var->hsync_len - 1) >= POW2(8)) + || ((hSyncOff-1) >= POW2(10)) + || ((var->left_margin - 2) >= POW2(8)) + || (vSyncOn >= POW2(12)) + || (vSyncOff >= POW2(12)) + || (vBackPorch >= POW2(8)) + || (tiles_in_X >= POW2(4)) + || (tiles_in_X <= 0)) { + eprintk("Unsupported Timings\n"); + return -EINVAL; + } + } + + /* it seems that the fbi uses tiles of 64x16 pixels to "map" the mem */ + /* FIXME: i don't like this... looks wrong */ + real_length = tiles_in_X * (IS_VOODOO2(par) ? 32 : 64 ) + * ((var->bits_per_pixel == 16) ? 2 : 4); + + if ((real_length * yDim) > info->fix.smem_len) { + eprintk("Not enough video memory\n"); + return -ENOMEM; + } + + var->sync &= (FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT); + var->vmode &= (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE); + var->xoffset = 0; + var->yoffset = 0; + var->height = -1; + var->width = -1; + + /* + * correct the color bit fields + */ + /* var->{red|green|blue}.msb_right = 0; */ + + switch (var->bits_per_pixel) { + case 16: /* RGB 565 LfbMode 0 */ + var->red.length = 5; + var->green.length = 6; + var->blue.length = 5; + var->transp.length = 0; + + var->red.offset = 11; + var->green.offset = 5; + var->blue.offset = 0; + var->transp.offset = 0; + break; +#ifdef EN_24_32_BPP + case 24: /* RGB 888 LfbMode 4 */ + case 32: /* ARGB 8888 LfbMode 5 */ + var->red.length = 8; + var->green.length = 8; + var->blue.length = 8; + var->transp.length = 0; + + var->red.offset = 16; + var->green.offset = 8; + var->blue.offset = 0; + var->transp.offset = 0; /* in 24bpp we fake a 32 bpp mode */ + break; +#endif + default: + return -EINVAL; + } + return 0; +} + +/** + * sstfb_set_par - Optional function. Alters the hardware state. + * @info: frame buffer structure that represents a single frame buffer + */ +static int sstfb_set_par(struct fb_info *info) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + u32 lfbmode, fbiinit1, fbiinit2, fbiinit3, fbiinit5, fbiinit6=0; + struct pci_dev *sst_dev = par->dev; + unsigned int freq; + int ntiles; + + par->hSyncOff = info->var.xres + info->var.right_margin + info->var.left_margin; + + par->yDim = info->var.yres; + par->vSyncOn = info->var.vsync_len; + par->vSyncOff = info->var.yres + info->var.lower_margin + info->var.upper_margin; + par->vBackPorch = info->var.upper_margin; + + /* We need par->pll */ + sst_calc_pll(PICOS2KHZ(info->var.pixclock), &freq, &par->pll); + + if (info->var.vmode & FB_VMODE_INTERLACED) + par->vBackPorch += (par->vBackPorch % 2); + if (info->var.vmode & FB_VMODE_DOUBLE) { + par->vBackPorch <<= 1; + par->yDim <<=1; + par->vSyncOn <<=1; + par->vSyncOff <<=1; + } + + if (IS_VOODOO2(par)) { + /* voodoo2 has 32 pixel wide tiles , BUT stange things + happen with odd number of tiles */ + par->tiles_in_X = (info->var.xres + 63 ) / 64 * 2; + } else { + /* voodoo1 has 64 pixels wide tiles. */ + par->tiles_in_X = (info->var.xres + 63 ) / 64; + } + + f_ddprintk("hsync_len hSyncOff vsync_len vSyncOff\n"); + f_ddprintk("%-7d %-8d %-7d %-8d\n", + info->var.hsync_len, par->hSyncOff, + par->vSyncOn, par->vSyncOff); + f_ddprintk("left_margin upper_margin xres yres Freq\n"); + f_ddprintk("%-10d %-10d %-4d %-4d %-8ld\n", + info->var.left_margin, info->var.upper_margin, + info->var.xres, info->var.yres, PICOS2KHZ(info->var.pixclock)); + + sst_write(NOPCMD, 0); + sst_wait_idle(); + pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, PCI_EN_INIT_WR); + sst_set_bits(FBIINIT1, VIDEO_RESET); + sst_set_bits(FBIINIT0, FBI_RESET | FIFO_RESET); + sst_unset_bits(FBIINIT2, EN_DRAM_REFRESH); + sst_wait_idle(); + + /*sst_unset_bits (FBIINIT0, FBI_RESET); / reenable FBI ? */ + + sst_write(BACKPORCH, par->vBackPorch << 16 | (info->var.left_margin - 2)); + sst_write(VIDEODIMENSIONS, par->yDim << 16 | (info->var.xres - 1)); + sst_write(HSYNC, (par->hSyncOff - 1) << 16 | (info->var.hsync_len - 1)); + sst_write(VSYNC, par->vSyncOff << 16 | par->vSyncOn); + + fbiinit2 = sst_read(FBIINIT2); + fbiinit3 = sst_read(FBIINIT3); + + /* everything is reset. we enable fbiinit2/3 remap : dac acces ok */ + pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, + PCI_EN_INIT_WR | PCI_REMAP_DAC ); + + par->dac_sw.set_vidmod(info, info->var.bits_per_pixel); + + /* set video clock */ + par->dac_sw.set_pll(info, &par->pll, VID_CLOCK); + + /* disable fbiinit2/3 remap */ + pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, + PCI_EN_INIT_WR); + + /* restore fbiinit2/3 */ + sst_write(FBIINIT2,fbiinit2); + sst_write(FBIINIT3,fbiinit3); + + fbiinit1 = (sst_read(FBIINIT1) & VIDEO_MASK) + | EN_DATA_OE + | EN_BLANK_OE + | EN_HVSYNC_OE + | EN_DCLK_OE + /* | (15 << TILES_IN_X_SHIFT) */ + | SEL_INPUT_VCLK_2X + /* | (2 << VCLK_2X_SEL_DEL_SHIFT) + | (2 << VCLK_DEL_SHIFT) */; +/* try with vclk_in_delay =0 (bits 29:30) , vclk_out_delay =0 (bits(27:28) + in (near) future set them accordingly to revision + resolution (cf glide) + first understand what it stands for :) + FIXME: there are some artefacts... check for the vclk_in_delay + lets try with 6ns delay in both vclk_out & in... + doh... they're still there :\ +*/ + + ntiles = par->tiles_in_X; + if (IS_VOODOO2(par)) { + fbiinit1 |= ((ntiles & 0x20) >> 5) << TILES_IN_X_MSB_SHIFT + | ((ntiles & 0x1e) >> 1) << TILES_IN_X_SHIFT; +/* as the only value of importance for us in fbiinit6 is tiles in X (lsb), + and as reading fbinit 6 will return crap (see FBIINIT6_DEFAULT) we just + write our value. BTW due to the dac unable to read odd number of tiles, this + field is always null ... */ + fbiinit6 = (ntiles & 0x1) << TILES_IN_X_LSB_SHIFT; + } + else + fbiinit1 |= ntiles << TILES_IN_X_SHIFT; + + switch (info->var.bits_per_pixel) { + case 16: + fbiinit1 |= SEL_SOURCE_VCLK_2X_SEL; + break; +#ifdef EN_24_32_BPP + case 24: + case 32: + /* sst_set_bits(FBIINIT1, SEL_SOURCE_VCLK_2X_DIV2 | EN_24BPP);*/ + fbiinit1 |= SEL_SOURCE_VCLK_2X_SEL | EN_24BPP; + break; +#endif + default: + return -EINVAL; + } + sst_write(FBIINIT1, fbiinit1); + if (IS_VOODOO2(par)) { + sst_write(FBIINIT6, fbiinit6); + fbiinit5=sst_read(FBIINIT5) & FBIINIT5_MASK ; + if (info->var.vmode & FB_VMODE_INTERLACED) + fbiinit5 |= INTERLACE; + if (info->var.vmode & FB_VMODE_DOUBLE) + fbiinit5 |= VDOUBLESCAN; + if (info->var.sync & FB_SYNC_HOR_HIGH_ACT) + fbiinit5 |= HSYNC_HIGH; + if (info->var.sync & FB_SYNC_VERT_HIGH_ACT) + fbiinit5 |= VSYNC_HIGH; + sst_write(FBIINIT5, fbiinit5); + } + sst_wait_idle(); + sst_unset_bits(FBIINIT1, VIDEO_RESET); + sst_unset_bits(FBIINIT0, FBI_RESET | FIFO_RESET); + sst_set_bits(FBIINIT2, EN_DRAM_REFRESH); + /* disables fbiinit writes */ + pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, PCI_EN_FIFO_WR); + + /* set lfbmode : set mode + front buffer for reads/writes + + disable pipeline */ + switch (info->var.bits_per_pixel) { + case 16: + lfbmode = LFB_565; + break; +#ifdef EN_24_32_BPP + case 24: + lfbmode = LFB_888; + break; + case 32: + lfbmode = LFB_8888; + break; +#endif + default: + return -EINVAL; + } + +#if defined(__BIG_ENDIAN) + /* Enable byte-swizzle functionality in hardware. + * With this enabled, all our read- and write-accesses to + * the voodoo framebuffer can be done in native format, and + * the hardware will automatically convert it to little-endian. + * - tested on HP-PARISC, Helge Deller <deller@gmx.de> */ + lfbmode |= ( LFB_WORD_SWIZZLE_WR | LFB_BYTE_SWIZZLE_WR | + LFB_WORD_SWIZZLE_RD | LFB_BYTE_SWIZZLE_RD ); +#endif + + if (clipping) { + sst_write(LFBMODE, lfbmode | EN_PXL_PIPELINE); + /* + * Set "clipping" dimensions. If clipping is disabled and + * writes to offscreen areas of the framebuffer are performed, + * the "behaviour is undefined" (_very_ undefined) - Urs + */ + /* btw, it requires enabling pixel pipeline in LFBMODE . + off screen read/writes will just wrap and read/print pixels + on screen. Ugly but not that dangerous */ + f_ddprintk("setting clipping dimensions 0..%d, 0..%d\n", + info->var.xres - 1, par->yDim - 1); + + sst_write(CLIP_LEFT_RIGHT, info->var.xres); + sst_write(CLIP_LOWY_HIGHY, par->yDim); + sst_set_bits(FBZMODE, EN_CLIPPING | EN_RGB_WRITE); + } else { + /* no clipping : direct access, no pipeline */ + sst_write(LFBMODE, lfbmode); + } + return 0; +} + +/** + * sstfb_setcolreg - Optional function. Sets a color register. + * @regno: hardware colormap register + * @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 sstfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, + u_int transp, struct fb_info *info) +{ + u32 col; + + f_dddprintk("sstfb_setcolreg\n"); + f_dddprintk("%-2d rgbt: %#x, %#x, %#x, %#x\n", + regno, red, green, blue, transp); + if (regno >= 16) + return -EINVAL; + + red >>= (16 - info->var.red.length); + green >>= (16 - info->var.green.length); + blue >>= (16 - info->var.blue.length); + transp >>= (16 - info->var.transp.length); + col = (red << info->var.red.offset) + | (green << info->var.green.offset) + | (blue << info->var.blue.offset) + | (transp << info->var.transp.offset); + + ((u32 *)info->pseudo_palette)[regno] = col; + + return 0; +} + +static int sstfb_ioctl(struct inode *inode, struct file *file, + u_int cmd, u_long arg, struct fb_info *info ) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + struct pci_dev *sst_dev = par->dev; + u32 fbiinit0, tmp, val; + u_long p; + + switch (cmd) { + + /* dump current FBIINIT values to system log */ + case _IO('F', 0xdb): /* 0x46db */ + return sstfb_dump_regs(info); + + /* fills lfb with #arg pixels */ + case _IOW('F', 0xdc, u32): /* 0x46dc */ + if (copy_from_user(&val, (void __user *)arg, sizeof(val))) + return -EFAULT; + if (val > info->fix.smem_len) + val = info->fix.smem_len; + printk("filling %#x \n", val); + for (p=0 ; p<val; p+=2) + writew(p >> 6, info->screen_base + p); + return 0; + + /* change VGA pass_through mode */ + case _IOW('F', 0xdd, u32): /* 0x46dd */ + if (copy_from_user(&val, (void __user *)arg, sizeof(val))) + return -EFAULT; + pci_read_config_dword(sst_dev, PCI_INIT_ENABLE, &tmp); + pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, + tmp | PCI_EN_INIT_WR ); + fbiinit0 = sst_read (FBIINIT0); + if (val) { + sst_write(FBIINIT0, fbiinit0 & ~EN_VGA_PASSTHROUGH); + iprintk("Disabling VGA pass-through\n"); + } else { + sst_write(FBIINIT0, fbiinit0 | EN_VGA_PASSTHROUGH); + iprintk("Enabling VGA pass-through\n"); + } + pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, tmp); + return 0; + + /* draw test image */ + case _IO('F', 0xde): /* 0x46de */ + f_dprintk("test color display at %d bpp\n", + info->var.bits_per_pixel); + sstfb_drawdebugimage(info); + return 0; + } + return -EINVAL; +} + + +/* + * Screen-to-Screen BitBlt 2D command (for the bmove fb op.) - Voodoo2 only + */ +#if 0 +static void sstfb_copyarea(struct fb_info *info, const struct fb_copyarea *area) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + u32 stride = info->fix.line_length; + + if (!IS_VOODOO2(par)) + return; + + sst_write(BLTSRCBASEADDR, 0); + sst_write(BLTDSTBASEADDR, 0); + sst_write(BLTROP, BLTROP_COPY); + sst_write(BLTXYSTRIDES, stride | (stride << 16)); + sst_write(BLTSRCXY, area->sx | (area->sy << 16)); + sst_write(BLTDSTXY, area->dx | (area->dy << 16)); + sst_write(BLTSIZE, area->width | (area->height << 16)); + sst_write(BLTCOMMAND, BLT_SCR2SCR_BITBLT | LAUNCH_BITBLT | + (BLT_16BPP_FMT << 3) /* | BIT(14) */ | BIT(15) ); + sst_wait_idle(); +} +#endif + + +/* + * FillRect 2D command (solidfill or invert (via ROP_XOR)) - Voodoo2 only + */ +static void sstfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + u32 stride = info->fix.line_length; + + if (!IS_VOODOO2(par)) + return; + + sst_write(BLTCLIPX, info->var.xres); + sst_write(BLTCLIPY, info->var.yres); + + sst_write(BLTDSTBASEADDR, 0); + sst_write(BLTCOLOR, rect->color); + sst_write(BLTROP, rect->rop == ROP_COPY ? BLTROP_COPY : BLTROP_XOR); + sst_write(BLTXYSTRIDES, stride | (stride << 16)); + sst_write(BLTDSTXY, rect->dx | (rect->dy << 16)); + sst_write(BLTSIZE, rect->width | (rect->height << 16)); + sst_write(BLTCOMMAND, BLT_RECFILL_BITBLT | LAUNCH_BITBLT + | (BLT_16BPP_FMT << 3) /* | BIT(14) */ | BIT(15) | BIT(16) ); + sst_wait_idle(); +} + + + +/* + * get lfb size + */ +static int __devinit sst_get_memsize(struct fb_info *info, __u32 *memsize) +{ + u8 __iomem *fbbase_virt = info->screen_base; + + /* force memsize */ + if ((mem >= 1 ) && (mem <= 4)) { + *memsize = (mem * 0x100000); + iprintk("supplied memsize: %#x\n", *memsize); + return 1; + } + + writel(0xdeadbeef, fbbase_virt); + writel(0xdeadbeef, fbbase_virt+0x100000); + writel(0xdeadbeef, fbbase_virt+0x200000); + f_ddprintk("0MB: %#x, 1MB: %#x, 2MB: %#x\n", + readl(fbbase_virt), readl(fbbase_virt + 0x100000), + readl(fbbase_virt + 0x200000)); + + writel(0xabcdef01, fbbase_virt); + + f_ddprintk("0MB: %#x, 1MB: %#x, 2MB: %#x\n", + readl(fbbase_virt), readl(fbbase_virt + 0x100000), + readl(fbbase_virt + 0x200000)); + + /* checks for 4mb lfb, then 2, then defaults to 1 */ + if (readl(fbbase_virt + 0x200000) == 0xdeadbeef) + *memsize = 0x400000; + else if (readl(fbbase_virt + 0x100000) == 0xdeadbeef) + *memsize = 0x200000; + else + *memsize = 0x100000; + f_ddprintk("detected memsize: %dMB\n", *memsize >> 20); + return 1; +} + + +/* + * DAC detection routines + */ + +/* fbi should be idle, and fifo emty and mem disabled */ +/* supposed to detect AT&T ATT20C409 and Ti TVP3409 ramdacs */ + +static int __devinit sst_detect_att(struct fb_info *info) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + int i, mir, dir; + + for (i=0; i<3; i++) { + sst_dac_write(DACREG_WMA, 0); /* backdoor */ + sst_dac_read(DACREG_RMR); /* read 4 times RMR */ + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + /* the fifth time, CR0 is read */ + sst_dac_read(DACREG_RMR); + /* the 6th, manufacturer id register */ + mir = sst_dac_read(DACREG_RMR); + /*the 7th, device ID register */ + dir = sst_dac_read(DACREG_RMR); + f_ddprintk("mir: %#x, dir: %#x\n", mir, dir); + if ((mir == DACREG_MIR_ATT ) && (dir == DACREG_DIR_ATT)) { + return 1; + } + } + return 0; +} + +static int __devinit sst_detect_ti(struct fb_info *info) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + int i, mir, dir; + + for (i = 0; i<3; i++) { + sst_dac_write(DACREG_WMA, 0); /* backdoor */ + sst_dac_read(DACREG_RMR); /* read 4 times RMR */ + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + /* the fifth time, CR0 is read */ + sst_dac_read(DACREG_RMR); + /* the 6th, manufacturer id register */ + mir = sst_dac_read(DACREG_RMR); + /*the 7th, device ID register */ + dir = sst_dac_read(DACREG_RMR); + f_ddprintk("mir: %#x, dir: %#x\n", mir, dir); + if ((mir == DACREG_MIR_TI ) && (dir == DACREG_DIR_TI)) { + return 1; + } + } + return 0; +} + +/* + * try to detect ICS5342 ramdac + * we get the 1st byte (M value) of preset f1,f7 and fB + * why those 3 ? mmmh... for now, i'll do it the glide way... + * and ask questions later. anyway, it seems that all the freq registers are + * realy at their default state (cf specs) so i ask again, why those 3 regs ? + * mmmmh.. it seems that's much more ugly than i thought. we use f0 and fA for + * pll programming, so in fact, we *hope* that the f1, f7 & fB won't be + * touched... + * is it realy safe ? how can i reset this ramdac ? geee... + */ +static int __devinit sst_detect_ics(struct fb_info *info) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + int m_clk0_1, m_clk0_7, m_clk1_b; + int n_clk0_1, n_clk0_7, n_clk1_b; + int i; + + for (i = 0; i<5; i++ ) { + sst_dac_write(DACREG_ICS_PLLRMA, 0x1); /* f1 */ + m_clk0_1 = sst_dac_read(DACREG_ICS_PLLDATA); + n_clk0_1 = sst_dac_read(DACREG_ICS_PLLDATA); + sst_dac_write(DACREG_ICS_PLLRMA, 0x7); /* f7 */ + m_clk0_7 = sst_dac_read(DACREG_ICS_PLLDATA); + n_clk0_7 = sst_dac_read(DACREG_ICS_PLLDATA); + sst_dac_write(DACREG_ICS_PLLRMA, 0xb); /* fB */ + m_clk1_b= sst_dac_read(DACREG_ICS_PLLDATA); + n_clk1_b= sst_dac_read(DACREG_ICS_PLLDATA); + f_ddprintk("m_clk0_1: %#x, m_clk0_7: %#x, m_clk1_b: %#x\n", + m_clk0_1, m_clk0_7, m_clk1_b); + f_ddprintk("n_clk0_1: %#x, n_clk0_7: %#x, n_clk1_b: %#x\n", + n_clk0_1, n_clk0_7, n_clk1_b); + if (( m_clk0_1 == DACREG_ICS_PLL_CLK0_1_INI) + && (m_clk0_7 == DACREG_ICS_PLL_CLK0_7_INI) + && (m_clk1_b == DACREG_ICS_PLL_CLK1_B_INI)) { + return 1; + } + } + return 0; +} + + +/* + * gfx, video, pci fifo should be reset, dram refresh disabled + * see detect_dac + */ + +static int sst_set_pll_att_ti(struct fb_info *info, + const struct pll_timing *t, const int clock) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + u8 cr0, cc; + + /* enable indexed mode */ + sst_dac_write(DACREG_WMA, 0); /* backdoor */ + sst_dac_read(DACREG_RMR); /* 1 time: RMR */ + sst_dac_read(DACREG_RMR); /* 2 RMR */ + sst_dac_read(DACREG_RMR); /* 3 // */ + sst_dac_read(DACREG_RMR); /* 4 // */ + cr0 = sst_dac_read(DACREG_RMR); /* 5 CR0 */ + + sst_dac_write(DACREG_WMA, 0); + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + sst_dac_write(DACREG_RMR, (cr0 & 0xf0) + | DACREG_CR0_EN_INDEXED + | DACREG_CR0_8BIT + | DACREG_CR0_PWDOWN ); + /* so, now we are in indexed mode . dunno if its common, but + i find this way of doing things a little bit weird :p */ + + udelay(300); + cc = dac_i_read(DACREG_CC_I); + switch (clock) { + case VID_CLOCK: + dac_i_write(DACREG_AC0_I, t->m); + dac_i_write(DACREG_AC1_I, t->p << 6 | t->n); + dac_i_write(DACREG_CC_I, + (cc & 0x0f) | DACREG_CC_CLKA | DACREG_CC_CLKA_C); + break; + case GFX_CLOCK: + dac_i_write(DACREG_BD0_I, t->m); + dac_i_write(DACREG_BD1_I, t->p << 6 | t->n); + dac_i_write(DACREG_CC_I, + (cc & 0xf0) | DACREG_CC_CLKB | DACREG_CC_CLKB_D); + break; + default: + dprintk("%s: wrong clock code '%d'\n", + __FUNCTION__, clock); + return 0; + } + udelay(300); + + /* power up the dac & return to "normal" non-indexed mode */ + dac_i_write(DACREG_CR0_I, + cr0 & ~DACREG_CR0_PWDOWN & ~DACREG_CR0_EN_INDEXED); + return 1; +} + +static int sst_set_pll_ics(struct fb_info *info, + const struct pll_timing *t, const int clock) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + u8 pll_ctrl; + + sst_dac_write(DACREG_ICS_PLLRMA, DACREG_ICS_PLL_CTRL); + pll_ctrl = sst_dac_read(DACREG_ICS_PLLDATA); + switch(clock) { + case VID_CLOCK: + sst_dac_write(DACREG_ICS_PLLWMA, 0x0); /* CLK0, f0 */ + sst_dac_write(DACREG_ICS_PLLDATA, t->m); + sst_dac_write(DACREG_ICS_PLLDATA, t->p << 5 | t->n); + /* selects freq f0 for clock 0 */ + sst_dac_write(DACREG_ICS_PLLWMA, DACREG_ICS_PLL_CTRL); + sst_dac_write(DACREG_ICS_PLLDATA, + (pll_ctrl & 0xd8) + | DACREG_ICS_CLK0 + | DACREG_ICS_CLK0_0); + break; + case GFX_CLOCK : + sst_dac_write(DACREG_ICS_PLLWMA, 0xa); /* CLK1, fA */ + sst_dac_write(DACREG_ICS_PLLDATA, t->m); + sst_dac_write(DACREG_ICS_PLLDATA, t->p << 5 | t->n); + /* selects freq fA for clock 1 */ + sst_dac_write(DACREG_ICS_PLLWMA, DACREG_ICS_PLL_CTRL); + sst_dac_write(DACREG_ICS_PLLDATA, + (pll_ctrl & 0xef) | DACREG_ICS_CLK1_A); + break; + default: + dprintk("%s: wrong clock code '%d'\n", + __FUNCTION__, clock); + return 0; + } + udelay(300); + return 1; +} + +static void sst_set_vidmod_att_ti(struct fb_info *info, const int bpp) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + u8 cr0; + + sst_dac_write(DACREG_WMA, 0); /* backdoor */ + sst_dac_read(DACREG_RMR); /* read 4 times RMR */ + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + /* the fifth time, CR0 is read */ + cr0 = sst_dac_read(DACREG_RMR); + + sst_dac_write(DACREG_WMA, 0); /* backdoor */ + sst_dac_read(DACREG_RMR); /* read 4 times RMR */ + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + sst_dac_read(DACREG_RMR); + /* cr0 */ + switch(bpp) { + case 16: + sst_dac_write(DACREG_RMR, (cr0 & 0x0f) | DACREG_CR0_16BPP); + break; +#ifdef EN_24_32_BPP + case 24: + case 32: + sst_dac_write(DACREG_RMR, (cr0 & 0x0f) | DACREG_CR0_24BPP); + break; +#endif + default: + dprintk("%s: bad depth '%u'\n", __FUNCTION__, bpp); + break; + } +} + +static void sst_set_vidmod_ics(struct fb_info *info, const int bpp) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + + switch(bpp) { + case 16: + sst_dac_write(DACREG_ICS_CMD, DACREG_ICS_CMD_16BPP); + break; +#ifdef EN_24_32_BPP + case 24: + case 32: + sst_dac_write(DACREG_ICS_CMD, DACREG_ICS_CMD_24BPP); + break; +#endif + default: + dprintk("%s: bad depth '%u'\n", __FUNCTION__, bpp); + break; + } +} + +/* + * detect dac type + * prerequisite : write to FbiInitx enabled, video and fbi and pci fifo reset, + * dram refresh disabled, FbiInit remaped. + * TODO: mmh.. maybe i shoud put the "prerequisite" in the func ... + */ + + +static struct dac_switch dacs[] __devinitdata = { + { .name = "TI TVP3409", + .detect = sst_detect_ti, + .set_pll = sst_set_pll_att_ti, + .set_vidmod = sst_set_vidmod_att_ti }, + + { .name = "AT&T ATT20C409", + .detect = sst_detect_att, + .set_pll = sst_set_pll_att_ti, + .set_vidmod = sst_set_vidmod_att_ti }, + { .name = "ICS ICS5342", + .detect = sst_detect_ics, + .set_pll = sst_set_pll_ics, + .set_vidmod = sst_set_vidmod_ics }, +}; + +static int __devinit sst_detect_dactype(struct fb_info *info, struct sstfb_par *par) +{ + int i, ret = 0; + + for (i=0; i<sizeof(dacs)/sizeof(dacs[0]); i++) { + ret = dacs[i].detect(info); + if (ret) break; + } + if (!ret) + return 0; + f_dprintk("%s found %s\n", __FUNCTION__, dacs[i].name); + par->dac_sw = dacs[i]; + return 1; +} + +/* + * Internal Routines + */ +static int __devinit sst_init(struct fb_info *info, struct sstfb_par *par) +{ + u32 fbiinit0, fbiinit1, fbiinit4; + struct pci_dev *dev = par->dev; + struct pll_timing gfx_timings; + struct sst_spec *spec; + int Fout; + + spec = &voodoo_spec[par->type]; + f_ddprintk(" fbiinit0 fbiinit1 fbiinit2 fbiinit3 fbiinit4 " + " fbiinit6\n"); + f_ddprintk("%0#10x %0#10x %0#10x %0#10x %0#10x %0#10x\n", + sst_read(FBIINIT0), sst_read(FBIINIT1), sst_read(FBIINIT2), + sst_read(FBIINIT3), sst_read(FBIINIT4), sst_read(FBIINIT6)); + /* disable video clock */ + pci_write_config_dword(dev, PCI_VCLK_DISABLE, 0); + + /* enable writing to init registers, disable pci fifo */ + pci_write_config_dword(dev, PCI_INIT_ENABLE, PCI_EN_INIT_WR); + /* reset video */ + sst_set_bits(FBIINIT1, VIDEO_RESET); + sst_wait_idle(); + /* reset gfx + pci fifo */ + sst_set_bits(FBIINIT0, FBI_RESET | FIFO_RESET); + sst_wait_idle(); + + /* unreset fifo */ + /*sst_unset_bits(FBIINIT0, FIFO_RESET); + sst_wait_idle();*/ + /* unreset FBI */ + /*sst_unset_bits(FBIINIT0, FBI_RESET); + sst_wait_idle();*/ + + /* disable dram refresh */ + sst_unset_bits(FBIINIT2, EN_DRAM_REFRESH); + sst_wait_idle(); + /* remap fbinit2/3 to dac */ + pci_write_config_dword(dev, PCI_INIT_ENABLE, + PCI_EN_INIT_WR | PCI_REMAP_DAC ); + /* detect dac type */ + if (!sst_detect_dactype(info, par)) { + eprintk("Unknown dac type\n"); + //FIXME watch it: we are not in a safe state, bad bad bad. + return 0; + } + + /* set graphic clock */ + par->gfx_clock = spec->default_gfx_clock; + if ((gfxclk >10 ) && (gfxclk < spec->max_gfxclk)) { + iprintk("Using supplied graphic freq : %dMHz\n", gfxclk); + par->gfx_clock = gfxclk *1000; + } else if (gfxclk) { + wprintk ("%dMhz is way out of spec! Using default\n", gfxclk); + } + + sst_calc_pll(par->gfx_clock, &Fout, &gfx_timings); + par->dac_sw.set_pll(info, &gfx_timings, GFX_CLOCK); + + /* disable fbiinit remap */ + pci_write_config_dword(dev, PCI_INIT_ENABLE, + PCI_EN_INIT_WR| PCI_EN_FIFO_WR ); + /* defaults init registers */ + /* FbiInit0: unreset gfx, unreset fifo */ + fbiinit0 = FBIINIT0_DEFAULT; + fbiinit1 = FBIINIT1_DEFAULT; + fbiinit4 = FBIINIT4_DEFAULT; + if (vgapass) + fbiinit0 &= ~EN_VGA_PASSTHROUGH; + else + fbiinit0 |= EN_VGA_PASSTHROUGH; + if (slowpci) { + fbiinit1 |= SLOW_PCI_WRITES; + fbiinit4 |= SLOW_PCI_READS; + } else { + fbiinit1 &= ~SLOW_PCI_WRITES; + fbiinit4 &= ~SLOW_PCI_READS; + } + sst_write(FBIINIT0, fbiinit0); + sst_wait_idle(); + sst_write(FBIINIT1, fbiinit1); + sst_wait_idle(); + sst_write(FBIINIT2, FBIINIT2_DEFAULT); + sst_wait_idle(); + sst_write(FBIINIT3, FBIINIT3_DEFAULT); + sst_wait_idle(); + sst_write(FBIINIT4, fbiinit4); + sst_wait_idle(); + if (IS_VOODOO2(par)) { + sst_write(FBIINIT6, FBIINIT6_DEFAULT); + sst_wait_idle(); + } + + pci_write_config_dword(dev, PCI_INIT_ENABLE, PCI_EN_FIFO_WR); + pci_write_config_dword(dev, PCI_VCLK_ENABLE, 0); + return 1; +} + +static void __devexit sst_shutdown(struct fb_info *info) +{ + struct sstfb_par *par = (struct sstfb_par *) info->par; + struct pci_dev *dev = par->dev; + struct pll_timing gfx_timings; + int Fout; + + /* reset video, gfx, fifo, disable dram + remap fbiinit2/3 */ + pci_write_config_dword(dev, PCI_INIT_ENABLE, PCI_EN_INIT_WR); + sst_set_bits(FBIINIT1, VIDEO_RESET | EN_BLANKING); + sst_unset_bits(FBIINIT2, EN_DRAM_REFRESH); + sst_set_bits(FBIINIT0, FBI_RESET | FIFO_RESET); + sst_wait_idle(); + pci_write_config_dword(dev, PCI_INIT_ENABLE, + PCI_EN_INIT_WR | PCI_REMAP_DAC); + /* set 20Mhz gfx clock */ + sst_calc_pll(20000, &Fout, &gfx_timings); + par->dac_sw.set_pll(info, &gfx_timings, GFX_CLOCK); + /* TODO maybe shutdown the dac, vrefresh and so on... */ + pci_write_config_dword(dev, PCI_INIT_ENABLE, + PCI_EN_INIT_WR); + sst_unset_bits(FBIINIT0, FBI_RESET | FIFO_RESET | EN_VGA_PASSTHROUGH); + pci_write_config_dword(dev, PCI_VCLK_DISABLE,0); + /* maybe keep fbiinit* and PCI_INIT_enable in the fb_info struct + * from start ? */ + pci_write_config_dword(dev, PCI_INIT_ENABLE, 0); + +} + +/* + * Interface to the world + */ +#ifndef MODULE +static int __init sstfb_setup(char *options) +{ + char *this_opt; + + if (!options || !*options) + return 0; + + while ((this_opt = strsep(&options, ",")) != NULL) { + if (!*this_opt) continue; + + f_ddprintk("option %s\n", this_opt); + + if (!strcmp(this_opt, "vganopass")) + vgapass = 0; + else if (!strcmp(this_opt, "vgapass")) + vgapass = 1; + else if (!strcmp(this_opt, "clipping")) + clipping = 1; + else if (!strcmp(this_opt, "noclipping")) + clipping = 0; + else if (!strcmp(this_opt, "fastpci")) + slowpci = 0; + else if (!strcmp(this_opt, "slowpci")) + slowpci = 1; + else if (!strncmp(this_opt, "mem:",4)) + mem = simple_strtoul (this_opt+4, NULL, 0); + else if (!strncmp(this_opt, "gfxclk:",7)) + gfxclk = simple_strtoul (this_opt+7, NULL, 0); + else + mode_option = this_opt; + } + return 0; +} +#endif + +static struct fb_ops sstfb_ops = { + .owner = THIS_MODULE, + .fb_check_var = sstfb_check_var, + .fb_set_par = sstfb_set_par, + .fb_setcolreg = sstfb_setcolreg, + .fb_fillrect = cfb_fillrect, /* sstfb_fillrect */ + .fb_copyarea = cfb_copyarea, /* sstfb_copyarea */ + .fb_imageblit = cfb_imageblit, + .fb_cursor = soft_cursor, + .fb_ioctl = sstfb_ioctl, +}; + +static int __devinit sstfb_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct fb_info *info; + struct fb_fix_screeninfo *fix; + struct sstfb_par *par; + struct sst_spec *spec; + int err; + + struct all_info { + struct fb_info info; + struct sstfb_par par; + u32 pseudo_palette[16]; + } *all; + + /* Enable device in PCI config. */ + if ((err=pci_enable_device(pdev))) { + eprintk("cannot enable device\n"); + return err; + } + + /* Allocate the fb and par structures. */ + all = kmalloc(sizeof(*all), GFP_KERNEL); + if (!all) + return -ENOMEM; + memset(all, 0, sizeof(*all)); + pci_set_drvdata(pdev, all); + + info = &all->info; + par = info->par = &all->par; + fix = &info->fix; + + par->type = id->driver_data; + spec = &voodoo_spec[par->type]; + f_ddprintk("found device : %s\n", spec->name); + + par->dev = pdev; + pci_read_config_byte(pdev, PCI_REVISION_ID, &par->revision); + + fix->mmio_start = pci_resource_start(pdev,0); + fix->mmio_len = 0x400000; + fix->smem_start = fix->mmio_start + 0x400000; + + if (!request_mem_region(fix->mmio_start, fix->mmio_len, "sstfb MMIO")) { + eprintk("cannot reserve mmio memory\n"); + goto fail_mmio_mem; + } + + if (!request_mem_region(fix->smem_start, 0x400000,"sstfb FB")) { + eprintk("cannot reserve fb memory\n"); + goto fail_fb_mem; + } + + par->mmio_vbase = ioremap_nocache(fix->mmio_start, + fix->mmio_len); + if (!par->mmio_vbase) { + eprintk("cannot remap register area %#lx\n", + fix->mmio_start); + goto fail_mmio_remap; + } + info->screen_base = ioremap_nocache(fix->smem_start, 0x400000); + if (!info->screen_base) { + eprintk("cannot remap framebuffer %#lx\n", + fix->smem_start); + goto fail_fb_remap; + } + + if (!sst_init(info, par)) { + eprintk("Init failed\n"); + goto fail; + } + sst_get_memsize(info, &fix->smem_len); + strlcpy(fix->id, spec->name, sizeof(fix->id)); + + iprintk("%s (revision %d) with %s dac\n", + fix->id, par->revision, par->dac_sw.name); + iprintk("framebuffer at %#lx, mapped to 0x%p, size %dMB\n", + fix->smem_start, info->screen_base, + fix->smem_len >> 20); + + f_ddprintk("regbase_virt: %#lx\n", par->mmio_vbase); + f_ddprintk("membase_phys: %#lx\n", fix->smem_start); + f_ddprintk("fbbase_virt: %p\n", info->screen_base); + + info->flags = FBINFO_DEFAULT; + info->fbops = &sstfb_ops; + info->pseudo_palette = &all->pseudo_palette; + + fix->type = FB_TYPE_PACKED_PIXELS; + fix->visual = FB_VISUAL_TRUECOLOR; + fix->accel = FB_ACCEL_NONE; /* FIXME */ + /* + * According to the specs, the linelength must be of 1024 *pixels* + * and the 24bpp mode is in fact a 32 bpp mode. + */ + fix->line_length = 2048; /* default value, for 24 or 32bit: 4096 */ + + if ( mode_option && + fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 16)) { + eprintk("can't set supplied video mode. Using default\n"); + info->var = sstfb_default; + } else + info->var = sstfb_default; + + if (sstfb_check_var(&info->var, info)) { + eprintk("invalid default video mode.\n"); + goto fail; + } + + if (sstfb_set_par(info)) { + eprintk("can't set default video mode.\n"); + goto fail; + } + + fb_alloc_cmap(&info->cmap, 256, 0); + + /* register fb */ + info->device = &pdev->dev; + if (register_framebuffer(info) < 0) { + eprintk("can't register framebuffer.\n"); + goto fail; + } + + if (1) /* set to 0 to see an initial bitmap instead */ + sstfb_clear_screen(info); + else + sstfb_drawdebugimage(info); + + printk(KERN_INFO "fb%d: %s frame buffer device at 0x%p\n", + info->node, fix->id, info->screen_base); + + return 0; + +fail: + iounmap(info->screen_base); +fail_fb_remap: + iounmap(par->mmio_vbase); +fail_mmio_remap: + release_mem_region(fix->smem_start, 0x400000); +fail_fb_mem: + release_mem_region(fix->mmio_start, info->fix.mmio_len); +fail_mmio_mem: + kfree(info); + return -ENXIO; /* no voodoo detected */ +} + +static void __devexit sstfb_remove(struct pci_dev *pdev) +{ + struct sstfb_par *par; + struct fb_info *info; + + info = pci_get_drvdata(pdev); + par = (struct sstfb_par *) info->par; + + sst_shutdown(info); + unregister_framebuffer(info); + iounmap(info->screen_base); + iounmap(par->mmio_vbase); + release_mem_region(info->fix.smem_start, 0x400000); + release_mem_region(info->fix.mmio_start, info->fix.mmio_len); + kfree(info); +} + + +static struct pci_device_id sstfb_id_tbl[] = { + { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, ID_VOODOO1 }, + { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO2, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, ID_VOODOO2 }, + { 0 }, +}; + +static struct pci_driver sstfb_driver = { + .name = "sstfb", + .id_table = sstfb_id_tbl, + .probe = sstfb_probe, + .remove = __devexit_p(sstfb_remove), +}; + + +static int __devinit sstfb_init(void) +{ +#ifndef MODULE + char *option = NULL; + + if (fb_get_options("sstfb", &option)) + return -ENODEV; + sstfb_setup(option); +#endif + return pci_register_driver(&sstfb_driver); +} + +#ifdef MODULE +static void __devexit sstfb_exit(void) +{ + pci_unregister_driver(&sstfb_driver); +} +#endif + + +/* + * testing and debugging functions + */ + +static int sstfb_dump_regs(struct fb_info *info) +{ +#ifdef SST_DEBUG + static struct { u32 reg ; const char *reg_name;} pci_regs[] = { + { PCI_INIT_ENABLE, "initenable"}, + { PCI_VCLK_ENABLE, "enable vclk"}, + { PCI_VCLK_DISABLE, "disable vclk"}, + }; + + static struct { u32 reg ; const char *reg_name;} sst_regs[] = { + {FBIINIT0,"fbiinit0"}, + {FBIINIT1,"fbiinit1"}, + {FBIINIT2,"fbiinit2"}, + {FBIINIT3,"fbiinit3"}, + {FBIINIT4,"fbiinit4"}, + {FBIINIT5,"fbiinit5"}, + {FBIINIT6,"fbiinit6"}, + {FBIINIT7,"fbiinit7"}, + {LFBMODE,"lfbmode"}, + {FBZMODE,"fbzmode"}, + }; + + const int pci_s = sizeof(pci_regs)/sizeof(pci_regs[0]); + const int sst_s = sizeof(sst_regs)/sizeof(sst_regs[0]); + struct sstfb_par *par = (struct sstfb_par *) info->par; + struct pci_dev *dev = par->dev; + u32 pci_res[pci_s]; + u32 sst_res[sst_s]; + int i; + + for (i=0; i<pci_s; i++) { + pci_read_config_dword(dev, pci_regs[i].reg, &pci_res[i]); + } + for (i=0; i<sst_s; i++) { + sst_res[i] = sst_read(sst_regs[i].reg); + } + + dprintk("hardware register dump:\n"); + for (i=0; i<pci_s; i++) { + dprintk("%s %0#10x\n", pci_regs[i].reg_name, pci_res[i]); + } + for (i=0; i<sst_s; i++) { + dprintk("%s %0#10x\n", sst_regs[i].reg_name, sst_res[i]); + } + return 0; +#else + return -EINVAL; +#endif +} + +static void sstfb_fillrect_softw( struct fb_info *info, const struct fb_fillrect *rect) +{ + u8 __iomem *fbbase_virt = info->screen_base; + int x, y, w = info->var.bits_per_pixel == 16 ? 2 : 4; + u32 color = rect->color, height = rect->height; + u8 __iomem *p; + + if (w==2) color |= color<<16; + for (y=rect->dy; height; y++, height--) { + p = fbbase_virt + y*info->fix.line_length + rect->dx*w; + x = rect->width; + if (w==2) x>>=1; + while (x) { + writel(color, p); + p += 4; + x--; + } + } +} + +static void sstfb_drawrect_XY( struct fb_info *info, int x, int y, + int w, int h, int color, int hwfunc) +{ + struct fb_fillrect rect; + rect.dx = x; + rect.dy = y; + rect.height = h; + rect.width = w; + rect.color = color; + rect.rop = ROP_COPY; + if (hwfunc) + sstfb_fillrect(info, &rect); + else + sstfb_fillrect_softw(info, &rect); +} + +/* print some squares on the fb */ +static void sstfb_drawdebugimage(struct fb_info *info) +{ + static int idx; + + /* clear screen */ + sstfb_clear_screen(info); + + idx = (idx+1) & 1; + + /* white rect */ + sstfb_drawrect_XY(info, 0, 0, 50, 50, 0xffff, idx); + + /* blue rect */ + sstfb_drawrect_XY(info, 50, 50, 50, 50, 0x001f, idx); + + /* green rect */ + sstfb_drawrect_XY(info, 100, 100, 80, 80, 0x07e0, idx); + + /* red rect */ + sstfb_drawrect_XY(info, 250, 250, 120, 100, 0xf800, idx); +} + +module_init(sstfb_init); + +#ifdef MODULE +module_exit(sstfb_exit); +#endif + +MODULE_AUTHOR("(c) 2000,2002 Ghozlane Toumi <gtoumi@laposte.net>"); +MODULE_DESCRIPTION("FBDev driver for 3dfx Voodoo Graphics and Voodoo2 based video boards"); +MODULE_LICENSE("GPL"); + +module_param(mem, int, 0); +MODULE_PARM_DESC(mem, "Size of frame buffer memory in MB (1, 2, 4 MB, default=autodetect)"); +module_param(vgapass, bool, 0); +MODULE_PARM_DESC(vgapass, "Enable VGA PassThrough mode (0 or 1) (default=0)"); +module_param(clipping, bool, 0); +MODULE_PARM_DESC(clipping, "Enable clipping (slower, safer) (0 or 1) (default=1)"); +module_param(gfxclk, int, 0); +MODULE_PARM_DESC(gfxclk, "Force graphic chip frequency in MHz. DANGEROUS. (default=auto)"); +module_param(slowpci, bool, 0); +MODULE_PARM_DESC(slowpci, "Uses slow PCI settings (0 or 1) (default=0)"); + |
