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android-kvm / linux / 7af541cee1e0eb48c6eb439bc6309175339fa96f / . / drivers / video / fbdev / sstfb.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
* 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)
* 08/2006 Alan Cox <alan@redhat.com>
* Remove never finished and bogus 24/32bit support
* Clean up macro abuse
* Minor tidying for format.
* 12/2006 Helge Deller <deller@gmx.de>
* add /sys/class/graphics/fbX/vgapass sysfs-interface
* add module option "mode_option" to set initial screen mode
* use fbdev default videomode database
* remove debug functions from ioctl
*/
/*
* 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 ...)
which 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: Use accelerator for 2D scroll
-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
*/
#undef SST_DEBUG
/*
* Includes
*/
#include <linux/aperture.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 <asm/io.h>
#include <linux/uaccess.h>
#include <video/sstfb.h>
/* initialized by setup */
static bool vgapass; /* enable VGA passthrough cable */
static int mem; /* mem size in MB, 0 = autodetect */
static bool clipping = 1; /* use clipping (slower, safer) */
static int gfxclk; /* force FBI freq in Mhz . Dangerous */
static bool slowpci; /* slow PCI settings */
/*
Possible default video modes: 800x600@60, 640x480@75, 1024x768@76, 640x480@60
*/
#define DEFAULT_VIDEO_MODE "640x480@60"
static char *mode_option = DEFAULT_VIDEO_MODE;
enum {
ID_VOODOO1 = 0,
ID_VOODOO2 = 1,
};
#define IS_VOODOO2(par) ((par)->type == ID_VOODOO2)
static struct sst_spec voodoo_spec[] = {
{ .name = "Voodoo Graphics", .default_gfx_clock = 50000, .max_gfxclk = 60 },
{ .name = "Voodoo2", .default_gfx_clock = 75000, .max_gfxclk = 85 },
};
/*
* debug functions
*/
#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 basically, 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);
__sst_wait_idle(vbase);
}
/* 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_io(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
*
* Limit to the abilities of a single chip as SLI is not supported
* by this driver.
*/
static int sstfb_check_var(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct sstfb_par *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)) {
printk(KERN_ERR "sstfb: 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;
default :
printk(KERN_ERR "sstfb: 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 > POW2(11) || yDim >= POW2(11)) {
printk(KERN_ERR "sstfb: Unsupported resolution %dx%d\n",
var->xres, var->yres);
return -EINVAL;
}
if (var->hsync_len > POW2(9) || hSyncOff > 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) {
printk(KERN_ERR "sstfb: Unsupported timings\n");
return -EINVAL;
}
} else {
/* Voodoo limits */
tiles_in_X = (var->xres + 63 ) / 64;
if (var->vmode) {
printk(KERN_ERR "sstfb: Interlace/doublescan not supported %#x\n",
var->vmode);
return -EINVAL;
}
if (var->xres > POW2(10) || var->yres >= POW2(10)) {
printk(KERN_ERR "sstfb: Unsupported resolution %dx%d\n",
var->xres, var->yres);
return -EINVAL;
}
if (var->hsync_len > 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) {
printk(KERN_ERR "sstfb: 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) {
printk(KERN_ERR "sstfb: 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;
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 = 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 strange 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 access 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;
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;
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)
{
struct sstfb_par *par = info->par;
u32 col;
f_dddprintk("sstfb_setcolreg\n");
f_dddprintk("%-2d rgbt: %#x, %#x, %#x, %#x\n",
regno, red, green, blue, transp);
if (regno > 15)
return 0;
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);
par->palette[regno] = col;
return 0;
}
static void sstfb_setvgapass( struct fb_info *info, int enable )
{
struct sstfb_par *par = info->par;
struct pci_dev *sst_dev = par->dev;
u32 fbiinit0, tmp;
enable = enable ? 1:0;
if (par->vgapass == enable)
return;
par->vgapass = enable;
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 (par->vgapass) {
sst_write(FBIINIT0, fbiinit0 & ~DIS_VGA_PASSTHROUGH);
fb_info(info, "Enabling VGA pass-through\n");
} else {
sst_write(FBIINIT0, fbiinit0 | DIS_VGA_PASSTHROUGH);
fb_info(info, "Disabling VGA pass-through\n");
}
pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, tmp);
}
static ssize_t store_vgapass(struct device *device, struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *info = dev_get_drvdata(device);
char ** last = NULL;
int val;
val = simple_strtoul(buf, last, 0);
sstfb_setvgapass(info, val);
return count;
}
static ssize_t show_vgapass(struct device *device, struct device_attribute *attr,
char *buf)
{
struct fb_info *info = dev_get_drvdata(device);
struct sstfb_par *par = info->par;
return sprintf(buf, "%d\n", par->vgapass);
}
static struct device_attribute device_attrs[] = {
__ATTR(vgapass, S_IRUGO|S_IWUSR, show_vgapass, store_vgapass)
};
static int sstfb_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
struct sstfb_par *par;
u32 val;
switch (cmd) {
/* set/get VGA pass_through mode */
case SSTFB_SET_VGAPASS:
if (copy_from_user(&val, (void __user *)arg, sizeof(val)))
return -EFAULT;
sstfb_setvgapass(info, val);
return 0;
case SSTFB_GET_VGAPASS:
par = info->par;
val = par->vgapass;
if (copy_to_user((void __user *)arg, &val, sizeof(val)))
return -EFAULT;
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 = 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
*/
#if 0
static void sstfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct sstfb_par *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();
}
#endif
/*
* get lfb size
*/
static int 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);
printk(KERN_INFO "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 sst_detect_att(struct fb_info *info)
{
struct sstfb_par *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 sst_detect_ti(struct fb_info *info)
{
struct sstfb_par *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
* really 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 really safe ? how can i reset this ramdac ? geee...
*/
static int sst_detect_ics(struct fb_info *info)
{
struct sstfb_par *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 = 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",
__func__, 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 = 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",
__func__, 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 = 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;
default:
dprintk("%s: bad depth '%u'\n", __func__, bpp);
break;
}
}
static void sst_set_vidmod_ics(struct fb_info *info, const int bpp)
{
struct sstfb_par *par = info->par;
switch(bpp) {
case 16:
sst_dac_write(DACREG_ICS_CMD, DACREG_ICS_CMD_16BPP);
break;
default:
dprintk("%s: bad depth '%u'\n", __func__, 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 should put the "prerequisite" in the func ...
*/
static struct dac_switch dacs[] = {
{ .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 sst_detect_dactype(struct fb_info *info, struct sstfb_par *par)
{
int i, ret = 0;
for (i = 0; i < ARRAY_SIZE(dacs); i++) {
ret = dacs[i].detect(info);
if (ret)
break;
}
if (!ret)
return 0;
f_dprintk("%s found %s\n", __func__, dacs[i].name);
par->dac_sw = dacs[i];
return 1;
}
/*
* Internal Routines
*/
static int 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;
int gfx_clock;
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)) {
printk(KERN_ERR "sstfb: unknown dac type.\n");
//FIXME watch it: we are not in a safe state, bad bad bad.
return 0;
}
/* set graphic clock */
gfx_clock = spec->default_gfx_clock;
if ((gfxclk >10 ) && (gfxclk < spec->max_gfxclk)) {
printk(KERN_INFO "sstfb: Using supplied graphic freq : %dMHz\n", gfxclk);
gfx_clock = gfxclk *1000;
} else if (gfxclk) {
printk(KERN_WARNING "sstfb: %dMhz is way out of spec! Using default\n", gfxclk);
}
sst_calc_pll(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;
par->vgapass = vgapass;
if (par->vgapass)
fbiinit0 &= ~DIS_VGA_PASSTHROUGH;
else
fbiinit0 |= DIS_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 sst_shutdown(struct fb_info *info)
{
struct sstfb_par *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 | DIS_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
*/
static int 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;
}
static const struct fb_ops sstfb_ops = {
.owner = THIS_MODULE,
FB_DEFAULT_IOMEM_OPS,
.fb_check_var = sstfb_check_var,
.fb_set_par = sstfb_set_par,
.fb_setcolreg = sstfb_setcolreg,
.fb_ioctl = sstfb_ioctl,
};
static int 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;
err = aperture_remove_conflicting_pci_devices(pdev, "sstfb");
if (err)
return err;
/* Enable device in PCI config. */
if ((err=pci_enable_device(pdev))) {
printk(KERN_ERR "cannot enable device\n");
return err;
}
/* Allocate the fb and par structures. */
info = framebuffer_alloc(sizeof(struct sstfb_par), &pdev->dev);
if (!info)
return -ENOMEM;
pci_set_drvdata(pdev, info);
par = info->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;
par->revision = pdev->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")) {
printk(KERN_ERR "sstfb: cannot reserve mmio memory\n");
goto fail_mmio_mem;
}
if (!request_mem_region(fix->smem_start, 0x400000,"sstfb FB")) {
printk(KERN_ERR "sstfb: cannot reserve fb memory\n");
goto fail_fb_mem;
}
par->mmio_vbase = ioremap(fix->mmio_start,
fix->mmio_len);
if (!par->mmio_vbase) {
printk(KERN_ERR "sstfb: cannot remap register area %#lx\n",
fix->mmio_start);
goto fail_mmio_remap;
}
info->screen_base = ioremap(fix->smem_start, 0x400000);
if (!info->screen_base) {
printk(KERN_ERR "sstfb: cannot remap framebuffer %#lx\n",
fix->smem_start);
goto fail_fb_remap;
}
if (!sst_init(info, par)) {
printk(KERN_ERR "sstfb: Init failed\n");
goto fail;
}
sst_get_memsize(info, &fix->smem_len);
strscpy(fix->id, spec->name, sizeof(fix->id));
printk(KERN_INFO "%s (revision %d) with %s dac\n",
fix->id, par->revision, par->dac_sw.name);
printk(KERN_INFO "framebuffer at %#lx, mapped to 0x%p, size %dMB\n",
fix->smem_start, info->screen_base,
fix->smem_len >> 20);
f_ddprintk("regbase_virt: %p\n", par->mmio_vbase);
f_ddprintk("membase_phys: %#lx\n", fix->smem_start);
f_ddprintk("fbbase_virt: %p\n", info->screen_base);
info->fbops = &sstfb_ops;
info->pseudo_palette = par->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 (and both are in
* fact dithered to 16bit).
*/
fix->line_length = 2048; /* default value, for 24 or 32bit: 4096 */
fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 16);
if (sstfb_check_var(&info->var, info)) {
printk(KERN_ERR "sstfb: invalid video mode.\n");
goto fail;
}
if (sstfb_set_par(info)) {
printk(KERN_ERR "sstfb: can't set default video mode.\n");
goto fail;
}
if (fb_alloc_cmap(&info->cmap, 256, 0)) {
printk(KERN_ERR "sstfb: can't alloc cmap memory.\n");
goto fail;
}
/* register fb */
info->device = &pdev->dev;
if (register_framebuffer(info) < 0) {
printk(KERN_ERR "sstfb: can't register framebuffer.\n");
goto fail_register;
}
sstfb_clear_screen(info);
if (device_create_file(info->dev, &device_attrs[0]))
printk(KERN_WARNING "sstfb: can't create sysfs entry.\n");
fb_info(info, "%s frame buffer device at 0x%p\n",
fix->id, info->screen_base);
return 0;
fail_register:
fb_dealloc_cmap(&info->cmap);
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:
framebuffer_release(info);
return -ENXIO; /* no voodoo detected */
}
static void sstfb_remove(struct pci_dev *pdev)
{
struct sstfb_par *par;
struct fb_info *info;
info = pci_get_drvdata(pdev);
par = info->par;
device_remove_file(info->dev, &device_attrs[0]);
sst_shutdown(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);
fb_dealloc_cmap(&info->cmap);
unregister_framebuffer(info);
framebuffer_release(info);
}
static const struct pci_device_id sstfb_id_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO ),
.driver_data = ID_VOODOO1, },
{ PCI_DEVICE(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO2),
.driver_data = ID_VOODOO2, },
{ 0 },
};
static struct pci_driver sstfb_driver = {
.name = "sstfb",
.id_table = sstfb_id_tbl,
.probe = sstfb_probe,
.remove = sstfb_remove,
};
static int sstfb_init(void)
{
char *option = NULL;
if (fb_modesetting_disabled("sstfb"))
return -ENODEV;
if (fb_get_options("sstfb", &option))
return -ENODEV;
sstfb_setup(option);
return pci_register_driver(&sstfb_driver);
}
static void sstfb_exit(void)
{
pci_unregister_driver(&sstfb_driver);
}
module_init(sstfb_init);
module_exit(sstfb_exit);
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)");
module_param(mode_option, charp, 0);
MODULE_PARM_DESC(mode_option, "Initial video mode (default=" DEFAULT_VIDEO_MODE ")");