mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1533 lines
43 KiB
1533 lines
43 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* linux/drivers/video/sstfb.c -- voodoo graphics frame buffer |
|
* |
|
* Copyright (c) 2000-2002 Ghozlane Toumi <[email protected]> |
|
* |
|
* Created 15 Jan 2000 by Ghozlane Toumi |
|
* |
|
* Contributions (and many thanks) : |
|
* |
|
* 03/2001 James Simmons <[email protected]> |
|
* 04/2001 Paul Mundt <[email protected]> |
|
* 05/2001 Urs Ganse <[email protected]> |
|
* (initial work on voodoo2 port, interlace) |
|
* 09/2002 Helge Deller <[email protected]> |
|
* (enable driver on big-endian machines (hppa), ioctl fixes) |
|
* 12/2002 Helge Deller <[email protected]> |
|
* (port driver to new frambuffer infrastructure) |
|
* 01/2003 Helge Deller <[email protected]> |
|
* (initial work on fb hardware acceleration for voodoo2) |
|
* 08/2006 Alan Cox <[email protected]> |
|
* Remove never finished and bogus 24/32bit support |
|
* Clean up macro abuse |
|
* Minor tidying for format. |
|
* 12/2006 Helge Deller <[email protected]> |
|
* 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/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(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 <[email protected]> */ |
|
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_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_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; |
|
|
|
/* 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); |
|
strlcpy(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->flags = FBINFO_DEFAULT; |
|
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_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 <[email protected]>"); |
|
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 ")"); |
|
|
|
|