/* $Id: aty128fb.c,v 1.1.1.1.36.1 1999/12/11 09:03:05 Exp $
* linux/drivers/video/aty128fb.c -- Frame buffer device for ATI Rage128
*
* Copyright (C) 1999-2000, Brad Douglas <brad@neruo.com>
* Copyright (C) 1999, Anthony Tong <atong@uiuc.edu>
*
* Ani Joshi / Jeff Garzik
* - Code cleanup
*
* Michel D�nzer <michdaen@iiic.ethz.ch>
* - 15/16 bit cleanup
* - fix panning
*
* Benjamin Herrenschmidt
* - pmac-specific PM stuff
*
* Andreas Hundt <andi@convergence.de>
* - FB_ACTIVATE fixes
*
* Based off of Geert's atyfb.c and vfb.c.
*
* TODO:
* - monitor sensing (DDC)
* - virtual display
* - other platform support (only ppc/x86 supported)
* - hardware cursor support
* - ioctl()'s
*
* Please cc: your patches to brad@neruo.com.
*/
/*
* A special note of gratitude to ATI's devrel for providing documentation,
* example code and hardware. Thanks Nitya. -atong and brad
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <asm/uaccess.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/selection.h>
#include <linux/console.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <asm/io.h>
#ifdef CONFIG_PPC
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#include <video/macmodes.h>
#ifdef CONFIG_NVRAM
#include <linux/nvram.h>
#endif
#endif
#ifdef CONFIG_ADB_PMU
#include <linux/adb.h>
#include <linux/pmu.h>
#endif
#ifdef CONFIG_PMAC_BACKLIGHT
#include <asm/backlight.h>
#endif
#ifdef CONFIG_FB_COMPAT_XPMAC
#include <asm/vc_ioctl.h>
#endif
#ifdef CONFIG_BOOTX_TEXT
#include <asm/btext.h>
#endif /* CONFIG_BOOTX_TEXT */
#include <video/fbcon.h>
#include <video/fbcon-cfb8.h>
#include <video/fbcon-cfb16.h>
#include <video/fbcon-cfb24.h>
#include <video/fbcon-cfb32.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
#include "aty128.h"
/* Debug flag */
#undef DEBUG
#ifdef DEBUG
#define DBG(fmt, args...) printk(KERN_DEBUG "aty128fb: %s " fmt, __FUNCTION__, ##args);
#else
#define DBG(fmt, args...)
#endif
#ifndef CONFIG_PPC
/* default mode */
static struct fb_var_screeninfo default_var __initdata = {
/* 640x480, 60 Hz, Non-Interlaced (25.175 MHz dotclock) */
640, 480, 640, 480, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, 0, 39722, 48, 16, 33, 10, 96, 2,
0, FB_VMODE_NONINTERLACED
};
#else /* CONFIG_PPC */
/* default to 1024x768 at 75Hz on PPC - this will work
* on the iMac, the usual 640x480 @ 60Hz doesn't. */
static struct fb_var_screeninfo default_var = {
/* 1024x768, 75 Hz, Non-Interlaced (78.75 MHz dotclock) */
1024, 768, 1024, 768, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, 0, 12699, 160, 32, 28, 1, 96, 3,
FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
};
#endif /* CONFIG_PPC */
/* default modedb mode */
/* 640x480, 60 Hz, Non-Interlaced (25.172 MHz dotclock) */
static struct fb_videomode defaultmode __initdata = {
refresh: 60,
xres: 640,
yres: 480,
pixclock: 39722,
left_margin: 48,
right_margin: 16,
upper_margin: 33,
lower_margin: 10,
hsync_len: 96,
vsync_len: 2,
sync: 0,
vmode: FB_VMODE_NONINTERLACED
};
/* struct to hold chip description information */
struct aty128_chip_info {
const char *name;
unsigned short device;
int chip_gen;
};
/* Chip generations */
enum {
rage_128,
rage_128_pro,
rage_M3
};
/* supported Rage128 chipsets */
static struct aty128_chip_info aty128_pci_probe_list[] __initdata =
{
{"Rage128 RE (PCI)", PCI_DEVICE_ID_ATI_RAGE128_RE, rage_128},
{"Rage128 RF (AGP)", PCI_DEVICE_ID_ATI_RAGE128_RF, rage_128},
{"Rage128 RK (PCI)", PCI_DEVICE_ID_ATI_RAGE128_RK, rage_128},
{"Rage128 RL (AGP)", PCI_DEVICE_ID_ATI_RAGE128_RL, rage_128},
{"Rage128 Pro PF (AGP)", PCI_DEVICE_ID_ATI_RAGE128_PF, rage_128_pro},
{"Rage128 Pro PR (PCI)", PCI_DEVICE_ID_ATI_RAGE128_PR, rage_128_pro},
{"Rage128 Pro TR (AGP)", PCI_DEVICE_ID_ATI_RAGE128_U3, rage_128_pro},
{"Rage128 Pro TF (AGP)", PCI_DEVICE_ID_ATI_RAGE128_U1, rage_128_pro},
{"Rage Mobility M3 (PCI)", PCI_DEVICE_ID_ATI_RAGE128_LE, rage_M3},
{"Rage Mobility M3 (AGP)", PCI_DEVICE_ID_ATI_RAGE128_LF, rage_M3},
{NULL, 0, rage_128}
};
/* packed BIOS settings */
#ifndef CONFIG_PPC
typedef struct {
u8 clock_chip_type;
u8 struct_size;
u8 accelerator_entry;
u8 VGA_entry;
u16 VGA_table_offset;
u16 POST_table_offset;
u16 XCLK;
u16 MCLK;
u8 num_PLL_blocks;
u8 size_PLL_blocks;
u16 PCLK_ref_freq;
u16 PCLK_ref_divider;
u32 PCLK_min_freq;
u32 PCLK_max_freq;
u16 MCLK_ref_freq;
u16 MCLK_ref_divider;
u32 MCLK_min_freq;
u32 MCLK_max_freq;
u16 XCLK_ref_freq;
u16 XCLK_ref_divider;
u32 XCLK_min_freq;
u32 XCLK_max_freq;
} __attribute__ ((packed)) PLL_BLOCK;
#endif /* !CONFIG_PPC */
/* onboard memory information */
struct aty128_meminfo {
u8 ML;
u8 MB;
u8 Trcd;
u8 Trp;
u8 Twr;
u8 CL;
u8 Tr2w;
u8 LoopLatency;
u8 DspOn;
u8 Rloop;
const char *name;
};
/* various memory configurations */
static const struct aty128_meminfo sdr_128 =
{ 4, 4, 3, 3, 1, 3, 1, 16, 30, 16, "128-bit SDR SGRAM (1:1)" };
static const struct aty128_meminfo sdr_64 =
{ 4, 8, 3, 3, 1, 3, 1, 17, 46, 17, "64-bit SDR SGRAM (1:1)" };
static const struct aty128_meminfo sdr_sgram =
{ 4, 4, 1, 2, 1, 2, 1, 16, 24, 16, "64-bit SDR SGRAM (2:1)" };
static const struct aty128_meminfo ddr_sgram =
{ 4, 4, 3, 3, 2, 3, 1, 16, 31, 16, "64-bit DDR SGRAM" };
static const char *aty128fb_name = "ATY Rage128";
static char fontname[40] __initdata = { 0 };
static int noaccel __initdata = 0;
static char *font __initdata = NULL;
static char *mode __initdata = NULL;
static int nomtrr __initdata = 0;
static char *mode_option __initdata = NULL;
#ifdef CONFIG_PPC
static int default_vmode __initdata = VMODE_1024_768_60;
static int default_cmode __initdata = CMODE_8;
#endif
#ifdef CONFIG_PMAC_PBOOK
static int default_crt_on __initdata = 0;
static int default_lcd_on __initdata = 1;
#endif
#ifdef CONFIG_MTRR
static int mtrr = 1;
#endif
/* PLL constants */
struct aty128_constants {
u32 dotclock;
u32 ppll_min;
u32 ppll_max;
u32 ref_divider;
u32 xclk;
u32 fifo_width;
u32 fifo_depth;
};
struct aty128_crtc {
u32 gen_cntl;
u32 ext_cntl;
u32 h_total, h_sync_strt_wid;
u32 v_total, v_sync_strt_wid;
u32 pitch;
u32 offset, offset_cntl;
u32 xoffset, yoffset;
u32 vxres, vyres;
u32 depth, bpp;
};
struct aty128_pll {
u32 post_divider;
u32 feedback_divider;
u32 vclk;
};
struct aty128_ddafifo {
u32 dda_config;
u32 dda_on_off;
};
/* register values for a specific mode */
struct aty128fb_par {
struct aty128_crtc crtc;
struct aty128_pll pll;
struct aty128_ddafifo fifo_reg;
u32 accel_flags;
};
struct fb_info_aty128 {
struct fb_info fb_info;
struct fb_info_aty128 *next;
struct aty128_constants constants; /* PLL and others */
unsigned long regbase_phys; /* physical mmio */
void *regbase; /* remapped mmio */
unsigned long frame_buffer_phys; /* physical fb memory */
void *frame_buffer; /* remaped framebuffer */
u32 vram_size; /* onboard video ram */
int chip_gen;
const struct aty128_meminfo *mem; /* onboard mem info */
struct aty128fb_par default_par, current_par;
struct display disp;
struct { u8 red, green, blue, pad; } palette[256];
union {
#ifdef FBCON_HAS_CFB16
u16 cfb16[16];
#endif
#ifdef FBCON_HAS_CFB24
u32 cfb24[16];
#endif
#ifdef FBCON_HAS_CFB32
u32 cfb32[16];
#endif
} fbcon_cmap;
#ifdef CONFIG_PCI
struct pci_dev *pdev;
#endif
#ifdef CONFIG_MTRR
struct { int vram; int vram_valid; } mtrr;
#endif
int currcon;
int blitter_may_be_busy;
int fifo_slots; /* free slots in FIFO (64 max) */
#ifdef CONFIG_PMAC_PBOOK
unsigned char *save_framebuffer;
int pm_reg;
int crt_on, lcd_on;
u32 save_lcd_gen_cntl;
#endif
};
static struct fb_info_aty128 *board_list = NULL;
#ifdef CONFIG_PMAC_PBOOK
int aty128_sleep_notify(struct pmu_sleep_notifier *self, int when);
static struct pmu_sleep_notifier aty128_sleep_notifier = {
aty128_sleep_notify, SLEEP_LEVEL_VIDEO,
};
#endif
#define round_div(n, d) ((n+(d/2))/d)
/*
* Interface used by the world
*/
int aty128fb_setup(char *options);
static int aty128fb_get_fix(struct fb_fix_screeninfo *fix, int con,
struct fb_info *info);
static int aty128fb_get_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
static int aty128fb_set_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
static int aty128fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info);
static int aty128fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info);
static int aty128fb_pan_display(struct fb_var_screeninfo *var, int con,
struct fb_info *fb);
static int aty128fb_ioctl(struct inode *inode, struct file *file, u_int cmd,
u_long arg, int con, struct fb_info *info);
static int aty128fb_rasterimg(struct fb_info *info, int start);
/*
* Interface to the low level console driver
*/
int aty128fb_init(void);
static int aty128fbcon_switch(int con, struct fb_info *fb);
static void aty128fbcon_blank(int blank, struct fb_info *fb);
/*
* Internal routines
*/
static void aty128_encode_fix(struct fb_fix_screeninfo *fix,
struct aty128fb_par *par,
const struct fb_info_aty128 *info);
static void aty128_set_dispsw(struct display *disp,
struct fb_info_aty128 *info, int bpp, int accel);
static int aty128_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
u_int *transp, struct fb_info *info);
static int aty128_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info);
static void do_install_cmap(int con, struct fb_info *info);
static int aty128_encode_var(struct fb_var_screeninfo *var,
const struct aty128fb_par *par,
const struct fb_info_aty128 *info);
static int aty128_decode_var(struct fb_var_screeninfo *var,
struct aty128fb_par *par,
const struct fb_info_aty128 *info);
static int aty128_pci_register(struct pci_dev *pdev,
const struct aty128_chip_info *aci);
static struct fb_info_aty128 *aty128_board_list_add(struct fb_info_aty128
*board_list, struct fb_info_aty128 *new_node);
#if !defined(CONFIG_PPC) && !defined(__sparc__)
static void __init aty128_get_pllinfo(struct fb_info_aty128 *info,
char *bios_seg);
static char __init *aty128find_ROM(struct fb_info_aty128 *info);
#endif
static void aty128_timings(struct fb_info_aty128 *info);
static void aty128_init_engine(const struct aty128fb_par *par,
struct fb_info_aty128 *info);
static void aty128_reset_engine(const struct fb_info_aty128 *info);
static void aty128_flush_pixel_cache(const struct fb_info_aty128 *info);
static void do_wait_for_fifo(u16 entries, struct fb_info_aty128 *info);
static void wait_for_fifo(u16 entries, struct fb_info_aty128 *info);
static void wait_for_idle(struct fb_info_aty128 *info);
static u32 depth_to_dst(u32 depth);
#ifdef FBCON_HAS_CFB8
static struct display_switch fbcon_aty128_8;
static void fbcon_aty8_putc(struct vc_data *conp, struct display *p,
int c, int yy, int xx);
static void fbcon_aty8_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count,
int yy, int xx);
#endif
#ifdef FBCON_HAS_CFB16
static struct display_switch fbcon_aty128_16;
static void fbcon_aty16_putc(struct vc_data *conp, struct display *p,
int c, int yy, int xx);
static void fbcon_aty16_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count,
int yy, int xx);
#endif
#ifdef FBCON_HAS_CFB24
static struct display_switch fbcon_aty128_24;
static void fbcon_aty24_putc(struct vc_data *conp, struct display *p,
int c, int yy, int xx);
static void fbcon_aty24_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count,
int yy, int xx);
#endif
#ifdef FBCON_HAS_CFB32
static struct display_switch fbcon_aty128_32;
static void fbcon_aty32_putc(struct vc_data *conp, struct display *p,
int c, int yy, int xx);
static void fbcon_aty32_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count,
int yy, int xx);
#endif
static struct fb_ops aty128fb_ops = {
owner: THIS_MODULE,
fb_get_fix: aty128fb_get_fix,
fb_get_var: aty128fb_get_var,
fb_set_var: aty128fb_set_var,
fb_get_cmap: aty128fb_get_cmap,
fb_set_cmap: aty128fb_set_cmap,
fb_pan_display: aty128fb_pan_display,
fb_ioctl: aty128fb_ioctl,
fb_rasterimg: aty128fb_rasterimg,
};
#ifdef CONFIG_PMAC_BACKLIGHT
static int aty128_set_backlight_enable(int on, int level, void* data);
static int aty128_set_backlight_level(int level, void* data);
static struct backlight_controller aty128_backlight_controller = {
aty128_set_backlight_enable,
aty128_set_backlight_level
};
#endif /* CONFIG_PMAC_BACKLIGHT */
/*
* Functions to read from/write to the mmio registers
* - endian conversions may possibly be avoided by
* using the other register aperture. TODO.
*/
static inline u32
_aty_ld_le32(volatile unsigned int regindex,
const struct fb_info_aty128 *info)
{
u32 val;
#if defined(__powerpc__)
asm("lwbrx %0,%1,%2;eieio" : "=r"(val) : "b"(regindex), "r"(info->regbase));
#else
val = readl (info->regbase + regindex);
#endif
return val;
}
static inline void
_aty_st_le32(volatile unsigned int regindex, u32 val,
const struct fb_info_aty128 *info)
{
#if defined(__powerpc__)
asm("stwbrx %0,%1,%2;eieio" : : "r"(val), "b"(regindex),
"r"(info->regbase) : "memory");
#else
writel (val, info->regbase + regindex);
#endif
}
static inline u8
_aty_ld_8(unsigned int regindex, const struct fb_info_aty128 *info)
{
return readb (info->regbase + regindex);
}
static inline void
_aty_st_8(unsigned int regindex, u8 val, const struct fb_info_aty128 *info)
{
writeb (val, info->regbase + regindex);
}
#define aty_ld_le32(regindex) _aty_ld_le32(regindex, info)
#define aty_st_le32(regindex, val) _aty_st_le32(regindex, val, info)
#define aty_ld_8(regindex) _aty_ld_8(regindex, info)
#define aty_st_8(regindex, val) _aty_st_8(regindex, val, info)
/*
* Functions to read from/write to the pll registers
*/
#define aty_ld_pll(pll_index) _aty_ld_pll(pll_index, info)
#define aty_st_pll(pll_index, val) _aty_st_pll(pll_index, val, info)
static u32
_aty_ld_pll(unsigned int pll_index,
const struct fb_info_aty128 *info)
{
aty_st_8(CLOCK_CNTL_INDEX, pll_index & 0x3F);
return aty_ld_le32(CLOCK_CNTL_DATA);
}
static void
_aty_st_pll(unsigned int pll_index, u32 val,
const struct fb_info_aty128 *info)
{
aty_st_8(CLOCK_CNTL_INDEX, (pll_index & 0x3F) | PLL_WR_EN);
aty_st_le32(CLOCK_CNTL_DATA, val);
}
/* return true when the PLL has completed an atomic update */
static int
aty_pll_readupdate(const struct fb_info_aty128 *info)
{
return !(aty_ld_pll(PPLL_REF_DIV) & PPLL_ATOMIC_UPDATE_R);
}
static void
aty_pll_wait_readupdate(const struct fb_info_aty128 *info)
{
unsigned long timeout = jiffies + HZ/100; // should be more than enough
int reset = 1;
while (time_before(jiffies, timeout))
if (aty_pll_readupdate(info)) {
reset = 0;
break;
}
if (reset) /* reset engine?? */
printk(KERN_DEBUG "aty128fb: PLL write timeout!\n");
}
/* tell PLL to update */
static void
aty_pll_writeupdate(const struct fb_info_aty128 *info)
{
aty_pll_wait_readupdate(info);
aty_st_pll(PPLL_REF_DIV,
aty_ld_pll(PPLL_REF_DIV) | PPLL_ATOMIC_UPDATE_W);
}
/* write to the scratch register to test r/w functionality */
static int __init
register_test(const struct fb_info_aty128 *info)
{
u32 val;
int flag = 0;
val = aty_ld_le32(BIOS_0_SCRATCH);
aty_st_le32(BIOS_0_SCRATCH, 0x55555555);
if (aty_ld_le32(BIOS_0_SCRATCH) == 0x55555555) {
aty_st_le32(BIOS_0_SCRATCH, 0xAAAAAAAA);
if (aty_ld_le32(BIOS_0_SCRATCH) == 0xAAAAAAAA)
flag = 1;
}
aty_st_le32(BIOS_0_SCRATCH, val); // restore value
return flag;
}
/*
* Accelerator engine functions
*/
static void
do_wait_for_fifo(u16 entries, struct fb_info_aty128 *info)
{
int i;
for (;;) {
for (i = 0; i < 2000000; i++) {
info->fifo_slots = aty_ld_le32(GUI_STAT) & 0x0fff;
if (info->fifo_slots >= entries)
return;
}
aty128_reset_engine(info);
}
}
static void
wait_for_idle(struct fb_info_aty128 *info)
{
int i;
do_wait_for_fifo(64, info);
for (;;) {
for (i = 0; i < 2000000; i++) {
if (!(aty_ld_le32(GUI_STAT) & (1 << 31))) {
aty128_flush_pixel_cache(info);
info->blitter_may_be_busy = 0;
return;
}
}
aty128_reset_engine(info);
}
}
static void
wait_for_fifo(u16 entries, struct fb_info_aty128 *info)
{
if (info->fifo_slots < entries)
do_wait_for_fifo(64, info);
info->fifo_slots -= entries;
}
static void
aty128_flush_pixel_cache(const struct fb_info_aty128 *info)
{
int i;
u32 tmp;
tmp = aty_ld_le32(PC_NGUI_CTLSTAT);
tmp &= ~(0x00ff);
tmp |= 0x00ff;
aty_st_le32(PC_NGUI_CTLSTAT, tmp);
for (i = 0; i < 2000000; i++)
if (!(aty_ld_le32(PC_NGUI_CTLSTAT) & PC_BUSY))
break;
}
static void
aty128_reset_engine(const struct fb_info_aty128 *info)
{
u32 gen_reset_cntl, clock_cntl_index, mclk_cntl;
aty128_flush_pixel_cache(info);
clock_cntl_index = aty_ld_le32(CLOCK_CNTL_INDEX);
mclk_cntl = aty_ld_pll(MCLK_CNTL);
aty_st_pll(MCLK_CNTL, mclk_cntl | 0x00030000);
gen_reset_cntl = aty_ld_le32(GEN_RESET_CNTL);
aty_st_le32(GEN_RESET_CNTL, gen_reset_cntl | SOFT_RESET_GUI);
aty_ld_le32(GEN_RESET_CNTL);
aty_st_le32(GEN_RESET_CNTL, gen_reset_cntl & ~(SOFT_RESET_GUI));
aty_ld_le32(GEN_RESET_CNTL);
aty_st_pll(MCLK_CNTL, mclk_cntl);
aty_st_le32(CLOCK_CNTL_INDEX, clock_cntl_index);
aty_st_le32(GEN_RESET_CNTL, gen_reset_cntl);
/* use old pio mode */
aty_st_le32(PM4_BUFFER_CNTL, PM4_BUFFER_CNTL_NONPM4);
DBG("engine reset");
}
static void
aty128_init_engine(const struct aty128fb_par *par,
struct fb_info_aty128 *info)
{
u32 pitch_value;
wait_for_idle(info);
/* 3D scaler not spoken here */
wait_for_fifo(1, info);
aty_st_le32(SCALE_3D_CNTL, 0x00000000);
aty128_reset_engine(info);
pitch_value = par->crtc.pitch;
if (par->crtc.bpp == 24) {
pitch_value = pitch_value * 3;
}
wait_for_fifo(4, info);
/* setup engine offset registers */
aty_st_le32(DEFAULT_OFFSET, 0x00000000);
/* setup engine pitch registers */
aty_st_le32(DEFAULT_PITCH, pitch_value);
/* set the default scissor register to max dimensions */
aty_st_le32(DEFAULT_SC_BOTTOM_RIGHT, (0x1FFF << 16) | 0x1FFF);
/* set the drawing controls registers */
aty_st_le32(DP_GUI_MASTER_CNTL,
GMC_SRC_PITCH_OFFSET_DEFAULT |
GMC_DST_PITCH_OFFSET_DEFAULT |
GMC_SRC_CLIP_DEFAULT |
GMC_DST_CLIP_DEFAULT |
GMC_BRUSH_SOLIDCOLOR |
(depth_to_dst(par->crtc.depth) << 8) |
GMC_SRC_DSTCOLOR |
GMC_BYTE_ORDER_MSB_TO_LSB |
GMC_DP_CONVERSION_TEMP_6500 |
ROP3_PATCOPY |
GMC_DP_SRC_RECT |
GMC_3D_FCN_EN_CLR |
GMC_DST_CLR_CMP_FCN_CLEAR |
GMC_AUX_CLIP_CLEAR |
GMC_WRITE_MASK_SET);
wait_for_fifo(8, info);
/* clear the line drawing registers */
aty_st_le32(DST_BRES_ERR, 0);
aty_st_le32(DST_BRES_INC, 0);
aty_st_le32(DST_BRES_DEC, 0);
/* set brush color registers */
aty_st_le32(DP_BRUSH_FRGD_CLR, 0xFFFFFFFF); /* white */
aty_st_le32(DP_BRUSH_BKGD_CLR, 0x00000000); /* black */
/* set source color registers */
aty_st_le32(DP_SRC_FRGD_CLR, 0xFFFFFFFF); /* white */
aty_st_le32(DP_SRC_BKGD_CLR, 0x00000000); /* black */
/* default write mask */
aty_st_le32(DP_WRITE_MASK, 0xFFFFFFFF);
/* Wait for all the writes to be completed before returning */
wait_for_idle(info);
}
/* convert depth values to their register representation */
static u32
depth_to_dst(u32 depth)
{
if (depth <= 8)
return DST_8BPP;
else if (depth <= 15)
return DST_15BPP;
else if (depth == 16)
return DST_16BPP;
else if (depth <= 24)
return DST_24BPP;
else if (depth <= 32)
return DST_32BPP;
return -EINVAL;
}
/*
* CRTC programming
*/
/* Program the CRTC registers */
static void
aty128_set_crtc(const struct aty128_crtc *crtc,
const struct fb_info_aty128 *info)
{
aty_st_le32(CRTC_GEN_CNTL, crtc->gen_cntl);
aty_st_le32(CRTC_H_TOTAL_DISP, crtc->h_total);
aty_st_le32(CRTC_H_SYNC_STRT_WID, crtc->h_sync_strt_wid);
aty_st_le32(CRTC_V_TOTAL_DISP, crtc->v_total);
aty_st_le32(CRTC_V_SYNC_STRT_WID, crtc->v_sync_strt_wid);
aty_st_le32(CRTC_PITCH, crtc->pitch);
aty_st_le32(CRTC_OFFSET, crtc->offset);
aty_st_le32(CRTC_OFFSET_CNTL, crtc->offset_cntl);
/* Disable ATOMIC updating. Is this the right place? */
aty_st_pll(PPLL_CNTL, aty_ld_pll(PPLL_CNTL) & ~(0x00030000));
}
static int
aty128_var_to_crtc(const struct fb_var_screeninfo *var,
struct aty128_crtc *crtc,
const struct fb_info_aty128 *info)
{
u32 xres, yres, vxres, vyres, xoffset, yoffset, bpp, dst;
u32 left, right, upper, lower, hslen, vslen, sync, vmode;
u32 h_total, h_disp, h_sync_strt, h_sync_wid, h_sync_pol;
u32 v_total, v_disp, v_sync_strt, v_sync_wid, v_sync_pol, c_sync;
u32 depth, bytpp;
u8 hsync_strt_pix[5] = { 0, 0x12, 9, 6, 5 };
u8 mode_bytpp[7] = { 0, 0, 1, 2, 2, 3, 4 };
/* input */
xres = var->xres;
yres = var->yres;
vxres = var->xres_virtual;
vyres = var->yres_virtual;
xoffset = var->xoffset;
yoffset = var->yoffset;
bpp = var->bits_per_pixel;
left = var->left_margin;
right = var->right_margin;
upper = var->upper_margin;
lower = var->lower_margin;
hslen = var->hsync_len;
vslen = var->vsync_len;
sync = var->sync;
vmode = var->vmode;
if (bpp != 16)
depth = bpp;
else
depth = (var->green.length == 6) ? 16 : 15;
/* check for mode eligibility
* accept only non interlaced modes */
if ((vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED)
return -EINVAL;
/* convert (and round up) and validate */
xres = (xres + 7) & ~7;
xoffset = (xoffset + 7) & ~7;
if (vxres < xres + xoffset)
vxres = xres + xoffset;
if (vyres < yres + yoffset)
vyres = yres + yoffset;
/* convert depth into ATI register depth */
dst = depth_to_dst(depth);
if (dst == -EINVAL) {
printk(KERN_ERR "aty128fb: Invalid depth or RGBA\n");
return -EINVAL;
}
/* convert register depth to bytes per pixel */
bytpp = mode_bytpp[dst];
/* make sure there is enough video ram for the mode */
if ((u32)(vxres * vyres * bytpp) > info->vram_size) {
printk(KERN_ERR "aty128fb: Not enough memory for mode\n");
return -EINVAL;
}
h_disp = (xres >> 3) - 1;
h_total = (((xres + right + hslen + left) >> 3) - 1) & 0xFFFFL;
v_disp = yres - 1;
v_total = (yres + upper + vslen + lower - 1) & 0xFFFFL;
/* check to make sure h_total and v_total are in range */
if (((h_total >> 3) - 1) > 0x1ff || (v_total - 1) > 0x7FF) {
printk(KERN_ERR "aty128fb: invalid width ranges\n");
return -EINVAL;
}
h_sync_wid = (hslen + 7) >> 3;
if (h_sync_wid == 0)
h_sync_wid = 1;
else if (h_sync_wid > 0x3f) /* 0x3f = max hwidth */
h_sync_wid = 0x3f;
h_sync_strt = h_disp + (right >> 3);
v_sync_wid = vslen;
if (v_sync_wid == 0)
v_sync_wid = 1;
else if (v_sync_wid > 0x1f) /* 0x1f = max vwidth */
v_sync_wid = 0x1f;
v_sync_strt = v_disp + lower;
h_sync_pol = sync & FB_SYNC_HOR_HIGH_ACT ? 0 : 1;
v_sync_pol = sync & FB_SYNC_VERT_HIGH_ACT ? 0 : 1;
c_sync = sync & FB_SYNC_COMP_HIGH_ACT ? (1 << 4) : 0;
crtc->gen_cntl = 0x3000000L | c_sync | (dst << 8);
crtc->h_total = h_total | (h_disp << 16);
crtc->v_total = v_total | (v_disp << 16);
crtc->h_sync_strt_wid = hsync_strt_pix[bytpp] | (h_sync_strt << 3) |
(h_sync_wid << 16) | (h_sync_pol << 23);
crtc->v_sync_strt_wid = v_sync_strt | (v_sync_wid << 16) |
(v_sync_pol << 23);
crtc->pitch = vxres >> 3;
crtc->offset = 0;
if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW)
crtc->offset_cntl = 0x00010000;
else
crtc->offset_cntl = 0;
crtc->vxres = vxres;
crtc->vyres = vyres;
crtc->xoffset = xoffset;
crtc->yoffset = yoffset;
crtc->depth = depth;
crtc->bpp = bpp;
return 0;
}
static int
aty128_pix_width_to_var(int pix_width, struct fb_var_screeninfo *var)
{
/* fill in pixel info */
switch (pix_width) {
case CRTC_PIX_WIDTH_8BPP:
var->bits_per_pixel = 8;
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 0;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
var->transp.offset = 0;
var->transp.length = 0;
break;
case CRTC_PIX_WIDTH_15BPP:
var->bits_per_pixel = 16;
var->red.offset = 10;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 5;
var->blue.offset = 0;
var->blue.length = 5;
var->transp.offset = 0;
var->transp.length = 0;
break;
case CRTC_PIX_WIDTH_16BPP:
var->bits_per_pixel = 16;
var->red.offset = 11;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 6;
var->blue.offset = 0;
var->blue.length = 5;
var->transp.offset = 0;
var->transp.length = 0;
break;
case CRTC_PIX_WIDTH_24BPP:
var->bits_per_pixel = 24;
var->red.offset = 16;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
var->transp.offset = 0;
var->transp.length = 0;
break;
case CRTC_PIX_WIDTH_32BPP:
var->bits_per_pixel = 32;
var->red.offset = 16;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
var->transp.offset = 24;
var->transp.length = 8;
break;
default:
printk(KERN_ERR "aty128fb: Invalid pixel width\n");
return -EINVAL;
}
return 0;
}
static int
aty128_crtc_to_var(const struct aty128_crtc *crtc,
struct fb_var_screeninfo *var)
{
u32 xres, yres, left, right, upper, lower, hslen, vslen, sync;
u32 h_total, h_disp, h_sync_strt, h_sync_dly, h_sync_wid, h_sync_pol;
u32 v_total, v_disp, v_sync_strt, v_sync_wid, v_sync_pol, c_sync;
u32 pix_width;
/* fun with masking */
h_total = crtc->h_total & 0x1ff;
h_disp = (crtc->h_total >> 16) & 0xff;
h_sync_strt = (crtc->h_sync_strt_wid >> 3) & 0x1ff;
h_sync_dly = crtc->h_sync_strt_wid & 0x7;
h_sync_wid = (crtc->h_sync_strt_wid >> 16) & 0x3f;
h_sync_pol = (crtc->h_sync_strt_wid >> 23) & 0x1;
v_total = crtc->v_total & 0x7ff;
v_disp = (crtc->v_total >> 16) & 0x7ff;
v_sync_strt = crtc->v_sync_strt_wid & 0x7ff;
v_sync_wid = (crtc->v_sync_strt_wid >> 16) & 0x1f;
v_sync_pol = (crtc->v_sync_strt_wid >> 23) & 0x1;
c_sync = crtc->gen_cntl & CRTC_CSYNC_EN ? 1 : 0;
pix_width = crtc->gen_cntl & CRTC_PIX_WIDTH_MASK;
/* do conversions */
xres = (h_disp + 1) << 3;
yres = v_disp + 1;
left = ((h_total - h_sync_strt - h_sync_wid) << 3) - h_sync_dly;
right = ((h_sync_strt - h_disp) << 3) + h_sync_dly;
hslen = h_sync_wid << 3;
upper = v_total - v_sync_strt - v_sync_wid;
lower = v_sync_strt - v_disp;
vslen = v_sync_wid;
sync = (h_sync_pol ? 0 : FB_SYNC_HOR_HIGH_ACT) |
(v_sync_pol ? 0 : FB_SYNC_VERT_HIGH_ACT) |
(c_sync ? FB_SYNC_COMP_HIGH_ACT : 0);
aty128_pix_width_to_var(pix_width, var);
var->xres = xres;
var->yres = yres;
var->xres_virtual = crtc->vxres;
var->yres_virtual = crtc->vyres;
var->xoffset = crtc->xoffset;
var->yoffset = crtc->yoffset;
var->left_margin = left;
var->right_margin = right;
var->upper_margin = upper;
var->lower_margin = lower;
var->hsync_len = hslen;
var->vsync_len = vslen;
var->sync = sync;
var->vmode = FB_VMODE_NONINTERLACED;
return 0;
}
static void
aty128_set_crt_enable(struct fb_info_aty128 *info, int on)
{
if (on) {
aty_st_le32(CRTC_EXT_CNTL, aty_ld_le32(CRTC_EXT_CNTL) | CRT_CRTC_ON);
aty_st_le32(DAC_CNTL, (aty_ld_le32(DAC_CNTL) | DAC_PALETTE2_SNOOP_EN));
} else
aty_st_le32(CRTC_EXT_CNTL, aty_ld_le32(CRTC_EXT_CNTL) & ~CRT_CRTC_ON);
}
static void
aty128_set_lcd_enable(struct fb_info_aty128 *info, int on)
{
u32 reg;
if (on) {
reg = aty_ld_le32(LVDS_GEN_CNTL);
reg |= LVDS_ON | LVDS_EN | LVDS_BLON | LVDS_DIGION;
reg &= ~LVDS_DISPLAY_DIS;
aty_st_le32(LVDS_GEN_CNTL, reg);
#ifdef CONFIG_PMAC_BACKLIGHT
aty128_set_backlight_enable(get_backlight_enable(), get_backlight_level(), info);
#endif
} else {
#ifdef CONFIG_PMAC_BACKLIGHT
aty128_set_backlight_enable(0, 0, info);
#endif
reg = aty_ld_le32(LVDS_GEN_CNTL);
reg |= LVDS_DISPLAY_DIS;
aty_st_le32(LVDS_GEN_CNTL, reg);
mdelay(100);
reg &= ~(LVDS_ON /*| LVDS_EN*/);
aty_st_le32(LVDS_GEN_CNTL, reg);
}
}
static void
aty128_set_pll(struct aty128_pll *pll, const struct fb_info_aty128 *info)
{
u32 div3;
unsigned char post_conv[] = /* register values for post dividers */
{ 2, 0, 1, 4, 2, 2, 6, 2, 3, 2, 2, 2, 7 };
/* select PPLL_DIV_3 */
aty_st_le32(CLOCK_CNTL_INDEX, aty_ld_le32(CLOCK_CNTL_INDEX) | (3 << 8));
/* reset PLL */
aty_st_pll(PPLL_CNTL,
aty_ld_pll(PPLL_CNTL) | PPLL_RESET | PPLL_ATOMIC_UPDATE_EN);
/* write the reference divider */
aty_pll_wait_readupdate(info);
aty_st_pll(PPLL_REF_DIV, info->constants.ref_divider & 0x3ff);
aty_pll_writeupdate(info);
div3 = aty_ld_pll(PPLL_DIV_3);
div3 &= ~PPLL_FB3_DIV_MASK;
div3 |= pll->feedback_divider;
div3 &= ~PPLL_POST3_DIV_MASK;
div3 |= post_conv[pll->post_divider] << 16;
/* write feedback and post dividers */
aty_pll_wait_readupdate(info);
aty_st_pll(PPLL_DIV_3, div3);
aty_pll_writeupdate(info);
aty_pll_wait_readupdate(info);
aty_st_pll(HTOTAL_CNTL, 0); /* no horiz crtc adjustment */
aty_pll_writeupdate(info);
/* clear the reset, just in case */
aty_st_pll(PPLL_CNTL, aty_ld_pll(PPLL_CNTL) & ~PPLL_RESET);
#if 0
if (info->chip_gen == rage_M3) {
/* XXX energy saving, disable VCLK during blanking */
aty_pll_wait_readupdate(info);
aty_st_pll(VCLK_ECP_CNTL, aty_ld_pll(VCLK_ECP_CNTL) | 0xc0);
aty_pll_writeupdate(info);
/* Set PM clocks */
aty_pll_wait_readupdate(info);
aty_st_pll(XCLK_CNTL, aty_ld_pll(XCLK_CNTL) | 0x00330000);
aty_pll_writeupdate(info);
aty_pll_wait_readupdate(info);
aty_st_pll(MCLK_CNTL, aty_ld_pll(MCLK_CNTL) | 0x00000700);
aty_pll_writeupdate(info);
}
#endif
}
static int
aty128_var_to_pll(u32 period_in_ps, struct aty128_pll *pll,
const struct fb_info_aty128 *info)
{
const struct aty128_constants c = info->constants;
unsigned char post_dividers[] = {1,2,4,8,3,6,12};
u32 output_freq;
u32 vclk; /* in .01 MHz */
int i;
u32 n, d;
vclk = 100000000 / period_in_ps; /* convert units to 10 kHz */
/* adjust pixel clock if necessary */
if (vclk > c.ppll_max)
vclk = c.ppll_max;
if (vclk * 12 < c.ppll_min)
vclk = c.ppll_min/12;
/* now, find an acceptable divider */
for (i = 0; i < sizeof(post_dividers); i++) {
output_freq = post_dividers[i] * vclk;
if (output_freq >= c.ppll_min && output_freq <= c.ppll_max)
break;
}
/* calculate feedback divider */
n = c.ref_divider * output_freq;
d = c.dotclock;
pll->post_divider = post_dividers[i];
pll->feedback_divider = round_div(n, d);
pll->vclk = vclk;
DBG("post %d feedback %d vlck %d output %d ref_divider %d "
"vclk_per: %d\n", pll->post_divider,
pll->feedback_divider, vclk, output_freq,
c.ref_divider, period_in_ps);
return 0;
}
static int
aty128_pll_to_var(const struct aty128_pll *pll, struct fb_var_screeninfo *var,
const struct fb_info_aty128 *info)
{
var->pixclock = 100000000 / pll->vclk;
return 0;
}
static void
aty128_set_fifo(const struct aty128_ddafifo *dsp,
const struct fb_info_aty128 *info)
{
aty_st_le32(DDA_CONFIG, dsp->dda_config);
aty_st_le32(DDA_ON_OFF, dsp->dda_on_off);
}
static int
aty128_ddafifo(struct aty128_ddafifo *dsp,
const struct aty128_pll *pll,
u32 depth,
const struct fb_info_aty128 *info)
{
const struct aty128_meminfo *m = info->mem;
u32 xclk = info->constants.xclk;
u32 fifo_width = info->constants.fifo_width;
u32 fifo_depth = info->constants.fifo_depth;
s32 x, b, p, ron, roff;
u32 n, d, bpp;
/* round up to multiple of 8 */
bpp = (depth+7) & ~7;
n = xclk * fifo_width;
d = pll->vclk * bpp;
x = round_div(n, d);
ron = 4 * m->MB +
3 * ((m->Trcd - 2 > 0) ? m->Trcd - 2 : 0) +
2 * m->Trp +
m->Twr +
m->CL +
m->Tr2w +
x;
DBG("x %x\n", x);
b = 0;
while (x) {
x >>= 1;
b++;
}
p = b + 1;
ron <<= (11 - p);
n <<= (11 - p);
x = round_div(n, d);
roff = x * (fifo_depth - 4);
if ((ron + m->Rloop) >= roff) {
printk(KERN_ERR "aty128fb: Mode out of range!\n");
return -EINVAL;
}
DBG("p: %x rloop: %x x: %x ron: %x roff: %x\n",
p, m->Rloop, x, ron, roff);
dsp->dda_config = p << 16 | m->Rloop << 20 | x;
dsp->dda_on_off = ron << 16 | roff;
return 0;
}
/*
* This actually sets the video mode.
*/
static void
aty128_set_par(struct aty128fb_par *par,
struct fb_info_aty128 *info)
{
u32 config;
info->current_par = *par;
if (info->blitter_may_be_busy)
wait_for_idle(info);
/* clear all registers that may interfere with mode setting */
aty_st_le32(OVR_CLR, 0);
aty_st_le32(OVR_WID_LEFT_RIGHT, 0);
aty_st_le32(OVR_WID_TOP_BOTTOM, 0);
aty_st_le32(OV0_SCALE_CNTL, 0);
aty_st_le32(MPP_TB_CONFIG, 0);
aty_st_le32(MPP_GP_CONFIG, 0);
aty_st_le32(SUBPIC_CNTL, 0);
aty_st_le32(VIPH_CONTROL, 0);
aty_st_le32(I2C_CNTL_1, 0); /* turn off i2c */
aty_st_le32(GEN_INT_CNTL, 0); /* turn off interrupts */
aty_st_le32(CAP0_TRIG_CNTL, 0);
aty_st_le32(CAP1_TRIG_CNTL, 0);
aty_st_8(CRTC_EXT_CNTL + 1, 4); /* turn video off */
aty128_set_crtc(&par->crtc, info);
aty128_set_pll(&par->pll, info);
aty128_set_fifo(&par->fifo_reg, info);
config = aty_ld_le32(CONFIG_CNTL) & ~3;
#if defined(__BIG_ENDIAN)
if (par->crtc.bpp == 32)
config |= 2; /* make aperture do 32 bit swapping */
else if (par->crtc.bpp == 16)
config |= 1; /* make aperture do 16 bit swapping */
#endif
aty_st_le32(CONFIG_CNTL, config);
aty_st_8(CRTC_EXT_CNTL + 1, 0); /* turn the video back on */
#ifdef CONFIG_PMAC_PBOOK
if (info->chip_gen == rage_M3) {
aty128_set_crt_enable(info, info->crt_on);
aty128_set_lcd_enable(info, info->lcd_on);
}
#endif
if (par->accel_flags & FB_ACCELF_TEXT)
aty128_init_engine(par, info);
#ifdef CONFIG_FB_COMPAT_XPMAC
if (!console_fb_info || console_fb_info == &info->fb_info) {
struct fb_var_screeninfo var;
int cmode, vmode;
display_info.height = ((par->crtc.v_total >> 16) & 0x7ff) + 1;
display_info.width = (((par->crtc.h_total >> 16) & 0xff) + 1) << 3;
display_info.depth = par->crtc.bpp;
display_info.pitch = (par->crtc.vxres * par->crtc.bpp) >> 3;
aty128_encode_var(&var, par, info);
if (mac_var_to_vmode(&var, &vmode, &cmode))
display_info.mode = 0;
else
display_info.mode = vmode;
strcpy(display_info.name, aty128fb_name);
display_info.fb_address = info->frame_buffer_phys;
display_info.cmap_adr_address = 0;
display_info.cmap_data_address = 0;
display_info.disp_reg_address = info->regbase_phys;
}
#endif /* CONFIG_FB_COMPAT_XPMAC */
#if defined(CONFIG_BOOTX_TEXT)
btext_update_display(info->frame_buffer_phys,
(((par->crtc.h_total>>16) & 0xff)+1)*8,
((par->crtc.v_total>>16) & 0x7ff)+1,
par->crtc.bpp,
par->crtc.vxres*par->crtc.bpp/8);
#endif /* CONFIG_BOOTX_TEXT */
}
/*
* encode/decode the User Defined Part of the Display
*/
static int
aty128_decode_var(struct fb_var_screeninfo *var, struct aty128fb_par *par,
const struct fb_info_aty128 *info)
{
int err;
if ((err = aty128_var_to_crtc(var, &par->crtc, info)))
return err;
if ((err = aty128_var_to_pll(var->pixclock, &par->pll, info)))
return err;
if ((err = aty128_ddafifo(&par->fifo_reg, &par->pll, par->crtc.depth, info)))
return err;
if (var->accel_flags & FB_ACCELF_TEXT)
par->accel_flags = FB_ACCELF_TEXT;
else
par->accel_flags = 0;
return 0;
}
static int
aty128_encode_var(struct fb_var_screeninfo *var,
const struct aty128fb_par *par,
const struct fb_info_aty128 *info)
{
int err;
if ((err = aty128_crtc_to_var(&par->crtc, var)))
return err;
if ((err = aty128_pll_to_var(&par->pll, var, info)))
return err;
var->red.msb_right = 0;
var->green.msb_right = 0;
var->blue.msb_right = 0;
var->transp.msb_right = 0;
var->nonstd = 0;
var->activate = 0;
var->height = -1;
var->width = -1;
var->accel_flags = par->accel_flags;
return 0;
}
/*
* Get the User Defined Part of the Display
*/
static int
aty128fb_get_var(struct fb_var_screeninfo *var, int con, struct fb_info *fb)
{
const struct fb_info_aty128 *info = (struct fb_info_aty128 *)fb;
if (con == -1)
aty128_encode_var(var, &info->default_par, info);
else
*var = fb_display[con].var;
return 0;
}
/*
* Set the User Defined Part of the Display
*/
static int
aty128fb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *fb)
{
struct fb_info_aty128 *info = (struct fb_info_aty128 *)fb;
struct aty128fb_par par;
struct display *display;
int oldxres, oldyres, oldvxres, oldvyres, oldbpp, oldgreen, oldaccel;
int accel, err;
display = (con >= 0) ? &fb_display[con] : fb->disp;
/* basic (in)sanity checks */
if (!var->xres)
var->xres = 1;
if (!var->yres)
var->yres = 1;
if (var->xres > var->xres_virtual)
var->xres_virtual = var->xres;
if (var->yres > var->yres_virtual)
var->yres_virtual = var->yres;
switch (var->bits_per_pixel) {
case 0 ... 8:
var->bits_per_pixel = 8;
break;
case 9 ... 16:
var->bits_per_pixel = 16;
break;
case 17 ... 24:
var->bits_per_pixel = 24;
break;
case 25 ... 32:
var->bits_per_pixel = 32;
break;
default:
return -EINVAL;
}
if ((err = aty128_decode_var(var, &par, info)))
return err;
aty128_encode_var(var, &par, info);
if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_TEST)
return 0;
oldxres = display->var.xres;
oldyres = display->var.yres;
oldvxres = display->var.xres_virtual;
oldvyres = display->var.yres_virtual;
oldbpp = display->var.bits_per_pixel;
oldgreen = display->var.green.length;
oldaccel = display->var.accel_flags;
display->var = *var;
if (oldxres != var->xres || oldyres != var->yres ||
oldvxres != var->xres_virtual || oldvyres != var->yres_virtual ||
oldgreen != var->green.length || oldbpp != var->bits_per_pixel ||
oldaccel != var->accel_flags) {
struct fb_fix_screeninfo fix;
aty128_encode_fix(&fix, &par, info);
display->screen_base = info->frame_buffer;
display->visual = fix.visual;
display->type = fix.type;
display->type_aux = fix.type_aux;
display->ypanstep = fix.ypanstep;
display->ywrapstep = fix.ywrapstep;
display->line_length = fix.line_length;
display->can_soft_blank = 1;
display->inverse = 0;
accel = var->accel_flags & FB_ACCELF_TEXT;
aty128_set_dispsw(display, info, par.crtc.bpp, accel);
if (accel)
display->scrollmode = SCROLL_YNOMOVE;
else
display->scrollmode = SCROLL_YREDRAW;
if (info->fb_info.changevar)
(*info->fb_info.changevar)(con);
}
if (!info->fb_info.display_fg || info->fb_info.display_fg->vc_num == con)
aty128_set_par(&par, info);
if (oldbpp != var->bits_per_pixel || oldgreen != var->green.length) {
if ((err = fb_alloc_cmap(&display->cmap, 0, 0)))
return err;
do_install_cmap(con, &info->fb_info);
}
return 0;
}
static void
aty128_set_dispsw(struct display *disp,
struct fb_info_aty128 *info, int bpp, int accel)
{
switch (bpp) {
#ifdef FBCON_HAS_CFB8
case 8:
disp->dispsw = accel ? &fbcon_aty128_8 : &fbcon_cfb8;
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
disp->dispsw = accel ? &fbcon_aty128_16 : &fbcon_cfb16;
disp->dispsw_data = info->fbcon_cmap.cfb16;
break;
#endif
#ifdef FBCON_HAS_CFB24
case 24:
disp->dispsw = accel ? &fbcon_aty128_24 : &fbcon_cfb24;
disp->dispsw_data = info->fbcon_cmap.cfb24;
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
disp->dispsw = accel ? &fbcon_aty128_32 : &fbcon_cfb32;
disp->dispsw_data = info->fbcon_cmap.cfb32;
break;
#endif
default:
disp->dispsw = &fbcon_dummy;
}
}
static void
aty128_encode_fix(struct fb_fix_screeninfo *fix,
struct aty128fb_par *par,
const struct fb_info_aty128 *info)
{
memset(fix, 0, sizeof(struct fb_fix_screeninfo));
strcpy(fix->id, aty128fb_name);
fix->smem_start = (unsigned long)info->frame_buffer_phys;
fix->mmio_start = (unsigned long)info->regbase_phys;
fix->smem_len = info->vram_size;
fix->mmio_len = 0x1fff;
fix->type = FB_TYPE_PACKED_PIXELS;
fix->type_aux = 0;
fix->line_length = (par->crtc.vxres * par->crtc.bpp) >> 3;
fix->visual = par->crtc.bpp == 8 ? FB_VISUAL_PSEUDOCOLOR
: FB_VISUAL_DIRECTCOLOR;
fix->ywrapstep = 0;
fix->xpanstep = 8;
fix->ypanstep = 1;
fix->accel = FB_ACCEL_ATI_RAGE128;
return;
}
/*
* Get the Fixed Part of the Display
*/
static int
aty128fb_get_fix(struct fb_fix_screeninfo *fix, int con, struct fb_info *fb)
{
const struct fb_info_aty128 *info = (struct fb_info_aty128 *)fb;
struct aty128fb_par par;
if (con == -1)
par = info->default_par;
else
aty128_decode_var(&fb_display[con].var, &par, info);
aty128_encode_fix(fix, &par, info);
return 0;
}
/*
* Pan or Wrap the Display
*/
static int
aty128fb_pan_display(struct fb_var_screeninfo *var, int con,
struct fb_info *fb)
{
struct fb_info_aty128 *info = (struct fb_info_aty128 *)fb;
struct aty128fb_par *par = &info->current_par;
u32 xoffset, yoffset;
u32 offset;
u32 xres, yres;
xres = (((par->crtc.h_total >> 16) & 0xff) + 1) << 3;
yres = ((par->crtc.v_total >> 16) & 0x7ff) + 1;
xoffset = (var->xoffset +7) & ~7;
yoffset = var->yoffset;
if (xoffset+xres > par->crtc.vxres || yoffset+yres > par->crtc.vyres)
return -EINVAL;
par->crtc.xoffset = xoffset;
par->crtc.yoffset = yoffset;
offset = ((yoffset * par->crtc.vxres + xoffset)*(par->crtc.bpp >> 3)) & ~7;
if (par->crtc.bpp == 24)
offset += 8 * (offset % 3); /* Must be multiple of 8 and 3 */
aty_st_le32(CRTC_OFFSET, offset);
return 0;
}
/*
* Get the Colormap
*/
static int
aty128fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)info;
struct display *disp = (con < 0) ? info->disp : (fb_display + con);
if (con == fb->currcon) /* current console? */
return fb_get_cmap(cmap, kspc, aty128_getcolreg, info);
else if (disp->cmap.len) /* non default colormap? */
fb_copy_cmap(&disp->cmap, cmap, kspc ? 0 : 2);
else
fb_copy_cmap(fb_default_cmap((disp->var.bits_per_pixel==8) ? 256 : 32),
cmap, kspc ? 0 : 2);
return 0;
}
/*
* Set the Colormap
*/
static int
aty128fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)info;
struct display *disp = (con < 0) ? info->disp : (fb_display + con);
unsigned int cmap_len = (disp->var.bits_per_pixel==8) ? 256 : 32;
if (disp->cmap.len != cmap_len) {
int err = fb_alloc_cmap(&disp->cmap, cmap_len, 0);
if (!disp->cmap.len) { /* no colormap allocated? */
int size = (disp->var.bits_per_pixel <= 8) ? 256 : 32;
if ((err = fb_alloc_cmap(&disp->cmap, size, 0)))
return err;
}
if (err) return err;
}
if (con == fb->currcon) /* current console? */
return fb_set_cmap(cmap, kspc, aty128_setcolreg, info);
else
fb_copy_cmap(cmap, &disp->cmap, kspc ? 0 : 1);
return 0;
}
/*
* Helper function to store a single palette register
*/
static __inline__ void
aty128_st_pal(u_int regno, u_int red, u_int green, u_int blue,
struct fb_info_aty128 *info)
{
/* Note: For now, on M3, we set palette on both heads, which may
* be useless. Can someone with a M3 check this ?
*
* This code would still be useful if using the second CRTC to
* do mirroring
*/
if (info->chip_gen == rage_M3) {
#if 0
aty_st_le32(DAC_CNTL, aty_ld_le32(DAC_CNTL) | DAC_PALETTE_ACCESS_CNTL);
aty_st_8(PALETTE_INDEX, regno);
aty_st_le32(PALETTE_DATA, (red<<16)|(green<<8)|blue);
#endif
aty_st_le32(DAC_CNTL, aty_ld_le32(DAC_CNTL) & ~DAC_PALETTE_ACCESS_CNTL);
}
aty_st_8(PALETTE_INDEX, regno);
aty_st_le32(PALETTE_DATA, (red<<16)|(green<<8)|blue);
}
static int
aty128fb_rasterimg(struct fb_info *info, int start)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)info;
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
return 0;
}
int __init
aty128fb_setup(char *options)
{
char *this_opt;
if (!options || !*options)
return 0;
while ((this_opt = strsep(&options, ",")) != 0) {
if (!strncmp(this_opt, "font:", 5)) {
char *p;
int i;
p = this_opt +5;
for (i = 0; i < sizeof(fontname) - 1; i++)
if (!*p || *p == ' ' || *p == ',')
break;
memcpy(fontname, this_opt + 5, i);
fontname[i] = 0;
} else if (!strncmp(this_opt, "noaccel", 7)) {
noaccel = 1;
#ifdef CONFIG_PMAC_PBOOK
} else if (!strncmp(this_opt, "lcd:", 4)) {
default_lcd_on = simple_strtoul(this_opt+4, NULL, 0);
} else if (!strncmp(this_opt, "crt:", 4)) {
default_crt_on = simple_strtoul(this_opt+4, NULL, 0);
#endif
}
#ifdef CONFIG_MTRR
else if(!strncmp(this_opt, "nomtrr", 6)) {
mtrr = 0;
}
#endif
#ifdef CONFIG_PPC
/* vmode and cmode depreciated */
else if (!strncmp(this_opt, "vmode:", 6)) {
unsigned int vmode = simple_strtoul(this_opt+6, NULL, 0);
if (vmode > 0 && vmode <= VMODE_MAX)
default_vmode = vmode;
} else if (!strncmp(this_opt, "cmode:", 6)) {
unsigned int cmode = simple_strtoul(this_opt+6, NULL, 0);
switch (cmode) {
case 0:
case 8:
default_cmode = CMODE_8;
break;
case 15:
case 16:
default_cmode = CMODE_16;
break;
case 24:
case 32:
default_cmode = CMODE_32;
break;
}
}
#endif /* CONFIG_PPC */
else
mode_option = this_opt;
}
return 0;
}
/*
* Initialisation
*/
static int __init
aty128_init(struct fb_info_aty128 *info, const char *name)
{
struct fb_var_screeninfo var;
u32 dac;
int j, k;
u8 chip_rev;
const struct aty128_chip_info *aci = &aty128_pci_probe_list[0];
char *video_card = "Rage128";
if (!info->vram_size) /* may have already been probed */
info->vram_size = aty_ld_le32(CONFIG_MEMSIZE) & 0x03FFFFFF;
/* Get the chip revision */
chip_rev = (aty_ld_le32(CONFIG_CNTL) >> 16) & 0x1F;
/* put a name with the face */
while (aci->name && info->pdev->device != aci->device) { aci++; }
video_card = (char *)aci->name;
info->chip_gen = aci->chip_gen;
printk(KERN_INFO "aty128fb: %s [chip rev 0x%x] ", video_card, chip_rev);
if (info->vram_size % (1024 * 1024) == 0)
printk("%dM %s\n", info->vram_size / (1024*1024), info->mem->name);
else
printk("%dk %s\n", info->vram_size / 1024, info->mem->name);
/* fill in info */
strcpy(info->fb_info.modename, aty128fb_name);
info->fb_info.node = -1;
info->fb_info.fbops = &aty128fb_ops;
info->fb_info.disp = &info->disp;
strcpy(info->fb_info.fontname, fontname);
info->fb_info.changevar = NULL;
info->fb_info.switch_con = &aty128fbcon_switch;
info->fb_info.updatevar = NULL;
info->fb_info.blank = &aty128fbcon_blank;
info->fb_info.flags = FBINFO_FLAG_DEFAULT;
#ifdef CONFIG_PMAC_PBOOK
info->lcd_on = default_lcd_on;
info->crt_on = default_crt_on;
#endif
var = default_var;
#ifdef CONFIG_PPC
if (_machine == _MACH_Pmac) {
if (mode_option) {
if (!mac_find_mode(&var, &info->fb_info, mode_option, 8))
var = default_var;
} else {
if (default_vmode <= 0 || default_vmode > VMODE_MAX)
default_vmode = VMODE_1024_768_60;
/* iMacs need that resolution
* PowerMac2,1 first r128 iMacs
* PowerMac2,2 summer 2000 iMacs
* PowerMac4,1 january 2001 iMacs "flower power"
*/
if (machine_is_compatible("PowerMac2,1") ||
machine_is_compatible("PowerMac2,2") ||
machine_is_compatible("PowerMac4,1"))
default_vmode = VMODE_1024_768_75;
/* iBook SE */
if (machine_is_compatible("PowerBook2,2"))
default_vmode = VMODE_800_600_60;
/* PowerBook Firewire (Pismo), iBook Dual USB */
if (machine_is_compatible("PowerBook3,1") ||
machine_is_compatible("PowerBook4,1"))
default_vmode = VMODE_1024_768_60;
/* PowerBook Titanium */
if (machine_is_compatible("PowerBook3,2"))
default_vmode = VMODE_1152_768_60;
if (default_cmode < CMODE_8 || default_cmode > CMODE_32)
default_cmode = CMODE_8;
if (mac_vmode_to_var(default_vmode, default_cmode, &var))
var = default_var;
}
} else
#endif /* CONFIG_PPC */
{
if (fb_find_mode(&var, &info->fb_info, mode_option, NULL, 0,
&defaultmode, 8) == 0)
var = default_var;
}
if (noaccel)
var.accel_flags &= ~FB_ACCELF_TEXT;
else
var.accel_flags |= FB_ACCELF_TEXT;
if (aty128_decode_var(&var, &info->default_par, info)) {
printk(KERN_ERR "aty128fb: Cannot set default mode.\n");
return 0;
}
/* load up the palette with default colors */
for (j = 0; j < 16; j++) {
k = color_table[j];
info->palette[j].red = default_red[k];
info->palette[j].green = default_grn[k];
info->palette[j].blue = default_blu[k];
}
/* setup the DAC the way we like it */
dac = aty_ld_le32(DAC_CNTL);
dac |= (DAC_8BIT_EN | DAC_RANGE_CNTL);
dac |= DAC_MASK;
if (info->chip_gen == rage_M3)
dac |= DAC_PALETTE2_SNOOP_EN;
aty_st_le32(DAC_CNTL, dac);
/* turn off bus mastering, just in case */
aty_st_le32(BUS_CNTL, aty_ld_le32(BUS_CNTL) | BUS_MASTER_DIS);
aty128fb_set_var(&var, -1, &info->fb_info);
aty128_init_engine(&info->default_par, info);
board_list = aty128_board_list_add(board_list, info);
if (register_framebuffer(&info->fb_info) < 0)
return 0;
#ifdef CONFIG_PMAC_BACKLIGHT
/* Could be extended to Rage128Pro LVDS output too */
if (info->chip_gen == rage_M3)
register_backlight_controller(&aty128_backlight_controller, info, "ati");
#endif /* CONFIG_PMAC_BACKLIGHT */
#ifdef CONFIG_PMAC_PBOOK
if (!info->pdev)
printk(KERN_WARNING "aty128fb: Not a PCI card, can't enable power management\n");
else {
info->pm_reg = pci_find_capability(info->pdev, PCI_CAP_ID_PM);
pmu_register_sleep_notifier(&aty128_sleep_notifier);
}
#endif
printk(KERN_INFO "fb%d: %s frame buffer device on %s\n",
GET_FB_IDX(info->fb_info.node), aty128fb_name, name);
return 1; /* success! */
}
/* add a new card to the list ++ajoshi */
static struct
fb_info_aty128 *aty128_board_list_add(struct fb_info_aty128 *board_list,
struct fb_info_aty128 *new_node)
{
struct fb_info_aty128 *i_p = board_list;
new_node->next = NULL;
if(board_list == NULL)
return new_node;
while(i_p->next != NULL)
i_p = i_p->next;
i_p->next = new_node;
return board_list;
}
int __init
aty128fb_init(void)
{
#ifdef CONFIG_PCI
struct pci_dev *pdev = NULL;
const struct aty128_chip_info *aci = &aty128_pci_probe_list[0];
while (aci->name != NULL) {
pdev = pci_find_device(PCI_VENDOR_ID_ATI, aci->device, pdev);
while (pdev != NULL) {
if (aty128_pci_register(pdev, aci) == 0)
return 0;
pdev = pci_find_device(PCI_VENDOR_ID_ATI, aci->device, pdev);
}
aci++;
}
#endif
return 0;
}
#ifdef CONFIG_PCI
/* register a card ++ajoshi */
static int __init
aty128_pci_register(struct pci_dev *pdev,
const struct aty128_chip_info *aci)
{
struct fb_info_aty128 *info = NULL;
unsigned long fb_addr, reg_addr;
int err;
#if !defined(CONFIG_PPC) && !defined(__sparc__)
char *bios_seg = NULL;
#endif
/* Enable device in PCI config */
if ((err = pci_enable_device(pdev))) {
printk(KERN_ERR "aty128fb: Cannot enable PCI device: %d\n",
err);
return -ENODEV;
}
fb_addr = pci_resource_start(pdev, 0);
if (!request_mem_region(fb_addr, pci_resource_len(pdev, 0),
"aty128fb FB")) {
printk(KERN_ERR "aty128fb: cannot reserve frame "
"buffer memory\n");
goto err_free_fb;
}
reg_addr = pci_resource_start(pdev, 2);
if (!request_mem_region(reg_addr, pci_resource_len(pdev, 2),
"aty128fb MMIO")) {
printk(KERN_ERR "aty128fb: cannot reserve MMIO region\n");
goto err_free_mmio;
}
/* We have the resources. Now virtualize them */
if (!(info = kmalloc(sizeof(struct fb_info_aty128), GFP_ATOMIC))) {
printk(KERN_ERR "aty128fb: can't alloc fb_info_aty128\n");
goto err_unmap_out;
}
memset(info, 0, sizeof(struct fb_info_aty128));
/* Copy PCI device info into info->pdev */
info->pdev = pdev;
info->currcon = -1;
/* Virtualize mmio region */
info->regbase_phys = reg_addr;
info->regbase = ioremap(reg_addr, 0x1FFF);
if (!info->regbase)
goto err_free_info;
/* Grab memory size from the card */
info->vram_size = aty_ld_le32(CONFIG_MEMSIZE) & 0x03FFFFFF;
/* Virtualize the framebuffer */
info->frame_buffer_phys = fb_addr;
info->frame_buffer = ioremap(fb_addr, info->vram_size);
if (!info->frame_buffer) {
iounmap((void *)info->regbase);
goto err_free_info;
}
/* If we can't test scratch registers, something is seriously wrong */
if (!register_test(info)) {
printk(KERN_ERR "aty128fb: Can't write to video register!\n");
goto err_out;
}
#if !defined(CONFIG_PPC) && !defined(__sparc__)
if (!(bios_seg = aty128find_ROM(info)))
printk(KERN_INFO "aty128fb: Rage128 BIOS not located. "
"Guessing...\n");
else {
printk(KERN_INFO "aty128fb: Rage128 BIOS located at "
"segment %4.4X\n", (unsigned int)bios_seg);
aty128_get_pllinfo(info, bios_seg);
}
#endif
aty128_timings(info);
if (!aty128_init(info, "PCI"))
goto err_out;
#ifdef CONFIG_MTRR
if (mtrr) {
info->mtrr.vram = mtrr_add(info->frame_buffer_phys,
info->vram_size, MTRR_TYPE_WRCOMB, 1);
info->mtrr.vram_valid = 1;
/* let there be speed */
printk(KERN_INFO "aty128fb: Rage128 MTRR set to ON\n");
}
#endif /* CONFIG_MTRR */
#ifdef CONFIG_FB_COMPAT_XPMAC
if (!console_fb_info)
console_fb_info = &info->fb_info;
#endif
return 0;
err_out:
iounmap(info->frame_buffer);
iounmap(info->regbase);
err_free_info:
kfree(info);
err_unmap_out:
release_mem_region(pci_resource_start(pdev, 2),
pci_resource_len(pdev, 2));
err_free_mmio:
release_mem_region(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
err_free_fb:
release_mem_region(pci_resource_start(pdev, 1),
pci_resource_len(pdev, 1));
return -ENODEV;
}
#endif /* CONFIG_PCI */
/* PPC and Sparc cannot read video ROM */
#if !defined(CONFIG_PPC) && !defined(__sparc__)
static char __init
*aty128find_ROM(struct fb_info_aty128 *info)
{
u32 segstart;
char *rom_base;
char *rom;
int stage;
int i;
char aty_rom_sig[] = "761295520"; /* ATI ROM Signature */
char R128_sig[] = "R128"; /* Rage128 ROM identifier */
for (segstart=0x000c0000; segstart<0x000f0000; segstart+=0x00001000) {
stage = 1;
rom_base = (char *)ioremap(segstart, 0x1000);
if ((*rom_base == 0x55) && (((*(rom_base + 1)) & 0xff) == 0xaa))
stage = 2;
if (stage != 2) {
iounmap(rom_base);
continue;
}
rom = rom_base;
for (i = 0; (i < 128 - strlen(aty_rom_sig)) && (stage != 3); i++) {
if (aty_rom_sig[0] == *rom)
if (strncmp(aty_rom_sig, rom,
strlen(aty_rom_sig)) == 0)
stage = 3;
rom++;
}
if (stage != 3) {
iounmap(rom_base);
continue;
}
rom = rom_base;
/* ATI signature found. Let's see if it's a Rage128 */
for (i = 0; (i < 512) && (stage != 4); i++) {
if (R128_sig[0] == *rom)
if (strncmp(R128_sig, rom,
strlen(R128_sig)) == 0)
stage = 4;
rom++;
}
if (stage != 4) {
iounmap(rom_base);
continue;
}
return rom_base;
}
return NULL;
}
static void __init
aty128_get_pllinfo(struct fb_info_aty128 *info, char *bios_seg)
{
void *bios_header;
void *header_ptr;
u16 bios_header_offset, pll_info_offset;
PLL_BLOCK pll;
bios_header = bios_seg + 0x48L;
header_ptr = bios_header;
bios_header_offset = readw(header_ptr);
bios_header = bios_seg + bios_header_offset;
bios_header += 0x30;
header_ptr = bios_header;
pll_info_offset = readw(header_ptr);
header_ptr = bios_seg + pll_info_offset;
memcpy_fromio(&pll, header_ptr, 50);
info->constants.ppll_max = pll.PCLK_max_freq;
info->constants.ppll_min = pll.PCLK_min_freq;
info->constants.xclk = (u32)pll.XCLK;
info->constants.ref_divider = (u32)pll.PCLK_ref_divider;
info->constants.dotclock = (u32)pll.PCLK_ref_freq;
DBG("ppll_max %d ppll_min %d xclk %d ref_divider %d dotclock %d\n",
info->constants.ppll_max, info->constants.ppll_min,
info->constants.xclk, info->constants.ref_divider,
info->constants.dotclock);
}
#endif /* !CONFIG_PPC */
/* fill in known card constants if pll_block is not available */
static void __init
aty128_timings(struct fb_info_aty128 *info)
{
#ifdef CONFIG_PPC
/* instead of a table lookup, assume OF has properly
* setup the PLL registers and use their values
* to set the XCLK values and reference divider values */
u32 x_mpll_ref_fb_div;
u32 xclk_cntl;
u32 Nx, M;
unsigned PostDivSet[] =
{ 0, 1, 2, 4, 8, 3, 6, 12 };
#endif
if (!info->constants.dotclock)
info->constants.dotclock = 2950;
#ifdef CONFIG_PPC
x_mpll_ref_fb_div = aty_ld_pll(X_MPLL_REF_FB_DIV);
xclk_cntl = aty_ld_pll(XCLK_CNTL) & 0x7;
Nx = (x_mpll_ref_fb_div & 0x00ff00) >> 8;
M = x_mpll_ref_fb_div & 0x0000ff;
info->constants.xclk = round_div((2 * Nx *
info->constants.dotclock), (M * PostDivSet[xclk_cntl]));
info->constants.ref_divider =
aty_ld_pll(PPLL_REF_DIV) & PPLL_REF_DIV_MASK;
#endif
if (!info->constants.ref_divider) {
info->constants.ref_divider = 0x3b;
aty_st_pll(X_MPLL_REF_FB_DIV, 0x004c4c1e);
aty_pll_writeupdate(info);
}
aty_st_pll(PPLL_REF_DIV, info->constants.ref_divider);
aty_pll_writeupdate(info);
/* from documentation */
if (!info->constants.ppll_min)
info->constants.ppll_min = 12500;
if (!info->constants.ppll_max)
info->constants.ppll_max = 25000; /* 23000 on some cards? */
if (!info->constants.xclk)
info->constants.xclk = 0x1d4d; /* same as mclk */
info->constants.fifo_width = 128;
info->constants.fifo_depth = 32;
switch (aty_ld_le32(MEM_CNTL) & 0x3) {
case 0:
info->mem = &sdr_128;
break;
case 1:
info->mem = &sdr_sgram;
break;
case 2:
info->mem = &ddr_sgram;
break;
default:
info->mem = &sdr_sgram;
}
}
static int
aty128fbcon_switch(int con, struct fb_info *fb)
{
struct fb_info_aty128 *info = (struct fb_info_aty128 *)fb;
struct aty128fb_par par;
/* Do we have to save the colormap? */
if (fb_display[info->currcon].cmap.len)
fb_get_cmap(&fb_display[info->currcon].cmap, 1,
aty128_getcolreg, fb);
/* set the current console */
info->currcon = con;
aty128_decode_var(&fb_display[con].var, &par, info);
aty128_set_par(&par, info);
aty128_set_dispsw(&fb_display[con], info, par.crtc.bpp,
par.accel_flags & FB_ACCELF_TEXT);
do_install_cmap(con, fb);
return 1;
}
/*
* Blank the display.
*/
static void
aty128fbcon_blank(int blank, struct fb_info *fb)
{
struct fb_info_aty128 *info = (struct fb_info_aty128 *)fb;
u8 state = 0;
#ifdef CONFIG_PMAC_BACKLIGHT
if ((_machine == _MACH_Pmac) && blank)
set_backlight_enable(0);
#endif /* CONFIG_PMAC_BACKLIGHT */
if (blank & VESA_VSYNC_SUSPEND)
state |= 2;
if (blank & VESA_HSYNC_SUSPEND)
state |= 1;
if (blank & VESA_POWERDOWN)
state |= 4;
aty_st_8(CRTC_EXT_CNTL+1, state);
#ifdef CONFIG_PMAC_PBOOK
if (info->chip_gen == rage_M3) {
aty128_set_crt_enable(info, info->crt_on && !blank);
aty128_set_lcd_enable(info, info->lcd_on && !blank);
}
#endif
#ifdef CONFIG_PMAC_BACKLIGHT
if ((_machine == _MACH_Pmac) && !blank)
set_backlight_enable(1);
#endif /* CONFIG_PMAC_BACKLIGHT */
}
/*
* Read a single color register and split it into
* colors/transparent. Return != 0 for invalid regno.
*/
static int
aty128_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
u_int *transp, struct fb_info *fb)
{
struct fb_info_aty128 *info = (struct fb_info_aty128 *) fb;
if (regno > 255)
return 1;
*red = (info->palette[regno].red<<8) | info->palette[regno].red;
*green = (info->palette[regno].green<<8) | info->palette[regno].green;
*blue = (info->palette[regno].blue<<8) | info->palette[regno].blue;
*transp = 0;
return 0;
}
/*
* Set a single color register. The values supplied are already
* rounded down to the hardware's capabilities (according to the
* entries in the var structure). Return != 0 for invalid regno.
*/
static int
aty128_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *fb)
{
struct fb_info_aty128 *info = (struct fb_info_aty128 *)fb;
u32 palreg;
if (regno > 255)
return 1;
red >>= 8;
green >>= 8;
blue >>= 8;
info->palette[regno].red = red;
info->palette[regno].green = green;
info->palette[regno].blue = blue;
/* Note: For now, on M3, we set palette on both heads, which may
* be useless. Can someone with a M3 check this ? */
/* initialize gamma ramp for hi-color+ */
if ((info->current_par.crtc.bpp > 8) && (regno == 0)) {
int i;
for (i=0; i<256; i++)
aty128_st_pal(i, i, i, i, info);
}
/* initialize palette */
palreg = regno;
if (info->current_par.crtc.bpp == 16)
palreg = regno * 8;
if (info->current_par.crtc.depth == 16) {
aty128_st_pal(palreg/2, info->palette[regno/2].red, green,
info->palette[regno/2].blue, info);
green = info->palette[regno*2].green;
}
if (info->current_par.crtc.bpp == 8 || regno < 32)
aty128_st_pal(palreg, red, green, blue, info);
if (regno < 16)
switch (info->current_par.crtc.depth) {
#ifdef FBCON_HAS_CFB16
case 15:
info->fbcon_cmap.cfb16[regno] = (regno << 10) | (regno << 5) |
regno;
break;
case 16:
info->fbcon_cmap.cfb16[regno] = (regno << 11) | (regno << 5) |
regno;
break;
#endif
#ifdef FBCON_HAS_CFB24
case 24:
info->fbcon_cmap.cfb24[regno] = (regno << 16) | (regno << 8) |
regno;
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32: {
u32 i = (regno << 8) | regno;
info->fbcon_cmap.cfb32[regno] = (i << 16) | i;
break;
}
#endif
}
return 0;
}
static void
do_install_cmap(int con, struct fb_info *info)
{
struct display *disp = (con < 0) ? info->disp : (fb_display + con);
if (disp->cmap.len)
fb_set_cmap(&disp->cmap, 1, aty128_setcolreg, info);
else
fb_set_cmap(fb_default_cmap((disp->var.bits_per_pixel==8) ? 256 :32),
1, aty128_setcolreg, info);
}
#define ATY_MIRROR_LCD_ON 0x00000001
#define ATY_MIRROR_CRT_ON 0x00000002
/* out param: u32* backlight value: 0 to 15 */
#define FBIO_ATY128_GET_MIRROR _IOR('@', 1, sizeof(__u32*))
/* in param: u32* backlight value: 0 to 15 */
#define FBIO_ATY128_SET_MIRROR _IOW('@', 2, sizeof(__u32*))
static int aty128fb_ioctl(struct inode *inode, struct file *file, u_int cmd,
u_long arg, int con, struct fb_info *info)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)info;
u32 value;
int rc;
switch (cmd) {
#ifdef CONFIG_PMAC_PBOOK
case FBIO_ATY128_SET_MIRROR:
if (fb->chip_gen != rage_M3)
return -EINVAL;
rc = get_user(value, (__u32*)arg);
if (rc)
return rc;
fb->lcd_on = (value & 0x01) != 0;
fb->crt_on = (value & 0x02) != 0;
if (!fb->crt_on && !fb->lcd_on)
fb->lcd_on = 1;
aty128_set_crt_enable(fb, fb->crt_on);
aty128_set_lcd_enable(fb, fb->lcd_on);
break;
case FBIO_ATY128_GET_MIRROR:
if (fb->chip_gen != rage_M3)
return -EINVAL;
value = (fb->crt_on << 1) | fb->lcd_on;
return put_user(value, (__u32*)arg);
#endif
default:
return -EINVAL;
}
return 0;
}
#ifdef CONFIG_PMAC_BACKLIGHT
static int backlight_conv[] = {
0xff, 0xc0, 0xb5, 0xaa, 0x9f, 0x94, 0x89, 0x7e,
0x73, 0x68, 0x5d, 0x52, 0x47, 0x3c, 0x31, 0x24
};
/* We turn off the LCD completely instead of just dimming the backlight.
* This provides greater power saving and the display is useless without
* backlight anyway
*/
#define BACKLIGHT_LVDS_OFF
/* That one prevents proper CRT output with LCD off */
#undef BACKLIGHT_DAC_OFF
static int
aty128_set_backlight_enable(int on, int level, void* data)
{
struct fb_info_aty128 *info = (struct fb_info_aty128 *)data;
unsigned int reg = aty_ld_le32(LVDS_GEN_CNTL);
if (!info->lcd_on)
on = 0;
reg |= LVDS_BL_MOD_EN | LVDS_BLON;
if (on && level > BACKLIGHT_OFF) {
reg |= LVDS_DIGION;
if (!reg & LVDS_ON) {
reg &= ~LVDS_BLON;
aty_st_le32(LVDS_GEN_CNTL, reg);
(void)aty_ld_le32(LVDS_GEN_CNTL);
mdelay(10);
reg |= LVDS_BLON;
aty_st_le32(LVDS_GEN_CNTL, reg);
}
reg &= ~LVDS_BL_MOD_LEVEL_MASK;
reg |= (backlight_conv[level] << LVDS_BL_MOD_LEVEL_SHIFT);
#ifdef BACKLIGHT_LVDS_OFF
reg |= LVDS_ON | LVDS_EN;
reg &= ~LVDS_DISPLAY_DIS;
#endif
aty_st_le32(LVDS_GEN_CNTL, reg);
#ifdef BACKLIGHT_DAC_OFF
aty_st_le32(DAC_CNTL, aty_ld_le32(DAC_CNTL) & (~DAC_PDWN));
#endif
} else {
reg &= ~LVDS_BL_MOD_LEVEL_MASK;
reg |= (backlight_conv[0] << LVDS_BL_MOD_LEVEL_SHIFT);
#ifdef BACKLIGHT_LVDS_OFF
reg |= LVDS_DISPLAY_DIS;
aty_st_le32(LVDS_GEN_CNTL, reg);
(void)aty_ld_le32(LVDS_GEN_CNTL);
udelay(10);
reg &= ~(LVDS_ON | LVDS_EN | LVDS_BLON | LVDS_DIGION);
#endif
aty_st_le32(LVDS_GEN_CNTL, reg);
#ifdef BACKLIGHT_DAC_OFF
aty_st_le32(DAC_CNTL, aty_ld_le32(DAC_CNTL) | DAC_PDWN);
#endif
}
return 0;
}
static int
aty128_set_backlight_level(int level, void* data)
{
return aty128_set_backlight_enable(1, level, data);
}
#endif /* CONFIG_PMAC_BACKLIGHT */
/*
* Accelerated functions
*/
static inline void
aty128_rectcopy(int srcx, int srcy, int dstx, int dsty,
u_int width, u_int height,
struct fb_info_aty128 *info)
{
u32 save_dp_datatype, save_dp_cntl, dstval;
if (!width || !height)
return;
dstval = depth_to_dst(info->current_par.crtc.depth);
if (dstval == DST_24BPP) {
srcx *= 3;
dstx *= 3;
width *= 3;
} else if (dstval == -EINVAL) {
printk("aty128fb: invalid depth or RGBA\n");
return;
}
wait_for_fifo(2, info);
save_dp_datatype = aty_ld_le32(DP_DATATYPE);
save_dp_cntl = aty_ld_le32(DP_CNTL);
wait_for_fifo(6, info);
aty_st_le32(SRC_Y_X, (srcy << 16) | srcx);
aty_st_le32(DP_MIX, ROP3_SRCCOPY | DP_SRC_RECT);
aty_st_le32(DP_CNTL, DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM);
aty_st_le32(DP_DATATYPE, save_dp_datatype | dstval | SRC_DSTCOLOR);
aty_st_le32(DST_Y_X, (dsty << 16) | dstx);
aty_st_le32(DST_HEIGHT_WIDTH, (height << 16) | width);
info->blitter_may_be_busy = 1;
wait_for_fifo(2, info);
aty_st_le32(DP_DATATYPE, save_dp_datatype);
aty_st_le32(DP_CNTL, save_dp_cntl);
}
/*
* Text mode accelerated functions
*/
static void
fbcon_aty128_bmove(struct display *p, int sy, int sx, int dy, int dx,
int height, int width)
{
sx *= fontwidth(p);
sy *= fontheight(p);
dx *= fontwidth(p);
dy *= fontheight(p);
width *= fontwidth(p);
height *= fontheight(p);
aty128_rectcopy(sx, sy, dx, dy, width, height,
(struct fb_info_aty128 *)p->fb_info);
}
#ifdef FBCON_HAS_CFB8
static void fbcon_aty8_putc(struct vc_data *conp, struct display *p,
int c, int yy, int xx)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb8_putc(conp, p, c, yy, xx);
}
static void fbcon_aty8_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count,
int yy, int xx)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb8_putcs(conp, p, s, count, yy, xx);
}
static void fbcon_aty8_clear_margins(struct vc_data *conp,
struct display *p, int bottom_only)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb8_clear_margins(conp, p, bottom_only);
}
static struct display_switch fbcon_aty128_8 = {
setup: fbcon_cfb8_setup,
bmove: fbcon_aty128_bmove,
clear: fbcon_cfb8_clear,
putc: fbcon_aty8_putc,
putcs: fbcon_aty8_putcs,
revc: fbcon_cfb8_revc,
clear_margins: fbcon_aty8_clear_margins,
fontwidthmask: FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef FBCON_HAS_CFB16
static void fbcon_aty16_putc(struct vc_data *conp, struct display *p,
int c, int yy, int xx)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb16_putc(conp, p, c, yy, xx);
}
static void fbcon_aty16_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count,
int yy, int xx)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb16_putcs(conp, p, s, count, yy, xx);
}
static void fbcon_aty16_clear_margins(struct vc_data *conp,
struct display *p, int bottom_only)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb16_clear_margins(conp, p, bottom_only);
}
static struct display_switch fbcon_aty128_16 = {
setup: fbcon_cfb16_setup,
bmove: fbcon_aty128_bmove,
clear: fbcon_cfb16_clear,
putc: fbcon_aty16_putc,
putcs: fbcon_aty16_putcs,
revc: fbcon_cfb16_revc,
clear_margins: fbcon_aty16_clear_margins,
fontwidthmask: FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef FBCON_HAS_CFB24
static void fbcon_aty24_putc(struct vc_data *conp, struct display *p,
int c, int yy, int xx)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb24_putc(conp, p, c, yy, xx);
}
static void fbcon_aty24_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count,
int yy, int xx)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb24_putcs(conp, p, s, count, yy, xx);
}
static void fbcon_aty24_clear_margins(struct vc_data *conp,
struct display *p, int bottom_only)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb24_clear_margins(conp, p, bottom_only);
}
static struct display_switch fbcon_aty128_24 = {
setup: fbcon_cfb24_setup,
bmove: fbcon_aty128_bmove,
clear: fbcon_cfb24_clear,
putc: fbcon_aty24_putc,
putcs: fbcon_aty24_putcs,
revc: fbcon_cfb24_revc,
clear_margins: fbcon_aty24_clear_margins,
fontwidthmask: FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef FBCON_HAS_CFB32
static void fbcon_aty32_putc(struct vc_data *conp, struct display *p,
int c, int yy, int xx)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb32_putc(conp, p, c, yy, xx);
}
static void fbcon_aty32_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count,
int yy, int xx)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb32_putcs(conp, p, s, count, yy, xx);
}
static void fbcon_aty32_clear_margins(struct vc_data *conp,
struct display *p, int bottom_only)
{
struct fb_info_aty128 *fb = (struct fb_info_aty128 *)(p->fb_info);
if (fb->blitter_may_be_busy)
wait_for_idle(fb);
fbcon_cfb32_clear_margins(conp, p, bottom_only);
}
static struct display_switch fbcon_aty128_32 = {
setup: fbcon_cfb32_setup,
bmove: fbcon_aty128_bmove,
clear: fbcon_cfb32_clear,
putc: fbcon_aty32_putc,
putcs: fbcon_aty32_putcs,
revc: fbcon_cfb32_revc,
clear_margins: fbcon_aty32_clear_margins,
fontwidthmask: FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef CONFIG_PMAC_PBOOK
static void
aty128_set_suspend(struct fb_info_aty128 *info, int suspend)
{
u32 pmgt;
u16 pwr_command;
if (!info->pm_reg)
return;
/* Set the chip into the appropriate suspend mode (we use D2,
* D3 would require a complete re-initialisation of the chip,
* including PCI config registers, clocks, AGP configuration, ...)
*/
if (suspend) {
/* Make sure CRTC2 is reset. Remove that the day we decide to
* actually use CRTC2 and replace it with real code for disabling
* the CRTC2 output during sleep
*/
aty_st_le32(CRTC2_GEN_CNTL, aty_ld_le32(CRTC2_GEN_CNTL) &
~(CRTC2_EN));
/* Set the power management mode to be PCI based */
pmgt = aty_ld_pll(POWER_MANAGEMENT);
#if 0
pmgt &= ~PWR_MGT_MODE_MASK;
pmgt |= PWR_MGT_MODE_PCI | PWR_MGT_ON | PWR_MGT_TRISTATE_MEM_EN | PWR_MGT_AUTO_PWR_UP_EN;
#else /* Use this magic value for now */
pmgt = 0x0c005407;
#endif
aty_st_pll(POWER_MANAGEMENT, pmgt);
(void)aty_ld_pll(POWER_MANAGEMENT);
aty_st_le32(BUS_CNTL1, 0x00000010);
aty_st_le32(MEM_POWER_MISC, 0x0c830000);
mdelay(100);
pci_read_config_word(info->pdev, info->pm_reg+PCI_PM_CTRL, &pwr_command);
/* Switch PCI power management to D2 */
pci_write_config_word(info->pdev, info->pm_reg+PCI_PM_CTRL,
(pwr_command & ~PCI_PM_CTRL_STATE_MASK) | 2);
pci_read_config_word(info->pdev, info->pm_reg+PCI_PM_CTRL, &pwr_command);
} else {
/* Switch back PCI power management to D0 */
mdelay(100);
pci_write_config_word(info->pdev, info->pm_reg+PCI_PM_CTRL, 0);
mdelay(100);
pci_read_config_word(info->pdev, info->pm_reg+PCI_PM_CTRL, &pwr_command);
mdelay(100);
}
}
extern struct display_switch fbcon_dummy;
/*
* Save the contents of the frame buffer when we go to sleep,
* and restore it when we wake up again.
*/
int
aty128_sleep_notify(struct pmu_sleep_notifier *self, int when)
{
struct fb_info_aty128 *info;
int result;
result = PBOOK_SLEEP_OK;
for (info = board_list; info != NULL; info = info->next) {
struct fb_fix_screeninfo fix;
int nb;
aty128fb_get_fix(&fix, fg_console, (struct fb_info *)info);
nb = fb_display[fg_console].var.yres * fix.line_length;
switch (when) {
case PBOOK_SLEEP_REQUEST:
info->save_framebuffer = vmalloc(nb);
if (info->save_framebuffer == NULL)
return PBOOK_SLEEP_REFUSE;
break;
case PBOOK_SLEEP_REJECT:
if (info->save_framebuffer) {
vfree(info->save_framebuffer);
info->save_framebuffer = 0;
}
break;
case PBOOK_SLEEP_NOW:
if (info->currcon >= 0)
fb_display[info->currcon].dispsw = &fbcon_dummy;
wait_for_idle(info);
aty128_reset_engine(info);
wait_for_idle(info);
/* Backup fb content */
if (info->save_framebuffer)
memcpy_fromio(info->save_framebuffer,
(void *)info->frame_buffer, nb);
/* Blank display and LCD */
aty128fbcon_blank(VESA_POWERDOWN+1, (struct fb_info *)info);
/* Sleep the chip */
aty128_set_suspend(info, 1);
break;
case PBOOK_WAKE:
/* Wake the chip */
aty128_set_suspend(info, 0);
aty128_reset_engine(info);
wait_for_idle(info);
/* Restore fb content */
if (info->save_framebuffer) {
memcpy_toio((void *)info->frame_buffer,
info->save_framebuffer, nb);
vfree(info->save_framebuffer);
info->save_framebuffer = 0;
}
if (info->currcon >= 0) {
aty128_set_dispsw(
&fb_display[info->currcon],
info,
info->current_par.crtc.bpp,
info->current_par.accel_flags & FB_ACCELF_TEXT);
}
aty128fbcon_blank(0, (struct fb_info *)info);
break;
}
}
return result;
}
#endif /* CONFIG_PMAC_PBOOK */
#ifdef MODULE
MODULE_AUTHOR("(c)1999-2000 Brad Douglas <brad@neruo.com>");
MODULE_DESCRIPTION("FBDev driver for ATI Rage128 / Pro cards");
MODULE_LICENSE("GPL");
MODULE_PARM(noaccel, "i");
MODULE_PARM_DESC(noaccel, "Disable hardware acceleration (0 or 1=disabled) (default=0)");
MODULE_PARM(font, "s");
MODULE_PARM_DESC(font, "Specify one of the compiled-in fonts (default=none)");
MODULE_PARM(mode, "s");
MODULE_PARM_DESC(mode, "Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");
#ifdef CONFIG_MTRR
MODULE_PARM(nomtrr, "i");
MODULE_PARM_DESC(nomtrr, "Disable MTRR support (0 or 1=disabled) (default=0)");
#endif
int __init
init_module(void)
{
if (noaccel) {
noaccel = 1;
printk(KERN_INFO "aty128fb: Parameter NOACCEL set\n");
}
if (font) {
strncpy(fontname, font, sizeof(fontname)-1);
printk(KERN_INFO "aty128fb: Parameter FONT set to %s\n", font);
}
if (mode) {
mode_option = mode;
printk(KERN_INFO "aty128fb: Parameter MODE set to %s\n", mode);
}
#ifdef CONFIG_MTRR
if (nomtrr) {
mtrr = 0;
printk(KERN_INFO "aty128fb: Parameter NOMTRR set\n");
}
#endif
aty128fb_init();
return 0;
}
void __exit
cleanup_module(void)
{
struct fb_info_aty128 *info = board_list;
while (board_list) {
info = board_list;
board_list = board_list->next;
unregister_framebuffer(&info->fb_info);
#ifdef CONFIG_MTRR
if (info->mtrr.vram_valid)
mtrr_del(info->mtrr.vram, info->frame_buffer_phys,
info->vram_size);
#endif /* CONFIG_MTRR */
iounmap(info->regbase);
iounmap(info->frame_buffer);
release_mem_region(pci_resource_start(info->pdev, 0),
pci_resource_len(info->pdev, 0));
release_mem_region(pci_resource_start(info->pdev, 1),
pci_resource_len(info->pdev, 1));
release_mem_region(pci_resource_start(info->pdev, 2),
pci_resource_len(info->pdev, 2));
kfree(info);
}
}
#endif /* MODULE */