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linux-next/drivers/video/stifb.c
Helge Deller 04a3f959f6 stifb: detect cards in double buffer mode more reliably 
Visualize-EG, Graffiti and A4450A graphics cards on PARISC can
be configured in double-buffer and standard mode, but the stifb
driver supports standard mode only.
This patch detects double-buffered cards more reliable.

It is a real bugfix for a very nasty problem for all parisc users which have
wrongly configured their graphic card.  The problem: The stifb graphics driver
will not detect that the card is wrongly configured and then nevertheless just
enables the graphics mode, which it shouldn't.  In the end, the user will see
no further updates / boot messages on the screen.

We had documented this problem already on our FAQ
(http://parisc-linux.org/faq/index.html#viseg "Why do I get corrupted graphics
with my Vis-EG/Graffiti/A4450A card?") but people still run into this problem.
 So having this fix in as early as possible can help us.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Cc: <stable@kernel.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-11 15:47:40 -07:00

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/*
* linux/drivers/video/stifb.c -
* Low level Frame buffer driver for HP workstations with
* STI (standard text interface) video firmware.
*
* Copyright (C) 2001-2006 Helge Deller <deller@gmx.de>
* Portions Copyright (C) 2001 Thomas Bogendoerfer <tsbogend@alpha.franken.de>
*
* Based on:
* - linux/drivers/video/artistfb.c -- Artist frame buffer driver
* Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
* - based on skeletonfb, which was
* Created 28 Dec 1997 by Geert Uytterhoeven
* - HP Xhp cfb-based X11 window driver for XFree86
* (c)Copyright 1992 Hewlett-Packard Co.
*
*
* The following graphics display devices (NGLE family) are supported by this driver:
*
* HPA4070A known as "HCRX", a 1280x1024 color device with 8 planes
* HPA4071A known as "HCRX24", a 1280x1024 color device with 24 planes,
* optionally available with a hardware accelerator as HPA4071A_Z
* HPA1659A known as "CRX", a 1280x1024 color device with 8 planes
* HPA1439A known as "CRX24", a 1280x1024 color device with 24 planes,
* optionally available with a hardware accelerator.
* HPA1924A known as "GRX", a 1280x1024 grayscale device with 8 planes
* HPA2269A known as "Dual CRX", a 1280x1024 color device with 8 planes,
* implements support for two displays on a single graphics card.
* HP710C internal graphics support optionally available on the HP9000s710 SPU,
* supports 1280x1024 color displays with 8 planes.
* HP710G same as HP710C, 1280x1024 grayscale only
* HP710L same as HP710C, 1024x768 color only
* HP712 internal graphics support on HP9000s712 SPU, supports 640x480,
* 1024x768 or 1280x1024 color displays on 8 planes (Artist)
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
/* TODO:
* - 1bpp mode is completely untested
* - add support for h/w acceleration
* - add hardware cursor
* - automatically disable double buffering (e.g. on RDI precisionbook laptop)
*/
/* on supported graphic devices you may:
* #define FALLBACK_TO_1BPP to fall back to 1 bpp, or
* #undef FALLBACK_TO_1BPP to reject support for unsupported cards */
#undef FALLBACK_TO_1BPP
#undef DEBUG_STIFB_REGS /* debug sti register accesses */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <asm/grfioctl.h> /* for HP-UX compatibility */
#include <asm/uaccess.h>
#include "sticore.h"
/* REGION_BASE(fb_info, index) returns the virtual address for region <index> */
#define REGION_BASE(fb_info, index) \
F_EXTEND(fb_info->sti->glob_cfg->region_ptrs[index])
#define NGLEDEVDEPROM_CRT_REGION 1
#define NR_PALETTE 256
typedef struct {
__s32 video_config_reg;
__s32 misc_video_start;
__s32 horiz_timing_fmt;
__s32 serr_timing_fmt;
__s32 vert_timing_fmt;
__s32 horiz_state;
__s32 vert_state;
__s32 vtg_state_elements;
__s32 pipeline_delay;
__s32 misc_video_end;
} video_setup_t;
typedef struct {
__s16 sizeof_ngle_data;
__s16 x_size_visible; /* visible screen dim in pixels */
__s16 y_size_visible;
__s16 pad2[15];
__s16 cursor_pipeline_delay;
__s16 video_interleaves;
__s32 pad3[11];
} ngle_rom_t;
struct stifb_info {
struct fb_info info;
unsigned int id;
ngle_rom_t ngle_rom;
struct sti_struct *sti;
int deviceSpecificConfig;
u32 pseudo_palette[16];
};
static int __initdata stifb_bpp_pref[MAX_STI_ROMS];
/* ------------------- chipset specific functions -------------------------- */
/* offsets to graphic-chip internal registers */
#define REG_1 0x000118
#define REG_2 0x000480
#define REG_3 0x0004a0
#define REG_4 0x000600
#define REG_6 0x000800
#define REG_8 0x000820
#define REG_9 0x000a04
#define REG_10 0x018000
#define REG_11 0x018004
#define REG_12 0x01800c
#define REG_13 0x018018
#define REG_14 0x01801c
#define REG_15 0x200000
#define REG_15b0 0x200000
#define REG_16b1 0x200005
#define REG_16b3 0x200007
#define REG_21 0x200218
#define REG_22 0x0005a0
#define REG_23 0x0005c0
#define REG_26 0x200118
#define REG_27 0x200308
#define REG_32 0x21003c
#define REG_33 0x210040
#define REG_34 0x200008
#define REG_35 0x018010
#define REG_38 0x210020
#define REG_39 0x210120
#define REG_40 0x210130
#define REG_42 0x210028
#define REG_43 0x21002c
#define REG_44 0x210030
#define REG_45 0x210034
#define READ_BYTE(fb,reg) gsc_readb((fb)->info.fix.mmio_start + (reg))
#define READ_WORD(fb,reg) gsc_readl((fb)->info.fix.mmio_start + (reg))
#ifndef DEBUG_STIFB_REGS
# define DEBUG_OFF()
# define DEBUG_ON()
# define WRITE_BYTE(value,fb,reg) gsc_writeb((value),(fb)->info.fix.mmio_start + (reg))
# define WRITE_WORD(value,fb,reg) gsc_writel((value),(fb)->info.fix.mmio_start + (reg))
#else
static int debug_on = 1;
# define DEBUG_OFF() debug_on=0
# define DEBUG_ON() debug_on=1
# define WRITE_BYTE(value,fb,reg) do { if (debug_on) \
printk(KERN_DEBUG "%30s: WRITE_BYTE(0x%06x) = 0x%02x (old=0x%02x)\n", \
__FUNCTION__, reg, value, READ_BYTE(fb,reg)); \
gsc_writeb((value),(fb)->info.fix.mmio_start + (reg)); } while (0)
# define WRITE_WORD(value,fb,reg) do { if (debug_on) \
printk(KERN_DEBUG "%30s: WRITE_WORD(0x%06x) = 0x%08x (old=0x%08x)\n", \
__FUNCTION__, reg, value, READ_WORD(fb,reg)); \
gsc_writel((value),(fb)->info.fix.mmio_start + (reg)); } while (0)
#endif /* DEBUG_STIFB_REGS */
#define ENABLE 1 /* for enabling/disabling screen */
#define DISABLE 0
#define NGLE_LOCK(fb_info) do { } while (0)
#define NGLE_UNLOCK(fb_info) do { } while (0)
static void
SETUP_HW(struct stifb_info *fb)
{
char stat;
do {
stat = READ_BYTE(fb, REG_15b0);
if (!stat)
stat = READ_BYTE(fb, REG_15b0);
} while (stat);
}
static void
SETUP_FB(struct stifb_info *fb)
{
unsigned int reg10_value = 0;
SETUP_HW(fb);
switch (fb->id)
{
case CRT_ID_VISUALIZE_EG:
case S9000_ID_ARTIST:
case S9000_ID_A1659A:
reg10_value = 0x13601000;
break;
case S9000_ID_A1439A:
if (fb->info.var.bits_per_pixel == 32)
reg10_value = 0xBBA0A000;
else
reg10_value = 0x13601000;
break;
case S9000_ID_HCRX:
if (fb->info.var.bits_per_pixel == 32)
reg10_value = 0xBBA0A000;
else
reg10_value = 0x13602000;
break;
case S9000_ID_TIMBER:
case CRX24_OVERLAY_PLANES:
reg10_value = 0x13602000;
break;
}
if (reg10_value)
WRITE_WORD(reg10_value, fb, REG_10);
WRITE_WORD(0x83000300, fb, REG_14);
SETUP_HW(fb);
WRITE_BYTE(1, fb, REG_16b1);
}
static void
START_IMAGE_COLORMAP_ACCESS(struct stifb_info *fb)
{
SETUP_HW(fb);
WRITE_WORD(0xBBE0F000, fb, REG_10);
WRITE_WORD(0x03000300, fb, REG_14);
WRITE_WORD(~0, fb, REG_13);
}
static void
WRITE_IMAGE_COLOR(struct stifb_info *fb, int index, int color)
{
SETUP_HW(fb);
WRITE_WORD(((0x100+index)<<2), fb, REG_3);
WRITE_WORD(color, fb, REG_4);
}
static void
FINISH_IMAGE_COLORMAP_ACCESS(struct stifb_info *fb)
{
WRITE_WORD(0x400, fb, REG_2);
if (fb->info.var.bits_per_pixel == 32) {
WRITE_WORD(0x83000100, fb, REG_1);
} else {
if (fb->id == S9000_ID_ARTIST || fb->id == CRT_ID_VISUALIZE_EG)
WRITE_WORD(0x80000100, fb, REG_26);
else
WRITE_WORD(0x80000100, fb, REG_1);
}
SETUP_FB(fb);
}
static void
SETUP_RAMDAC(struct stifb_info *fb)
{
SETUP_HW(fb);
WRITE_WORD(0x04000000, fb, 0x1020);
WRITE_WORD(0xff000000, fb, 0x1028);
}
static void
CRX24_SETUP_RAMDAC(struct stifb_info *fb)
{
SETUP_HW(fb);
WRITE_WORD(0x04000000, fb, 0x1000);
WRITE_WORD(0x02000000, fb, 0x1004);
WRITE_WORD(0xff000000, fb, 0x1008);
WRITE_WORD(0x05000000, fb, 0x1000);
WRITE_WORD(0x02000000, fb, 0x1004);
WRITE_WORD(0x03000000, fb, 0x1008);
}
#if 0
static void
HCRX_SETUP_RAMDAC(struct stifb_info *fb)
{
WRITE_WORD(0xffffffff, fb, REG_32);
}
#endif
static void
CRX24_SET_OVLY_MASK(struct stifb_info *fb)
{
SETUP_HW(fb);
WRITE_WORD(0x13a02000, fb, REG_11);
WRITE_WORD(0x03000300, fb, REG_14);
WRITE_WORD(0x000017f0, fb, REG_3);
WRITE_WORD(0xffffffff, fb, REG_13);
WRITE_WORD(0xffffffff, fb, REG_22);
WRITE_WORD(0x00000000, fb, REG_23);
}
static void
ENABLE_DISABLE_DISPLAY(struct stifb_info *fb, int enable)
{
unsigned int value = enable ? 0x43000000 : 0x03000000;
SETUP_HW(fb);
WRITE_WORD(0x06000000, fb, 0x1030);
WRITE_WORD(value, fb, 0x1038);
}
static void
CRX24_ENABLE_DISABLE_DISPLAY(struct stifb_info *fb, int enable)
{
unsigned int value = enable ? 0x10000000 : 0x30000000;
SETUP_HW(fb);
WRITE_WORD(0x01000000, fb, 0x1000);
WRITE_WORD(0x02000000, fb, 0x1004);
WRITE_WORD(value, fb, 0x1008);
}
static void
ARTIST_ENABLE_DISABLE_DISPLAY(struct stifb_info *fb, int enable)
{
u32 DregsMiscVideo = REG_21;
u32 DregsMiscCtl = REG_27;
SETUP_HW(fb);
if (enable) {
WRITE_WORD(READ_WORD(fb, DregsMiscVideo) | 0x0A000000, fb, DregsMiscVideo);
WRITE_WORD(READ_WORD(fb, DregsMiscCtl) | 0x00800000, fb, DregsMiscCtl);
} else {
WRITE_WORD(READ_WORD(fb, DregsMiscVideo) & ~0x0A000000, fb, DregsMiscVideo);
WRITE_WORD(READ_WORD(fb, DregsMiscCtl) & ~0x00800000, fb, DregsMiscCtl);
}
}
#define GET_ROMTABLE_INDEX(fb) \
(READ_BYTE(fb, REG_16b3) - 1)
#define HYPER_CONFIG_PLANES_24 0x00000100
#define IS_24_DEVICE(fb) \
(fb->deviceSpecificConfig & HYPER_CONFIG_PLANES_24)
#define IS_888_DEVICE(fb) \
(!(IS_24_DEVICE(fb)))
#define GET_FIFO_SLOTS(fb, cnt, numslots) \
{ while (cnt < numslots) \
cnt = READ_WORD(fb, REG_34); \
cnt -= numslots; \
}
#define IndexedDcd 0 /* Pixel data is indexed (pseudo) color */
#define Otc04 2 /* Pixels in each longword transfer (4) */
#define Otc32 5 /* Pixels in each longword transfer (32) */
#define Ots08 3 /* Each pixel is size (8)d transfer (1) */
#define OtsIndirect 6 /* Each bit goes through FG/BG color(8) */
#define AddrLong 5 /* FB address is Long aligned (pixel) */
#define BINovly 0x2 /* 8 bit overlay */
#define BINapp0I 0x0 /* Application Buffer 0, Indexed */
#define BINapp1I 0x1 /* Application Buffer 1, Indexed */
#define BINapp0F8 0xa /* Application Buffer 0, Fractional 8-8-8 */
#define BINattr 0xd /* Attribute Bitmap */
#define RopSrc 0x3
#define BitmapExtent08 3 /* Each write hits ( 8) bits in depth */
#define BitmapExtent32 5 /* Each write hits (32) bits in depth */
#define DataDynamic 0 /* Data register reloaded by direct access */
#define MaskDynamic 1 /* Mask register reloaded by direct access */
#define MaskOtc 0 /* Mask contains Object Count valid bits */
#define MaskAddrOffset(offset) (offset)
#define StaticReg(en) (en)
#define BGx(en) (en)
#define FGx(en) (en)
#define BAJustPoint(offset) (offset)
#define BAIndexBase(base) (base)
#define BA(F,C,S,A,J,B,I) \
(((F)<<31)|((C)<<27)|((S)<<24)|((A)<<21)|((J)<<16)|((B)<<12)|(I))
#define IBOvals(R,M,X,S,D,L,B,F) \
(((R)<<8)|((M)<<16)|((X)<<24)|((S)<<29)|((D)<<28)|((L)<<31)|((B)<<1)|(F))
#define NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb, val) \
WRITE_WORD(val, fb, REG_14)
#define NGLE_QUICK_SET_DST_BM_ACCESS(fb, val) \
WRITE_WORD(val, fb, REG_11)
#define NGLE_QUICK_SET_CTL_PLN_REG(fb, val) \
WRITE_WORD(val, fb, REG_12)
#define NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, plnmsk32) \
WRITE_WORD(plnmsk32, fb, REG_13)
#define NGLE_REALLY_SET_IMAGE_FG_COLOR(fb, fg32) \
WRITE_WORD(fg32, fb, REG_35)
#define NGLE_SET_TRANSFERDATA(fb, val) \
WRITE_WORD(val, fb, REG_8)
#define NGLE_SET_DSTXY(fb, val) \
WRITE_WORD(val, fb, REG_6)
#define NGLE_LONG_FB_ADDRESS(fbaddrbase, x, y) ( \
(u32) (fbaddrbase) + \
( (unsigned int) ( (y) << 13 ) | \
(unsigned int) ( (x) << 2 ) ) \
)
#define NGLE_BINC_SET_DSTADDR(fb, addr) \
WRITE_WORD(addr, fb, REG_3)
#define NGLE_BINC_SET_SRCADDR(fb, addr) \
WRITE_WORD(addr, fb, REG_2)
#define NGLE_BINC_SET_DSTMASK(fb, mask) \
WRITE_WORD(mask, fb, REG_22)
#define NGLE_BINC_WRITE32(fb, data32) \
WRITE_WORD(data32, fb, REG_23)
#define START_COLORMAPLOAD(fb, cmapBltCtlData32) \
WRITE_WORD((cmapBltCtlData32), fb, REG_38)
#define SET_LENXY_START_RECFILL(fb, lenxy) \
WRITE_WORD(lenxy, fb, REG_9)
static void
HYPER_ENABLE_DISABLE_DISPLAY(struct stifb_info *fb, int enable)
{
u32 DregsHypMiscVideo = REG_33;
unsigned int value;
SETUP_HW(fb);
value = READ_WORD(fb, DregsHypMiscVideo);
if (enable)
value |= 0x0A000000;
else
value &= ~0x0A000000;
WRITE_WORD(value, fb, DregsHypMiscVideo);
}
/* BufferNumbers used by SETUP_ATTR_ACCESS() */
#define BUFF0_CMAP0 0x00001e02
#define BUFF1_CMAP0 0x02001e02
#define BUFF1_CMAP3 0x0c001e02
#define ARTIST_CMAP0 0x00000102
#define HYPER_CMAP8 0x00000100
#define HYPER_CMAP24 0x00000800
static void
SETUP_ATTR_ACCESS(struct stifb_info *fb, unsigned BufferNumber)
{
SETUP_HW(fb);
WRITE_WORD(0x2EA0D000, fb, REG_11);
WRITE_WORD(0x23000302, fb, REG_14);
WRITE_WORD(BufferNumber, fb, REG_12);
WRITE_WORD(0xffffffff, fb, REG_8);
}
static void
SET_ATTR_SIZE(struct stifb_info *fb, int width, int height)
{
/* REG_6 seems to have special values when run on a
RDI precisionbook parisc laptop (INTERNAL_EG_DX1024 or
INTERNAL_EG_X1024). The values are:
0x2f0: internal (LCD) & external display enabled
0x2a0: external display only
0x000: zero on standard artist graphic cards
*/
WRITE_WORD(0x00000000, fb, REG_6);
WRITE_WORD((width<<16) | height, fb, REG_9);
WRITE_WORD(0x05000000, fb, REG_6);
WRITE_WORD(0x00040001, fb, REG_9);
}
static void
FINISH_ATTR_ACCESS(struct stifb_info *fb)
{
SETUP_HW(fb);
WRITE_WORD(0x00000000, fb, REG_12);
}
static void
elkSetupPlanes(struct stifb_info *fb)
{
SETUP_RAMDAC(fb);
SETUP_FB(fb);
}
static void
ngleSetupAttrPlanes(struct stifb_info *fb, int BufferNumber)
{
SETUP_ATTR_ACCESS(fb, BufferNumber);
SET_ATTR_SIZE(fb, fb->info.var.xres, fb->info.var.yres);
FINISH_ATTR_ACCESS(fb);
SETUP_FB(fb);
}
static void
rattlerSetupPlanes(struct stifb_info *fb)
{
CRX24_SETUP_RAMDAC(fb);
/* replacement for: SETUP_FB(fb, CRX24_OVERLAY_PLANES); */
WRITE_WORD(0x83000300, fb, REG_14);
SETUP_HW(fb);
WRITE_BYTE(1, fb, REG_16b1);
fb_memset((void*)fb->info.fix.smem_start, 0xff,
fb->info.var.yres*fb->info.fix.line_length);
CRX24_SET_OVLY_MASK(fb);
SETUP_FB(fb);
}
#define HYPER_CMAP_TYPE 0
#define NGLE_CMAP_INDEXED0_TYPE 0
#define NGLE_CMAP_OVERLAY_TYPE 3
/* typedef of LUT (Colormap) BLT Control Register */
typedef union /* Note assumption that fields are packed left-to-right */
{ u32 all;
struct
{
unsigned enable : 1;
unsigned waitBlank : 1;
unsigned reserved1 : 4;
unsigned lutOffset : 10; /* Within destination LUT */
unsigned lutType : 2; /* Cursor, image, overlay */
unsigned reserved2 : 4;
unsigned length : 10;
} fields;
} NgleLutBltCtl;
#if 0
static NgleLutBltCtl
setNgleLutBltCtl(struct stifb_info *fb, int offsetWithinLut, int length)
{
NgleLutBltCtl lutBltCtl;
/* set enable, zero reserved fields */
lutBltCtl.all = 0x80000000;
lutBltCtl.fields.length = length;
switch (fb->id)
{
case S9000_ID_A1439A: /* CRX24 */
if (fb->var.bits_per_pixel == 8) {
lutBltCtl.fields.lutType = NGLE_CMAP_OVERLAY_TYPE;
lutBltCtl.fields.lutOffset = 0;
} else {
lutBltCtl.fields.lutType = NGLE_CMAP_INDEXED0_TYPE;
lutBltCtl.fields.lutOffset = 0 * 256;
}
break;
case S9000_ID_ARTIST:
lutBltCtl.fields.lutType = NGLE_CMAP_INDEXED0_TYPE;
lutBltCtl.fields.lutOffset = 0 * 256;
break;
default:
lutBltCtl.fields.lutType = NGLE_CMAP_INDEXED0_TYPE;
lutBltCtl.fields.lutOffset = 0;
break;
}
/* Offset points to start of LUT. Adjust for within LUT */
lutBltCtl.fields.lutOffset += offsetWithinLut;
return lutBltCtl;
}
#endif
static NgleLutBltCtl
setHyperLutBltCtl(struct stifb_info *fb, int offsetWithinLut, int length)
{
NgleLutBltCtl lutBltCtl;
/* set enable, zero reserved fields */
lutBltCtl.all = 0x80000000;
lutBltCtl.fields.length = length;
lutBltCtl.fields.lutType = HYPER_CMAP_TYPE;
/* Expect lutIndex to be 0 or 1 for image cmaps, 2 or 3 for overlay cmaps */
if (fb->info.var.bits_per_pixel == 8)
lutBltCtl.fields.lutOffset = 2 * 256;
else
lutBltCtl.fields.lutOffset = 0 * 256;
/* Offset points to start of LUT. Adjust for within LUT */
lutBltCtl.fields.lutOffset += offsetWithinLut;
return lutBltCtl;
}
static void hyperUndoITE(struct stifb_info *fb)
{
int nFreeFifoSlots = 0;
u32 fbAddr;
NGLE_LOCK(fb);
GET_FIFO_SLOTS(fb, nFreeFifoSlots, 1);
WRITE_WORD(0xffffffff, fb, REG_32);
/* Write overlay transparency mask so only entry 255 is transparent */
/* Hardware setup for full-depth write to "magic" location */
GET_FIFO_SLOTS(fb, nFreeFifoSlots, 7);
NGLE_QUICK_SET_DST_BM_ACCESS(fb,
BA(IndexedDcd, Otc04, Ots08, AddrLong,
BAJustPoint(0), BINovly, BAIndexBase(0)));
NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb,
IBOvals(RopSrc, MaskAddrOffset(0),
BitmapExtent08, StaticReg(0),
DataDynamic, MaskOtc, BGx(0), FGx(0)));
/* Now prepare to write to the "magic" location */
fbAddr = NGLE_LONG_FB_ADDRESS(0, 1532, 0);
NGLE_BINC_SET_DSTADDR(fb, fbAddr);
NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, 0xffffff);
NGLE_BINC_SET_DSTMASK(fb, 0xffffffff);
/* Finally, write a zero to clear the mask */
NGLE_BINC_WRITE32(fb, 0);
NGLE_UNLOCK(fb);
}
static void
ngleDepth8_ClearImagePlanes(struct stifb_info *fb)
{
/* FIXME! */
}
static void
ngleDepth24_ClearImagePlanes(struct stifb_info *fb)
{
/* FIXME! */
}
static void
ngleResetAttrPlanes(struct stifb_info *fb, unsigned int ctlPlaneReg)
{
int nFreeFifoSlots = 0;
u32 packed_dst;
u32 packed_len;
NGLE_LOCK(fb);
GET_FIFO_SLOTS(fb, nFreeFifoSlots, 4);
NGLE_QUICK_SET_DST_BM_ACCESS(fb,
BA(IndexedDcd, Otc32, OtsIndirect,
AddrLong, BAJustPoint(0),
BINattr, BAIndexBase(0)));
NGLE_QUICK_SET_CTL_PLN_REG(fb, ctlPlaneReg);
NGLE_SET_TRANSFERDATA(fb, 0xffffffff);
NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb,
IBOvals(RopSrc, MaskAddrOffset(0),
BitmapExtent08, StaticReg(1),
DataDynamic, MaskOtc,
BGx(0), FGx(0)));
packed_dst = 0;
packed_len = (fb->info.var.xres << 16) | fb->info.var.yres;
GET_FIFO_SLOTS(fb, nFreeFifoSlots, 2);
NGLE_SET_DSTXY(fb, packed_dst);
SET_LENXY_START_RECFILL(fb, packed_len);
/*
* In order to work around an ELK hardware problem (Buffy doesn't
* always flush it's buffers when writing to the attribute
* planes), at least 4 pixels must be written to the attribute
* planes starting at (X == 1280) and (Y != to the last Y written
* by BIF):
*/
if (fb->id == S9000_ID_A1659A) { /* ELK_DEVICE_ID */
/* It's safe to use scanline zero: */
packed_dst = (1280 << 16);
GET_FIFO_SLOTS(fb, nFreeFifoSlots, 2);
NGLE_SET_DSTXY(fb, packed_dst);
packed_len = (4 << 16) | 1;
SET_LENXY_START_RECFILL(fb, packed_len);
} /* ELK Hardware Kludge */
/**** Finally, set the Control Plane Register back to zero: ****/
GET_FIFO_SLOTS(fb, nFreeFifoSlots, 1);
NGLE_QUICK_SET_CTL_PLN_REG(fb, 0);
NGLE_UNLOCK(fb);
}
static void
ngleClearOverlayPlanes(struct stifb_info *fb, int mask, int data)
{
int nFreeFifoSlots = 0;
u32 packed_dst;
u32 packed_len;
NGLE_LOCK(fb);
/* Hardware setup */
GET_FIFO_SLOTS(fb, nFreeFifoSlots, 8);
NGLE_QUICK_SET_DST_BM_ACCESS(fb,
BA(IndexedDcd, Otc04, Ots08, AddrLong,
BAJustPoint(0), BINovly, BAIndexBase(0)));
NGLE_SET_TRANSFERDATA(fb, 0xffffffff); /* Write foreground color */
NGLE_REALLY_SET_IMAGE_FG_COLOR(fb, data);
NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, mask);
packed_dst = 0;
packed_len = (fb->info.var.xres << 16) | fb->info.var.yres;
NGLE_SET_DSTXY(fb, packed_dst);
/* Write zeroes to overlay planes */
NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb,
IBOvals(RopSrc, MaskAddrOffset(0),
BitmapExtent08, StaticReg(0),
DataDynamic, MaskOtc, BGx(0), FGx(0)));
SET_LENXY_START_RECFILL(fb, packed_len);
NGLE_UNLOCK(fb);
}
static void
hyperResetPlanes(struct stifb_info *fb, int enable)
{
unsigned int controlPlaneReg;
NGLE_LOCK(fb);
if (IS_24_DEVICE(fb))
if (fb->info.var.bits_per_pixel == 32)
controlPlaneReg = 0x04000F00;
else
controlPlaneReg = 0x00000F00; /* 0x00000800 should be enought, but lets clear all 4 bits */
else
controlPlaneReg = 0x00000F00; /* 0x00000100 should be enought, but lets clear all 4 bits */
switch (enable) {
case ENABLE:
/* clear screen */
if (IS_24_DEVICE(fb))
ngleDepth24_ClearImagePlanes(fb);
else
ngleDepth8_ClearImagePlanes(fb);
/* Paint attribute planes for default case.
* On Hyperdrive, this means all windows using overlay cmap 0. */
ngleResetAttrPlanes(fb, controlPlaneReg);
/* clear overlay planes */
ngleClearOverlayPlanes(fb, 0xff, 255);
/**************************************************
** Also need to counteract ITE settings
**************************************************/
hyperUndoITE(fb);
break;
case DISABLE:
/* clear screen */
if (IS_24_DEVICE(fb))
ngleDepth24_ClearImagePlanes(fb);
else
ngleDepth8_ClearImagePlanes(fb);
ngleResetAttrPlanes(fb, controlPlaneReg);
ngleClearOverlayPlanes(fb, 0xff, 0);
break;
case -1: /* RESET */
hyperUndoITE(fb);
ngleResetAttrPlanes(fb, controlPlaneReg);
break;
}
NGLE_UNLOCK(fb);
}
/* Return pointer to in-memory structure holding ELK device-dependent ROM values. */
static void
ngleGetDeviceRomData(struct stifb_info *fb)
{
#if 0
XXX: FIXME: !!!
int *pBytePerLongDevDepData;/* data byte == LSB */
int *pRomTable;
NgleDevRomData *pPackedDevRomData;
int sizePackedDevRomData = sizeof(*pPackedDevRomData);
char *pCard8;
int i;
char *mapOrigin = NULL;
int romTableIdx;
pPackedDevRomData = fb->ngle_rom;
SETUP_HW(fb);
if (fb->id == S9000_ID_ARTIST) {
pPackedDevRomData->cursor_pipeline_delay = 4;
pPackedDevRomData->video_interleaves = 4;
} else {
/* Get pointer to unpacked byte/long data in ROM */
pBytePerLongDevDepData = fb->sti->regions[NGLEDEVDEPROM_CRT_REGION];
/* Tomcat supports several resolutions: 1280x1024, 1024x768, 640x480 */
if (fb->id == S9000_ID_TOMCAT)
{
/* jump to the correct ROM table */
GET_ROMTABLE_INDEX(romTableIdx);
while (romTableIdx > 0)
{
pCard8 = (Card8 *) pPackedDevRomData;
pRomTable = pBytePerLongDevDepData;
/* Pack every fourth byte from ROM into structure */
for (i = 0; i < sizePackedDevRomData; i++)
{
*pCard8++ = (Card8) (*pRomTable++);
}
pBytePerLongDevDepData = (Card32 *)
((Card8 *) pBytePerLongDevDepData +
pPackedDevRomData->sizeof_ngle_data);
romTableIdx--;
}
}
pCard8 = (Card8 *) pPackedDevRomData;
/* Pack every fourth byte from ROM into structure */
for (i = 0; i < sizePackedDevRomData; i++)
{
*pCard8++ = (Card8) (*pBytePerLongDevDepData++);
}
}
SETUP_FB(fb);
#endif
}
#define HYPERBOWL_MODE_FOR_8_OVER_88_LUT0_NO_TRANSPARENCIES 4
#define HYPERBOWL_MODE01_8_24_LUT0_TRANSPARENT_LUT1_OPAQUE 8
#define HYPERBOWL_MODE01_8_24_LUT0_OPAQUE_LUT1_OPAQUE 10
#define HYPERBOWL_MODE2_8_24 15
/* HCRX specific boot-time initialization */
static void __init
SETUP_HCRX(struct stifb_info *fb)
{
int hyperbowl;
int nFreeFifoSlots = 0;
if (fb->id != S9000_ID_HCRX)
return;
/* Initialize Hyperbowl registers */
GET_FIFO_SLOTS(fb, nFreeFifoSlots, 7);
if (IS_24_DEVICE(fb)) {
hyperbowl = (fb->info.var.bits_per_pixel == 32) ?
HYPERBOWL_MODE01_8_24_LUT0_TRANSPARENT_LUT1_OPAQUE :
HYPERBOWL_MODE01_8_24_LUT0_OPAQUE_LUT1_OPAQUE;
/* First write to Hyperbowl must happen twice (bug) */
WRITE_WORD(hyperbowl, fb, REG_40);
WRITE_WORD(hyperbowl, fb, REG_40);
WRITE_WORD(HYPERBOWL_MODE2_8_24, fb, REG_39);
WRITE_WORD(0x014c0148, fb, REG_42); /* Set lut 0 to be the direct color */
WRITE_WORD(0x404c4048, fb, REG_43);
WRITE_WORD(0x034c0348, fb, REG_44);
WRITE_WORD(0x444c4448, fb, REG_45);
} else {
hyperbowl = HYPERBOWL_MODE_FOR_8_OVER_88_LUT0_NO_TRANSPARENCIES;
/* First write to Hyperbowl must happen twice (bug) */
WRITE_WORD(hyperbowl, fb, REG_40);
WRITE_WORD(hyperbowl, fb, REG_40);
WRITE_WORD(0x00000000, fb, REG_42);
WRITE_WORD(0x00000000, fb, REG_43);
WRITE_WORD(0x00000000, fb, REG_44);
WRITE_WORD(0x444c4048, fb, REG_45);
}
}
/* ------------------- driver specific functions --------------------------- */
static int
stifb_setcolreg(u_int regno, u_int red, u_int green,
u_int blue, u_int transp, struct fb_info *info)
{
struct stifb_info *fb = (struct stifb_info *) info;
u32 color;
if (regno >= NR_PALETTE)
return 1;
red >>= 8;
green >>= 8;
blue >>= 8;
DEBUG_OFF();
START_IMAGE_COLORMAP_ACCESS(fb);
if (unlikely(fb->info.var.grayscale)) {
/* gray = 0.30*R + 0.59*G + 0.11*B */
color = ((red * 77) +
(green * 151) +
(blue * 28)) >> 8;
} else {
color = ((red << 16) |
(green << 8) |
(blue));
}
if (fb->info.fix.visual == FB_VISUAL_DIRECTCOLOR) {
struct fb_var_screeninfo *var = &fb->info.var;
if (regno < 16)
((u32 *)fb->info.pseudo_palette)[regno] =
regno << var->red.offset |
regno << var->green.offset |
regno << var->blue.offset;
}
WRITE_IMAGE_COLOR(fb, regno, color);
if (fb->id == S9000_ID_HCRX) {
NgleLutBltCtl lutBltCtl;
lutBltCtl = setHyperLutBltCtl(fb,
0, /* Offset w/i LUT */
256); /* Load entire LUT */
NGLE_BINC_SET_SRCADDR(fb,
NGLE_LONG_FB_ADDRESS(0, 0x100, 0));
/* 0x100 is same as used in WRITE_IMAGE_COLOR() */
START_COLORMAPLOAD(fb, lutBltCtl.all);
SETUP_FB(fb);
} else {
/* cleanup colormap hardware */
FINISH_IMAGE_COLORMAP_ACCESS(fb);
}
DEBUG_ON();
return 0;
}
static int
stifb_blank(int blank_mode, struct fb_info *info)
{
struct stifb_info *fb = (struct stifb_info *) info;
int enable = (blank_mode == 0) ? ENABLE : DISABLE;
switch (fb->id) {
case S9000_ID_A1439A:
CRX24_ENABLE_DISABLE_DISPLAY(fb, enable);
break;
case CRT_ID_VISUALIZE_EG:
case S9000_ID_ARTIST:
ARTIST_ENABLE_DISABLE_DISPLAY(fb, enable);
break;
case S9000_ID_HCRX:
HYPER_ENABLE_DISABLE_DISPLAY(fb, enable);
break;
case S9000_ID_A1659A: /* fall through */
case S9000_ID_TIMBER:
case CRX24_OVERLAY_PLANES:
default:
ENABLE_DISABLE_DISPLAY(fb, enable);
break;
}
SETUP_FB(fb);
return 0;
}
static void __init
stifb_init_display(struct stifb_info *fb)
{
int id = fb->id;
SETUP_FB(fb);
/* HCRX specific initialization */
SETUP_HCRX(fb);
/*
if (id == S9000_ID_HCRX)
hyperInitSprite(fb);
else
ngleInitSprite(fb);
*/
/* Initialize the image planes. */
switch (id) {
case S9000_ID_HCRX:
hyperResetPlanes(fb, ENABLE);
break;
case S9000_ID_A1439A:
rattlerSetupPlanes(fb);
break;
case S9000_ID_A1659A:
case S9000_ID_ARTIST:
case CRT_ID_VISUALIZE_EG:
elkSetupPlanes(fb);
break;
}
/* Clear attribute planes on non HCRX devices. */
switch (id) {
case S9000_ID_A1659A:
case S9000_ID_A1439A:
if (fb->info.var.bits_per_pixel == 32)
ngleSetupAttrPlanes(fb, BUFF1_CMAP3);
else {
ngleSetupAttrPlanes(fb, BUFF1_CMAP0);
}
if (id == S9000_ID_A1439A)
ngleClearOverlayPlanes(fb, 0xff, 0);
break;
case S9000_ID_ARTIST:
case CRT_ID_VISUALIZE_EG:
if (fb->info.var.bits_per_pixel == 32)
ngleSetupAttrPlanes(fb, BUFF1_CMAP3);
else {
ngleSetupAttrPlanes(fb, ARTIST_CMAP0);
}
break;
}
stifb_blank(0, (struct fb_info *)fb); /* 0=enable screen */
SETUP_FB(fb);
}
/* ------------ Interfaces to hardware functions ------------ */
static struct fb_ops stifb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = stifb_setcolreg,
.fb_blank = stifb_blank,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
};
/*
* Initialization
*/
int __init
stifb_init_fb(struct sti_struct *sti, int bpp_pref)
{
struct fb_fix_screeninfo *fix;
struct fb_var_screeninfo *var;
struct stifb_info *fb;
struct fb_info *info;
unsigned long sti_rom_address;
char *dev_name;
int bpp, xres, yres;
fb = kzalloc(sizeof(*fb), GFP_ATOMIC);
if (!fb) {
printk(KERN_ERR "stifb: Could not allocate stifb structure\n");
return -ENODEV;
}
info = &fb->info;
/* set struct to a known state */
fix = &info->fix;
var = &info->var;
fb->sti = sti;
/* store upper 32bits of the graphics id */
fb->id = fb->sti->graphics_id[0];
/* only supported cards are allowed */
switch (fb->id) {
case CRT_ID_VISUALIZE_EG:
/* Visualize cards can run either in "double buffer" or
"standard" mode. Depending on the mode, the card reports
a different device name, e.g. "INTERNAL_EG_DX1024" in double
buffer mode and "INTERNAL_EG_X1024" in standard mode.
Since this driver only supports standard mode, we check
if the device name contains the string "DX" and tell the
user how to reconfigure the card. */
if (strstr(sti->outptr.dev_name, "DX")) {
printk(KERN_WARNING "WARNING: stifb framebuffer driver does not "
"support '%s' in double-buffer mode.\n"
KERN_WARNING "WARNING: Please disable the double-buffer mode "
"in IPL menu (the PARISC-BIOS).\n",
sti->outptr.dev_name);
goto out_err0;
}
/* fall though */
case S9000_ID_ARTIST:
case S9000_ID_HCRX:
case S9000_ID_TIMBER:
case S9000_ID_A1659A:
case S9000_ID_A1439A:
break;
default:
printk(KERN_WARNING "stifb: '%s' (id: 0x%08x) not supported.\n",
sti->outptr.dev_name, fb->id);
goto out_err0;
}
/* default to 8 bpp on most graphic chips */
bpp = 8;
xres = sti_onscreen_x(fb->sti);
yres = sti_onscreen_y(fb->sti);
ngleGetDeviceRomData(fb);
/* get (virtual) io region base addr */
fix->mmio_start = REGION_BASE(fb,2);
fix->mmio_len = 0x400000;
/* Reject any device not in the NGLE family */
switch (fb->id) {
case S9000_ID_A1659A: /* CRX/A1659A */
break;
case S9000_ID_ELM: /* GRX, grayscale but else same as A1659A */
var->grayscale = 1;
fb->id = S9000_ID_A1659A;
break;
case S9000_ID_TIMBER: /* HP9000/710 Any (may be a grayscale device) */
dev_name = fb->sti->outptr.dev_name;
if (strstr(dev_name, "GRAYSCALE") ||
strstr(dev_name, "Grayscale") ||
strstr(dev_name, "grayscale"))
var->grayscale = 1;
break;
case S9000_ID_TOMCAT: /* Dual CRX, behaves else like a CRX */
/* FIXME: TomCat supports two heads:
* fb.iobase = REGION_BASE(fb_info,3);
* fb.screen_base = ioremap_nocache(REGION_BASE(fb_info,2),xxx);
* for now we only support the left one ! */
xres = fb->ngle_rom.x_size_visible;
yres = fb->ngle_rom.y_size_visible;
fb->id = S9000_ID_A1659A;
break;
case S9000_ID_A1439A: /* CRX24/A1439A */
bpp = 32;
break;
case S9000_ID_HCRX: /* Hyperdrive/HCRX */
memset(&fb->ngle_rom, 0, sizeof(fb->ngle_rom));
if ((fb->sti->regions_phys[0] & 0xfc000000) ==
(fb->sti->regions_phys[2] & 0xfc000000))
sti_rom_address = F_EXTEND(fb->sti->regions_phys[0]);
else
sti_rom_address = F_EXTEND(fb->sti->regions_phys[1]);
fb->deviceSpecificConfig = gsc_readl(sti_rom_address);
if (IS_24_DEVICE(fb)) {
if (bpp_pref == 8 || bpp_pref == 32)
bpp = bpp_pref;
else
bpp = 32;
} else
bpp = 8;
READ_WORD(fb, REG_15);
SETUP_HW(fb);
break;
case CRT_ID_VISUALIZE_EG:
case S9000_ID_ARTIST: /* Artist */
break;
default:
#ifdef FALLBACK_TO_1BPP
printk(KERN_WARNING
"stifb: Unsupported graphics card (id=0x%08x) "
"- now trying 1bpp mode instead\n",
fb->id);
bpp = 1; /* default to 1 bpp */
break;
#else
printk(KERN_WARNING
"stifb: Unsupported graphics card (id=0x%08x) "
"- skipping.\n",
fb->id);
goto out_err0;
#endif
}
/* get framebuffer physical and virtual base addr & len (64bit ready) */
fix->smem_start = F_EXTEND(fb->sti->regions_phys[1]);
fix->smem_len = fb->sti->regions[1].region_desc.length * 4096;
fix->line_length = (fb->sti->glob_cfg->total_x * bpp) / 8;
if (!fix->line_length)
fix->line_length = 2048; /* default */
/* limit fbsize to max visible screen size */
if (fix->smem_len > yres*fix->line_length)
fix->smem_len = yres*fix->line_length;
fix->accel = FB_ACCEL_NONE;
switch (bpp) {
case 1:
fix->type = FB_TYPE_PLANES; /* well, sort of */
fix->visual = FB_VISUAL_MONO10;
var->red.length = var->green.length = var->blue.length = 1;
break;
case 8:
fix->type = FB_TYPE_PACKED_PIXELS;
fix->visual = FB_VISUAL_PSEUDOCOLOR;
var->red.length = var->green.length = var->blue.length = 8;
break;
case 32:
fix->type = FB_TYPE_PACKED_PIXELS;
fix->visual = FB_VISUAL_DIRECTCOLOR;
var->red.length = var->green.length = var->blue.length = var->transp.length = 8;
var->blue.offset = 0;
var->green.offset = 8;
var->red.offset = 16;
var->transp.offset = 24;
break;
default:
break;
}
var->xres = var->xres_virtual = xres;
var->yres = var->yres_virtual = yres;
var->bits_per_pixel = bpp;
strcpy(fix->id, "stifb");
info->fbops = &stifb_ops;
info->screen_base = ioremap_nocache(REGION_BASE(fb,1), fix->smem_len);
info->screen_size = fix->smem_len;
info->flags = FBINFO_DEFAULT;
info->pseudo_palette = &fb->pseudo_palette;
/* This has to been done !!! */
fb_alloc_cmap(&info->cmap, NR_PALETTE, 0);
stifb_init_display(fb);
if (!request_mem_region(fix->smem_start, fix->smem_len, "stifb fb")) {
printk(KERN_ERR "stifb: cannot reserve fb region 0x%04lx-0x%04lx\n",
fix->smem_start, fix->smem_start+fix->smem_len);
goto out_err1;
}
if (!request_mem_region(fix->mmio_start, fix->mmio_len, "stifb mmio")) {
printk(KERN_ERR "stifb: cannot reserve sti mmio region 0x%04lx-0x%04lx\n",
fix->mmio_start, fix->mmio_start+fix->mmio_len);
goto out_err2;
}
if (register_framebuffer(&fb->info) < 0)
goto out_err3;
sti->info = info; /* save for unregister_framebuffer() */
printk(KERN_INFO
"fb%d: %s %dx%d-%d frame buffer device, %s, id: %04x, mmio: 0x%04lx\n",
fb->info.node,
fix->id,
var->xres,
var->yres,
var->bits_per_pixel,
sti->outptr.dev_name,
fb->id,
fix->mmio_start);
return 0;
out_err3:
release_mem_region(fix->mmio_start, fix->mmio_len);
out_err2:
release_mem_region(fix->smem_start, fix->smem_len);
out_err1:
iounmap(info->screen_base);
fb_dealloc_cmap(&info->cmap);
out_err0:
kfree(fb);
return -ENXIO;
}
static int stifb_disabled __initdata;
int __init
stifb_setup(char *options);
int __init
stifb_init(void)
{
struct sti_struct *sti;
struct sti_struct *def_sti;
int i;
#ifndef MODULE
char *option = NULL;
if (fb_get_options("stifb", &option))
return -ENODEV;
stifb_setup(option);
#endif
if (stifb_disabled) {
printk(KERN_INFO "stifb: disabled by \"stifb=off\" kernel parameter\n");
return -ENXIO;
}
def_sti = sti_get_rom(0);
if (def_sti) {
for (i = 1; i <= MAX_STI_ROMS; i++) {
sti = sti_get_rom(i);
if (!sti)
break;
if (sti == def_sti) {
stifb_init_fb(sti, stifb_bpp_pref[i - 1]);
break;
}
}
}
for (i = 1; i <= MAX_STI_ROMS; i++) {
sti = sti_get_rom(i);
if (!sti)
break;
if (sti == def_sti)
continue;
stifb_init_fb(sti, stifb_bpp_pref[i - 1]);
}
return 0;
}
/*
* Cleanup
*/
static void __exit
stifb_cleanup(void)
{
struct sti_struct *sti;
int i;
for (i = 1; i <= MAX_STI_ROMS; i++) {
sti = sti_get_rom(i);
if (!sti)
break;
if (sti->info) {
struct fb_info *info = sti->info;
unregister_framebuffer(sti->info);
release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
release_mem_region(info->fix.smem_start, info->fix.smem_len);
if (info->screen_base)
iounmap(info->screen_base);
fb_dealloc_cmap(&info->cmap);
kfree(info);
}
sti->info = NULL;
}
}
int __init
stifb_setup(char *options)
{
int i;
if (!options || !*options)
return 1;
if (strncmp(options, "off", 3) == 0) {
stifb_disabled = 1;
options += 3;
}
if (strncmp(options, "bpp", 3) == 0) {
options += 3;
for (i = 0; i < MAX_STI_ROMS; i++) {
if (*options++ != ':')
break;
stifb_bpp_pref[i] = simple_strtoul(options, &options, 10);
}
}
return 1;
}
__setup("stifb=", stifb_setup);
module_init(stifb_init);
module_exit(stifb_cleanup);
MODULE_AUTHOR("Helge Deller <deller@gmx.de>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>");
MODULE_DESCRIPTION("Framebuffer driver for HP's NGLE series graphics cards in HP PARISC machines");
MODULE_LICENSE("GPL v2");
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