diff options
Diffstat (limited to 'drivers/video/fbdev/stifb.c')
| -rw-r--r-- | drivers/video/fbdev/stifb.c | 1526 |
1 files changed, 1526 insertions, 0 deletions
diff --git a/drivers/video/fbdev/stifb.c b/drivers/video/fbdev/stifb.c new file mode 100644 index 000000000..63f517833 --- /dev/null +++ b/drivers/video/fbdev/stifb.c @@ -0,0 +1,1526 @@ +/* + * 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 <linux/io.h> + +#include <asm/grfioctl.h> /* for HP-UX compatibility */ +#include <linux/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_7 0x000804 +#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_24 0x000808 +#define REG_25 0x000b00 +#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", \ + __func__, 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", \ + __func__, 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) + +#define SETUP_COPYAREA(fb) \ + WRITE_BYTE(0, fb, REG_16b1) + +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) +{ + int saved_id, y; + + /* Write RAMDAC pixel read mask register so all overlay + * planes are display-enabled. (CRX24 uses Bt462 pixel + * read mask register for overlay planes, not image planes). + */ + CRX24_SETUP_RAMDAC(fb); + + /* change fb->id temporarily to fool SETUP_FB() */ + saved_id = fb->id; + fb->id = CRX24_OVERLAY_PLANES; + SETUP_FB(fb); + fb->id = saved_id; + + for (y = 0; y < fb->info.var.yres; ++y) + fb_memset(fb->info.screen_base + y * fb->info.fix.line_length, + 0xff, fb->info.var.xres * fb->info.var.bits_per_pixel/8); + + 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 enough, but lets clear all 4 bits */ + else + controlPlaneReg = 0x00000F00; /* 0x00000100 should be enough, 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_check_var(struct fb_var_screeninfo *var, struct fb_info *info) +{ + struct stifb_info *fb = container_of(info, struct stifb_info, info); + + if (var->xres != fb->info.var.xres || + var->yres != fb->info.var.yres || + var->bits_per_pixel != fb->info.var.bits_per_pixel) + return -EINVAL; + + var->xres_virtual = var->xres; + var->yres_virtual = var->yres; + var->xoffset = 0; + var->yoffset = 0; + var->grayscale = fb->info.var.grayscale; + var->red.length = fb->info.var.red.length; + var->green.length = fb->info.var.green.length; + var->blue.length = fb->info.var.blue.length; + + return 0; +} + +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 = container_of(info, 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 = container_of(info, 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: + case S9000_ID_TIMBER: + case CRX24_OVERLAY_PLANES: + default: + ENABLE_DISABLE_DISPLAY(fb, enable); + break; + } + + SETUP_FB(fb); + return 0; +} + +static void +stifb_copyarea(struct fb_info *info, const struct fb_copyarea *area) +{ + struct stifb_info *fb = container_of(info, struct stifb_info, info); + + SETUP_COPYAREA(fb); + + SETUP_HW(fb); + if (fb->info.var.bits_per_pixel == 32) { + WRITE_WORD(0xBBA0A000, fb, REG_10); + + NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, 0xffffffff); + } else { + WRITE_WORD(fb->id == S9000_ID_HCRX ? 0x13a02000 : 0x13a01000, fb, REG_10); + + NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, 0xff); + } + + NGLE_QUICK_SET_IMAGE_BITMAP_OP(fb, + IBOvals(RopSrc, MaskAddrOffset(0), + BitmapExtent08, StaticReg(1), + DataDynamic, MaskOtc, BGx(0), FGx(0))); + + WRITE_WORD(((area->sx << 16) | area->sy), fb, REG_24); + WRITE_WORD(((area->width << 16) | area->height), fb, REG_7); + WRITE_WORD(((area->dx << 16) | area->dy), fb, REG_25); + + SETUP_FB(fb); +} + +#define ARTIST_VRAM_SIZE 0x000804 +#define ARTIST_VRAM_SRC 0x000808 +#define ARTIST_VRAM_SIZE_TRIGGER_WINFILL 0x000a04 +#define ARTIST_VRAM_DEST_TRIGGER_BLOCKMOVE 0x000b00 +#define ARTIST_SRC_BM_ACCESS 0x018008 +#define ARTIST_FGCOLOR 0x018010 +#define ARTIST_BGCOLOR 0x018014 +#define ARTIST_BITMAP_OP 0x01801c + +static void +stifb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) +{ + struct stifb_info *fb = container_of(info, struct stifb_info, info); + + if (rect->rop != ROP_COPY || + (fb->id == S9000_ID_HCRX && fb->info.var.bits_per_pixel == 32)) + return cfb_fillrect(info, rect); + + SETUP_HW(fb); + + if (fb->info.var.bits_per_pixel == 32) { + WRITE_WORD(0xBBA0A000, fb, REG_10); + + NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, 0xffffffff); + } else { + WRITE_WORD(fb->id == S9000_ID_HCRX ? 0x13a02000 : 0x13a01000, fb, REG_10); + + NGLE_REALLY_SET_IMAGE_PLANEMASK(fb, 0xff); + } + + WRITE_WORD(0x03000300, fb, ARTIST_BITMAP_OP); + WRITE_WORD(0x2ea01000, fb, ARTIST_SRC_BM_ACCESS); + NGLE_QUICK_SET_DST_BM_ACCESS(fb, 0x2ea01000); + NGLE_REALLY_SET_IMAGE_FG_COLOR(fb, rect->color); + WRITE_WORD(0, fb, ARTIST_BGCOLOR); + + NGLE_SET_DSTXY(fb, (rect->dx << 16) | (rect->dy)); + SET_LENXY_START_RECFILL(fb, (rect->width << 16) | (rect->height)); + + SETUP_FB(fb); +} + +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 const struct fb_ops stifb_ops = { + .owner = THIS_MODULE, + .fb_check_var = stifb_check_var, + .fb_setcolreg = stifb_setcolreg, + .fb_blank = stifb_blank, + .fb_fillrect = stifb_fillrect, + .fb_copyarea = stifb_copyarea, + .fb_imageblit = cfb_imageblit, +}; + + +/* + * Initialization + */ + +static 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 modestr[32]; + char *dev_name; + int bpp, xres, yres; + + fb = kzalloc(sizeof(*fb), GFP_ATOMIC); + if (!fb) + return -ENOMEM; + + info = &fb->info; + + /* set struct to a known state */ + fix = &info->fix; + var = &info->var; + + fb->sti = sti; + dev_name = sti->sti_data->inq_outptr.dev_name; + /* 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(dev_name, "DX")) { + printk(KERN_WARNING +"WARNING: stifb framebuffer driver does not support '%s' in double-buffer mode.\n" +"WARNING: Please disable the double-buffer mode in IPL menu (the PARISC-BIOS).\n", + dev_name); + goto out_err0; + } + fallthrough; + 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", + 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) */ + 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(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 = ALIGN(yres*fix->line_length, 4*1024*1024); + + 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(REGION_BASE(fb,1), fix->smem_len); + if (!info->screen_base) { + printk(KERN_ERR "stifb: failed to map memory\n"); + goto out_err0; + } + info->screen_size = fix->smem_len; + info->flags = FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT; + info->pseudo_palette = &fb->pseudo_palette; + + scnprintf(modestr, sizeof(modestr), "%dx%d-%d", xres, yres, bpp); + fb_find_mode(&info->var, info, modestr, NULL, 0, NULL, bpp); + + /* This has to be done !!! */ + if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0)) + goto out_err1; + 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_err2; + } + + 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_err3; + } + + /* save for primary gfx device detection & unregister_framebuffer() */ + sti->info = info; + if (register_framebuffer(&fb->info) < 0) + goto out_err4; + + fb_info(&fb->info, "%s %dx%d-%d frame buffer device, %s, id: %04x, mmio: 0x%04lx\n", + fix->id, + var->xres, + var->yres, + var->bits_per_pixel, + dev_name, + fb->id, + fix->mmio_start); + + return 0; + + +out_err4: + release_mem_region(fix->mmio_start, fix->mmio_len); +out_err3: + release_mem_region(fix->smem_start, fix->smem_len); +out_err2: + fb_dealloc_cmap(&info->cmap); +out_err1: + iounmap(info->screen_base); +out_err0: + kfree(fb); + sti->info = NULL; + return -ENXIO; +} + +static int stifb_disabled __initdata; + +int __init +stifb_setup(char *options); + +static 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); + framebuffer_release(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"); |