--- /dev/null
+/*
+ * 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", \
+ __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)
+
+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)
+ 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_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: /* 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
+ */
+
+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 *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;
+ 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;
+ }
+ /* 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",
+ 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_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 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;
+ }
+
+ if (register_framebuffer(&fb->info) < 0)
+ goto out_err4;
+
+ sti->info = info; /* save for unregister_framebuffer() */
+
+ 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);
+ 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");
Code Review / kvmfornfv.git / blobdiff