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path: root/drivers/video/cg6.c
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-rw-r--r--drivers/video/cg6.c801
1 files changed, 801 insertions, 0 deletions
diff --git a/drivers/video/cg6.c b/drivers/video/cg6.c
new file mode 100644
index 00000000000..49a2545671d
--- /dev/null
+++ b/drivers/video/cg6.c
@@ -0,0 +1,801 @@
+/* cg6.c: CGSIX (GX, GXplus, TGX) frame buffer driver
+ *
+ * Copyright (C) 2003 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
+ * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
+ *
+ * Driver layout based loosely on tgafb.c, see that file for credits.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+#include <linux/mm.h>
+
+#include <asm/io.h>
+#include <asm/sbus.h>
+#include <asm/oplib.h>
+#include <asm/fbio.h>
+
+#include "sbuslib.h"
+
+/*
+ * Local functions.
+ */
+
+static int cg6_setcolreg(unsigned, unsigned, unsigned, unsigned,
+ unsigned, struct fb_info *);
+static int cg6_blank(int, struct fb_info *);
+
+static void cg6_imageblit(struct fb_info *, const struct fb_image *);
+static void cg6_fillrect(struct fb_info *, const struct fb_fillrect *);
+static int cg6_sync(struct fb_info *);
+static int cg6_mmap(struct fb_info *, struct file *, struct vm_area_struct *);
+static int cg6_ioctl(struct inode *, struct file *, unsigned int,
+ unsigned long, struct fb_info *);
+
+/*
+ * Frame buffer operations
+ */
+
+static struct fb_ops cg6_ops = {
+ .owner = THIS_MODULE,
+ .fb_setcolreg = cg6_setcolreg,
+ .fb_blank = cg6_blank,
+ .fb_fillrect = cg6_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cg6_imageblit,
+ .fb_sync = cg6_sync,
+ .fb_mmap = cg6_mmap,
+ .fb_ioctl = cg6_ioctl,
+ .fb_cursor = soft_cursor,
+};
+
+/* Offset of interesting structures in the OBIO space */
+/*
+ * Brooktree is the video dac and is funny to program on the cg6.
+ * (it's even funnier on the cg3)
+ * The FBC could be the frame buffer control
+ * The FHC could is the frame buffer hardware control.
+ */
+#define CG6_ROM_OFFSET 0x0UL
+#define CG6_BROOKTREE_OFFSET 0x200000UL
+#define CG6_DHC_OFFSET 0x240000UL
+#define CG6_ALT_OFFSET 0x280000UL
+#define CG6_FHC_OFFSET 0x300000UL
+#define CG6_THC_OFFSET 0x301000UL
+#define CG6_FBC_OFFSET 0x700000UL
+#define CG6_TEC_OFFSET 0x701000UL
+#define CG6_RAM_OFFSET 0x800000UL
+
+/* FHC definitions */
+#define CG6_FHC_FBID_SHIFT 24
+#define CG6_FHC_FBID_MASK 255
+#define CG6_FHC_REV_SHIFT 20
+#define CG6_FHC_REV_MASK 15
+#define CG6_FHC_FROP_DISABLE (1 << 19)
+#define CG6_FHC_ROW_DISABLE (1 << 18)
+#define CG6_FHC_SRC_DISABLE (1 << 17)
+#define CG6_FHC_DST_DISABLE (1 << 16)
+#define CG6_FHC_RESET (1 << 15)
+#define CG6_FHC_LITTLE_ENDIAN (1 << 13)
+#define CG6_FHC_RES_MASK (3 << 11)
+#define CG6_FHC_1024 (0 << 11)
+#define CG6_FHC_1152 (1 << 11)
+#define CG6_FHC_1280 (2 << 11)
+#define CG6_FHC_1600 (3 << 11)
+#define CG6_FHC_CPU_MASK (3 << 9)
+#define CG6_FHC_CPU_SPARC (0 << 9)
+#define CG6_FHC_CPU_68020 (1 << 9)
+#define CG6_FHC_CPU_386 (2 << 9)
+#define CG6_FHC_TEST (1 << 8)
+#define CG6_FHC_TEST_X_SHIFT 4
+#define CG6_FHC_TEST_X_MASK 15
+#define CG6_FHC_TEST_Y_SHIFT 0
+#define CG6_FHC_TEST_Y_MASK 15
+
+/* FBC mode definitions */
+#define CG6_FBC_BLIT_IGNORE 0x00000000
+#define CG6_FBC_BLIT_NOSRC 0x00100000
+#define CG6_FBC_BLIT_SRC 0x00200000
+#define CG6_FBC_BLIT_ILLEGAL 0x00300000
+#define CG6_FBC_BLIT_MASK 0x00300000
+
+#define CG6_FBC_VBLANK 0x00080000
+
+#define CG6_FBC_MODE_IGNORE 0x00000000
+#define CG6_FBC_MODE_COLOR8 0x00020000
+#define CG6_FBC_MODE_COLOR1 0x00040000
+#define CG6_FBC_MODE_HRMONO 0x00060000
+#define CG6_FBC_MODE_MASK 0x00060000
+
+#define CG6_FBC_DRAW_IGNORE 0x00000000
+#define CG6_FBC_DRAW_RENDER 0x00008000
+#define CG6_FBC_DRAW_PICK 0x00010000
+#define CG6_FBC_DRAW_ILLEGAL 0x00018000
+#define CG6_FBC_DRAW_MASK 0x00018000
+
+#define CG6_FBC_BWRITE0_IGNORE 0x00000000
+#define CG6_FBC_BWRITE0_ENABLE 0x00002000
+#define CG6_FBC_BWRITE0_DISABLE 0x00004000
+#define CG6_FBC_BWRITE0_ILLEGAL 0x00006000
+#define CG6_FBC_BWRITE0_MASK 0x00006000
+
+#define CG6_FBC_BWRITE1_IGNORE 0x00000000
+#define CG6_FBC_BWRITE1_ENABLE 0x00000800
+#define CG6_FBC_BWRITE1_DISABLE 0x00001000
+#define CG6_FBC_BWRITE1_ILLEGAL 0x00001800
+#define CG6_FBC_BWRITE1_MASK 0x00001800
+
+#define CG6_FBC_BREAD_IGNORE 0x00000000
+#define CG6_FBC_BREAD_0 0x00000200
+#define CG6_FBC_BREAD_1 0x00000400
+#define CG6_FBC_BREAD_ILLEGAL 0x00000600
+#define CG6_FBC_BREAD_MASK 0x00000600
+
+#define CG6_FBC_BDISP_IGNORE 0x00000000
+#define CG6_FBC_BDISP_0 0x00000080
+#define CG6_FBC_BDISP_1 0x00000100
+#define CG6_FBC_BDISP_ILLEGAL 0x00000180
+#define CG6_FBC_BDISP_MASK 0x00000180
+
+#define CG6_FBC_INDEX_MOD 0x00000040
+#define CG6_FBC_INDEX_MASK 0x00000030
+
+/* THC definitions */
+#define CG6_THC_MISC_REV_SHIFT 16
+#define CG6_THC_MISC_REV_MASK 15
+#define CG6_THC_MISC_RESET (1 << 12)
+#define CG6_THC_MISC_VIDEO (1 << 10)
+#define CG6_THC_MISC_SYNC (1 << 9)
+#define CG6_THC_MISC_VSYNC (1 << 8)
+#define CG6_THC_MISC_SYNC_ENAB (1 << 7)
+#define CG6_THC_MISC_CURS_RES (1 << 6)
+#define CG6_THC_MISC_INT_ENAB (1 << 5)
+#define CG6_THC_MISC_INT (1 << 4)
+#define CG6_THC_MISC_INIT 0x9f
+
+/* The contents are unknown */
+struct cg6_tec {
+ volatile int tec_matrix;
+ volatile int tec_clip;
+ volatile int tec_vdc;
+};
+
+struct cg6_thc {
+ uint thc_pad0[512];
+ volatile uint thc_hs; /* hsync timing */
+ volatile uint thc_hsdvs;
+ volatile uint thc_hd;
+ volatile uint thc_vs; /* vsync timing */
+ volatile uint thc_vd;
+ volatile uint thc_refresh;
+ volatile uint thc_misc;
+ uint thc_pad1[56];
+ volatile uint thc_cursxy; /* cursor x,y position (16 bits each) */
+ volatile uint thc_cursmask[32]; /* cursor mask bits */
+ volatile uint thc_cursbits[32]; /* what to show where mask enabled */
+};
+
+struct cg6_fbc {
+ u32 xxx0[1];
+ volatile u32 mode;
+ volatile u32 clip;
+ u32 xxx1[1];
+ volatile u32 s;
+ volatile u32 draw;
+ volatile u32 blit;
+ volatile u32 font;
+ u32 xxx2[24];
+ volatile u32 x0, y0, z0, color0;
+ volatile u32 x1, y1, z1, color1;
+ volatile u32 x2, y2, z2, color2;
+ volatile u32 x3, y3, z3, color3;
+ volatile u32 offx, offy;
+ u32 xxx3[2];
+ volatile u32 incx, incy;
+ u32 xxx4[2];
+ volatile u32 clipminx, clipminy;
+ u32 xxx5[2];
+ volatile u32 clipmaxx, clipmaxy;
+ u32 xxx6[2];
+ volatile u32 fg;
+ volatile u32 bg;
+ volatile u32 alu;
+ volatile u32 pm;
+ volatile u32 pixelm;
+ u32 xxx7[2];
+ volatile u32 patalign;
+ volatile u32 pattern[8];
+ u32 xxx8[432];
+ volatile u32 apointx, apointy, apointz;
+ u32 xxx9[1];
+ volatile u32 rpointx, rpointy, rpointz;
+ u32 xxx10[5];
+ volatile u32 pointr, pointg, pointb, pointa;
+ volatile u32 alinex, aliney, alinez;
+ u32 xxx11[1];
+ volatile u32 rlinex, rliney, rlinez;
+ u32 xxx12[5];
+ volatile u32 liner, lineg, lineb, linea;
+ volatile u32 atrix, atriy, atriz;
+ u32 xxx13[1];
+ volatile u32 rtrix, rtriy, rtriz;
+ u32 xxx14[5];
+ volatile u32 trir, trig, trib, tria;
+ volatile u32 aquadx, aquady, aquadz;
+ u32 xxx15[1];
+ volatile u32 rquadx, rquady, rquadz;
+ u32 xxx16[5];
+ volatile u32 quadr, quadg, quadb, quada;
+ volatile u32 arectx, arecty, arectz;
+ u32 xxx17[1];
+ volatile u32 rrectx, rrecty, rrectz;
+ u32 xxx18[5];
+ volatile u32 rectr, rectg, rectb, recta;
+};
+
+struct bt_regs {
+ volatile u32 addr;
+ volatile u32 color_map;
+ volatile u32 control;
+ volatile u32 cursor;
+};
+
+struct cg6_par {
+ spinlock_t lock;
+ struct bt_regs __iomem *bt;
+ struct cg6_fbc __iomem *fbc;
+ struct cg6_thc __iomem *thc;
+ struct cg6_tec __iomem *tec;
+ volatile u32 __iomem *fhc;
+
+ u32 flags;
+#define CG6_FLAG_BLANKED 0x00000001
+
+ unsigned long physbase;
+ unsigned long fbsize;
+
+ struct sbus_dev *sdev;
+ struct list_head list;
+};
+
+static int cg6_sync(struct fb_info *info)
+{
+ struct cg6_par *par = (struct cg6_par *) info->par;
+ struct cg6_fbc __iomem *fbc = par->fbc;
+ int limit = 10000;
+
+ do {
+ if (!(sbus_readl(&fbc->s) & 0x10000000))
+ break;
+ udelay(10);
+ } while (--limit > 0);
+
+ return 0;
+}
+
+/**
+ * cg6_fillrect - REQUIRED function. Can use generic routines if
+ * non acclerated hardware and packed pixel based.
+ * Draws a rectangle on the screen.
+ *
+ * @info: frame buffer structure that represents a single frame buffer
+ * @rect: structure defining the rectagle and operation.
+ */
+static void cg6_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
+{
+ struct cg6_par *par = (struct cg6_par *) info->par;
+ struct cg6_fbc __iomem *fbc = par->fbc;
+ unsigned long flags;
+ s32 val;
+
+ /* XXX doesn't handle ROP_XOR */
+
+ spin_lock_irqsave(&par->lock, flags);
+ cg6_sync(info);
+ sbus_writel(rect->color, &fbc->fg);
+ sbus_writel(~(u32)0, &fbc->pixelm);
+ sbus_writel(0xea80ff00, &fbc->alu);
+ sbus_writel(0, &fbc->s);
+ sbus_writel(0, &fbc->clip);
+ sbus_writel(~(u32)0, &fbc->pm);
+ sbus_writel(rect->dy, &fbc->arecty);
+ sbus_writel(rect->dx, &fbc->arectx);
+ sbus_writel(rect->dy + rect->height, &fbc->arecty);
+ sbus_writel(rect->dx + rect->width, &fbc->arectx);
+ do {
+ val = sbus_readl(&fbc->draw);
+ } while (val < 0 && (val & 0x20000000));
+ spin_unlock_irqrestore(&par->lock, flags);
+}
+
+/**
+ * cg6_imageblit - REQUIRED function. Can use generic routines if
+ * non acclerated hardware and packed pixel based.
+ * Copies a image from system memory to the screen.
+ *
+ * @info: frame buffer structure that represents a single frame buffer
+ * @image: structure defining the image.
+ */
+static void cg6_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+ struct cg6_par *par = (struct cg6_par *) info->par;
+ struct cg6_fbc __iomem *fbc = par->fbc;
+ const u8 *data = image->data;
+ unsigned long flags;
+ u32 x, y;
+ int i, width;
+
+ if (image->depth > 1) {
+ cfb_imageblit(info, image);
+ return;
+ }
+
+ spin_lock_irqsave(&par->lock, flags);
+
+ cg6_sync(info);
+
+ sbus_writel(image->fg_color, &fbc->fg);
+ sbus_writel(image->bg_color, &fbc->bg);
+ sbus_writel(0x140000, &fbc->mode);
+ sbus_writel(0xe880fc30, &fbc->alu);
+ sbus_writel(~(u32)0, &fbc->pixelm);
+ sbus_writel(0, &fbc->s);
+ sbus_writel(0, &fbc->clip);
+ sbus_writel(0xff, &fbc->pm);
+ sbus_writel(32, &fbc->incx);
+ sbus_writel(0, &fbc->incy);
+
+ x = image->dx;
+ y = image->dy;
+ for (i = 0; i < image->height; i++) {
+ width = image->width;
+
+ while (width >= 32) {
+ u32 val;
+
+ sbus_writel(y, &fbc->y0);
+ sbus_writel(x, &fbc->x0);
+ sbus_writel(x + 32 - 1, &fbc->x1);
+
+ val = ((u32)data[0] << 24) |
+ ((u32)data[1] << 16) |
+ ((u32)data[2] << 8) |
+ ((u32)data[3] << 0);
+ sbus_writel(val, &fbc->font);
+
+ data += 4;
+ x += 32;
+ width -= 32;
+ }
+ if (width) {
+ u32 val;
+
+ sbus_writel(y, &fbc->y0);
+ sbus_writel(x, &fbc->x0);
+ sbus_writel(x + width - 1, &fbc->x1);
+ if (width <= 8) {
+ val = (u32) data[0] << 24;
+ data += 1;
+ } else if (width <= 16) {
+ val = ((u32) data[0] << 24) |
+ ((u32) data[1] << 16);
+ data += 2;
+ } else {
+ val = ((u32) data[0] << 24) |
+ ((u32) data[1] << 16) |
+ ((u32) data[2] << 8);
+ data += 3;
+ }
+ sbus_writel(val, &fbc->font);
+ }
+
+ y += 1;
+ x = image->dx;
+ }
+
+ spin_unlock_irqrestore(&par->lock, flags);
+}
+
+/**
+ * cg6_setcolreg - Optional function. Sets a color register.
+ * @regno: boolean, 0 copy local, 1 get_user() function
+ * @red: frame buffer colormap structure
+ * @green: The green value which can be up to 16 bits wide
+ * @blue: The blue value which can be up to 16 bits wide.
+ * @transp: If supported the alpha value which can be up to 16 bits wide.
+ * @info: frame buffer info structure
+ */
+static int cg6_setcolreg(unsigned regno,
+ unsigned red, unsigned green, unsigned blue,
+ unsigned transp, struct fb_info *info)
+{
+ struct cg6_par *par = (struct cg6_par *) info->par;
+ struct bt_regs __iomem *bt = par->bt;
+ unsigned long flags;
+
+ if (regno >= 256)
+ return 1;
+
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ spin_lock_irqsave(&par->lock, flags);
+
+ sbus_writel((u32)regno << 24, &bt->addr);
+ sbus_writel((u32)red << 24, &bt->color_map);
+ sbus_writel((u32)green << 24, &bt->color_map);
+ sbus_writel((u32)blue << 24, &bt->color_map);
+
+ spin_unlock_irqrestore(&par->lock, flags);
+
+ return 0;
+}
+
+/**
+ * cg6_blank - Optional function. Blanks the display.
+ * @blank_mode: the blank mode we want.
+ * @info: frame buffer structure that represents a single frame buffer
+ */
+static int
+cg6_blank(int blank, struct fb_info *info)
+{
+ struct cg6_par *par = (struct cg6_par *) info->par;
+ struct cg6_thc __iomem *thc = par->thc;
+ unsigned long flags;
+ u32 val;
+
+ spin_lock_irqsave(&par->lock, flags);
+
+ switch (blank) {
+ case FB_BLANK_UNBLANK: /* Unblanking */
+ val = sbus_readl(&thc->thc_misc);
+ val |= CG6_THC_MISC_VIDEO;
+ sbus_writel(val, &thc->thc_misc);
+ par->flags &= ~CG6_FLAG_BLANKED;
+ break;
+
+ case FB_BLANK_NORMAL: /* Normal blanking */
+ case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
+ case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
+ case FB_BLANK_POWERDOWN: /* Poweroff */
+ val = sbus_readl(&thc->thc_misc);
+ val &= ~CG6_THC_MISC_VIDEO;
+ sbus_writel(val, &thc->thc_misc);
+ par->flags |= CG6_FLAG_BLANKED;
+ break;
+ }
+
+ spin_unlock_irqrestore(&par->lock, flags);
+
+ return 0;
+}
+
+static struct sbus_mmap_map cg6_mmap_map[] = {
+ {
+ .voff = CG6_FBC,
+ .poff = CG6_FBC_OFFSET,
+ .size = PAGE_SIZE
+ },
+ {
+ .voff = CG6_TEC,
+ .poff = CG6_TEC_OFFSET,
+ .size = PAGE_SIZE
+ },
+ {
+ .voff = CG6_BTREGS,
+ .poff = CG6_BROOKTREE_OFFSET,
+ .size = PAGE_SIZE
+ },
+ {
+ .voff = CG6_FHC,
+ .poff = CG6_FHC_OFFSET,
+ .size = PAGE_SIZE
+ },
+ {
+ .voff = CG6_THC,
+ .poff = CG6_THC_OFFSET,
+ .size = PAGE_SIZE
+ },
+ {
+ .voff = CG6_ROM,
+ .poff = CG6_ROM_OFFSET,
+ .size = 0x10000
+ },
+ {
+ .voff = CG6_RAM,
+ .poff = CG6_RAM_OFFSET,
+ .size = SBUS_MMAP_FBSIZE(1)
+ },
+ {
+ .voff = CG6_DHC,
+ .poff = CG6_DHC_OFFSET,
+ .size = 0x40000
+ },
+ { .size = 0 }
+};
+
+static int cg6_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
+{
+ struct cg6_par *par = (struct cg6_par *)info->par;
+
+ return sbusfb_mmap_helper(cg6_mmap_map,
+ par->physbase, par->fbsize,
+ par->sdev->reg_addrs[0].which_io,
+ vma);
+}
+
+static int cg6_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+ unsigned long arg, struct fb_info *info)
+{
+ struct cg6_par *par = (struct cg6_par *) info->par;
+
+ return sbusfb_ioctl_helper(cmd, arg, info,
+ FBTYPE_SUNFAST_COLOR, 8, par->fbsize);
+}
+
+/*
+ * Initialisation
+ */
+
+static void
+cg6_init_fix(struct fb_info *info, int linebytes)
+{
+ struct cg6_par *par = (struct cg6_par *)info->par;
+ const char *cg6_cpu_name, *cg6_card_name;
+ u32 conf;
+
+ conf = sbus_readl(par->fhc);
+ switch(conf & CG6_FHC_CPU_MASK) {
+ case CG6_FHC_CPU_SPARC:
+ cg6_cpu_name = "sparc";
+ break;
+ case CG6_FHC_CPU_68020:
+ cg6_cpu_name = "68020";
+ break;
+ default:
+ cg6_cpu_name = "i386";
+ break;
+ };
+ if (((conf >> CG6_FHC_REV_SHIFT) & CG6_FHC_REV_MASK) >= 11) {
+ if (par->fbsize <= 0x100000) {
+ cg6_card_name = "TGX";
+ } else {
+ cg6_card_name = "TGX+";
+ }
+ } else {
+ if (par->fbsize <= 0x100000) {
+ cg6_card_name = "GX";
+ } else {
+ cg6_card_name = "GX+";
+ }
+ }
+
+ sprintf(info->fix.id, "%s %s", cg6_card_name, cg6_cpu_name);
+ info->fix.id[sizeof(info->fix.id)-1] = 0;
+
+ info->fix.type = FB_TYPE_PACKED_PIXELS;
+ info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+
+ info->fix.line_length = linebytes;
+
+ info->fix.accel = FB_ACCEL_SUN_CGSIX;
+}
+
+/* Initialize Brooktree DAC */
+static void cg6_bt_init(struct cg6_par *par)
+{
+ struct bt_regs __iomem *bt = par->bt;
+
+ sbus_writel(0x04 << 24, &bt->addr); /* color planes */
+ sbus_writel(0xff << 24, &bt->control);
+ sbus_writel(0x05 << 24, &bt->addr);
+ sbus_writel(0x00 << 24, &bt->control);
+ sbus_writel(0x06 << 24, &bt->addr); /* overlay plane */
+ sbus_writel(0x73 << 24, &bt->control);
+ sbus_writel(0x07 << 24, &bt->addr);
+ sbus_writel(0x00 << 24, &bt->control);
+}
+
+static void cg6_chip_init(struct fb_info *info)
+{
+ struct cg6_par *par = (struct cg6_par *) info->par;
+ struct cg6_tec __iomem *tec = par->tec;
+ struct cg6_fbc __iomem *fbc = par->fbc;
+ u32 rev, conf, mode, tmp;
+ int i;
+
+ /* Turn off stuff in the Transform Engine. */
+ sbus_writel(0, &tec->tec_matrix);
+ sbus_writel(0, &tec->tec_clip);
+ sbus_writel(0, &tec->tec_vdc);
+
+ /* Take care of bugs in old revisions. */
+ rev = (sbus_readl(par->fhc) >> CG6_FHC_REV_SHIFT) & CG6_FHC_REV_MASK;
+ if (rev < 5) {
+ conf = (sbus_readl(par->fhc) & CG6_FHC_RES_MASK) |
+ CG6_FHC_CPU_68020 | CG6_FHC_TEST |
+ (11 << CG6_FHC_TEST_X_SHIFT) |
+ (11 << CG6_FHC_TEST_Y_SHIFT);
+ if (rev < 2)
+ conf |= CG6_FHC_DST_DISABLE;
+ sbus_writel(conf, par->fhc);
+ }
+
+ /* Set things in the FBC. Bad things appear to happen if we do
+ * back to back store/loads on the mode register, so copy it
+ * out instead. */
+ mode = sbus_readl(&fbc->mode);
+ do {
+ i = sbus_readl(&fbc->s);
+ } while (i & 0x10000000);
+ mode &= ~(CG6_FBC_BLIT_MASK | CG6_FBC_MODE_MASK |
+ CG6_FBC_DRAW_MASK | CG6_FBC_BWRITE0_MASK |
+ CG6_FBC_BWRITE1_MASK | CG6_FBC_BREAD_MASK |
+ CG6_FBC_BDISP_MASK);
+ mode |= (CG6_FBC_BLIT_SRC | CG6_FBC_MODE_COLOR8 |
+ CG6_FBC_DRAW_RENDER | CG6_FBC_BWRITE0_ENABLE |
+ CG6_FBC_BWRITE1_DISABLE | CG6_FBC_BREAD_0 |
+ CG6_FBC_BDISP_0);
+ sbus_writel(mode, &fbc->mode);
+
+ sbus_writel(0, &fbc->clip);
+ sbus_writel(0, &fbc->offx);
+ sbus_writel(0, &fbc->offy);
+ sbus_writel(0, &fbc->clipminx);
+ sbus_writel(0, &fbc->clipminy);
+ sbus_writel(info->var.xres - 1, &fbc->clipmaxx);
+ sbus_writel(info->var.yres - 1, &fbc->clipmaxy);
+
+ /* Disable cursor in Brooktree DAC. */
+ sbus_writel(0x06 << 24, &par->bt->addr);
+ tmp = sbus_readl(&par->bt->control);
+ tmp &= ~(0x03 << 24);
+ sbus_writel(tmp, &par->bt->control);
+}
+
+struct all_info {
+ struct fb_info info;
+ struct cg6_par par;
+ struct list_head list;
+};
+static LIST_HEAD(cg6_list);
+
+static void cg6_init_one(struct sbus_dev *sdev)
+{
+ struct all_info *all;
+ int linebytes;
+
+ all = kmalloc(sizeof(*all), GFP_KERNEL);
+ if (!all) {
+ printk(KERN_ERR "cg6: Cannot allocate memory.\n");
+ return;
+ }
+ memset(all, 0, sizeof(*all));
+
+ INIT_LIST_HEAD(&all->list);
+
+ spin_lock_init(&all->par.lock);
+ all->par.sdev = sdev;
+
+ all->par.physbase = sdev->reg_addrs[0].phys_addr;
+
+ sbusfb_fill_var(&all->info.var, sdev->prom_node, 8);
+ all->info.var.red.length = 8;
+ all->info.var.green.length = 8;
+ all->info.var.blue.length = 8;
+
+ linebytes = prom_getintdefault(sdev->prom_node, "linebytes",
+ all->info.var.xres);
+ all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
+ if (prom_getbool(sdev->prom_node, "dblbuf"))
+ all->par.fbsize *= 4;
+
+ all->par.fbc = sbus_ioremap(&sdev->resource[0], CG6_FBC_OFFSET,
+ 4096, "cgsix fbc");
+ all->par.tec = sbus_ioremap(&sdev->resource[0], CG6_TEC_OFFSET,
+ sizeof(struct cg6_tec), "cgsix tec");
+ all->par.thc = sbus_ioremap(&sdev->resource[0], CG6_THC_OFFSET,
+ sizeof(struct cg6_thc), "cgsix thc");
+ all->par.bt = sbus_ioremap(&sdev->resource[0], CG6_BROOKTREE_OFFSET,
+ sizeof(struct bt_regs), "cgsix dac");
+ all->par.fhc = sbus_ioremap(&sdev->resource[0], CG6_FHC_OFFSET,
+ sizeof(u32), "cgsix fhc");
+
+ all->info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_IMAGEBLIT |
+ FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT;
+ all->info.fbops = &cg6_ops;
+#ifdef CONFIG_SPARC32
+ all->info.screen_base = (char __iomem *)
+ prom_getintdefault(sdev->prom_node, "address", 0);
+#endif
+ if (!all->info.screen_base)
+ all->info.screen_base =
+ sbus_ioremap(&sdev->resource[0], CG6_RAM_OFFSET,
+ all->par.fbsize, "cgsix ram");
+ all->info.par = &all->par;
+
+ all->info.var.accel_flags = FB_ACCELF_TEXT;
+
+ cg6_bt_init(&all->par);
+ cg6_chip_init(&all->info);
+ cg6_blank(0, &all->info);
+
+ if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
+ printk(KERN_ERR "cg6: Could not allocate color map.\n");
+ kfree(all);
+ return;
+ }
+
+ fb_set_cmap(&all->info.cmap, &all->info);
+ cg6_init_fix(&all->info, linebytes);
+
+ if (register_framebuffer(&all->info) < 0) {
+ printk(KERN_ERR "cg6: Could not register framebuffer.\n");
+ fb_dealloc_cmap(&all->info.cmap);
+ kfree(all);
+ return;
+ }
+
+ list_add(&all->list, &cg6_list);
+
+ printk("cg6: CGsix [%s] at %lx:%lx\n",
+ all->info.fix.id,
+ (long) sdev->reg_addrs[0].which_io,
+ (long) sdev->reg_addrs[0].phys_addr);
+}
+
+int __init cg6_init(void)
+{
+ struct sbus_bus *sbus;
+ struct sbus_dev *sdev;
+
+ if (fb_get_options("cg6fb", NULL))
+ return -ENODEV;
+
+ for_all_sbusdev(sdev, sbus) {
+ if (!strcmp(sdev->prom_name, "cgsix") ||
+ !strcmp(sdev->prom_name, "cgthree+"))
+ cg6_init_one(sdev);
+ }
+
+ return 0;
+}
+
+void __exit cg6_exit(void)
+{
+ struct list_head *pos, *tmp;
+
+ list_for_each_safe(pos, tmp, &cg6_list) {
+ struct all_info *all = list_entry(pos, typeof(*all), list);
+
+ unregister_framebuffer(&all->info);
+ fb_dealloc_cmap(&all->info.cmap);
+ kfree(all);
+ }
+}
+
+int __init
+cg6_setup(char *arg)
+{
+ /* No cmdline options yet... */
+ return 0;
+}
+
+module_init(cg6_init);
+
+#ifdef MODULE
+module_exit(cg6_exit);
+#endif
+
+MODULE_DESCRIPTION("framebuffer driver for CGsix chipsets");
+MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-26 16:34:07 +0000