Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 648 insertions, 0 deletions

diff --git a/drivers/video/cg14.c b/drivers/video/cg14.c
new file mode 100644
index 0000000..18e60b9
--- /dev/null
+++ b/drivers/video/cg14.c
@@ -0,0 +1,648 @@
+/* cg14.c: CGFOURTEEN frame buffer driver
+ *
+ * Copyright (C) 2003 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
+ * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ *
+ * 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 cg14_setcolreg(unsigned, unsigned, unsigned, unsigned,
+			 unsigned, struct fb_info *);
+
+static int cg14_mmap(struct fb_info *, struct file *, struct vm_area_struct *);
+static int cg14_ioctl(struct inode *, struct file *, unsigned int,
+		      unsigned long, struct fb_info *);
+static int cg14_pan_display(struct fb_var_screeninfo *, struct fb_info *);
+
+/*
+ *  Frame buffer operations
+ */
+
+static struct fb_ops cg14_ops = {
+	.owner			= THIS_MODULE,
+	.fb_setcolreg		= cg14_setcolreg,
+	.fb_pan_display		= cg14_pan_display,
+	.fb_fillrect		= cfb_fillrect,
+	.fb_copyarea		= cfb_copyarea,
+	.fb_imageblit		= cfb_imageblit,
+	.fb_mmap		= cg14_mmap,
+	.fb_ioctl		= cg14_ioctl,
+	.fb_cursor		= soft_cursor,
+};
+
+#define CG14_MCR_INTENABLE_SHIFT	7
+#define CG14_MCR_INTENABLE_MASK		0x80
+#define CG14_MCR_VIDENABLE_SHIFT	6
+#define CG14_MCR_VIDENABLE_MASK		0x40
+#define CG14_MCR_PIXMODE_SHIFT		4
+#define CG14_MCR_PIXMODE_MASK		0x30
+#define CG14_MCR_TMR_SHIFT		2
+#define CG14_MCR_TMR_MASK		0x0c
+#define CG14_MCR_TMENABLE_SHIFT		1
+#define CG14_MCR_TMENABLE_MASK		0x02
+#define CG14_MCR_RESET_SHIFT		0
+#define CG14_MCR_RESET_MASK		0x01
+#define CG14_REV_REVISION_SHIFT		4
+#define CG14_REV_REVISION_MASK		0xf0
+#define CG14_REV_IMPL_SHIFT		0
+#define CG14_REV_IMPL_MASK		0x0f
+#define CG14_VBR_FRAMEBASE_SHIFT	12
+#define CG14_VBR_FRAMEBASE_MASK		0x00fff000
+#define CG14_VMCR1_SETUP_SHIFT		0
+#define CG14_VMCR1_SETUP_MASK		0x000001ff
+#define CG14_VMCR1_VCONFIG_SHIFT	9
+#define CG14_VMCR1_VCONFIG_MASK		0x00000e00
+#define CG14_VMCR2_REFRESH_SHIFT	0
+#define CG14_VMCR2_REFRESH_MASK		0x00000001
+#define CG14_VMCR2_TESTROWCNT_SHIFT	1
+#define CG14_VMCR2_TESTROWCNT_MASK	0x00000002
+#define CG14_VMCR2_FBCONFIG_SHIFT	2
+#define CG14_VMCR2_FBCONFIG_MASK	0x0000000c
+#define CG14_VCR_REFRESHREQ_SHIFT	0
+#define CG14_VCR_REFRESHREQ_MASK	0x000003ff
+#define CG14_VCR1_REFRESHENA_SHIFT	10
+#define CG14_VCR1_REFRESHENA_MASK	0x00000400
+#define CG14_VCA_CAD_SHIFT		0
+#define CG14_VCA_CAD_MASK		0x000003ff
+#define CG14_VCA_VERS_SHIFT		10
+#define CG14_VCA_VERS_MASK		0x00000c00
+#define CG14_VCA_RAMSPEED_SHIFT		12
+#define CG14_VCA_RAMSPEED_MASK		0x00001000
+#define CG14_VCA_8MB_SHIFT		13
+#define CG14_VCA_8MB_MASK		0x00002000
+
+#define CG14_MCR_PIXMODE_8		0
+#define CG14_MCR_PIXMODE_16		2
+#define CG14_MCR_PIXMODE_32		3
+
+struct cg14_regs{
+	volatile u8 mcr;	/* Master Control Reg */
+	volatile u8 ppr;	/* Packed Pixel Reg */
+	volatile u8 tms[2];	/* Test Mode Status Regs */
+	volatile u8 msr;	/* Master Status Reg */
+	volatile u8 fsr;	/* Fault Status Reg */
+	volatile u8 rev;	/* Revision & Impl */
+	volatile u8 ccr;	/* Clock Control Reg */
+	volatile u32 tmr;	/* Test Mode Read Back */
+	volatile u8 mod;	/* Monitor Operation Data Reg */
+	volatile u8 acr;	/* Aux Control */
+	u8 xxx0[6];
+	volatile u16 hct;	/* Hor Counter */
+	volatile u16 vct;	/* Vert Counter */
+	volatile u16 hbs;	/* Hor Blank Start */
+	volatile u16 hbc;	/* Hor Blank Clear */
+	volatile u16 hss;	/* Hor Sync Start */
+	volatile u16 hsc;	/* Hor Sync Clear */
+	volatile u16 csc;	/* Composite Sync Clear */
+	volatile u16 vbs;	/* Vert Blank Start */
+	volatile u16 vbc;	/* Vert Blank Clear */
+	volatile u16 vss;	/* Vert Sync Start */
+	volatile u16 vsc;	/* Vert Sync Clear */
+	volatile u16 xcs;
+	volatile u16 xcc;
+	volatile u16 fsa;	/* Fault Status Address */
+	volatile u16 adr;	/* Address Registers */
+	u8 xxx1[0xce];
+	volatile u8 pcg[0x100]; /* Pixel Clock Generator */
+	volatile u32 vbr;	/* Frame Base Row */
+	volatile u32 vmcr;	/* VBC Master Control */
+	volatile u32 vcr;	/* VBC refresh */
+	volatile u32 vca;	/* VBC Config */
+};
+
+#define CG14_CCR_ENABLE	0x04
+#define CG14_CCR_SELECT 0x02	/* HW/Full screen */
+
+struct cg14_cursor {
+	volatile u32 cpl0[32];	/* Enable plane 0 */
+	volatile u32 cpl1[32];  /* Color selection plane */
+	volatile u8 ccr;	/* Cursor Control Reg */
+	u8 xxx0[3];
+	volatile u16 cursx;	/* Cursor x,y position */
+	volatile u16 cursy;	/* Cursor x,y position */
+	volatile u32 color0;
+	volatile u32 color1;
+	u32 xxx1[0x1bc];
+	volatile u32 cpl0i[32];	/* Enable plane 0 autoinc */
+	volatile u32 cpl1i[32]; /* Color selection autoinc */
+};
+
+struct cg14_dac {
+	volatile u8 addr;	/* Address Register */
+	u8 xxx0[255];
+	volatile u8 glut;	/* Gamma table */
+	u8 xxx1[255];
+	volatile u8 select;	/* Register Select */
+	u8 xxx2[255];
+	volatile u8 mode;	/* Mode Register */
+};
+
+struct cg14_xlut{
+	volatile u8 x_xlut [256];
+	volatile u8 x_xlutd [256];
+	u8 xxx0[0x600];
+	volatile u8 x_xlut_inc [256];
+	volatile u8 x_xlutd_inc [256];
+};
+
+/* Color look up table (clut) */
+/* Each one of these arrays hold the color lookup table (for 256
+ * colors) for each MDI page (I assume then there should be 4 MDI
+ * pages, I still wonder what they are.  I have seen NeXTStep split
+ * the screen in four parts, while operating in 24 bits mode.  Each
+ * integer holds 4 values: alpha value (transparency channel, thanks
+ * go to John Stone (johns@umr.edu) from OpenBSD), red, green and blue
+ *
+ * I currently use the clut instead of the Xlut
+ */
+struct cg14_clut {
+	u32 c_clut [256];
+	u32 c_clutd [256];    /* i wonder what the 'd' is for */
+	u32 c_clut_inc [256];
+	u32 c_clutd_inc [256];
+};
+
+#define CG14_MMAP_ENTRIES	16
+
+struct cg14_par {
+	spinlock_t		lock;
+	struct cg14_regs	__iomem *regs;
+	struct cg14_clut	__iomem *clut;
+	struct cg14_cursor	__iomem *cursor;
+
+	u32			flags;
+#define CG14_FLAG_BLANKED	0x00000001
+
+	unsigned long		physbase;
+	unsigned long		iospace;
+	unsigned long		fbsize;
+
+	struct sbus_mmap_map	mmap_map[CG14_MMAP_ENTRIES];
+
+	int			mode;
+	int			ramsize;
+	struct sbus_dev		*sdev;
+	struct list_head	list;
+};
+
+static void __cg14_reset(struct cg14_par *par)
+{
+	struct cg14_regs __iomem *regs = par->regs;
+	u8 val;
+
+	val = sbus_readb(&regs->mcr);
+	val &= ~(CG14_MCR_PIXMODE_MASK);
+	sbus_writeb(val, &regs->mcr);
+}
+
+static int cg14_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	struct cg14_par *par = (struct cg14_par *) info->par;
+	unsigned long flags;
+
+	/* We just use this to catch switches out of
+	 * graphics mode.
+	 */
+	spin_lock_irqsave(&par->lock, flags);
+	__cg14_reset(par);
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	if (var->xoffset || var->yoffset || var->vmode)
+		return -EINVAL;
+	return 0;
+}
+
+/**
+ *      cg14_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 cg14_setcolreg(unsigned regno,
+			  unsigned red, unsigned green, unsigned blue,
+			  unsigned transp, struct fb_info *info)
+{
+	struct cg14_par *par = (struct cg14_par *) info->par;
+	struct cg14_clut __iomem *clut = par->clut;
+	unsigned long flags;
+	u32 val;
+
+	if (regno >= 256)
+		return 1;
+
+	red >>= 8;
+	green >>= 8;
+	blue >>= 8;
+	val = (red | (green << 8) | (blue << 16));
+
+	spin_lock_irqsave(&par->lock, flags);
+	sbus_writel(val, &clut->c_clut[regno]);
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	return 0;
+}
+
+static int cg14_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
+{
+	struct cg14_par *par = (struct cg14_par *) info->par;
+
+	return sbusfb_mmap_helper(par->mmap_map,
+				  par->physbase, par->fbsize,
+				  par->iospace, vma);
+}
+
+static int cg14_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+		      unsigned long arg, struct fb_info *info)
+{
+	struct cg14_par *par = (struct cg14_par *) info->par;
+	struct cg14_regs __iomem *regs = par->regs;
+	struct mdi_cfginfo kmdi, __user *mdii;
+	unsigned long flags;
+	int cur_mode, mode, ret = 0;
+
+	switch (cmd) {
+	case MDI_RESET:
+		spin_lock_irqsave(&par->lock, flags);
+		__cg14_reset(par);
+		spin_unlock_irqrestore(&par->lock, flags);
+		break;
+
+	case MDI_GET_CFGINFO:
+		memset(&kmdi, 0, sizeof(kmdi));
+
+		spin_lock_irqsave(&par->lock, flags);
+		kmdi.mdi_type = FBTYPE_MDICOLOR;
+		kmdi.mdi_height = info->var.yres;
+		kmdi.mdi_width = info->var.xres;
+		kmdi.mdi_mode = par->mode;
+		kmdi.mdi_pixfreq = 72; /* FIXME */
+		kmdi.mdi_size = par->ramsize;
+		spin_unlock_irqrestore(&par->lock, flags);
+
+		mdii = (struct mdi_cfginfo __user *) arg;
+		if (copy_to_user(mdii, &kmdi, sizeof(kmdi)))
+			ret = -EFAULT;
+		break;
+
+	case MDI_SET_PIXELMODE:
+		if (get_user(mode, (int __user *) arg)) {
+			ret = -EFAULT;
+			break;
+		}
+
+		spin_lock_irqsave(&par->lock, flags);
+		cur_mode = sbus_readb(&regs->mcr);
+		cur_mode &= ~CG14_MCR_PIXMODE_MASK;
+		switch(mode) {
+		case MDI_32_PIX:
+			cur_mode |= (CG14_MCR_PIXMODE_32 <<
+				     CG14_MCR_PIXMODE_SHIFT);
+			break;
+
+		case MDI_16_PIX:
+			cur_mode |= (CG14_MCR_PIXMODE_16 <<
+				     CG14_MCR_PIXMODE_SHIFT);
+			break;
+
+		case MDI_8_PIX:
+			break;
+
+		default:
+			ret = -ENOSYS;
+			break;
+		};
+		if (!ret) {
+			sbus_writeb(cur_mode, &regs->mcr);
+			par->mode = mode;
+		}
+		spin_unlock_irqrestore(&par->lock, flags);
+		break;
+
+	default:
+		ret = sbusfb_ioctl_helper(cmd, arg, info,
+					  FBTYPE_MDICOLOR, 8, par->fbsize);
+		break;
+	};
+
+	return ret;
+}
+
+/*
+ *  Initialisation
+ */
+
+static void cg14_init_fix(struct fb_info *info, int linebytes)
+{
+	struct cg14_par *par = (struct cg14_par *)info->par;
+	const char *name;
+
+	name = "cgfourteen";
+	if (par->sdev)
+		name = par->sdev->prom_name;
+
+	strlcpy(info->fix.id, name, sizeof(info->fix.id));
+
+	info->fix.type = FB_TYPE_PACKED_PIXELS;
+	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+
+	info->fix.line_length = linebytes;
+
+	info->fix.accel = FB_ACCEL_SUN_CG14;
+}
+
+static struct sbus_mmap_map __cg14_mmap_map[CG14_MMAP_ENTRIES] __initdata = {
+	{
+		.voff	= CG14_REGS,
+		.poff	= 0x80000000,
+		.size	= 0x1000
+	},
+	{
+		.voff	= CG14_XLUT,
+		.poff	= 0x80003000,
+		.size	= 0x1000
+	},
+	{
+		.voff	= CG14_CLUT1,
+		.poff	= 0x80004000,
+		.size	= 0x1000
+	},
+	{
+		.voff	= CG14_CLUT2,
+		.poff	= 0x80005000,
+		.size	= 0x1000
+	},
+	{
+		.voff	= CG14_CLUT3,
+		.poff	= 0x80006000,
+		.size	= 0x1000
+	},
+	{
+		.voff	= CG3_MMAP_OFFSET - 0x7000,
+		.poff	= 0x80000000,
+		.size	= 0x7000
+	},
+	{
+		.voff	= CG3_MMAP_OFFSET,
+		.poff	= 0x00000000,
+		.size	= SBUS_MMAP_FBSIZE(1)
+	},
+	{
+		.voff	= MDI_CURSOR_MAP,
+		.poff	= 0x80001000,
+		.size	= 0x1000
+	},
+	{
+		.voff	= MDI_CHUNKY_BGR_MAP,
+		.poff	= 0x01000000,
+		.size	= 0x400000
+	},
+	{
+		.voff	= MDI_PLANAR_X16_MAP,
+		.poff	= 0x02000000,
+		.size	= 0x200000
+	},
+	{
+		.voff	= MDI_PLANAR_C16_MAP,
+		.poff	= 0x02800000,
+		.size	= 0x200000
+	},
+	{
+		.voff	= MDI_PLANAR_X32_MAP,
+		.poff	= 0x03000000,
+		.size	= 0x100000
+	},
+	{
+		.voff	= MDI_PLANAR_B32_MAP,
+		.poff	= 0x03400000,
+		.size	= 0x100000
+	},
+	{
+		.voff	= MDI_PLANAR_G32_MAP,
+		.poff	= 0x03800000,
+		.size	= 0x100000
+	},
+	{
+		.voff	= MDI_PLANAR_R32_MAP,
+		.poff	= 0x03c00000,
+		.size	= 0x100000
+	},
+	{ .size = 0 }
+};
+
+struct all_info {
+	struct fb_info info;
+	struct cg14_par par;
+	struct list_head list;
+};
+static LIST_HEAD(cg14_list);
+
+static void cg14_init_one(struct sbus_dev *sdev, int node, int parent_node)
+{
+	struct all_info *all;
+	unsigned long phys, rphys;
+	u32 bases[6];
+	int is_8mb, linebytes, i;
+
+	if (!sdev) {
+		if (prom_getproperty(node, "address",
+				     (char *) &bases[0], sizeof(bases)) <= 0
+		    || !bases[0]) {
+			printk(KERN_ERR "cg14: Device is not mapped.\n");
+			return;
+		}
+		if (__get_iospace(bases[0]) != __get_iospace(bases[1])) {
+			printk(KERN_ERR "cg14: I/O spaces don't match.\n");
+			return;
+		}
+	}
+
+	all = kmalloc(sizeof(*all), GFP_KERNEL);
+	if (!all) {
+		printk(KERN_ERR "cg14: Cannot allocate memory.\n");
+		return;
+	}
+	memset(all, 0, sizeof(*all));
+
+	INIT_LIST_HEAD(&all->list);
+
+	spin_lock_init(&all->par.lock);
+
+	sbusfb_fill_var(&all->info.var, node, 8);
+	all->info.var.red.length = 8;
+	all->info.var.green.length = 8;
+	all->info.var.blue.length = 8;
+
+	linebytes = prom_getintdefault(node, "linebytes",
+				       all->info.var.xres);
+	all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
+
+	all->par.sdev = sdev;
+	if (sdev) {
+		rphys = sdev->reg_addrs[0].phys_addr;
+		all->par.physbase = phys = sdev->reg_addrs[1].phys_addr;
+		all->par.iospace = sdev->reg_addrs[0].which_io;
+
+		all->par.regs = sbus_ioremap(&sdev->resource[0], 0,
+				     sizeof(struct cg14_regs),
+				     "cg14 regs");
+		all->par.clut = sbus_ioremap(&sdev->resource[0], CG14_CLUT1,
+				     sizeof(struct cg14_clut),
+				     "cg14 clut");
+		all->par.cursor = sbus_ioremap(&sdev->resource[0], CG14_CURSORREGS,
+				     sizeof(struct cg14_cursor),
+				     "cg14 cursor");
+		all->info.screen_base = sbus_ioremap(&sdev->resource[1], 0,
+				     all->par.fbsize, "cg14 ram");
+	} else {
+		rphys = __get_phys(bases[0]);
+		all->par.physbase = phys = __get_phys(bases[1]);
+		all->par.iospace = __get_iospace(bases[0]);
+		all->par.regs = (struct cg14_regs __iomem *)(unsigned long)bases[0];
+		all->par.clut = (struct cg14_clut __iomem *)((unsigned long)bases[0] +
+						     CG14_CLUT1);
+		all->par.cursor =
+			(struct cg14_cursor __iomem *)((unsigned long)bases[0] +
+					       CG14_CURSORREGS);
+
+		all->info.screen_base = (char __iomem *)(unsigned long)bases[1];
+	}
+
+	prom_getproperty(node, "reg", (char *) &bases[0], sizeof(bases));
+	is_8mb = (bases[5] == 0x800000);
+
+	if (sizeof(all->par.mmap_map) != sizeof(__cg14_mmap_map)) {
+		extern void __cg14_mmap_sized_wrongly(void);
+
+		__cg14_mmap_sized_wrongly();
+	}
+		
+	memcpy(&all->par.mmap_map, &__cg14_mmap_map, sizeof(all->par.mmap_map));
+	for (i = 0; i < CG14_MMAP_ENTRIES; i++) {
+		struct sbus_mmap_map *map = &all->par.mmap_map[i];
+
+		if (!map->size)
+			break;
+		if (map->poff & 0x80000000)
+			map->poff = (map->poff & 0x7fffffff) + rphys - phys;
+		if (is_8mb &&
+		    map->size >= 0x100000 &&
+		    map->size <= 0x400000)
+			map->size *= 2;
+	}
+
+	all->par.mode = MDI_8_PIX;
+	all->par.ramsize = (is_8mb ? 0x800000 : 0x400000);
+
+	all->info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+	all->info.fbops = &cg14_ops;
+	all->info.par = &all->par;
+
+	__cg14_reset(&all->par);
+
+	if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
+		printk(KERN_ERR "cg14: Could not allocate color map.\n");
+		kfree(all);
+		return;
+	}
+	fb_set_cmap(&all->info.cmap, &all->info);
+
+	cg14_init_fix(&all->info, linebytes);
+
+	if (register_framebuffer(&all->info) < 0) {
+		printk(KERN_ERR "cg14: Could not register framebuffer.\n");
+		fb_dealloc_cmap(&all->info.cmap);
+		kfree(all);
+		return;
+	}
+
+	list_add(&all->list, &cg14_list);
+
+	printk("cg14: cgfourteen at %lx:%lx, %dMB\n",
+	       all->par.iospace, all->par.physbase, all->par.ramsize >> 20);
+
+}
+
+int __init cg14_init(void)
+{
+	struct sbus_bus *sbus;
+	struct sbus_dev *sdev;
+
+	if (fb_get_options("cg14fb", NULL))
+		return -ENODEV;
+
+#ifdef CONFIG_SPARC32
+	{
+		int root, node;
+
+		root = prom_getchild(prom_root_node);
+		root = prom_searchsiblings(root, "obio");
+		if (root) {
+			node = prom_searchsiblings(prom_getchild(root),
+						   "cgfourteen");
+			if (node)
+				cg14_init_one(NULL, node, root);
+		}
+	}
+#endif
+	for_all_sbusdev(sdev, sbus) {
+		if (!strcmp(sdev->prom_name, "cgfourteen"))
+			cg14_init_one(sdev, sdev->prom_node, sbus->prom_node);
+	}
+
+	return 0;
+}
+
+void __exit cg14_exit(void)
+{
+	struct list_head *pos, *tmp;
+
+	list_for_each_safe(pos, tmp, &cg14_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
+cg14_setup(char *arg)
+{
+	/* No cmdline options yet... */
+	return 0;
+}
+
+module_init(cg14_init);
+
+#ifdef MODULE
+module_exit(cg14_exit);
+#endif
+
+MODULE_DESCRIPTION("framebuffer driver for CGfourteen chipsets");
+MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
+MODULE_LICENSE("GPL");