| /* $Id: cgfourteenfb.c,v 1.11 2001/09/19 00:04:33 davem Exp $ |
| * cgfourteenfb.c: CGfourteen frame buffer driver |
| * |
| * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz) |
| * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx) |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/sched.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/mm.h> |
| #include <linux/tty.h> |
| #include <linux/slab.h> |
| #include <linux/vmalloc.h> |
| #include <linux/delay.h> |
| #include <linux/interrupt.h> |
| #include <linux/fb.h> |
| #include <linux/init.h> |
| #include <linux/selection.h> |
| |
| #include <video/sbusfb.h> |
| #include <asm/io.h> |
| #include <asm/pgtable.h> |
| #include <asm/uaccess.h> |
| |
| #include <video/fbcon-cfb8.h> |
| |
| #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 |
| |
| MODULE_LICENSE("GPL"); |
| |
| 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]; |
| }; |
| |
| static struct sbus_mmap_map cg14_mmap_map[] __initdata = { |
| { CG14_REGS, 0x80000000, 0x1000 }, |
| { CG14_XLUT, 0x80003000, 0x1000 }, |
| { CG14_CLUT1, 0x80004000, 0x1000 }, |
| { CG14_CLUT2, 0x80005000, 0x1000 }, |
| { CG14_CLUT3, 0x80006000, 0x1000 }, |
| { CG3_MMAP_OFFSET - |
| 0x7000, 0x80000000, 0x7000 }, |
| { CG3_MMAP_OFFSET, 0x00000000, SBUS_MMAP_FBSIZE(1) }, |
| { MDI_CURSOR_MAP, 0x80001000, 0x1000 }, |
| { MDI_CHUNKY_BGR_MAP, 0x01000000, 0x400000 }, |
| { MDI_PLANAR_X16_MAP, 0x02000000, 0x200000 }, |
| { MDI_PLANAR_C16_MAP, 0x02800000, 0x200000 }, |
| { MDI_PLANAR_X32_MAP, 0x03000000, 0x100000 }, |
| { MDI_PLANAR_B32_MAP, 0x03400000, 0x100000 }, |
| { MDI_PLANAR_G32_MAP, 0x03800000, 0x100000 }, |
| { MDI_PLANAR_R32_MAP, 0x03c00000, 0x100000 }, |
| { 0, 0, 0 } |
| }; |
| |
| static void cg14_loadcmap (struct fb_info_sbusfb *fb, struct display *p, |
| int index, int count) |
| { |
| struct cg14_clut *clut = fb->s.cg14.clut; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&fb->lock, flags); |
| for (; count--; index++) { |
| u32 val; |
| |
| val = ((fb->color_map CM(index,2) << 16) | |
| (fb->color_map CM(index,1) << 8) | |
| (fb->color_map CM(index,0))); |
| sbus_writel(val, &clut->c_clut[index]); |
| } |
| spin_unlock_irqrestore(&fb->lock, flags); |
| } |
| |
| static void cg14_margins (struct fb_info_sbusfb *fb, struct display *p, |
| int x_margin, int y_margin) |
| { |
| p->screen_base += (y_margin - fb->y_margin) * |
| p->line_length + (x_margin - fb->x_margin); |
| } |
| |
| static void cg14_setcursormap (struct fb_info_sbusfb *fb, u8 *red, u8 *green, u8 *blue) |
| { |
| struct cg14_cursor *cur = fb->s.cg14.cursor; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&fb->lock, flags); |
| sbus_writel(((red[0]) | (green[0] << 8) | (blue[0] << 16)), &cur->color0); |
| sbus_writel(((red[1]) | (green[1] << 8) | (blue[1] << 16)), &cur->color1); |
| spin_unlock_irqrestore(&fb->lock, flags); |
| } |
| |
| /* Set cursor shape */ |
| static void cg14_setcurshape (struct fb_info_sbusfb *fb) |
| { |
| struct cg14_cursor *cur = fb->s.cg14.cursor; |
| unsigned long flags; |
| int i; |
| |
| spin_lock_irqsave(&fb->lock, flags); |
| for (i = 0; i < 32; i++){ |
| sbus_writel(fb->cursor.bits[0][i], &cur->cpl0[i]); |
| sbus_writel(fb->cursor.bits[1][i], &cur->cpl1[i]); |
| } |
| spin_unlock_irqrestore(&fb->lock, flags); |
| } |
| |
| /* Load cursor information */ |
| static void cg14_setcursor (struct fb_info_sbusfb *fb) |
| { |
| struct cg_cursor *c = &fb->cursor; |
| struct cg14_cursor *cur = fb->s.cg14.cursor; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&fb->lock, flags); |
| if (c->enable) { |
| u8 tmp = sbus_readb(&cur->ccr); |
| |
| tmp |= CG14_CCR_ENABLE; |
| sbus_writeb(tmp, &cur->ccr); |
| } else { |
| u8 tmp = sbus_readb(&cur->ccr); |
| |
| tmp &= ~CG14_CCR_ENABLE; |
| sbus_writeb(tmp, &cur->ccr); |
| } |
| sbus_writew(((c->cpos.fbx - c->chot.fbx) & 0xfff), &cur->cursx); |
| sbus_writew(((c->cpos.fby - c->chot.fby) & 0xfff), &cur->cursy); |
| spin_unlock_irqrestore(&fb->lock, flags); |
| } |
| |
| static void cg14_switch_from_graph (struct fb_info_sbusfb *fb) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&fb->lock, flags); |
| |
| /* Set the 8-bpp mode */ |
| if (fb->open && fb->mmaped){ |
| volatile char *mcr = &fb->s.cg14.regs->mcr; |
| char tmp; |
| |
| fb->s.cg14.mode = 8; |
| tmp = sbus_readb(mcr); |
| tmp &= ~(CG14_MCR_PIXMODE_MASK); |
| sbus_writeb(tmp, mcr); |
| } |
| spin_unlock_irqrestore(&fb->lock, flags); |
| } |
| |
| static void cg14_reset (struct fb_info_sbusfb *fb) |
| { |
| volatile char *mcr = &fb->s.cg14.regs->mcr; |
| unsigned long flags; |
| char tmp; |
| |
| spin_lock_irqsave(&fb->lock, flags); |
| tmp = sbus_readb(mcr); |
| tmp &= ~(CG14_MCR_PIXMODE_MASK); |
| sbus_writeb(tmp, mcr); |
| spin_unlock_irqrestore(&fb->lock, flags); |
| } |
| |
| static int cg14_ioctl (struct fb_info_sbusfb *fb, unsigned int cmd, unsigned long arg) |
| { |
| volatile char *mcr = &fb->s.cg14.regs->mcr; |
| struct mdi_cfginfo *mdii; |
| unsigned long flags; |
| int mode, ret = 0; |
| char tmp; |
| |
| switch (cmd) { |
| case MDI_RESET: |
| spin_lock_irqsave(&fb->lock, flags); |
| tmp = sbus_readb(mcr); |
| tmp &= ~CG14_MCR_PIXMODE_MASK; |
| sbus_writeb(tmp, mcr); |
| spin_unlock_irqrestore(&fb->lock, flags); |
| break; |
| case MDI_GET_CFGINFO: |
| mdii = (struct mdi_cfginfo *)arg; |
| if (put_user(FBTYPE_MDICOLOR, &mdii->mdi_type) || |
| __put_user(fb->type.fb_height, &mdii->mdi_height) || |
| __put_user(fb->type.fb_width, &mdii->mdi_width) || |
| __put_user(fb->s.cg14.mode, &mdii->mdi_mode) || |
| __put_user(72, &mdii->mdi_pixfreq) || /* FIXME */ |
| __put_user(fb->s.cg14.ramsize, &mdii->mdi_size)) |
| return -EFAULT; |
| break; |
| case MDI_SET_PIXELMODE: |
| if (get_user(mode, (int *)arg)) |
| return -EFAULT; |
| |
| spin_lock_irqsave(&fb->lock, flags); |
| tmp = sbus_readb(mcr); |
| switch (mode){ |
| case MDI_32_PIX: |
| tmp = (tmp & ~CG14_MCR_PIXMODE_MASK) | |
| (CG14_MCR_PIXMODE_32 << CG14_MCR_PIXMODE_SHIFT); |
| break; |
| case MDI_16_PIX: |
| tmp = (tmp & ~CG14_MCR_PIXMODE_MASK) | 0x20; |
| break; |
| case MDI_8_PIX: |
| tmp = (tmp & ~CG14_MCR_PIXMODE_MASK); |
| break; |
| default: |
| ret = -ENOSYS; |
| break; |
| }; |
| if (ret == 0) { |
| sbus_writeb(tmp, mcr); |
| fb->s.cg14.mode = mode; |
| } |
| spin_unlock_irqrestore(&fb->lock, flags); |
| break; |
| default: |
| ret = -EINVAL; |
| }; |
| |
| return ret; |
| } |
| |
| static unsigned long __init get_phys(unsigned long addr) |
| { |
| return __get_phys(addr); |
| } |
| |
| static int __init get_iospace(unsigned long addr) |
| { |
| return __get_iospace(addr); |
| } |
| |
| static char idstring[60] __initdata = { 0 }; |
| |
| char __init *cgfourteenfb_init(struct fb_info_sbusfb *fb) |
| { |
| struct fb_fix_screeninfo *fix = &fb->fix; |
| struct display *disp = &fb->disp; |
| struct fbtype *type = &fb->type; |
| unsigned long rphys, phys; |
| u32 bases[6]; |
| int is_8mb, i; |
| |
| #ifndef FBCON_HAS_CFB8 |
| return NULL; |
| #endif |
| prom_getproperty (fb->prom_node, "address", (char *) &bases[0], 8); |
| if (!bases[0]) { |
| printk("cg14 not mmaped\n"); |
| return NULL; |
| } |
| if (get_iospace(bases[0]) != get_iospace(bases[1])) { |
| printk("Ugh. cg14 iospaces don't match\n"); |
| return NULL; |
| } |
| fb->physbase = phys = get_phys(bases[1]); |
| rphys = get_phys(bases[0]); |
| fb->iospace = get_iospace(bases[0]); |
| fb->s.cg14.regs = (struct cg14_regs *)(unsigned long)bases[0]; |
| fb->s.cg14.clut = (void *)((unsigned long)bases[0]+CG14_CLUT1); |
| fb->s.cg14.cursor = (void *)((unsigned long)bases[0]+CG14_CURSORREGS); |
| disp->screen_base = (char *)bases[1]; |
| |
| /* CG14_VCA_8MB_MASK is not correctly set on the 501-2482 |
| * VSIMM, so we read the memory size from the PROM |
| */ |
| prom_getproperty(fb->prom_node, "reg", (char *) &bases[0], 24); |
| is_8mb = bases[5] == 0x800000; |
| |
| fb->mmap_map = kmalloc(sizeof(cg14_mmap_map), GFP_KERNEL); |
| if (!fb->mmap_map) |
| return NULL; |
| |
| for (i = 0; ; i++) { |
| fb->mmap_map[i].voff = cg14_mmap_map[i].voff; |
| fb->mmap_map[i].poff = (cg14_mmap_map[i].poff & 0x80000000) ? |
| (cg14_mmap_map[i].poff & 0x7fffffff) + rphys - phys : |
| cg14_mmap_map[i].poff; |
| fb->mmap_map[i].size = cg14_mmap_map[i].size; |
| if (is_8mb && fb->mmap_map[i].size >= 0x100000 && |
| fb->mmap_map[i].size <= 0x400000) |
| fb->mmap_map[i].size <<= 1; |
| if (!cg14_mmap_map[i].size) |
| break; |
| } |
| |
| strcpy(fb->info.modename, "CGfourteen"); |
| strcpy(fix->id, "CGfourteen"); |
| fix->line_length = fb->var.xres_virtual; |
| fix->accel = FB_ACCEL_SUN_CG14; |
| |
| disp->scrollmode = SCROLL_YREDRAW; |
| disp->screen_base += fix->line_length * fb->y_margin + fb->x_margin; |
| fb->dispsw = fbcon_cfb8; |
| |
| type->fb_depth = 24; |
| fb->emulations[1] = FBTYPE_SUN3COLOR; |
| |
| fb->margins = cg14_margins; |
| fb->loadcmap = cg14_loadcmap; |
| fb->setcursor = cg14_setcursor; |
| fb->setcursormap = cg14_setcursormap; |
| fb->setcurshape = cg14_setcurshape; |
| fb->reset = cg14_reset; |
| fb->switch_from_graph = cg14_switch_from_graph; |
| fb->ioctl = cg14_ioctl; |
| |
| fb->s.cg14.mode = 8; |
| fb->s.cg14.ramsize = (is_8mb) ? 0x800000 : 0x400000; |
| |
| cg14_reset(fb); |
| |
| sprintf(idstring, "cgfourteen at %x.%08lx, %dMB, rev=%d, impl=%d", fb->iospace, phys, |
| is_8mb ? 8 : 4, fb->s.cg14.regs->rev >> 4, fb->s.cg14.regs->rev & 0xf); |
| |
| return idstring; |
| } |