/* sbuslib.c: Helper library for SBUS framebuffer drivers. * * Copyright (C) 2003 David S. Miller (davem@redhat.com) */ #include #include #include #include #include #include #include #include #include #include "sbuslib.h" void sbusfb_fill_var(struct fb_var_screeninfo *var, struct device_node *dp, int bpp) { memset(var, 0, sizeof(*var)); var->xres = of_getintprop_default(dp, "width", 1152); var->yres = of_getintprop_default(dp, "height", 900); var->xres_virtual = var->xres; var->yres_virtual = var->yres; var->bits_per_pixel = bpp; } EXPORT_SYMBOL(sbusfb_fill_var); static unsigned long sbusfb_mmapsize(long size, unsigned long fbsize) { if (size == SBUS_MMAP_EMPTY) return 0; if (size >= 0) return size; return fbsize * (-size); } int sbusfb_mmap_helper(struct sbus_mmap_map *map, unsigned long physbase, unsigned long fbsize, unsigned long iospace, struct vm_area_struct *vma) { unsigned int size, page, r, map_size; unsigned long map_offset = 0; unsigned long off; int i; if (!(vma->vm_flags & (VM_SHARED | VM_MAYSHARE))) return -EINVAL; size = vma->vm_end - vma->vm_start; if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) return -EINVAL; off = vma->vm_pgoff << PAGE_SHIFT; /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); /* Each page, see which map applies */ for (page = 0; page < size; ){ map_size = 0; for (i = 0; map[i].size; i++) if (map[i].voff == off+page) { map_size = sbusfb_mmapsize(map[i].size, fbsize); #ifdef __sparc_v9__ #define POFF_MASK (PAGE_MASK|0x1UL) #else #define POFF_MASK (PAGE_MASK) #endif map_offset = (physbase + map[i].poff) & POFF_MASK; break; } if (!map_size) { page += PAGE_SIZE; continue; } if (page + map_size > size) map_size = size - page; r = io_remap_pfn_range(vma, vma->vm_start + page, MK_IOSPACE_PFN(iospace, map_offset >> PAGE_SHIFT), map_size, vma->vm_page_prot); if (r) return -EAGAIN; page += map_size; } return 0; } EXPORT_SYMBOL(sbusfb_mmap_helper); int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg, struct fb_info *info, int type, int fb_depth, unsigned long fb_size) { switch(cmd) { case FBIOGTYPE: { struct fbtype __user *f = (struct fbtype __user *) arg; if (put_user(type, &f->fb_type) || __put_user(info->var.yres, &f->fb_height) || __put_user(info->var.xres, &f->fb_width) || __put_user(fb_depth, &f->fb_depth) || __put_user(0, &f->fb_cmsize) || __put_user(fb_size, &f->fb_cmsize)) return -EFAULT; return 0; } case FBIOPUTCMAP_SPARC: { struct fbcmap __user *c = (struct fbcmap __user *) arg; struct fb_cmap cmap; u16 red, green, blue; u8 red8, green8, blue8; unsigned char __user *ured; unsigned char __user *ugreen; unsigned char __user *ublue; int index, count, i; if (get_user(index, &c->index) || __get_user(count, &c->count) || __get_user(ured, &c->red) || __get_user(ugreen, &c->green) || __get_user(ublue, &c->blue)) return -EFAULT; cmap.len = 1; cmap.red = &red; cmap.green = &green; cmap.blue = &blue; cmap.transp = NULL; for (i = 0; i < count; i++) { int err; if (get_user(red8, &ured[i]) || get_user(green8, &ugreen[i]) || get_user(blue8, &ublue[i])) return -EFAULT; red = red8 << 8; green = green8 << 8; blue = blue8 << 8; cmap.start = index + i; err = fb_set_cmap(&cmap, info); if (err) return err; } return 0; } case FBIOGETCMAP_SPARC: { struct fbcmap __user *c = (struct fbcmap __user *) arg; unsigned char __user *ured; unsigned char __user *ugreen; unsigned char __user *ublue; struct fb_cmap *cmap = &info->cmap; int index, count, i; u8 red, green, blue; if (get_user(index, &c->index) || __get_user(count, &c->count) || __get_user(ured, &c->red) || __get_user(ugreen, &c->green) || __get_user(ublue, &c->blue)) return -EFAULT; if (index + count > cmap->len) return -EINVAL; for (i = 0; i < count; i++) { red = cmap->red[index + i] >> 8; green = cmap->green[index + i] >> 8; blue = cmap->blue[index + i] >> 8; if (put_user(red, &ured[i]) || put_user(green, &ugreen[i]) || put_user(blue, &ublue[i])) return -EFAULT; } return 0; } default: return -EINVAL; } } EXPORT_SYMBOL(sbusfb_ioctl_helper); #ifdef CONFIG_COMPAT static int fbiogetputcmap(struct fb_info *info, unsigned int cmd, unsigned long arg) { struct fbcmap32 __user *argp = (void __user *)arg; struct fbcmap __user *p = compat_alloc_user_space(sizeof(*p)); u32 addr; int ret; ret = copy_in_user(p, argp, 2 * sizeof(int)); ret |= get_user(addr, &argp->red); ret |= put_user(compat_ptr(addr), &p->red); ret |= get_user(addr, &argp->green); ret |= put_user(compat_ptr(addr), &p->green); ret |= get_user(addr, &argp->blue); ret |= put_user(compat_ptr(addr), &p->blue); if (ret) return -EFAULT; return info->fbops->fb_ioctl(info, (cmd == FBIOPUTCMAP32) ? FBIOPUTCMAP_SPARC : FBIOGETCMAP_SPARC, (unsigned long)p); } static int fbiogscursor(struct fb_info *info, unsigned long arg) { struct fbcursor __user *p = compat_alloc_user_space(sizeof(*p)); struct fbcursor32 __user *argp = (void __user *)arg; compat_uptr_t addr; int ret; ret = copy_in_user(p, argp, 2 * sizeof (short) + 2 * sizeof(struct fbcurpos)); ret |= copy_in_user(&p->size, &argp->size, sizeof(struct fbcurpos)); ret |= copy_in_user(&p->cmap, &argp->cmap, 2 * sizeof(int)); ret |= get_user(addr, &argp->cmap.red); ret |= put_user(compat_ptr(addr), &p->cmap.red); ret |= get_user(addr, &argp->cmap.green); ret |= put_user(compat_ptr(addr), &p->cmap.green); ret |= get_user(addr, &argp->cmap.blue); ret |= put_user(compat_ptr(addr), &p->cmap.blue); ret |= get_user(addr, &argp->mask); ret |= put_user(compat_ptr(addr), &p->mask); ret |= get_user(addr, &argp->image); ret |= put_user(compat_ptr(addr), &p->image); if (ret) return -EFAULT; return info->fbops->fb_ioctl(info, FBIOSCURSOR, (unsigned long)p); } int sbusfb_compat_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) { switch (cmd) { case FBIOGTYPE: case FBIOSATTR: case FBIOGATTR: case FBIOSVIDEO: case FBIOGVIDEO: case FBIOGCURSOR32: /* This is not implemented yet. Later it should be converted... */ case FBIOSCURPOS: case FBIOGCURPOS: case FBIOGCURMAX: return info->fbops->fb_ioctl(info, cmd, arg); case FBIOPUTCMAP32: return fbiogetputcmap(info, cmd, arg); case FBIOGETCMAP32: return fbiogetputcmap(info, cmd, arg); case FBIOSCURSOR32: return fbiogscursor(info, arg); default: return -ENOIOCTLCMD; } } EXPORT_SYMBOL(sbusfb_compat_ioctl); #endif rence) is set to "balance_power" (0x80) -- the default on most systems. It occurs because the platform BIOS may erroneously enable an energy-efficiency setting -- MSR_IA32_POWER_CTL BIT-EE, which is not recommended to be enabled on this SKU. On the failing systems, this BIOS issue was not discovered when the desktop motherboard was tested with Windows, because the BIOS also neglects to provide the ACPI/CPPC table, that Windows requires to enable HWP, and so Windows runs in legacy P-state mode, where this setting has no effect. Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and so it runs in HWP mode, exposing this incorrect BIOS configuration. There are several ways to address this problem. First, Linux can also run in legacy P-state mode on this system. As intel_pstate is how Linux enables HWP, booting with "intel_pstate=disable" will run in acpi-cpufreq/ondemand legacy p-state mode. Or second, the "performance" governor can be used with intel_pstate, which will modify HWP.EPP to 0. Or third, starting in 4.10, the /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference attribute in can be updated from "balance_power" to "performance". Or fourth, apply this patch, which fixes the erroneous setting of MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default configuration to function as designed. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'sound/firewire/digi00x/digi00x.h')