Differential D17884 Diff 118021 sys/dev/vt/hw/efifb/efifb.c

Changeset View

Standalone View

sys/dev/vt/hw/efifb/efifb.c

Show First 20 Lines • Show All 97 Lines • ▼ Show 20 Lines
}		}

static int		static int
vt_efifb_init(struct vt_device *vd)		vt_efifb_init(struct vt_device *vd)
{		{
struct fb_info *info;		struct fb_info *info;
struct efi_fb *efifb;		struct efi_fb *efifb;
caddr_t kmdp;		caddr_t kmdp;
		int memattr;
int roff, goff, boff;		int roff, goff, boff;
		char attr[16];

		/*
		* XXX TODO: I think there's more nuance here than we're acknowledging,
		* and we should look into it. It may be that the framebuffer lives in
		* a segment of memory that doesn't support one or both of these. We
		* should likely be consulting the memory map for any applicable
		* cacheability attributes before making a final decision.
		*/
		memattr = VM_MEMATTR_WRITE_COMBINING;
		if (TUNABLE_STR_FETCH("hw.efifb.cache_attr", attr, sizeof(attr))) {
		/*
		* We'll allow WC but it's currently the default, UC is the only
		* other tested one at this time.
		*/
		if (strcasecmp(attr, "wc") != 0 &&
		strcasecmp(attr, "uc") != 0) {
		printf("efifb: unsupported cache attr specified: %s\n",
		attr);
		printf("efifb: expected \"wc\" or \"uc\"\n");
		} else if (strcasecmp(attr, "uc") == 0) {
		memattr = VM_MEMATTR_UNCACHEABLE;
		}
		}

info = vd->vd_softc;		info = vd->vd_softc;
if (info == NULL)		if (info == NULL)
info = vd->vd_softc = (void *)&local_info;		info = vd->vd_softc = (void *)&local_info;

kmdp = preload_search_by_type("elf kernel");		kmdp = preload_search_by_type("elf kernel");
if (kmdp == NULL)		if (kmdp == NULL)
kmdp = preload_search_by_type("elf64 kernel");		kmdp = preload_search_by_type("elf64 kernel");
efifb = (struct efi_fb *)preload_search_info(kmdp,		efifb = (struct efi_fb *)preload_search_info(kmdp,
Show All 20 Lines	vt_config_cons_colors(info, COLOR_FORMAT_RGB,
efifb->fb_mask_red >> roff, roff,		efifb->fb_mask_red >> roff, roff,
efifb->fb_mask_green >> goff, goff,		efifb->fb_mask_green >> goff, goff,
efifb->fb_mask_blue >> boff, boff);		efifb->fb_mask_blue >> boff, boff);
info->fb_cmsize = NCOLORS;		info->fb_cmsize = NCOLORS;

info->fb_size = info->fb_height * info->fb_stride;		info->fb_size = info->fb_height * info->fb_stride;
info->fb_pbase = efifb->fb_addr;		info->fb_pbase = efifb->fb_addr;
info->fb_vbase = (intptr_t)pmap_mapdev_attr(info->fb_pbase,		info->fb_vbase = (intptr_t)pmap_mapdev_attr(info->fb_pbase,
info->fb_size, VM_MEMATTR_WRITE_COMBINING);		info->fb_size, memattr);

vt_fb_init(vd);		vt_fb_init(vd);

return (CN_INTERNAL);		return (CN_INTERNAL);
}		}

static void		static void
vt_efifb_fini(struct vt_device vd, void softc)		vt_efifb_fini(struct vt_device vd, void softc)
{		{
struct fb_info *info = softc;		struct fb_info *info = softc;

vt_fb_fini(vd, softc);		vt_fb_fini(vd, softc);
pmap_unmapdev((void *)info->fb_vbase, info->fb_size);		pmap_unmapdev((void *)info->fb_vbase, info->fb_size);
}		}