ofw_rascons.c revision 1.1
1 /* $NetBSD: ofw_rascons.c,v 1.1 2007/11/26 19:58:31 garbled Exp $ */ 2 3 /* 4 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie the 27 * rights to redistribute these changes. 28 */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: ofw_rascons.c,v 1.1 2007/11/26 19:58:31 garbled Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/buf.h> 35 #include <sys/conf.h> 36 #include <sys/device.h> 37 #include <sys/ioctl.h> 38 #include <sys/kernel.h> 39 #include <sys/malloc.h> 40 #include <sys/systm.h> 41 #include <powerpc/oea/bat.h> 42 43 #include <dev/ofw/openfirm.h> 44 #include <uvm/uvm_extern.h> 45 46 #include <machine/bus.h> 47 #include <machine/autoconf.h> 48 49 #include <dev/wscons/wsconsio.h> 50 #include <dev/wscons/wsdisplayvar.h> 51 #include <dev/rasops/rasops.h> 52 #include <dev/wsfont/wsfont.h> 53 #include <dev/wscons/wsdisplay_vconsvar.h> 54 55 #include <powerpc/oea/ofw_rasconsvar.h> 56 #include "wsdisplay.h" 57 58 /* we need a wsdisplay to do anything halfway useful */ 59 #if NWSDISPLAY > 0 60 61 #if defined(PPC_OEA64) || defined (PPC_OEA64_BRIDGE) 62 int rascons_enable_cache = 0; 63 #else 64 #ifdef OFB_ENABLE_CACHE 65 int rascons_enable_cache = 1; 66 #else 67 int rascons_enable_cache = 0; 68 #endif 69 #endif /* PPC_OEA64 */ 70 71 static int copy_rom_font(void); 72 static struct wsdisplay_font openfirm6x11; 73 static vaddr_t fbaddr; 74 static int romfont_loaded = 0; 75 76 struct vcons_screen rascons_console_screen; 77 78 struct wsscreen_descr rascons_stdscreen = { 79 "std", 80 0, 0, /* will be filled in -- XXX shouldn't, it's global */ 81 0, 82 0, 0, 83 WSSCREEN_REVERSE 84 }; 85 86 int 87 rascons_cnattach(void) 88 { 89 struct rasops_info *ri = &rascons_console_screen.scr_ri; 90 long defattr; 91 int crow = 0; 92 char type[16]; 93 94 OF_getprop(console_node, "device_type", type, sizeof(type)); 95 if (strcmp(type, "display") != 0) 96 return -1; 97 98 /* get current cursor position */ 99 OF_interpret("line#", 0, 1, &crow); 100 101 /* move (rom monitor) cursor to the lowest line - 1 */ 102 OF_interpret("#lines 2 - to line#", 0, 0); 103 104 wsfont_init(); 105 if (copy_rom_font() == 0) { 106 romfont_loaded = 1; 107 } 108 109 /* set up rasops */ 110 rascons_init_rasops(console_node, ri); 111 112 /* 113 * no need to clear the screen here when we're mimicing firmware 114 * output anyway 115 */ 116 #if 0 117 if (ri->ri_width >= 1024 && ri->ri_height >= 768) { 118 int i, screenbytes = ri->ri_stride * ri->ri_height; 119 120 for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) 121 *(u_int32_t *)(fbaddr + i) = 0xffffffff; 122 crow = 0; 123 } 124 #endif 125 126 rascons_stdscreen.nrows = ri->ri_rows; 127 rascons_stdscreen.ncols = ri->ri_cols; 128 rascons_stdscreen.textops = &ri->ri_ops; 129 rascons_stdscreen.capabilities = ri->ri_caps; 130 131 ri->ri_ops.allocattr(ri, 0, 0, 0, &defattr); 132 wsdisplay_preattach(&rascons_stdscreen, ri, 0, max(0, 133 min(crow, ri->ri_rows - 1)), defattr); 134 135 #if notyet 136 rascons_init_cmap(NULL); 137 #endif 138 139 return 0; 140 } 141 142 static int 143 copy_rom_font() 144 { 145 u_char *romfont; 146 int char_width, char_height; 147 int chosen, mmu, m, e; 148 149 /* Get ROM FONT address. */ 150 OF_interpret("font-adr", 0, 1, &romfont); 151 if (romfont == NULL) 152 return -1; 153 154 chosen = OF_finddevice("/chosen"); 155 OF_getprop(chosen, "mmu", &mmu, 4); 156 157 /* 158 * Convert to physcal address. We cannot access to Open Firmware's 159 * virtual address space. 160 */ 161 OF_call_method("translate", mmu, 1, 3, romfont, &romfont, &m, &e); 162 163 /* Get character size */ 164 OF_interpret("char-width", 0, 1, &char_width); 165 OF_interpret("char-height", 0, 1, &char_height); 166 167 openfirm6x11.name = "Open Firmware"; 168 openfirm6x11.firstchar = 32; 169 openfirm6x11.numchars = 96; 170 openfirm6x11.encoding = WSDISPLAY_FONTENC_ISO; 171 openfirm6x11.fontwidth = char_width; 172 openfirm6x11.fontheight = char_height; 173 openfirm6x11.stride = 1; 174 openfirm6x11.bitorder = WSDISPLAY_FONTORDER_L2R; 175 openfirm6x11.byteorder = WSDISPLAY_FONTORDER_L2R; 176 openfirm6x11.data = romfont; 177 178 return 0; 179 } 180 181 int 182 rascons_init_rasops(int node, struct rasops_info *ri) 183 { 184 int32_t width, height, linebytes, depth; 185 186 /* XXX /chaos/control doesn't have "width", "height", ... */ 187 width = height = -1; 188 if (OF_getprop(node, "width", &width, 4) != 4) 189 OF_interpret("screen-width", 0, 1, &width); 190 if (OF_getprop(node, "height", &height, 4) != 4) 191 OF_interpret("screen-height", 0, 1, &height); 192 if (OF_getprop(node, "linebytes", &linebytes, 4) != 4) 193 linebytes = width; /* XXX */ 194 if (OF_getprop(node, "depth", &depth, 4) != 4) 195 depth = 8; /* XXX */ 196 if (OF_getprop(node, "address", &fbaddr, 4) != 4) 197 OF_interpret("frame-buffer-adr", 0, 1, &fbaddr); 198 199 if (width == -1 || height == -1 || fbaddr == 0 || fbaddr == -1) 200 return false; 201 202 /* Enable write-through cache. */ 203 #if defined (PPC_OEA) && !defined (PPC_OEA64) && !defined (PPC_OEA64_BRIDGE) 204 if (rascons_enable_cache) { 205 vaddr_t va; 206 /* 207 * Let's try to find an empty BAT to use 208 */ 209 for (va = SEGMENT_LENGTH; va < (USER_SR << ADDR_SR_SHFT); 210 va += SEGMENT_LENGTH) { 211 if (battable[va >> ADDR_SR_SHFT].batu == 0) { 212 battable[va >> ADDR_SR_SHFT].batl = 213 BATL(fbaddr & 0xf0000000, 214 BAT_G | BAT_W | BAT_M, BAT_PP_RW); 215 battable[va >> ADDR_SR_SHFT].batu = 216 BATL(va, BAT_BL_256M, BAT_Vs); 217 fbaddr &= 0x0fffffff; 218 fbaddr |= va; 219 break; 220 } 221 } 222 } 223 #endif /* PPC_OEA64 */ 224 225 /* initialize rasops */ 226 ri->ri_width = width; 227 ri->ri_height = height; 228 ri->ri_depth = depth; 229 ri->ri_stride = linebytes; 230 ri->ri_bits = (char *)fbaddr; 231 ri->ri_flg = RI_CENTER | RI_FULLCLEAR; 232 233 /* mimic firmware output if we can find the ROM font */ 234 if (romfont_loaded) { 235 int cols, rows; 236 237 /* 238 * XXX this assumes we're the console which may or may not 239 * be the case 240 */ 241 OF_interpret("#lines", 0, 1, &rows); 242 OF_interpret("#columns", 0, 1, &cols); 243 ri->ri_font = &openfirm6x11; 244 ri->ri_wsfcookie = -1; /* not using wsfont */ 245 rasops_init(ri, rows, cols); 246 247 ri->ri_xorigin = (width - cols * ri->ri_font->fontwidth) >> 1; 248 ri->ri_yorigin = (height - rows * ri->ri_font->fontheight) 249 >> 1; 250 ri->ri_bits = (char *)fbaddr + ri->ri_xorigin + 251 ri->ri_stride * ri->ri_yorigin; 252 } else { 253 /* use as much of the screen as the font permits */ 254 rasops_init(ri, height/8, width/8); 255 ri->ri_caps = WSSCREEN_WSCOLORS; 256 rasops_reconfig(ri, height / ri->ri_font->fontheight, 257 width / ri->ri_font->fontwidth); 258 } 259 260 return true; 261 } 262 #else /* NWSDISPLAY > 0 */ 263 int 264 rascons_cnattach() 265 { 266 return -1; 267 } 268 #endif 269
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