4 * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G
5 * integrated graphics chips.
7 * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
10 * This driver consists of two parts. The first part (intelfbdrv.c) provides
11 * the basic fbdev interfaces, is derived in part from the radeonfb and
12 * vesafb drivers, and is covered by the GPL. The second part (intelfbhw.c)
13 * provides the code to program the hardware. Most of it is derived from
14 * the i810/i830 XFree86 driver. The HW-specific code is covered here
15 * under a dual license (GPL and MIT/XFree86 license).
21 /* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
25 * 01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
26 * This initial version is a basic core that works a lot like
27 * the vesafb driver. It must be built-in to the kernel,
28 * and the initial video mode must be set with vga=XXX at
29 * boot time. (David Dawes)
31 * 01/2003 - Version 0.2.0: Mode switching added, colormap support
32 * implemented, Y panning, and soft screen blanking implemented.
33 * No acceleration yet. (David Dawes)
35 * 01/2003 - Version 0.3.0: fbcon acceleration support added. Module
36 * option handling added. (David Dawes)
38 * 01/2003 - Version 0.4.0: fbcon HW cursor support added. (David Dawes)
40 * 01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
43 * 02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
44 * mode validation checks. (David Dawes)
46 * 02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
47 * acceleration is disabled while an XFree86 server is running.
50 * 02/2003 - Version 0.4.4: Monitor DPMS support. (David Dawes)
52 * 02/2003 - Version 0.4.5: Basic XFree86 + fbdev working. (David Dawes)
54 * 02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
55 * as 2.4.x kernels. (David Dawes)
57 * 02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
60 * 02/2003 - Version 0.7.0: Test on 852GM/855GM. Acceleration and HW
61 * cursor are disabled on this platform. (David Dawes)
63 * 02/2003 - Version 0.7.1: Test on 845G. Acceleration is disabled
64 * on this platform. (David Dawes)
66 * 02/2003 - Version 0.7.2: Test on 830M. Acceleration and HW
67 * cursor are disabled on this platform. (David Dawes)
69 * 02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
72 * 02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
73 * in the kernel, and add mode bpp verification and default
74 * bpp selection based on which FBCON_HAS_CFB* are configured.
77 * 02/2003 - Version 0.7.5: Add basic package/install scripts based on the
78 * DRI packaging scripts. (David Dawes)
80 * 04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
81 * kernels. (David Dawes, reported by Anupam).
83 * 06/2003 - Version 0.7.7:
84 * Fix Makefile.kernel build problem (Tsutomu Yasuda).
85 * Fix mis-placed #endif (2.4.21 kernel).
87 * 09/2004 - Version 0.9.0 - by Sylvain Meyer
88 * Port to linux 2.6 kernel fbdev
89 * Fix HW accel and HW cursor on i845G
90 * Use of agpgart for fb memory reservation
93 * 10/2004 - Version 0.9.1
94 * Use module_param instead of old MODULE_PARM
97 * 11/2004 - Version 0.9.2
98 * Add vram option to reserve more memory than stolen by BIOS
99 * Fix intelfbhw_pan_display typo
100 * Add __initdata annotations
110 #include <linux/config.h>
111 #include <linux/module.h>
112 #include <linux/kernel.h>
113 #include <linux/errno.h>
114 #include <linux/string.h>
115 #include <linux/mm.h>
116 #include <linux/tty.h>
117 #include <linux/slab.h>
118 #include <linux/delay.h>
119 #include <linux/fb.h>
120 #include <linux/console.h>
121 #include <linux/selection.h>
122 #include <linux/ioport.h>
123 #include <linux/init.h>
124 #include <linux/pci.h>
125 #include <linux/vmalloc.h>
126 #include <linux/kd.h>
127 #include <linux/vt_kern.h>
128 #include <linux/pagemap.h>
129 #include <linux/version.h>
134 #include <asm/mtrr.h>
138 #include "intelfbdrv.h"
139 #include "intelfbhw.h"
142 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
143 * mobile chipsets from being registered.
145 #if DETECT_VGA_CLASS_ONLY
146 #define INTELFB_CLASS_MASK ~0 << 8
148 #define INTELFB_CLASS_MASK 0
151 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
152 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_830M, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_830M },
153 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_845G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_845G },
154 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_85XGM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_85XGM },
155 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_865G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_865G },
156 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
161 static int num_registered = 0;
164 static struct fb_ops intel_fb_ops = {
165 .owner = THIS_MODULE,
166 .fb_check_var = intelfb_check_var,
167 .fb_set_par = intelfb_set_par,
168 .fb_setcolreg = intelfb_setcolreg,
169 .fb_blank = intelfb_blank,
170 .fb_pan_display = intelfb_pan_display,
171 .fb_fillrect = intelfb_fillrect,
172 .fb_copyarea = intelfb_copyarea,
173 .fb_imageblit = intelfb_imageblit,
174 .fb_cursor = intelfb_cursor,
175 .fb_sync = intelfb_sync,
176 .fb_ioctl = intelfb_ioctl
179 /* PCI driver module table */
180 static struct pci_driver intelfb_driver = {
181 .name = "Intel(R) " SUPPORTED_CHIPSETS " Framebuffer Driver",
182 .id_table = intelfb_pci_table,
183 .probe = intelfb_pci_register,
184 .remove = __devexit_p(intelfb_pci_unregister)
187 /* Module description/parameters */
188 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
189 "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
191 "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
192 MODULE_LICENSE("Dual BSD/GPL");
193 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
195 static int accel __initdata = 1;
196 static int vram __initdata = 4;
197 static int hwcursor __initdata = 1;
198 static int mtrr __initdata = 1;
199 static int fixed __initdata = 0;
200 static int noinit __initdata = 0;
201 static int noregister __initdata = 0;
202 static int probeonly __initdata = 0;
203 static int idonly __initdata = 0;
204 static int bailearly __initdata = 0;
205 static char *mode __initdata = NULL;
207 module_param(accel, bool, S_IRUGO);
208 MODULE_PARM_DESC(accel, "Enable console acceleration");
209 module_param(vram, int, S_IRUGO);
210 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
211 module_param(hwcursor, bool, S_IRUGO);
212 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
213 module_param(mtrr, bool, S_IRUGO);
214 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
215 module_param(fixed, bool, S_IRUGO);
216 MODULE_PARM_DESC(fixed, "Disable mode switching");
217 module_param(noinit, bool, 0);
218 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
219 module_param(noregister, bool, 0);
220 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
221 module_param(probeonly, bool, 0);
222 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
223 module_param(idonly, bool, 0);
224 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
225 module_param(bailearly, bool, 0);
226 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
227 module_param(mode, charp, S_IRUGO);
228 MODULE_PARM_DESC(mode,
229 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
232 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
233 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), NULL, 0)
234 #define OPT_STRVAL(opt, name) (opt + strlen(name))
236 static __inline__ char *
237 get_opt_string(const char *this_opt, const char *name)
243 p = OPT_STRVAL(this_opt, name);
245 while (p[i] && p[i] != ' ' && p[i] != ',')
247 ret = kmalloc(i + 1, GFP_KERNEL);
255 static __inline__ int
256 get_opt_int(const char *this_opt, const char *name, int *ret)
261 if (!OPT_EQUAL(this_opt, name))
264 *ret = OPT_INTVAL(this_opt, name);
268 static __inline__ int
269 get_opt_bool(const char *this_opt, const char *name, int *ret)
274 if (OPT_EQUAL(this_opt, name)) {
275 if (this_opt[strlen(name)] == '=')
276 *ret = simple_strtoul(this_opt + strlen(name) + 1,
281 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
290 intelfb_setup(char *options)
294 DBG_MSG("intelfb_setup\n");
296 if (!options || !*options) {
297 DBG_MSG("no options\n");
300 DBG_MSG("options: %s\n", options);
303 * These are the built-in options analogous to the module parameters
308 * video=intelfb:[mode][,<param>=<val>] ...
312 * video=intelfb:1024x768-16@75,accel=0
315 while ((this_opt = strsep(&options, ","))) {
318 if (get_opt_bool(this_opt, "accel", &accel))
320 else if (get_opt_int(this_opt, "vram", &vram))
322 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
324 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
326 else if (get_opt_bool(this_opt, "fixed", &fixed))
328 else if (get_opt_bool(this_opt, "init", &noinit))
330 else if (OPT_EQUAL(this_opt, "mode="))
331 mode = get_opt_string(this_opt, "mode=");
348 DBG_MSG("intelfb_init\n");
350 INF_MSG("Framebuffer driver for "
351 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
352 INF_MSG("Version " INTELFB_VERSION "\n");
358 if (fb_get_options("intelfb", &option))
360 intelfb_setup(option);
363 return pci_register_driver(&intelfb_driver);
369 DBG_MSG("intelfb_exit\n");
370 pci_unregister_driver(&intelfb_driver);
373 module_init(intelfb_init);
374 module_exit(intelfb_exit);
376 /***************************************************************
377 * mtrr support functions *
378 ***************************************************************/
381 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
383 dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
384 dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
385 if (dinfo->mtrr_reg < 0) {
386 ERR_MSG("unable to set MTRR\n");
391 static inline void unset_mtrr(struct intelfb_info *dinfo)
394 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
395 dinfo->aperture.size);
398 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
400 #define unset_mtrr(x) do { } while (0)
401 #endif /* CONFIG_MTRR */
403 /***************************************************************
404 * driver init / cleanup *
405 ***************************************************************/
408 cleanup(struct intelfb_info *dinfo)
410 DBG_MSG("cleanup\n");
415 fb_dealloc_cmap(&dinfo->info->cmap);
416 kfree(dinfo->info->pixmap.addr);
418 if (dinfo->registered)
419 unregister_framebuffer(dinfo->info);
423 if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
424 agp_unbind_memory(dinfo->gtt_fb_mem);
425 agp_free_memory(dinfo->gtt_fb_mem);
427 if (dinfo->gtt_cursor_mem) {
428 agp_unbind_memory(dinfo->gtt_cursor_mem);
429 agp_free_memory(dinfo->gtt_cursor_mem);
431 if (dinfo->gtt_ring_mem) {
432 agp_unbind_memory(dinfo->gtt_ring_mem);
433 agp_free_memory(dinfo->gtt_ring_mem);
436 if (dinfo->mmio_base)
437 iounmap((void __iomem *)dinfo->mmio_base);
438 if (dinfo->aperture.virtual)
439 iounmap((void __iomem *)dinfo->aperture.virtual);
441 if (dinfo->mmio_base_phys)
442 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
443 if (dinfo->aperture.physical)
444 release_mem_region(dinfo->aperture.physical,
445 dinfo->aperture.size);
446 framebuffer_release(dinfo->info);
449 #define bailout(dinfo) do { \
450 DBG_MSG("bailout\n"); \
452 INF_MSG("Not going to register framebuffer, exiting...\n"); \
458 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
460 struct fb_info *info;
461 struct intelfb_info *dinfo;
463 int aperture_size, stolen_size;
464 struct agp_kern_info gtt_info;
467 struct agp_bridge_data *bridge;
468 int aperture_bar = 0;
471 DBG_MSG("intelfb_pci_register\n");
474 if (num_registered != 1) {
475 ERR_MSG("Attempted to register %d devices "
476 "(should be only 1).\n", num_registered);
480 info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
482 ERR_MSG("Could not allocate memory for intelfb_info.\n");
485 if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
486 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
493 dinfo->fbops = &intel_fb_ops;
496 /* Reserve pixmap space. */
497 info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
498 if (info->pixmap.addr == NULL) {
499 ERR_MSG("Cannot reserve pixmap memory.\n");
502 memset(info->pixmap.addr, 0, 64 * 1024);
504 /* set early this option because it could be changed by tv encoder
506 dinfo->fixed_mode = fixed;
509 if ((err = pci_enable_device(pdev))) {
510 ERR_MSG("Cannot enable device.\n");
515 /* Set base addresses. */
516 if (ent->device == PCI_DEVICE_ID_INTEL_915G) {
519 /* Disable HW cursor on 915G (not implemented yet) */
522 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
523 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
524 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
525 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
526 (unsigned long long)pci_resource_start(pdev, aperture_bar),
527 (unsigned long long)pci_resource_len(pdev, aperture_bar),
528 (unsigned long long)pci_resource_start(pdev, mmio_bar),
529 (unsigned long long)pci_resource_len(pdev, mmio_bar));
531 /* Reserve the fb and MMIO regions */
532 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
533 INTELFB_MODULE_NAME)) {
534 ERR_MSG("Cannot reserve FB region.\n");
538 if (!request_mem_region(dinfo->mmio_base_phys,
540 INTELFB_MODULE_NAME)) {
541 ERR_MSG("Cannot reserve MMIO region.\n");
546 /* Map the fb and MMIO regions */
547 dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
548 (dinfo->aperture.physical, dinfo->aperture.size);
549 if (!dinfo->aperture.virtual) {
550 ERR_MSG("Cannot remap FB region.\n");
555 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
557 if (!dinfo->mmio_base) {
558 ERR_MSG("Cannot remap MMIO region.\n");
563 /* Get the chipset info. */
564 dinfo->pci_chipset = pdev->device;
566 if (intelfbhw_get_chipset(pdev, &dinfo->name, &dinfo->chipset,
572 if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
577 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
578 "stolen memory %dkB\n",
579 pdev->bus->number, PCI_SLOT(pdev->devfn),
580 PCI_FUNC(pdev->devfn), dinfo->name,
581 BtoMB(aperture_size), BtoKB(stolen_size));
583 /* Set these from the options. */
584 dinfo->accel = accel;
585 dinfo->hwcursor = hwcursor;
587 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
588 INF_MSG("Acceleration is not supported for the %s chipset.\n",
593 /* Framebuffer parameters - Use all the stolen memory if >= vram */
594 if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
595 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
596 dinfo->fbmem_gart = 0;
598 dinfo->fb.size = MB(vram);
599 dinfo->fbmem_gart = 1;
602 /* Allocate space for the ring buffer and HW cursor if enabled. */
604 dinfo->ring.size = RINGBUFFER_SIZE;
605 dinfo->ring_tail_mask = dinfo->ring.size - 1;
607 if (dinfo->hwcursor) {
608 dinfo->cursor.size = HW_CURSOR_SIZE;
611 /* Use agpgart to manage the GATT */
612 if (!(bridge = agp_backend_acquire(pdev))) {
613 ERR_MSG("cannot acquire agp\n");
618 /* get the current gatt info */
619 if (agp_copy_info(bridge, >t_info)) {
620 ERR_MSG("cannot get agp info\n");
621 agp_backend_release(bridge);
626 /* set the mem offsets - set them after the already used pages */
628 dinfo->ring.offset = (stolen_size >> 12)
629 + gtt_info.current_memory;
631 if (dinfo->hwcursor) {
632 dinfo->cursor.offset = (stolen_size >> 12) +
633 + gtt_info.current_memory + (dinfo->ring.size >> 12);
635 if (dinfo->fbmem_gart) {
636 dinfo->fb.offset = (stolen_size >> 12) +
637 + gtt_info.current_memory + (dinfo->ring.size >> 12)
638 + (dinfo->cursor.size >> 12);
641 /* Allocate memories (which aren't stolen) */
643 if (!(dinfo->gtt_ring_mem =
644 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
645 AGP_NORMAL_MEMORY))) {
646 ERR_MSG("cannot allocate ring buffer memory\n");
647 agp_backend_release(bridge);
651 if (agp_bind_memory(dinfo->gtt_ring_mem,
652 dinfo->ring.offset)) {
653 ERR_MSG("cannot bind ring buffer memory\n");
654 agp_backend_release(bridge);
658 dinfo->ring.physical = dinfo->aperture.physical
659 + (dinfo->ring.offset << 12);
660 dinfo->ring.virtual = dinfo->aperture.virtual
661 + (dinfo->ring.offset << 12);
662 dinfo->ring_head = dinfo->ring.virtual;
664 if (dinfo->hwcursor) {
665 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
667 if (!(dinfo->gtt_cursor_mem =
668 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
670 ERR_MSG("cannot allocate cursor memory\n");
671 agp_backend_release(bridge);
675 if (agp_bind_memory(dinfo->gtt_cursor_mem,
676 dinfo->cursor.offset)) {
677 ERR_MSG("cannot bind cursor memory\n");
678 agp_backend_release(bridge);
683 dinfo->cursor.physical
684 = dinfo->gtt_cursor_mem->physical;
686 dinfo->cursor.physical = dinfo->aperture.physical
687 + (dinfo->cursor.offset << 12);
688 dinfo->cursor.virtual = dinfo->aperture.virtual
689 + (dinfo->cursor.offset << 12);
691 if (dinfo->fbmem_gart) {
692 if (!(dinfo->gtt_fb_mem =
693 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
694 AGP_NORMAL_MEMORY))) {
695 WRN_MSG("cannot allocate framebuffer memory - use "
697 dinfo->fbmem_gart = 0;
699 if (agp_bind_memory(dinfo->gtt_fb_mem,
701 WRN_MSG("cannot bind framebuffer memory - use "
703 dinfo->fbmem_gart = 0;
707 /* update framebuffer memory parameters */
708 if (!dinfo->fbmem_gart)
709 dinfo->fb.offset = 0; /* starts at offset 0 */
710 dinfo->fb.physical = dinfo->aperture.physical
711 + (dinfo->fb.offset << 12);
712 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
713 dinfo->fb_start = dinfo->fb.offset << 12;
715 /* release agpgart */
716 agp_backend_release(bridge);
721 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
722 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
723 (u32 __iomem ) dinfo->fb.virtual);
724 DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
725 dinfo->mmio_base_phys, INTEL_REG_SIZE,
726 (u32 __iomem) dinfo->mmio_base);
727 DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
728 dinfo->ring.physical, dinfo->ring.size,
729 (u32 __iomem ) dinfo->ring.virtual);
730 DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
731 dinfo->cursor.physical, dinfo->cursor.size,
732 (u32 __iomem ) dinfo->cursor.virtual, dinfo->cursor.offset,
733 dinfo->cursor.physical);
735 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
736 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
737 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
743 * Check if the LVDS port or any DVO ports are enabled. If so,
744 * don't allow mode switching
746 dvo = intelfbhw_check_non_crt(dinfo);
748 dinfo->fixed_mode = 1;
749 WRN_MSG("Non-CRT device is enabled ( ");
753 s = intelfbhw_dvo_to_string(1 << i);
760 printk("). Disabling mode switching.\n");
766 if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
767 ERR_MSG("Video mode must be programmed at boot time.\n");
775 /* Initialise dinfo and related data. */
776 /* If an initial mode was programmed at boot time, get its details. */
777 if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
778 get_initial_mode(dinfo);
783 if (FIXED_MODE(dinfo)) {
784 /* remap fb address */
785 update_dinfo(dinfo, &dinfo->initial_var);
792 if (intelfb_set_fbinfo(dinfo)) {
800 for (i = 0; i < 16; i++) {
802 dinfo->palette[i].red = default_red[j];
803 dinfo->palette[i].green = default_grn[j];
804 dinfo->palette[i].blue = default_blu[j];
810 pci_set_drvdata(pdev, dinfo);
812 /* Save the initial register state. */
813 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
814 bailearly > 6 ? bailearly - 6 : 0);
816 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
820 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
825 /* Cursor initialisation */
826 if (dinfo->hwcursor) {
827 intelfbhw_cursor_init(dinfo);
828 intelfbhw_cursor_reset(dinfo);
834 /* 2d acceleration init */
836 intelfbhw_2d_start(dinfo);
844 if (register_framebuffer(dinfo->info) < 0) {
845 ERR_MSG("Cannot register framebuffer.\n");
850 dinfo->registered = 1;
855 fb_dealloc_cmap(&info->cmap);
857 framebuffer_release(info);
861 static void __devexit
862 intelfb_pci_unregister(struct pci_dev *pdev)
864 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
866 DBG_MSG("intelfb_pci_unregister\n");
873 pci_set_drvdata(pdev, NULL);
876 /***************************************************************
878 ***************************************************************/
881 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
883 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
884 var->bits_per_pixel, var->green.length);
886 switch (var->bits_per_pixel) {
888 return (var->green.length == 6) ? 16 : 15;
892 return var->bits_per_pixel;
897 static __inline__ int
898 var_to_refresh(const struct fb_var_screeninfo *var)
900 int xtot = var->xres + var->left_margin + var->right_margin +
902 int ytot = var->yres + var->upper_margin + var->lower_margin +
905 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
908 /***************************************************************
909 * Various intialisation functions *
910 ***************************************************************/
912 static void __devinit
913 get_initial_mode(struct intelfb_info *dinfo)
915 struct fb_var_screeninfo *var;
918 DBG_MSG("get_initial_mode\n");
920 dinfo->initial_vga = 1;
921 dinfo->initial_fb_base = screen_info.lfb_base;
922 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
923 dinfo->initial_pitch = screen_info.lfb_linelength;
925 var = &dinfo->initial_var;
926 memset(var, 0, sizeof(*var));
927 var->xres = screen_info.lfb_width;
928 var->yres = screen_info.lfb_height;
929 var->bits_per_pixel = screen_info.lfb_depth;
930 switch (screen_info.lfb_depth) {
932 var->bits_per_pixel = 16;
935 var->bits_per_pixel = 32;
939 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
940 dinfo->initial_fb_base, dinfo->initial_video_ram,
941 BtoKB(dinfo->initial_video_ram));
943 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
944 var->xres, var->yres, var->bits_per_pixel,
945 dinfo->initial_pitch);
947 /* Dummy timing values (assume 60Hz) */
948 var->left_margin = (var->xres / 8) & 0xf8;
949 var->right_margin = 32;
950 var->upper_margin = 16;
951 var->lower_margin = 4;
952 var->hsync_len = (var->xres / 8) & 0xf8;
955 xtot = var->xres + var->left_margin +
956 var->right_margin + var->hsync_len;
957 ytot = var->yres + var->upper_margin +
958 var->lower_margin + var->vsync_len;
959 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
964 if (var->bits_per_pixel > 8) {
965 var->red.offset = screen_info.red_pos;
966 var->red.length = screen_info.red_size;
967 var->green.offset = screen_info.green_pos;
968 var->green.length = screen_info.green_size;
969 var->blue.offset = screen_info.blue_pos;
970 var->blue.length = screen_info.blue_size;
971 var->transp.offset = screen_info.rsvd_pos;
972 var->transp.length = screen_info.rsvd_size;
975 var->green.length = 8;
976 var->blue.length = 8;
981 intelfb_init_var(struct intelfb_info *dinfo)
983 struct fb_var_screeninfo *var;
986 DBG_MSG("intelfb_init_var\n");
988 var = &dinfo->info->var;
989 if (FIXED_MODE(dinfo)) {
990 memcpy(var, &dinfo->initial_var,
991 sizeof(struct fb_var_screeninfo));
995 msrc = fb_find_mode(var, dinfo->info, mode,
996 vesa_modes, VESA_MODEDB_SIZE,
1002 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1003 vesa_modes, VESA_MODEDB_SIZE,
1009 ERR_MSG("Cannot find a suitable video mode.\n");
1013 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1014 var->bits_per_pixel, var_to_refresh(var));
1016 DBG_MSG("Initial video mode is from %d.\n", msrc);
1018 #if ALLOCATE_FOR_PANNING
1019 /* Allow use of half of the video ram for panning */
1020 var->xres_virtual = var->xres;
1022 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1023 if (var->yres_virtual < var->yres)
1024 var->yres_virtual = var->yres;
1026 var->yres_virtual = var->yres;
1030 var->accel_flags |= FB_ACCELF_TEXT;
1032 var->accel_flags &= ~FB_ACCELF_TEXT;
1037 static int __devinit
1038 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1040 struct fb_info *info = dinfo->info;
1042 DBG_MSG("intelfb_set_fbinfo\n");
1044 info->flags = FBINFO_FLAG_DEFAULT;
1045 info->fbops = &intel_fb_ops;
1046 info->pseudo_palette = dinfo->pseudo_palette;
1048 info->pixmap.size = 64*1024;
1049 info->pixmap.buf_align = 8;
1050 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1052 if (intelfb_init_var(dinfo))
1055 info->pixmap.scan_align = 1;
1057 update_dinfo(dinfo, &info->var);
1062 /* Update dinfo to match the active video mode. */
1064 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1066 DBG_MSG("update_dinfo\n");
1068 dinfo->bpp = var->bits_per_pixel;
1069 dinfo->depth = intelfb_var_to_depth(var);
1070 dinfo->xres = var->xres;
1071 dinfo->yres = var->xres;
1072 dinfo->pixclock = var->pixclock;
1074 intelfb_get_fix(&dinfo->info->fix, dinfo->info);
1076 switch (dinfo->bpp) {
1078 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1079 dinfo->pitch = var->xres_virtual;
1082 dinfo->visual = FB_VISUAL_TRUECOLOR;
1083 dinfo->pitch = var->xres_virtual * 2;
1086 dinfo->visual = FB_VISUAL_TRUECOLOR;
1087 dinfo->pitch = var->xres_virtual * 4;
1091 /* Make sure the line length is a aligned correctly. */
1092 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1094 if (FIXED_MODE(dinfo))
1095 dinfo->pitch = dinfo->initial_pitch;
1097 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1098 dinfo->info->fix.line_length = dinfo->pitch;
1099 dinfo->info->fix.visual = dinfo->visual;
1102 /* fbops functions */
1105 intelfb_get_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
1107 struct intelfb_info *dinfo = GET_DINFO(info);
1109 DBG_MSG("intelfb_get_fix\n");
1111 memset(fix, 0, sizeof(*fix));
1112 strcpy(fix->id, dinfo->name);
1113 fix->smem_start = dinfo->fb.physical;
1114 fix->smem_len = dinfo->fb.size;
1115 fix->type = FB_TYPE_PACKED_PIXELS;
1117 fix->visual = dinfo->visual;
1121 fix->line_length = dinfo->pitch;
1122 fix->mmio_start = dinfo->mmio_base_phys;
1123 fix->mmio_len = INTEL_REG_SIZE;
1124 fix->accel = FB_ACCEL_I830;
1128 /***************************************************************
1130 ***************************************************************/
1133 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1136 struct fb_var_screeninfo v;
1137 struct intelfb_info *dinfo;
1138 static int first = 1;
1140 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1142 dinfo = GET_DINFO(info);
1144 if (intelfbhw_validate_mode(dinfo, var) != 0)
1149 /* Check for a supported bpp. */
1150 if (v.bits_per_pixel <= 8) {
1151 v.bits_per_pixel = 8;
1152 } else if (v.bits_per_pixel <= 16) {
1153 if (v.bits_per_pixel == 16)
1155 v.bits_per_pixel = 16;
1156 } else if (v.bits_per_pixel <= 32) {
1157 v.bits_per_pixel = 32;
1161 change_var = ((info->var.xres != var->xres) ||
1162 (info->var.yres != var->yres) ||
1163 (info->var.xres_virtual != var->xres_virtual) ||
1164 (info->var.yres_virtual != var->yres_virtual) ||
1165 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1166 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1167 memcmp(&info->var.green, &var->green,
1168 sizeof(var->green)) ||
1169 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1171 if (FIXED_MODE(dinfo) &&
1173 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1174 var->yres_virtual < dinfo->initial_var.yres ||
1175 var->xoffset || var->nonstd)) {
1177 ERR_MSG("Changing the video mode is not supported.\n");
1183 switch (intelfb_var_to_depth(&v)) {
1185 v.red.offset = v.green.offset = v.blue.offset = 0;
1186 v.red.length = v.green.length = v.blue.length = 8;
1187 v.transp.offset = v.transp.length = 0;
1193 v.red.length = v.green.length = v.blue.length = 5;
1194 v.transp.offset = v.transp.length = 0;
1203 v.transp.offset = v.transp.length = 0;
1209 v.red.length = v.green.length = v.blue.length = 8;
1210 v.transp.offset = v.transp.length = 0;
1216 v.red.length = v.green.length = v.blue.length = 8;
1217 v.transp.offset = 24;
1218 v.transp.length = 8;
1227 if (v.xoffset > v.xres_virtual - v.xres)
1228 v.xoffset = v.xres_virtual - v.xres;
1229 if (v.yoffset > v.yres_virtual - v.yres)
1230 v.yoffset = v.yres_virtual - v.yres;
1232 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1233 v.transp.msb_right = 0;
1241 intelfb_set_par(struct fb_info *info)
1243 struct intelfb_hwstate *hw;
1244 struct intelfb_info *dinfo = GET_DINFO(info);
1246 if (FIXED_MODE(dinfo)) {
1247 ERR_MSG("Changing the video mode is not supported.\n");
1251 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1255 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1256 info->var.yres, info->var.bits_per_pixel);
1258 intelfb_blank(FB_BLANK_POWERDOWN, info);
1261 intelfbhw_2d_stop(dinfo);
1263 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1264 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1266 if (intelfbhw_program_mode(dinfo, hw, 0))
1270 intelfbhw_read_hw_state(dinfo, hw, 0);
1271 intelfbhw_print_hw_state(dinfo, hw);
1274 update_dinfo(dinfo, &info->var);
1277 intelfbhw_2d_start(dinfo);
1279 intelfb_pan_display(&info->var, info);
1281 intelfb_blank(FB_BLANK_UNBLANK, info);
1283 if (ACCEL(dinfo, info)) {
1284 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1285 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1286 FBINFO_HWACCEL_IMAGEBLIT;
1288 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1298 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1299 unsigned blue, unsigned transp, struct fb_info *info)
1301 struct intelfb_info *dinfo = GET_DINFO(info);
1304 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1310 switch (dinfo->depth) {
1317 dinfo->palette[regno].red = red;
1318 dinfo->palette[regno].green = green;
1319 dinfo->palette[regno].blue = blue;
1321 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1326 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1327 ((green & 0xf800) >> 6) |
1328 ((blue & 0xf800) >> 11);
1331 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1332 ((green & 0xfc00) >> 5) |
1333 ((blue & 0xf800) >> 11);
1336 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1338 ((blue & 0xff00) >> 8);
1345 intelfb_blank(int blank, struct fb_info *info)
1347 intelfbhw_do_blank(blank, info);
1352 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1354 intelfbhw_pan_display(var, info);
1358 /* When/if we have our own ioctls. */
1360 intelfb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
1361 unsigned long arg, struct fb_info *info)
1369 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1371 struct intelfb_info *dinfo = GET_DINFO(info);
1375 DBG_MSG("intelfb_fillrect\n");
1378 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1379 return cfb_fillrect(info, rect);
1381 if (rect->rop == ROP_COPY)
1382 rop = PAT_ROP_GXCOPY;
1384 rop = PAT_ROP_GXXOR;
1386 if (dinfo->depth != 8)
1387 color = dinfo->pseudo_palette[rect->color];
1389 color = rect->color;
1391 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1392 rect->width, rect->height, color,
1393 dinfo->pitch, info->var.bits_per_pixel,
1398 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1400 struct intelfb_info *dinfo = GET_DINFO(info);
1403 DBG_MSG("intelfb_copyarea\n");
1406 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1407 return cfb_copyarea(info, region);
1409 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1410 region->dy, region->width, region->height,
1411 dinfo->pitch, info->var.bits_per_pixel);
1415 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1417 struct intelfb_info *dinfo = GET_DINFO(info);
1418 u32 fgcolor, bgcolor;
1421 DBG_MSG("intelfb_imageblit\n");
1424 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1425 || image->depth != 1)
1426 return cfb_imageblit(info, image);
1428 if (dinfo->depth != 8) {
1429 fgcolor = dinfo->pseudo_palette[image->fg_color];
1430 bgcolor = dinfo->pseudo_palette[image->bg_color];
1432 fgcolor = image->fg_color;
1433 bgcolor = image->bg_color;
1436 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1437 image->height, image->data,
1438 image->dx, image->dy,
1439 dinfo->pitch, info->var.bits_per_pixel))
1440 return cfb_imageblit(info, image);
1444 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1446 struct intelfb_info *dinfo = GET_DINFO(info);
1449 DBG_MSG("intelfb_cursor\n");
1452 if (!dinfo->hwcursor)
1453 return soft_cursor(info, cursor);
1455 intelfbhw_cursor_hide(dinfo);
1457 /* If XFree killed the cursor - restore it */
1458 if (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12) {
1461 DBG_MSG("the cursor was killed - restore it !!\n");
1462 DBG_MSG("size %d, %d pos %d, %d\n",
1463 cursor->image.width, cursor->image.height,
1464 cursor->image.dx, cursor->image.dy);
1466 intelfbhw_cursor_init(dinfo);
1467 intelfbhw_cursor_reset(dinfo);
1468 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1471 if (dinfo->depth != 8) {
1472 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1473 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1475 fg = cursor->image.fg_color;
1476 bg = cursor->image.bg_color;
1478 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1479 intelfbhw_cursor_load(dinfo, cursor->image.width,
1480 cursor->image.height,
1484 intelfbhw_cursor_show(dinfo);
1488 if (cursor->set & FB_CUR_SETPOS) {
1491 dx = cursor->image.dx - info->var.xoffset;
1492 dy = cursor->image.dy - info->var.yoffset;
1494 intelfbhw_cursor_setpos(dinfo, dx, dy);
1497 if (cursor->set & FB_CUR_SETSIZE) {
1498 if (cursor->image.width > 64 || cursor->image.height > 64)
1501 intelfbhw_cursor_reset(dinfo);
1504 if (cursor->set & FB_CUR_SETCMAP) {
1507 if (dinfo->depth != 8) {
1508 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1509 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1511 fg = cursor->image.fg_color;
1512 bg = cursor->image.bg_color;
1515 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1518 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1519 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1520 u32 size = s_pitch * cursor->image.height;
1521 u8 *dat = (u8 *) cursor->image.data;
1522 u8 *msk = (u8 *) cursor->mask;
1526 if (cursor->image.depth != 1)
1529 switch (cursor->rop) {
1531 for (i = 0; i < size; i++)
1532 src[i] = dat[i] ^ msk[i];
1536 for (i = 0; i < size; i++)
1537 src[i] = dat[i] & msk[i];
1541 /* save the bitmap to restore it when XFree will
1542 make the cursor dirty */
1543 memcpy(dinfo->cursor_src, src, size);
1545 intelfbhw_cursor_load(dinfo, cursor->image.width,
1546 cursor->image.height, src);
1550 intelfbhw_cursor_show(dinfo);
1556 intelfb_sync(struct fb_info *info)
1558 struct intelfb_info *dinfo = GET_DINFO(info);
1561 DBG_MSG("intelfb_sync\n");
1564 if (dinfo->ring_lockup)
1567 intelfbhw_do_sync(dinfo);