4 * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
5 * 945G 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/ioport.h>
121 #include <linux/init.h>
122 #include <linux/pci.h>
123 #include <linux/vmalloc.h>
124 #include <linux/pagemap.h>
129 #include <asm/mtrr.h>
133 #include "intelfbhw.h"
135 static void __devinit get_initial_mode(struct intelfb_info *dinfo);
136 static void update_dinfo(struct intelfb_info *dinfo,
137 struct fb_var_screeninfo *var);
138 static int intelfb_check_var(struct fb_var_screeninfo *var,
139 struct fb_info *info);
140 static int intelfb_set_par(struct fb_info *info);
141 static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
142 unsigned blue, unsigned transp,
143 struct fb_info *info);
145 static int intelfb_blank(int blank, struct fb_info *info);
146 static int intelfb_pan_display(struct fb_var_screeninfo *var,
147 struct fb_info *info);
149 static void intelfb_fillrect(struct fb_info *info,
150 const struct fb_fillrect *rect);
151 static void intelfb_copyarea(struct fb_info *info,
152 const struct fb_copyarea *region);
153 static void intelfb_imageblit(struct fb_info *info,
154 const struct fb_image *image);
155 static int intelfb_cursor(struct fb_info *info,
156 struct fb_cursor *cursor);
158 static int intelfb_sync(struct fb_info *info);
160 static int intelfb_ioctl(struct fb_info *info,
161 unsigned int cmd, unsigned long arg);
163 static int __devinit intelfb_pci_register(struct pci_dev *pdev,
164 const struct pci_device_id *ent);
165 static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
166 static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
169 * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
170 * mobile chipsets from being registered.
172 #if DETECT_VGA_CLASS_ONLY
173 #define INTELFB_CLASS_MASK ~0 << 8
175 #define INTELFB_CLASS_MASK 0
178 static struct pci_device_id intelfb_pci_table[] __devinitdata = {
179 { 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 },
180 { 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 },
181 { 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 },
182 { 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 },
183 { 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 },
184 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915GM },
185 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945G },
190 static int num_registered = 0;
193 static struct fb_ops intel_fb_ops = {
194 .owner = THIS_MODULE,
195 .fb_check_var = intelfb_check_var,
196 .fb_set_par = intelfb_set_par,
197 .fb_setcolreg = intelfb_setcolreg,
198 .fb_blank = intelfb_blank,
199 .fb_pan_display = intelfb_pan_display,
200 .fb_fillrect = intelfb_fillrect,
201 .fb_copyarea = intelfb_copyarea,
202 .fb_imageblit = intelfb_imageblit,
203 .fb_cursor = intelfb_cursor,
204 .fb_sync = intelfb_sync,
205 .fb_ioctl = intelfb_ioctl
208 /* PCI driver module table */
209 static struct pci_driver intelfb_driver = {
211 .id_table = intelfb_pci_table,
212 .probe = intelfb_pci_register,
213 .remove = __devexit_p(intelfb_pci_unregister)
216 /* Module description/parameters */
217 MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
218 "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
220 "Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
221 MODULE_LICENSE("Dual BSD/GPL");
222 MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
224 static int accel = 1;
226 static int hwcursor = 0;
228 static int fixed = 0;
229 static int noinit = 0;
230 static int noregister = 0;
231 static int probeonly = 0;
232 static int idonly = 0;
233 static int bailearly = 0;
234 static int voffset = 48;
235 static char *mode = NULL;
237 module_param(accel, bool, S_IRUGO);
238 MODULE_PARM_DESC(accel, "Enable hardware acceleration");
239 module_param(vram, int, S_IRUGO);
240 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
241 module_param(voffset, int, S_IRUGO);
242 MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
243 module_param(hwcursor, bool, S_IRUGO);
244 MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
245 module_param(mtrr, bool, S_IRUGO);
246 MODULE_PARM_DESC(mtrr, "Enable MTRR support");
247 module_param(fixed, bool, S_IRUGO);
248 MODULE_PARM_DESC(fixed, "Disable mode switching");
249 module_param(noinit, bool, 0);
250 MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
251 module_param(noregister, bool, 0);
252 MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
253 module_param(probeonly, bool, 0);
254 MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
255 module_param(idonly, bool, 0);
256 MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
257 module_param(bailearly, bool, 0);
258 MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
259 module_param(mode, charp, S_IRUGO);
260 MODULE_PARM_DESC(mode,
261 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
264 #define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
265 #define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), NULL, 0)
266 #define OPT_STRVAL(opt, name) (opt + strlen(name))
268 static __inline__ char *
269 get_opt_string(const char *this_opt, const char *name)
275 p = OPT_STRVAL(this_opt, name);
277 while (p[i] && p[i] != ' ' && p[i] != ',')
279 ret = kmalloc(i + 1, GFP_KERNEL);
287 static __inline__ int
288 get_opt_int(const char *this_opt, const char *name, int *ret)
293 if (!OPT_EQUAL(this_opt, name))
296 *ret = OPT_INTVAL(this_opt, name);
300 static __inline__ int
301 get_opt_bool(const char *this_opt, const char *name, int *ret)
306 if (OPT_EQUAL(this_opt, name)) {
307 if (this_opt[strlen(name)] == '=')
308 *ret = simple_strtoul(this_opt + strlen(name) + 1,
313 if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
322 intelfb_setup(char *options)
326 DBG_MSG("intelfb_setup\n");
328 if (!options || !*options) {
329 DBG_MSG("no options\n");
332 DBG_MSG("options: %s\n", options);
335 * These are the built-in options analogous to the module parameters
340 * video=intelfb:[mode][,<param>=<val>] ...
344 * video=intelfb:1024x768-16@75,accel=0
347 while ((this_opt = strsep(&options, ","))) {
350 if (get_opt_bool(this_opt, "accel", &accel))
352 else if (get_opt_int(this_opt, "vram", &vram))
354 else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
356 else if (get_opt_bool(this_opt, "mtrr", &mtrr))
358 else if (get_opt_bool(this_opt, "fixed", &fixed))
360 else if (get_opt_bool(this_opt, "init", &noinit))
362 else if (OPT_EQUAL(this_opt, "mode="))
363 mode = get_opt_string(this_opt, "mode=");
380 DBG_MSG("intelfb_init\n");
382 INF_MSG("Framebuffer driver for "
383 "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
384 INF_MSG("Version " INTELFB_VERSION "\n");
390 if (fb_get_options("intelfb", &option))
392 intelfb_setup(option);
395 return pci_register_driver(&intelfb_driver);
401 DBG_MSG("intelfb_exit\n");
402 pci_unregister_driver(&intelfb_driver);
405 module_init(intelfb_init);
406 module_exit(intelfb_exit);
408 /***************************************************************
409 * mtrr support functions *
410 ***************************************************************/
413 static inline void __devinit set_mtrr(struct intelfb_info *dinfo)
415 dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
416 dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
417 if (dinfo->mtrr_reg < 0) {
418 ERR_MSG("unable to set MTRR\n");
423 static inline void unset_mtrr(struct intelfb_info *dinfo)
426 mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
427 dinfo->aperture.size);
430 #define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
432 #define unset_mtrr(x) do { } while (0)
433 #endif /* CONFIG_MTRR */
435 /***************************************************************
436 * driver init / cleanup *
437 ***************************************************************/
440 cleanup(struct intelfb_info *dinfo)
442 DBG_MSG("cleanup\n");
447 fb_dealloc_cmap(&dinfo->info->cmap);
448 kfree(dinfo->info->pixmap.addr);
450 if (dinfo->registered)
451 unregister_framebuffer(dinfo->info);
455 if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
456 agp_unbind_memory(dinfo->gtt_fb_mem);
457 agp_free_memory(dinfo->gtt_fb_mem);
459 if (dinfo->gtt_cursor_mem) {
460 agp_unbind_memory(dinfo->gtt_cursor_mem);
461 agp_free_memory(dinfo->gtt_cursor_mem);
463 if (dinfo->gtt_ring_mem) {
464 agp_unbind_memory(dinfo->gtt_ring_mem);
465 agp_free_memory(dinfo->gtt_ring_mem);
468 if (dinfo->mmio_base)
469 iounmap((void __iomem *)dinfo->mmio_base);
470 if (dinfo->aperture.virtual)
471 iounmap((void __iomem *)dinfo->aperture.virtual);
473 if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
474 release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
475 if (dinfo->flag & INTELFB_FB_ACQUIRED)
476 release_mem_region(dinfo->aperture.physical,
477 dinfo->aperture.size);
478 framebuffer_release(dinfo->info);
481 #define bailout(dinfo) do { \
482 DBG_MSG("bailout\n"); \
484 INF_MSG("Not going to register framebuffer, exiting...\n"); \
490 intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
492 struct fb_info *info;
493 struct intelfb_info *dinfo;
495 int aperture_size, stolen_size;
496 struct agp_kern_info gtt_info;
499 struct agp_bridge_data *bridge;
500 int aperture_bar = 0;
504 DBG_MSG("intelfb_pci_register\n");
507 if (num_registered != 1) {
508 ERR_MSG("Attempted to register %d devices "
509 "(should be only 1).\n", num_registered);
513 info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
515 ERR_MSG("Could not allocate memory for intelfb_info.\n");
518 if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
519 ERR_MSG("Could not allocate cmap for intelfb_info.\n");
526 dinfo->fbops = &intel_fb_ops;
529 /* Reserve pixmap space. */
530 info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
531 if (info->pixmap.addr == NULL) {
532 ERR_MSG("Cannot reserve pixmap memory.\n");
535 memset(info->pixmap.addr, 0, 64 * 1024);
537 /* set early this option because it could be changed by tv encoder
539 dinfo->fixed_mode = fixed;
542 if ((err = pci_enable_device(pdev))) {
543 ERR_MSG("Cannot enable device.\n");
548 /* Set base addresses. */
549 if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
550 (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
551 (ent->device == PCI_DEVICE_ID_INTEL_945G)) {
554 /* Disable HW cursor on 9x5G/M (not implemented yet) */
557 dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
558 dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
559 dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
560 DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
561 (unsigned long long)pci_resource_start(pdev, aperture_bar),
562 (unsigned long long)pci_resource_len(pdev, aperture_bar),
563 (unsigned long long)pci_resource_start(pdev, mmio_bar),
564 (unsigned long long)pci_resource_len(pdev, mmio_bar));
566 /* Reserve the fb and MMIO regions */
567 if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
568 INTELFB_MODULE_NAME)) {
569 ERR_MSG("Cannot reserve FB region.\n");
574 dinfo->flag |= INTELFB_FB_ACQUIRED;
576 if (!request_mem_region(dinfo->mmio_base_phys,
578 INTELFB_MODULE_NAME)) {
579 ERR_MSG("Cannot reserve MMIO region.\n");
584 dinfo->flag |= INTELFB_MMIO_ACQUIRED;
586 /* Get the chipset info. */
587 dinfo->pci_chipset = pdev->device;
589 if (intelfbhw_get_chipset(pdev, dinfo)) {
594 if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
599 INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
600 "stolen memory %dkB\n",
601 pdev->bus->number, PCI_SLOT(pdev->devfn),
602 PCI_FUNC(pdev->devfn), dinfo->name,
603 BtoMB(aperture_size), BtoKB(stolen_size));
605 /* Set these from the options. */
606 dinfo->accel = accel;
607 dinfo->hwcursor = hwcursor;
609 if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
610 INF_MSG("Acceleration is not supported for the %s chipset.\n",
615 /* Framebuffer parameters - Use all the stolen memory if >= vram */
616 if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
617 dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
618 dinfo->fbmem_gart = 0;
620 dinfo->fb.size = MB(vram);
621 dinfo->fbmem_gart = 1;
624 /* Allocate space for the ring buffer and HW cursor if enabled. */
626 dinfo->ring.size = RINGBUFFER_SIZE;
627 dinfo->ring_tail_mask = dinfo->ring.size - 1;
629 if (dinfo->hwcursor) {
630 dinfo->cursor.size = HW_CURSOR_SIZE;
633 /* Use agpgart to manage the GATT */
634 if (!(bridge = agp_backend_acquire(pdev))) {
635 ERR_MSG("cannot acquire agp\n");
640 /* get the current gatt info */
641 if (agp_copy_info(bridge, >t_info)) {
642 ERR_MSG("cannot get agp info\n");
643 agp_backend_release(bridge);
648 if (MB(voffset) < stolen_size)
649 offset = (stolen_size >> 12);
651 offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
653 /* set the mem offsets - set them after the already used pages */
655 dinfo->ring.offset = offset + gtt_info.current_memory;
657 if (dinfo->hwcursor) {
658 dinfo->cursor.offset = offset +
659 + gtt_info.current_memory + (dinfo->ring.size >> 12);
661 if (dinfo->fbmem_gart) {
662 dinfo->fb.offset = offset +
663 + gtt_info.current_memory + (dinfo->ring.size >> 12)
664 + (dinfo->cursor.size >> 12);
667 /* Allocate memories (which aren't stolen) */
668 /* Map the fb and MMIO regions */
669 /* ioremap only up to the end of used aperture */
670 dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
671 (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
673 if (!dinfo->aperture.virtual) {
674 ERR_MSG("Cannot remap FB region.\n");
680 (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
682 if (!dinfo->mmio_base) {
683 ERR_MSG("Cannot remap MMIO region.\n");
689 if (!(dinfo->gtt_ring_mem =
690 agp_allocate_memory(bridge, dinfo->ring.size >> 12,
691 AGP_NORMAL_MEMORY))) {
692 ERR_MSG("cannot allocate ring buffer memory\n");
693 agp_backend_release(bridge);
697 if (agp_bind_memory(dinfo->gtt_ring_mem,
698 dinfo->ring.offset)) {
699 ERR_MSG("cannot bind ring buffer memory\n");
700 agp_backend_release(bridge);
704 dinfo->ring.physical = dinfo->aperture.physical
705 + (dinfo->ring.offset << 12);
706 dinfo->ring.virtual = dinfo->aperture.virtual
707 + (dinfo->ring.offset << 12);
708 dinfo->ring_head = dinfo->ring.virtual;
710 if (dinfo->hwcursor) {
711 agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
713 if (!(dinfo->gtt_cursor_mem =
714 agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
716 ERR_MSG("cannot allocate cursor memory\n");
717 agp_backend_release(bridge);
721 if (agp_bind_memory(dinfo->gtt_cursor_mem,
722 dinfo->cursor.offset)) {
723 ERR_MSG("cannot bind cursor memory\n");
724 agp_backend_release(bridge);
729 dinfo->cursor.physical
730 = dinfo->gtt_cursor_mem->physical;
732 dinfo->cursor.physical = dinfo->aperture.physical
733 + (dinfo->cursor.offset << 12);
734 dinfo->cursor.virtual = dinfo->aperture.virtual
735 + (dinfo->cursor.offset << 12);
737 if (dinfo->fbmem_gart) {
738 if (!(dinfo->gtt_fb_mem =
739 agp_allocate_memory(bridge, dinfo->fb.size >> 12,
740 AGP_NORMAL_MEMORY))) {
741 WRN_MSG("cannot allocate framebuffer memory - use "
743 dinfo->fbmem_gart = 0;
745 if (agp_bind_memory(dinfo->gtt_fb_mem,
747 WRN_MSG("cannot bind framebuffer memory - use "
749 dinfo->fbmem_gart = 0;
753 /* update framebuffer memory parameters */
754 if (!dinfo->fbmem_gart)
755 dinfo->fb.offset = 0; /* starts at offset 0 */
756 dinfo->fb.physical = dinfo->aperture.physical
757 + (dinfo->fb.offset << 12);
758 dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
759 dinfo->fb_start = dinfo->fb.offset << 12;
761 /* release agpgart */
762 agp_backend_release(bridge);
767 DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
768 dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
769 (u32 __iomem ) dinfo->fb.virtual);
770 DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
771 dinfo->mmio_base_phys, INTEL_REG_SIZE,
772 (u32 __iomem) dinfo->mmio_base);
773 DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
774 dinfo->ring.physical, dinfo->ring.size,
775 (u32 __iomem ) dinfo->ring.virtual);
776 DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
777 dinfo->cursor.physical, dinfo->cursor.size,
778 (u32 __iomem ) dinfo->cursor.virtual, dinfo->cursor.offset,
779 dinfo->cursor.physical);
781 DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
782 "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
783 DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
789 * Check if the LVDS port or any DVO ports are enabled. If so,
790 * don't allow mode switching
792 dvo = intelfbhw_check_non_crt(dinfo);
794 dinfo->fixed_mode = 1;
795 WRN_MSG("Non-CRT device is enabled ( ");
799 s = intelfbhw_dvo_to_string(1 << i);
806 printk("). Disabling mode switching.\n");
812 if (FIXED_MODE(dinfo) && ORIG_VIDEO_ISVGA != VIDEO_TYPE_VLFB) {
813 ERR_MSG("Video mode must be programmed at boot time.\n");
821 /* Initialise dinfo and related data. */
822 /* If an initial mode was programmed at boot time, get its details. */
823 if (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
824 get_initial_mode(dinfo);
829 if (FIXED_MODE(dinfo)) {
830 /* remap fb address */
831 update_dinfo(dinfo, &dinfo->initial_var);
838 if (intelfb_set_fbinfo(dinfo)) {
849 pci_set_drvdata(pdev, dinfo);
851 /* Save the initial register state. */
852 i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
853 bailearly > 6 ? bailearly - 6 : 0);
855 DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
859 intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
864 /* Cursor initialisation */
865 if (dinfo->hwcursor) {
866 intelfbhw_cursor_init(dinfo);
867 intelfbhw_cursor_reset(dinfo);
873 /* 2d acceleration init */
875 intelfbhw_2d_start(dinfo);
883 if (register_framebuffer(dinfo->info) < 0) {
884 ERR_MSG("Cannot register framebuffer.\n");
889 dinfo->registered = 1;
894 fb_dealloc_cmap(&info->cmap);
896 framebuffer_release(info);
900 static void __devexit
901 intelfb_pci_unregister(struct pci_dev *pdev)
903 struct intelfb_info *dinfo = pci_get_drvdata(pdev);
905 DBG_MSG("intelfb_pci_unregister\n");
912 pci_set_drvdata(pdev, NULL);
915 /***************************************************************
917 ***************************************************************/
920 intelfb_var_to_depth(const struct fb_var_screeninfo *var)
922 DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
923 var->bits_per_pixel, var->green.length);
925 switch (var->bits_per_pixel) {
927 return (var->green.length == 6) ? 16 : 15;
931 return var->bits_per_pixel;
936 static __inline__ int
937 var_to_refresh(const struct fb_var_screeninfo *var)
939 int xtot = var->xres + var->left_margin + var->right_margin +
941 int ytot = var->yres + var->upper_margin + var->lower_margin +
944 return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
947 /***************************************************************
948 * Various intialisation functions *
949 ***************************************************************/
951 static void __devinit
952 get_initial_mode(struct intelfb_info *dinfo)
954 struct fb_var_screeninfo *var;
957 DBG_MSG("get_initial_mode\n");
959 dinfo->initial_vga = 1;
960 dinfo->initial_fb_base = screen_info.lfb_base;
961 dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
962 dinfo->initial_pitch = screen_info.lfb_linelength;
964 var = &dinfo->initial_var;
965 memset(var, 0, sizeof(*var));
966 var->xres = screen_info.lfb_width;
967 var->yres = screen_info.lfb_height;
968 var->bits_per_pixel = screen_info.lfb_depth;
969 switch (screen_info.lfb_depth) {
971 var->bits_per_pixel = 16;
974 var->bits_per_pixel = 32;
978 DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
979 dinfo->initial_fb_base, dinfo->initial_video_ram,
980 BtoKB(dinfo->initial_video_ram));
982 DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
983 var->xres, var->yres, var->bits_per_pixel,
984 dinfo->initial_pitch);
986 /* Dummy timing values (assume 60Hz) */
987 var->left_margin = (var->xres / 8) & 0xf8;
988 var->right_margin = 32;
989 var->upper_margin = 16;
990 var->lower_margin = 4;
991 var->hsync_len = (var->xres / 8) & 0xf8;
994 xtot = var->xres + var->left_margin +
995 var->right_margin + var->hsync_len;
996 ytot = var->yres + var->upper_margin +
997 var->lower_margin + var->vsync_len;
998 var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
1003 if (var->bits_per_pixel > 8) {
1004 var->red.offset = screen_info.red_pos;
1005 var->red.length = screen_info.red_size;
1006 var->green.offset = screen_info.green_pos;
1007 var->green.length = screen_info.green_size;
1008 var->blue.offset = screen_info.blue_pos;
1009 var->blue.length = screen_info.blue_size;
1010 var->transp.offset = screen_info.rsvd_pos;
1011 var->transp.length = screen_info.rsvd_size;
1013 var->red.length = 8;
1014 var->green.length = 8;
1015 var->blue.length = 8;
1019 static int __devinit
1020 intelfb_init_var(struct intelfb_info *dinfo)
1022 struct fb_var_screeninfo *var;
1025 DBG_MSG("intelfb_init_var\n");
1027 var = &dinfo->info->var;
1028 if (FIXED_MODE(dinfo)) {
1029 memcpy(var, &dinfo->initial_var,
1030 sizeof(struct fb_var_screeninfo));
1034 msrc = fb_find_mode(var, dinfo->info, mode,
1035 vesa_modes, VESA_MODEDB_SIZE,
1041 msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
1042 vesa_modes, VESA_MODEDB_SIZE,
1048 ERR_MSG("Cannot find a suitable video mode.\n");
1052 INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
1053 var->bits_per_pixel, var_to_refresh(var));
1055 DBG_MSG("Initial video mode is from %d.\n", msrc);
1057 #if ALLOCATE_FOR_PANNING
1058 /* Allow use of half of the video ram for panning */
1059 var->xres_virtual = var->xres;
1061 dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
1062 if (var->yres_virtual < var->yres)
1063 var->yres_virtual = var->yres;
1065 var->yres_virtual = var->yres;
1069 var->accel_flags |= FB_ACCELF_TEXT;
1071 var->accel_flags &= ~FB_ACCELF_TEXT;
1076 static int __devinit
1077 intelfb_set_fbinfo(struct intelfb_info *dinfo)
1079 struct fb_info *info = dinfo->info;
1081 DBG_MSG("intelfb_set_fbinfo\n");
1083 info->flags = FBINFO_FLAG_DEFAULT;
1084 info->fbops = &intel_fb_ops;
1085 info->pseudo_palette = dinfo->pseudo_palette;
1087 info->pixmap.size = 64*1024;
1088 info->pixmap.buf_align = 8;
1089 info->pixmap.access_align = 32;
1090 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1092 if (intelfb_init_var(dinfo))
1095 info->pixmap.scan_align = 1;
1096 strcpy(info->fix.id, dinfo->name);
1097 info->fix.smem_start = dinfo->fb.physical;
1098 info->fix.smem_len = dinfo->fb.size;
1099 info->fix.type = FB_TYPE_PACKED_PIXELS;
1100 info->fix.type_aux = 0;
1101 info->fix.xpanstep = 8;
1102 info->fix.ypanstep = 1;
1103 info->fix.ywrapstep = 0;
1104 info->fix.mmio_start = dinfo->mmio_base_phys;
1105 info->fix.mmio_len = INTEL_REG_SIZE;
1106 info->fix.accel = FB_ACCEL_I830;
1107 update_dinfo(dinfo, &info->var);
1112 /* Update dinfo to match the active video mode. */
1114 update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var)
1116 DBG_MSG("update_dinfo\n");
1118 dinfo->bpp = var->bits_per_pixel;
1119 dinfo->depth = intelfb_var_to_depth(var);
1120 dinfo->xres = var->xres;
1121 dinfo->yres = var->xres;
1122 dinfo->pixclock = var->pixclock;
1124 dinfo->info->fix.visual = dinfo->visual;
1125 dinfo->info->fix.line_length = dinfo->pitch;
1127 switch (dinfo->bpp) {
1129 dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
1130 dinfo->pitch = var->xres_virtual;
1133 dinfo->visual = FB_VISUAL_TRUECOLOR;
1134 dinfo->pitch = var->xres_virtual * 2;
1137 dinfo->visual = FB_VISUAL_TRUECOLOR;
1138 dinfo->pitch = var->xres_virtual * 4;
1142 /* Make sure the line length is a aligned correctly. */
1143 dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
1145 if (FIXED_MODE(dinfo))
1146 dinfo->pitch = dinfo->initial_pitch;
1148 dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
1149 dinfo->info->fix.line_length = dinfo->pitch;
1150 dinfo->info->fix.visual = dinfo->visual;
1153 /* fbops functions */
1155 /***************************************************************
1157 ***************************************************************/
1160 intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1163 struct fb_var_screeninfo v;
1164 struct intelfb_info *dinfo;
1165 static int first = 1;
1167 DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
1169 dinfo = GET_DINFO(info);
1171 if (intelfbhw_validate_mode(dinfo, var) != 0)
1176 /* Check for a supported bpp. */
1177 if (v.bits_per_pixel <= 8) {
1178 v.bits_per_pixel = 8;
1179 } else if (v.bits_per_pixel <= 16) {
1180 if (v.bits_per_pixel == 16)
1182 v.bits_per_pixel = 16;
1183 } else if (v.bits_per_pixel <= 32) {
1184 v.bits_per_pixel = 32;
1188 change_var = ((info->var.xres != var->xres) ||
1189 (info->var.yres != var->yres) ||
1190 (info->var.xres_virtual != var->xres_virtual) ||
1191 (info->var.yres_virtual != var->yres_virtual) ||
1192 (info->var.bits_per_pixel != var->bits_per_pixel) ||
1193 memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
1194 memcmp(&info->var.green, &var->green,
1195 sizeof(var->green)) ||
1196 memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
1198 if (FIXED_MODE(dinfo) &&
1200 var->yres_virtual > dinfo->initial_var.yres_virtual ||
1201 var->yres_virtual < dinfo->initial_var.yres ||
1202 var->xoffset || var->nonstd)) {
1204 ERR_MSG("Changing the video mode is not supported.\n");
1210 switch (intelfb_var_to_depth(&v)) {
1212 v.red.offset = v.green.offset = v.blue.offset = 0;
1213 v.red.length = v.green.length = v.blue.length = 8;
1214 v.transp.offset = v.transp.length = 0;
1220 v.red.length = v.green.length = v.blue.length = 5;
1221 v.transp.offset = v.transp.length = 0;
1230 v.transp.offset = v.transp.length = 0;
1236 v.red.length = v.green.length = v.blue.length = 8;
1237 v.transp.offset = v.transp.length = 0;
1243 v.red.length = v.green.length = v.blue.length = 8;
1244 v.transp.offset = 24;
1245 v.transp.length = 8;
1254 if (v.xoffset > v.xres_virtual - v.xres)
1255 v.xoffset = v.xres_virtual - v.xres;
1256 if (v.yoffset > v.yres_virtual - v.yres)
1257 v.yoffset = v.yres_virtual - v.yres;
1259 v.red.msb_right = v.green.msb_right = v.blue.msb_right =
1260 v.transp.msb_right = 0;
1268 intelfb_set_par(struct fb_info *info)
1270 struct intelfb_hwstate *hw;
1271 struct intelfb_info *dinfo = GET_DINFO(info);
1273 if (FIXED_MODE(dinfo)) {
1274 ERR_MSG("Changing the video mode is not supported.\n");
1278 hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
1282 DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
1283 info->var.yres, info->var.bits_per_pixel);
1285 intelfb_blank(FB_BLANK_POWERDOWN, info);
1287 if (ACCEL(dinfo, info))
1288 intelfbhw_2d_stop(dinfo);
1290 memcpy(hw, &dinfo->save_state, sizeof(*hw));
1291 if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
1293 if (intelfbhw_program_mode(dinfo, hw, 0))
1297 intelfbhw_read_hw_state(dinfo, hw, 0);
1298 intelfbhw_print_hw_state(dinfo, hw);
1301 update_dinfo(dinfo, &info->var);
1303 if (ACCEL(dinfo, info))
1304 intelfbhw_2d_start(dinfo);
1306 intelfb_pan_display(&info->var, info);
1308 intelfb_blank(FB_BLANK_UNBLANK, info);
1310 if (ACCEL(dinfo, info)) {
1311 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1312 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1313 FBINFO_HWACCEL_IMAGEBLIT;
1315 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1325 intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1326 unsigned blue, unsigned transp, struct fb_info *info)
1328 struct intelfb_info *dinfo = GET_DINFO(info);
1331 DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
1337 if (dinfo->depth == 8) {
1342 intelfbhw_setcolreg(dinfo, regno, red, green, blue,
1347 switch (dinfo->depth) {
1349 dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
1350 ((green & 0xf800) >> 6) |
1351 ((blue & 0xf800) >> 11);
1354 dinfo->pseudo_palette[regno] = (red & 0xf800) |
1355 ((green & 0xfc00) >> 5) |
1356 ((blue & 0xf800) >> 11);
1359 dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
1361 ((blue & 0xff00) >> 8);
1370 intelfb_blank(int blank, struct fb_info *info)
1372 intelfbhw_do_blank(blank, info);
1377 intelfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
1379 intelfbhw_pan_display(var, info);
1383 /* When/if we have our own ioctls. */
1385 intelfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
1393 intelfb_fillrect (struct fb_info *info, const struct fb_fillrect *rect)
1395 struct intelfb_info *dinfo = GET_DINFO(info);
1399 DBG_MSG("intelfb_fillrect\n");
1402 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1403 return cfb_fillrect(info, rect);
1405 if (rect->rop == ROP_COPY)
1406 rop = PAT_ROP_GXCOPY;
1408 rop = PAT_ROP_GXXOR;
1410 if (dinfo->depth != 8)
1411 color = dinfo->pseudo_palette[rect->color];
1413 color = rect->color;
1415 intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
1416 rect->width, rect->height, color,
1417 dinfo->pitch, info->var.bits_per_pixel,
1422 intelfb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
1424 struct intelfb_info *dinfo = GET_DINFO(info);
1427 DBG_MSG("intelfb_copyarea\n");
1430 if (!ACCEL(dinfo, info) || dinfo->depth == 4)
1431 return cfb_copyarea(info, region);
1433 intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
1434 region->dy, region->width, region->height,
1435 dinfo->pitch, info->var.bits_per_pixel);
1439 intelfb_imageblit(struct fb_info *info, const struct fb_image *image)
1441 struct intelfb_info *dinfo = GET_DINFO(info);
1442 u32 fgcolor, bgcolor;
1445 DBG_MSG("intelfb_imageblit\n");
1448 if (!ACCEL(dinfo, info) || dinfo->depth == 4
1449 || image->depth != 1)
1450 return cfb_imageblit(info, image);
1452 if (dinfo->depth != 8) {
1453 fgcolor = dinfo->pseudo_palette[image->fg_color];
1454 bgcolor = dinfo->pseudo_palette[image->bg_color];
1456 fgcolor = image->fg_color;
1457 bgcolor = image->bg_color;
1460 if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
1461 image->height, image->data,
1462 image->dx, image->dy,
1463 dinfo->pitch, info->var.bits_per_pixel))
1464 return cfb_imageblit(info, image);
1468 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1470 struct intelfb_info *dinfo = GET_DINFO(info);
1473 DBG_MSG("intelfb_cursor\n");
1476 if (!dinfo->hwcursor)
1479 intelfbhw_cursor_hide(dinfo);
1481 /* If XFree killed the cursor - restore it */
1482 if (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12) {
1485 DBG_MSG("the cursor was killed - restore it !!\n");
1486 DBG_MSG("size %d, %d pos %d, %d\n",
1487 cursor->image.width, cursor->image.height,
1488 cursor->image.dx, cursor->image.dy);
1490 intelfbhw_cursor_init(dinfo);
1491 intelfbhw_cursor_reset(dinfo);
1492 intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
1495 if (dinfo->depth != 8) {
1496 fg =dinfo->pseudo_palette[cursor->image.fg_color];
1497 bg =dinfo->pseudo_palette[cursor->image.bg_color];
1499 fg = cursor->image.fg_color;
1500 bg = cursor->image.bg_color;
1502 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1503 intelfbhw_cursor_load(dinfo, cursor->image.width,
1504 cursor->image.height,
1508 intelfbhw_cursor_show(dinfo);
1512 if (cursor->set & FB_CUR_SETPOS) {
1515 dx = cursor->image.dx - info->var.xoffset;
1516 dy = cursor->image.dy - info->var.yoffset;
1518 intelfbhw_cursor_setpos(dinfo, dx, dy);
1521 if (cursor->set & FB_CUR_SETSIZE) {
1522 if (cursor->image.width > 64 || cursor->image.height > 64)
1525 intelfbhw_cursor_reset(dinfo);
1528 if (cursor->set & FB_CUR_SETCMAP) {
1531 if (dinfo->depth != 8) {
1532 fg = dinfo->pseudo_palette[cursor->image.fg_color];
1533 bg = dinfo->pseudo_palette[cursor->image.bg_color];
1535 fg = cursor->image.fg_color;
1536 bg = cursor->image.bg_color;
1539 intelfbhw_cursor_setcolor(dinfo, bg, fg);
1542 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1543 u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
1544 u32 size = s_pitch * cursor->image.height;
1545 u8 *dat = (u8 *) cursor->image.data;
1546 u8 *msk = (u8 *) cursor->mask;
1550 if (cursor->image.depth != 1)
1553 switch (cursor->rop) {
1555 for (i = 0; i < size; i++)
1556 src[i] = dat[i] ^ msk[i];
1560 for (i = 0; i < size; i++)
1561 src[i] = dat[i] & msk[i];
1565 /* save the bitmap to restore it when XFree will
1566 make the cursor dirty */
1567 memcpy(dinfo->cursor_src, src, size);
1569 intelfbhw_cursor_load(dinfo, cursor->image.width,
1570 cursor->image.height, src);
1574 intelfbhw_cursor_show(dinfo);
1580 intelfb_sync(struct fb_info *info)
1582 struct intelfb_info *dinfo = GET_DINFO(info);
1585 DBG_MSG("intelfb_sync\n");
1588 if (dinfo->ring_lockup)
1591 intelfbhw_do_sync(dinfo);