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path: root/drivers/video/fbdev/intelfb/intelfbdrv.c
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Diffstat (limited to 'drivers/video/fbdev/intelfb/intelfbdrv.c')
-rw-r--r--drivers/video/fbdev/intelfb/intelfbdrv.c1704
1 files changed, 1704 insertions, 0 deletions
diff --git a/drivers/video/fbdev/intelfb/intelfbdrv.c b/drivers/video/fbdev/intelfb/intelfbdrv.c
new file mode 100644
index 00000000000..b847d530471
--- /dev/null
+++ b/drivers/video/fbdev/intelfb/intelfbdrv.c
@@ -0,0 +1,1704 @@
+/*
+ * intelfb
+ *
+ * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
+ * 945G/945GM/945GME/965G/965GM integrated graphics chips.
+ *
+ * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
+ * 2004 Sylvain Meyer
+ * 2006 David Airlie
+ *
+ * This driver consists of two parts. The first part (intelfbdrv.c) provides
+ * the basic fbdev interfaces, is derived in part from the radeonfb and
+ * vesafb drivers, and is covered by the GPL. The second part (intelfbhw.c)
+ * provides the code to program the hardware. Most of it is derived from
+ * the i810/i830 XFree86 driver. The HW-specific code is covered here
+ * under a dual license (GPL and MIT/XFree86 license).
+ *
+ * Author: David Dawes
+ *
+ */
+
+/* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
+
+/*
+ * Changes:
+ * 01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
+ * This initial version is a basic core that works a lot like
+ * the vesafb driver. It must be built-in to the kernel,
+ * and the initial video mode must be set with vga=XXX at
+ * boot time. (David Dawes)
+ *
+ * 01/2003 - Version 0.2.0: Mode switching added, colormap support
+ * implemented, Y panning, and soft screen blanking implemented.
+ * No acceleration yet. (David Dawes)
+ *
+ * 01/2003 - Version 0.3.0: fbcon acceleration support added. Module
+ * option handling added. (David Dawes)
+ *
+ * 01/2003 - Version 0.4.0: fbcon HW cursor support added. (David Dawes)
+ *
+ * 01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
+ * (David Dawes)
+ *
+ * 02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
+ * mode validation checks. (David Dawes)
+ *
+ * 02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
+ * acceleration is disabled while an XFree86 server is running.
+ * (David Dawes)
+ *
+ * 02/2003 - Version 0.4.4: Monitor DPMS support. (David Dawes)
+ *
+ * 02/2003 - Version 0.4.5: Basic XFree86 + fbdev working. (David Dawes)
+ *
+ * 02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
+ * as 2.4.x kernels. (David Dawes)
+ *
+ * 02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
+ * (David Dawes)
+ *
+ * 02/2003 - Version 0.7.0: Test on 852GM/855GM. Acceleration and HW
+ * cursor are disabled on this platform. (David Dawes)
+ *
+ * 02/2003 - Version 0.7.1: Test on 845G. Acceleration is disabled
+ * on this platform. (David Dawes)
+ *
+ * 02/2003 - Version 0.7.2: Test on 830M. Acceleration and HW
+ * cursor are disabled on this platform. (David Dawes)
+ *
+ * 02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
+ * (David Dawes)
+ *
+ * 02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
+ * in the kernel, and add mode bpp verification and default
+ * bpp selection based on which FBCON_HAS_CFB* are configured.
+ * (David Dawes)
+ *
+ * 02/2003 - Version 0.7.5: Add basic package/install scripts based on the
+ * DRI packaging scripts. (David Dawes)
+ *
+ * 04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
+ * kernels. (David Dawes, reported by Anupam).
+ *
+ * 06/2003 - Version 0.7.7:
+ * Fix Makefile.kernel build problem (Tsutomu Yasuda).
+ * Fix mis-placed #endif (2.4.21 kernel).
+ *
+ * 09/2004 - Version 0.9.0 - by Sylvain Meyer
+ * Port to linux 2.6 kernel fbdev
+ * Fix HW accel and HW cursor on i845G
+ * Use of agpgart for fb memory reservation
+ * Add mtrr support
+ *
+ * 10/2004 - Version 0.9.1
+ * Use module_param instead of old MODULE_PARM
+ * Some cleanup
+ *
+ * 11/2004 - Version 0.9.2
+ * Add vram option to reserve more memory than stolen by BIOS
+ * Fix intelfbhw_pan_display typo
+ * Add __initdata annotations
+ *
+ * 04/2008 - Version 0.9.5
+ * Add support for 965G/965GM. (Maik Broemme <mbroemme@plusserver.de>)
+ *
+ * 08/2008 - Version 0.9.6
+ * Add support for 945GME. (Phil Endecott <spam_from_intelfb@chezphil.org>)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/vmalloc.h>
+#include <linux/pagemap.h>
+#include <linux/screen_info.h>
+
+#include <asm/io.h>
+
+#ifdef CONFIG_MTRR
+#include <asm/mtrr.h>
+#endif
+
+#include "intelfb.h"
+#include "intelfbhw.h"
+#include "../edid.h"
+
+static void get_initial_mode(struct intelfb_info *dinfo);
+static void update_dinfo(struct intelfb_info *dinfo,
+ struct fb_var_screeninfo *var);
+static int intelfb_open(struct fb_info *info, int user);
+static int intelfb_release(struct fb_info *info, int user);
+static int intelfb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *info);
+static int intelfb_set_par(struct fb_info *info);
+static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct fb_info *info);
+
+static int intelfb_blank(int blank, struct fb_info *info);
+static int intelfb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info);
+
+static void intelfb_fillrect(struct fb_info *info,
+ const struct fb_fillrect *rect);
+static void intelfb_copyarea(struct fb_info *info,
+ const struct fb_copyarea *region);
+static void intelfb_imageblit(struct fb_info *info,
+ const struct fb_image *image);
+static int intelfb_cursor(struct fb_info *info,
+ struct fb_cursor *cursor);
+
+static int intelfb_sync(struct fb_info *info);
+
+static int intelfb_ioctl(struct fb_info *info,
+ unsigned int cmd, unsigned long arg);
+
+static int intelfb_pci_register(struct pci_dev *pdev,
+ const struct pci_device_id *ent);
+static void intelfb_pci_unregister(struct pci_dev *pdev);
+static int intelfb_set_fbinfo(struct intelfb_info *dinfo);
+
+/*
+ * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
+ * mobile chipsets from being registered.
+ */
+#if DETECT_VGA_CLASS_ONLY
+#define INTELFB_CLASS_MASK ~0 << 8
+#else
+#define INTELFB_CLASS_MASK 0
+#endif
+
+static struct pci_device_id intelfb_pci_table[] = {
+ { 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 },
+ { 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 },
+ { 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 },
+ { 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 },
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_854, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_854 },
+ { 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 },
+ { 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 },
+ { 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 },
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GM },
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GME, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GME },
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965G },
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965GM },
+ { 0, }
+};
+
+/* Global data */
+static int num_registered = 0;
+
+/* fb ops */
+static struct fb_ops intel_fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_open = intelfb_open,
+ .fb_release = intelfb_release,
+ .fb_check_var = intelfb_check_var,
+ .fb_set_par = intelfb_set_par,
+ .fb_setcolreg = intelfb_setcolreg,
+ .fb_blank = intelfb_blank,
+ .fb_pan_display = intelfb_pan_display,
+ .fb_fillrect = intelfb_fillrect,
+ .fb_copyarea = intelfb_copyarea,
+ .fb_imageblit = intelfb_imageblit,
+ .fb_cursor = intelfb_cursor,
+ .fb_sync = intelfb_sync,
+ .fb_ioctl = intelfb_ioctl
+};
+
+/* PCI driver module table */
+static struct pci_driver intelfb_driver = {
+ .name = "intelfb",
+ .id_table = intelfb_pci_table,
+ .probe = intelfb_pci_register,
+ .remove = intelfb_pci_unregister,
+};
+
+/* Module description/parameters */
+MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
+ "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
+MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
+ " chipsets");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
+
+static bool accel = 1;
+static int vram = 4;
+static bool hwcursor = 0;
+static bool mtrr = 1;
+static bool fixed = 0;
+static bool noinit = 0;
+static bool noregister = 0;
+static bool probeonly = 0;
+static bool idonly = 0;
+static int bailearly = 0;
+static int voffset = 48;
+static char *mode = NULL;
+
+module_param(accel, bool, S_IRUGO);
+MODULE_PARM_DESC(accel, "Enable hardware acceleration");
+module_param(vram, int, S_IRUGO);
+MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
+module_param(voffset, int, S_IRUGO);
+MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
+module_param(hwcursor, bool, S_IRUGO);
+MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
+module_param(mtrr, bool, S_IRUGO);
+MODULE_PARM_DESC(mtrr, "Enable MTRR support");
+module_param(fixed, bool, S_IRUGO);
+MODULE_PARM_DESC(fixed, "Disable mode switching");
+module_param(noinit, bool, 0);
+MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
+module_param(noregister, bool, 0);
+MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
+module_param(probeonly, bool, 0);
+MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
+module_param(idonly, bool, 0);
+MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
+module_param(bailearly, int, 0);
+MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
+module_param(mode, charp, S_IRUGO);
+MODULE_PARM_DESC(mode,
+ "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
+
+#ifndef MODULE
+#define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
+#define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
+#define OPT_STRVAL(opt, name) (opt + strlen(name))
+
+static __inline__ char * get_opt_string(const char *this_opt, const char *name)
+{
+ const char *p;
+ int i;
+ char *ret;
+
+ p = OPT_STRVAL(this_opt, name);
+ i = 0;
+ while (p[i] && p[i] != ' ' && p[i] != ',')
+ i++;
+ ret = kmalloc(i + 1, GFP_KERNEL);
+ if (ret) {
+ strncpy(ret, p, i);
+ ret[i] = '\0';
+ }
+ return ret;
+}
+
+static __inline__ int get_opt_int(const char *this_opt, const char *name,
+ int *ret)
+{
+ if (!ret)
+ return 0;
+
+ if (!OPT_EQUAL(this_opt, name))
+ return 0;
+
+ *ret = OPT_INTVAL(this_opt, name);
+ return 1;
+}
+
+static __inline__ int get_opt_bool(const char *this_opt, const char *name,
+ int *ret)
+{
+ if (!ret)
+ return 0;
+
+ if (OPT_EQUAL(this_opt, name)) {
+ if (this_opt[strlen(name)] == '=')
+ *ret = simple_strtoul(this_opt + strlen(name) + 1,
+ NULL, 0);
+ else
+ *ret = 1;
+ } else {
+ if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
+ *ret = 0;
+ else
+ return 0;
+ }
+ return 1;
+}
+
+static int __init intelfb_setup(char *options)
+{
+ char *this_opt;
+
+ DBG_MSG("intelfb_setup\n");
+
+ if (!options || !*options) {
+ DBG_MSG("no options\n");
+ return 0;
+ } else
+ DBG_MSG("options: %s\n", options);
+
+ /*
+ * These are the built-in options analogous to the module parameters
+ * defined above.
+ *
+ * The syntax is:
+ *
+ * video=intelfb:[mode][,<param>=<val>] ...
+ *
+ * e.g.,
+ *
+ * video=intelfb:1024x768-16@75,accel=0
+ */
+
+ while ((this_opt = strsep(&options, ","))) {
+ if (!*this_opt)
+ continue;
+ if (get_opt_bool(this_opt, "accel", &accel))
+ ;
+ else if (get_opt_int(this_opt, "vram", &vram))
+ ;
+ else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
+ ;
+ else if (get_opt_bool(this_opt, "mtrr", &mtrr))
+ ;
+ else if (get_opt_bool(this_opt, "fixed", &fixed))
+ ;
+ else if (get_opt_bool(this_opt, "init", &noinit))
+ noinit = !noinit;
+ else if (OPT_EQUAL(this_opt, "mode="))
+ mode = get_opt_string(this_opt, "mode=");
+ else
+ mode = this_opt;
+ }
+
+ return 0;
+}
+
+#endif
+
+static int __init intelfb_init(void)
+{
+#ifndef MODULE
+ char *option = NULL;
+#endif
+
+ DBG_MSG("intelfb_init\n");
+
+ INF_MSG("Framebuffer driver for "
+ "Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
+ INF_MSG("Version " INTELFB_VERSION "\n");
+
+ if (idonly)
+ return -ENODEV;
+
+#ifndef MODULE
+ if (fb_get_options("intelfb", &option))
+ return -ENODEV;
+ intelfb_setup(option);
+#endif
+
+ return pci_register_driver(&intelfb_driver);
+}
+
+static void __exit intelfb_exit(void)
+{
+ DBG_MSG("intelfb_exit\n");
+ pci_unregister_driver(&intelfb_driver);
+}
+
+module_init(intelfb_init);
+module_exit(intelfb_exit);
+
+/***************************************************************
+ * mtrr support functions *
+ ***************************************************************/
+
+#ifdef CONFIG_MTRR
+static inline void set_mtrr(struct intelfb_info *dinfo)
+{
+ dinfo->mtrr_reg = mtrr_add(dinfo->aperture.physical,
+ dinfo->aperture.size, MTRR_TYPE_WRCOMB, 1);
+ if (dinfo->mtrr_reg < 0) {
+ ERR_MSG("unable to set MTRR\n");
+ return;
+ }
+ dinfo->has_mtrr = 1;
+}
+static inline void unset_mtrr(struct intelfb_info *dinfo)
+{
+ if (dinfo->has_mtrr)
+ mtrr_del(dinfo->mtrr_reg, dinfo->aperture.physical,
+ dinfo->aperture.size);
+}
+#else
+#define set_mtrr(x) WRN_MSG("MTRR is disabled in the kernel\n")
+
+#define unset_mtrr(x) do { } while (0)
+#endif /* CONFIG_MTRR */
+
+/***************************************************************
+ * driver init / cleanup *
+ ***************************************************************/
+
+static void cleanup(struct intelfb_info *dinfo)
+{
+ DBG_MSG("cleanup\n");
+
+ if (!dinfo)
+ return;
+
+ intelfbhw_disable_irq(dinfo);
+
+ fb_dealloc_cmap(&dinfo->info->cmap);
+ kfree(dinfo->info->pixmap.addr);
+
+ if (dinfo->registered)
+ unregister_framebuffer(dinfo->info);
+
+ unset_mtrr(dinfo);
+
+ if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
+ agp_unbind_memory(dinfo->gtt_fb_mem);
+ agp_free_memory(dinfo->gtt_fb_mem);
+ }
+ if (dinfo->gtt_cursor_mem) {
+ agp_unbind_memory(dinfo->gtt_cursor_mem);
+ agp_free_memory(dinfo->gtt_cursor_mem);
+ }
+ if (dinfo->gtt_ring_mem) {
+ agp_unbind_memory(dinfo->gtt_ring_mem);
+ agp_free_memory(dinfo->gtt_ring_mem);
+ }
+
+#ifdef CONFIG_FB_INTEL_I2C
+ /* un-register I2C bus */
+ intelfb_delete_i2c_busses(dinfo);
+#endif
+
+ if (dinfo->mmio_base)
+ iounmap((void __iomem *)dinfo->mmio_base);
+ if (dinfo->aperture.virtual)
+ iounmap((void __iomem *)dinfo->aperture.virtual);
+
+ if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
+ release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
+ if (dinfo->flag & INTELFB_FB_ACQUIRED)
+ release_mem_region(dinfo->aperture.physical,
+ dinfo->aperture.size);
+ framebuffer_release(dinfo->info);
+}
+
+#define bailout(dinfo) do { \
+ DBG_MSG("bailout\n"); \
+ cleanup(dinfo); \
+ INF_MSG("Not going to register framebuffer, exiting...\n"); \
+ return -ENODEV; \
+} while (0)
+
+
+static int intelfb_pci_register(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct fb_info *info;
+ struct intelfb_info *dinfo;
+ int i, err, dvo;
+ int aperture_size, stolen_size;
+ struct agp_kern_info gtt_info;
+ int agp_memtype;
+ const char *s;
+ struct agp_bridge_data *bridge;
+ int aperture_bar = 0;
+ int mmio_bar = 1;
+ int offset;
+
+ DBG_MSG("intelfb_pci_register\n");
+
+ num_registered++;
+ if (num_registered != 1) {
+ ERR_MSG("Attempted to register %d devices "
+ "(should be only 1).\n", num_registered);
+ return -ENODEV;
+ }
+
+ info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
+ if (!info) {
+ ERR_MSG("Could not allocate memory for intelfb_info.\n");
+ return -ENODEV;
+ }
+ if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
+ ERR_MSG("Could not allocate cmap for intelfb_info.\n");
+ goto err_out_cmap;
+ }
+
+ dinfo = info->par;
+ dinfo->info = info;
+ dinfo->fbops = &intel_fb_ops;
+ dinfo->pdev = pdev;
+
+ /* Reserve pixmap space. */
+ info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
+ if (info->pixmap.addr == NULL) {
+ ERR_MSG("Cannot reserve pixmap memory.\n");
+ goto err_out_pixmap;
+ }
+
+ /* set early this option because it could be changed by tv encoder
+ driver */
+ dinfo->fixed_mode = fixed;
+
+ /* Enable device. */
+ if ((err = pci_enable_device(pdev))) {
+ ERR_MSG("Cannot enable device.\n");
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ /* Set base addresses. */
+ if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
+ (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
+ (ent->device == PCI_DEVICE_ID_INTEL_945G) ||
+ (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
+ (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
+ (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
+ (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
+
+ aperture_bar = 2;
+ mmio_bar = 0;
+ }
+ dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
+ dinfo->aperture.size = pci_resource_len(pdev, aperture_bar);
+ dinfo->mmio_base_phys = pci_resource_start(pdev, mmio_bar);
+ DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
+ (unsigned long long)pci_resource_start(pdev, aperture_bar),
+ (unsigned long long)pci_resource_len(pdev, aperture_bar),
+ (unsigned long long)pci_resource_start(pdev, mmio_bar),
+ (unsigned long long)pci_resource_len(pdev, mmio_bar));
+
+ /* Reserve the fb and MMIO regions */
+ if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
+ INTELFB_MODULE_NAME)) {
+ ERR_MSG("Cannot reserve FB region.\n");
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ dinfo->flag |= INTELFB_FB_ACQUIRED;
+
+ if (!request_mem_region(dinfo->mmio_base_phys,
+ INTEL_REG_SIZE,
+ INTELFB_MODULE_NAME)) {
+ ERR_MSG("Cannot reserve MMIO region.\n");
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ dinfo->flag |= INTELFB_MMIO_ACQUIRED;
+
+ /* Get the chipset info. */
+ dinfo->pci_chipset = pdev->device;
+
+ if (intelfbhw_get_chipset(pdev, dinfo)) {
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
+ "stolen memory %dkB\n",
+ pdev->bus->number, PCI_SLOT(pdev->devfn),
+ PCI_FUNC(pdev->devfn), dinfo->name,
+ BtoMB(aperture_size), BtoKB(stolen_size));
+
+ /* Set these from the options. */
+ dinfo->accel = accel;
+ dinfo->hwcursor = hwcursor;
+
+ if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
+ INF_MSG("Acceleration is not supported for the %s chipset.\n",
+ dinfo->name);
+ dinfo->accel = 0;
+ }
+
+ /* Framebuffer parameters - Use all the stolen memory if >= vram */
+ if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
+ dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
+ dinfo->fbmem_gart = 0;
+ } else {
+ dinfo->fb.size = MB(vram);
+ dinfo->fbmem_gart = 1;
+ }
+
+ /* Allocate space for the ring buffer and HW cursor if enabled. */
+ if (dinfo->accel) {
+ dinfo->ring.size = RINGBUFFER_SIZE;
+ dinfo->ring_tail_mask = dinfo->ring.size - 1;
+ }
+ if (dinfo->hwcursor)
+ dinfo->cursor.size = HW_CURSOR_SIZE;
+
+ /* Use agpgart to manage the GATT */
+ if (!(bridge = agp_backend_acquire(pdev))) {
+ ERR_MSG("cannot acquire agp\n");
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ /* get the current gatt info */
+ if (agp_copy_info(bridge, &gtt_info)) {
+ ERR_MSG("cannot get agp info\n");
+ agp_backend_release(bridge);
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ if (MB(voffset) < stolen_size)
+ offset = (stolen_size >> 12);
+ else
+ offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
+
+ /* set the mem offsets - set them after the already used pages */
+ if (dinfo->accel)
+ dinfo->ring.offset = offset + gtt_info.current_memory;
+ if (dinfo->hwcursor)
+ dinfo->cursor.offset = offset +
+ + gtt_info.current_memory + (dinfo->ring.size >> 12);
+ if (dinfo->fbmem_gart)
+ dinfo->fb.offset = offset +
+ + gtt_info.current_memory + (dinfo->ring.size >> 12)
+ + (dinfo->cursor.size >> 12);
+
+ /* Allocate memories (which aren't stolen) */
+ /* Map the fb and MMIO regions */
+ /* ioremap only up to the end of used aperture */
+ dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
+ (dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
+ + dinfo->fb.size);
+ if (!dinfo->aperture.virtual) {
+ ERR_MSG("Cannot remap FB region.\n");
+ agp_backend_release(bridge);
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ dinfo->mmio_base =
+ (u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
+ INTEL_REG_SIZE);
+ if (!dinfo->mmio_base) {
+ ERR_MSG("Cannot remap MMIO region.\n");
+ agp_backend_release(bridge);
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ if (dinfo->accel) {
+ if (!(dinfo->gtt_ring_mem =
+ agp_allocate_memory(bridge, dinfo->ring.size >> 12,
+ AGP_NORMAL_MEMORY))) {
+ ERR_MSG("cannot allocate ring buffer memory\n");
+ agp_backend_release(bridge);
+ cleanup(dinfo);
+ return -ENOMEM;
+ }
+ if (agp_bind_memory(dinfo->gtt_ring_mem,
+ dinfo->ring.offset)) {
+ ERR_MSG("cannot bind ring buffer memory\n");
+ agp_backend_release(bridge);
+ cleanup(dinfo);
+ return -EBUSY;
+ }
+ dinfo->ring.physical = dinfo->aperture.physical
+ + (dinfo->ring.offset << 12);
+ dinfo->ring.virtual = dinfo->aperture.virtual
+ + (dinfo->ring.offset << 12);
+ dinfo->ring_head = 0;
+ }
+ if (dinfo->hwcursor) {
+ agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
+ : AGP_NORMAL_MEMORY;
+ if (!(dinfo->gtt_cursor_mem =
+ agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
+ agp_memtype))) {
+ ERR_MSG("cannot allocate cursor memory\n");
+ agp_backend_release(bridge);
+ cleanup(dinfo);
+ return -ENOMEM;
+ }
+ if (agp_bind_memory(dinfo->gtt_cursor_mem,
+ dinfo->cursor.offset)) {
+ ERR_MSG("cannot bind cursor memory\n");
+ agp_backend_release(bridge);
+ cleanup(dinfo);
+ return -EBUSY;
+ }
+ if (dinfo->mobile)
+ dinfo->cursor.physical
+ = dinfo->gtt_cursor_mem->physical;
+ else
+ dinfo->cursor.physical = dinfo->aperture.physical
+ + (dinfo->cursor.offset << 12);
+ dinfo->cursor.virtual = dinfo->aperture.virtual
+ + (dinfo->cursor.offset << 12);
+ }
+ if (dinfo->fbmem_gart) {
+ if (!(dinfo->gtt_fb_mem =
+ agp_allocate_memory(bridge, dinfo->fb.size >> 12,
+ AGP_NORMAL_MEMORY))) {
+ WRN_MSG("cannot allocate framebuffer memory - use "
+ "the stolen one\n");
+ dinfo->fbmem_gart = 0;
+ }
+ if (agp_bind_memory(dinfo->gtt_fb_mem,
+ dinfo->fb.offset)) {
+ WRN_MSG("cannot bind framebuffer memory - use "
+ "the stolen one\n");
+ dinfo->fbmem_gart = 0;
+ }
+ }
+
+ /* update framebuffer memory parameters */
+ if (!dinfo->fbmem_gart)
+ dinfo->fb.offset = 0; /* starts at offset 0 */
+ dinfo->fb.physical = dinfo->aperture.physical
+ + (dinfo->fb.offset << 12);
+ dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
+ dinfo->fb_start = dinfo->fb.offset << 12;
+
+ /* release agpgart */
+ agp_backend_release(bridge);
+
+ if (mtrr)
+ set_mtrr(dinfo);
+
+ DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
+ dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
+ dinfo->fb.virtual);
+ DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
+ dinfo->mmio_base_phys, INTEL_REG_SIZE,
+ dinfo->mmio_base);
+ DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
+ dinfo->ring.physical, dinfo->ring.size,
+ dinfo->ring.virtual);
+ DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
+ dinfo->cursor.physical, dinfo->cursor.size,
+ dinfo->cursor.virtual, dinfo->cursor.offset,
+ dinfo->cursor.physical);
+
+ DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
+ "noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
+ DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
+
+ if (probeonly)
+ bailout(dinfo);
+
+ /*
+ * Check if the LVDS port or any DVO ports are enabled. If so,
+ * don't allow mode switching
+ */
+ dvo = intelfbhw_check_non_crt(dinfo);
+ if (dvo) {
+ dinfo->fixed_mode = 1;
+ WRN_MSG("Non-CRT device is enabled ( ");
+ i = 0;
+ while (dvo) {
+ if (dvo & 1) {
+ s = intelfbhw_dvo_to_string(1 << i);
+ if (s)
+ printk("%s ", s);
+ }
+ dvo >>= 1;
+ ++i;
+ }
+ printk("). Disabling mode switching.\n");
+ }
+
+ if (bailearly == 1)
+ bailout(dinfo);
+
+ if (FIXED_MODE(dinfo) &&
+ screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
+ ERR_MSG("Video mode must be programmed at boot time.\n");
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ if (bailearly == 2)
+ bailout(dinfo);
+
+ /* Initialise dinfo and related data. */
+ /* If an initial mode was programmed at boot time, get its details. */
+ if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
+ get_initial_mode(dinfo);
+
+ if (bailearly == 3)
+ bailout(dinfo);
+
+ if (FIXED_MODE(dinfo)) /* remap fb address */
+ update_dinfo(dinfo, &dinfo->initial_var);
+
+ if (bailearly == 4)
+ bailout(dinfo);
+
+
+ if (intelfb_set_fbinfo(dinfo)) {
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ if (bailearly == 5)
+ bailout(dinfo);
+
+#ifdef CONFIG_FB_INTEL_I2C
+ /* register I2C bus */
+ intelfb_create_i2c_busses(dinfo);
+#endif
+
+ if (bailearly == 6)
+ bailout(dinfo);
+
+ pci_set_drvdata(pdev, dinfo);
+
+ /* Save the initial register state. */
+ i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
+ bailearly > 6 ? bailearly - 6 : 0);
+ if (i != 0) {
+ DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
+ bailout(dinfo);
+ }
+
+ intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
+
+ if (bailearly == 18)
+ bailout(dinfo);
+
+ /* read active pipe */
+ dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
+
+ /* Cursor initialisation */
+ if (dinfo->hwcursor) {
+ intelfbhw_cursor_init(dinfo);
+ intelfbhw_cursor_reset(dinfo);
+ }
+
+ if (bailearly == 19)
+ bailout(dinfo);
+
+ /* 2d acceleration init */
+ if (dinfo->accel)
+ intelfbhw_2d_start(dinfo);
+
+ if (bailearly == 20)
+ bailout(dinfo);
+
+ if (noregister)
+ bailout(dinfo);
+
+ if (register_framebuffer(dinfo->info) < 0) {
+ ERR_MSG("Cannot register framebuffer.\n");
+ cleanup(dinfo);
+ return -ENODEV;
+ }
+
+ dinfo->registered = 1;
+ dinfo->open = 0;
+
+ init_waitqueue_head(&dinfo->vsync.wait);
+ spin_lock_init(&dinfo->int_lock);
+ dinfo->irq_flags = 0;
+ dinfo->vsync.pan_display = 0;
+ dinfo->vsync.pan_offset = 0;
+
+ return 0;
+
+err_out_pixmap:
+ fb_dealloc_cmap(&info->cmap);
+err_out_cmap:
+ framebuffer_release(info);
+ return -ENODEV;
+}
+
+static void intelfb_pci_unregister(struct pci_dev *pdev)
+{
+ struct intelfb_info *dinfo = pci_get_drvdata(pdev);
+
+ DBG_MSG("intelfb_pci_unregister\n");
+
+ if (!dinfo)
+ return;
+
+ cleanup(dinfo);
+}
+
+/***************************************************************
+ * helper functions *
+ ***************************************************************/
+
+int __inline__ intelfb_var_to_depth(const struct fb_var_screeninfo *var)
+{
+ DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
+ var->bits_per_pixel, var->green.length);
+
+ switch (var->bits_per_pixel) {
+ case 16:
+ return (var->green.length == 6) ? 16 : 15;
+ case 32:
+ return 24;
+ default:
+ return var->bits_per_pixel;
+ }
+}
+
+
+static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
+{
+ int xtot = var->xres + var->left_margin + var->right_margin +
+ var->hsync_len;
+ int ytot = var->yres + var->upper_margin + var->lower_margin +
+ var->vsync_len;
+
+ return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
+}
+
+/***************************************************************
+ * Various intialisation functions *
+ ***************************************************************/
+
+static void get_initial_mode(struct intelfb_info *dinfo)
+{
+ struct fb_var_screeninfo *var;
+ int xtot, ytot;
+
+ DBG_MSG("get_initial_mode\n");
+
+ dinfo->initial_vga = 1;
+ dinfo->initial_fb_base = screen_info.lfb_base;
+ dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
+ dinfo->initial_pitch = screen_info.lfb_linelength;
+
+ var = &dinfo->initial_var;
+ memset(var, 0, sizeof(*var));
+ var->xres = screen_info.lfb_width;
+ var->yres = screen_info.lfb_height;
+ var->bits_per_pixel = screen_info.lfb_depth;
+ switch (screen_info.lfb_depth) {
+ case 15:
+ var->bits_per_pixel = 16;
+ break;
+ case 24:
+ var->bits_per_pixel = 32;
+ break;
+ }
+
+ DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
+ dinfo->initial_fb_base, dinfo->initial_video_ram,
+ BtoKB(dinfo->initial_video_ram));
+
+ DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
+ var->xres, var->yres, var->bits_per_pixel,
+ dinfo->initial_pitch);
+
+ /* Dummy timing values (assume 60Hz) */
+ var->left_margin = (var->xres / 8) & 0xf8;
+ var->right_margin = 32;
+ var->upper_margin = 16;
+ var->lower_margin = 4;
+ var->hsync_len = (var->xres / 8) & 0xf8;
+ var->vsync_len = 4;
+
+ xtot = var->xres + var->left_margin +
+ var->right_margin + var->hsync_len;
+ ytot = var->yres + var->upper_margin +
+ var->lower_margin + var->vsync_len;
+ var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
+
+ var->height = -1;
+ var->width = -1;
+
+ if (var->bits_per_pixel > 8) {
+ var->red.offset = screen_info.red_pos;
+ var->red.length = screen_info.red_size;
+ var->green.offset = screen_info.green_pos;
+ var->green.length = screen_info.green_size;
+ var->blue.offset = screen_info.blue_pos;
+ var->blue.length = screen_info.blue_size;
+ var->transp.offset = screen_info.rsvd_pos;
+ var->transp.length = screen_info.rsvd_size;
+ } else {
+ var->red.length = 8;
+ var->green.length = 8;
+ var->blue.length = 8;
+ }
+}
+
+static int intelfb_init_var(struct intelfb_info *dinfo)
+{
+ struct fb_var_screeninfo *var;
+ int msrc = 0;
+
+ DBG_MSG("intelfb_init_var\n");
+
+ var = &dinfo->info->var;
+ if (FIXED_MODE(dinfo)) {
+ memcpy(var, &dinfo->initial_var,
+ sizeof(struct fb_var_screeninfo));
+ msrc = 5;
+ } else {
+ const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
+ u8 *edid_d = NULL;
+
+ if (edid_s) {
+ edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
+
+ if (edid_d) {
+ fb_edid_to_monspecs(edid_d,
+ &dinfo->info->monspecs);
+ kfree(edid_d);
+ }
+ }
+
+ if (mode) {
+ printk("intelfb: Looking for mode in private "
+ "database\n");
+ msrc = fb_find_mode(var, dinfo->info, mode,
+ dinfo->info->monspecs.modedb,
+ dinfo->info->monspecs.modedb_len,
+ NULL, 0);
+
+ if (msrc && msrc > 1) {
+ printk("intelfb: No mode in private database, "
+ "intelfb: looking for mode in global "
+ "database ");
+ msrc = fb_find_mode(var, dinfo->info, mode,
+ NULL, 0, NULL, 0);
+
+ if (msrc)
+ msrc |= 8;
+ }
+
+ }
+
+ if (!msrc)
+ msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
+ NULL, 0, NULL, 0);
+ }
+
+ if (!msrc) {
+ ERR_MSG("Cannot find a suitable video mode.\n");
+ return 1;
+ }
+
+ INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
+ var->bits_per_pixel, var_to_refresh(var));
+
+ DBG_MSG("Initial video mode is from %d.\n", msrc);
+
+#if ALLOCATE_FOR_PANNING
+ /* Allow use of half of the video ram for panning */
+ var->xres_virtual = var->xres;
+ var->yres_virtual =
+ dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
+ if (var->yres_virtual < var->yres)
+ var->yres_virtual = var->yres;
+#else
+ var->yres_virtual = var->yres;
+#endif
+
+ if (dinfo->accel)
+ var->accel_flags |= FB_ACCELF_TEXT;
+ else
+ var->accel_flags &= ~FB_ACCELF_TEXT;
+
+ return 0;
+}
+
+static int intelfb_set_fbinfo(struct intelfb_info *dinfo)
+{
+ struct fb_info *info = dinfo->info;
+
+ DBG_MSG("intelfb_set_fbinfo\n");
+
+ info->flags = FBINFO_FLAG_DEFAULT;
+ info->fbops = &intel_fb_ops;
+ info->pseudo_palette = dinfo->pseudo_palette;
+
+ info->pixmap.size = 64*1024;
+ info->pixmap.buf_align = 8;
+ info->pixmap.access_align = 32;
+ info->pixmap.flags = FB_PIXMAP_SYSTEM;
+
+ if (intelfb_init_var(dinfo))
+ return 1;
+
+ info->pixmap.scan_align = 1;
+ strcpy(info->fix.id, dinfo->name);
+ info->fix.smem_start = dinfo->fb.physical;
+ info->fix.smem_len = dinfo->fb.size;
+ info->fix.type = FB_TYPE_PACKED_PIXELS;
+ info->fix.type_aux = 0;
+ info->fix.xpanstep = 8;
+ info->fix.ypanstep = 1;
+ info->fix.ywrapstep = 0;
+ info->fix.mmio_start = dinfo->mmio_base_phys;
+ info->fix.mmio_len = INTEL_REG_SIZE;
+ info->fix.accel = FB_ACCEL_I830;
+ update_dinfo(dinfo, &info->var);
+
+ return 0;
+}
+
+/* Update dinfo to match the active video mode. */
+static void update_dinfo(struct intelfb_info *dinfo,
+ struct fb_var_screeninfo *var)
+{
+ DBG_MSG("update_dinfo\n");
+
+ dinfo->bpp = var->bits_per_pixel;
+ dinfo->depth = intelfb_var_to_depth(var);
+ dinfo->xres = var->xres;
+ dinfo->yres = var->xres;
+ dinfo->pixclock = var->pixclock;
+
+ dinfo->info->fix.visual = dinfo->visual;
+ dinfo->info->fix.line_length = dinfo->pitch;
+
+ switch (dinfo->bpp) {
+ case 8:
+ dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
+ dinfo->pitch = var->xres_virtual;
+ break;
+ case 16:
+ dinfo->visual = FB_VISUAL_TRUECOLOR;
+ dinfo->pitch = var->xres_virtual * 2;
+ break;
+ case 32:
+ dinfo->visual = FB_VISUAL_TRUECOLOR;
+ dinfo->pitch = var->xres_virtual * 4;
+ break;
+ }
+
+ /* Make sure the line length is a aligned correctly. */
+ if (IS_I9XX(dinfo))
+ dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
+ else
+ dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
+
+ if (FIXED_MODE(dinfo))
+ dinfo->pitch = dinfo->initial_pitch;
+
+ dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
+ dinfo->info->fix.line_length = dinfo->pitch;
+ dinfo->info->fix.visual = dinfo->visual;
+}
+
+/* fbops functions */
+
+/***************************************************************
+ * fbdev interface *
+ ***************************************************************/
+
+static int intelfb_open(struct fb_info *info, int user)
+{
+ struct intelfb_info *dinfo = GET_DINFO(info);
+
+ if (user)
+ dinfo->open++;
+
+ return 0;
+}
+
+static int intelfb_release(struct fb_info *info, int user)
+{
+ struct intelfb_info *dinfo = GET_DINFO(info);
+
+ if (user) {
+ dinfo->open--;
+ msleep(1);
+ if (!dinfo->open)
+ intelfbhw_disable_irq(dinfo);
+ }
+
+ return 0;
+}
+
+static int intelfb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ int change_var = 0;
+ struct fb_var_screeninfo v;
+ struct intelfb_info *dinfo;
+ static int first = 1;
+ int i;
+ /* Good pitches to allow tiling. Don't care about pitches < 1024. */
+ static const int pitches[] = {
+ 128 * 8,
+ 128 * 16,
+ 128 * 32,
+ 128 * 64,
+ 0
+ };
+
+ DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
+
+ dinfo = GET_DINFO(info);
+
+ /* update the pitch */
+ if (intelfbhw_validate_mode(dinfo, var) != 0)
+ return -EINVAL;
+
+ v = *var;
+
+ for (i = 0; pitches[i] != 0; i++) {
+ if (pitches[i] >= v.xres_virtual) {
+ v.xres_virtual = pitches[i];
+ break;
+ }
+ }
+
+ /* Check for a supported bpp. */
+ if (v.bits_per_pixel <= 8)
+ v.bits_per_pixel = 8;
+ else if (v.bits_per_pixel <= 16) {
+ if (v.bits_per_pixel == 16)
+ v.green.length = 6;
+ v.bits_per_pixel = 16;
+ } else if (v.bits_per_pixel <= 32)
+ v.bits_per_pixel = 32;
+ else
+ return -EINVAL;
+
+ change_var = ((info->var.xres != var->xres) ||
+ (info->var.yres != var->yres) ||
+ (info->var.xres_virtual != var->xres_virtual) ||
+ (info->var.yres_virtual != var->yres_virtual) ||
+ (info->var.bits_per_pixel != var->bits_per_pixel) ||
+ memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
+ memcmp(&info->var.green, &var->green,
+ sizeof(var->green)) ||
+ memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
+
+ if (FIXED_MODE(dinfo) &&
+ (change_var ||
+ var->yres_virtual > dinfo->initial_var.yres_virtual ||
+ var->yres_virtual < dinfo->initial_var.yres ||
+ var->xoffset || var->nonstd)) {
+ if (first) {
+ ERR_MSG("Changing the video mode is not supported.\n");
+ first = 0;
+ }
+ return -EINVAL;
+ }
+
+ switch (intelfb_var_to_depth(&v)) {
+ case 8:
+ v.red.offset = v.green.offset = v.blue.offset = 0;
+ v.red.length = v.green.length = v.blue.length = 8;
+ v.transp.offset = v.transp.length = 0;
+ break;
+ case 15:
+ v.red.offset = 10;
+ v.green.offset = 5;
+ v.blue.offset = 0;
+ v.red.length = v.green.length = v.blue.length = 5;
+ v.transp.offset = v.transp.length = 0;
+ break;
+ case 16:
+ v.red.offset = 11;
+ v.green.offset = 5;
+ v.blue.offset = 0;
+ v.red.length = 5;
+ v.green.length = 6;
+ v.blue.length = 5;
+ v.transp.offset = v.transp.length = 0;
+ break;
+ case 24:
+ v.red.offset = 16;
+ v.green.offset = 8;
+ v.blue.offset = 0;
+ v.red.length = v.green.length = v.blue.length = 8;
+ v.transp.offset = v.transp.length = 0;
+ break;
+ case 32:
+ v.red.offset = 16;
+ v.green.offset = 8;
+ v.blue.offset = 0;
+ v.red.length = v.green.length = v.blue.length = 8;
+ v.transp.offset = 24;
+ v.transp.length = 8;
+ break;
+ }
+
+ if (v.xoffset < 0)
+ v.xoffset = 0;
+ if (v.yoffset < 0)
+ v.yoffset = 0;
+
+ if (v.xoffset > v.xres_virtual - v.xres)
+ v.xoffset = v.xres_virtual - v.xres;
+ if (v.yoffset > v.yres_virtual - v.yres)
+ v.yoffset = v.yres_virtual - v.yres;
+
+ v.red.msb_right = v.green.msb_right = v.blue.msb_right =
+ v.transp.msb_right = 0;
+
+ *var = v;
+
+ return 0;
+}
+
+static int intelfb_set_par(struct fb_info *info)
+{
+ struct intelfb_hwstate *hw;
+ struct intelfb_info *dinfo = GET_DINFO(info);
+
+ if (FIXED_MODE(dinfo)) {
+ ERR_MSG("Changing the video mode is not supported.\n");
+ return -EINVAL;
+ }
+
+ hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
+ if (!hw)
+ return -ENOMEM;
+
+ DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
+ info->var.yres, info->var.bits_per_pixel);
+
+ /*
+ * Disable VCO prior to timing register change.
+ */
+ OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
+
+ intelfb_blank(FB_BLANK_POWERDOWN, info);
+
+ if (ACCEL(dinfo, info))
+ intelfbhw_2d_stop(dinfo);
+
+ memcpy(hw, &dinfo->save_state, sizeof(*hw));
+ if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
+ goto invalid_mode;
+ if (intelfbhw_program_mode(dinfo, hw, 0))
+ goto invalid_mode;
+
+#if REGDUMP > 0
+ intelfbhw_read_hw_state(dinfo, hw, 0);
+ intelfbhw_print_hw_state(dinfo, hw);
+#endif
+
+ update_dinfo(dinfo, &info->var);
+
+ if (ACCEL(dinfo, info))
+ intelfbhw_2d_start(dinfo);
+
+ intelfb_pan_display(&info->var, info);
+
+ intelfb_blank(FB_BLANK_UNBLANK, info);
+
+ if (ACCEL(dinfo, info)) {
+ info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
+ FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
+ FBINFO_HWACCEL_IMAGEBLIT;
+ } else
+ info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+
+ kfree(hw);
+ return 0;
+invalid_mode:
+ kfree(hw);
+ return -EINVAL;
+}
+
+static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct fb_info *info)
+{
+ struct intelfb_info *dinfo = GET_DINFO(info);
+
+#if VERBOSE > 0
+ DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
+#endif
+
+ if (regno > 255)
+ return 1;
+
+ if (dinfo->depth == 8) {
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ intelfbhw_setcolreg(dinfo, regno, red, green, blue,
+ transp);
+ }
+
+ if (regno < 16) {
+ switch (dinfo->depth) {
+ case 15:
+ dinfo->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
+ ((green & 0xf800) >> 6) |
+ ((blue & 0xf800) >> 11);
+ break;
+ case 16:
+ dinfo->pseudo_palette[regno] = (red & 0xf800) |
+ ((green & 0xfc00) >> 5) |
+ ((blue & 0xf800) >> 11);
+ break;
+ case 24:
+ dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
+ (green & 0xff00) |
+ ((blue & 0xff00) >> 8);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static int intelfb_blank(int blank, struct fb_info *info)
+{
+ intelfbhw_do_blank(blank, info);
+ return 0;
+}
+
+static int intelfb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ intelfbhw_pan_display(var, info);
+ return 0;
+}
+
+/* When/if we have our own ioctls. */
+static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
+{
+ int retval = 0;
+ struct intelfb_info *dinfo = GET_DINFO(info);
+ u32 pipe = 0;
+
+ switch (cmd) {
+ case FBIO_WAITFORVSYNC:
+ if (get_user(pipe, (__u32 __user *)arg))
+ return -EFAULT;
+
+ retval = intelfbhw_wait_for_vsync(dinfo, pipe);
+ break;
+ default:
+ break;
+ }
+
+ return retval;
+}
+
+static void intelfb_fillrect (struct fb_info *info,
+ const struct fb_fillrect *rect)
+{
+ struct intelfb_info *dinfo = GET_DINFO(info);
+ u32 rop, color;
+
+#if VERBOSE > 0
+ DBG_MSG("intelfb_fillrect\n");
+#endif
+
+ if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
+ cfb_fillrect(info, rect);
+ return;
+ }
+
+ if (rect->rop == ROP_COPY)
+ rop = PAT_ROP_GXCOPY;
+ else /* ROP_XOR */
+ rop = PAT_ROP_GXXOR;
+
+ if (dinfo->depth != 8)
+ color = dinfo->pseudo_palette[rect->color];
+ else
+ color = rect->color;
+
+ intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
+ rect->width, rect->height, color,
+ dinfo->pitch, info->var.bits_per_pixel,
+ rop);
+}
+
+static void intelfb_copyarea(struct fb_info *info,
+ const struct fb_copyarea *region)
+{
+ struct intelfb_info *dinfo = GET_DINFO(info);
+
+#if VERBOSE > 0
+ DBG_MSG("intelfb_copyarea\n");
+#endif
+
+ if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
+ cfb_copyarea(info, region);
+ return;
+ }
+
+ intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
+ region->dy, region->width, region->height,
+ dinfo->pitch, info->var.bits_per_pixel);
+}
+
+static void intelfb_imageblit(struct fb_info *info,
+ const struct fb_image *image)
+{
+ struct intelfb_info *dinfo = GET_DINFO(info);
+ u32 fgcolor, bgcolor;
+
+#if VERBOSE > 0
+ DBG_MSG("intelfb_imageblit\n");
+#endif
+
+ if (!ACCEL(dinfo, info) || dinfo->depth == 4
+ || image->depth != 1) {
+ cfb_imageblit(info, image);
+ return;
+ }
+
+ if (dinfo->depth != 8) {
+ fgcolor = dinfo->pseudo_palette[image->fg_color];
+ bgcolor = dinfo->pseudo_palette[image->bg_color];
+ } else {
+ fgcolor = image->fg_color;
+ bgcolor = image->bg_color;
+ }
+
+ if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
+ image->height, image->data,
+ image->dx, image->dy,
+ dinfo->pitch, info->var.bits_per_pixel)) {
+ cfb_imageblit(info, image);
+ return;
+ }
+}
+
+static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
+{
+ struct intelfb_info *dinfo = GET_DINFO(info);
+ u32 physical;
+#if VERBOSE > 0
+ DBG_MSG("intelfb_cursor\n");
+#endif
+
+ if (!dinfo->hwcursor)
+ return -ENODEV;
+
+ intelfbhw_cursor_hide(dinfo);
+
+ /* If XFree killed the cursor - restore it */
+ physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
+ (dinfo->cursor.offset << 12);
+
+ if (INREG(CURSOR_A_BASEADDR) != physical) {
+ u32 fg, bg;
+
+ DBG_MSG("the cursor was killed - restore it !!\n");
+ DBG_MSG("size %d, %d pos %d, %d\n",
+ cursor->image.width, cursor->image.height,
+ cursor->image.dx, cursor->image.dy);
+
+ intelfbhw_cursor_init(dinfo);
+ intelfbhw_cursor_reset(dinfo);
+ intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
+ cursor->image.dy);
+
+ if (dinfo->depth != 8) {
+ fg =dinfo->pseudo_palette[cursor->image.fg_color];
+ bg =dinfo->pseudo_palette[cursor->image.bg_color];
+ } else {
+ fg = cursor->image.fg_color;
+ bg = cursor->image.bg_color;
+ }
+ intelfbhw_cursor_setcolor(dinfo, bg, fg);
+ intelfbhw_cursor_load(dinfo, cursor->image.width,
+ cursor->image.height,
+ dinfo->cursor_src);
+
+ if (cursor->enable)
+ intelfbhw_cursor_show(dinfo);
+ return 0;
+ }
+
+ if (cursor->set & FB_CUR_SETPOS) {
+ u32 dx, dy;
+
+ dx = cursor->image.dx - info->var.xoffset;
+ dy = cursor->image.dy - info->var.yoffset;
+
+ intelfbhw_cursor_setpos(dinfo, dx, dy);
+ }
+
+ if (cursor->set & FB_CUR_SETSIZE) {
+ if (cursor->image.width > 64 || cursor->image.height > 64)
+ return -ENXIO;
+
+ intelfbhw_cursor_reset(dinfo);
+ }
+
+ if (cursor->set & FB_CUR_SETCMAP) {
+ u32 fg, bg;
+
+ if (dinfo->depth != 8) {
+ fg = dinfo->pseudo_palette[cursor->image.fg_color];
+ bg = dinfo->pseudo_palette[cursor->image.bg_color];
+ } else {
+ fg = cursor->image.fg_color;
+ bg = cursor->image.bg_color;
+ }
+
+ intelfbhw_cursor_setcolor(dinfo, bg, fg);
+ }
+
+ if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
+ u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
+ u32 size = s_pitch * cursor->image.height;
+ u8 *dat = (u8 *) cursor->image.data;
+ u8 *msk = (u8 *) cursor->mask;
+ u8 src[64];
+ u32 i;
+
+ if (cursor->image.depth != 1)
+ return -ENXIO;
+
+ switch (cursor->rop) {
+ case ROP_XOR:
+ for (i = 0; i < size; i++)
+ src[i] = dat[i] ^ msk[i];
+ break;
+ case ROP_COPY:
+ default:
+ for (i = 0; i < size; i++)
+ src[i] = dat[i] & msk[i];
+ break;
+ }
+
+ /* save the bitmap to restore it when XFree will
+ make the cursor dirty */
+ memcpy(dinfo->cursor_src, src, size);
+
+ intelfbhw_cursor_load(dinfo, cursor->image.width,
+ cursor->image.height, src);
+ }
+
+ if (cursor->enable)
+ intelfbhw_cursor_show(dinfo);
+
+ return 0;
+}
+
+static int intelfb_sync(struct fb_info *info)
+{
+ struct intelfb_info *dinfo = GET_DINFO(info);
+
+#if VERBOSE > 0
+ DBG_MSG("intelfb_sync\n");
+#endif
+
+ if (dinfo->ring_lockup)
+ return 0;
+
+ intelfbhw_do_sync(dinfo);
+ return 0;
+}
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 01:38:57 +0000