/*
* intelfb
*
* Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G
* integrated graphics chips.
*
* Copyright (C) 2002, 2003 David Dawes <dawes@tungstengraphics.com>
*
* 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 1.15 2003/02/06 17:50:08 dawes Exp $ */
/* $TG$ */
/*
* 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)
*
* TODO:
* -
*
* Wish List:
* - Check clock limits for 845G and 830M.
* - Test on SMP config.
* - Check if any functions/data should be __devinit, etc.
* - See if it's feasible to get/use DDC/EDID info.
* - MTRR support.
* - See if module unloading can work.
* - See if driver works built-in to 2.5.32 kernel.
* - Check acceleration problems on 830M-855GM.
* - Add gtf support so that arbitrary modes can be calculated.
* - Port driver to latest 2.5.x fbdev interface.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/console.h>
#include <linux/selection.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/vmalloc.h>
#include <linux/kd.h>
#include <linux/vt_kern.h>
#include <linux/pagemap.h>
#include <linux/version.h>
#include <asm/io.h>
#include <video/fbcon.h>
#include <video/fbcon-cfb8.h>
#include <video/fbcon-cfb16.h>
#include <video/fbcon-cfb32.h>
#include "intelfb.h"
#include "builtinmodes.c"
/*
* 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[] __devinitdata = {
{ 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 },
{ 0, }
};
/* Global data */
static int num_registered = 0;
/* Forward declarations */
static int intelfb_get_fix(struct fb_fix_screeninfo *fix, int con,
struct fb_info *info);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
static int intelfb_get_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
#endif
static int intelfb_set_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
static int intelfb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info);
static int intelfb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info);
static int intelfb_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg, int con,
struct fb_info *info);
static int intelfb_switch(int con, struct fb_info *info);
static int intelfb_updatevar(int con, struct fb_info *info);
static int intelfb_blank(int blank, struct fb_info *info);
static int intelfb_getcolreg(unsigned regno, unsigned *red, unsigned *green,
unsigned *blue, unsigned *transp,
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_pci_register(struct pci_dev *pdev,
const struct pci_device_id *ent);
static void __devexit intelfb_pci_unregister(struct pci_dev *pdev);
static int __devinit intelfb_set_fbinfo(struct intelfb_info *dinfo);
static void intelfb_set_dispsw(struct intelfb_info *dinfo,
struct display *disp);
static void mode_to_var(const struct fb_videomode *mode,
struct fb_var_screeninfo *var, u32 bpp);
static int intelfb_set_mode(struct intelfb_info *dinfo,
struct fb_var_screeninfo *var,
struct display *disp, int blank);
static void intelfb_do_install_cmap(int con, struct fb_info *info);
static void update_dinfo(struct intelfb_info *dinfo,
struct fb_var_screeninfo *var, struct display *disp);
static void intelfb_flashcursor(unsigned long ptr);
static void fbcon_intelfb_setup(struct display *p);
static void fbcon_intelfb_bmove(struct display *p, int sy, int sx, int dy,
int dx, int height, int width);
static void fbcon_intelfb_clear(struct vc_data *conp, struct display *p,
int sy, int sx, int height, int width);
static void fbcon_intelfb_putc(struct vc_data *conp, struct display *p,
int c, int yy, int xx);
static void fbcon_intelfb_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count,
int yy, int xx);
static void fbcon_intelfb_revc(struct display *p, int xx, int yy);
static void fbcon_intelfb_clear_margins(struct vc_data *conp,
struct display *p, int bottom_only);
static void fbcon_intelfb_cursor(struct display *disp, int mode, int x, int y);
/* fb ops */
static struct fb_ops intel_fb_ops = {
.owner = THIS_MODULE,
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
.fb_get_fix = intelfb_get_fix,
.fb_get_var = intelfb_get_var,
#else
.fb_blank = intelfb_blank,
.fb_setcolreg = intelfb_setcolreg,
#endif
.fb_set_var = intelfb_set_var,
.fb_get_cmap = intelfb_get_cmap,
.fb_set_cmap = intelfb_set_cmap,
.fb_pan_display = intelfbhw_pan_display,
.fb_ioctl = intelfb_ioctl
};
/* PCI driver module table */
static struct pci_driver intelfb_driver = {
.name = INTELFB_MODULE_NAME,
.id_table = intelfb_pci_table,
.probe = intelfb_pci_register,
.remove = __devexit_p(intelfb_pci_unregister)
};
/* fbcon acceleration */
static struct display_switch fbcon_intelfb = {
.setup = fbcon_intelfb_setup,
.bmove = fbcon_intelfb_bmove,
.clear = fbcon_intelfb_clear,
.putc = fbcon_intelfb_putc,
.putcs = fbcon_intelfb_putcs,
.revc = fbcon_intelfb_revc,
.cursor = fbcon_intelfb_cursor,
.clear_margins = fbcon_intelfb_clear_margins,
.fontwidthmask = FONTWIDTHRANGE(4, 16)
};
/* Module description/parameters */
MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>");
MODULE_DESCRIPTION(
"Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS " chipsets");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
INTELFB_INT_PARAM(accel, 1, "Enable console acceleration");
INTELFB_INT_PARAM(hwcursor, 1, "Enable HW cursor");
INTELFB_INT_PARAM(fixed, 0, "Disable mode switching");
INTELFB_INT_PARAM(noinit, 0, "Don't initialise graphics mode when loading");
INTELFB_INT_PARAM(noregister, 0, "Don't register, just probe and exit (debug)");
INTELFB_INT_PARAM(probeonly, 0, "Do a minimal probe (debug)");
INTELFB_INT_PARAM(idonly, 0,
"Just identify without doing anything else (debug)");
INTELFB_INT_PARAM(bailearly, 0, "Bail out early, depending on value (debug)");
INTELFB_STR_PARAM(mode, NULL,
"Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
INTELFB_STR_PARAM(font, NULL, "Specify which built-in font to use");
/* module load/unload entry points */
int __init
intelfb_init(void)
{
DBG_MSG("intelfb_init\n");
INF_MSG("Framebuffer driver for "
"Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
INF_MSG("Version " INTELFB_VERSION
", written by David Dawes <dawes@tungstengraphics.com>\n");
if (idonly)
return -ENODEV;
return pci_module_init(&intelfb_driver);
}
void __exit
intelfb_exit(void)
{
DBG_MSG("intelfb_exit\n");
pci_unregister_driver(&intelfb_driver);
}
#ifndef MODULE
#define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
#define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name), 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_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;
}
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_bool(this_opt, "hwcursor", &hwcursor))
;
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, "font="))
font = get_opt_string(this_opt, "font=");
else if (OPT_EQUAL(this_opt, "mode="))
mode = get_opt_string(this_opt, "mode=");
else
mode = this_opt;
}
return 0;
}
#endif
#ifdef MODULE
module_init(intelfb_init);
module_exit(intelfb_exit);
#endif
static void
cleanup(struct intelfb_info *dinfo)
{
DBG_MSG("cleanup\n");
if (!dinfo)
return;
if (dinfo->registered)
unregister_framebuffer(&(dinfo->info));
if (&dinfo->cursor.timer)
del_timer_sync(&dinfo->cursor.timer);
#if USE_SYNC_PAGE
if (dinfo->syncpage_virt) {
struct page *pg = virt_to_page((void *)dinfo->syncpage_virt);
if (pg) {
put_page(pg);
UnlockPage(pg);
free_page(dinfo->syncpage_virt);
}
}
#endif
if (dinfo->cursor_base)
iounmap((void *)dinfo->cursor_base);
if (dinfo->ring_base)
iounmap((void *)dinfo->ring_base);
if (dinfo->fb_base)
iounmap((void *)dinfo->fb_base);
if (dinfo->mmio_base)
iounmap((void *)dinfo->mmio_base);
if (dinfo->mmio_base_phys && dinfo->pdev)
release_mem_region(dinfo->mmio_base_phys,
pci_resource_len(dinfo->pdev, 1));
if (dinfo->fb_base_phys && dinfo->pdev)
release_mem_region(dinfo->fb_base_phys,
pci_resource_len(dinfo->pdev, 0));
kfree(dinfo);
}
#define bailout(dinfo) do { \
DBG_MSG("bailout\n"); \
cleanup(dinfo); \
INF_MSG("Not going to register framebuffer, exiting...\n"); \
return -ENODEV; \
} while (0)
int
intelfb_var_to_depth(const struct fb_var_screeninfo *var)
{
#if 0
DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
var->bits_per_pixel, var->green.length);
#endif
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 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->xres_virtual = var->xres;
#if ALLOCATE_FOR_PANNING
/* Allow use of half of the video ram for panning */
var->yres_virtual =
dinfo->initial_video_ram / 2 / dinfo->initial_pitch;
if (var->yres_virtual < var->yres)
var->yres_virtual = var->yres;
#else
var->yres_virtual = var->yres;
#endif
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_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct intelfb_info *dinfo;
int i, j, err;
const char *s;
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;
}
if (!(dinfo = kmalloc(sizeof(struct intelfb_info), GFP_KERNEL))) {
ERR_MSG("Could not allocate memory for intelfb_info.\n");
return -ENODEV;
}
memset(dinfo, 0, sizeof(*dinfo));
dinfo->pdev = pdev;
/* Enable device. */
if ((err = pci_enable_device(pdev))) {
ERR_MSG("Cannot enable device.\n");
cleanup(dinfo);
return -ENODEV;
}
/* Set base addresses. */
dinfo->fb_base_phys = pci_resource_start(pdev, 0);
dinfo->mmio_base_phys = pci_resource_start(pdev, 1);
DBG_MSG("fb region: 0x%lx/0x%lx, MMIO region: 0x%lx/0x%lx\n",
pci_resource_start(pdev, 0), pci_resource_len(pdev, 0),
pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
/* Reserve the fb and MMIO regions */
if (!request_mem_region(dinfo->fb_base_phys, pci_resource_len(pdev, 0),
INTELFB_MODULE_NAME)) {
ERR_MSG("Cannot reserve FB region.\n");
cleanup(dinfo);
return -ENODEV;
}
if (!request_mem_region(dinfo->mmio_base_phys,
pci_resource_len(pdev, 1),
INTELFB_MODULE_NAME)) {
ERR_MSG("Cannot reserve MMIO region.\n");
cleanup(dinfo);
return -ENODEV;
}
/* Map the MMIO region. */
dinfo->mmio_base = (u32)ioremap(dinfo->mmio_base_phys, INTEL_REG_SIZE);
if (!dinfo->mmio_base) {
ERR_MSG("Cannot map MMIO.\n");
cleanup(dinfo);
return -ENODEV;
}
/* Get the chipset info. */
dinfo->pci_chipset = pdev->device;
if (intelfbhw_get_chipset(pdev, &dinfo->name, &dinfo->chipset,
&dinfo->mobile)) {
cleanup(dinfo);
return -ENODEV;
}
if (intelfbhw_get_memory(pdev, &dinfo->aperture_size,
&dinfo->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(dinfo->aperture_size),
BtoKB(dinfo->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;
}
/*
* For now, set the video ram size to the stolen size rounded
* down to a page multiple. This means the agpgart driver doesn't
* need to get involved.
*/
dinfo->video_ram = ROUND_DOWN_TO_PAGE(dinfo->stolen_size);
/* Allocate space for the ring buffer and HW cursor. */
if (dinfo->accel) {
dinfo->ring_size = RINGBUFFER_SIZE;
dinfo->video_ram -= dinfo->ring_size;
dinfo->ring_base_phys = dinfo->fb_base_phys + dinfo->video_ram;
dinfo->ring_tail_mask = dinfo->ring_size - 1;
}
if (dinfo->hwcursor && !dinfo->mobile) {
dinfo->cursor_size = HW_CURSOR_SIZE;
dinfo->video_ram -= dinfo->cursor_size;
dinfo->cursor_offset = dinfo->video_ram;
dinfo->cursor_base_phys = dinfo->fb_base_phys +
dinfo->cursor_offset;
}
/* Framebuffer starts at offset 0. */
dinfo->fb_offset = 0;
dinfo->video_ram -= dinfo->fb_offset;
/* Map the FB region. Only map the memory used as video ram. */
dinfo->fb_base = (u32)ioremap(dinfo->fb_base_phys + dinfo->fb_offset,
dinfo->video_ram);
if (!dinfo->fb_base) {
ERR_MSG("Cannot map framebuffer.\n");
cleanup(dinfo);
return -ENODEV;
}
if (dinfo->accel) {
/* Map the ring buffer. */
dinfo->ring_base = (u32)ioremap(dinfo->ring_base_phys,
dinfo->ring_size);
if (!dinfo->ring_base) {
dinfo->accel = 0;
WRN_MSG("Cannot map ring buffer: "
"acceleration disabled.\n");
}
}
if (dinfo->hwcursor && !dinfo->mobile) {
/* Map the HW cursor buffer. */
dinfo->cursor_base = (u32)ioremap(dinfo->cursor_base_phys,
dinfo->cursor_size);
if (!dinfo->cursor_base) {
WRN_MSG("Cannot map the HW cursor space: "
"HW cursor disabled.\n");
dinfo->hwcursor = 0;
}
}
/*
* For mobile platforms, a physical page address is needed for the
* HW cursor. Allocate it here and insert it into the GTT.
* If/when this driver is modified to be aware of the agpgart
* driver, it can be used to obtain/insert the page.
*/
if (dinfo->hwcursor && dinfo->mobile) {
#if !MOBILE_HW_CURSOR
dinfo->hwcursor = 0;
INF_MSG("HW cursor is not supported for mobile platforms.\n");
#else
struct page *pg;
/*
* Allocate a page of physical memory for the graphics
* engine to write to for synchronisation purposes.
*/
pg = alloc_page(GFP_KERNEL);
if (!pg) {
WRN_MSG("Cannot allocate a page for the HW cursor. "
"Disabling the HW cursor.");
dinfo->hwcursor = 0;
} else {
get_page(pg);
LockPage(pg);
dinfo->cursor_page_virt = (u32)page_address(pg);
dinfo->cursor_base_real =
virt_to_phys(page_address(pg));
/*
* XXX Add code to insert GTT entry and map the
* appropriate part of the aperture as
* dinfo->cursor_base.
*/
}
#endif
}
DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%x)\n",
dinfo->fb_base_phys, dinfo->fb_offset, dinfo->video_ram,
dinfo->fb_base);
DBG_MSG("MMIO: 0x%x/0x%x (0x%x)\n",
dinfo->mmio_base_phys, INTEL_REG_SIZE, dinfo->mmio_base);
DBG_MSG("ring buffer: 0x%x/0x%x (0x%x)\n",
dinfo->ring_base_phys, dinfo->ring_size, dinfo->ring_base);
DBG_MSG("HW cursor: 0x%x/0x%x (0x%x) (offset 0x%x) (phys 0x%x)\n",
dinfo->cursor_base_phys, dinfo->cursor_size,
dinfo->cursor_base, dinfo->cursor_offset,
dinfo->cursor_base_real);
DBG_MSG("options: accel = %d, fixed = %d, noinit = %d\n",
accel, fixed, noinit);
DBG_MSG("options: mode = \"%s\", font = \"%s\"\n",
mode ? mode : "", font ? font : "");
if (probeonly)
bailout(dinfo);
dinfo->fixed_mode = fixed;
/*
* Check if the LVDS port or any DVO ports are enabled. If so,
* don't allow mode switching.
*/
if ((s = intelfbhw_check_non_crt(dinfo))) {
WRN_MSG("Non-CRT device is enabled (%s). "
"Disabling mode switching.\n", s);
dinfo->fixed_mode = 1;
}
if (bailearly == 1)
bailout(dinfo);
if (dinfo->fixed_mode && 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 (ORIG_VIDEO_ISVGA == VIDEO_TYPE_VLFB)
get_initial_mode(dinfo);
if (bailearly == 3)
bailout(dinfo);
#if 0
if (dinfo->fixed_mode) {
/*
* XXX Check video ram amounts and remap if the region already
* mapped is too small because of ring/cursor allocations.
*/
update_dinfo(dinfo, &dinfo->initial_var, NULL);
}
#endif
/* currcon will be set by the first switch. */
dinfo->currcon = -1;
dinfo->vc_mode = KD_TEXT;
#if USE_SYNC_PAGE
if (dinfo->accel) {
struct page *pg;
/*
* Allocate a page of physical memory for the graphics
* engine to write to for synchronisation purposes.
*/
pg = alloc_page(GFP_KERNEL);
if (!pg) {
WRN_MSG("Cannot allocate a page for 2D accel. "
"Disabling acceleration.");
dinfo->accel = 0;
} else {
get_page(pg);
LockPage(pg);
dinfo->syncpage_virt = (u32)page_address(pg);
dinfo->syncpage_phys = virt_to_phys(page_address(pg));
/* Write zero to the first dword */
writel(0, dinfo->syncpage_virt);
DBG_MSG("2D sync page: 0x%x (0x%x)\n",
dinfo->syncpage_phys, dinfo->syncpage_virt);
}
}
#endif
if (bailearly == 4)
bailout(dinfo);
if (intelfb_set_fbinfo(dinfo)) {
cleanup(dinfo);
return -ENODEV;
}
if (bailearly == 5)
bailout(dinfo);
for (i = 0; i < 16; i++) {
j = color_table[i];
dinfo->palette[i].red = default_red[j];
dinfo->palette[i].green = default_grn[j];
dinfo->palette[i].blue = default_blu[j];
}
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);
#if TEST_MODE_TO_HW
{
struct intelfb_hwstate hw;
struct fb_var_screeninfo var;
int i;
for (i = 0; i < num_modes; i++) {
mode_to_var(&modedb[i], &var, 8);
intelfbhw_read_hw_state(dinfo, &hw, 0);
if (intelfbhw_mode_to_hw(dinfo, &hw, &var)) {
DGB_MSG("Failed to set hw for mode %dx%d\n",
var.xres, var.yres);
} else {
DGB_MSG("HW state for mode %dx%d\n",
var.xres, var.yres);
intelfbhw_print_hw_state(dinfo, &hw);
}
}
}
#endif
/* Cursor initialisation */
if (dinfo->hwcursor) {
init_timer(&dinfo->cursor.timer);
dinfo->cursor.timer.function = intelfb_flashcursor;
dinfo->cursor.timer.data = (unsigned long)dinfo;
dinfo->cursor.state = CM_ERASE;
spin_lock_init(&dinfo->DAClock);
}
if (bailearly == 19)
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;
return 0;
}
static void __devexit
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);
pci_set_drvdata(pdev, NULL);
}
/*
* A simplified version of fb_find_mode. The latter doesn't seem to work
* too well -- haven't figured out why yet.
*/
static int
intelfb_find_mode(struct fb_var_screeninfo *var,
struct fb_info *info, const char *mode_option,
const struct fb_videomode *db, unsigned int dbsize,
const struct fb_videomode *default_mode,
unsigned int default_bpp)
{
int i;
char mname[20] = "", tmp[20] = "", *p, *q;
unsigned int bpp = 0;
DBG_MSG("intelfb_find_mode\n");
/* Set up defaults */
if (!db) {
db = modedb;
dbsize = sizeof(modedb) / sizeof(*modedb);
}
if (!default_bpp)
#if defined(FBCON_HAS_CFB8)
default_bpp = 8;
#elif defined(FBCON_HAS_CFB16)
default_bpp = 16;
#elif defined(FBCON_HAS_CFB32)
default_bpp = 32;
#endif
var->activate = FB_ACTIVATE_TEST;
if (mode_option && *mode_option) {
if (strlen(mode_option) < sizeof(tmp) - 1) {
strcat(tmp, mode_option);
q = tmp;
p = strsep(&q, "-");
strcat(mname, p);
if (q) {
p = strsep(&q, "@");
bpp = simple_strtoul(p, NULL, 10);
if (q) {
strcat(mname, "@");
strcat(mname, q);
}
}
}
if (!bpp)
bpp = default_bpp;
DBG_MSG("Mode is %s, bpp %d\n", mname, bpp);
}
if (*mname) {
for (i = 0; i < dbsize; i++) {
if (!strncmp(db[i].name, mname, strlen(mname))) {
mode_to_var(&db[i], var, bpp);
if (!intelfb_set_var(var, -1, info))
return 1;
}
}
}
if (!default_mode)
return 0;
mode_to_var(default_mode, var, default_bpp);
if (!intelfb_set_var(var, -1, info))
return 3;
for (i = 0; i < dbsize; i++) {
mode_to_var(&db[i], var, default_bpp);
if (!intelfb_set_var(var, -1, info))
return 4;
}
return 0;
}
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 int __devinit
intelfb_init_disp_var(struct intelfb_info *dinfo)
{
int msrc = 0;
DBG_MSG("intelfb_init_disp_var\n");
if (dinfo->fixed_mode) {
dinfo->disp.var = dinfo->initial_var;
msrc = 5;
} else {
if (mode) {
msrc = intelfb_find_mode(&dinfo->disp.var,
&dinfo->info, mode,
modedb, num_modes, NULL, 0);
if (msrc)
msrc |= 8;
}
if (!msrc) {
msrc = intelfb_find_mode(&dinfo->disp.var,
&dinfo->info, PREFERRED_MODE,
modedb, num_modes,
&modedb[DFLT_MODE], 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", dinfo->disp.var.xres,
dinfo->disp.var.yres, intelfb_var_to_depth(&dinfo->disp.var),
var_to_refresh(&dinfo->disp.var));
DBG_MSG("Initial video mode is from %d.\n", msrc);
if (dinfo->accel)
dinfo->disp.var.accel_flags |= FB_ACCELF_TEXT;
else
dinfo->disp.var.accel_flags &= ~FB_ACCELF_TEXT;
return 0;
}
static void
intelfb_set_dispsw(struct intelfb_info *dinfo, struct display *disp)
{
DBG_MSG("intelfb_set_dispsw: (bpp is %d)\n", disp->var.bits_per_pixel);
disp->dispsw_data = NULL;
disp->dispsw = NULL;
switch (disp->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
disp->dispsw_data = &dinfo->con_cmap.cfb16;
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
disp->dispsw_data = &dinfo->con_cmap.cfb32;
break;
#endif
default:
WRN_MSG("Setting fbcon_dummy renderer (bpp is %d).\n",
disp->var.bits_per_pixel);
disp->dispsw = &fbcon_dummy;
}
/* For all supported bpp. */
if (!disp->dispsw)
disp->dispsw = &fbcon_intelfb;
}
static int __devinit
intelfb_init_disp(struct intelfb_info *dinfo)
{
struct fb_info *info;
struct display *disp;
DBG_MSG("intelfb_init_disp\n");
info = &dinfo->info;
disp = &dinfo->disp;
if (intelfb_init_disp_var(dinfo))
return 1;
info->disp = disp;
update_dinfo(dinfo, &disp->var, disp);
intelfb_set_dispsw(dinfo, disp);
dinfo->currcon_display = disp;
return 0;
}
static int __devinit
intelfb_set_fbinfo(struct intelfb_info *dinfo)
{
struct fb_info *info;
DBG_MSG("intelfb_set_fbinfo\n");
info = &dinfo->info;
strcpy(info->modename, dinfo->name);
info->node = NODEV;
info->flags = FBINFO_FLAG_DEFAULT;
info->fbops = &intel_fb_ops;
info->display_fg = NULL;
info->changevar = NULL;
info->switch_con = intelfb_switch;
info->updatevar = intelfb_updatevar;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
info->blank = intelfbhw_do_blank;
#endif
if (intelfb_init_disp(dinfo))
return 1;
return 0;
}
/* Update dinfo to match the active video mode. */
static void
update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var,
struct display *disp)
{
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;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
intelfb_get_fix(&dinfo->info.fix, dinfo->currcon, &dinfo->info);
#endif
switch (dinfo->bpp) {
#ifdef FBCON_HAS_CFB8
case 8:
dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
dinfo->pitch = disp->var.xres_virtual;
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
dinfo->visual = FB_VISUAL_TRUECOLOR;
dinfo->pitch = disp->var.xres_virtual * 2;
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
dinfo->visual = FB_VISUAL_TRUECOLOR;
dinfo->pitch = disp->var.xres_virtual * 4;
break;
#endif
}
/* Make sure the line length is a aligned correctly. */
dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
if (dinfo->fixed_mode)
dinfo->pitch = dinfo->initial_pitch;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
disp->screen_base = (char *)dinfo->fb_base;
disp->visual = dinfo->visual;
disp->line_length = dinfo->pitch;
disp->type = FB_TYPE_PACKED_PIXELS;
disp->type_aux = 0;
disp->ypanstep = 1;
disp->ywrapstep = 0;
#else
dinfo->info.screen_base = (char *)dinfo->fb_base;
dinfo->info.fix.line_length = dinfo->pitch;
dinfo->info.fix.visual = dinfo->visual;
#endif
disp->can_soft_blank = 1;
disp->inverse = 0;
DBG_MSG("disp->scrollmode is 0x%x\n", disp->scrollmode);
if (disp->var.yres_virtual == disp->var.yres &&
!(disp->var.accel_flags & FB_ACCELF_TEXT)) {
/* No space for panning. */
disp->scrollmode = SCROLL_YREDRAW;
} else {
disp->scrollmode = __SCROLL_YMOVE;
}
}
/* fbops functions */
static int
intelfb_get_fix(struct fb_fix_screeninfo *fix, int con, struct fb_info *info)
{
struct intelfb_info *dinfo = GET_DINFO(info);
struct display *disp;
DBG_MSG("intelfb_get_fix\n");
disp = GET_DISP(info, con);
memset(fix, 0, sizeof(*fix));
strcpy(fix->id, dinfo->name);
fix->smem_start = dinfo->fb_base_phys;
fix->smem_len = dinfo->video_ram;
fix->type = FB_TYPE_PACKED_PIXELS;
fix->type_aux = 0;
fix->visual = dinfo->visual;
fix->xpanstep = 8;
fix->ypanstep = 1;
fix->ywrapstep = 0;
fix->line_length = dinfo->pitch;
fix->mmio_start = dinfo->mmio_base_phys;
fix->mmio_len = INTEL_REG_SIZE;
fix->accel = FB_ACCEL_NONE;
return 0;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
static int
intelfb_get_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
{
struct intelfb_info *dinfo = GET_DINFO(info);
DBG_MSG("intelfb_get_var\n");
if (con == -1)
*var = dinfo->disp.var;
else
*var = fb_display[con].var;
return 0;
}
#endif
static int
intelfb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
{
struct display *disp;
int change_var = 0;
struct fb_var_screeninfo v;
struct intelfb_info *dinfo;
int ret;
static int first = 1;
DBG_MSG("intelfb_set_var: con is %d, accel_flags is %d\n",
con, var->accel_flags);
dinfo = GET_DINFO(info);
disp = GET_DISP(info, con);
if (intelfbhw_validate_mode(dinfo, con, var) != 0)
return -EINVAL;
memcpy(&v, var, sizeof(v));
/* Check for a supported bpp. */
if (v.bits_per_pixel <= 8) {
#ifdef FBCON_HAS_CFB8
v.bits_per_pixel = 8;
#else
return -EINVAL;
#endif
} else if (v.bits_per_pixel <= 16) {
#ifdef FBCON_HAS_CFB16
if (v.bits_per_pixel == 16)
v.green.length = 6;
v.bits_per_pixel = 16;
#else
return -EINVAL;
#endif
} else if (v.bits_per_pixel <= 32) {
#ifdef FBCON_HAS_CFB32
v.bits_per_pixel = 32;
#else
return -EINVAL;
#endif
} else
return -EINVAL;
if (con < 0) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
info->var = *var;
#endif
return 0;
}
change_var = ((disp->var.xres != var->xres) ||
(disp->var.yres != var->yres) ||
(disp->var.xres_virtual != var->xres_virtual) ||
(disp->var.yres_virtual != var->yres_virtual) ||
(disp->var.bits_per_pixel != var->bits_per_pixel) ||
memcmp(&disp->var.red, &var->red, sizeof(var->red)) ||
memcmp(&disp->var.green, &var->green,
sizeof(var->green)) ||
memcmp(&disp->var.blue, &var->blue, sizeof(var->blue)));
if (dinfo->fixed_mode &&
(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;
}
if ((var->activate & FB_ACTIVATE_MASK) != FB_ACTIVATE_NOW)
return 0;
switch (intelfb_var_to_depth(&v)) {
#ifdef FBCON_HAS_CFB8
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;
#endif
#ifdef FBCON_HAS_CFB16
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;
#endif
#ifdef FBCON_HAS_CFB32
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;
#endif
}
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;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
info->var = v;
#endif
memcpy(&disp->var, &v, sizeof(v));
update_dinfo(dinfo, &v, disp);
intelfb_set_dispsw(dinfo, disp);
if (change_var) {
if (info && info->changevar)
info->changevar(con);
}
intelfb_blank(1, info);
#if 0
if (dinfo->hwcursor)
intelfbhw_cursor_hide(dinfo);
#endif
intelfbhw_2d_stop(dinfo);
if (!dinfo->fixed_mode) {
mdelay(100);
if ((ret = intelfb_set_mode(dinfo, &v, disp, 1)))
return ret;
mdelay(100);
}
if (dinfo->vc_mode == KD_TEXT) {
intelfb_do_install_cmap(con, info);
if (dinfo->hwcursor) {
del_timer(&dinfo->cursor.timer);
dinfo->cursor.state = CM_ERASE;
if (disp->conp) {
intelfbhw_cursor_init(dinfo);
intelfbhw_cursor_load(dinfo, disp);
dinfo->cursor.redraw = 1;
}
}
mdelay(100);
intelfbhw_2d_start(dinfo);
#if 0
if (dinfo->hwcursor)
intelfbhw_cursor_show(dinfo);
#endif
if (v.yoffset != 0)
intelfbhw_pan_display(&v, con, info);
} else {
dinfo->cursor.enabled = 0;
}
intelfb_blank(0, info);
return 0;
}
static int
intelfb_get_cmap(struct fb_cmap *cmap, int kspc, int con, struct fb_info *info)
{
struct intelfb_info *dinfo = GET_DINFO(info);
struct display *disp = GET_DISP(info, con);
DBG_MSG("intelfb_get_cmap: con = %d, bpp = %d\n", con,
disp->var.bits_per_pixel);
if (con == dinfo->currcon)
return fb_get_cmap(cmap, kspc, intelfb_getcolreg, info);
else if (disp->cmap.len)
fb_copy_cmap(&disp->cmap, cmap, kspc ? 0 : 2);
else {
int cmap_len = (disp->var.bits_per_pixel > 8) ? 16 : 256;
fb_copy_cmap(fb_default_cmap(cmap_len), cmap, kspc ? 0 : 2);
}
return 0;
}
static int
intelfb_set_cmap(struct fb_cmap *cmap, int kspc, int con, struct fb_info *info)
{
struct intelfb_info *dinfo = GET_DINFO(info);
struct display *disp = GET_DISP(info, con);
unsigned int cmap_len;
int err;
DBG_MSG("intelfb_set_cmap: con = %d, bpp = %d\n", con,
disp->var.bits_per_pixel);
cmap_len = (disp->var.bits_per_pixel > 8) ? 16 : 256;
if (!disp->cmap.len) {
err = fb_alloc_cmap(&disp->cmap, cmap_len, 0);
if (err)
return err;
}
if (con == dinfo->currcon)
return FB_SET_CMAP(cmap, kspc, intelfb_setcolreg, info);
else
fb_copy_cmap(cmap, &disp->cmap, kspc ? 0 : 1);
return 0;
}
/* When/if we have our own ioctls. */
static int
intelfb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg, int con, struct fb_info *info)
{
DBG_MSG("intelfb_ioctl\n");
return -EINVAL;
}
static int
intelfb_switch(int con, struct fb_info *info)
{
struct intelfb_info *dinfo = GET_DINFO(info);
struct display *disp;
struct fb_cmap *cmap;
int switchmode = 0;
DBG_MSG("intelfb_switch: con = %d, currcon = %d\n",
con, dinfo->currcon);
disp = GET_DISP(info, con);
if (dinfo->currcon >= 0) {
cmap = &dinfo->currcon_display->cmap;
if (cmap->len)
fb_get_cmap(cmap, 1, intelfb_getcolreg, info);
}
switchmode = (con != dinfo->currcon);
dinfo->currcon = con;
dinfo->vc_mode = con >= 0 ? vt_cons[con]->vc_mode : KD_TEXT;
dinfo->currcon_display = disp;
disp->var.activate = FB_ACTIVATE_NOW;
if (switchmode) {
intelfb_set_var(&disp->var, con, info);
intelfb_do_install_cmap(con, info);
}
return 0;
}
/* Called whenever there's panning. */
static int
intelfb_updatevar(int con, struct fb_info *info)
{
struct display *disp = GET_DISP(info, con);
DBG_MSG("intelfb_updatevar\n");
if (con < 0)
return -EINVAL;
else
return intelfbhw_pan_display(&disp->var, con, info);
}
static int
intelfb_blank(int blank, struct fb_info *info)
{
intelfbhw_do_blank(blank, info);
return 0;
}
static int
intelfb_getcolreg(unsigned regno, unsigned *red, unsigned *green,
unsigned *blue, unsigned *transp, struct fb_info *info)
{
struct intelfb_info *dinfo = GET_DINFO(info);
#if 0
DBG_MSG("intelfb_getcolreg\n");
#endif
if (regno > 255)
return 1;
*red = (dinfo->palette[regno].red<<8) | dinfo->palette[regno].red;
*green = (dinfo->palette[regno].green<<8) | dinfo->palette[regno].green;
*blue = (dinfo->palette[regno].blue<<8) | dinfo->palette[regno].blue;
*transp = 0;
return 0;
}
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 1
DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
#endif
if ((dinfo->depth > 8 && regno > 16) || regno > 255)
return 1;
switch (dinfo->depth) {
#ifdef FBCON_HAS_CFB8
case 8:
{
red >>= 8;
green >>= 8;
blue >>= 8;
dinfo->palette[regno].red = red;
dinfo->palette[regno].green = green;
dinfo->palette[regno].blue = blue;
intelfbhw_setcolreg(dinfo, regno, red, green, blue,
transp);
}
break;
#endif
#ifdef FBCON_HAS_CFB16
case 15:
dinfo->con_cmap.cfb16[regno] = ((red & 0xf800) >> 1) |
((green & 0xf800) >> 6) |
((blue & 0xf800) >> 11);
break;
case 16:
dinfo->con_cmap.cfb16[regno] = (red & 0xf800) |
((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11);
break;
#endif
#ifdef FBCON_HAS_CFB32
case 24:
dinfo->con_cmap.cfb32[regno] = ((red & 0xff00) << 8) |
(green & 0xff00) |
((blue & 0xff00) >> 8);
break;
#endif
}
return 0;
}
/* Convert a mode to a var, also making the bpp a supported value. */
static void
mode_to_var(const struct fb_videomode *mode, struct fb_var_screeninfo *var,
u32 bpp)
{
if (!mode || !var)
return;
var->xres = mode->xres;
var->yres = mode->yres;
var->xres_virtual = mode->xres;
var->yres_virtual = mode->yres;
var->xoffset = 0;
var->yoffset = 0;
if (bpp <= 8)
var->bits_per_pixel = 8;
else if (bpp <= 16) {
if (bpp == 16)
var->green.length = 6;
var->bits_per_pixel = 16;
} else if (bpp <= 32)
var->bits_per_pixel = 32;
else {
WRN_MSG("var_to_mode: bad bpp: %d\n", bpp);
var->bits_per_pixel = bpp;
}
var->pixclock = mode->pixclock;
var->left_margin = mode->left_margin;
var->right_margin = mode->right_margin;
var->upper_margin = mode->upper_margin;
var->lower_margin = mode->lower_margin;
var->hsync_len = mode->hsync_len;
var->vsync_len = mode->vsync_len;
var->sync = mode->sync;
var->vmode = mode->vmode;
var->width = -1;
var->height = -1;
}
static int
intelfb_set_mode(struct intelfb_info *dinfo, struct fb_var_screeninfo *var,
struct display *disp, int blank)
{
struct intelfb_hwstate hw;
DBG_MSG("intelfb_set_mode (%dx%d-%d)\n", var->xres, var->yres,
intelfb_var_to_depth(var));
memcpy(&hw, &dinfo->save_state, sizeof(hw));
if (intelfbhw_mode_to_hw(dinfo, &hw, var))
return -EINVAL;
intelfbhw_print_hw_state(dinfo, &hw);
if (intelfbhw_program_mode(dinfo, &hw, blank))
return -EINVAL;
update_dinfo(dinfo, var, disp);
return 0;
}
static void
intelfb_do_install_cmap(int con, struct fb_info *info)
{
struct intelfb_info *dinfo = GET_DINFO(info);
struct display *disp;
if (con != dinfo->currcon)
return;
disp = GET_DISP(info, con);
if (disp->cmap.len)
FB_SET_CMAP(&disp->cmap, 1, intelfb_setcolreg, info);
else {
int size = (disp->var.bits_per_pixel > 8) ? 16 : 256;
FB_SET_CMAP(fb_default_cmap(size), 1, intelfb_setcolreg, info);
}
}
static void
check_vc_mode(struct intelfb_info *dinfo)
{
#if VERBOSE > 1
DBG_MSG("check_vc_mode\n");
#endif
if (dinfo->currcon >= 0) {
if (vt_cons[dinfo->currcon]->vc_mode != dinfo->vc_mode) {
dinfo->vc_mode = vt_cons[dinfo->currcon]->vc_mode;
if (dinfo->vc_mode == KD_GRAPHICS) {
DBG_MSG("vc_mode changed to KD_GRAPHICS\n");
intelfbhw_2d_stop(dinfo);
if (dinfo->cursor.enabled) {
intelfbhw_cursor_hide(dinfo);
dinfo->cursor.enabled = 1;
}
} else {
DBG_MSG("vc_mode changed to KD_TEXT\n");
intelfbhw_2d_start(dinfo);
#if 0
if (dinfo->cursor.enabled)
intelfbhw_cursor_show(dinfo);
#endif
}
}
}
}
static void
fbcon_intelfb_setup(struct display *p)
{
struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
DBG_MSG("fbcon_intelfb_setup: accel: %d bpp: %d\n",
TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
switch (p->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
fbcon_cfb8.setup(p);
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
fbcon_cfb16.setup(p);
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
fbcon_cfb32.setup(p);
break;
#endif
}
}
static void
fbcon_intelfb_bmove(struct display *p, int sy, int sx, int dy, int dx,
int height, int width)
{
struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
#if VERBOSE > 0
DBG_MSG("fbcon_intelfb_bmove: accel: %d, bpp: %d\n",
TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
#endif
if (TEXT_ACCEL(dinfo, &p->var)) {
intelfbhw_do_bitblt(dinfo, fontwidth(p) * sx,
fontheight(p) * sy,
fontwidth(p) * dx, fontheight(p) * dy,
fontwidth(p) * width,
fontheight(p) * height,
dinfo->pitch, p->var.bits_per_pixel);
intelfbhw_do_sync(dinfo);
return;
}
/* Non-accel fallback */
switch (p->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
fbcon_cfb8.bmove(p, sy, sx, dy, dx, height, width);
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
fbcon_cfb16.bmove(p, sy, sx, dy, dx, height, width);
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
fbcon_cfb32.bmove(p, sy, sx, dy, dx, height, width);
break;
#endif
}
}
static void
fbcon_intelfb_clear(struct vc_data *conp, struct display *p, int sy, int sx,
int height, int width)
{
struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
#if VERBOSE > 0
DBG_MSG("fbcon_intelfb_clear: accel: %d, bpp: %d\n",
TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
#endif
if (TEXT_ACCEL(dinfo, &p->var)) {
u32 bg = 0;
switch (p->var.bits_per_pixel) {
case 8:
bg = attr_bgcol_ec(p, conp);
break;
case 16:
bg = ((u16 *)p->dispsw_data)[attr_bgcol_ec(p, conp)];
break;
case 32:
bg = ((u32 *)p->dispsw_data)[attr_bgcol_ec(p, conp)];
break;
}
intelfbhw_do_fillrect(dinfo, fontwidth(p) * sx,
fontheight(p) * sy, fontwidth(p) * width,
fontheight(p) * height, bg, dinfo->pitch,
p->var.bits_per_pixel, PAT_ROP_GXCOPY);
intelfbhw_do_sync(dinfo);
return;
}
/* Non-accel fallback */
switch (p->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
fbcon_cfb8.clear(conp, p, sy, sx, height, width);
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
fbcon_cfb16.clear(conp, p, sy, sx, height, width);
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
fbcon_cfb32.clear(conp, p, sy, sx, height, width);
break;
#endif
}
}
static void
fbcon_intelfb_putc(struct vc_data *conp, struct display *p, int c,
int yy, int xx)
{
struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
#if VERBOSE > 0
DBG_MSG("fbcon_intelfb_putc: accel: %d, bpp: %d\n",
TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
#endif
/* intelfbhw_do_drawglyph() has problems with the 852GM/855GM */
if (TEXT_ACCEL(dinfo, &p->var) && USE_DRAWGLYPH(dinfo)) {
u32 bg = 0, fg = 0;
u8 *cdat;
int fw;
switch (p->var.bits_per_pixel) {
case 8:
bg = attr_bgcol(p, c);
fg = attr_fgcol(p, c);
break;
case 16:
bg = ((u16 *)p->dispsw_data)[attr_bgcol(p, c)];
fg = ((u16 *)p->dispsw_data)[attr_fgcol(p, c)];
break;
case 32:
bg = ((u32 *)p->dispsw_data)[attr_bgcol(p, c)];
fg = ((u32 *)p->dispsw_data)[attr_fgcol(p, c)];
break;
}
fw = ROUND_UP_TO(fontwidth(p), 8) / 8;
cdat = p->fontdata + (c & p->charmask) * fontheight(p) * fw;
if (intelfbhw_do_drawglyph(dinfo, fg, bg, fontwidth(p),
fontheight(p), cdat,
xx * fontwidth(p),
yy * fontheight(p), dinfo->pitch,
p->var.bits_per_pixel)) {
intelfbhw_do_sync(dinfo);
return;
}
}
if (TEXT_ACCEL(dinfo, &p->var))
intelfbhw_do_sync(dinfo);
/* Non-accel fallback */
switch (p->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
fbcon_cfb8.putc(conp, p, c, yy, xx);
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
fbcon_cfb16.putc(conp, p, c, yy, xx);
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
fbcon_cfb32.putc(conp, p, c, yy, xx);
break;
#endif
}
}
static void
fbcon_intelfb_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count, int yy, int xx)
{
struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
#if VERBOSE > 0
DBG_MSG("fbcon_intelfb_putcs: accel: %d, bpp: %d, (%d,%d) %d\n",
TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel,
xx, yy, count);
#endif
if (TEXT_ACCEL(dinfo, &p->var) && USE_DRAWGLYPH(dinfo)) {
u32 bg = 0, fg = 0;
u8 *cdat;
int fw;
u16 c = scr_readw(s);
switch (p->var.bits_per_pixel) {
case 8:
bg = attr_bgcol(p, c);
fg = attr_fgcol(p, c);
break;
case 16:
bg = ((u16 *)p->dispsw_data)[attr_bgcol(p, c)];
fg = ((u16 *)p->dispsw_data)[attr_fgcol(p, c)];
break;
case 32:
bg = ((u32 *)p->dispsw_data)[attr_bgcol(p, c)];
fg = ((u32 *)p->dispsw_data)[attr_fgcol(p, c)];
break;
}
fw = ROUND_UP_TO(fontwidth(p), 8) / 8;
while (count--) {
cdat = p->fontdata + (scr_readw(s++) & p->charmask) *
fontheight(p) * fw;
intelfbhw_do_drawglyph(dinfo, fg, bg, fontwidth(p),
fontheight(p), cdat,
xx * fontwidth(p),
yy * fontheight(p),
dinfo->pitch,
p->var.bits_per_pixel);
xx++;
}
intelfbhw_do_sync(dinfo);
return;
}
if (TEXT_ACCEL(dinfo, &p->var))
intelfbhw_do_sync(dinfo);
/* Non-accel fallback */
switch (p->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
fbcon_cfb8.putcs(conp, p, s, count, yy, xx);
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
fbcon_cfb16.putcs(conp, p, s, count, yy, xx);
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
fbcon_cfb32.putcs(conp, p, s, count, yy, xx);
break;
#endif
}
}
static void
fbcon_intelfb_revc(struct display *p, int xx, int yy)
{
struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
#if VERBOSE > 0
DBG_MSG("fbcon_intelfb_revc: accel: %d, bpp: %d\n",
TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
#endif
if (TEXT_ACCEL(dinfo, &p->var)) {
int bpp = p->var.bits_per_pixel;
u32 xor_mask = bpp == 8 ? 0x0f : 0xffffffff;
intelfbhw_do_fillrect(dinfo, xx * fontwidth(p),
yy * fontheight(p), fontwidth(p),
fontheight(p), xor_mask, dinfo->pitch,
bpp, PAT_ROP_GXXOR);
intelfbhw_do_sync(dinfo);
return;
}
/* Non-accel fallback */
switch (p->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
fbcon_cfb8.revc(p, xx, yy);
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
fbcon_cfb16.revc(p, xx, yy);
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
fbcon_cfb32.revc(p, xx, yy);
break;
#endif
}
}
static void
fbcon_intelfb_clear_margins(struct vc_data *conp, struct display *p,
int bottom_only)
{
struct intelfb_info *dinfo = GET_DINFO(p->fb_info);
#if VERBOSE > 0
DBG_MSG("fbcon_intelfb_clear_margins: accel: %d, bpp: %d\n",
TEXT_ACCEL(dinfo, &p->var), p->var.bits_per_pixel);
#endif
if (TEXT_ACCEL(dinfo, &p->var)) {
u32 cw, ch, rw, bh, rs, bs;
cw = fontwidth(p);
ch = fontheight(p);
rw = p->var.xres % cw;
bh = p->var.yres % ch;
rs = p->var.xres - rw;
bs = p->var.yres - bh;
if (!bottom_only && rw) {
intelfbhw_do_fillrect(dinfo, p->var.xoffset + rs, 0,
rw, p->var.yres_virtual, 0,
dinfo->pitch,
p->var.bits_per_pixel,
PAT_ROP_GXCOPY);
}
if (bh) {
intelfbhw_do_fillrect(dinfo, p->var.xoffset,
p->var.yoffset + bs, rs, bh, 0,
dinfo->pitch,
p->var.bits_per_pixel,
PAT_ROP_GXCOPY);
}
if ((!bottom_only && rw) || bh) {
intelfbhw_do_sync(dinfo);
}
return;
}
/* Non-accel fallback */
switch (p->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
fbcon_cfb8.clear_margins(conp, p, bottom_only);
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
fbcon_cfb16.clear_margins(conp, p, bottom_only);
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
fbcon_cfb32.clear_margins(conp, p, bottom_only);
break;
#endif
}
}
void
intelfb_create_cursor_shape(struct intelfb_info *dinfo, struct display *disp)
{
u32 h, cu, cd;
DBG_MSG("intelfb_create_cursor_shape\n");
h = fontheight(disp);
cd = h;
if (cd >= 10)
cd --;
dinfo->cursor.type = disp->conp->vc_cursor_type & CUR_HWMASK;
switch (dinfo->cursor.type) {
case CUR_NONE:
cu = cd;
break;
case CUR_UNDERLINE:
cu = cd - 2;
break;
case CUR_LOWER_THIRD:
cu = (h * 2) / 3;
break;
case CUR_LOWER_HALF:
cu = h / 2;
break;
case CUR_TWO_THIRDS:
cu = h / 3;
break;
case CUR_BLOCK:
default:
cu = 0;
cd = h;
break;
}
dinfo->cursor.w = fontwidth(disp);
dinfo->cursor.u = cu;
dinfo->cursor.d = cd;
}
static void
intelfb_flashcursor(unsigned long ptr)
{
struct intelfb_info *dinfo = (struct intelfb_info *)ptr;
unsigned long flags;
#if VERBOSE > 2
DBG_MSG("intelfb_flashcursor\n");
#endif
spin_lock_irqsave(&dinfo->DAClock, flags);
if (dinfo->cursor.enabled) {
if (dinfo->cursor.on)
intelfbhw_cursor_hide(dinfo);
else
intelfbhw_cursor_show(dinfo);
dinfo->cursor.enabled = 1;
}
dinfo->cursor.timer.expires = jiffies + HZ / 2;
add_timer(&dinfo->cursor.timer);
spin_unlock_irqrestore(&dinfo->DAClock, flags);
}
static void
fbcon_intelfb_cursor(struct display *disp, int mode, int x, int y)
{
unsigned long flags = 0;
struct intelfb_info *dinfo = GET_DINFO(disp->fb_info);
#if VERBOSE > 0
DBG_MSG("fbcon_intelfb_cursor, mode is %d (%d)\n",
mode, dinfo->cursor.state);
#endif
/*
* This appears to be the first place that we can detect changes
* in vc_mode. We need to know this so that acceleration can be
* enabled or disabled so that it won't interfere with an XFree86
* server.
*/
check_vc_mode(dinfo);
if (!dinfo->hwcursor) {
disp->dispsw->cursor = NULL;
fb_con.con_cursor(disp->conp, mode);
disp->dispsw->cursor = fbcon_intelfb_cursor;
return;
}
if (mode == CM_ERASE) {
if (dinfo->cursor.state != CM_ERASE) {
spin_lock_irqsave(&dinfo->DAClock, flags);
dinfo->cursor.state = CM_ERASE;
intelfbhw_cursor_hide(dinfo);
del_timer(&dinfo->cursor.timer);
spin_unlock_irqrestore(&dinfo->DAClock, flags);
}
return;
}
if ((disp->conp->vc_cursor_type & CUR_HWMASK) != dinfo->cursor.type)
intelfbhw_cursor_load(dinfo, disp);
x *= fontwidth(disp);
y *= fontheight(disp);
y -= disp->var.yoffset;
x -= disp->var.xoffset;
spin_lock_irqsave(&dinfo->DAClock, flags);
if (x != dinfo->cursor.x || y != dinfo->cursor.y ||
dinfo->cursor.redraw) {
#if 1
intelfbhw_cursor_hide(dinfo);
#endif
intelfbhw_cursor_setcolor(dinfo, 0, 0xffffff);
intelfbhw_cursor_setpos(dinfo, x, y);
}
dinfo->cursor.state = CM_DRAW;
mod_timer(&dinfo->cursor.timer, jiffies + HZ / 2);
intelfbhw_cursor_show(dinfo);
spin_unlock_irqrestore(&dinfo->DAClock, flags);
}
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