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Implement short circuit for base change only 

Allow mode to be set with fb_id set to -1, meaning set
the mode with the current fb (if we have one bound).

Allow intelfb to hook back up it's fb if modesetting
clears it (maybe temporary).

Move any crtc->fb related register changes to set_base
in intel_fb.

General intelfb cleanups.
main
Alan Hourihane 2008-02-22 11:46:22 +00:00
parent b92e343dc4
commit 2476cb209e
5 changed files with 105 additions and 107 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
linux-core/drmP.h
View File

@ -173,8 +173,6 @@ struct drm_file;
#include "drm_compat.h"
#include "drm_crtc.h"
/***********************************************************************/
/** \name Macros to make printk easier */
/*@{*/
@ -610,6 +608,7 @@ struct drm_ati_pcigart_info {
};
#include "drm_objects.h"
#include "drm_crtc.h"
/* per-master structure */
struct drm_master {

33
linux-core/drm_crtc.c
View File

@ -418,7 +418,6 @@ bool drm_crtc_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode, saved_mode;
int saved_x, saved_y;
bool didLock = false;
bool ret = false;
struct drm_output *output;
adjusted_mode = drm_mode_duplicate(dev, mode);
@ -442,7 +441,12 @@ bool drm_crtc_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
crtc->x = x;
crtc->y = y;
/* XXX short-circuit changes to base location only */
if (drm_mode_equal(&saved_mode, &crtc->mode)) {
if (saved_x != crtc->x || saved_y != crtc->y) {
crtc->funcs->mode_set_base(crtc, crtc->x, crtc->y);
goto done;
}
}
/* Pass our mode to the outputs and the CRTC to give them a chance to
* adjust it according to limitations or output properties, and also
@ -507,22 +511,15 @@ bool drm_crtc_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
/* XXX free adjustedmode */
drm_mode_destroy(dev, adjusted_mode);
ret = TRUE;
/* TODO */
// if (scrn->pScreen)
// drm_crtc_set_screen_sub_pixel_order(dev);
done:
if (!ret) {
crtc->x = saved_x;
crtc->y = saved_y;
crtc->mode = saved_mode;
}
if (didLock)
crtc->funcs->unlock (crtc);
return ret;
return true;
}
EXPORT_SYMBOL(drm_crtc_set_mode);
@ -1599,13 +1596,13 @@ int drm_mode_setcrtc(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_crtc *crtc_req = data;
struct drm_crtc *crtc;
struct drm_crtc *crtc, *crtcfb;
struct drm_output **output_set = NULL, *output;
struct drm_framebuffer *fb = NULL;
struct drm_display_mode *mode = NULL;
uint32_t __user *set_outputs_ptr;
int ret = 0;
int i;
uint32_t __user *set_outputs_ptr;
mutex_lock(&dev->mode_config.mutex);
crtc = idr_find(&dev->mode_config.crtc_idr, crtc_req->crtc_id);
@ -1616,8 +1613,16 @@ int drm_mode_setcrtc(struct drm_device *dev,
}
if (crtc_req->mode_valid) {
/* if we have a mode we need a framebuffer */
if (crtc_req->fb_id) {
/* If we have a mode we need a framebuffer. */
/* If we pass -1, set the mode with the currently bound fb */
if (crtc_req->fb_id == -1) {
list_for_each_entry(crtcfb, &dev->mode_config.crtc_list, head) {
if (crtcfb == crtc) {
DRM_INFO("Using current fb for setmode\n");
fb = crtc->fb;
}
}
} else {
fb = idr_find(&dev->mode_config.crtc_idr, crtc_req->fb_id);
if (!fb || (fb->id != crtc_req->fb_id)) {
DRM_DEBUG("Unknown FB ID%d\n", crtc_req->fb_id);

2
linux-core/drm_crtc.h
View File

@ -244,7 +244,7 @@ struct drm_framebuffer {
struct drm_buffer_object *bo;
void *fbdev;
u32 pseudo_palette[17];
void *virtual_base;
struct drm_bo_kmap_obj kmap;
struct list_head filp_head;
};

54
linux-core/intel_display.c
View File

@ -369,10 +369,42 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y)
unsigned long Start, Offset;
int dspbase = (pipe == 0 ? DSPABASE : DSPBBASE);
int dspsurf = (pipe == 0 ? DSPASURF : DSPBSURF);
int dspstride = (pipe == 0) ? DSPASTRIDE : DSPBSTRIDE;
int dspcntr_reg = (pipe == 0) ? DSPACNTR : DSPBCNTR;
u32 dspcntr;
/* no fb bound */
if (!crtc->fb) {
DRM_INFO("No FB bound\n");
return;
}
Start = crtc->fb->bo->offset;
Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8);
I915_WRITE(dspstride, crtc->fb->pitch);
dspcntr = I915_READ(dspcntr_reg);
switch (crtc->fb->bits_per_pixel) {
case 8:
dspcntr |= DISPPLANE_8BPP;
break;
case 16:
if (crtc->fb->depth == 15)
dspcntr |= DISPPLANE_15_16BPP;
else
dspcntr |= DISPPLANE_16BPP;
break;
case 24:
case 32:
dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
break;
default:
DRM_ERROR("Unknown color depth\n");
return;
}
I915_WRITE(dspcntr_reg, dspcntr);
DRM_DEBUG("Writing base %08lX %08lX %d %d\n", Start, Offset, x, y);
if (IS_I965G(dev)) {
I915_WRITE(dspbase, Offset);
@ -691,7 +723,6 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
int vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
int vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
int dspsize_reg = (pipe == 0) ? DSPASIZE : DSPBSIZE;
int dspstride_reg = (pipe == 0) ? DSPASTRIDE : DSPBSTRIDE;
int dsppos_reg = (pipe == 0) ? DSPAPOS : DSPBPOS;
int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
int refclk;
@ -804,26 +835,6 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
/* Set up the display plane register */
dspcntr = DISPPLANE_GAMMA_ENABLE;
switch (crtc->fb->bits_per_pixel) {
case 8:
dspcntr |= DISPPLANE_8BPP;
break;
case 16:
if (crtc->fb->depth == 15)
dspcntr |= DISPPLANE_15_16BPP;
else
dspcntr |= DISPPLANE_16BPP;
break;
case 24:
case 32:
dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
break;
default:
DRM_ERROR("Unknown color depth\n");
return;
}
if (pipe == 0)
dspcntr |= DISPPLANE_SEL_PIPE_A;
else
@ -925,7 +936,6 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
((adjusted_mode->crtc_vblank_end - 1) << 16));
I915_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) |
((adjusted_mode->crtc_vsync_end - 1) << 16));
I915_WRITE(dspstride_reg, crtc->fb->pitch);
/* pipesrc and dspsize control the size that is scaled from, which should
* always be the user's requested size.
*/

104
linux-core/intel_fb.c
View File

@ -48,6 +48,7 @@ struct intelfb_par {
struct drm_device *dev;
struct drm_crtc *crtc;
struct drm_display_mode *fb_mode;
struct drm_framebuffer *fb;
};
/*
static int
@ -66,7 +67,7 @@ static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
struct fb_info *info)
{
struct intelfb_par *par = info->par;
struct drm_framebuffer *fb = par->crtc->fb;
struct drm_framebuffer *fb = par->fb;
struct drm_crtc *crtc = par->crtc;
if (regno > 255)
@ -107,7 +108,7 @@ static int intelfb_check_var(struct fb_var_screeninfo *var,
{
struct intelfb_par *par = info->par;
/*struct drm_device *dev = par->dev;*/
struct drm_framebuffer *fb = par->crtc->fb;
struct drm_framebuffer *fb = par->fb;
/*struct drm_output *output;*/
int depth/*, found = 0*/;
@ -216,41 +217,15 @@ static int intelfb_check_var(struct fb_var_screeninfo *var,
return 0;
}
bool i915_drmfb_mode_equal(struct drm_display_mode *mode1, struct drm_display_mode *mode2, unsigned int pixclock)
{
if (mode1->hdisplay == mode2->hdisplay &&
mode1->hsync_start == mode2->hsync_start &&
mode1->hsync_end == mode2->hsync_end &&
mode1->htotal == mode2->htotal &&
mode1->hskew == mode2->hskew &&
mode1->vdisplay == mode2->vdisplay &&
mode1->vsync_start == mode2->vsync_start &&
mode1->vsync_end == mode2->vsync_end &&
mode1->vtotal == mode2->vtotal &&
mode1->vscan == mode2->vscan &&
mode1->flags == mode2->flags)
{
if (mode1->clock == mode2->clock)
return true;
if (KHZ2PICOS(mode2->clock) == pixclock)
return true;
return false;
}
return false;
}
/* this will let fbcon do the mode init */
/* FIXME: take mode config lock? */
static int intelfb_set_par(struct fb_info *info)
{
struct intelfb_par *par = info->par;
struct drm_framebuffer *fb = par->crtc->fb;
struct drm_framebuffer *fb = par->fb;
struct drm_device *dev = par->dev;
struct drm_display_mode *drm_mode, *search_mode;
struct drm_output *output;
struct drm_output *output = NULL;
struct fb_var_screeninfo *var = &info->var;
int found = 0;
@ -295,15 +270,23 @@ static int intelfb_set_par(struct fb_info *info)
drm_mode_set_name(drm_mode);
drm_mode_set_crtcinfo(drm_mode, CRTC_INTERLACE_HALVE_V);
found = 0;
list_for_each_entry(output, &dev->mode_config.output_list, head) {
if (output->crtc == par->crtc)
if (output->crtc == par->crtc){
found = 1;
break;
}
}
/* no output bound, bail */
if (!found)
return -EINVAL;
found = 0;
drm_mode_debug_printmodeline(dev, drm_mode);
list_for_each_entry(search_mode, &output->modes, head) {
drm_mode_debug_printmodeline(dev, search_mode);
if (i915_drmfb_mode_equal(drm_mode, search_mode, var->pixclock)) {
if (drm_mode_equal(drm_mode, search_mode)) {
drm_mode_destroy(dev, drm_mode);
drm_mode = search_mode;
found = 1;
@ -311,8 +294,12 @@ static int intelfb_set_par(struct fb_info *info)
}
}
/* If we didn't find a matching mode that exists on our output,
* create a new attachment for the incoming user specified mode
*/
if (!found) {
if (par->fb_mode) {
/* this also destroys the mode */
drm_mode_detachmode_crtc(dev, par->fb_mode);
}
@ -322,21 +309,13 @@ static int intelfb_set_par(struct fb_info *info)
drm_mode_attachmode_crtc(dev, par->crtc, par->fb_mode);
}
if (par->crtc->enabled) {
if (!drm_mode_equal(&par->crtc->mode, drm_mode)) {
/* re-attach fb */
if (!par->crtc->fb)
par->crtc->fb = par->fb;
if (!drm_crtc_set_mode(par->crtc, drm_mode, var->xoffset, var->yoffset))
return -EINVAL;
} else if (par->crtc->x != var->xoffset || par->crtc->y != var->yoffset) {
if (!par->crtc->funcs->mode_set_base) {
if (!drm_crtc_set_mode(par->crtc, drm_mode, var->xoffset, var->yoffset))
return -EINVAL;
} else {
par->crtc->funcs->mode_set_base(par->crtc, var->xoffset, var->yoffset);
par->crtc->x = var->xoffset;
par->crtc->y = var->yoffset;
}
}
}
return 0;
}
@ -493,17 +472,14 @@ static int intelfb_pan_display(struct fb_var_screeninfo *var,
DRM_DEBUG("\n");
if (!crtc->funcs->mode_set_base) {
DRM_ERROR("panning not supported\n");
return -EFAULT;
}
/* TODO add check size and pos*/
crtc->funcs->mode_set_base(crtc, var->xoffset, var->yoffset);
/* re-attach fb */
if (!crtc->fb)
crtc->fb = par->fb;
drm_crtc_set_mode(crtc, &crtc->mode, var->xoffset, var->yoffset);
par->crtc->x = var->xoffset;
par->crtc->y = var->yoffset;
info->var.xoffset = var->xoffset;
info->var.yoffset = var->yoffset;
@ -596,7 +572,7 @@ int intelfb_probe(struct drm_device *dev, struct drm_crtc *crtc)
fb->bits_per_pixel = 32;
fb->pitch = fb->width * ((fb->bits_per_pixel + 1) / 8);
fb->depth = 24;
ret = drm_buffer_object_create(dev, fb->width * fb->height * 4,
ret = drm_buffer_object_create(dev, fb->pitch * fb->height * 4,
drm_bo_type_kernel,
DRM_BO_FLAG_READ |
DRM_BO_FLAG_WRITE |
@ -623,6 +599,7 @@ int intelfb_probe(struct drm_device *dev, struct drm_crtc *crtc)
par->dev = dev;
par->crtc = crtc;
par->fb = fb;
info->fbops = &intelfb_ops;
@ -635,19 +612,26 @@ int intelfb_probe(struct drm_device *dev, struct drm_crtc *crtc)
info->fix.ywrapstep = 0;
info->fix.accel = FB_ACCEL_I830;
info->fix.type_aux = 0;
info->fix.mmio_start = 0;
info->fix.mmio_len = 0;
if (IS_I9XX(dev)) {
info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
} else {
info->fix.mmio_start = pci_resource_start(dev->pdev, 1);
info->fix.mmio_len = pci_resource_len(dev->pdev, 1);
}
info->fix.line_length = fb->pitch;
info->fix.smem_start = fb->bo->offset + dev->mode_config.fb_base;
info->fix.smem_len = info->fix.line_length * fb->height;
info->flags = FBINFO_DEFAULT;
ret = drm_mem_reg_ioremap(dev, &fb->bo->mem, &fb->virtual_base);
ret = drm_bo_kmap(fb->bo, 0, fb->bo->num_pages, &fb->kmap);
if (ret)
DRM_ERROR("error mapping fb: %d\n", ret);
info->screen_base = fb->virtual_base;
info->screen_base = fb->kmap.virtual;
info->screen_size = info->fix.smem_len; /* FIXME */
info->pseudo_palette = fb->pseudo_palette;
info->var.xres_virtual = fb->width;
@ -757,10 +741,10 @@ int intelfb_remove(struct drm_device *dev, struct drm_crtc *crtc)
if (info) {
unregister_framebuffer(info);
framebuffer_release(info);
drm_mem_reg_iounmap(dev, &fb->bo->mem, fb->virtual_base);
drm_bo_kunmap(&fb->kmap);
drm_bo_usage_deref_unlocked(&fb->bo);
drm_framebuffer_destroy(fb);
framebuffer_release(info);
}
return 0;
}