提交 1471ca9a 编写于 作者: M Marcin Slusarz 提交者: Dave Airlie

fbdev: allow passing more than one aperture for handoff

It removes a hack from nouveau code which had to detect which
region to pass to kick vesafb/efifb.
Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Peter Jones <pjones@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>
上级 3da1f33e
......@@ -128,11 +128,16 @@ static int intelfb_create(struct intel_fbdev *ifbdev,
info->fbops = &intelfb_ops;
/* setup aperture base/size for vesafb takeover */
info->aperture_base = dev->mode_config.fb_base;
info->apertures = alloc_apertures(1);
if (!info->apertures) {
ret = -ENOMEM;
goto out_unpin;
}
info->apertures->ranges[0].base = dev->mode_config.fb_base;
if (IS_I9XX(dev))
info->aperture_size = pci_resource_len(dev->pdev, 2);
info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 2);
else
info->aperture_size = pci_resource_len(dev->pdev, 0);
info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset;
info->fix.smem_len = size;
......
......@@ -152,44 +152,6 @@ static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
*blue = nv_crtc->lut.b[regno];
}
#if defined(__i386__) || defined(__x86_64__)
static bool
nouveau_fbcon_has_vesafb_or_efifb(struct drm_device *dev)
{
struct pci_dev *pdev = dev->pdev;
int ramin;
if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB &&
screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
return false;
if (screen_info.lfb_base < pci_resource_start(pdev, 1))
goto not_fb;
if (screen_info.lfb_base + screen_info.lfb_size >=
pci_resource_start(pdev, 1) + pci_resource_len(pdev, 1))
goto not_fb;
return true;
not_fb:
ramin = 2;
if (pci_resource_len(pdev, ramin) == 0) {
ramin = 3;
if (pci_resource_len(pdev, ramin) == 0)
return false;
}
if (screen_info.lfb_base < pci_resource_start(pdev, ramin))
return false;
if (screen_info.lfb_base + screen_info.lfb_size >=
pci_resource_start(pdev, ramin) + pci_resource_len(pdev, ramin))
return false;
return true;
}
#endif
static void
nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
{
......@@ -219,7 +181,9 @@ nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
struct nouveau_framebuffer *nouveau_fb;
struct nouveau_bo *nvbo;
struct drm_mode_fb_cmd mode_cmd;
struct device *device = &dev->pdev->dev;
struct pci_dev *pdev = dev->pdev;
struct device *device = &pdev->dev;
struct apertures_struct *aper;
int size, ret;
mode_cmd.width = sizes->surface_width;
......@@ -299,28 +263,30 @@ nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
/* FIXME: we really shouldn't expose mmio space at all */
info->fix.mmio_start = pci_resource_start(dev->pdev, 1);
info->fix.mmio_len = pci_resource_len(dev->pdev, 1);
info->fix.mmio_start = pci_resource_start(pdev, 1);
info->fix.mmio_len = pci_resource_len(pdev, 1);
/* Set aperture base/size for vesafb takeover */
#if defined(__i386__) || defined(__x86_64__)
if (nouveau_fbcon_has_vesafb_or_efifb(dev)) {
/* Some NVIDIA VBIOS' are stupid and decide to put the
* framebuffer in the middle of the PRAMIN BAR for
* whatever reason. We need to know the exact lfb_base
* to get vesafb kicked off, and the only reliable way
* we have left is to find out lfb_base the same way
* vesafb did.
*/
info->aperture_base = screen_info.lfb_base;
info->aperture_size = screen_info.lfb_size;
if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
info->aperture_size *= 65536;
} else
#endif
{
info->aperture_base = info->fix.mmio_start;
info->aperture_size = info->fix.mmio_len;
aper = info->apertures = alloc_apertures(3);
if (!info->apertures) {
ret = -ENOMEM;
goto out_unref;
}
aper->ranges[0].base = pci_resource_start(pdev, 1);
aper->ranges[0].size = pci_resource_len(pdev, 1);
aper->count = 1;
if (pci_resource_len(pdev, 2)) {
aper->ranges[aper->count].base = pci_resource_start(pdev, 2);
aper->ranges[aper->count].size = pci_resource_len(pdev, 2);
aper->count++;
}
if (pci_resource_len(pdev, 3)) {
aper->ranges[aper->count].base = pci_resource_start(pdev, 3);
aper->ranges[aper->count].size = pci_resource_len(pdev, 3);
aper->count++;
}
info->pixmap.size = 64*1024;
......
......@@ -236,8 +236,13 @@ static int radeonfb_create(struct radeon_fbdev *rfbdev,
drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height);
/* setup aperture base/size for vesafb takeover */
info->aperture_base = rdev->ddev->mode_config.fb_base;
info->aperture_size = rdev->mc.real_vram_size;
info->apertures = alloc_apertures(1);
if (!info->apertures) {
ret = -ENOMEM;
goto out_unref;
}
info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base;
info->apertures->ranges[0].size = rdev->mc.real_vram_size;
info->fix.mmio_start = 0;
info->fix.mmio_len = 0;
......
......@@ -559,8 +559,13 @@ int vmw_fb_init(struct vmw_private *vmw_priv)
info->pixmap.scan_align = 1;
#endif
info->aperture_base = vmw_priv->vram_start;
info->aperture_size = vmw_priv->vram_size;
info->apertures = alloc_apertures(1);
if (!info->apertures) {
ret = -ENOMEM;
goto err_aper;
}
info->apertures->ranges[0].base = vmw_priv->vram_start;
info->apertures->ranges[0].size = vmw_priv->vram_size;
/*
* Dirty & Deferred IO
......@@ -580,6 +585,7 @@ int vmw_fb_init(struct vmw_private *vmw_priv)
err_defio:
fb_deferred_io_cleanup(info);
err_aper:
ttm_bo_kunmap(&par->map);
err_unref:
ttm_bo_unref((struct ttm_buffer_object **)&par->vmw_bo);
......
......@@ -165,7 +165,7 @@ static void efifb_destroy(struct fb_info *info)
{
if (info->screen_base)
iounmap(info->screen_base);
release_mem_region(info->aperture_base, info->aperture_size);
release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size);
framebuffer_release(info);
}
......@@ -289,8 +289,13 @@ static int __devinit efifb_probe(struct platform_device *dev)
info->pseudo_palette = info->par;
info->par = NULL;
info->aperture_base = efifb_fix.smem_start;
info->aperture_size = size_remap;
info->apertures = alloc_apertures(1);
if (!info->apertures) {
err = -ENOMEM;
goto err_release_fb;
}
info->apertures->ranges[0].base = efifb_fix.smem_start;
info->apertures->ranges[0].size = size_remap;
info->screen_base = ioremap(efifb_fix.smem_start, efifb_fix.smem_len);
if (!info->screen_base) {
......
......@@ -1468,16 +1468,39 @@ static int fb_check_foreignness(struct fb_info *fi)
return 0;
}
static bool fb_do_apertures_overlap(struct fb_info *gen, struct fb_info *hw)
static bool apertures_overlap(struct aperture *gen, struct aperture *hw)
{
/* is the generic aperture base the same as the HW one */
if (gen->aperture_base == hw->aperture_base)
if (gen->base == hw->base)
return true;
/* is the generic aperture base inside the hw base->hw base+size */
if (gen->aperture_base > hw->aperture_base && gen->aperture_base <= hw->aperture_base + hw->aperture_size)
if (gen->base > hw->base && gen->base <= hw->base + hw->size)
return true;
return false;
}
static bool fb_do_apertures_overlap(struct fb_info *gen, struct fb_info *hw)
{
int i, j;
struct apertures_struct *hwa = hw->apertures;
struct apertures_struct *gena = gen->apertures;
if (!hwa || !gena)
return false;
for (i = 0; i < hwa->count; ++i) {
struct aperture *h = &hwa->ranges[i];
for (j = 0; j < gena->count; ++j) {
struct aperture *g = &gena->ranges[j];
printk(KERN_DEBUG "checking generic (%llx %llx) vs hw (%llx %llx)\n",
g->base, g->size, h->base, h->size);
if (apertures_overlap(g, h))
return true;
}
}
return false;
}
/**
* register_framebuffer - registers a frame buffer device
* @fb_info: frame buffer info structure
......
......@@ -80,6 +80,7 @@ EXPORT_SYMBOL(framebuffer_alloc);
*/
void framebuffer_release(struct fb_info *info)
{
kfree(info->apertures);
kfree(info);
}
EXPORT_SYMBOL(framebuffer_release);
......
......@@ -285,7 +285,7 @@ static void offb_destroy(struct fb_info *info)
{
if (info->screen_base)
iounmap(info->screen_base);
release_mem_region(info->aperture_base, info->aperture_size);
release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size);
framebuffer_release(info);
}
......@@ -491,8 +491,11 @@ static void __init offb_init_fb(const char *name, const char *full_name,
var->vmode = FB_VMODE_NONINTERLACED;
/* set offb aperture size for generic probing */
info->aperture_base = address;
info->aperture_size = fix->smem_len;
info->apertures = alloc_apertures(1);
if (!info->apertures)
goto out_aper;
info->apertures->ranges[0].base = address;
info->apertures->ranges[0].size = fix->smem_len;
info->fbops = &offb_ops;
info->screen_base = ioremap(address, fix->smem_len);
......@@ -501,17 +504,20 @@ static void __init offb_init_fb(const char *name, const char *full_name,
fb_alloc_cmap(&info->cmap, 256, 0);
if (register_framebuffer(info) < 0) {
iounmap(par->cmap_adr);
par->cmap_adr = NULL;
iounmap(info->screen_base);
framebuffer_release(info);
release_mem_region(res_start, res_size);
return;
}
if (register_framebuffer(info) < 0)
goto out_err;
printk(KERN_INFO "fb%d: Open Firmware frame buffer device on %s\n",
info->node, full_name);
return;
out_err:
iounmap(info->screen_base);
out_aper:
iounmap(par->cmap_adr);
par->cmap_adr = NULL;
framebuffer_release(info);
release_mem_region(res_start, res_size);
}
......
......@@ -177,7 +177,7 @@ static void vesafb_destroy(struct fb_info *info)
{
if (info->screen_base)
iounmap(info->screen_base);
release_mem_region(info->aperture_base, info->aperture_size);
release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size);
framebuffer_release(info);
}
......@@ -295,8 +295,13 @@ static int __init vesafb_probe(struct platform_device *dev)
info->par = NULL;
/* set vesafb aperture size for generic probing */
info->aperture_base = screen_info.lfb_base;
info->aperture_size = size_total;
info->apertures = alloc_apertures(1);
if (!info->apertures) {
err = -ENOMEM;
goto err;
}
info->apertures->ranges[0].base = screen_info.lfb_base;
info->apertures->ranges[0].size = size_total;
info->screen_base = ioremap(vesafb_fix.smem_start, vesafb_fix.smem_len);
if (!info->screen_base) {
......
......@@ -403,6 +403,7 @@ struct fb_cursor {
#include <linux/notifier.h>
#include <linux/list.h>
#include <linux/backlight.h>
#include <linux/slab.h>
#include <asm/io.h>
struct vm_area_struct;
......@@ -862,10 +863,22 @@ struct fb_info {
/* we need the PCI or similiar aperture base/size not
smem_start/size as smem_start may just be an object
allocated inside the aperture so may not actually overlap */
resource_size_t aperture_base;
resource_size_t aperture_size;
struct apertures_struct {
unsigned int count;
struct aperture {
resource_size_t base;
resource_size_t size;
} ranges[0];
} *apertures;
};
static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
+ max_num * sizeof(struct aperture), GFP_KERNEL);
a->count = max_num;
return a;
}
#ifdef MODULE
#define FBINFO_DEFAULT FBINFO_MODULE
#else
......
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