static int cirrus_kick_out_firmware_fb(struct pci_dev *pdev)
{
struct apertures_struct *ap;
bool primary = false;
ap = alloc_apertures(1);
if (!ap)
return -ENOMEM;
ap->ranges[0].base = pci_resource_start(pdev, 0);
ap->ranges[0].size = pci_resource_len(pdev, 0);
#ifdef CONFIG_X86
primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
#endif
remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
kfree(ap);
return 0;
}
static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
{
struct apertures_struct *ap;
struct pci_dev *pdev = dev_priv->dev->pdev;
bool primary;
int ret;
ap = alloc_apertures(1);
if (!ap)
return -ENOMEM;
ap->ranges[0].base = dev_priv->gtt.mappable_base;
ap->ranges[0].size = dev_priv->gtt.mappable_end;
primary =
pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
ret = remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
kfree(ap);
return ret;
}
/* Get framebuffer memory from Hyper-V video pci space */
static int hvfb_getmem(struct fb_info *info)
{
struct hvfb_par *par = info->par;
struct pci_dev *pdev = NULL;
void __iomem *fb_virt;
int gen2vm = efi_enabled(EFI_BOOT);
int ret;
par->mem.name = KBUILD_MODNAME;
par->mem.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
if (gen2vm) {
ret = allocate_resource(&hyperv_mmio, &par->mem,
screen_fb_size,
0, -1,
screen_fb_size,
NULL, NULL);
if (ret != 0) {
pr_err("Unable to allocate framebuffer memory\n");
return -ENODEV;
}
} else {
pdev = pci_get_device(PCI_VENDOR_ID_MICROSOFT,
PCI_DEVICE_ID_HYPERV_VIDEO, NULL);
if (!pdev) {
pr_err("Unable to find PCI Hyper-V video\n");
return -ENODEV;
}
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
pci_resource_len(pdev, 0) < screen_fb_size)
goto err1;
par->mem.end = pci_resource_end(pdev, 0);
par->mem.start = par->mem.end - screen_fb_size + 1;
ret = request_resource(&pdev->resource[0], &par->mem);
if (ret != 0) {
pr_err("Unable to request framebuffer memory\n");
goto err1;
}
}
fb_virt = ioremap(par->mem.start, screen_fb_size);
if (!fb_virt)
goto err2;
info->apertures = alloc_apertures(1);
if (!info->apertures)
goto err3;
if (gen2vm) {
info->apertures->ranges[0].base = screen_info.lfb_base;
info->apertures->ranges[0].size = screen_info.lfb_size;
remove_conflicting_framebuffers(info->apertures,
KBUILD_MODNAME, false);
} else {
info->apertures->ranges[0].base = pci_resource_start(pdev, 0);
info->apertures->ranges[0].size = pci_resource_len(pdev, 0);
}
info->fix.smem_start = par->mem.start;
info->fix.smem_len = screen_fb_size;
info->screen_base = fb_virt;
info->screen_size = screen_fb_size;
if (!gen2vm)
pci_dev_put(pdev);
return 0;
err3:
iounmap(fb_virt);
err2:
release_resource(&par->mem);
err1:
if (!gen2vm)
pci_dev_put(pdev);
return -ENOMEM;
}
/* Get framebuffer memory from Hyper-V video pci space */
static int hvfb_getmem(struct hv_device *hdev, struct fb_info *info)
{
struct hvfb_par *par = info->par;
struct pci_dev *pdev = NULL;
void __iomem *fb_virt;
int gen2vm = efi_enabled(EFI_BOOT);
resource_size_t pot_start, pot_end;
int ret;
if (gen2vm) {
pot_start = 0;
pot_end = -1;
} else {
pdev = pci_get_device(PCI_VENDOR_ID_MICROSOFT,
PCI_DEVICE_ID_HYPERV_VIDEO, NULL);
if (!pdev) {
pr_err("Unable to find PCI Hyper-V video\n");
return -ENODEV;
}
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
pci_resource_len(pdev, 0) < screen_fb_size)
goto err1;
pot_end = pci_resource_end(pdev, 0);
pot_start = pot_end - screen_fb_size + 1;
}
ret = vmbus_allocate_mmio(&par->mem, hdev, pot_start, pot_end,
screen_fb_size, 0x100000, true);
if (ret != 0) {
pr_err("Unable to allocate framebuffer memory\n");
goto err1;
}
fb_virt = ioremap(par->mem->start, screen_fb_size);
if (!fb_virt)
goto err2;
info->apertures = alloc_apertures(1);
if (!info->apertures)
goto err3;
if (gen2vm) {
info->apertures->ranges[0].base = screen_info.lfb_base;
info->apertures->ranges[0].size = screen_info.lfb_size;
remove_conflicting_framebuffers(info->apertures,
KBUILD_MODNAME, false);
} else {
info->apertures->ranges[0].base = pci_resource_start(pdev, 0);
info->apertures->ranges[0].size = pci_resource_len(pdev, 0);
}
info->fix.smem_start = par->mem->start;
info->fix.smem_len = screen_fb_size;
info->screen_base = fb_virt;
info->screen_size = screen_fb_size;
if (!gen2vm)
pci_dev_put(pdev);
return 0;
err3:
iounmap(fb_virt);
err2:
vmbus_free_mmio(par->mem->start, screen_fb_size);
par->mem = NULL;
err1:
if (!gen2vm)
pci_dev_put(pdev);
return -ENOMEM;
}
