mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-20 02:34:23 +08:00
131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
#include <linux/vgaarb.h>
|
|
#include <linux/vga_switcheroo.h>
|
|
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
|
|
#include "nouveau_drv.h"
|
|
#include "nouveau_acpi.h"
|
|
#include "nouveau_fbcon.h"
|
|
#include "nouveau_vga.h"
|
|
|
|
static unsigned int
|
|
nouveau_vga_set_decode(void *priv, bool state)
|
|
{
|
|
struct nouveau_drm *drm = nouveau_drm(priv);
|
|
struct nvif_object *device = &drm->client.device.object;
|
|
|
|
if (drm->client.device.info.family == NV_DEVICE_INFO_V0_CURIE &&
|
|
drm->client.device.info.chipset >= 0x4c)
|
|
nvif_wr32(device, 0x088060, state);
|
|
else
|
|
if (drm->client.device.info.chipset >= 0x40)
|
|
nvif_wr32(device, 0x088054, state);
|
|
else
|
|
nvif_wr32(device, 0x001854, state);
|
|
|
|
if (state)
|
|
return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
|
|
VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
|
|
else
|
|
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
|
|
}
|
|
|
|
static void
|
|
nouveau_switcheroo_set_state(struct pci_dev *pdev,
|
|
enum vga_switcheroo_state state)
|
|
{
|
|
struct drm_device *dev = pci_get_drvdata(pdev);
|
|
|
|
if ((nouveau_is_optimus() || nouveau_is_v1_dsm()) && state == VGA_SWITCHEROO_OFF)
|
|
return;
|
|
|
|
if (state == VGA_SWITCHEROO_ON) {
|
|
printk(KERN_ERR "VGA switcheroo: switched nouveau on\n");
|
|
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
|
|
nouveau_pmops_resume(&pdev->dev);
|
|
drm_kms_helper_poll_enable(dev);
|
|
dev->switch_power_state = DRM_SWITCH_POWER_ON;
|
|
} else {
|
|
printk(KERN_ERR "VGA switcheroo: switched nouveau off\n");
|
|
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
|
|
drm_kms_helper_poll_disable(dev);
|
|
nouveau_switcheroo_optimus_dsm();
|
|
nouveau_pmops_suspend(&pdev->dev);
|
|
dev->switch_power_state = DRM_SWITCH_POWER_OFF;
|
|
}
|
|
}
|
|
|
|
static void
|
|
nouveau_switcheroo_reprobe(struct pci_dev *pdev)
|
|
{
|
|
struct drm_device *dev = pci_get_drvdata(pdev);
|
|
nouveau_fbcon_output_poll_changed(dev);
|
|
}
|
|
|
|
static bool
|
|
nouveau_switcheroo_can_switch(struct pci_dev *pdev)
|
|
{
|
|
struct drm_device *dev = pci_get_drvdata(pdev);
|
|
|
|
/*
|
|
* FIXME: open_count is protected by drm_global_mutex but that would lead to
|
|
* locking inversion with the driver load path. And the access here is
|
|
* completely racy anyway. So don't bother with locking for now.
|
|
*/
|
|
return dev->open_count == 0;
|
|
}
|
|
|
|
static const struct vga_switcheroo_client_ops
|
|
nouveau_switcheroo_ops = {
|
|
.set_gpu_state = nouveau_switcheroo_set_state,
|
|
.reprobe = nouveau_switcheroo_reprobe,
|
|
.can_switch = nouveau_switcheroo_can_switch,
|
|
};
|
|
|
|
void
|
|
nouveau_vga_init(struct nouveau_drm *drm)
|
|
{
|
|
struct drm_device *dev = drm->dev;
|
|
bool runtime = false;
|
|
|
|
/* only relevant for PCI devices */
|
|
if (!dev->pdev)
|
|
return;
|
|
|
|
vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
|
|
|
|
if (nouveau_runtime_pm == 1)
|
|
runtime = true;
|
|
if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_is_v1_dsm()))
|
|
runtime = true;
|
|
vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops, runtime);
|
|
|
|
if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus())
|
|
vga_switcheroo_init_domain_pm_ops(drm->dev->dev, &drm->vga_pm_domain);
|
|
}
|
|
|
|
void
|
|
nouveau_vga_fini(struct nouveau_drm *drm)
|
|
{
|
|
struct drm_device *dev = drm->dev;
|
|
bool runtime = false;
|
|
|
|
if (nouveau_runtime_pm == 1)
|
|
runtime = true;
|
|
if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_is_v1_dsm()))
|
|
runtime = true;
|
|
|
|
vga_switcheroo_unregister_client(dev->pdev);
|
|
if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus())
|
|
vga_switcheroo_fini_domain_pm_ops(drm->dev->dev);
|
|
vga_client_register(dev->pdev, NULL, NULL, NULL);
|
|
}
|
|
|
|
|
|
void
|
|
nouveau_vga_lastclose(struct drm_device *dev)
|
|
{
|
|
vga_switcheroo_process_delayed_switch();
|
|
}
|