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f5a8020903
linux_dsm_epyc7002/drivers/gpu/drm/radeon/radeon_kms.c
Mario Kleiner f5a8020903 drm/kms/radeon: Add support for precise vblank timestamping. 
This patch adds new functions for use by the drm core:

.get_vblank_timestamp() provides a precise timestamp
for the end of the most recent (or current) vblank
interval of a given crtc, as needed for the DRI2
implementation of the OML_sync_control extension.

It is a thin wrapper around the drm function
drm_calc_vbltimestamp_from_scanoutpos() which does
almost all the work and is shared across drivers.

.get_scanout_position() provides the current horizontal
and vertical video scanout position and "in vblank"
status of a given crtc, as needed by the drm for use by
drm_calc_vbltimestamp_from_scanoutpos().

The function is also used by the dynamic gpu reclocking
code to determine when it is safe to reclock inside vblank.

For that purpose radeon_pm_in_vbl() is modified to
accomodate a small change in the function prototype of
the radeon_get_crtc_scanoutpos() which is hooked up to
.get_scanout_position().

This code has been tested on AVIVO hardware, a RV530
(ATI Mobility Radeon X1600) in a Intel Core-2 Duo MacBookPro
and some R600 variant (FireGL V7600) in a single cpu
AMD Athlon 64 PC.

Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-22 11:48:26 +10:00

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/*
* Copyright 2008 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
* Copyright 2009 Jerome Glisse.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Dave Airlie
* Alex Deucher
* Jerome Glisse
*/
#include "drmP.h"
#include "drm_sarea.h"
#include "radeon.h"
#include "radeon_drm.h"
#include <linux/vga_switcheroo.h>
#include <linux/slab.h>
int radeon_driver_unload_kms(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
if (rdev == NULL)
return 0;
radeon_modeset_fini(rdev);
radeon_device_fini(rdev);
kfree(rdev);
dev->dev_private = NULL;
return 0;
}
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
{
struct radeon_device *rdev;
int r, acpi_status;
rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
if (rdev == NULL) {
return -ENOMEM;
}
dev->dev_private = (void *)rdev;
/* update BUS flag */
if (drm_device_is_agp(dev)) {
flags |= RADEON_IS_AGP;
} else if (drm_device_is_pcie(dev)) {
flags |= RADEON_IS_PCIE;
} else {
flags |= RADEON_IS_PCI;
}
/* radeon_device_init should report only fatal error
* like memory allocation failure or iomapping failure,
* or memory manager initialization failure, it must
* properly initialize the GPU MC controller and permit
* VRAM allocation
*/
r = radeon_device_init(rdev, dev, dev->pdev, flags);
if (r) {
dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
goto out;
}
/* Call ACPI methods */
acpi_status = radeon_acpi_init(rdev);
if (acpi_status)
dev_dbg(&dev->pdev->dev, "Error during ACPI methods call\n");
/* Again modeset_init should fail only on fatal error
* otherwise it should provide enough functionalities
* for shadowfb to run
*/
r = radeon_modeset_init(rdev);
if (r)
dev_err(&dev->pdev->dev, "Fatal error during modeset init\n");
out:
if (r)
radeon_driver_unload_kms(dev);
return r;
}
/*
* Userspace get informations ioctl
*/
int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
{
struct radeon_device *rdev = dev->dev_private;
struct drm_radeon_info *info;
struct radeon_mode_info *minfo = &rdev->mode_info;
uint32_t *value_ptr;
uint32_t value;
struct drm_crtc *crtc;
int i, found;
info = data;
value_ptr = (uint32_t *)((unsigned long)info->value);
if (DRM_COPY_FROM_USER(&value, value_ptr, sizeof(value)))
return -EFAULT;
switch (info->request) {
case RADEON_INFO_DEVICE_ID:
value = dev->pci_device;
break;
case RADEON_INFO_NUM_GB_PIPES:
value = rdev->num_gb_pipes;
break;
case RADEON_INFO_NUM_Z_PIPES:
value = rdev->num_z_pipes;
break;
case RADEON_INFO_ACCEL_WORKING:
/* xf86-video-ati 6.13.0 relies on this being false for evergreen */
if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK))
value = false;
else
value = rdev->accel_working;
break;
case RADEON_INFO_CRTC_FROM_ID:
for (i = 0, found = 0; i < rdev->num_crtc; i++) {
crtc = (struct drm_crtc *)minfo->crtcs[i];
if (crtc && crtc->base.id == value) {
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
value = radeon_crtc->crtc_id;
found = 1;
break;
}
}
if (!found) {
DRM_DEBUG_KMS("unknown crtc id %d\n", value);
return -EINVAL;
}
break;
case RADEON_INFO_ACCEL_WORKING2:
value = rdev->accel_working;
break;
case RADEON_INFO_TILING_CONFIG:
if (rdev->family >= CHIP_CEDAR)
value = rdev->config.evergreen.tile_config;
else if (rdev->family >= CHIP_RV770)
value = rdev->config.rv770.tile_config;
else if (rdev->family >= CHIP_R600)
value = rdev->config.r600.tile_config;
else {
DRM_DEBUG_KMS("tiling config is r6xx+ only!\n");
return -EINVAL;
}
break;
case RADEON_INFO_WANT_HYPERZ:
/* The "value" here is both an input and output parameter.
* If the input value is 1, filp requests hyper-z access.
* If the input value is 0, filp revokes its hyper-z access.
*
* When returning, the value is 1 if filp owns hyper-z access,
* 0 otherwise. */
if (value >= 2) {
DRM_DEBUG_KMS("WANT_HYPERZ: invalid value %d\n", value);
return -EINVAL;
}
mutex_lock(&dev->struct_mutex);
if (value == 1) {
/* wants hyper-z */
if (!rdev->hyperz_filp)
rdev->hyperz_filp = filp;
} else if (value == 0) {
/* revokes hyper-z */
if (rdev->hyperz_filp == filp)
rdev->hyperz_filp = NULL;
}
value = rdev->hyperz_filp == filp ? 1 : 0;
mutex_unlock(&dev->struct_mutex);
break;
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->request);
return -EINVAL;
}
if (DRM_COPY_TO_USER(value_ptr, &value, sizeof(uint32_t))) {
DRM_ERROR("copy_to_user\n");
return -EFAULT;
}
return 0;
}
/*
* Outdated mess for old drm with Xorg being in charge (void function now).
*/
int radeon_driver_firstopen_kms(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
if (rdev->powered_down)
return -EINVAL;
return 0;
}
void radeon_driver_lastclose_kms(struct drm_device *dev)
{
vga_switcheroo_process_delayed_switch();
}
int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
{
return 0;
}
void radeon_driver_postclose_kms(struct drm_device *dev,
struct drm_file *file_priv)
{
}
void radeon_driver_preclose_kms(struct drm_device *dev,
struct drm_file *file_priv)
{
struct radeon_device *rdev = dev->dev_private;
if (rdev->hyperz_filp == file_priv)
rdev->hyperz_filp = NULL;
}
/*
* VBlank related functions.
*/
u32 radeon_get_vblank_counter_kms(struct drm_device *dev, int crtc)
{
struct radeon_device *rdev = dev->dev_private;
if (crtc < 0 || crtc >= rdev->num_crtc) {
DRM_ERROR("Invalid crtc %d\n", crtc);
return -EINVAL;
}
return radeon_get_vblank_counter(rdev, crtc);
}
int radeon_enable_vblank_kms(struct drm_device *dev, int crtc)
{
struct radeon_device *rdev = dev->dev_private;
if (crtc < 0 || crtc >= rdev->num_crtc) {
DRM_ERROR("Invalid crtc %d\n", crtc);
return -EINVAL;
}
rdev->irq.crtc_vblank_int[crtc] = true;
return radeon_irq_set(rdev);
}
void radeon_disable_vblank_kms(struct drm_device *dev, int crtc)
{
struct radeon_device *rdev = dev->dev_private;
if (crtc < 0 || crtc >= rdev->num_crtc) {
DRM_ERROR("Invalid crtc %d\n", crtc);
return;
}
rdev->irq.crtc_vblank_int[crtc] = false;
radeon_irq_set(rdev);
}
int radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
int *max_error,
struct timeval *vblank_time,
unsigned flags)
{
struct drm_crtc *drmcrtc;
struct radeon_device *rdev = dev->dev_private;
if (crtc < 0 || crtc >= dev->num_crtcs) {
DRM_ERROR("Invalid crtc %d\n", crtc);
return -EINVAL;
}
/* Get associated drm_crtc: */
drmcrtc = &rdev->mode_info.crtcs[crtc]->base;
/* Helper routine in DRM core does all the work: */
return drm_calc_vbltimestamp_from_scanoutpos(dev, crtc, max_error,
vblank_time, flags,
drmcrtc);
}
/*
* IOCTL.
*/
int radeon_dma_ioctl_kms(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
/* Not valid in KMS. */
return -EINVAL;
}
#define KMS_INVALID_IOCTL(name) \
int name(struct drm_device *dev, void *data, struct drm_file *file_priv)\
{ \
DRM_ERROR("invalid ioctl with kms %s\n", __func__); \
return -EINVAL; \
}
/*
* All these ioctls are invalid in kms world.
*/
KMS_INVALID_IOCTL(radeon_cp_init_kms)
KMS_INVALID_IOCTL(radeon_cp_start_kms)
KMS_INVALID_IOCTL(radeon_cp_stop_kms)
KMS_INVALID_IOCTL(radeon_cp_reset_kms)
KMS_INVALID_IOCTL(radeon_cp_idle_kms)
KMS_INVALID_IOCTL(radeon_cp_resume_kms)
KMS_INVALID_IOCTL(radeon_engine_reset_kms)
KMS_INVALID_IOCTL(radeon_fullscreen_kms)
KMS_INVALID_IOCTL(radeon_cp_swap_kms)
KMS_INVALID_IOCTL(radeon_cp_clear_kms)
KMS_INVALID_IOCTL(radeon_cp_vertex_kms)
KMS_INVALID_IOCTL(radeon_cp_indices_kms)
KMS_INVALID_IOCTL(radeon_cp_texture_kms)
KMS_INVALID_IOCTL(radeon_cp_stipple_kms)
KMS_INVALID_IOCTL(radeon_cp_indirect_kms)
KMS_INVALID_IOCTL(radeon_cp_vertex2_kms)
KMS_INVALID_IOCTL(radeon_cp_cmdbuf_kms)
KMS_INVALID_IOCTL(radeon_cp_getparam_kms)
KMS_INVALID_IOCTL(radeon_cp_flip_kms)
KMS_INVALID_IOCTL(radeon_mem_alloc_kms)
KMS_INVALID_IOCTL(radeon_mem_free_kms)
KMS_INVALID_IOCTL(radeon_mem_init_heap_kms)
KMS_INVALID_IOCTL(radeon_irq_emit_kms)
KMS_INVALID_IOCTL(radeon_irq_wait_kms)
KMS_INVALID_IOCTL(radeon_cp_setparam_kms)
KMS_INVALID_IOCTL(radeon_surface_alloc_kms)
KMS_INVALID_IOCTL(radeon_surface_free_kms)
struct drm_ioctl_desc radeon_ioctls_kms[] = {
DRM_IOCTL_DEF_DRV(RADEON_CP_INIT, radeon_cp_init_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(RADEON_CP_START, radeon_cp_start_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(RADEON_CP_STOP, radeon_cp_stop_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(RADEON_CP_RESET, radeon_cp_reset_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(RADEON_CP_IDLE, radeon_cp_idle_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_CP_RESUME, radeon_cp_resume_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_RESET, radeon_engine_reset_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_FULLSCREEN, radeon_fullscreen_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_SWAP, radeon_cp_swap_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_CLEAR, radeon_cp_clear_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_VERTEX, radeon_cp_vertex_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_INDICES, radeon_cp_indices_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_TEXTURE, radeon_cp_texture_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_STIPPLE, radeon_cp_stipple_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_INDIRECT, radeon_cp_indirect_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(RADEON_VERTEX2, radeon_cp_vertex2_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_CMDBUF, radeon_cp_cmdbuf_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_GETPARAM, radeon_cp_getparam_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_FLIP, radeon_cp_flip_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_ALLOC, radeon_mem_alloc_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_FREE, radeon_mem_free_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_INIT_HEAP, radeon_mem_init_heap_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(RADEON_IRQ_EMIT, radeon_irq_emit_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_IRQ_WAIT, radeon_irq_wait_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_SETPARAM, radeon_cp_setparam_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_SURF_ALLOC, radeon_surface_alloc_kms, DRM_AUTH),
DRM_IOCTL_DEF_DRV(RADEON_SURF_FREE, radeon_surface_free_kms, DRM_AUTH),
/* KMS */
DRM_IOCTL_DEF_DRV(RADEON_GEM_INFO, radeon_gem_info_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_CREATE, radeon_gem_create_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_MMAP, radeon_gem_mmap_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_DOMAIN, radeon_gem_set_domain_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_PREAD, radeon_gem_pread_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_PWRITE, radeon_gem_pwrite_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_WAIT_IDLE, radeon_gem_wait_idle_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_CS, radeon_cs_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_INFO, radeon_info_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_TILING, radeon_gem_set_tiling_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_GET_TILING, radeon_gem_get_tiling_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_BUSY, radeon_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
};
int radeon_max_kms_ioctl = DRM_ARRAY_SIZE(radeon_ioctls_kms);
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