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linux/drivers/gpu/drm/nouveau/nouveau_display.c
Lyude Paul 12885ecbfe drm/nouveau/kms/nvd9-: Add CRC support 
This introduces support for CRC readback on gf119+, using the
documentation generously provided to us by Nvidia:

https://github.com/NVIDIA/open-gpu-doc/blob/master/Display-CRC/display-crc.txt

We expose all available CRC sources. SF, SOR, PIOR, and DAC are exposed
through a single set of "outp" sources: outp-active/auto for a CRC of
the scanout region, outp-complete for a CRC of both the scanout and
blanking/sync region combined, and outp-inactive for a CRC of only the
blanking/sync region. For each source, nouveau selects the appropriate
tap point based on the output path in use. We also expose an "rg"
source, which allows for capturing CRCs of the scanout raster before
it's encoded into a video signal in the output path. This tap point is
referred to as the raster generator.

Note that while there's some other neat features that can be used with
CRC capture on nvidia hardware, like capturing from two CRC sources
simultaneously, I couldn't see any usecase for them and did not
implement them.

Nvidia only allows for accessing CRCs through a shared DMA region that
we program through the core EVO/NvDisplay channel which is referred to
as the notifier context. The notifier context is limited to either 255
(for Fermi-Pascal) or 2047 (Volta+) entries to store CRCs in, and
unfortunately the hardware simply drops CRCs and reports an overflow
once all available entries in the notifier context are filled.

Since the DRM CRC API and igt-gpu-tools don't expect there to be a limit
on how many CRCs can be captured, we work around this in nouveau by
allocating two separate notifier contexts for each head instead of one.
We schedule a vblank worker ahead of time so that once we start getting
close to filling up all of the available entries in the notifier
context, we can swap the currently used notifier context out with
another pre-prepared notifier context in a manner similar to page
flipping.

Unfortunately, the hardware only allows us to this by flushing two
separate updates on the core channel: one to release the current
notifier context handle, and one to program the next notifier context's
handle. When the hardware processes the first update, the CRC for the
current frame is lost. However, the second update can be flushed
immediately without waiting for the first to complete so that CRC
generation resumes on the next frame. According to Nvidia's hardware
engineers, there isn't any cleaner way of flipping notifier contexts
that would avoid this.

Since using vblank workers to swap out the notifier context will ensure
we can usually flush both updates to hardware within the timespan of a
single frame, we can also ensure that there will only be exactly one
frame lost between the first and second update being executed by the
hardware. This gives us the guarantee that we're always correctly
matching each CRC entry with it's respective frame even after a context
flip. And since IGT will retrieve the CRC entry for a frame by waiting
until it receives a CRC for any subsequent frames, this doesn't cause an
issue with any tests and is much simpler than trying to change the
current DRM API to accommodate.

In order to facilitate testing of correct handling of this limitation,
we also expose a debugfs interface to manually control the threshold for
when we start trying to flip the notifier context. We will use this in
igt to trigger a context flip for testing purposes without needing to
wait for the notifier to completely fill up. This threshold is reset
to the default value set by nouveau after each capture, and is exposed
in a separate folder within each CRTC's debugfs directory labelled
"nv_crc".

Changes since v1:
* Forgot to finish saving crc.h before saving, whoops. This just adds
  some corrections to the empty function declarations that we use if
  CONFIG_DEBUG_FS isn't enabled.
Changes since v2:
* Don't check return code from debugfs_create_dir() or
  debugfs_create_file() - Greg K-H
Changes since v3:
  (no functional changes)
* Fix SPDX license identifiers (checkpatch)
* s/uint32_t/u32/ (checkpatch)
* Fix indenting in switch cases (checkpatch)
Changes since v4:
* Remove unneeded param changes with nv50_head_flush_clr/set
* Rebase
Changes since v5:
* Remove set but unused variable (outp) in nv50_crc_atomic_check() -
  Kbuild bot

Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200627194657.156514-10-lyude@redhat.com
2020-07-16 18:16:33 -04:00

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/*
* Copyright (C) 2008 Maarten Maathuis.
* All Rights Reserved.
*
* 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 (including the
* next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
*
*/
#include <acpi/video.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_vblank.h>
#include "nouveau_fbcon.h"
#include "nouveau_crtc.h"
#include "nouveau_gem.h"
#include "nouveau_connector.h"
#include "nv50_display.h"
#include <nvif/class.h>
#include <nvif/cl0046.h>
#include <nvif/event.h>
#include <dispnv50/crc.h>
int
nouveau_display_vblank_enable(struct drm_crtc *crtc)
{
struct nouveau_crtc *nv_crtc;
nv_crtc = nouveau_crtc(crtc);
nvif_notify_get(&nv_crtc->vblank);
return 0;
}
void
nouveau_display_vblank_disable(struct drm_crtc *crtc)
{
struct nouveau_crtc *nv_crtc;
nv_crtc = nouveau_crtc(crtc);
nvif_notify_put(&nv_crtc->vblank);
}
static inline int
calc(int blanks, int blanke, int total, int line)
{
if (blanke >= blanks) {
if (line >= blanks)
line -= total;
} else {
if (line >= blanks)
line -= total;
line -= blanke + 1;
}
return line;
}
static bool
nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
ktime_t *stime, ktime_t *etime)
{
struct {
struct nv04_disp_mthd_v0 base;
struct nv04_disp_scanoutpos_v0 scan;
} args = {
.base.method = NV04_DISP_SCANOUTPOS,
.base.head = nouveau_crtc(crtc)->index,
};
struct nouveau_display *disp = nouveau_display(crtc->dev);
struct drm_vblank_crtc *vblank = &crtc->dev->vblank[drm_crtc_index(crtc)];
int retry = 20;
bool ret = false;
do {
ret = nvif_mthd(&disp->disp.object, 0, &args, sizeof(args));
if (ret != 0)
return false;
if (args.scan.vline) {
ret = true;
break;
}
if (retry) ndelay(vblank->linedur_ns);
} while (retry--);
*hpos = args.scan.hline;
*vpos = calc(args.scan.vblanks, args.scan.vblanke,
args.scan.vtotal, args.scan.vline);
if (stime) *stime = ns_to_ktime(args.scan.time[0]);
if (etime) *etime = ns_to_ktime(args.scan.time[1]);
return ret;
}
bool
nouveau_display_scanoutpos(struct drm_crtc *crtc,
bool in_vblank_irq, int *vpos, int *hpos,
ktime_t *stime, ktime_t *etime,
const struct drm_display_mode *mode)
{
return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
stime, etime);
}
static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
.destroy = drm_gem_fb_destroy,
.create_handle = drm_gem_fb_create_handle,
};
static void
nouveau_decode_mod(struct nouveau_drm *drm,
uint64_t modifier,
uint32_t *tile_mode,
uint8_t *kind)
{
BUG_ON(!tile_mode || !kind);
if (modifier == DRM_FORMAT_MOD_LINEAR) {
/* tile_mode will not be used in this case */
*tile_mode = 0;
*kind = 0;
} else {
/*
* Extract the block height and kind from the corresponding
* modifier fields. See drm_fourcc.h for details.
*/
*tile_mode = (uint32_t)(modifier & 0xF);
*kind = (uint8_t)((modifier >> 12) & 0xFF);
if (drm->client.device.info.chipset >= 0xc0)
*tile_mode <<= 4;
}
}
void
nouveau_framebuffer_get_layout(struct drm_framebuffer *fb,
uint32_t *tile_mode,
uint8_t *kind)
{
if (fb->flags & DRM_MODE_FB_MODIFIERS) {
struct nouveau_drm *drm = nouveau_drm(fb->dev);
nouveau_decode_mod(drm, fb->modifier, tile_mode, kind);
} else {
const struct nouveau_bo *nvbo = nouveau_gem_object(fb->obj[0]);
*tile_mode = nvbo->mode;
*kind = nvbo->kind;
}
}
static int
nouveau_validate_decode_mod(struct nouveau_drm *drm,
uint64_t modifier,
uint32_t *tile_mode,
uint8_t *kind)
{
struct nouveau_display *disp = nouveau_display(drm->dev);
int mod;
if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
return -EINVAL;
}
BUG_ON(!disp->format_modifiers);
for (mod = 0;
(disp->format_modifiers[mod] != DRM_FORMAT_MOD_INVALID) &&
(disp->format_modifiers[mod] != modifier);
mod++);
if (disp->format_modifiers[mod] == DRM_FORMAT_MOD_INVALID)
return -EINVAL;
nouveau_decode_mod(drm, modifier, tile_mode, kind);
return 0;
}
static inline uint32_t
nouveau_get_width_in_blocks(uint32_t stride)
{
/* GOBs per block in the x direction is always one, and GOBs are
* 64 bytes wide
*/
static const uint32_t log_block_width = 6;
return (stride + (1 << log_block_width) - 1) >> log_block_width;
}
static inline uint32_t
nouveau_get_height_in_blocks(struct nouveau_drm *drm,
uint32_t height,
uint32_t log_block_height_in_gobs)
{
uint32_t log_gob_height;
uint32_t log_block_height;
BUG_ON(drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA);
if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
log_gob_height = 2;
else
log_gob_height = 3;
log_block_height = log_block_height_in_gobs + log_gob_height;
return (height + (1 << log_block_height) - 1) >> log_block_height;
}
static int
nouveau_check_bl_size(struct nouveau_drm *drm, struct nouveau_bo *nvbo,
uint32_t offset, uint32_t stride, uint32_t h,
uint32_t tile_mode)
{
uint32_t gob_size, bw, bh;
uint64_t bl_size;
BUG_ON(drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA);
if (drm->client.device.info.chipset >= 0xc0) {
if (tile_mode & 0xF)
return -EINVAL;
tile_mode >>= 4;
}
if (tile_mode & 0xFFFFFFF0)
return -EINVAL;
if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
gob_size = 256;
else
gob_size = 512;
bw = nouveau_get_width_in_blocks(stride);
bh = nouveau_get_height_in_blocks(drm, h, tile_mode);
bl_size = bw * bh * (1 << tile_mode) * gob_size;
DRM_DEBUG_KMS("offset=%u stride=%u h=%u tile_mode=0x%02x bw=%u bh=%u gob_size=%u bl_size=%llu size=%lu\n",
offset, stride, h, tile_mode, bw, bh, gob_size, bl_size,
nvbo->bo.mem.size);
if (bl_size + offset > nvbo->bo.mem.size)
return -ERANGE;
return 0;
}
int
nouveau_framebuffer_new(struct drm_device *dev,
const struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object *gem,
struct drm_framebuffer **pfb)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nouveau_bo *nvbo = nouveau_gem_object(gem);
struct drm_framebuffer *fb;
const struct drm_format_info *info;
unsigned int width, height, i;
uint32_t tile_mode;
uint8_t kind;
int ret;
/* YUV overlays have special requirements pre-NV50 */
if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
(mode_cmd->pixel_format == DRM_FORMAT_YUYV ||
mode_cmd->pixel_format == DRM_FORMAT_UYVY ||
mode_cmd->pixel_format == DRM_FORMAT_NV12 ||
mode_cmd->pixel_format == DRM_FORMAT_NV21) &&
(mode_cmd->pitches[0] & 0x3f || /* align 64 */
mode_cmd->pitches[0] >= 0x10000 || /* at most 64k pitch */
(mode_cmd->pitches[1] && /* pitches for planes must match */
mode_cmd->pitches[0] != mode_cmd->pitches[1]))) {
struct drm_format_name_buf format_name;
DRM_DEBUG_KMS("Unsuitable framebuffer: format: %s; pitches: 0x%x\n 0x%x\n",
drm_get_format_name(mode_cmd->pixel_format,
&format_name),
mode_cmd->pitches[0],
mode_cmd->pitches[1]);
return -EINVAL;
}
if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
if (nouveau_validate_decode_mod(drm, mode_cmd->modifier[0],
&tile_mode, &kind)) {
DRM_DEBUG_KMS("Unsupported modifier: 0x%llx\n",
mode_cmd->modifier[0]);
return -EINVAL;
}
} else {
tile_mode = nvbo->mode;
kind = nvbo->kind;
}
info = drm_get_format_info(dev, mode_cmd);
for (i = 0; i < info->num_planes; i++) {
width = drm_format_info_plane_width(info,
mode_cmd->width,
i);
height = drm_format_info_plane_height(info,
mode_cmd->height,
i);
if (kind) {
ret = nouveau_check_bl_size(drm, nvbo,
mode_cmd->offsets[i],
mode_cmd->pitches[i],
height, tile_mode);
if (ret)
return ret;
} else {
uint32_t size = mode_cmd->pitches[i] * height;
if (size + mode_cmd->offsets[i] > nvbo->bo.mem.size)
return -ERANGE;
}
}
if (!(fb = *pfb = kzalloc(sizeof(*fb), GFP_KERNEL)))
return -ENOMEM;
drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
fb->obj[0] = gem;
ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
if (ret)
kfree(fb);
return ret;
}
struct drm_framebuffer *
nouveau_user_framebuffer_create(struct drm_device *dev,
struct drm_file *file_priv,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
struct drm_framebuffer *fb;
struct drm_gem_object *gem;
int ret;
gem = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
if (!gem)
return ERR_PTR(-ENOENT);
ret = nouveau_framebuffer_new(dev, mode_cmd, gem, &fb);
if (ret == 0)
return fb;
drm_gem_object_put(gem);
return ERR_PTR(ret);
}
static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
.fb_create = nouveau_user_framebuffer_create,
.output_poll_changed = nouveau_fbcon_output_poll_changed,
};
struct nouveau_drm_prop_enum_list {
u8 gen_mask;
int type;
char *name;
};
static struct nouveau_drm_prop_enum_list underscan[] = {
{ 6, UNDERSCAN_AUTO, "auto" },
{ 6, UNDERSCAN_OFF, "off" },
{ 6, UNDERSCAN_ON, "on" },
{}
};
static struct nouveau_drm_prop_enum_list dither_mode[] = {
{ 7, DITHERING_MODE_AUTO, "auto" },
{ 7, DITHERING_MODE_OFF, "off" },
{ 1, DITHERING_MODE_ON, "on" },
{ 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
{ 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
{ 4, DITHERING_MODE_TEMPORAL, "temporal" },
{}
};
static struct nouveau_drm_prop_enum_list dither_depth[] = {
{ 6, DITHERING_DEPTH_AUTO, "auto" },
{ 6, DITHERING_DEPTH_6BPC, "6 bpc" },
{ 6, DITHERING_DEPTH_8BPC, "8 bpc" },
{}
};
#define PROP_ENUM(p,gen,n,list) do { \
struct nouveau_drm_prop_enum_list *l = (list); \
int c = 0; \
while (l->gen_mask) { \
if (l->gen_mask & (1 << (gen))) \
c++; \
l++; \
} \
if (c) { \
p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c); \
l = (list); \
while (p && l->gen_mask) { \
if (l->gen_mask & (1 << (gen))) { \
drm_property_add_enum(p, l->type, l->name); \
} \
l++; \
} \
} \
} while(0)
static void
nouveau_display_hpd_work(struct work_struct *work)
{
struct nouveau_drm *drm = container_of(work, typeof(*drm), hpd_work);
pm_runtime_get_sync(drm->dev->dev);
drm_helper_hpd_irq_event(drm->dev);
pm_runtime_mark_last_busy(drm->dev->dev);
pm_runtime_put_sync(drm->dev->dev);
}
#ifdef CONFIG_ACPI
static int
nouveau_display_acpi_ntfy(struct notifier_block *nb, unsigned long val,
void *data)
{
struct nouveau_drm *drm = container_of(nb, typeof(*drm), acpi_nb);
struct acpi_bus_event *info = data;
int ret;
if (!strcmp(info->device_class, ACPI_VIDEO_CLASS)) {
if (info->type == ACPI_VIDEO_NOTIFY_PROBE) {
ret = pm_runtime_get(drm->dev->dev);
if (ret == 1 || ret == -EACCES) {
/* If the GPU is already awake, or in a state
* where we can't wake it up, it can handle
* it's own hotplug events.
*/
pm_runtime_put_autosuspend(drm->dev->dev);
} else if (ret == 0) {
/* This may be the only indication we receive
* of a connector hotplug on a runtime
* suspended GPU, schedule hpd_work to check.
*/
NV_DEBUG(drm, "ACPI requested connector reprobe\n");
schedule_work(&drm->hpd_work);
pm_runtime_put_noidle(drm->dev->dev);
} else {
NV_WARN(drm, "Dropped ACPI reprobe event due to RPM error: %d\n",
ret);
}
/* acpi-video should not generate keypresses for this */
return NOTIFY_BAD;
}
}
return NOTIFY_DONE;
}
#endif
int
nouveau_display_init(struct drm_device *dev, bool resume, bool runtime)
{
struct nouveau_display *disp = nouveau_display(dev);
struct drm_connector *connector;
struct drm_connector_list_iter conn_iter;
int ret;
/*
* Enable hotplug interrupts (done as early as possible, since we need
* them for MST)
*/
drm_connector_list_iter_begin(dev, &conn_iter);
nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
struct nouveau_connector *conn = nouveau_connector(connector);
nvif_notify_get(&conn->hpd);
}
drm_connector_list_iter_end(&conn_iter);
ret = disp->init(dev, resume, runtime);
if (ret)
return ret;
/* enable connector detection and polling for connectors without HPD
* support
*/
drm_kms_helper_poll_enable(dev);
return ret;
}
void
nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime)
{
struct nouveau_display *disp = nouveau_display(dev);
struct nouveau_drm *drm = nouveau_drm(dev);
struct drm_connector *connector;
struct drm_connector_list_iter conn_iter;
if (!suspend) {
if (drm_drv_uses_atomic_modeset(dev))
drm_atomic_helper_shutdown(dev);
else
drm_helper_force_disable_all(dev);
}
/* disable hotplug interrupts */
drm_connector_list_iter_begin(dev, &conn_iter);
nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
struct nouveau_connector *conn = nouveau_connector(connector);
nvif_notify_put(&conn->hpd);
}
drm_connector_list_iter_end(&conn_iter);
if (!runtime)
cancel_work_sync(&drm->hpd_work);
drm_kms_helper_poll_disable(dev);
disp->fini(dev, suspend);
}
static void
nouveau_display_create_properties(struct drm_device *dev)
{
struct nouveau_display *disp = nouveau_display(dev);
int gen;
if (disp->disp.object.oclass < NV50_DISP)
gen = 0;
else
if (disp->disp.object.oclass < GF110_DISP)
gen = 1;
else
gen = 2;
PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
disp->underscan_hborder_property =
drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
disp->underscan_vborder_property =
drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
if (gen < 1)
return;
/* -90..+90 */
disp->vibrant_hue_property =
drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
/* -100..+100 */
disp->color_vibrance_property =
drm_property_create_range(dev, 0, "color vibrance", 0, 200);
}
int
nouveau_display_create(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_device *device = nvxx_device(&drm->client.device);
struct nouveau_display *disp;
int ret;
disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
if (!disp)
return -ENOMEM;
drm_mode_config_init(dev);
drm_mode_create_scaling_mode_property(dev);
drm_mode_create_dvi_i_properties(dev);
dev->mode_config.funcs = &nouveau_mode_config_funcs;
dev->mode_config.fb_base = device->func->resource_addr(device, 1);
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
if (drm->client.device.info.family < NV_DEVICE_INFO_V0_CELSIUS) {
dev->mode_config.max_width = 2048;
dev->mode_config.max_height = 2048;
} else
if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
dev->mode_config.max_width = 4096;
dev->mode_config.max_height = 4096;
} else
if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI) {
dev->mode_config.max_width = 8192;
dev->mode_config.max_height = 8192;
} else {
dev->mode_config.max_width = 16384;
dev->mode_config.max_height = 16384;
}
dev->mode_config.preferred_depth = 24;
dev->mode_config.prefer_shadow = 1;
dev->mode_config.allow_fb_modifiers = true;
if (drm->client.device.info.chipset < 0x11)
dev->mode_config.async_page_flip = false;
else
dev->mode_config.async_page_flip = true;
drm_kms_helper_poll_init(dev);
drm_kms_helper_poll_disable(dev);
if (nouveau_modeset != 2 && drm->vbios.dcb.entries) {
ret = nvif_disp_ctor(&drm->client.device, 0, &disp->disp);
if (ret == 0) {
nouveau_display_create_properties(dev);
if (disp->disp.object.oclass < NV50_DISP)
ret = nv04_display_create(dev);
else
ret = nv50_display_create(dev);
}
} else {
ret = 0;
}
if (ret)
goto disp_create_err;
drm_mode_config_reset(dev);
if (dev->mode_config.num_crtc) {
ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
if (ret)
goto vblank_err;
if (disp->disp.object.oclass >= NV50_DISP)
nv50_crc_init(dev);
}
INIT_WORK(&drm->hpd_work, nouveau_display_hpd_work);
#ifdef CONFIG_ACPI
drm->acpi_nb.notifier_call = nouveau_display_acpi_ntfy;
register_acpi_notifier(&drm->acpi_nb);
#endif
return 0;
vblank_err:
disp->dtor(dev);
disp_create_err:
drm_kms_helper_poll_fini(dev);
drm_mode_config_cleanup(dev);
return ret;
}
void
nouveau_display_destroy(struct drm_device *dev)
{
struct nouveau_display *disp = nouveau_display(dev);
#ifdef CONFIG_ACPI
unregister_acpi_notifier(&nouveau_drm(dev)->acpi_nb);
#endif
drm_kms_helper_poll_fini(dev);
drm_mode_config_cleanup(dev);
if (disp->dtor)
disp->dtor(dev);
nvif_disp_dtor(&disp->disp);
nouveau_drm(dev)->display = NULL;
kfree(disp);
}
int
nouveau_display_suspend(struct drm_device *dev, bool runtime)
{
struct nouveau_display *disp = nouveau_display(dev);
if (drm_drv_uses_atomic_modeset(dev)) {
if (!runtime) {
disp->suspend = drm_atomic_helper_suspend(dev);
if (IS_ERR(disp->suspend)) {
int ret = PTR_ERR(disp->suspend);
disp->suspend = NULL;
return ret;
}
}
}
nouveau_display_fini(dev, true, runtime);
return 0;
}
void
nouveau_display_resume(struct drm_device *dev, bool runtime)
{
struct nouveau_display *disp = nouveau_display(dev);
nouveau_display_init(dev, true, runtime);
if (drm_drv_uses_atomic_modeset(dev)) {
if (disp->suspend) {
drm_atomic_helper_resume(dev, disp->suspend);
disp->suspend = NULL;
}
return;
}
}
int
nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
struct nouveau_cli *cli = nouveau_cli(file_priv);
struct nouveau_bo *bo;
uint32_t domain;
int ret;
args->pitch = roundup(args->width * (args->bpp / 8), 256);
args->size = args->pitch * args->height;
args->size = roundup(args->size, PAGE_SIZE);
/* Use VRAM if there is any ; otherwise fallback to system memory */
if (nouveau_drm(dev)->client.device.info.ram_size != 0)
domain = NOUVEAU_GEM_DOMAIN_VRAM;
else
domain = NOUVEAU_GEM_DOMAIN_GART;
ret = nouveau_gem_new(cli, args->size, 0, domain, 0, 0, &bo);
if (ret)
return ret;
ret = drm_gem_handle_create(file_priv, &bo->bo.base, &args->handle);
drm_gem_object_put(&bo->bo.base);
return ret;
}
int
nouveau_display_dumb_map_offset(struct drm_file *file_priv,
struct drm_device *dev,
uint32_t handle, uint64_t *poffset)
{
struct drm_gem_object *gem;
gem = drm_gem_object_lookup(file_priv, handle);
if (gem) {
struct nouveau_bo *bo = nouveau_gem_object(gem);
*poffset = drm_vma_node_offset_addr(&bo->bo.base.vma_node);
drm_gem_object_put(gem);
return 0;
}
return -ENOENT;
}
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