static void job_free(struct kref *ref)
{
struct nvhost_job *job = container_of(ref, struct nvhost_job, ref);
if (job->gathers)
nvmap_munmap(job->gather_mem, job->gathers);
if (job->gather_mem)
nvmap_free(job->nvmap, job->gather_mem);
if (job->nvmap)
nvmap_client_put(job->nvmap);
vfree(job);
}
static int tegra_dc_ext_set_nvmap_fd(struct tegra_dc_ext_user *user,
int fd)
{
struct nvmap_client *nvmap = NULL;
if (fd >= 0) {
nvmap = nvmap_client_get_file(fd);
if (IS_ERR(nvmap))
return PTR_ERR(nvmap);
}
if (user->nvmap)
nvmap_client_put(user->nvmap);
user->nvmap = nvmap;
return 0;
}
void tegra_dc_ext_unregister(struct tegra_dc_ext *ext)
{
int i;
for (i = 0; i < ext->dc->n_windows; i++) {
struct tegra_dc_ext_win *win = &ext->win[i];
flush_workqueue(win->flip_wq);
destroy_workqueue(win->flip_wq);
}
nvmap_client_put(ext->nvmap);
device_del(ext->dev);
cdev_del(&ext->cdev);
kfree(ext);
head_count--;
}
static int tegra_dc_release(struct inode *inode, struct file *filp)
{
struct tegra_dc_ext_user *user = filp->private_data;
struct tegra_dc_ext *ext = user->ext;
unsigned int i;
for (i = 0; i < DC_N_WINDOWS; i++) {
if (ext->win[i].user == user)
tegra_dc_ext_put_window(user, i);
}
if (ext->cursor.user == user)
tegra_dc_ext_put_cursor(user);
if (user->nvmap)
nvmap_client_put(user->nvmap);
kfree(user);
return 0;
}
static int nvhost_channelrelease(struct inode *inode, struct file *filp)
{
struct nvhost_channel_userctx *priv = filp->private_data;
trace_nvhost_channel_release(priv->ch->desc->name);
filp->private_data = NULL;
nvhost_module_remove_client(priv->ch->dev, &priv->ch->mod, priv);
nvhost_putchannel(priv->ch, priv->hwctx);
if (priv->hwctx)
priv->ch->ctxhandler.put(priv->hwctx);
if (priv->job)
nvhost_job_put(priv->job);
nvmap_client_put(priv->nvmap);
kfree(priv);
return 0;
}
static int tegra_overlay_release(struct inode *inode, struct file *filp)
{
struct overlay_client *client = filp->private_data;
unsigned long flags;
int i;
mutex_lock(&client->dev->overlays_lock);
for (i = 0; i < client->dev->dc->n_windows; i++)
if (client->dev->overlays[i].owner == client)
tegra_overlay_put_locked(client, i);
mutex_unlock(&client->dev->overlays_lock);
spin_lock_irqsave(&client->dev->clients_lock, flags);
list_del(&client->list);
spin_unlock_irqrestore(&client->dev->clients_lock, flags);
nvmap_client_put(client->user_nvmap);
put_task_struct(client->task);
kfree(client);
return 0;
}
static int tegra_overlay_ioctl_set_nvmap_fd(struct overlay_client *client,
void __user *arg)
{
int fd;
struct nvmap_client *nvmap = NULL;
if (copy_from_user(&fd, arg, sizeof(fd)))
return -EFAULT;
if (fd < 0)
return -EINVAL;
nvmap = nvmap_client_get_file(fd);
if (IS_ERR(nvmap))
return PTR_ERR(nvmap);
if (client->user_nvmap)
nvmap_client_put(client->user_nvmap);
client->user_nvmap = nvmap;
return 0;
}
static int nvhost_channelrelease(struct inode *inode, struct file *filp)
{
struct nvhost_channel_userctx *priv = filp->private_data;
trace_nvhost_channel_release(priv->ch->desc->name);
filp->private_data = NULL;
nvhost_module_remove_client(priv->ch->dev, &priv->ch->mod, priv);
nvhost_putchannel(priv->ch, priv->hwctx);
if (priv->hwctx)
priv->ch->ctxhandler.put(priv->hwctx);
if (priv->gathers)
nvmap_munmap(priv->gather_mem, priv->gathers);
if (!IS_ERR_OR_NULL(priv->gather_mem))
nvmap_free(priv->ch->dev->nvmap, priv->gather_mem);
nvmap_client_put(priv->nvmap);
kfree(priv);
return 0;
}
struct tegra_dc_ext *tegra_dc_ext_register(struct nvhost_device *ndev,
struct tegra_dc *dc)
{
int ret;
struct tegra_dc_ext *ext;
int devno;
ext = kzalloc(sizeof(*ext), GFP_KERNEL);
if (!ext)
return ERR_PTR(-ENOMEM);
BUG_ON(!tegra_dc_ext_devno);
devno = tegra_dc_ext_devno + head_count + 1;
cdev_init(&ext->cdev, &tegra_dc_devops);
ext->cdev.owner = THIS_MODULE;
ret = cdev_add(&ext->cdev, devno, 1);
if (ret) {
dev_err(&ndev->dev, "Failed to create character device\n");
goto cleanup_alloc;
}
ext->dev = device_create(tegra_dc_ext_class,
&ndev->dev,
devno,
NULL,
"tegra_dc_%d",
ndev->id);
if (IS_ERR(ext->dev)) {
ret = PTR_ERR(ext->dev);
goto cleanup_cdev;
}
ext->dc = dc;
ext->nvmap = nvmap_create_client(nvmap_dev, "tegra_dc_ext");
if (!ext->nvmap) {
ret = -ENOMEM;
goto cleanup_device;
}
ret = tegra_dc_ext_setup_windows(ext);
if (ret)
goto cleanup_nvmap;
mutex_init(&ext->cursor.lock);
head_count++;
return ext;
cleanup_nvmap:
nvmap_client_put(ext->nvmap);
cleanup_device:
device_del(ext->dev);
cleanup_cdev:
cdev_del(&ext->cdev);
cleanup_alloc:
kfree(ext);
return ERR_PTR(ret);
}
/**
* For all sync queue entries that have already finished according to the
* current sync point registers:
* - unpin & unref their mems
* - pop their push buffer slots
* - remove them from the sync queue
* This is normally called from the host code's worker thread, but can be
* called manually if necessary.
* Must be called with the cdma lock held.
*/
static void update_cdma(struct nvhost_cdma *cdma)
{
bool signal = false;
struct nvhost_master *dev = cdma_to_dev(cdma);
BUG_ON(!cdma->running);
/*
* Walk the sync queue, reading the sync point registers as necessary,
* to consume as many sync queue entries as possible without blocking
*/
for (;;) {
u32 syncpt_id, syncpt_val;
u32 timeout;
struct nvhost_userctx_timeout *timeout_ref = NULL;
unsigned int nr_slots, nr_handles;
struct nvhost_syncpt *sp = &dev->syncpt;
struct nvmap_handle **handles;
struct nvmap_client *nvmap;
u32 *sync;
sync = sync_queue_head(&cdma->sync_queue);
if (!sync) {
if (cdma->event == CDMA_EVENT_SYNC_QUEUE_EMPTY)
signal = true;
break;
}
syncpt_id = sync[SQ_IDX_SYNCPT_ID];
syncpt_val = sync[SQ_IDX_SYNCPT_VAL];
timeout = sync[SQ_IDX_TIMEOUT];
timeout_ref = (struct nvhost_userctx_timeout *)
sync[SQ_IDX_TIMEOUT_CTX];
BUG_ON(syncpt_id == NVSYNCPT_INVALID);
/* Check whether this syncpt has completed, and bail if not */
if (!nvhost_syncpt_min_cmp(sp, syncpt_id, syncpt_val)) {
/* Start timer on next pending syncpt */
if (timeout) {
nvhost_cdma_start_timer(cdma, syncpt_id,
syncpt_val, timeout_ref);
}
break;
}
/* Cancel timeout, when a buffer completes */
if (cdma->timeout.ctx_timeout)
stop_cdma_timer(cdma);
nr_slots = sync[SQ_IDX_NUM_SLOTS];
nr_handles = sync[SQ_IDX_NUM_HANDLES];
nvmap = (struct nvmap_client *)sync[SQ_IDX_NVMAP_CTX];
handles = (struct nvmap_handle **)&sync[SQ_IDX_HANDLES];
BUG_ON(!nvmap);
/* Unpin the memory */
nvmap_unpin_handles(nvmap, handles, nr_handles);
nvmap_client_put(nvmap);
/* Pop push buffer slots */
if (nr_slots) {
struct push_buffer *pb = &cdma->push_buffer;
BUG_ON(!cdma_pb_op(cdma).pop_from);
cdma_pb_op(cdma).pop_from(pb, nr_slots);
if (cdma->event == CDMA_EVENT_PUSH_BUFFER_SPACE)
signal = true;
}
dequeue_sync_queue_head(&cdma->sync_queue);
if (cdma->event == CDMA_EVENT_SYNC_QUEUE_SPACE)
signal = true;
}
/* Wake up CdmaWait() if the requested event happened */
if (signal) {
cdma->event = CDMA_EVENT_NONE;
up(&cdma->sem);
}
}
static int __devinit nvhost_probe(struct platform_device *pdev)
{
struct nvhost_master *host;
struct resource *regs, *intr0, *intr1;
int i, err;
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
intr0 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
intr1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
if (!regs || !intr0 || !intr1) {
dev_err(&pdev->dev, "missing required platform resources\n");
return -ENXIO;
}
host = kzalloc(sizeof(*host), GFP_KERNEL);
if (!host)
return -ENOMEM;
host->pdev = pdev;
host->nvmap = nvmap_create_client(nvmap_dev, "nvhost");
if (!host->nvmap) {
dev_err(&pdev->dev, "unable to create nvmap client\n");
err = -EIO;
goto fail;
}
host->reg_mem = request_mem_region(regs->start,
resource_size(regs), pdev->name);
if (!host->reg_mem) {
dev_err(&pdev->dev, "failed to get host register memory\n");
err = -ENXIO;
goto fail;
}
host->aperture = ioremap(regs->start, resource_size(regs));
if (!host->aperture) {
dev_err(&pdev->dev, "failed to remap host registers\n");
err = -ENXIO;
goto fail;
}
err = nvhost_init_chip_support(host);
if (err) {
dev_err(&pdev->dev, "failed to init chip support\n");
goto fail;
}
for (i = 0; i < host->nb_channels; i++) {
struct nvhost_channel *ch = &host->channels[i];
BUG_ON(!host_channel_op(host).init);
err = host_channel_op(host).init(ch, host, i);
if (err < 0) {
dev_err(&pdev->dev, "failed to init channel %d\n", i);
goto fail;
}
}
err = nvhost_cpuaccess_init(&host->cpuaccess, pdev);
if (err)
goto fail;
err = nvhost_intr_init(&host->intr, intr1->start, intr0->start);
if (err)
goto fail;
err = nvhost_user_init(host);
if (err)
goto fail;
err = nvhost_module_init(&host->mod, "host1x",
&hostdesc, NULL, &pdev->dev);
for (i = 0; i < host->nb_channels; i++) {
struct nvhost_channel *ch = &host->channels[i];
nvhost_module_preinit(ch->desc->name,
&ch->desc->module);
}
if (err)
goto fail;
platform_set_drvdata(pdev, host);
clk_enable(host->mod.clk[0]);
nvhost_syncpt_reset(&host->syncpt);
clk_disable(host->mod.clk[0]);
nvhost_bus_register(host);
nvhost_debug_init(host);
dev_info(&pdev->dev, "initialized\n");
return 0;
fail:
nvhost_remove_chip_support(host);
if (host->nvmap)
nvmap_client_put(host->nvmap);
kfree(host);
return err;
}
static long nvhost_channelctl(struct file *filp,
unsigned int cmd, unsigned long arg)
{
struct nvhost_channel_userctx *priv = filp->private_data;
u8 buf[NVHOST_IOCTL_CHANNEL_MAX_ARG_SIZE];
int err = 0;
if ((_IOC_TYPE(cmd) != NVHOST_IOCTL_MAGIC) ||
(_IOC_NR(cmd) == 0) ||
(_IOC_NR(cmd) > NVHOST_IOCTL_CHANNEL_LAST))
return -EFAULT;
BUG_ON(_IOC_SIZE(cmd) > NVHOST_IOCTL_CHANNEL_MAX_ARG_SIZE);
if (_IOC_DIR(cmd) & _IOC_WRITE) {
if (copy_from_user(buf, (void __user *)arg, _IOC_SIZE(cmd)))
return -EFAULT;
}
switch (cmd) {
case NVHOST_IOCTL_CHANNEL_FLUSH:
err = nvhost_ioctl_channel_flush(priv, (void *)buf, 0);
break;
case NVHOST_IOCTL_CHANNEL_NULL_KICKOFF:
err = nvhost_ioctl_channel_flush(priv, (void *)buf, 1);
break;
case NVHOST_IOCTL_CHANNEL_SUBMIT_EXT:
{
struct nvhost_submit_hdr_ext *hdr;
if (priv->hdr.num_relocs ||
priv->num_relocshifts ||
priv->hdr.num_cmdbufs ||
priv->hdr.num_waitchks) {
reset_submit(priv);
dev_err(&priv->ch->dev->pdev->dev,
"channel submit out of sync\n");
err = -EIO;
break;
}
hdr = (struct nvhost_submit_hdr_ext *)buf;
if (hdr->submit_version > NVHOST_SUBMIT_VERSION_MAX_SUPPORTED) {
dev_err(&priv->ch->dev->pdev->dev,
"submit version %d > max supported %d\n",
hdr->submit_version,
NVHOST_SUBMIT_VERSION_MAX_SUPPORTED);
err = -EINVAL;
break;
}
memcpy(&priv->hdr, hdr, sizeof(struct nvhost_submit_hdr_ext));
err = set_submit(priv);
trace_nvhost_ioctl_channel_submit(priv->ch->desc->name,
priv->hdr.submit_version,
priv->hdr.num_cmdbufs, priv->hdr.num_relocs,
priv->hdr.num_waitchks,
priv->hdr.syncpt_id, priv->hdr.syncpt_incrs);
break;
}
case NVHOST_IOCTL_CHANNEL_GET_SYNCPOINTS:
/* host syncpt ID is used by the RM (and never be given out) */
BUG_ON(priv->ch->desc->syncpts & (1 << NVSYNCPT_GRAPHICS_HOST));
((struct nvhost_get_param_args *)buf)->value =
priv->ch->desc->syncpts;
break;
case NVHOST_IOCTL_CHANNEL_GET_WAITBASES:
((struct nvhost_get_param_args *)buf)->value =
priv->ch->desc->waitbases;
break;
case NVHOST_IOCTL_CHANNEL_GET_MODMUTEXES:
((struct nvhost_get_param_args *)buf)->value =
priv->ch->desc->modulemutexes;
break;
case NVHOST_IOCTL_CHANNEL_SET_NVMAP_FD:
{
int fd = (int)((struct nvhost_set_nvmap_fd_args *)buf)->fd;
struct nvmap_client *new_client = nvmap_client_get_file(fd);
if (IS_ERR(new_client)) {
err = PTR_ERR(new_client);
break;
}
if (priv->nvmap)
nvmap_client_put(priv->nvmap);
priv->nvmap = new_client;
break;
}
case NVHOST_IOCTL_CHANNEL_READ_3D_REG:
err = nvhost_ioctl_channel_read_3d_reg(priv, (void *)buf);
break;
case NVHOST_IOCTL_CHANNEL_GET_CLK_RATE:
{
unsigned long rate;
struct nvhost_clk_rate_args *arg =
(struct nvhost_clk_rate_args *)buf;
err = nvhost_module_get_rate(priv->ch->dev,
&priv->ch->mod, &rate, 0);
if (err == 0)
arg->rate = rate;
break;
}
case NVHOST_IOCTL_CHANNEL_SET_CLK_RATE:
{
struct nvhost_clk_rate_args *arg =
(struct nvhost_clk_rate_args *)buf;
unsigned long rate = (unsigned long)arg->rate;
err = nvhost_module_set_rate(priv->ch->dev,
&priv->ch->mod, priv, rate, 0);
break;
}
case NVHOST_IOCTL_CHANNEL_SET_TIMEOUT:
priv->timeout =
(u32)((struct nvhost_set_timeout_args *)buf)->timeout;
dev_dbg(&priv->ch->dev->pdev->dev,
"%s: setting buffer timeout (%d ms) for userctx 0x%p\n",
__func__, priv->timeout, priv);
break;
case NVHOST_IOCTL_CHANNEL_GET_TIMEDOUT:
((struct nvhost_get_param_args *)buf)->value =
priv->hwctx->has_timedout;
break;
case NVHOST_IOCTL_CHANNEL_SET_PRIORITY:
priv->priority =
(u32)((struct nvhost_set_priority_args *)buf)->priority;
break;
default:
err = -ENOTTY;
break;
}
if ((err == 0) && (_IOC_DIR(cmd) & _IOC_READ))
err = copy_to_user((void __user *)arg, buf, _IOC_SIZE(cmd));
return err;
}
void nvhost_nvmap_put_mgr(struct mem_mgr *mgr)
{
nvmap_client_put((struct nvmap_client *)mgr);
}