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path: root/drivers/video/tegra/host/dev.c
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Diffstat (limited to 'drivers/video/tegra/host/dev.c')
-rw-r--r--drivers/video/tegra/host/dev.c119
1 files changed, 90 insertions, 29 deletions
diff --git a/drivers/video/tegra/host/dev.c b/drivers/video/tegra/host/dev.c
index 8b577cc9045f..fdbf5cc8efc1 100644
--- a/drivers/video/tegra/host/dev.c
+++ b/drivers/video/tegra/host/dev.c
@@ -46,10 +46,7 @@ static int nvhost_minor = NVHOST_CHANNEL_BASE;
struct nvhost_channel_userctx {
struct nvhost_channel *ch;
struct nvhost_hwctx *hwctx;
- u32 syncpt_id;
- u32 syncpt_incrs;
- u32 cmdbufs_pending;
- u32 relocs_pending;
+ struct nvhost_submit_hdr_ext hdr;
struct nvmap_handle_ref *gather_mem;
struct nvhost_op_pair *gathers;
int num_gathers;
@@ -57,6 +54,8 @@ struct nvhost_channel_userctx {
struct nvmap_pinarray_elem pinarray[NVHOST_MAX_HANDLES];
struct nvmap_handle *unpinarray[NVHOST_MAX_HANDLES];
struct nvmap_client *nvmap;
+ struct nvhost_waitchk waitchks[NVHOST_MAX_WAIT_CHECKS];
+ u32 num_waitchks;
};
struct nvhost_ctrl_userctx {
@@ -137,10 +136,25 @@ static void add_gather(struct nvhost_channel_userctx *ctx, int idx,
ctx->gathers[idx].op1 = nvhost_opcode_gather(0, words);
}
+static int set_submit(struct nvhost_channel_userctx *ctx)
+{
+ int err = 0;
+
+ /* submit should have at least 1 cmdbuf */
+ if (!ctx->hdr.num_cmdbufs)
+ return -EFAULT;
+
+ /* leave room for ctx switch */
+ ctx->num_gathers = 2;
+ ctx->pinarray_size = 0;
+ return err;
+}
+
static void reset_submit(struct nvhost_channel_userctx *ctx)
{
- ctx->cmdbufs_pending = 0;
- ctx->relocs_pending = 0;
+ ctx->hdr.num_cmdbufs = 0;
+ ctx->hdr.num_relocs = 0;
+ ctx->hdr.num_waitchks = 0;
}
static ssize_t nvhost_channelwrite(struct file *filp, const char __user *buf,
@@ -152,22 +166,19 @@ static ssize_t nvhost_channelwrite(struct file *filp, const char __user *buf,
while (remaining) {
size_t consumed;
- if (!priv->relocs_pending && !priv->cmdbufs_pending) {
+ if (!priv->hdr.num_relocs && !priv->hdr.num_cmdbufs && !priv->hdr.num_waitchks) {
consumed = sizeof(struct nvhost_submit_hdr);
if (remaining < consumed)
break;
- if (copy_from_user(&priv->syncpt_id, buf, consumed)) {
+ if (copy_from_user(&priv->hdr, buf, consumed)) {
err = -EFAULT;
break;
}
- if (!priv->cmdbufs_pending) {
- err = -EFAULT;
+ BUG_ON(priv->hdr.submit_version != NVHOST_SUBMIT_VERSION_V0);
+ err = set_submit(priv);
+ if (err)
break;
- }
- /* leave room for ctx switch */
- priv->num_gathers = 2;
- priv->pinarray_size = 0;
- } else if (priv->cmdbufs_pending) {
+ } else if (priv->hdr.num_cmdbufs) {
struct nvhost_cmdbuf cmdbuf;
consumed = sizeof(cmdbuf);
if (remaining < consumed)
@@ -178,12 +189,12 @@ static ssize_t nvhost_channelwrite(struct file *filp, const char __user *buf,
}
add_gather(priv, priv->num_gathers++,
cmdbuf.mem, cmdbuf.words, cmdbuf.offset);
- priv->cmdbufs_pending--;
- } else if (priv->relocs_pending) {
+ priv->hdr.num_cmdbufs--;
+ } else if (priv->hdr.num_relocs) {
int numrelocs = remaining / sizeof(struct nvhost_reloc);
if (!numrelocs)
break;
- numrelocs = min_t(int, numrelocs, priv->relocs_pending);
+ numrelocs = min_t(int, numrelocs, priv->hdr.num_relocs);
consumed = numrelocs * sizeof(struct nvhost_reloc);
if (copy_from_user(&priv->pinarray[priv->pinarray_size],
buf, consumed)) {
@@ -191,7 +202,19 @@ static ssize_t nvhost_channelwrite(struct file *filp, const char __user *buf,
break;
}
priv->pinarray_size += numrelocs;
- priv->relocs_pending -= numrelocs;
+ priv->hdr.num_relocs -= numrelocs;
+ } else if (priv->hdr.num_waitchks) {
+ struct nvhost_waitchk *waitp;
+ consumed = sizeof(struct nvhost_waitchk);
+ if (remaining < consumed)
+ break;
+ waitp = &priv->waitchks[priv->num_waitchks];
+ if (copy_from_user(waitp, buf, consumed)) {
+ err = -EFAULT;
+ break;
+ }
+ priv->num_waitchks++;
+ priv->hdr.num_waitchks--;
} else {
err = -EFAULT;
break;
@@ -219,9 +242,9 @@ static int nvhost_ioctl_channel_flush(struct nvhost_channel_userctx *ctx,
u32 syncval;
int num_unpin;
int err;
- int nulled_incrs = null_kickoff ? ctx->syncpt_incrs : 0;
+ int nulled_incrs = null_kickoff ? ctx->hdr.syncpt_incrs : 0;
- if (ctx->relocs_pending || ctx->cmdbufs_pending) {
+ if (ctx->hdr.num_relocs || ctx->hdr.num_cmdbufs || ctx->hdr.num_waitchks) {
reset_submit(ctx);
dev_err(&ctx->ch->dev->pdev->dev, "channel submit out of sync\n");
return -EFAULT;
@@ -256,6 +279,22 @@ static int nvhost_ioctl_channel_flush(struct nvhost_channel_userctx *ctx,
return err;
}
+ /* remove stale waits */
+ if (ctx->num_waitchks) {
+ err = nvhost_syncpt_wait_check(ctx->nvmap,
+ &ctx->ch->dev->syncpt, ctx->hdr.waitchk_mask,
+ ctx->waitchks, ctx->num_waitchks);
+ if (err) {
+ dev_warn(&ctx->ch->dev->pdev->dev,
+ "nvhost_syncpt_wait_check failed: %d\n", err);
+ mutex_unlock(&ctx->ch->submitlock);
+ nvmap_unpin_handles(ctx->nvmap, ctx->unpinarray, num_unpin);
+ nvhost_module_idle(&ctx->ch->mod);
+ return err;
+ }
+ ctx->num_waitchks = 0;
+ }
+
/* context switch */
if (ctx->ch->cur_ctx != ctx->hwctx) {
struct nvhost_hwctx *hw = ctx->hwctx;
@@ -264,7 +303,7 @@ static int nvhost_ioctl_channel_flush(struct nvhost_channel_userctx *ctx,
ctx->gathers[gather_idx].op1 =
nvhost_opcode_gather(0, hw->restore_size);
ctx->gathers[gather_idx].op2 = hw->restore_phys;
- ctx->syncpt_incrs += hw->restore_incrs;
+ ctx->hdr.syncpt_incrs += hw->restore_incrs;
}
hw = ctx->ch->cur_ctx;
if (hw) {
@@ -272,7 +311,7 @@ static int nvhost_ioctl_channel_flush(struct nvhost_channel_userctx *ctx,
ctx->gathers[gather_idx].op1 =
nvhost_opcode_gather(0, hw->save_size);
ctx->gathers[gather_idx].op2 = hw->save_phys;
- ctx->syncpt_incrs += hw->save_incrs;
+ ctx->hdr.syncpt_incrs += hw->save_incrs;
num_intrs = 1;
ctxsw.syncpt_val = hw->save_incrs - 1;
ctxsw.intr_data = hw;
@@ -291,24 +330,24 @@ static int nvhost_ioctl_channel_flush(struct nvhost_channel_userctx *ctx,
}
/* get absolute sync value */
- if (BIT(ctx->syncpt_id) & NVSYNCPTS_CLIENT_MANAGED)
+ if (BIT(ctx->hdr.syncpt_id) & NVSYNCPTS_CLIENT_MANAGED)
syncval = nvhost_syncpt_set_max(&ctx->ch->dev->syncpt,
- ctx->syncpt_id, ctx->syncpt_incrs);
+ ctx->hdr.syncpt_id, ctx->hdr.syncpt_incrs);
else
syncval = nvhost_syncpt_incr_max(&ctx->ch->dev->syncpt,
- ctx->syncpt_id, ctx->syncpt_incrs);
+ ctx->hdr.syncpt_id, ctx->hdr.syncpt_incrs);
/* patch absolute syncpt value into interrupt triggers */
- ctxsw.syncpt_val += syncval - ctx->syncpt_incrs;
+ ctxsw.syncpt_val += syncval - ctx->hdr.syncpt_incrs;
nvhost_channel_submit(ctx->ch, ctx->nvmap, &ctx->gathers[gather_idx],
(null_kickoff ? 2 : ctx->num_gathers) - gather_idx, &ctxsw, num_intrs,
ctx->unpinarray, num_unpin,
- ctx->syncpt_id, syncval,
+ ctx->hdr.syncpt_id, syncval,
nulled_incrs);
/* schedule a submit complete interrupt */
- nvhost_intr_add_action(&ctx->ch->dev->intr, ctx->syncpt_id, syncval,
+ nvhost_intr_add_action(&ctx->ch->dev->intr, ctx->hdr.syncpt_id, syncval,
NVHOST_INTR_ACTION_SUBMIT_COMPLETE, ctx->ch, NULL);
mutex_unlock(&ctx->ch->submitlock);
@@ -342,7 +381,29 @@ static long nvhost_channelctl(struct file *filp,
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 = (struct nvhost_submit_hdr_ext *)buf;
+
+ if (priv->hdr.num_relocs || 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 = -EFAULT;
+ break;
+ }
+ 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);
+ 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;
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-28 07:55:45 +0000