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path: root/drivers/gpu/drm/tegra/vic.c
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Diffstat (limited to 'drivers/gpu/drm/tegra/vic.c')
-rw-r--r--drivers/gpu/drm/tegra/vic.c167
1 files changed, 99 insertions, 68 deletions
diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c
index 1e342fa3d27b..332c9b563d3f 100644
--- a/drivers/gpu/drm/tegra/vic.c
+++ b/drivers/gpu/drm/tegra/vic.c
@@ -10,8 +10,6 @@
#include <linux/iommu.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
@@ -38,6 +36,8 @@ struct vic {
struct clk *clk;
struct reset_control *rst;
+ bool can_use_context;
+
/* Platform configuration */
const struct vic_config *config;
};
@@ -54,41 +54,30 @@ static void vic_writel(struct vic *vic, u32 value, unsigned int offset)
static int vic_boot(struct vic *vic)
{
-#ifdef CONFIG_IOMMU_API
- struct iommu_fwspec *spec = dev_iommu_fwspec_get(vic->dev);
-#endif
- u32 fce_ucode_size, fce_bin_data_offset;
+ u32 fce_ucode_size, fce_bin_data_offset, stream_id;
void *hdr;
int err = 0;
-#ifdef CONFIG_IOMMU_API
- if (vic->config->supports_sid && spec) {
+ if (vic->config->supports_sid && tegra_dev_iommu_get_stream_id(vic->dev, &stream_id)) {
u32 value;
value = TRANSCFG_ATT(1, TRANSCFG_SID_FALCON) |
TRANSCFG_ATT(0, TRANSCFG_SID_HW);
vic_writel(vic, value, VIC_TFBIF_TRANSCFG);
- if (spec->num_ids > 0) {
- value = spec->ids[0] & 0xffff;
-
- /*
- * STREAMID0 is used for input/output buffers.
- * Initialize it to SID_VIC in case context isolation
- * is not enabled, and SID_VIC is used for both firmware
- * and data buffers.
- *
- * If context isolation is enabled, it will be
- * overridden by the SETSTREAMID opcode as part of
- * each job.
- */
- vic_writel(vic, value, VIC_THI_STREAMID0);
-
- /* STREAMID1 is used for firmware loading. */
- vic_writel(vic, value, VIC_THI_STREAMID1);
- }
+ /*
+ * STREAMID0 is used for input/output buffers. Initialize it to SID_VIC in case
+ * context isolation is not enabled, and SID_VIC is used for both firmware and
+ * data buffers.
+ *
+ * If context isolation is enabled, it will be overridden by the SETSTREAMID
+ * opcode as part of each job.
+ */
+ vic_writel(vic, stream_id, VIC_THI_STREAMID0);
+
+ /* STREAMID1 is used for firmware loading. */
+ vic_writel(vic, stream_id, VIC_THI_STREAMID1);
}
-#endif
/* setup clockgating registers */
vic_writel(vic, CG_IDLE_CG_DLY_CNT(4) |
@@ -152,13 +141,9 @@ static int vic_init(struct host1x_client *client)
goto free_channel;
}
- pm_runtime_enable(client->dev);
- pm_runtime_use_autosuspend(client->dev);
- pm_runtime_set_autosuspend_delay(client->dev, 500);
-
err = tegra_drm_register_client(tegra, drm);
if (err < 0)
- goto disable_rpm;
+ goto free_syncpt;
/*
* Inherit the DMA parameters (such as maximum segment size) from the
@@ -168,10 +153,7 @@ static int vic_init(struct host1x_client *client)
return 0;
-disable_rpm:
- pm_runtime_dont_use_autosuspend(client->dev);
- pm_runtime_force_suspend(client->dev);
-
+free_syncpt:
host1x_syncpt_put(client->syncpts[0]);
free_channel:
host1x_channel_put(vic->channel);
@@ -229,28 +211,38 @@ static int vic_load_firmware(struct vic *vic)
{
struct host1x_client *client = &vic->client.base;
struct tegra_drm *tegra = vic->client.drm;
+ static DEFINE_MUTEX(lock);
+ u32 fce_bin_data_offset;
dma_addr_t iova;
size_t size;
void *virt;
int err;
- if (vic->falcon.firmware.virt)
- return 0;
+ mutex_lock(&lock);
+
+ if (vic->falcon.firmware.virt) {
+ err = 0;
+ goto unlock;
+ }
err = falcon_read_firmware(&vic->falcon, vic->config->firmware);
if (err < 0)
- return err;
+ goto unlock;
size = vic->falcon.firmware.size;
if (!client->group) {
virt = dma_alloc_coherent(vic->dev, size, &iova, GFP_KERNEL);
- if (!virt)
- return -ENOMEM;
+ if (!virt) {
+ err = -ENOMEM;
+ goto unlock;
+ }
} else {
virt = tegra_drm_alloc(tegra, size, &iova);
- if (IS_ERR(virt))
- return PTR_ERR(virt);
+ if (IS_ERR(virt)) {
+ err = PTR_ERR(virt);
+ goto unlock;
+ }
}
vic->falcon.firmware.virt = virt;
@@ -277,7 +269,28 @@ static int vic_load_firmware(struct vic *vic)
vic->falcon.firmware.phys = phys;
}
- return 0;
+ /*
+ * Check if firmware is new enough to not require mapping firmware
+ * to data buffer domains.
+ */
+ fce_bin_data_offset = *(u32 *)(virt + VIC_UCODE_FCE_DATA_OFFSET);
+
+ if (!vic->config->supports_sid) {
+ vic->can_use_context = false;
+ } else if (fce_bin_data_offset != 0x0 && fce_bin_data_offset != 0xa5a5a5a5) {
+ /*
+ * Firmware will access FCE through STREAMID0, so context
+ * isolation cannot be used.
+ */
+ vic->can_use_context = false;
+ dev_warn_once(vic->dev, "context isolation disabled due to old firmware\n");
+ } else {
+ vic->can_use_context = true;
+ }
+
+unlock:
+ mutex_unlock(&lock);
+ return err;
cleanup:
if (!client->group)
@@ -285,11 +298,12 @@ cleanup:
else
tegra_drm_free(tegra, size, virt, iova);
+ mutex_unlock(&lock);
return err;
}
-static int vic_runtime_resume(struct device *dev)
+static int __maybe_unused vic_runtime_resume(struct device *dev)
{
struct vic *vic = dev_get_drvdata(dev);
int err;
@@ -323,7 +337,7 @@ disable:
return err;
}
-static int vic_runtime_suspend(struct device *dev)
+static int __maybe_unused vic_runtime_suspend(struct device *dev)
{
struct vic *vic = dev_get_drvdata(dev);
int err;
@@ -358,10 +372,27 @@ static void vic_close_channel(struct tegra_drm_context *context)
host1x_channel_put(context->channel);
}
+static int vic_can_use_memory_ctx(struct tegra_drm_client *client, bool *supported)
+{
+ struct vic *vic = to_vic(client);
+ int err;
+
+ /* This doesn't access HW so it's safe to call without powering up. */
+ err = vic_load_firmware(vic);
+ if (err < 0)
+ return err;
+
+ *supported = vic->can_use_context;
+
+ return 0;
+}
+
static const struct tegra_drm_client_ops vic_ops = {
.open_channel = vic_open_channel,
.close_channel = vic_close_channel,
.submit = tegra_drm_submit,
+ .get_streamid_offset = tegra_drm_get_streamid_offset_thi,
+ .can_use_memory_ctx = vic_can_use_memory_ctx,
};
#define NVIDIA_TEGRA_124_VIC_FIRMWARE "nvidia/tegra124/vic03_ucode.bin"
@@ -396,11 +427,20 @@ static const struct vic_config vic_t194_config = {
.supports_sid = true,
};
+#define NVIDIA_TEGRA_234_VIC_FIRMWARE "nvidia/tegra234/vic.bin"
+
+static const struct vic_config vic_t234_config = {
+ .firmware = NVIDIA_TEGRA_234_VIC_FIRMWARE,
+ .version = 0x23,
+ .supports_sid = true,
+};
+
static const struct of_device_id tegra_vic_of_match[] = {
{ .compatible = "nvidia,tegra124-vic", .data = &vic_t124_config },
{ .compatible = "nvidia,tegra210-vic", .data = &vic_t210_config },
{ .compatible = "nvidia,tegra186-vic", .data = &vic_t186_config },
{ .compatible = "nvidia,tegra194-vic", .data = &vic_t194_config },
+ { .compatible = "nvidia,tegra234-vic", .data = &vic_t234_config },
{ },
};
MODULE_DEVICE_TABLE(of, tegra_vic_of_match);
@@ -409,7 +449,6 @@ static int vic_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct host1x_syncpt **syncpts;
- struct resource *regs;
struct vic *vic;
int err;
@@ -430,13 +469,7 @@ static int vic_probe(struct platform_device *pdev)
if (!syncpts)
return -ENOMEM;
- regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!regs) {
- dev_err(&pdev->dev, "failed to get registers\n");
- return -ENXIO;
- }
-
- vic->regs = devm_ioremap_resource(dev, regs);
+ vic->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(vic->regs))
return PTR_ERR(vic->regs);
@@ -487,6 +520,10 @@ static int vic_probe(struct platform_device *pdev)
goto exit_falcon;
}
+ pm_runtime_enable(dev);
+ pm_runtime_use_autosuspend(dev);
+ pm_runtime_set_autosuspend_delay(dev, 500);
+
return 0;
exit_falcon:
@@ -495,27 +532,18 @@ exit_falcon:
return err;
}
-static int vic_remove(struct platform_device *pdev)
+static void vic_remove(struct platform_device *pdev)
{
struct vic *vic = platform_get_drvdata(pdev);
- int err;
-
- err = host1x_client_unregister(&vic->client.base);
- if (err < 0) {
- dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
- err);
- return err;
- }
+ pm_runtime_disable(&pdev->dev);
+ host1x_client_unregister(&vic->client.base);
falcon_exit(&vic->falcon);
-
- return 0;
}
static const struct dev_pm_ops vic_pm_ops = {
- SET_RUNTIME_PM_OPS(vic_runtime_suspend, vic_runtime_resume, NULL)
- SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
- pm_runtime_force_resume)
+ RUNTIME_PM_OPS(vic_runtime_suspend, vic_runtime_resume, NULL)
+ SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
};
struct platform_driver tegra_vic_driver = {
@@ -540,3 +568,6 @@ MODULE_FIRMWARE(NVIDIA_TEGRA_186_VIC_FIRMWARE);
#if IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC)
MODULE_FIRMWARE(NVIDIA_TEGRA_194_VIC_FIRMWARE);
#endif
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_234_SOC)
+MODULE_FIRMWARE(NVIDIA_TEGRA_234_VIC_FIRMWARE);
+#endif
generated by cgit (git 2.34.1) at 2025-12-25 11:38:52 +0000