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|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2020-2023 Intel Corporation
*/
#include <linux/firmware.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <drm/drm_accel.h>
#include <drm/drm_drv.h>
#include <drm/drm_file.h>
#include <drm/drm_gem.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_prime.h>
#include "vpu_boot_api.h"
#include "ivpu_drv.h"
#include "ivpu_fw.h"
#include "ivpu_gem.h"
#include "ivpu_hw.h"
#include "ivpu_ipc.h"
#include "ivpu_job.h"
#include "ivpu_jsm_msg.h"
#include "ivpu_mmu.h"
#include "ivpu_mmu_context.h"
#include "ivpu_pm.h"
#ifndef DRIVER_VERSION_STR
#define DRIVER_VERSION_STR __stringify(DRM_IVPU_DRIVER_MAJOR) "." \
__stringify(DRM_IVPU_DRIVER_MINOR) "."
#endif
static const struct drm_driver driver;
static struct lock_class_key submitted_jobs_xa_lock_class_key;
int ivpu_dbg_mask;
module_param_named(dbg_mask, ivpu_dbg_mask, int, 0644);
MODULE_PARM_DESC(dbg_mask, "Driver debug mask. See IVPU_DBG_* macros.");
int ivpu_test_mode;
module_param_named_unsafe(test_mode, ivpu_test_mode, int, 0644);
MODULE_PARM_DESC(test_mode, "Test mode: 0 - normal operation, 1 - fw unit test, 2 - null hw");
u8 ivpu_pll_min_ratio;
module_param_named(pll_min_ratio, ivpu_pll_min_ratio, byte, 0644);
MODULE_PARM_DESC(pll_min_ratio, "Minimum PLL ratio used to set VPU frequency");
u8 ivpu_pll_max_ratio = U8_MAX;
module_param_named(pll_max_ratio, ivpu_pll_max_ratio, byte, 0644);
MODULE_PARM_DESC(pll_max_ratio, "Maximum PLL ratio used to set VPU frequency");
struct ivpu_file_priv *ivpu_file_priv_get(struct ivpu_file_priv *file_priv)
{
struct ivpu_device *vdev = file_priv->vdev;
kref_get(&file_priv->ref);
ivpu_dbg(vdev, KREF, "file_priv get: ctx %u refcount %u\n",
file_priv->ctx.id, kref_read(&file_priv->ref));
return file_priv;
}
struct ivpu_file_priv *ivpu_file_priv_get_by_ctx_id(struct ivpu_device *vdev, unsigned long id)
{
struct ivpu_file_priv *file_priv;
xa_lock_irq(&vdev->context_xa);
file_priv = xa_load(&vdev->context_xa, id);
/* file_priv may still be in context_xa during file_priv_release() */
if (file_priv && !kref_get_unless_zero(&file_priv->ref))
file_priv = NULL;
xa_unlock_irq(&vdev->context_xa);
if (file_priv)
ivpu_dbg(vdev, KREF, "file_priv get by id: ctx %u refcount %u\n",
file_priv->ctx.id, kref_read(&file_priv->ref));
return file_priv;
}
static void file_priv_release(struct kref *ref)
{
struct ivpu_file_priv *file_priv = container_of(ref, struct ivpu_file_priv, ref);
struct ivpu_device *vdev = file_priv->vdev;
ivpu_dbg(vdev, FILE, "file_priv release: ctx %u\n", file_priv->ctx.id);
ivpu_cmdq_release_all(file_priv);
ivpu_bo_remove_all_bos_from_context(&file_priv->ctx);
ivpu_jsm_context_release(vdev, file_priv->ctx.id);
ivpu_mmu_user_context_fini(vdev, &file_priv->ctx);
drm_WARN_ON(&vdev->drm, xa_erase_irq(&vdev->context_xa, file_priv->ctx.id) != file_priv);
mutex_destroy(&file_priv->lock);
kfree(file_priv);
}
void ivpu_file_priv_put(struct ivpu_file_priv **link)
{
struct ivpu_file_priv *file_priv = *link;
struct ivpu_device *vdev = file_priv->vdev;
drm_WARN_ON(&vdev->drm, !file_priv);
ivpu_dbg(vdev, KREF, "file_priv put: ctx %u refcount %u\n",
file_priv->ctx.id, kref_read(&file_priv->ref));
*link = NULL;
kref_put(&file_priv->ref, file_priv_release);
}
static int ivpu_get_param_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
{
struct ivpu_file_priv *file_priv = file->driver_priv;
struct ivpu_device *vdev = file_priv->vdev;
struct pci_dev *pdev = to_pci_dev(vdev->drm.dev);
struct drm_ivpu_param *args = data;
int ret = 0;
switch (args->param) {
case DRM_IVPU_PARAM_DEVICE_ID:
args->value = pdev->device;
break;
case DRM_IVPU_PARAM_DEVICE_REVISION:
args->value = pdev->revision;
break;
case DRM_IVPU_PARAM_PLATFORM_TYPE:
args->value = vdev->platform;
break;
case DRM_IVPU_PARAM_CORE_CLOCK_RATE:
args->value = ivpu_hw_reg_pll_freq_get(vdev);
break;
case DRM_IVPU_PARAM_NUM_CONTEXTS:
args->value = ivpu_get_context_count(vdev);
break;
case DRM_IVPU_PARAM_CONTEXT_BASE_ADDRESS:
args->value = vdev->hw->ranges.user_low.start;
break;
case DRM_IVPU_PARAM_CONTEXT_PRIORITY:
args->value = file_priv->priority;
break;
case DRM_IVPU_PARAM_CONTEXT_ID:
args->value = file_priv->ctx.id;
break;
case DRM_IVPU_PARAM_FW_API_VERSION:
if (args->index < VPU_FW_API_VER_NUM) {
struct vpu_firmware_header *fw_hdr;
fw_hdr = (struct vpu_firmware_header *)vdev->fw->file->data;
args->value = fw_hdr->api_version[args->index];
} else {
ret = -EINVAL;
}
break;
case DRM_IVPU_PARAM_ENGINE_HEARTBEAT:
ret = ivpu_jsm_get_heartbeat(vdev, args->index, &args->value);
break;
case DRM_IVPU_PARAM_UNIQUE_INFERENCE_ID:
args->value = (u64)atomic64_inc_return(&vdev->unique_id_counter);
break;
case DRM_IVPU_PARAM_TILE_CONFIG:
args->value = vdev->hw->tile_fuse;
break;
case DRM_IVPU_PARAM_SKU:
args->value = vdev->hw->sku;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int ivpu_set_param_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
{
struct ivpu_file_priv *file_priv = file->driver_priv;
struct drm_ivpu_param *args = data;
int ret = 0;
switch (args->param) {
case DRM_IVPU_PARAM_CONTEXT_PRIORITY:
if (args->value <= DRM_IVPU_CONTEXT_PRIORITY_REALTIME)
file_priv->priority = args->value;
else
ret = -EINVAL;
break;
default:
ret = -EINVAL;
}
return ret;
}
static int ivpu_open(struct drm_device *dev, struct drm_file *file)
{
struct ivpu_device *vdev = to_ivpu_device(dev);
struct ivpu_file_priv *file_priv;
u32 ctx_id;
void *old;
int ret;
ret = xa_alloc_irq(&vdev->context_xa, &ctx_id, NULL, vdev->context_xa_limit, GFP_KERNEL);
if (ret) {
ivpu_err(vdev, "Failed to allocate context id: %d\n", ret);
return ret;
}
file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
if (!file_priv) {
ret = -ENOMEM;
goto err_xa_erase;
}
file_priv->vdev = vdev;
file_priv->priority = DRM_IVPU_CONTEXT_PRIORITY_NORMAL;
kref_init(&file_priv->ref);
mutex_init(&file_priv->lock);
ret = ivpu_mmu_user_context_init(vdev, &file_priv->ctx, ctx_id);
if (ret)
goto err_mutex_destroy;
old = xa_store_irq(&vdev->context_xa, ctx_id, file_priv, GFP_KERNEL);
if (xa_is_err(old)) {
ret = xa_err(old);
ivpu_err(vdev, "Failed to store context %u: %d\n", ctx_id, ret);
goto err_ctx_fini;
}
ivpu_dbg(vdev, FILE, "file_priv create: ctx %u process %s pid %d\n",
ctx_id, current->comm, task_pid_nr(current));
file->driver_priv = file_priv;
return 0;
err_ctx_fini:
ivpu_mmu_user_context_fini(vdev, &file_priv->ctx);
err_mutex_destroy:
mutex_destroy(&file_priv->lock);
kfree(file_priv);
err_xa_erase:
xa_erase_irq(&vdev->context_xa, ctx_id);
return ret;
}
static void ivpu_postclose(struct drm_device *dev, struct drm_file *file)
{
struct ivpu_file_priv *file_priv = file->driver_priv;
struct ivpu_device *vdev = to_ivpu_device(dev);
ivpu_dbg(vdev, FILE, "file_priv close: ctx %u process %s pid %d\n",
file_priv->ctx.id, current->comm, task_pid_nr(current));
ivpu_file_priv_put(&file_priv);
}
static const struct drm_ioctl_desc ivpu_drm_ioctls[] = {
DRM_IOCTL_DEF_DRV(IVPU_GET_PARAM, ivpu_get_param_ioctl, 0),
DRM_IOCTL_DEF_DRV(IVPU_SET_PARAM, ivpu_set_param_ioctl, 0),
DRM_IOCTL_DEF_DRV(IVPU_BO_CREATE, ivpu_bo_create_ioctl, 0),
DRM_IOCTL_DEF_DRV(IVPU_BO_INFO, ivpu_bo_info_ioctl, 0),
DRM_IOCTL_DEF_DRV(IVPU_SUBMIT, ivpu_submit_ioctl, 0),
DRM_IOCTL_DEF_DRV(IVPU_BO_WAIT, ivpu_bo_wait_ioctl, 0),
};
static int ivpu_wait_for_ready(struct ivpu_device *vdev)
{
struct ivpu_ipc_consumer cons;
struct ivpu_ipc_hdr ipc_hdr;
unsigned long timeout;
int ret;
if (ivpu_test_mode == IVPU_TEST_MODE_FW_TEST)
return 0;
ivpu_ipc_consumer_add(vdev, &cons, IVPU_IPC_CHAN_BOOT_MSG);
timeout = jiffies + msecs_to_jiffies(vdev->timeout.boot);
while (1) {
ret = ivpu_ipc_irq_handler(vdev);
if (ret)
break;
ret = ivpu_ipc_receive(vdev, &cons, &ipc_hdr, NULL, 0);
if (ret != -ETIMEDOUT || time_after_eq(jiffies, timeout))
break;
cond_resched();
}
ivpu_ipc_consumer_del(vdev, &cons);
if (!ret && ipc_hdr.data_addr != IVPU_IPC_BOOT_MSG_DATA_ADDR) {
ivpu_err(vdev, "Invalid VPU ready message: 0x%x\n",
ipc_hdr.data_addr);
return -EIO;
}
if (!ret)
ivpu_info(vdev, "VPU ready message received successfully\n");
else
ivpu_hw_diagnose_failure(vdev);
return ret;
}
/**
* ivpu_boot() - Start VPU firmware
* @vdev: VPU device
*
* This function is paired with ivpu_shutdown() but it doesn't power up the
* VPU because power up has to be called very early in ivpu_probe().
*/
int ivpu_boot(struct ivpu_device *vdev)
{
int ret;
/* Update boot params located at first 4KB of FW memory */
ivpu_fw_boot_params_setup(vdev, vdev->fw->mem->kvaddr);
ret = ivpu_hw_boot_fw(vdev);
if (ret) {
ivpu_err(vdev, "Failed to start the firmware: %d\n", ret);
return ret;
}
ret = ivpu_wait_for_ready(vdev);
if (ret) {
ivpu_err(vdev, "Failed to boot the firmware: %d\n", ret);
return ret;
}
ivpu_hw_irq_clear(vdev);
enable_irq(vdev->irq);
ivpu_hw_irq_enable(vdev);
ivpu_ipc_enable(vdev);
return 0;
}
int ivpu_shutdown(struct ivpu_device *vdev)
{
int ret;
ivpu_hw_irq_disable(vdev);
disable_irq(vdev->irq);
ivpu_ipc_disable(vdev);
ivpu_mmu_disable(vdev);
ret = ivpu_hw_power_down(vdev);
if (ret)
ivpu_warn(vdev, "Failed to power down HW: %d\n", ret);
return ret;
}
static const struct file_operations ivpu_fops = {
.owner = THIS_MODULE,
DRM_ACCEL_FOPS,
};
static const struct drm_driver driver = {
.driver_features = DRIVER_GEM | DRIVER_COMPUTE_ACCEL,
.open = ivpu_open,
.postclose = ivpu_postclose,
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_import = ivpu_gem_prime_import,
.gem_prime_mmap = drm_gem_prime_mmap,
.ioctls = ivpu_drm_ioctls,
.num_ioctls = ARRAY_SIZE(ivpu_drm_ioctls),
.fops = &ivpu_fops,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRM_IVPU_DRIVER_MAJOR,
.minor = DRM_IVPU_DRIVER_MINOR,
};
static int ivpu_irq_init(struct ivpu_device *vdev)
{
struct pci_dev *pdev = to_pci_dev(vdev->drm.dev);
int ret;
ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI | PCI_IRQ_MSIX);
if (ret < 0) {
ivpu_err(vdev, "Failed to allocate a MSI IRQ: %d\n", ret);
return ret;
}
vdev->irq = pci_irq_vector(pdev, 0);
ret = devm_request_irq(vdev->drm.dev, vdev->irq, vdev->hw->ops->irq_handler,
IRQF_NO_AUTOEN, DRIVER_NAME, vdev);
if (ret)
ivpu_err(vdev, "Failed to request an IRQ %d\n", ret);
return ret;
}
static int ivpu_pci_init(struct ivpu_device *vdev)
{
struct pci_dev *pdev = to_pci_dev(vdev->drm.dev);
struct resource *bar0 = &pdev->resource[0];
struct resource *bar4 = &pdev->resource[4];
int ret;
ivpu_dbg(vdev, MISC, "Mapping BAR0 (RegV) %pR\n", bar0);
vdev->regv = devm_ioremap_resource(vdev->drm.dev, bar0);
if (IS_ERR(vdev->regv)) {
ivpu_err(vdev, "Failed to map bar 0: %pe\n", vdev->regv);
return PTR_ERR(vdev->regv);
}
ivpu_dbg(vdev, MISC, "Mapping BAR4 (RegB) %pR\n", bar4);
vdev->regb = devm_ioremap_resource(vdev->drm.dev, bar4);
if (IS_ERR(vdev->regb)) {
ivpu_err(vdev, "Failed to map bar 4: %pe\n", vdev->regb);
return PTR_ERR(vdev->regb);
}
ret = dma_set_mask_and_coherent(vdev->drm.dev, DMA_BIT_MASK(38));
if (ret) {
ivpu_err(vdev, "Failed to set DMA mask: %d\n", ret);
return ret;
}
dma_set_max_seg_size(vdev->drm.dev, UINT_MAX);
/* Clear any pending errors */
pcie_capability_clear_word(pdev, PCI_EXP_DEVSTA, 0x3f);
ret = pcim_enable_device(pdev);
if (ret) {
ivpu_err(vdev, "Failed to enable PCI device: %d\n", ret);
return ret;
}
pci_set_master(pdev);
return 0;
}
static int ivpu_dev_init(struct ivpu_device *vdev)
{
int ret;
vdev->hw = drmm_kzalloc(&vdev->drm, sizeof(*vdev->hw), GFP_KERNEL);
if (!vdev->hw)
return -ENOMEM;
vdev->mmu = drmm_kzalloc(&vdev->drm, sizeof(*vdev->mmu), GFP_KERNEL);
if (!vdev->mmu)
return -ENOMEM;
vdev->fw = drmm_kzalloc(&vdev->drm, sizeof(*vdev->fw), GFP_KERNEL);
if (!vdev->fw)
return -ENOMEM;
vdev->ipc = drmm_kzalloc(&vdev->drm, sizeof(*vdev->ipc), GFP_KERNEL);
if (!vdev->ipc)
return -ENOMEM;
vdev->pm = drmm_kzalloc(&vdev->drm, sizeof(*vdev->pm), GFP_KERNEL);
if (!vdev->pm)
return -ENOMEM;
vdev->hw->ops = &ivpu_hw_mtl_ops;
vdev->platform = IVPU_PLATFORM_INVALID;
vdev->context_xa_limit.min = IVPU_GLOBAL_CONTEXT_MMU_SSID + 1;
vdev->context_xa_limit.max = IVPU_CONTEXT_LIMIT;
atomic64_set(&vdev->unique_id_counter, 0);
xa_init_flags(&vdev->context_xa, XA_FLAGS_ALLOC);
xa_init_flags(&vdev->submitted_jobs_xa, XA_FLAGS_ALLOC1);
lockdep_set_class(&vdev->submitted_jobs_xa.xa_lock, &submitted_jobs_xa_lock_class_key);
ret = ivpu_pci_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize PCI device: %d\n", ret);
goto err_xa_destroy;
}
ret = ivpu_irq_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize IRQs: %d\n", ret);
goto err_xa_destroy;
}
/* Init basic HW info based on buttress registers which are accessible before power up */
ret = ivpu_hw_info_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize HW info: %d\n", ret);
goto err_xa_destroy;
}
/* Power up early so the rest of init code can access VPU registers */
ret = ivpu_hw_power_up(vdev);
if (ret) {
ivpu_err(vdev, "Failed to power up HW: %d\n", ret);
goto err_xa_destroy;
}
ret = ivpu_mmu_global_context_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize global MMU context: %d\n", ret);
goto err_power_down;
}
ret = ivpu_mmu_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize MMU device: %d\n", ret);
goto err_mmu_gctx_fini;
}
ret = ivpu_fw_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize firmware: %d\n", ret);
goto err_mmu_gctx_fini;
}
ret = ivpu_ipc_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize IPC: %d\n", ret);
goto err_fw_fini;
}
ret = ivpu_pm_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize PM: %d\n", ret);
goto err_ipc_fini;
}
ret = ivpu_job_done_thread_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize job done thread: %d\n", ret);
goto err_ipc_fini;
}
ret = ivpu_fw_load(vdev);
if (ret) {
ivpu_err(vdev, "Failed to load firmware: %d\n", ret);
goto err_job_done_thread_fini;
}
ret = ivpu_boot(vdev);
if (ret) {
ivpu_err(vdev, "Failed to boot: %d\n", ret);
goto err_job_done_thread_fini;
}
ivpu_pm_enable(vdev);
return 0;
err_job_done_thread_fini:
ivpu_job_done_thread_fini(vdev);
err_ipc_fini:
ivpu_ipc_fini(vdev);
err_fw_fini:
ivpu_fw_fini(vdev);
err_mmu_gctx_fini:
ivpu_mmu_global_context_fini(vdev);
err_power_down:
ivpu_hw_power_down(vdev);
err_xa_destroy:
xa_destroy(&vdev->submitted_jobs_xa);
xa_destroy(&vdev->context_xa);
return ret;
}
static void ivpu_dev_fini(struct ivpu_device *vdev)
{
ivpu_pm_disable(vdev);
ivpu_shutdown(vdev);
ivpu_job_done_thread_fini(vdev);
ivpu_ipc_fini(vdev);
ivpu_fw_fini(vdev);
ivpu_mmu_global_context_fini(vdev);
drm_WARN_ON(&vdev->drm, !xa_empty(&vdev->submitted_jobs_xa));
xa_destroy(&vdev->submitted_jobs_xa);
drm_WARN_ON(&vdev->drm, !xa_empty(&vdev->context_xa));
xa_destroy(&vdev->context_xa);
}
static struct pci_device_id ivpu_pci_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_MTL) },
{ }
};
MODULE_DEVICE_TABLE(pci, ivpu_pci_ids);
static int ivpu_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct ivpu_device *vdev;
int ret;
vdev = devm_drm_dev_alloc(&pdev->dev, &driver, struct ivpu_device, drm);
if (IS_ERR(vdev))
return PTR_ERR(vdev);
pci_set_drvdata(pdev, vdev);
ret = ivpu_dev_init(vdev);
if (ret) {
dev_err(&pdev->dev, "Failed to initialize VPU device: %d\n", ret);
return ret;
}
ret = drm_dev_register(&vdev->drm, 0);
if (ret) {
dev_err(&pdev->dev, "Failed to register DRM device: %d\n", ret);
ivpu_dev_fini(vdev);
}
return ret;
}
static void ivpu_remove(struct pci_dev *pdev)
{
struct ivpu_device *vdev = pci_get_drvdata(pdev);
drm_dev_unregister(&vdev->drm);
ivpu_dev_fini(vdev);
}
static const struct dev_pm_ops ivpu_drv_pci_pm = {
SET_SYSTEM_SLEEP_PM_OPS(ivpu_pm_suspend_cb, ivpu_pm_resume_cb)
SET_RUNTIME_PM_OPS(ivpu_pm_runtime_suspend_cb, ivpu_pm_runtime_resume_cb, NULL)
};
static const struct pci_error_handlers ivpu_drv_pci_err = {
.reset_prepare = ivpu_pm_reset_prepare_cb,
.reset_done = ivpu_pm_reset_done_cb,
};
static struct pci_driver ivpu_pci_driver = {
.name = KBUILD_MODNAME,
.id_table = ivpu_pci_ids,
.probe = ivpu_probe,
.remove = ivpu_remove,
.driver = {
.pm = &ivpu_drv_pci_pm,
},
.err_handler = &ivpu_drv_pci_err,
};
module_pci_driver(ivpu_pci_driver);
MODULE_AUTHOR("Intel Corporation");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL and additional rights");
MODULE_VERSION(DRIVER_VERSION_STR);
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