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path: root/drivers/dma/idxd/init.c
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Diffstat (limited to 'drivers/dma/idxd/init.c')
-rw-r--r--drivers/dma/idxd/init.c93
1 files changed, 84 insertions, 9 deletions
diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
index 640d3048368e..1aa823974cda 100644
--- a/drivers/dma/idxd/init.c
+++ b/drivers/dma/idxd/init.c
@@ -9,7 +9,6 @@
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/workqueue.h>
-#include <linux/aer.h>
#include <linux/fs.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/device.h>
@@ -47,6 +46,9 @@ static struct idxd_driver_data idxd_driver_data[] = {
.compl_size = sizeof(struct dsa_completion_record),
.align = 32,
.dev_type = &dsa_device_type,
+ .evl_cr_off = offsetof(struct dsa_evl_entry, cr),
+ .cr_status_off = offsetof(struct dsa_completion_record, status),
+ .cr_result_off = offsetof(struct dsa_completion_record, result),
},
[IDXD_TYPE_IAX] = {
.name_prefix = "iax",
@@ -54,6 +56,9 @@ static struct idxd_driver_data idxd_driver_data[] = {
.compl_size = sizeof(struct iax_completion_record),
.align = 64,
.dev_type = &iax_device_type,
+ .evl_cr_off = offsetof(struct iax_evl_entry, cr),
+ .cr_status_off = offsetof(struct iax_completion_record, status),
+ .cr_result_off = offsetof(struct iax_completion_record, error_code),
},
};
@@ -105,7 +110,7 @@ static int idxd_setup_interrupts(struct idxd_device *idxd)
ie = idxd_get_ie(idxd, msix_idx);
ie->id = msix_idx;
ie->int_handle = INVALID_INT_HANDLE;
- ie->pasid = INVALID_IOASID;
+ ie->pasid = IOMMU_PASID_INVALID;
spin_lock_init(&ie->list_lock);
init_llist_head(&ie->pending_llist);
@@ -200,6 +205,8 @@ static int idxd_setup_wqs(struct idxd_device *idxd)
}
bitmap_copy(wq->opcap_bmap, idxd->opcap_bmap, IDXD_MAX_OPCAP_BITS);
}
+ mutex_init(&wq->uc_lock);
+ xa_init(&wq->upasid_xa);
idxd->wqs[i] = wq;
}
@@ -332,6 +339,33 @@ static void idxd_cleanup_internals(struct idxd_device *idxd)
destroy_workqueue(idxd->wq);
}
+static int idxd_init_evl(struct idxd_device *idxd)
+{
+ struct device *dev = &idxd->pdev->dev;
+ struct idxd_evl *evl;
+
+ if (idxd->hw.gen_cap.evl_support == 0)
+ return 0;
+
+ evl = kzalloc_node(sizeof(*evl), GFP_KERNEL, dev_to_node(dev));
+ if (!evl)
+ return -ENOMEM;
+
+ spin_lock_init(&evl->lock);
+ evl->size = IDXD_EVL_SIZE_MIN;
+
+ idxd->evl_cache = kmem_cache_create(dev_name(idxd_confdev(idxd)),
+ sizeof(struct idxd_evl_fault) + evl_ent_size(idxd),
+ 0, 0, NULL);
+ if (!idxd->evl_cache) {
+ kfree(evl);
+ return -ENOMEM;
+ }
+
+ idxd->evl = evl;
+ return 0;
+}
+
static int idxd_setup_internals(struct idxd_device *idxd)
{
struct device *dev = &idxd->pdev->dev;
@@ -357,8 +391,14 @@ static int idxd_setup_internals(struct idxd_device *idxd)
goto err_wkq_create;
}
+ rc = idxd_init_evl(idxd);
+ if (rc < 0)
+ goto err_evl;
+
return 0;
+ err_evl:
+ destroy_workqueue(idxd->wq);
err_wkq_create:
for (i = 0; i < idxd->max_groups; i++)
put_device(group_confdev(idxd->groups[i]));
@@ -389,7 +429,7 @@ static void idxd_read_table_offsets(struct idxd_device *idxd)
dev_dbg(dev, "IDXD Perfmon Offset: %#x\n", idxd->perfmon_offset);
}
-static void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count)
+void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count)
{
int i, j, nr;
@@ -461,6 +501,10 @@ static void idxd_read_caps(struct idxd_device *idxd)
dev_dbg(dev, "opcap[%d]: %#llx\n", i, idxd->hw.opcap.bits[i]);
}
multi_u64_to_bmap(idxd->opcap_bmap, &idxd->hw.opcap.bits[0], 4);
+
+ /* read iaa cap */
+ if (idxd->data->type == IDXD_TYPE_IAX && idxd->hw.version >= DEVICE_VERSION_2)
+ idxd->hw.iaa_cap.bits = ioread64(idxd->reg_base + IDXD_IAACAP_OFFSET);
}
static struct idxd_device *idxd_alloc(struct pci_dev *pdev, struct idxd_driver_data *data)
@@ -516,6 +560,27 @@ static void idxd_disable_system_pasid(struct idxd_device *idxd)
idxd->sva = NULL;
}
+static int idxd_enable_sva(struct pci_dev *pdev)
+{
+ int ret;
+
+ ret = iommu_dev_enable_feature(&pdev->dev, IOMMU_DEV_FEAT_IOPF);
+ if (ret)
+ return ret;
+
+ ret = iommu_dev_enable_feature(&pdev->dev, IOMMU_DEV_FEAT_SVA);
+ if (ret)
+ iommu_dev_disable_feature(&pdev->dev, IOMMU_DEV_FEAT_IOPF);
+
+ return ret;
+}
+
+static void idxd_disable_sva(struct pci_dev *pdev)
+{
+ iommu_dev_disable_feature(&pdev->dev, IOMMU_DEV_FEAT_SVA);
+ iommu_dev_disable_feature(&pdev->dev, IOMMU_DEV_FEAT_IOPF);
+}
+
static int idxd_probe(struct idxd_device *idxd)
{
struct pci_dev *pdev = idxd->pdev;
@@ -530,7 +595,7 @@ static int idxd_probe(struct idxd_device *idxd)
dev_dbg(dev, "IDXD reset complete\n");
if (IS_ENABLED(CONFIG_INTEL_IDXD_SVM) && sva) {
- if (iommu_dev_enable_feature(dev, IOMMU_DEV_FEAT_SVA)) {
+ if (idxd_enable_sva(pdev)) {
dev_warn(dev, "Unable to turn on user SVA feature.\n");
} else {
set_bit(IDXD_FLAG_USER_PASID_ENABLED, &idxd->flags);
@@ -578,21 +643,19 @@ static int idxd_probe(struct idxd_device *idxd)
if (device_pasid_enabled(idxd))
idxd_disable_system_pasid(idxd);
if (device_user_pasid_enabled(idxd))
- iommu_dev_disable_feature(dev, IOMMU_DEV_FEAT_SVA);
+ idxd_disable_sva(pdev);
return rc;
}
static void idxd_cleanup(struct idxd_device *idxd)
{
- struct device *dev = &idxd->pdev->dev;
-
perfmon_pmu_remove(idxd);
idxd_cleanup_interrupts(idxd);
idxd_cleanup_internals(idxd);
if (device_pasid_enabled(idxd))
idxd_disable_system_pasid(idxd);
if (device_user_pasid_enabled(idxd))
- iommu_dev_disable_feature(dev, IOMMU_DEV_FEAT_SVA);
+ idxd_disable_sva(idxd->pdev);
}
static int idxd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
@@ -642,6 +705,10 @@ static int idxd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto err_dev_register;
}
+ rc = idxd_device_init_debugfs(idxd);
+ if (rc)
+ dev_warn(dev, "IDXD debugfs failed to setup\n");
+
dev_info(&pdev->dev, "Intel(R) Accelerator Device (v%x)\n",
idxd->hw.version);
@@ -704,13 +771,14 @@ static void idxd_remove(struct pci_dev *pdev)
idxd_shutdown(pdev);
if (device_pasid_enabled(idxd))
idxd_disable_system_pasid(idxd);
+ idxd_device_remove_debugfs(idxd);
irq_entry = idxd_get_ie(idxd, 0);
free_irq(irq_entry->vector, irq_entry);
pci_free_irq_vectors(pdev);
pci_iounmap(pdev, idxd->reg_base);
if (device_user_pasid_enabled(idxd))
- iommu_dev_disable_feature(&pdev->dev, IOMMU_DEV_FEAT_SVA);
+ idxd_disable_sva(pdev);
pci_disable_device(pdev);
destroy_workqueue(idxd->wq);
perfmon_pmu_remove(idxd);
@@ -761,6 +829,10 @@ static int __init idxd_init_module(void)
if (err)
goto err_cdev_register;
+ err = idxd_init_debugfs();
+ if (err)
+ goto err_debugfs;
+
err = pci_register_driver(&idxd_pci_driver);
if (err)
goto err_pci_register;
@@ -768,6 +840,8 @@ static int __init idxd_init_module(void)
return 0;
err_pci_register:
+ idxd_remove_debugfs();
+err_debugfs:
idxd_cdev_remove();
err_cdev_register:
idxd_driver_unregister(&idxd_user_drv);
@@ -788,5 +862,6 @@ static void __exit idxd_exit_module(void)
pci_unregister_driver(&idxd_pci_driver);
idxd_cdev_remove();
perfmon_exit();
+ idxd_remove_debugfs();
}
module_exit(idxd_exit_module);
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-03 04:07:30 +0100