return container_of(r, struct rdt_hw_resource, r_resctrl);
}
-int parse_cbm(struct rdt_parse_data *data, struct resctrl_schema *s,
- struct rdt_ctrl_domain *d);
-int parse_bw(struct rdt_parse_data *data, struct resctrl_schema *s,
- struct rdt_ctrl_domain *d);
-
extern struct mutex rdtgroup_mutex;
+ static inline const char *rdt_kn_name(const struct kernfs_node *kn)
+ {
+ return rcu_dereference_check(kn->name, lockdep_is_held(&rdtgroup_mutex));
+ }
+
extern struct rdt_hw_resource rdt_resources_all[];
extern struct rdtgroup rdtgroup_default;
extern struct dentry *debugfs_resctrl;
static int rdt_default_ctrl_show(struct kernfs_open_file *of,
struct seq_file *seq, void *v)
{
- struct resctrl_schema *s = of->kn->parent->priv;
+ struct resctrl_schema *s = rdt_kn_parent_priv(of->kn);
struct rdt_resource *r = s->res;
- seq_printf(seq, "%x\n", r->default_ctrl);
+ seq_printf(seq, "%x\n", resctrl_get_default_ctrl(r));
return 0;
}
static int rdt_thread_throttle_mode_show(struct kernfs_open_file *of,
struct seq_file *seq, void *v)
{
- struct resctrl_schema *s = of->kn->parent->priv;
+ struct resctrl_schema *s = rdt_kn_parent_priv(of->kn);
struct rdt_resource *r = s->res;
- if (r->membw.throttle_mode == THREAD_THROTTLE_PER_THREAD)
+ switch (r->membw.throttle_mode) {
+ case THREAD_THROTTLE_PER_THREAD:
seq_puts(seq, "per-thread\n");
- else
+ return 0;
+ case THREAD_THROTTLE_MAX:
seq_puts(seq, "max\n");
+ return 0;
+ case THREAD_THROTTLE_UNDEFINED:
+ seq_puts(seq, "undefined\n");
+ return 0;
+ }
+
+ WARN_ON_ONCE(1);
return 0;
}
static DEVICE_ATTR(pcie_replay_count, 0444,
amdgpu_device_get_pcie_replay_count, NULL);
+static int amdgpu_device_attr_sysfs_init(struct amdgpu_device *adev)
+{
+ int ret = 0;
+
+ if (!amdgpu_sriov_vf(adev))
+ ret = sysfs_create_file(&adev->dev->kobj,
+ &dev_attr_pcie_replay_count.attr);
+
+ return ret;
+}
+
+static void amdgpu_device_attr_sysfs_fini(struct amdgpu_device *adev)
+{
+ if (!amdgpu_sriov_vf(adev))
+ sysfs_remove_file(&adev->dev->kobj,
+ &dev_attr_pcie_replay_count.attr);
+}
+
static ssize_t amdgpu_sysfs_reg_state_get(struct file *f, struct kobject *kobj,
- struct bin_attribute *attr, char *buf,
+ const struct bin_attribute *attr, char *buf,
loff_t ppos, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
--- /dev/null
- use kernel::{bindings, c_str, pci, prelude::*};
+// SPDX-License-Identifier: GPL-2.0
+
- fn probe(pdev: &mut pci::Device, _info: &Self::IdInfo) -> Result<Pin<KBox<Self>>> {
++use kernel::{bindings, c_str, device::Core, pci, prelude::*};
+
+use crate::gpu::Gpu;
+
+#[pin_data]
+pub(crate) struct NovaCore {
+ #[pin]
+ pub(crate) gpu: Gpu,
+}
+
+const BAR0_SIZE: usize = 8;
+pub(crate) type Bar0 = pci::Bar<BAR0_SIZE>;
+
+kernel::pci_device_table!(
+ PCI_TABLE,
+ MODULE_PCI_TABLE,
+ <NovaCore as pci::Driver>::IdInfo,
+ [(
+ pci::DeviceId::from_id(bindings::PCI_VENDOR_ID_NVIDIA, bindings::PCI_ANY_ID as _),
+ ()
+ )]
+);
+
+impl pci::Driver for NovaCore {
+ type IdInfo = ();
+ const ID_TABLE: pci::IdTable<Self::IdInfo> = &PCI_TABLE;
+
++ fn probe(pdev: &pci::Device<Core>, _info: &Self::IdInfo) -> Result<Pin<KBox<Self>>> {
+ dev_dbg!(pdev.as_ref(), "Probe Nova Core GPU driver.\n");
+
+ pdev.enable_device_mem()?;
+ pdev.set_master();
+
+ let bar = pdev.iomap_region_sized::<BAR0_SIZE>(0, c_str!("nova-core/bar0"))?;
+
+ let this = KBox::pin_init(
+ try_pin_init!(Self {
+ gpu <- Gpu::new(pdev, bar)?,
+ }),
+ GFP_KERNEL,
+ )?;
+
+ Ok(this)
+ }
+}
--- /dev/null
- Self(bar.readl(BOOT0_OFFSET))
+// SPDX-License-Identifier: GPL-2.0
+
+use crate::driver::Bar0;
+
+// TODO
+//
+// Create register definitions via generic macros. See task "Generic register
+// abstraction" in Documentation/gpu/nova/core/todo.rst.
+
+const BOOT0_OFFSET: usize = 0x00000000;
+
+// 3:0 - chipset minor revision
+const BOOT0_MINOR_REV_SHIFT: u8 = 0;
+const BOOT0_MINOR_REV_MASK: u32 = 0x0000000f;
+
+// 7:4 - chipset major revision
+const BOOT0_MAJOR_REV_SHIFT: u8 = 4;
+const BOOT0_MAJOR_REV_MASK: u32 = 0x000000f0;
+
+// 23:20 - chipset implementation Identifier (depends on architecture)
+const BOOT0_IMPL_SHIFT: u8 = 20;
+const BOOT0_IMPL_MASK: u32 = 0x00f00000;
+
+// 28:24 - chipset architecture identifier
+const BOOT0_ARCH_MASK: u32 = 0x1f000000;
+
+// 28:20 - chipset identifier (virtual register field combining BOOT0_IMPL and
+// BOOT0_ARCH)
+const BOOT0_CHIPSET_SHIFT: u8 = BOOT0_IMPL_SHIFT;
+const BOOT0_CHIPSET_MASK: u32 = BOOT0_IMPL_MASK | BOOT0_ARCH_MASK;
+
+#[derive(Copy, Clone)]
+pub(crate) struct Boot0(u32);
+
+impl Boot0 {
+ #[inline]
+ pub(crate) fn read(bar: &Bar0) -> Self {
++ Self(bar.read32(BOOT0_OFFSET))
+ }
+
+ #[inline]
+ pub(crate) fn chipset(&self) -> u32 {
+ (self.0 & BOOT0_CHIPSET_MASK) >> BOOT0_CHIPSET_SHIFT
+ }
+
+ #[inline]
+ pub(crate) fn minor_rev(&self) -> u8 {
+ ((self.0 & BOOT0_MINOR_REV_MASK) >> BOOT0_MINOR_REV_SHIFT) as u8
+ }
+
+ #[inline]
+ pub(crate) fn major_rev(&self) -> u8 {
+ ((self.0 & BOOT0_MAJOR_REV_MASK) >> BOOT0_MAJOR_REV_SHIFT) as u8
+ }
+}
--- /dev/null
- use kernel::{bindings, dma::CoherentAllocation, pci, prelude::*};
+// SPDX-License-Identifier: GPL-2.0
+
+//! Rust DMA api test (based on QEMU's `pci-testdev`).
+//!
+//! To make this driver probe, QEMU must be run with `-device pci-testdev`.
+
- pdev: pci::Device,
++use kernel::{bindings, device::Core, dma::CoherentAllocation, pci, prelude::*, types::ARef};
+
+struct DmaSampleDriver {
- fn probe(pdev: &mut pci::Device, _info: &Self::IdInfo) -> Result<Pin<KBox<Self>>> {
++ pdev: ARef<pci::Device>,
+ ca: CoherentAllocation<MyStruct>,
+}
+
+const TEST_VALUES: [(u32, u32); 5] = [
+ (0xa, 0xb),
+ (0xc, 0xd),
+ (0xe, 0xf),
+ (0xab, 0xba),
+ (0xcd, 0xef),
+];
+
+struct MyStruct {
+ h: u32,
+ b: u32,
+}
+
+impl MyStruct {
+ fn new(h: u32, b: u32) -> Self {
+ Self { h, b }
+ }
+}
+// SAFETY: All bit patterns are acceptable values for `MyStruct`.
+unsafe impl kernel::transmute::AsBytes for MyStruct {}
+// SAFETY: Instances of `MyStruct` have no uninitialized portions.
+unsafe impl kernel::transmute::FromBytes for MyStruct {}
+
+kernel::pci_device_table!(
+ PCI_TABLE,
+ MODULE_PCI_TABLE,
+ <DmaSampleDriver as pci::Driver>::IdInfo,
+ [(
+ pci::DeviceId::from_id(bindings::PCI_VENDOR_ID_REDHAT, 0x5),
+ ()
+ )]
+);
+
+impl pci::Driver for DmaSampleDriver {
+ type IdInfo = ();
+ const ID_TABLE: pci::IdTable<Self::IdInfo> = &PCI_TABLE;
+
- pdev: pdev.clone(),
++ fn probe(pdev: &pci::Device<Core>, _info: &Self::IdInfo) -> Result<Pin<KBox<Self>>> {
+ dev_info!(pdev.as_ref(), "Probe DMA test driver.\n");
+
+ let ca: CoherentAllocation<MyStruct> =
+ CoherentAllocation::alloc_coherent(pdev.as_ref(), TEST_VALUES.len(), GFP_KERNEL)?;
+
+ || -> Result {
+ for (i, value) in TEST_VALUES.into_iter().enumerate() {
+ kernel::dma_write!(ca[i] = MyStruct::new(value.0, value.1));
+ }
+
+ Ok(())
+ }()?;
+
+ let drvdata = KBox::new(
+ Self {
++ pdev: pdev.into(),
+ ca,
+ },
+ GFP_KERNEL,
+ )?;
+
+ Ok(drvdata.into())
+ }
+}
+
+impl Drop for DmaSampleDriver {
+ fn drop(&mut self) {
+ dev_info!(self.pdev.as_ref(), "Unload DMA test driver.\n");
+
+ let _ = || -> Result {
+ for (i, value) in TEST_VALUES.into_iter().enumerate() {
+ assert_eq!(kernel::dma_read!(self.ca[i].h), value.0);
+ assert_eq!(kernel::dma_read!(self.ca[i].b), value.1);
+ }
+ Ok(())
+ }();
+ }
+}
+
+kernel::module_pci_driver! {
+ type: DmaSampleDriver,
+ name: "rust_dma",
+ authors: ["Abdiel Janulgue"],
+ description: "Rust DMA test",
+ license: "GPL v2",
+}
projects / users / hch / misc.git / commitdiff