NVIDIA/open-gpu-kernel-modules
1
0
Fork 0
mirror of https://github.com/NVIDIA/open-gpu-kernel-modules.git synced 2026-03-05 05:09:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

550.40.65

Browse Source
This commit is contained in:
russellcnv
2024-06-28 19:18:50 -07:00
parent 3750358633
commit 91726f2e21
194 changed files with 44392 additions and 38511 deletions
Download Patch File Download Diff File Expand all files Collapse all files

135
kernel-open/nvidia-uvm/uvm_channel.h
View File

@@ -228,21 +228,65 @@ typedef struct
// variant is required when the thread holding the pool lock must sleep
// (ex: acquire another mutex) deeper in the call stack, either in UVM or
// RM.
union {
union
{
uvm_spinlock_t spinlock;
uvm_mutex_t mutex;
};
// Secure operations require that uvm_push_begin order matches
// uvm_push_end order, because the engine's state is used in its internal
// operation and each push may modify this state. push_locks is protected by
// the channel pool lock.
DECLARE_BITMAP(push_locks, UVM_CHANNEL_MAX_NUM_CHANNELS_PER_POOL);
struct
{
// Secure operations require that uvm_push_begin order matches
// uvm_push_end order, because the engine's state is used in its
// internal operation and each push may modify this state.
// push_locks is protected by the channel pool lock.
DECLARE_BITMAP(push_locks, UVM_CHANNEL_MAX_NUM_CHANNELS_PER_POOL);
// Counting semaphore for available and unlocked channels, it must be
// acquired before submitting work to a channel when the Confidential
// Computing feature is enabled.
uvm_semaphore_t push_sem;
// Counting semaphore for available and unlocked channels, it must be
// acquired before submitting work to a channel when the Confidential
// Computing feature is enabled.
uvm_semaphore_t push_sem;
// Per channel buffers in unprotected sysmem.
uvm_rm_mem_t *pool_sysmem;
// Per channel buffers in protected vidmem.
uvm_rm_mem_t *pool_vidmem;
struct
{
// Current encryption key version, incremented upon key rotation.
// While there are separate keys for encryption and decryption, the
// two keys are rotated at once, so the versioning applies to both.
NvU32 version;
// Lock used to ensure mutual exclusion during key rotation.
uvm_mutex_t mutex;
// CSL contexts passed to RM for key rotation. This is usually an
// array containing the CSL contexts associated with the channels in
// the pool. In the case of the WLC pool, the array also includes
// CSL contexts associated with LCIC channels.
UvmCslContext **csl_contexts;
// Number of elements in the CSL context array.
unsigned num_csl_contexts;
// Number of bytes encrypted, or decrypted, on the engine associated
// with the pool since the last key rotation. Only used during
// testing, to force key rotations after a certain encryption size,
// see UVM_CONF_COMPUTING_KEY_ROTATION_LOWER_THRESHOLD.
//
// Encryptions on a LCIC pool are accounted for in the paired WLC
// pool.
//
// TODO: Bug 4612912: these accounting variables can be removed once
// RM exposes an API to set the key rotation lower threshold.
atomic64_t encrypted;
atomic64_t decrypted;
} key_rotation;
} conf_computing;
} uvm_channel_pool_t;
struct uvm_channel_struct
@@ -322,43 +366,14 @@ struct uvm_channel_struct
// work launches to match the order of push end-s that triggered them.
volatile NvU32 gpu_put;
// Static pushbuffer for channels with static schedule (WLC/LCIC)
uvm_rm_mem_t *static_pb_protected_vidmem;
// Static pushbuffer staging buffer for WLC
uvm_rm_mem_t *static_pb_unprotected_sysmem;
void *static_pb_unprotected_sysmem_cpu;
void *static_pb_unprotected_sysmem_auth_tag_cpu;
// The above static locations are required by the WLC (and LCIC)
// schedule. Protected sysmem location completes WLC's independence
// from the pushbuffer allocator.
// Protected sysmem location makes WLC independent from the pushbuffer
// allocator. Unprotected sysmem and protected vidmem counterparts
// are allocated from the channel pool (sysmem, vidmem).
void *static_pb_protected_sysmem;
// Static tracking semaphore notifier values
// Because of LCIC's fixed schedule, the secure semaphore release
// mechanism uses two additional static locations for incrementing the
// notifier values. See:
// . channel_semaphore_secure_release()
// . setup_lcic_schedule()
// . internal_channel_submit_work_wlc()
uvm_rm_mem_t *static_notifier_unprotected_sysmem;
NvU32 *static_notifier_entry_unprotected_sysmem_cpu;
NvU32 *static_notifier_exit_unprotected_sysmem_cpu;
uvm_gpu_address_t static_notifier_entry_unprotected_sysmem_gpu_va;
uvm_gpu_address_t static_notifier_exit_unprotected_sysmem_gpu_va;
// Explicit location for push launch tag used by WLC.
// Encryption auth tags have to be located in unprotected sysmem.
void *launch_auth_tag_cpu;
NvU64 launch_auth_tag_gpu_va;
// Used to decrypt the push back to protected sysmem.
// This happens when profilers register callbacks for migration data.
uvm_push_crypto_bundle_t *push_crypto_bundles;
// Accompanying authentication tags for the crypto bundles
uvm_rm_mem_t *push_crypto_bundle_auth_tags;
} conf_computing;
// RM channel information
@@ -418,7 +433,7 @@ struct uvm_channel_manager_struct
unsigned num_channel_pools;
// Mask containing the indexes of the usable Copy Engines. Each usable CE
// has at least one pool associated with it.
// has at least one pool of type UVM_CHANNEL_POOL_TYPE_CE associated with it
DECLARE_BITMAP(ce_mask, UVM_COPY_ENGINE_COUNT_MAX);
struct
@@ -451,6 +466,16 @@ struct uvm_channel_manager_struct
UVM_BUFFER_LOCATION gpput_loc;
UVM_BUFFER_LOCATION pushbuffer_loc;
} conf;
struct
{
// Flag indicating that the WLC/LCIC mechanism is ready/setup; should
// only be false during (de)initialization.
bool wlc_ready;
// True indicates that key rotation is enabled (UVM-wise).
bool key_rotation_enabled;
} conf_computing;
};
// Create a channel manager for the GPU
@@ -501,6 +526,14 @@ uvm_channel_t *uvm_channel_lcic_get_paired_wlc(uvm_channel_t *lcic_channel);
uvm_channel_t *uvm_channel_wlc_get_paired_lcic(uvm_channel_t *wlc_channel);
NvU64 uvm_channel_get_static_pb_protected_vidmem_gpu_va(uvm_channel_t *channel);
NvU64 uvm_channel_get_static_pb_unprotected_sysmem_gpu_va(uvm_channel_t *channel);
char* uvm_channel_get_static_pb_unprotected_sysmem_cpu(uvm_channel_t *channel);
char *uvm_channel_get_push_crypto_bundle_auth_tags_cpu_va(uvm_channel_t *channel, unsigned tag_index);
static bool uvm_channel_pool_is_proxy(uvm_channel_pool_t *pool)
{
UVM_ASSERT(uvm_pool_type_is_valid(pool->pool_type));
@@ -532,6 +565,17 @@ static uvm_channel_type_t uvm_channel_proxy_channel_type(void)
return UVM_CHANNEL_TYPE_MEMOPS;
}
// Force key rotation in the engine associated with the given channel pool.
// Rotation may still not happen if RM cannot acquire the necessary locks (in
// which case the function returns NV_ERR_STATE_IN_USE).
//
// This function should be only invoked in pools in which key rotation is
// enabled.
NV_STATUS uvm_channel_pool_rotate_key(uvm_channel_pool_t *pool);
// Retrieve the current encryption key version associated with the channel pool.
NvU32 uvm_channel_pool_key_version(uvm_channel_pool_t *pool);
// Privileged channels support all the Host and engine methods, while
// non-privileged channels don't support privileged methods.
//
@@ -579,12 +623,9 @@ NvU32 uvm_channel_manager_update_progress(uvm_channel_manager_t *channel_manager
// beginning.
NV_STATUS uvm_channel_manager_wait(uvm_channel_manager_t *manager);
// Check if WLC/LCIC mechanism is ready/setup
// Should only return false during initialization
static bool uvm_channel_manager_is_wlc_ready(uvm_channel_manager_t *manager)
{
return (manager->pool_to_use.default_for_type[UVM_CHANNEL_TYPE_WLC] != NULL) &&
(manager->pool_to_use.default_for_type[UVM_CHANNEL_TYPE_LCIC] != NULL);
return manager->conf_computing.wlc_ready;
}
// Get the GPU VA of semaphore_channel's tracking semaphore within the VA space
// associated with access_channel.