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russellcnv
2024-06-28 19:18:50 -07:00
parent 3750358633
commit 91726f2e21
194 changed files with 44392 additions and 38511 deletions
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29
kernel-open/nvidia-uvm/uvm_gpu_semaphore.h
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@@ -29,6 +29,8 @@
#include "uvm_rm_mem.h"
#include "uvm_linux.h"
typedef NvU32 uvm_gpu_semaphore_notifier_t;
// A GPU semaphore is a memory location accessible by the GPUs and the CPU
// that's used for synchronization among them.
// The GPU has primitives to acquire (wait for) and release (set) 4-byte memory
@@ -45,17 +47,15 @@ struct uvm_gpu_semaphore_struct
// The semaphore pool page the semaphore came from
uvm_gpu_semaphore_pool_page_t *page;
// Pointer to the memory location
NvU32 *payload;
// Index of the semaphore in semaphore page
NvU16 index;
struct {
NvU16 index;
NvU32 cached_payload;
uvm_rm_mem_t *encrypted_payload;
uvm_rm_mem_t *notifier;
uvm_rm_mem_t *auth_tag;
UvmCslIv *ivs;
NvU32 last_pushed_notifier;
NvU32 last_observed_notifier;
NvU32 cached_payload;
uvm_gpu_semaphore_notifier_t last_pushed_notifier;
uvm_gpu_semaphore_notifier_t last_observed_notifier;
} conf_computing;
};
@@ -151,6 +151,17 @@ NvU64 uvm_gpu_semaphore_get_gpu_proxy_va(uvm_gpu_semaphore_t *semaphore, uvm_gpu
NvU64 uvm_gpu_semaphore_get_gpu_va(uvm_gpu_semaphore_t *semaphore, uvm_gpu_t *gpu, bool is_proxy_va_space);
NvU32 *uvm_gpu_semaphore_get_cpu_va(uvm_gpu_semaphore_t *semaphore);
NvU32 *uvm_gpu_semaphore_get_encrypted_payload_cpu_va(uvm_gpu_semaphore_t *semaphore);
uvm_gpu_address_t uvm_gpu_semaphore_get_encrypted_payload_gpu_va(uvm_gpu_semaphore_t *semaphore);
uvm_gpu_semaphore_notifier_t *uvm_gpu_semaphore_get_notifier_cpu_va(uvm_gpu_semaphore_t *semaphore);
uvm_gpu_address_t uvm_gpu_semaphore_get_notifier_gpu_va(uvm_gpu_semaphore_t *semaphore);
void *uvm_gpu_semaphore_get_auth_tag_cpu_va(uvm_gpu_semaphore_t *semaphore);
uvm_gpu_address_t uvm_gpu_semaphore_get_auth_tag_gpu_va(uvm_gpu_semaphore_t *semaphore);
// Read the 32-bit payload of the semaphore
// Notably doesn't provide any memory ordering guarantees and needs to be used with
// care. For an example of what needs to be considered see