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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#ifndef KFD_KERNEL_QUEUE_H_#define KFD_KERNEL_QUEUE_H_
#include <linux/list.h>#include <linux/types.h>#include "kfd_priv.h"
/** * kq_acquire_packet_buffer: Returns a pointer to the location in the kernel * queue ring buffer where the calling function can write its packet. It is * Guaranteed that there is enough space for that packet. It also updates the * pending write pointer to that location so subsequent calls to * acquire_packet_buffer will get a correct write pointer * * kq_submit_packet: Update the write pointer and doorbell of a kernel queue. * * kq_rollback_packet: This routine is called if we failed to build an acquired * packet for some reason. It just overwrites the pending wptr with the current * one * */
int kq_acquire_packet_buffer(struct kernel_queue *kq, size_t packet_size_in_dwords, unsigned int **buffer_ptr);int kq_submit_packet(struct kernel_queue *kq);void kq_rollback_packet(struct kernel_queue *kq);
struct kernel_queue { /* data */ struct kfd_node *dev; struct mqd_manager *mqd_mgr; struct queue *queue; uint64_t pending_wptr64; uint32_t pending_wptr; unsigned int nop_packet;
struct kfd_mem_obj *rptr_mem; uint32_t *rptr_kernel; uint64_t rptr_gpu_addr; struct kfd_mem_obj *wptr_mem; union { uint64_t *wptr64_kernel; uint32_t *wptr_kernel; }; uint64_t wptr_gpu_addr; struct kfd_mem_obj *pq; uint64_t pq_gpu_addr; uint32_t *pq_kernel_addr; struct kfd_mem_obj *eop_mem; uint64_t eop_gpu_addr; uint32_t *eop_kernel_addr;
struct kfd_mem_obj *fence_mem_obj; uint64_t fence_gpu_addr; void *fence_kernel_address;
struct list_head list;};
#endif /* KFD_KERNEL_QUEUE_H_ */