/*
* Copyright 2014 Advanced Micro Devices , Inc .
*
* Permission is hereby granted , free of charge , to any person obtaining a
* copy of this software and associated documentation files ( the " Software " ) ,
* to deal in the Software without restriction , including without limitation
* the rights to use , copy , modify , merge , publish , distribute , sublicense ,
* and / or sell copies of the Software , and to permit persons to whom the
* Software is furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL
* THE COPYRIGHT HOLDER ( S ) OR AUTHOR ( S ) BE LIABLE FOR ANY CLAIM , DAMAGES OR
* OTHER LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE ,
* ARISING FROM , OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE .
*
*/
#ifndef __AMDGPU_IH_H__
#define __AMDGPU_IH_H__
/* Maximum number of IVs processed at once */
#define AMDGPU_IH_MAX_NUM_IVS 32
#define IH_RING_SIZE (256 * 1024 )
#define IH_SW_RING_SIZE (16 * 1024 ) /* enough for 512 CAM entries */
struct amdgpu_device;
struct amdgpu_iv_entry;
struct amdgpu_ih_regs {
uint32_t ih_rb_base;
uint32_t ih_rb_base_hi;
uint32_t ih_rb_cntl;
uint32_t ih_rb_wptr;
uint32_t ih_rb_rptr;
uint32_t ih_doorbell_rptr;
uint32_t ih_rb_wptr_addr_lo;
uint32_t ih_rb_wptr_addr_hi;
uint32_t psp_reg_id;
};
/*
* R6xx + IH ring
*/
struct amdgpu_ih_ring {
unsigned ring_size;
uint32_t ptr_mask;
u32 doorbell_index;
bool use_doorbell;
bool use_bus_addr;
struct amdgpu_bo *ring_obj;
volatile uint32_t *ring;
uint64_t gpu_addr;
uint64_t wptr_addr;
volatile uint32_t *wptr_cpu;
uint64_t rptr_addr;
volatile uint32_t *rptr_cpu;
bool enabled;
unsigned rptr;
struct amdgpu_ih_regs ih_regs;
/* For waiting on IH processing at checkpoint. */
wait_queue_head_t wait_process;
uint64_t processed_timestamp;
bool overflow;
};
/* return true if time stamp t2 is after t1 with 48bit wrap around */
#define amdgpu_ih_ts_after(t1, t2) \
(((int64_t)((t2) << 16 ) - (int64_t)((t1) << 16 )) > 0 LL)
#define amdgpu_ih_ts_after_or_equal(t1, t2) \
(((int64_t)((t2) << 16 ) - (int64_t)((t1) << 16 )) >= 0 LL)
/* provided by the ih block */
struct amdgpu_ih_funcs {
/* ring read/write ptr handling, called from interrupt context */
u32 (*get_wptr)(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih);
void (*decode_iv)(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih,
struct amdgpu_iv_entry *entry);
uint64_t (*decode_iv_ts)(struct amdgpu_ih_ring *ih, u32 rptr,
signed int offset);
void (*set_rptr)(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih);
};
#define amdgpu_ih_get_wptr(adev, ih) (adev)->irq.ih_funcs->get_wptr((adev), (ih))
#define amdgpu_ih_decode_iv(adev, iv) \
(adev)->irq.ih_funcs->decode_iv((adev), (ih), (iv))
#define amdgpu_ih_decode_iv_ts(adev, ih, rptr, offset) \
(WARN_ON_ONCE(!(adev)->irq.ih_funcs->decode_iv_ts) ? 0 : \
(adev)->irq.ih_funcs->decode_iv_ts((ih), (rptr), (offset)))
#define amdgpu_ih_set_rptr(adev, ih) (adev)->irq.ih_funcs->set_rptr((adev), (ih))
int amdgpu_ih_ring_init(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih,
unsigned ring_size, bool use_bus_addr);
void amdgpu_ih_ring_fini(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih);
void amdgpu_ih_ring_write(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih,
const uint32_t *iv, unsigned int num_dw);
int amdgpu_ih_wait_on_checkpoint_process_ts(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih);
int amdgpu_ih_process(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih);
void amdgpu_ih_decode_iv_helper(struct amdgpu_device *adev,
struct amdgpu_ih_ring *ih,
struct amdgpu_iv_entry *entry);
uint64_t amdgpu_ih_decode_iv_ts_helper(struct amdgpu_ih_ring *ih, u32 rptr,
signed int offset);
const char *amdgpu_ih_ring_name(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih);
#endif
Messung V0.5 in Prozent C=94 H=100 G=96
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-02)
¤
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