162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef __PXA3XX_GCU_H__ 362306a36Sopenharmony_ci#define __PXA3XX_GCU_H__ 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/types.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci/* Number of 32bit words in display list (ring buffer). */ 862306a36Sopenharmony_ci#define PXA3XX_GCU_BUFFER_WORDS ((256 * 1024 - 256) / 4) 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci/* To be increased when breaking the ABI */ 1162306a36Sopenharmony_ci#define PXA3XX_GCU_SHARED_MAGIC 0x30000001 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ci#define PXA3XX_GCU_BATCH_WORDS 8192 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_cistruct pxa3xx_gcu_shared { 1662306a36Sopenharmony_ci u32 buffer[PXA3XX_GCU_BUFFER_WORDS]; 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ci bool hw_running; 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci unsigned long buffer_phys; 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ci unsigned int num_words; 2362306a36Sopenharmony_ci unsigned int num_writes; 2462306a36Sopenharmony_ci unsigned int num_done; 2562306a36Sopenharmony_ci unsigned int num_interrupts; 2662306a36Sopenharmony_ci unsigned int num_wait_idle; 2762306a36Sopenharmony_ci unsigned int num_wait_free; 2862306a36Sopenharmony_ci unsigned int num_idle; 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci u32 magic; 3162306a36Sopenharmony_ci}; 3262306a36Sopenharmony_ci 3362306a36Sopenharmony_ci/* Initialization and synchronization. 3462306a36Sopenharmony_ci * Hardware is started upon write(). */ 3562306a36Sopenharmony_ci#define PXA3XX_GCU_IOCTL_RESET _IO('G', 0) 3662306a36Sopenharmony_ci#define PXA3XX_GCU_IOCTL_WAIT_IDLE _IO('G', 2) 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_ci#endif /* __PXA3XX_GCU_H__ */ 3962306a36Sopenharmony_ci 40