1/* SPDX-License-Identifier: GPL-2.0 OR MIT */
  2/* Copyright 2018-2019 Qiang Yu <yuq825@gmail.com> */
  3
  4#ifndef __LIMA_DEVICE_H__
  5#define __LIMA_DEVICE_H__
  6
  7#include <drm/drm_device.h>
  8#include <linux/delay.h>
  9
 10#include "lima_sched.h"
 11
 12enum lima_gpu_id {
 13	lima_gpu_mali400 = 0,
 14	lima_gpu_mali450,
 15	lima_gpu_num,
 16};
 17
 18enum lima_ip_id {
 19	lima_ip_pmu,
 20	lima_ip_gpmmu,
 21	lima_ip_ppmmu0,
 22	lima_ip_ppmmu1,
 23	lima_ip_ppmmu2,
 24	lima_ip_ppmmu3,
 25	lima_ip_ppmmu4,
 26	lima_ip_ppmmu5,
 27	lima_ip_ppmmu6,
 28	lima_ip_ppmmu7,
 29	lima_ip_gp,
 30	lima_ip_pp0,
 31	lima_ip_pp1,
 32	lima_ip_pp2,
 33	lima_ip_pp3,
 34	lima_ip_pp4,
 35	lima_ip_pp5,
 36	lima_ip_pp6,
 37	lima_ip_pp7,
 38	lima_ip_l2_cache0,
 39	lima_ip_l2_cache1,
 40	lima_ip_l2_cache2,
 41	lima_ip_dlbu,
 42	lima_ip_bcast,
 43	lima_ip_pp_bcast,
 44	lima_ip_ppmmu_bcast,
 45	lima_ip_num,
 46};
 47
 48struct lima_device;
 49
 50struct lima_ip {
 51	struct lima_device *dev;
 52	enum lima_ip_id id;
 53	bool present;
 54
 55	void __iomem *iomem;
 56	int irq;
 57
 58	union {
 59		/* gp/pp */
 60		bool async_reset;
 61		/* l2 cache */
 62		spinlock_t lock;
 63	} data;
 64};
 65
 66enum lima_pipe_id {
 67	lima_pipe_gp,
 68	lima_pipe_pp,
 69	lima_pipe_num,
 70};
 71
 72struct lima_device {
 73	struct device *dev;
 74	struct drm_device *ddev;
 75	struct platform_device *pdev;
 76
 77	enum lima_gpu_id id;
 78	u32 gp_version;
 79	u32 pp_version;
 80	int num_pp;
 81
 82	void __iomem *iomem;
 83	struct clk *clk_bus;
 84	struct clk *clk_gpu;
 85	struct reset_control *reset;
 86	struct regulator *regulator;
 87
 88	struct lima_ip ip[lima_ip_num];
 89	struct lima_sched_pipe pipe[lima_pipe_num];
 90
 91	struct lima_vm *empty_vm;
 92	uint64_t va_start;
 93	uint64_t va_end;
 94
 95	u32 *dlbu_cpu;
 96	dma_addr_t dlbu_dma;
 97};
 98
 99static inline struct lima_device *
100to_lima_dev(struct drm_device *dev)
101{
102	return dev->dev_private;
103}
104
105int lima_device_init(struct lima_device *ldev);
106void lima_device_fini(struct lima_device *ldev);
107
108const char *lima_ip_name(struct lima_ip *ip);
109
110typedef int (*lima_poll_func_t)(struct lima_ip *);
111
112static inline int lima_poll_timeout(struct lima_ip *ip, lima_poll_func_t func,
113				    int sleep_us, int timeout_us)
114{
115	ktime_t timeout = ktime_add_us(ktime_get(), timeout_us);
116
117	might_sleep_if(sleep_us);
118	while (1) {
119		if (func(ip))
120			return 0;
121
122		if (timeout_us && ktime_compare(ktime_get(), timeout) > 0)
123			return -ETIMEDOUT;
124
125		if (sleep_us)
126			usleep_range((sleep_us >> 2) + 1, sleep_us);
127	}
128	return 0;
129}
130
131#endif