1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/* Copyright 2018-2019 Qiang Yu <yuq825@gmail.com> */
3
4#include <linux/io.h>
5#include <linux/device.h>
6
7#include "lima_device.h"
8#include "lima_dlbu.h"
9#include "lima_vm.h"
10#include "lima_regs.h"
11
12#define dlbu_write(reg, data) writel(data, ip->iomem + reg)
13#define dlbu_read(reg) readl(ip->iomem + reg)
14
15void lima_dlbu_enable(struct lima_device *dev, int num_pp)
16{
17 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp;
18 struct lima_ip *ip = dev->ip + lima_ip_dlbu;
19 int i, mask = 0;
20
21 for (i = 0; i < num_pp; i++) {
22 struct lima_ip *pp = pipe->processor[i];
23
24 mask |= 1 << (pp->id - lima_ip_pp0);
25 }
26
27 dlbu_write(LIMA_DLBU_PP_ENABLE_MASK, mask);
28}
29
30void lima_dlbu_disable(struct lima_device *dev)
31{
32 struct lima_ip *ip = dev->ip + lima_ip_dlbu;
33
34 dlbu_write(LIMA_DLBU_PP_ENABLE_MASK, 0);
35}
36
37void lima_dlbu_set_reg(struct lima_ip *ip, u32 *reg)
38{
39 dlbu_write(LIMA_DLBU_TLLIST_VBASEADDR, reg[0]);
40 dlbu_write(LIMA_DLBU_FB_DIM, reg[1]);
41 dlbu_write(LIMA_DLBU_TLLIST_CONF, reg[2]);
42 dlbu_write(LIMA_DLBU_START_TILE_POS, reg[3]);
43}
44
45static int lima_dlbu_hw_init(struct lima_ip *ip)
46{
47 struct lima_device *dev = ip->dev;
48
49 dlbu_write(LIMA_DLBU_MASTER_TLLIST_PHYS_ADDR, dev->dlbu_dma | 1);
50 dlbu_write(LIMA_DLBU_MASTER_TLLIST_VADDR, LIMA_VA_RESERVE_DLBU);
51
52 return 0;
53}
54
55int lima_dlbu_resume(struct lima_ip *ip)
56{
57 return lima_dlbu_hw_init(ip);
58}
59
60void lima_dlbu_suspend(struct lima_ip *ip)
61{
62
63}
64
65int lima_dlbu_init(struct lima_ip *ip)
66{
67 return lima_dlbu_hw_init(ip);
68}
69
70void lima_dlbu_fini(struct lima_ip *ip)
71{
72
73}
74

source code of linux/drivers/gpu/drm/lima/lima_dlbu.c