LXR linux/drivers/gpu/drm/lima/lima

   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
  45int lima_dlbu_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
  55void lima_dlbu_fini(struct lima_ip *ip)
  56{
  57
  58}
  59