drivers/gpu/drm/lima/lima_dlbu.c

   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
  15 void 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
  30 void 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
  37 void 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
  45 static 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
  55 int lima_dlbu_resume(struct lima_ip *ip)
  56 {
  57         return lima_dlbu_hw_init(ip);
  58 }
  59
  60 void lima_dlbu_suspend(struct lima_ip *ip)
  61 {
  62
  63 }
  64
  65 int lima_dlbu_init(struct lima_ip *ip)
  66 {
  67         return lima_dlbu_hw_init(ip);
  68 }
  69
  70 void lima_dlbu_fini(struct lima_ip *ip)
  71 {
  72
  73 }