cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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lima_dlbu.c (1559B)

      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}