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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imx8mm.c (3548B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Interconnect framework driver for i.MX8MM SoC
      4 *
      5 * Copyright (c) 2019, BayLibre
      6 * Copyright (c) 2019-2020, NXP
      7 * Author: Alexandre Bailon <abailon@baylibre.com>
      8 * Author: Leonard Crestez <leonard.crestez@nxp.com>
      9 */
     10
     11#include <linux/module.h>
     12#include <linux/platform_device.h>
     13#include <dt-bindings/interconnect/imx8mm.h>
     14
     15#include "imx.h"
     16
     17static const struct imx_icc_node_adj_desc imx8mm_dram_adj = {
     18	.bw_mul = 1,
     19	.bw_div = 16,
     20	.phandle_name = "fsl,ddrc",
     21};
     22
     23static const struct imx_icc_node_adj_desc imx8mm_noc_adj = {
     24	.bw_mul = 1,
     25	.bw_div = 16,
     26	.main_noc = true,
     27};
     28
     29/*
     30 * Describe bus masters, slaves and connections between them
     31 *
     32 * This is a simplified subset of the bus diagram, there are several other
     33 * PL301 nics which are skipped/merged into PL301_MAIN
     34 */
     35static struct imx_icc_node_desc nodes[] = {
     36	DEFINE_BUS_INTERCONNECT("NOC", IMX8MM_ICN_NOC, &imx8mm_noc_adj,
     37			IMX8MM_ICS_DRAM, IMX8MM_ICN_MAIN),
     38
     39	DEFINE_BUS_SLAVE("DRAM", IMX8MM_ICS_DRAM, &imx8mm_dram_adj),
     40	DEFINE_BUS_SLAVE("OCRAM", IMX8MM_ICS_OCRAM, NULL),
     41	DEFINE_BUS_MASTER("A53", IMX8MM_ICM_A53, IMX8MM_ICN_NOC),
     42
     43	/* VPUMIX */
     44	DEFINE_BUS_MASTER("VPU H1", IMX8MM_ICM_VPU_H1, IMX8MM_ICN_VIDEO),
     45	DEFINE_BUS_MASTER("VPU G1", IMX8MM_ICM_VPU_G1, IMX8MM_ICN_VIDEO),
     46	DEFINE_BUS_MASTER("VPU G2", IMX8MM_ICM_VPU_G2, IMX8MM_ICN_VIDEO),
     47	DEFINE_BUS_INTERCONNECT("PL301_VIDEO", IMX8MM_ICN_VIDEO, NULL, IMX8MM_ICN_NOC),
     48
     49	/* GPUMIX */
     50	DEFINE_BUS_MASTER("GPU 2D", IMX8MM_ICM_GPU2D, IMX8MM_ICN_GPU),
     51	DEFINE_BUS_MASTER("GPU 3D", IMX8MM_ICM_GPU3D, IMX8MM_ICN_GPU),
     52	DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MM_ICN_GPU, NULL, IMX8MM_ICN_NOC),
     53
     54	/* DISPLAYMIX */
     55	DEFINE_BUS_MASTER("CSI", IMX8MM_ICM_CSI, IMX8MM_ICN_MIPI),
     56	DEFINE_BUS_MASTER("LCDIF", IMX8MM_ICM_LCDIF, IMX8MM_ICN_MIPI),
     57	DEFINE_BUS_INTERCONNECT("PL301_MIPI", IMX8MM_ICN_MIPI, NULL, IMX8MM_ICN_NOC),
     58
     59	/* HSIO */
     60	DEFINE_BUS_MASTER("USB1", IMX8MM_ICM_USB1, IMX8MM_ICN_HSIO),
     61	DEFINE_BUS_MASTER("USB2", IMX8MM_ICM_USB2, IMX8MM_ICN_HSIO),
     62	DEFINE_BUS_MASTER("PCIE", IMX8MM_ICM_PCIE, IMX8MM_ICN_HSIO),
     63	DEFINE_BUS_INTERCONNECT("PL301_HSIO", IMX8MM_ICN_HSIO, NULL, IMX8MM_ICN_NOC),
     64
     65	/* Audio */
     66	DEFINE_BUS_MASTER("SDMA2", IMX8MM_ICM_SDMA2, IMX8MM_ICN_AUDIO),
     67	DEFINE_BUS_MASTER("SDMA3", IMX8MM_ICM_SDMA3, IMX8MM_ICN_AUDIO),
     68	DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MM_ICN_AUDIO, NULL, IMX8MM_ICN_MAIN),
     69
     70	/* Ethernet */
     71	DEFINE_BUS_MASTER("ENET", IMX8MM_ICM_ENET, IMX8MM_ICN_ENET),
     72	DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MM_ICN_ENET, NULL, IMX8MM_ICN_MAIN),
     73
     74	/* Other */
     75	DEFINE_BUS_MASTER("SDMA1", IMX8MM_ICM_SDMA1, IMX8MM_ICN_MAIN),
     76	DEFINE_BUS_MASTER("NAND", IMX8MM_ICM_NAND, IMX8MM_ICN_MAIN),
     77	DEFINE_BUS_MASTER("USDHC1", IMX8MM_ICM_USDHC1, IMX8MM_ICN_MAIN),
     78	DEFINE_BUS_MASTER("USDHC2", IMX8MM_ICM_USDHC2, IMX8MM_ICN_MAIN),
     79	DEFINE_BUS_MASTER("USDHC3", IMX8MM_ICM_USDHC3, IMX8MM_ICN_MAIN),
     80	DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MM_ICN_MAIN, NULL,
     81			IMX8MM_ICN_NOC, IMX8MM_ICS_OCRAM),
     82};
     83
     84static int imx8mm_icc_probe(struct platform_device *pdev)
     85{
     86	return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes));
     87}
     88
     89static int imx8mm_icc_remove(struct platform_device *pdev)
     90{
     91	return imx_icc_unregister(pdev);
     92}
     93
     94static struct platform_driver imx8mm_icc_driver = {
     95	.probe = imx8mm_icc_probe,
     96	.remove = imx8mm_icc_remove,
     97	.driver = {
     98		.name = "imx8mm-interconnect",
     99	},
    100};
    101
    102module_platform_driver(imx8mm_icc_driver);
    103MODULE_AUTHOR("Alexandre Bailon <abailon@baylibre.com>");
    104MODULE_LICENSE("GPL v2");
    105MODULE_ALIAS("platform:imx8mm-interconnect");